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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 02:56:35 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 02:56:35 +0000
commiteba0cfa6b0bef4f2e73c8630a7efa3944df8b0f8 (patch)
tree74c37eede1f0634cc5de1c63c934edaa1630c6bc /kexec
parentInitial commit. (diff)
downloadkexec-tools-eba0cfa6b0bef4f2e73c8630a7efa3944df8b0f8.tar.xz
kexec-tools-eba0cfa6b0bef4f2e73c8630a7efa3944df8b0f8.zip
Adding upstream version 1:2.0.27.upstream/1%2.0.27upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'kexec')
-rw-r--r--kexec/Makefile126
-rw-r--r--kexec/add_buffer.c14
-rw-r--r--kexec/add_segment.c8
-rw-r--r--kexec/arch/alpha/Makefile4
-rw-r--r--kexec/arch/alpha/include/arch/options.h20
-rw-r--r--kexec/arch/arm/Makefile34
-rw-r--r--kexec/arch/arm/crashdump-arm.c388
-rw-r--r--kexec/arch/arm/crashdump-arm.h27
-rw-r--r--kexec/arch/arm/include/arch/options.h52
-rw-r--r--kexec/arch/arm/iomem.h9
-rw-r--r--kexec/arch/arm/kexec-arm.c150
-rw-r--r--kexec/arch/arm/kexec-arm.h22
-rw-r--r--kexec/arch/arm/kexec-elf-rel-arm.c36
-rw-r--r--kexec/arch/arm/kexec-uImage-arm.c22
-rw-r--r--kexec/arch/arm/kexec-zImage-arm.c914
-rw-r--r--kexec/arch/arm/phys_to_virt.c22
-rw-r--r--kexec/arch/arm/phys_to_virt.h8
-rw-r--r--kexec/arch/arm64/Makefile50
-rw-r--r--kexec/arch/arm64/crashdump-arm64.c248
-rw-r--r--kexec/arch/arm64/crashdump-arm64.h29
-rw-r--r--kexec/arch/arm64/image-header.h147
-rw-r--r--kexec/arch/arm64/include/arch/options.h43
-rw-r--r--kexec/arch/arm64/iomem.h10
-rw-r--r--kexec/arch/arm64/kexec-arm64.c1365
-rw-r--r--kexec/arch/arm64/kexec-arm64.h84
-rw-r--r--kexec/arch/arm64/kexec-elf-arm64.c170
-rw-r--r--kexec/arch/arm64/kexec-image-arm64.c119
-rw-r--r--kexec/arch/arm64/kexec-uImage-arm64.c52
-rw-r--r--kexec/arch/arm64/kexec-vmlinuz-arm64.c110
-rw-r--r--kexec/arch/cris/Makefile13
-rw-r--r--kexec/arch/cris/cris-setup-simple.S31
-rw-r--r--kexec/arch/cris/include/arch/options.h35
-rw-r--r--kexec/arch/cris/kexec-cris.c111
-rw-r--r--kexec/arch/cris/kexec-cris.h9
-rw-r--r--kexec/arch/cris/kexec-elf-cris.c133
-rw-r--r--kexec/arch/cris/kexec-elf-rel-cris.c43
-rw-r--r--kexec/arch/hppa/Makefile13
-rw-r--r--kexec/arch/hppa/include/arch/options.h32
-rw-r--r--kexec/arch/hppa/kexec-elf-hppa.c159
-rw-r--r--kexec/arch/hppa/kexec-elf-rel-hppa.c37
-rw-r--r--kexec/arch/hppa/kexec-hppa.c148
-rw-r--r--kexec/arch/hppa/kexec-hppa.h9
-rw-r--r--kexec/arch/i386/Makefile20
-rw-r--r--kexec/arch/i386/crashdump-x86.c1049
-rw-r--r--kexec/arch/i386/crashdump-x86.h33
-rw-r--r--kexec/arch/i386/include/arch/options.h86
-rw-r--r--kexec/arch/i386/kexec-beoboot-x86.c132
-rw-r--r--kexec/arch/i386/kexec-bzImage.c471
-rw-r--r--kexec/arch/i386/kexec-elf-rel-x86.c36
-rw-r--r--kexec/arch/i386/kexec-elf-x86.c331
-rw-r--r--kexec/arch/i386/kexec-mb2-x86.c616
-rw-r--r--kexec/arch/i386/kexec-multiboot-x86.c505
-rw-r--r--kexec/arch/i386/kexec-nbi.c249
-rw-r--r--kexec/arch/i386/kexec-x86-common.c444
-rw-r--r--kexec/arch/i386/kexec-x86.c210
-rw-r--r--kexec/arch/i386/kexec-x86.h97
-rw-r--r--kexec/arch/i386/x86-linux-setup.c971
-rw-r--r--kexec/arch/i386/x86-linux-setup.h38
-rw-r--r--kexec/arch/ia64/Makefile16
-rw-r--r--kexec/arch/ia64/crashdump-ia64.c293
-rw-r--r--kexec/arch/ia64/crashdump-ia64.h12
-rw-r--r--kexec/arch/ia64/include/arch/options.h42
-rw-r--r--kexec/arch/ia64/kexec-elf-ia64.c303
-rw-r--r--kexec/arch/ia64/kexec-elf-rel-ia64.c160
-rw-r--r--kexec/arch/ia64/kexec-ia64.c247
-rw-r--r--kexec/arch/ia64/kexec-ia64.h14
-rw-r--r--kexec/arch/ia64/kexec-iomem.c23
-rw-r--r--kexec/arch/loongarch/Makefile22
-rw-r--r--kexec/arch/loongarch/crashdump-loongarch.c220
-rw-r--r--kexec/arch/loongarch/crashdump-loongarch.h26
-rw-r--r--kexec/arch/loongarch/image-header.h79
-rw-r--r--kexec/arch/loongarch/include/arch/options.h28
-rw-r--r--kexec/arch/loongarch/kexec-elf-loongarch.c125
-rw-r--r--kexec/arch/loongarch/kexec-elf-rel-loongarch.c42
-rw-r--r--kexec/arch/loongarch/kexec-loongarch.c375
-rw-r--r--kexec/arch/loongarch/kexec-loongarch.h60
-rw-r--r--kexec/arch/loongarch/kexec-pei-loongarch.c124
-rw-r--r--kexec/arch/m68k/Makefile15
-rw-r--r--kexec/arch/m68k/bootinfo.c285
-rw-r--r--kexec/arch/m68k/bootinfo.h53
-rw-r--r--kexec/arch/m68k/include/arch/options.h45
-rw-r--r--kexec/arch/m68k/kexec-elf-m68k.c183
-rw-r--r--kexec/arch/m68k/kexec-elf-rel-m68k.c39
-rw-r--r--kexec/arch/m68k/kexec-m68k.c110
-rw-r--r--kexec/arch/m68k/kexec-m68k.h9
-rw-r--r--kexec/arch/mips/Makefile29
-rw-r--r--kexec/arch/mips/crashdump-mips.c408
-rw-r--r--kexec/arch/mips/crashdump-mips.h30
-rw-r--r--kexec/arch/mips/include/arch/options.h43
-rw-r--r--kexec/arch/mips/kexec-elf-mips.c242
-rw-r--r--kexec/arch/mips/kexec-elf-rel-mips.c46
-rw-r--r--kexec/arch/mips/kexec-mips.c191
-rw-r--r--kexec/arch/mips/kexec-mips.h30
-rw-r--r--kexec/arch/ppc/Makefile34
-rw-r--r--kexec/arch/ppc/crashdump-powerpc.c433
-rw-r--r--kexec/arch/ppc/crashdump-powerpc.h45
-rw-r--r--kexec/arch/ppc/fixup_dtb.c408
-rw-r--r--kexec/arch/ppc/fixup_dtb.h10
-rw-r--r--kexec/arch/ppc/fs2dt.c471
-rw-r--r--kexec/arch/ppc/include/arch/options.h47
-rw-r--r--kexec/arch/ppc/include/page.h27
-rw-r--r--kexec/arch/ppc/include/types.h27
-rw-r--r--kexec/arch/ppc/kexec-dol-ppc.c468
-rw-r--r--kexec/arch/ppc/kexec-elf-ppc.c458
-rw-r--r--kexec/arch/ppc/kexec-elf-rel-ppc.c69
-rw-r--r--kexec/arch/ppc/kexec-ppc.c968
-rw-r--r--kexec/arch/ppc/kexec-ppc.h86
-rw-r--r--kexec/arch/ppc/kexec-uImage-ppc.c325
-rw-r--r--kexec/arch/ppc/libfdt-wrapper.c189
-rw-r--r--kexec/arch/ppc/ops.h147
-rw-r--r--kexec/arch/ppc/ppc-setup-dol.S174
-rw-r--r--kexec/arch/ppc/ppc-setup-simple.S39
-rw-r--r--kexec/arch/ppc/ppc_asm.h506
-rw-r--r--kexec/arch/ppc64/Makefile26
-rw-r--r--kexec/arch/ppc64/crashdump-ppc64.c644
-rw-r--r--kexec/arch/ppc64/crashdump-ppc64.h51
-rw-r--r--kexec/arch/ppc64/fdt.c78
-rw-r--r--kexec/arch/ppc64/include/arch/fdt.h8
-rw-r--r--kexec/arch/ppc64/include/arch/options.h51
-rw-r--r--kexec/arch/ppc64/kexec-elf-ppc64.c496
-rw-r--r--kexec/arch/ppc64/kexec-elf-rel-ppc64.c204
-rw-r--r--kexec/arch/ppc64/kexec-ppc64.c969
-rw-r--r--kexec/arch/ppc64/kexec-ppc64.h45
-rw-r--r--kexec/arch/ppc64/kexec-zImage-ppc64.c184
-rw-r--r--kexec/arch/s390/Makefile11
-rw-r--r--kexec/arch/s390/crashdump-s390.c90
-rw-r--r--kexec/arch/s390/include/arch/options.h40
-rw-r--r--kexec/arch/s390/kexec-elf-rel-s390.c78
-rw-r--r--kexec/arch/s390/kexec-image.c236
-rw-r--r--kexec/arch/s390/kexec-s390.c269
-rw-r--r--kexec/arch/s390/kexec-s390.h38
-rw-r--r--kexec/arch/sh/Makefile22
-rw-r--r--kexec/arch/sh/crashdump-sh.c166
-rw-r--r--kexec/arch/sh/crashdump-sh.h9
-rw-r--r--kexec/arch/sh/include/arch/options.h42
-rw-r--r--kexec/arch/sh/kexec-elf-rel-sh.c54
-rw-r--r--kexec/arch/sh/kexec-elf-sh.c136
-rw-r--r--kexec/arch/sh/kexec-netbsd-sh.c149
-rw-r--r--kexec/arch/sh/kexec-sh.c259
-rw-r--r--kexec/arch/sh/kexec-sh.h29
-rw-r--r--kexec/arch/sh/kexec-uImage-sh.c24
-rw-r--r--kexec/arch/sh/kexec-zImage-sh.c142
-rw-r--r--kexec/arch/sh/netbsd_booter.S47
-rw-r--r--kexec/arch/x86_64/Makefile24
l---------kexec/arch/x86_64/include/arch/options.h1
-rw-r--r--kexec/arch/x86_64/kexec-bzImage64.c397
-rw-r--r--kexec/arch/x86_64/kexec-elf-rel-x86_64.c94
-rw-r--r--kexec/arch/x86_64/kexec-elf-x86_64.c257
-rw-r--r--kexec/arch/x86_64/kexec-x86_64.c190
-rw-r--r--kexec/arch/x86_64/kexec-x86_64.h41
-rw-r--r--kexec/arch_reuse_initrd.c8
-rw-r--r--kexec/crashdump-elf.c241
-rw-r--r--kexec/crashdump-xen.c256
-rw-r--r--kexec/crashdump.c159
-rw-r--r--kexec/crashdump.h64
-rw-r--r--kexec/dt-ops.c176
-rw-r--r--kexec/dt-ops.h14
-rw-r--r--kexec/firmware_memmap.c302
-rw-r--r--kexec/firmware_memmap.h76
-rw-r--r--kexec/fs2dt.c852
-rw-r--r--kexec/fs2dt.h39
-rw-r--r--kexec/ifdown.c79
-rw-r--r--kexec/kexec-elf-boot.c89
-rw-r--r--kexec/kexec-elf-boot.h8
-rw-r--r--kexec/kexec-elf-core.c29
-rw-r--r--kexec/kexec-elf-exec.c228
-rw-r--r--kexec/kexec-elf-rel.c553
-rw-r--r--kexec/kexec-elf.c787
-rw-r--r--kexec/kexec-elf.h143
-rw-r--r--kexec/kexec-iomem.c109
-rw-r--r--kexec/kexec-lzma.h8
-rw-r--r--kexec/kexec-pe-zboot.c131
-rw-r--r--kexec/kexec-sha256.h11
-rw-r--r--kexec/kexec-syscall.h188
-rw-r--r--kexec/kexec-uImage.c283
-rw-r--r--kexec/kexec-xen.c297
-rw-r--r--kexec/kexec-xen.h87
-rw-r--r--kexec/kexec-zlib.h11
-rw-r--r--kexec/kexec.8399
-rw-r--r--kexec/kexec.c1712
-rw-r--r--kexec/kexec.h350
-rw-r--r--kexec/libfdt/Makefile.libfdt13
-rw-r--r--kexec/libfdt/fdt.c201
-rw-r--r--kexec/libfdt/fdt.h60
-rw-r--r--kexec/libfdt/fdt_ro.c466
-rw-r--r--kexec/libfdt/fdt_rw.c463
-rw-r--r--kexec/libfdt/fdt_strerror.c96
-rw-r--r--kexec/libfdt/fdt_sw.c257
-rw-r--r--kexec/libfdt/fdt_wip.c145
-rw-r--r--kexec/libfdt/libfdt.h1100
-rw-r--r--kexec/libfdt/libfdt_env.h23
-rw-r--r--kexec/libfdt/libfdt_internal.h92
-rw-r--r--kexec/lzma.c253
-rw-r--r--kexec/mem_regions.c169
-rw-r--r--kexec/mem_regions.h22
-rw-r--r--kexec/phys_arch.c28
-rw-r--r--kexec/phys_to_virt.c16
-rw-r--r--kexec/proc_iomem.c13
-rw-r--r--kexec/symbols.c36
-rw-r--r--kexec/virt_to_phys.c7
-rw-r--r--kexec/zlib.c129
201 files changed, 36123 insertions, 0 deletions
diff --git a/kexec/Makefile b/kexec/Makefile
new file mode 100644
index 0000000..11682bf
--- /dev/null
+++ b/kexec/Makefile
@@ -0,0 +1,126 @@
+#
+# kexec (linux booting linux)
+#
+PURGATORY_HEX_C = kexec/purgatory.c
+
+$(PURGATORY_HEX_C): $(PURGATORY) $(BIN_TO_HEX)
+ $(MKDIR) -p $(@D)
+ $(BIN_TO_HEX) purgatory < $(PURGATORY) > $@
+
+KEXEC_SRCS = $(KEXEC_SRCS_base)
+KEXEC_GENERATED_SRCS =
+
+KEXEC_SRCS_base += kexec/kexec.c
+KEXEC_SRCS_base += kexec/ifdown.c
+KEXEC_SRCS_base += kexec/kexec-elf.c
+KEXEC_SRCS_base += kexec/kexec-elf-exec.c
+KEXEC_SRCS_base += kexec/kexec-elf-core.c
+KEXEC_SRCS_base += kexec/kexec-elf-rel.c
+KEXEC_SRCS_base += kexec/kexec-elf-boot.c
+KEXEC_SRCS_base += kexec/kexec-pe-zboot.c
+KEXEC_SRCS_base += kexec/kexec-iomem.c
+KEXEC_SRCS_base += kexec/firmware_memmap.c
+KEXEC_SRCS_base += kexec/crashdump.c
+KEXEC_SRCS_base += kexec/crashdump-xen.c
+KEXEC_SRCS_base += kexec/phys_arch.c
+KEXEC_SRCS_base += kexec/lzma.c
+KEXEC_SRCS_base += kexec/zlib.c
+KEXEC_SRCS_base += kexec/kexec-xen.c
+KEXEC_SRCS_base += kexec/symbols.c
+
+KEXEC_GENERATED_SRCS += $(PURGATORY_HEX_C)
+
+dist += kexec/Makefile \
+ $(KEXEC_SRCS_base) kexec/crashdump-elf.c \
+ kexec/crashdump.h kexec/firmware_memmap.h \
+ kexec/kexec-elf-boot.h \
+ kexec/kexec-elf.h kexec/kexec-sha256.h \
+ kexec/kexec-zlib.h kexec/kexec-lzma.h \
+ kexec/kexec-xen.h \
+ kexec/kexec-syscall.h kexec/kexec.h kexec/kexec.8
+
+dist += kexec/proc_iomem.c
+$(ARCH)_PROC_IOMEM = kexec/proc_iomem.c
+KEXEC_SRCS += $($(ARCH)_PROC_IOMEM)
+
+dist += kexec/virt_to_phys.c
+$(ARCH)_VIRT_TO_PHYS = kexec/virt_to_phys.c
+KEXEC_SRCS += $($(ARCH)_VIRT_TO_PHYS)
+
+dist += kexec/phys_to_virt.c
+$(ARCH)_PHYS_TO_VIRT = kexec/phys_to_virt.c
+KEXEC_SRCS += $($(ARCH)_PHYS_TO_VIRT)
+
+dist += kexec/add_segment.c
+$(ARCH)_ADD_SEGMENT = kexec/add_segment.c
+KEXEC_SRCS += $($(ARCH)_ADD_SEGMENT)
+
+dist += kexec/add_buffer.c
+$(ARCH)_ADD_BUFFER = kexec/add_buffer.c
+KEXEC_SRCS += $($(ARCH)_ADD_BUFFER)
+
+dist += kexec/arch_reuse_initrd.c
+$(ARCH)_ARCH_REUSE_INITRD = kexec/arch_reuse_initrd.c
+KEXEC_SRCS += $($(ARCH)_ARCH_REUSE_INITRD)
+
+dist += kexec/kexec-uImage.c
+$(ARCH)_UIMAGE =
+KEXEC_SRCS += $($(ARCH)_UIMAGE)
+
+dist += kexec/fs2dt.c kexec/fs2dt.h
+$(ARCH)_FS2DT =
+KEXEC_SRCS += $($(ARCH)_FS2DT)
+
+dist += kexec/mem_regions.c kexec/mem_regions.h
+$(ARCH)_MEM_REGIONS =
+KEXEC_SRCS += $($(ARCH)_MEM_REGIONS)
+
+dist += kexec/dt-ops.c kexec/dt-ops.h
+$(ARCH)_DT_OPS =
+KEXEC_SRCS += $($(ARCH)_DT_OPS)
+
+include $(srcdir)/kexec/arch/alpha/Makefile
+include $(srcdir)/kexec/arch/arm/Makefile
+include $(srcdir)/kexec/arch/arm64/Makefile
+include $(srcdir)/kexec/arch/i386/Makefile
+include $(srcdir)/kexec/arch/ia64/Makefile
+include $(srcdir)/kexec/arch/m68k/Makefile
+include $(srcdir)/kexec/arch/mips/Makefile
+include $(srcdir)/kexec/arch/cris/Makefile
+include $(srcdir)/kexec/arch/ppc/Makefile
+include $(srcdir)/kexec/arch/ppc64/Makefile
+include $(srcdir)/kexec/arch/s390/Makefile
+include $(srcdir)/kexec/arch/sh/Makefile
+include $(srcdir)/kexec/arch/x86_64/Makefile
+include $(srcdir)/kexec/arch/hppa/Makefile
+include $(srcdir)/kexec/arch/loongarch/Makefile
+
+KEXEC_SRCS += $($(ARCH)_KEXEC_SRCS)
+
+KEXEC_OBJS = $(call objify, $(KEXEC_SRCS) $(KEXEC_GENERATED_SRCS))
+KEXEC_DEPS = $(call depify, $(KEXEC_OBJS))
+
+clean += $(KEXEC_OBJS) $(KEXEC_DEPS) $(KEXEC_GENERATED_SRCS) \
+ $(KEXEC) $(KEXEC_MANPAGE)
+
+KEXEC = $(SBINDIR)/kexec
+KEXEC_MANPAGE = $(MANDIR)/man8/kexec.8
+
+-include $(KEXEC_DEPS)
+
+$(KEXEC): $(KEXEC_OBJS) $(UTIL_LIB)
+ @$(MKDIR) -p $(@D)
+ $(LINK.o) -o $@ $^ $(CFLAGS) $(LIBS)
+
+$(KEXEC): CPPFLAGS+=-I$(srcdir)/kexec/arch/$(ARCH)/include
+
+kexec/fs2dt.o: CPPFLAGS+=$($(ARCH)_FS2DT_INCLUDE)
+
+$(KEXEC_MANPAGE): kexec/kexec.8
+ @$(MKDIR) -p $(MANDIR)/man8
+ cp $^ $(KEXEC_MANPAGE)
+echo::
+ @echo "KEXEC_SRCS $(KEXEC_SRCS)"
+ @echo "KEXEC_DEPS $(KEXEC_DEPS)"
+ @echo "KEXEC_OBJS $(KEXEC_OBJS)"
+
diff --git a/kexec/add_buffer.c b/kexec/add_buffer.c
new file mode 100644
index 0000000..4d4a55f
--- /dev/null
+++ b/kexec/add_buffer.c
@@ -0,0 +1,14 @@
+#include "kexec.h"
+
+unsigned long add_buffer(struct kexec_info *info,
+ const void *buf,
+ unsigned long bufsz,
+ unsigned long memsz,
+ unsigned long buf_align,
+ unsigned long buf_min,
+ unsigned long buf_max,
+ int buf_end)
+{
+ return add_buffer_virt(info, buf, bufsz, memsz, buf_align,
+ buf_min, buf_max, buf_end);
+}
diff --git a/kexec/add_segment.c b/kexec/add_segment.c
new file mode 100644
index 0000000..029c376
--- /dev/null
+++ b/kexec/add_segment.c
@@ -0,0 +1,8 @@
+#include "kexec.h"
+
+void add_segment(struct kexec_info *info,
+ const void *buf, size_t bufsz,
+ unsigned long base, size_t memsz)
+{
+ return add_segment_phys_virt(info, buf, bufsz, base, memsz, 0);
+}
diff --git a/kexec/arch/alpha/Makefile b/kexec/arch/alpha/Makefile
new file mode 100644
index 0000000..4575d61
--- /dev/null
+++ b/kexec/arch/alpha/Makefile
@@ -0,0 +1,4 @@
+alpha_KEXEC_SRCS=
+dist += kexec/arch/alpha/Makefile kexec/arch/alpha/include/arch/options.h
+ $(alpha_KEXEC_SRCS)
+
diff --git a/kexec/arch/alpha/include/arch/options.h b/kexec/arch/alpha/include/arch/options.h
new file mode 100644
index 0000000..a012c8a
--- /dev/null
+++ b/kexec/arch/alpha/include/arch/options.h
@@ -0,0 +1,20 @@
+#ifndef KEXEC_ARCH_ALPHA_OPTIONS_H
+#define KEXEC_ARCH_ALPHA_OPTIONS_H
+
+#define OPT_ARCH_MAX (OPT_MAX+0)
+
+/* Options relevant to the architecture (excluding loader-specific ones),
+ * in this case none:
+ */
+#define KEXEC_ARCH_OPTIONS \
+ KEXEC_OPTIONS \
+
+#define KEXEC_ARCH_OPT_STR KEXEC_OPT_STR ""
+
+/* See the other architectures for details of these; Alpha has no
+ * loader-specific options yet.
+ */
+#define KEXEC_ALL_OPTIONS KEXEC_ARCH_OPTIONS
+#define KEXEC_ALL_OPT_STR KEXEC_ARCH_OPT_STR
+
+#endif /* KEXEC_ARCH_ALPHA_OPTIONS_H */
diff --git a/kexec/arch/arm/Makefile b/kexec/arch/arm/Makefile
new file mode 100644
index 0000000..4454f47
--- /dev/null
+++ b/kexec/arch/arm/Makefile
@@ -0,0 +1,34 @@
+#
+# kexec arm (linux booting linux)
+#
+include $(srcdir)/kexec/libfdt/Makefile.libfdt
+
+arm_FS2DT = kexec/fs2dt.c
+arm_FS2DT_INCLUDE = -include $(srcdir)/kexec/arch/arm/crashdump-arm.h \
+ -include $(srcdir)/kexec/arch/arm/kexec-arm.h
+
+arm_MEM_REGIONS = kexec/mem_regions.c
+
+arm_KEXEC_SRCS= kexec/arch/arm/kexec-elf-rel-arm.c
+arm_KEXEC_SRCS+= kexec/arch/arm/kexec-zImage-arm.c
+arm_KEXEC_SRCS+= kexec/arch/arm/kexec-uImage-arm.c
+arm_KEXEC_SRCS+= kexec/arch/arm/kexec-arm.c
+arm_KEXEC_SRCS+= kexec/arch/arm/crashdump-arm.c
+arm_KEXEC_SRCS+= kexec/fs2dt.c
+
+libfdt_SRCS += $(LIBFDT_SRCS:%=kexec/libfdt/%)
+
+arm_CPPFLAGS = -I$(srcdir)/kexec/libfdt
+
+# We want 64-bit file IO for kdump to work correctly on LPAE systems
+arm_CPPFLAGS += -D_FILE_OFFSET_BITS=64
+
+arm_KEXEC_SRCS += $(libfdt_SRCS)
+
+arm_UIMAGE = kexec/kexec-uImage.c
+arm_PHYS_TO_VIRT = kexec/arch/arm/phys_to_virt.c
+
+dist += kexec/arch/arm/Makefile $(arm_KEXEC_SRCS) $(arm_PHYS_TO_VIRT) \
+ kexec/arch/arm/iomem.h kexec/arch/arm/phys_to_virt.h \
+ kexec/arch/arm/crashdump-arm.h kexec/arch/arm/kexec-arm.h \
+ kexec/arch/arm/include/arch/options.h
diff --git a/kexec/arch/arm/crashdump-arm.c b/kexec/arch/arm/crashdump-arm.c
new file mode 100644
index 0000000..1ec1826
--- /dev/null
+++ b/kexec/arch/arm/crashdump-arm.c
@@ -0,0 +1,388 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) Nokia Corporation, 2010.
+ * Author: Mika Westerberg
+ *
+ * Based on x86 implementation
+ * Copyright (C) IBM Corporation, 2005. All rights reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <limits.h>
+#include <elf.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../crashdump.h"
+#include "../../mem_regions.h"
+#include "crashdump-arm.h"
+#include "iomem.h"
+#include "phys_to_virt.h"
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define ELFDATANATIVE ELFDATA2LSB
+#elif __BYTE_ORDER == __BIG_ENDIAN
+#define ELFDATANATIVE ELFDATA2MSB
+#else
+#error "Unknown machine endian"
+#endif
+
+/*
+ * Used to save various memory ranges/regions needed for the captured
+ * kernel to boot. (lime memmap= option in other archs)
+ */
+static struct memory_range crash_memory_ranges[CRASH_MAX_MEMORY_RANGES];
+struct memory_ranges usablemem_rgns = {
+ .max_size = CRASH_MAX_MEMORY_RANGES,
+ .ranges = crash_memory_ranges,
+};
+
+/* The boot-time physical memory range reserved for crashkernel region */
+struct memory_range crash_kernel_mem;
+
+/* reserved regions */
+#define CRASH_MAX_RESERVED_RANGES 2
+static struct memory_range crash_reserved_ranges[CRASH_MAX_RESERVED_RANGES];
+static struct memory_ranges crash_reserved_rgns = {
+ .max_size = CRASH_MAX_RESERVED_RANGES,
+ .ranges = crash_reserved_ranges,
+};
+
+struct memory_range elfcorehdr_mem;
+
+static struct crash_elf_info elf_info = {
+ .class = ELFCLASS32,
+ .data = ELFDATANATIVE,
+ .machine = EM_ARM,
+ .page_offset = DEFAULT_PAGE_OFFSET,
+};
+
+extern unsigned long long user_page_offset;
+
+static int get_kernel_page_offset(struct kexec_info *info,
+ struct crash_elf_info *elf_info)
+{
+ unsigned long long stext_sym_addr = get_kernel_sym("_stext");
+ if (stext_sym_addr == 0) {
+ if (user_page_offset != (-1ULL)) {
+ elf_info->page_offset = user_page_offset;
+ dbgprintf("Unable to get _stext symbol from /proc/kallsyms, "
+ "use user provided vaule: %llx\n",
+ elf_info->page_offset);
+ return 0;
+ }
+ elf_info->page_offset = (unsigned long long)DEFAULT_PAGE_OFFSET;
+ dbgprintf("Unable to get _stext symbol from /proc/kallsyms, "
+ "use default: %llx\n",
+ elf_info->page_offset);
+ return 0;
+ } else if ((user_page_offset != (-1ULL)) &&
+ (user_page_offset != stext_sym_addr)) {
+ fprintf(stderr, "PAGE_OFFSET is set to %llx "
+ "instead of user provided value %llx\n",
+ stext_sym_addr & (~KVBASE_MASK),
+ user_page_offset);
+ }
+ elf_info->page_offset = stext_sym_addr & (~KVBASE_MASK);
+ return 0;
+}
+
+/**
+ * crash_get_memory_ranges() - read system physical memory
+ *
+ * Function reads through system physical memory and stores found memory regions
+ * in @crash_memory_ranges. Number of memory regions found is placed in
+ * @crash_memory_nr_ranges. Regions are sorted in ascending order.
+ *
+ * Returns %0 in case of success and %-1 otherwise (errno is set).
+ */
+static int crash_get_memory_ranges(void)
+{
+ int i;
+
+ if (usablemem_rgns.size < 1) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ dbgprint_mem_range("Reserved memory ranges",
+ crash_reserved_rgns.ranges,
+ crash_reserved_rgns.size);
+
+ /*
+ * Exclude all reserved memory from the usable memory regions.
+ * We want to avoid dumping the crashkernel region itself. Note
+ * that this may result memory regions in usablemem_rgns being
+ * split.
+ */
+ for (i = 0; i < crash_reserved_rgns.size; i++) {
+ if (mem_regions_exclude(&usablemem_rgns,
+ &crash_reserved_rgns.ranges[i])) {
+ fprintf(stderr,
+ "Error: Number of crash memory ranges excedeed the max limit\n");
+ errno = ENOMEM;
+ return -1;
+ }
+ }
+
+ /*
+ * Make sure that the memory regions are sorted.
+ */
+ mem_regions_sort(&usablemem_rgns);
+
+ dbgprint_mem_range("Coredump memory ranges",
+ usablemem_rgns.ranges, usablemem_rgns.size);
+
+ return 0;
+}
+
+/**
+ * cmdline_add_elfcorehdr() - adds elfcorehdr= to @cmdline
+ * @cmdline: buffer where parameter is placed
+ * @elfcorehdr: physical address of elfcorehdr
+ *
+ * Function appends 'elfcorehdr=start' at the end of the command line given in
+ * @cmdline. Note that @cmdline must be at least %COMMAND_LINE_SIZE bytes long
+ * (inclunding %NUL).
+ */
+static void cmdline_add_elfcorehdr(char *cmdline, unsigned long elfcorehdr)
+{
+ char buf[COMMAND_LINE_SIZE];
+ int buflen;
+
+ buflen = snprintf(buf, sizeof(buf), "%s elfcorehdr=%#lx",
+ cmdline, elfcorehdr);
+ if (buflen < 0)
+ die("Failed to construct elfcorehdr= command line parameter\n");
+ if (buflen >= sizeof(buf))
+ die("Command line overflow\n");
+
+ (void) strncpy(cmdline, buf, COMMAND_LINE_SIZE);
+ cmdline[COMMAND_LINE_SIZE - 1] = '\0';
+}
+
+/**
+ * cmdline_add_mem() - adds mem= parameter to kernel command line
+ * @cmdline: buffer where parameter is placed
+ * @size: size of the kernel reserved memory (in bytes)
+ *
+ * This function appends 'mem=size' at the end of the command line given in
+ * @cmdline. Note that @cmdline must be at least %COMMAND_LINE_SIZE bytes long
+ * (including %NUL).
+ */
+static void cmdline_add_mem(char *cmdline, unsigned long size)
+{
+ char buf[COMMAND_LINE_SIZE];
+ int buflen;
+
+ buflen = snprintf(buf, sizeof(buf), "%s mem=%ldK", cmdline, size >> 10);
+ if (buflen < 0)
+ die("Failed to construct mem= command line parameter\n");
+ if (buflen >= sizeof(buf))
+ die("Command line overflow\n");
+
+ (void) strncpy(cmdline, buf, COMMAND_LINE_SIZE);
+ cmdline[COMMAND_LINE_SIZE - 1] = '\0';
+}
+
+static unsigned long long range_size(const struct memory_range *r)
+{
+ return r->end - r->start + 1;
+}
+
+static void dump_memory_ranges(void)
+{
+ int i;
+
+ if (!kexec_debug)
+ return;
+
+ dbgprintf("crashkernel: [%#llx - %#llx] (%ldM)\n",
+ crash_kernel_mem.start, crash_kernel_mem.end,
+ (unsigned long)range_size(&crash_kernel_mem) >> 20);
+
+ for (i = 0; i < usablemem_rgns.size; i++) {
+ struct memory_range *r = usablemem_rgns.ranges + i;
+ dbgprintf("memory range: [%#llx - %#llx] (%ldM)\n",
+ r->start, r->end, (unsigned long)range_size(r) >> 20);
+ }
+}
+
+/**
+ * load_crashdump_segments() - loads additional segments needed for kdump
+ * @info: kexec info structure
+ * @mod_cmdline: kernel command line
+ *
+ * This function loads additional segments which are needed for the dump capture
+ * kernel. It also updates kernel command line passed in @mod_cmdline to have
+ * right parameters for the dump capture kernel.
+ *
+ * Return %0 in case of success and %-1 in case of error.
+ */
+int load_crashdump_segments(struct kexec_info *info, char *mod_cmdline)
+{
+ unsigned long elfcorehdr;
+ unsigned long bufsz;
+ void *buf;
+ int err;
+ int last_ranges;
+
+ /*
+ * First fetch all the memory (RAM) ranges that we are going to pass to
+ * the crashdump kernel during panic.
+ */
+ err = crash_get_memory_ranges();
+ if (err)
+ return err;
+
+ /*
+ * Now that we have memory regions sorted, we can use first memory
+ * region as PHYS_OFFSET.
+ */
+ phys_offset = usablemem_rgns.ranges->start;
+
+ if (get_kernel_page_offset(info, &elf_info))
+ return -1;
+
+ dbgprintf("phys offset = %#llx, page offset = %llx\n",
+ phys_offset, elf_info.page_offset);
+
+ /*
+ * Ensure that the crash kernel memory range is sane. The crash kernel
+ * must be located within memory which is visible during booting.
+ */
+ if (crash_kernel_mem.end > ARM_MAX_VIRTUAL) {
+ fprintf(stderr,
+ "Crash kernel memory [0x%llx-0x%llx] is inaccessible at boot - unable to load crash kernel\n",
+ crash_kernel_mem.start, crash_kernel_mem.end);
+ return -1;
+ }
+
+ last_ranges = usablemem_rgns.size - 1;
+ if (last_ranges < 0)
+ last_ranges = 0;
+
+ if (crash_memory_ranges[last_ranges].end > UINT32_MAX) {
+ dbgprintf("Using 64-bit ELF core format\n");
+
+ /* for support LPAE enabled kernel*/
+ elf_info.class = ELFCLASS64;
+
+ err = crash_create_elf64_headers(info, &elf_info,
+ usablemem_rgns.ranges,
+ usablemem_rgns.size, &buf, &bufsz,
+ ELF_CORE_HEADER_ALIGN);
+ } else {
+ dbgprintf("Using 32-bit ELF core format\n");
+ err = crash_create_elf32_headers(info, &elf_info,
+ usablemem_rgns.ranges,
+ usablemem_rgns.size, &buf, &bufsz,
+ ELF_CORE_HEADER_ALIGN);
+ }
+ if (err)
+ return err;
+
+ /*
+ * We allocate ELF core header from the end of the memory area reserved
+ * for the crashkernel. We align the header to SECTION_SIZE (which is
+ * 1MB) so that available memory passed in kernel command line will be
+ * aligned to 1MB. This is because kernel create_mapping() wants memory
+ * regions to be aligned to SECTION_SIZE.
+ */
+ elfcorehdr = add_buffer_phys_virt(info, buf, bufsz, bufsz, 1 << 20,
+ crash_kernel_mem.start,
+ crash_kernel_mem.end, -1, 0);
+
+ elfcorehdr_mem.start = elfcorehdr;
+ elfcorehdr_mem.end = elfcorehdr + bufsz - 1;
+
+ dbgprintf("elfcorehdr 0x%llx-0x%llx\n", elfcorehdr_mem.start,
+ elfcorehdr_mem.end);
+ cmdline_add_elfcorehdr(mod_cmdline, elfcorehdr);
+
+ /*
+ * Add 'mem=size' parameter to dump capture kernel command line. This
+ * prevents the dump capture kernel from using any other memory regions
+ * which belong to the primary kernel.
+ */
+ cmdline_add_mem(mod_cmdline, elfcorehdr - crash_kernel_mem.start);
+
+ dump_memory_ranges();
+ dbgprintf("kernel command line: \"%s\"\n", mod_cmdline);
+
+ return 0;
+}
+
+/**
+ * iomem_range_callback() - callback called for each iomem region
+ * @data: not used
+ * @nr: not used
+ * @str: name of the memory region (not NULL terminated)
+ * @base: start address of the memory region
+ * @length: size of the memory region
+ *
+ * This function is called for each memory range in /proc/iomem, stores
+ * the location of the crash kernel range into @crash_kernel_mem, and
+ * stores the system RAM into @usablemem_rgns.
+ */
+static int iomem_range_callback(void *UNUSED(data), int UNUSED(nr),
+ char *str, unsigned long long base,
+ unsigned long long length)
+{
+ if (strncmp(str, CRASH_KERNEL_BOOT, strlen(CRASH_KERNEL_BOOT)) == 0) {
+ crash_kernel_mem.start = base;
+ crash_kernel_mem.end = base + length - 1;
+ crash_kernel_mem.type = RANGE_RAM;
+ return mem_regions_add(&crash_reserved_rgns,
+ base, length, RANGE_RAM);
+ }
+ else if (strncmp(str, CRASH_KERNEL, strlen(CRASH_KERNEL)) == 0) {
+ if (crash_kernel_mem.start == crash_kernel_mem.end) {
+ crash_kernel_mem.start = base;
+ crash_kernel_mem.end = base + length - 1;
+ crash_kernel_mem.type = RANGE_RAM;
+ }
+ return mem_regions_add(&crash_reserved_rgns,
+ base, length, RANGE_RAM);
+ }
+ else if (strncmp(str, SYSTEM_RAM, strlen(SYSTEM_RAM)) == 0) {
+ return mem_regions_add(&usablemem_rgns,
+ base, length, RANGE_RAM);
+ }
+ return 0;
+}
+
+/**
+ * is_crashkernel_mem_reserved() - check for the crashkernel reserved region
+ *
+ * Check for the crashkernel reserved region in /proc/iomem, and return
+ * true if it is present, or false otherwise. We use this to store the
+ * location of this region, and system RAM regions.
+ */
+int is_crashkernel_mem_reserved(void)
+{
+ kexec_iomem_for_each_line(NULL, iomem_range_callback, NULL);
+
+ return crash_kernel_mem.start != crash_kernel_mem.end;
+}
+
+int get_crash_kernel_load_range(uint64_t *start, uint64_t *end)
+{
+ return parse_iomem_single("Crash kernel\n", start, end);
+}
diff --git a/kexec/arch/arm/crashdump-arm.h b/kexec/arch/arm/crashdump-arm.h
new file mode 100644
index 0000000..bbdf8bf
--- /dev/null
+++ b/kexec/arch/arm/crashdump-arm.h
@@ -0,0 +1,27 @@
+#ifndef CRASHDUMP_ARM_H
+#define CRASHDUMP_ARM_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define COMMAND_LINE_SIZE 1024
+#define DEFAULT_PAGE_OFFSET (0xc0000000)
+#define KVBASE_MASK (0x1ffffff)
+#define CRASH_MAX_MEMORY_RANGES 32
+#define ARM_MAX_VIRTUAL UINT32_MAX
+
+
+extern struct memory_ranges usablemem_rgns;
+extern struct memory_range crash_kernel_mem;
+extern struct memory_range elfcorehdr_mem;
+
+struct kexec_info;
+
+extern int load_crashdump_segments(struct kexec_info *, char *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* CRASHDUMP_ARM_H */
diff --git a/kexec/arch/arm/include/arch/options.h b/kexec/arch/arm/include/arch/options.h
new file mode 100644
index 0000000..6fabfb7
--- /dev/null
+++ b/kexec/arch/arm/include/arch/options.h
@@ -0,0 +1,52 @@
+#ifndef KEXEC_ARCH_ARM_OPTIONS_H
+#define KEXEC_ARCH_ARM_OPTIONS_H
+
+#define OPT_DT_NO_OLD_ROOT (OPT_MAX+0)
+#define OPT_ARCH_MAX (OPT_MAX+1)
+
+#define OPT_DTB (OPT_ARCH_MAX+0)
+#define OPT_ATAGS (OPT_ARCH_MAX+1)
+#define OPT_IMAGE_SIZE (OPT_ARCH_MAX+2)
+#define OPT_PAGE_OFFSET (OPT_ARCH_MAX+3)
+#define OPT_APPEND (OPT_ARCH_MAX+4)
+#define OPT_RAMDISK (OPT_ARCH_MAX+5)
+
+/* Options relevant to the architecture (excluding loader-specific ones),
+ * in this case none:
+ */
+#define KEXEC_ARCH_OPTIONS \
+ KEXEC_OPTIONS \
+ { "dt-no-old-root", 0, 0, OPT_DT_NO_OLD_ROOT }, \
+
+#define KEXEC_ARCH_OPT_STR KEXEC_OPT_STR ""
+
+/* The following two #defines list ALL of the options added by all of the
+ * architecture's loaders.
+ * o main() uses this complete list to scan for its options, ignoring
+ * arch-specific/loader-specific ones.
+ * o Then, arch_process_options() uses this complete list to scan for its
+ * options, ignoring general/loader-specific ones.
+ * o Then, the file_type[n].load re-scans for options, using
+ * KEXEC_ARCH_OPTIONS plus its loader-specific options subset.
+ * Any unrecognised options cause an error here.
+ *
+ * This is done so that main()'s/arch_process_options()'s getopt_long() calls
+ * don't choose a kernel filename from random arguments to options they don't
+ * recognise -- as they now recognise (if not act upon) all possible options.
+ */
+#define KEXEC_ALL_OPTIONS \
+ KEXEC_ARCH_OPTIONS \
+ { "command-line", 1, 0, OPT_APPEND }, \
+ { "append", 1, 0, OPT_APPEND }, \
+ { "initrd", 1, 0, OPT_RAMDISK }, \
+ { "ramdisk", 1, 0, OPT_RAMDISK }, \
+ { "dtb", 1, 0, OPT_DTB }, \
+ { "atags", 0, 0, OPT_ATAGS }, \
+ { "image-size", 1, 0, OPT_IMAGE_SIZE }, \
+ { "page-offset", 1, 0, OPT_PAGE_OFFSET },
+
+#define KEXEC_ALL_OPT_STR KEXEC_ARCH_OPT_STR ""
+
+extern unsigned int kexec_arm_image_size;
+
+#endif /* KEXEC_ARCH_ARM_OPTIONS_H */
diff --git a/kexec/arch/arm/iomem.h b/kexec/arch/arm/iomem.h
new file mode 100644
index 0000000..85f958e
--- /dev/null
+++ b/kexec/arch/arm/iomem.h
@@ -0,0 +1,9 @@
+#ifndef IOMEM_H
+#define IOMEM_H
+
+#define SYSTEM_RAM "System RAM\n"
+#define SYSTEM_RAM_BOOT "System RAM (boot alias)\n"
+#define CRASH_KERNEL "Crash kernel\n"
+#define CRASH_KERNEL_BOOT "Crash kernel (boot alias)\n"
+
+#endif
diff --git a/kexec/arch/arm/kexec-arm.c b/kexec/arch/arm/kexec-arm.c
new file mode 100644
index 0000000..49f35b1
--- /dev/null
+++ b/kexec/arch/arm/kexec-arm.c
@@ -0,0 +1,150 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * modified from kexec-ppc.c
+ *
+ */
+
+#define _GNU_SOURCE
+#include <stddef.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <getopt.h>
+#include <unistd.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "kexec-arm.h"
+#include <arch/options.h>
+#include "../../fs2dt.h"
+#include "iomem.h"
+
+#define MAX_MEMORY_RANGES 64
+#define MAX_LINE 160
+static struct memory_range memory_range[MAX_MEMORY_RANGES];
+
+/* Return a sorted list of available memory ranges. */
+int get_memory_ranges(struct memory_range **range, int *ranges,
+ unsigned long UNUSED(kexec_flags))
+{
+ const char *iomem = proc_iomem();
+ int memory_ranges = 0;
+ char line[MAX_LINE];
+ FILE *fp;
+ fp = fopen(iomem, "r");
+ if (!fp) {
+ fprintf(stderr, "Cannot open %s: %s\n",
+ iomem, strerror(errno));
+ return -1;
+ }
+
+ while(fgets(line, sizeof(line), fp) != 0) {
+ unsigned long long start, end;
+ char *str;
+ int type;
+ int consumed;
+ int count;
+ if (memory_ranges >= MAX_MEMORY_RANGES)
+ break;
+ count = sscanf(line, "%llx-%llx : %n",
+ &start, &end, &consumed);
+ if (count != 2)
+ continue;
+ str = line + consumed;
+
+ if (memcmp(str, SYSTEM_RAM_BOOT, strlen(SYSTEM_RAM_BOOT)) == 0 ||
+ memcmp(str, SYSTEM_RAM, strlen(SYSTEM_RAM)) == 0) {
+ type = RANGE_RAM;
+ }
+ else if (memcmp(str, "reserved\n", 9) == 0) {
+ type = RANGE_RESERVED;
+ }
+ else {
+ continue;
+ }
+
+ memory_range[memory_ranges].start = start;
+ memory_range[memory_ranges].end = end;
+ memory_range[memory_ranges].type = type;
+ memory_ranges++;
+ }
+ fclose(fp);
+ *range = memory_range;
+ *ranges = memory_ranges;
+
+ dbgprint_mem_range("MEMORY RANGES", *range, *ranges);
+
+ return 0;
+}
+
+/* Supported file types and callbacks */
+struct file_type file_type[] = {
+ /* uImage is probed before zImage because the latter also accepts
+ uncompressed images. */
+ {"uImage", uImage_arm_probe, uImage_arm_load, zImage_arm_usage},
+ {"zImage", zImage_arm_probe, zImage_arm_load, zImage_arm_usage},
+};
+int file_types = sizeof(file_type) / sizeof(file_type[0]);
+
+void arch_usage(void)
+{
+ printf(" --image-size=<size>\n"
+ " Specify the assumed total image size of\n"
+ " the kernel that is about to be loaded,\n"
+ " including the .bss section, as reported\n"
+ " by 'arm-linux-size vmlinux'. If not\n"
+ " specified, this value is implicitly set\n"
+ " to the compressed images size * 4.\n"
+ " --dt-no-old-root\n"
+ " do not reuse old kernel root= param.\n"
+ " while creating flatten device tree.\n");
+}
+
+int arch_process_options(int argc, char **argv)
+{
+ /* We look for all options so getopt_long doesn't start reordering
+ * argv[] before file_type[n].load() gets a look in.
+ */
+ static const struct option options[] = {
+ KEXEC_ALL_OPTIONS
+ { 0, 0, NULL, 0 },
+ };
+ static const char short_options[] = KEXEC_ALL_OPT_STR;
+ int opt;
+
+ opterr = 0; /* Don't complain about unrecognized options here */
+ while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch(opt) {
+ case OPT_DT_NO_OLD_ROOT:
+ dt_no_old_root = 1;
+ break;
+ default:
+ break;
+ }
+ }
+ /* Reset getopt for the next pass; called in other source modules */
+ opterr = 1;
+ optind = 1;
+ return 0;
+}
+
+const struct arch_map_entry arches[] = {
+ { "arm", KEXEC_ARCH_ARM },
+ { NULL, 0 },
+};
+
+int arch_compat_trampoline(struct kexec_info *UNUSED(info))
+{
+ return 0;
+}
+
+void arch_update_purgatory(struct kexec_info *UNUSED(info))
+{
+}
+
+/* return 1 if /sys/firmware/fdt exists, otherwise return 0 */
+int have_sysfs_fdt(void)
+{
+ return !access(SYSFS_FDT, F_OK);
+}
diff --git a/kexec/arch/arm/kexec-arm.h b/kexec/arch/arm/kexec-arm.h
new file mode 100644
index 0000000..a74cce2
--- /dev/null
+++ b/kexec/arch/arm/kexec-arm.h
@@ -0,0 +1,22 @@
+#ifndef KEXEC_ARM_H
+#define KEXEC_ARM_H
+
+#include <sys/types.h>
+
+#define SYSFS_FDT "/sys/firmware/fdt"
+#define BOOT_BLOCK_VERSION 17
+#define BOOT_BLOCK_LAST_COMP_VERSION 16
+
+extern off_t initrd_base, initrd_size;
+
+int zImage_arm_probe(const char *buf, off_t len);
+int zImage_arm_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void zImage_arm_usage(void);
+
+int uImage_arm_probe(const char *buf, off_t len);
+int uImage_arm_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+extern int have_sysfs_fdt(void);
+
+#endif /* KEXEC_ARM_H */
diff --git a/kexec/arch/arm/kexec-elf-rel-arm.c b/kexec/arch/arm/kexec-elf-rel-arm.c
new file mode 100644
index 0000000..a939cf4
--- /dev/null
+++ b/kexec/arch/arm/kexec-elf-rel-arm.c
@@ -0,0 +1,36 @@
+#include <stdio.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+
+int machine_verify_elf_rel(struct mem_ehdr *ehdr)
+{
+ if (ehdr->ei_data != ELFDATA2MSB) {
+ return 0;
+ }
+ if (ehdr->ei_class != ELFCLASS32) {
+ return 0;
+ }
+ if (ehdr->e_machine != EM_ARM)
+ {
+ return 0;
+ }
+ return 1;
+}
+
+void machine_apply_elf_rel(struct mem_ehdr *UNUSED(ehdr),
+ struct mem_sym *UNUSED(sym), unsigned long r_type, void *location,
+ unsigned long address, unsigned long value)
+{
+ switch(r_type) {
+ case R_ARM_ABS32:
+ *((uint32_t *)location) += value;
+ break;
+ case R_ARM_REL32:
+ *((uint32_t *)location) += value - address;
+ break;
+ default:
+ die("Unknown rel relocation: %lu\n", r_type);
+ break;
+ }
+}
diff --git a/kexec/arch/arm/kexec-uImage-arm.c b/kexec/arch/arm/kexec-uImage-arm.c
new file mode 100644
index 0000000..03c2f4d
--- /dev/null
+++ b/kexec/arch/arm/kexec-uImage-arm.c
@@ -0,0 +1,22 @@
+/*
+ * uImage support added by Marc Andre Tanner <mat@brain-dump.org>
+ */
+#include <stdint.h>
+#include <string.h>
+#include <sys/types.h>
+#include <image.h>
+#include <kexec-uImage.h>
+#include "../../kexec.h"
+#include "kexec-arm.h"
+
+int uImage_arm_probe(const char *buf, off_t len)
+{
+ return uImage_probe_kernel(buf, len, IH_ARCH_ARM);
+}
+
+int uImage_arm_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ return zImage_arm_load(argc, argv, buf + sizeof(struct image_header),
+ len - sizeof(struct image_header), info);
+}
diff --git a/kexec/arch/arm/kexec-zImage-arm.c b/kexec/arch/arm/kexec-zImage-arm.c
new file mode 100644
index 0000000..8b474dd
--- /dev/null
+++ b/kexec/arch/arm/kexec-zImage-arm.c
@@ -0,0 +1,914 @@
+/*
+ * - 08/21/2007 ATAG support added by Uli Luckas <u.luckas@road.de>
+ *
+ */
+#define _GNU_SOURCE
+#define _XOPEN_SOURCE
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <unistd.h>
+#include <libfdt.h>
+#include <arch/options.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "kexec-arm.h"
+#include "../../fs2dt.h"
+#include "crashdump-arm.h"
+#include "iomem.h"
+
+#define BOOT_PARAMS_SIZE 1536
+
+off_t initrd_base, initrd_size;
+unsigned int kexec_arm_image_size = 0;
+unsigned long long user_page_offset = (-1ULL);
+
+struct zimage_header {
+ uint32_t instr[9];
+ uint32_t magic;
+#define ZIMAGE_MAGIC cpu_to_le32(0x016f2818)
+ uint32_t start;
+ uint32_t end;
+ uint32_t endian;
+
+ /* Extension to the data passed to the boot agent. The offset
+ * points at a tagged table following a similar format to the
+ * ATAGs.
+ */
+ uint32_t magic2;
+#define ZIMAGE_MAGIC2 (0x45454545)
+ uint32_t extension_tag_offset;
+};
+
+struct android_image {
+ char magic[8];
+ uint32_t kernel_size;
+ uint32_t kernel_addr;
+ uint32_t ramdisk_size;
+ uint32_t ramdisk_addr;
+ uint32_t stage2_size;
+ uint32_t stage2_addr;
+ uint32_t tags_addr;
+ uint32_t page_size;
+ uint32_t reserved1;
+ uint32_t reserved2;
+ char name[16];
+ char command_line[512];
+ uint32_t chksum[8];
+};
+
+struct tag_header {
+ uint32_t size;
+ uint32_t tag;
+};
+
+/* The list must start with an ATAG_CORE node */
+#define ATAG_CORE 0x54410001
+
+struct tag_core {
+ uint32_t flags; /* bit 0 = read-only */
+ uint32_t pagesize;
+ uint32_t rootdev;
+};
+
+/* it is allowed to have multiple ATAG_MEM nodes */
+#define ATAG_MEM 0x54410002
+
+struct tag_mem32 {
+ uint32_t size;
+ uint32_t start; /* physical start address */
+};
+
+/* describes where the compressed ramdisk image lives (virtual address) */
+/*
+ * this one accidentally used virtual addresses - as such,
+ * it's deprecated.
+ */
+#define ATAG_INITRD 0x54410005
+
+/* describes where the compressed ramdisk image lives (physical address) */
+#define ATAG_INITRD2 0x54420005
+
+struct tag_initrd {
+ uint32_t start; /* physical start address */
+ uint32_t size; /* size of compressed ramdisk image in bytes */
+};
+
+/* command line: \0 terminated string */
+#define ATAG_CMDLINE 0x54410009
+
+struct tag_cmdline {
+ char cmdline[1]; /* this is the minimum size */
+};
+
+/* The list ends with an ATAG_NONE node. */
+#define ATAG_NONE 0x00000000
+
+struct tag {
+ struct tag_header hdr;
+ union {
+ struct tag_core core;
+ struct tag_mem32 mem;
+ struct tag_initrd initrd;
+ struct tag_cmdline cmdline;
+ } u;
+};
+
+#define tag_next(t) ((struct tag *)((uint32_t *)(t) + (t)->hdr.size))
+#define byte_size(t) ((t)->hdr.size << 2)
+#define tag_size(type) ((sizeof(struct tag_header) + sizeof(struct type) + 3) >> 2)
+
+struct zimage_tag {
+ struct tag_header hdr;
+ union {
+#define ZIMAGE_TAG_KRNL_SIZE cpu_to_le32(0x5a534c4b)
+ struct zimage_krnl_size {
+ uint32_t size_ptr;
+ uint32_t bss_size;
+ } krnl_size;
+ } u;
+};
+
+int zImage_arm_probe(const char *UNUSED(buf), off_t UNUSED(len))
+{
+ /*
+ * Only zImage loading is supported. Do not check if
+ * the buffer is valid kernel image
+ */
+ return 0;
+}
+
+void zImage_arm_usage(void)
+{
+ printf( " --command-line=STRING Set the kernel command line to STRING.\n"
+ " --append=STRING Set the kernel command line to STRING.\n"
+ " --initrd=FILE Use FILE as the kernel's initial ramdisk.\n"
+ " --ramdisk=FILE Use FILE as the kernel's initial ramdisk.\n"
+ " --dtb=FILE Use FILE as the fdt blob.\n"
+ " --atags Use ATAGs instead of device-tree.\n"
+ " --page-offset=PAGE_OFFSET\n"
+ " Set PAGE_OFFSET of crash dump vmcore\n"
+ );
+}
+
+static
+struct tag * atag_read_tags(void)
+{
+ static unsigned long buf[BOOT_PARAMS_SIZE];
+ const char fn[]= "/proc/atags";
+ FILE *fp;
+ fp = fopen(fn, "r");
+ if (!fp) {
+ fprintf(stderr, "Cannot open %s: %s\n",
+ fn, strerror(errno));
+ return NULL;
+ }
+
+ if (!fread(buf, sizeof(buf[1]), BOOT_PARAMS_SIZE, fp)) {
+ fclose(fp);
+ return NULL;
+ }
+
+ if (ferror(fp)) {
+ fprintf(stderr, "Cannot read %s: %s\n",
+ fn, strerror(errno));
+ fclose(fp);
+ return NULL;
+ }
+
+ fclose(fp);
+ return (struct tag *) buf;
+}
+
+static
+int create_mem32_tag(struct tag_mem32 *tag_mem32)
+{
+ const char fn[]= "/proc/device-tree/memory/reg";
+ uint32_t tmp[2];
+ FILE *fp;
+
+ fp = fopen(fn, "r");
+ if (!fp) {
+ fprintf(stderr, "Cannot open %s: %m\n", fn);
+ return -1;
+ }
+
+ if (fread(tmp, sizeof(tmp[0]), 2, fp) != 2) {
+ fprintf(stderr, "Short read %s\n", fn);
+ fclose(fp);
+ return -1;
+ }
+
+ if (ferror(fp)) {
+ fprintf(stderr, "Cannot read %s: %m\n", fn);
+ fclose(fp);
+ return -1;
+ }
+
+ /* atags_mem32 has base/size fields reversed! */
+ tag_mem32->size = be32_to_cpu(tmp[1]);
+ tag_mem32->start = be32_to_cpu(tmp[0]);
+
+ fclose(fp);
+ return 0;
+}
+
+static
+int atag_arm_load(struct kexec_info *info, unsigned long base,
+ const char *command_line, off_t command_line_len, const char *initrd)
+{
+ struct tag *saved_tags = atag_read_tags();
+ char *buf;
+ off_t len;
+ struct tag *params;
+
+ buf = xmalloc(getpagesize());
+ memset(buf, 0xff, getpagesize());
+ params = (struct tag *)buf;
+
+ if (saved_tags) {
+ // Copy tags
+ saved_tags = (struct tag *) saved_tags;
+ while(byte_size(saved_tags)) {
+ switch (saved_tags->hdr.tag) {
+ case ATAG_INITRD:
+ case ATAG_INITRD2:
+ case ATAG_CMDLINE:
+ case ATAG_NONE:
+ // skip these tags
+ break;
+ default:
+ // copy all other tags
+ memcpy(params, saved_tags, byte_size(saved_tags));
+ params = tag_next(params);
+ }
+ saved_tags = tag_next(saved_tags);
+ }
+ } else {
+ params->hdr.size = 2;
+ params->hdr.tag = ATAG_CORE;
+ params = tag_next(params);
+
+ if (!create_mem32_tag(&params->u.mem)) {
+ params->hdr.size = 4;
+ params->hdr.tag = ATAG_MEM;
+ params = tag_next(params);
+ }
+ }
+
+ if (initrd) {
+ params->hdr.size = tag_size(tag_initrd);
+ params->hdr.tag = ATAG_INITRD2;
+ params->u.initrd.start = initrd_base;
+ params->u.initrd.size = initrd_size;
+ params = tag_next(params);
+ }
+
+ if (command_line) {
+ params->hdr.size = (sizeof(struct tag_header) + command_line_len + 3) >> 2;
+ params->hdr.tag = ATAG_CMDLINE;
+ memcpy(params->u.cmdline.cmdline, command_line,
+ command_line_len);
+ params->u.cmdline.cmdline[command_line_len - 1] = '\0';
+ params = tag_next(params);
+ }
+
+ params->hdr.size = 0;
+ params->hdr.tag = ATAG_NONE;
+
+ len = ((char *)params - buf) + sizeof(struct tag_header);
+
+ add_segment(info, buf, len, base, len);
+
+ return 0;
+}
+
+static int setup_dtb_prop(char **bufp, off_t *sizep, int parentoffset,
+ const char *node_name, const char *prop_name,
+ const void *val, int len)
+{
+ char *dtb_buf;
+ off_t dtb_size;
+ int off;
+ int prop_len = 0;
+ const struct fdt_property *prop;
+
+ if ((bufp == NULL) || (sizep == NULL) || (*bufp == NULL))
+ die("Internal error\n");
+
+ dtb_buf = *bufp;
+ dtb_size = *sizep;
+
+ /* check if the subnode has already exist */
+ off = fdt_subnode_offset(dtb_buf, parentoffset, node_name);
+ if (off == -FDT_ERR_NOTFOUND) {
+ dtb_size += fdt_node_len(node_name);
+ fdt_set_totalsize(dtb_buf, dtb_size);
+ dtb_buf = xrealloc(dtb_buf, dtb_size);
+ off = fdt_add_subnode(dtb_buf, parentoffset, node_name);
+ }
+
+ if (off < 0) {
+ fprintf(stderr, "FDT: Error adding %s node.\n", node_name);
+ return -1;
+ }
+
+ prop = fdt_get_property(dtb_buf, off, prop_name, &prop_len);
+ if ((prop == NULL) && (prop_len != -FDT_ERR_NOTFOUND)) {
+ die("FDT: fdt_get_property");
+ } else if (prop == NULL) {
+ /* prop_len == -FDT_ERR_NOTFOUND */
+ /* prop doesn't exist */
+ dtb_size += fdt_prop_len(prop_name, len);
+ } else {
+ if (prop_len < len)
+ dtb_size += FDT_TAGALIGN(len - prop_len);
+ }
+
+ if (fdt_totalsize(dtb_buf) < dtb_size) {
+ fdt_set_totalsize(dtb_buf, dtb_size);
+ dtb_buf = xrealloc(dtb_buf, dtb_size);
+ }
+
+ if (fdt_setprop(dtb_buf, off, prop_name,
+ val, len) != 0) {
+ fprintf(stderr, "FDT: Error setting %s/%s property.\n",
+ node_name, prop_name);
+ return -1;
+ }
+ *bufp = dtb_buf;
+ *sizep = dtb_size;
+ return 0;
+}
+
+static const struct zimage_tag *find_extension_tag(const char *buf, off_t len,
+ uint32_t tag_id)
+{
+ const struct zimage_header *hdr = (const struct zimage_header *)buf;
+ const struct zimage_tag *tag;
+ uint32_t offset, size;
+ uint32_t max = len - sizeof(struct tag_header);
+
+ if (len < sizeof(*hdr) ||
+ hdr->magic != ZIMAGE_MAGIC ||
+ hdr->magic2 != ZIMAGE_MAGIC2)
+ return NULL;
+
+ for (offset = hdr->extension_tag_offset;
+ (tag = (void *)(buf + offset)) != NULL &&
+ offset < max &&
+ (size = le32_to_cpu(byte_size(tag))) != 0 &&
+ offset + size < len;
+ offset += size) {
+ dbgprintf(" offset 0x%08x tag 0x%08x size %u\n",
+ offset, le32_to_cpu(tag->hdr.tag), size);
+ if (tag->hdr.tag == tag_id)
+ return tag;
+ }
+
+ return NULL;
+}
+
+static int get_cells_size(void *fdt, uint32_t *address_cells,
+ uint32_t *size_cells)
+{
+ int nodeoffset;
+ const uint32_t *prop = NULL;
+ int prop_len;
+
+ /* default values */
+ *address_cells = 1;
+ *size_cells = 1;
+
+ /* under root node */
+ nodeoffset = fdt_path_offset(fdt, "/");
+ if (nodeoffset < 0)
+ return -1;
+
+ prop = fdt_getprop(fdt, nodeoffset, "#address-cells", &prop_len);
+ if (prop) {
+ if (prop_len != sizeof(*prop))
+ return -1;
+
+ *address_cells = fdt32_to_cpu(*prop);
+ }
+
+ prop = fdt_getprop(fdt, nodeoffset, "#size-cells", &prop_len);
+ if (prop) {
+ if (prop_len != sizeof(*prop))
+ return -1;
+
+ *size_cells = fdt32_to_cpu(*prop);
+ }
+
+ dbgprintf("%s: #address-cells:%d #size-cells:%d\n", __func__,
+ *address_cells, *size_cells);
+ return 0;
+}
+
+static bool cells_size_fitted(uint32_t address_cells, uint32_t size_cells,
+ struct memory_range *range)
+{
+ dbgprintf("%s: %llx-%llx\n", __func__, range->start, range->end);
+
+ /* if *_cells >= 2, cells can hold 64-bit values anyway */
+ if ((address_cells == 1) && (range->start >= (1ULL << 32)))
+ return false;
+
+ if ((size_cells == 1) &&
+ ((range->end - range->start + 1) >= (1ULL << 32)))
+ return false;
+
+ return true;
+}
+
+static void fill_property(void *buf, uint64_t val, uint32_t cells)
+{
+ uint32_t val32;
+ int i;
+
+ if (cells == 1) {
+ val32 = cpu_to_fdt32((uint32_t)val);
+ memcpy(buf, &val32, sizeof(uint32_t));
+ } else {
+ for (i = 0;
+ i < (cells * sizeof(uint32_t) - sizeof(uint64_t)); i++)
+ *(char *)buf++ = 0;
+
+ val = cpu_to_fdt64(val);
+ memcpy(buf, &val, sizeof(uint64_t));
+ }
+}
+
+static int setup_dtb_prop_range(char **bufp, off_t *sizep, int parentoffset,
+ const char *node_name, const char *prop_name,
+ struct memory_range *range,
+ uint32_t address_cells, uint32_t size_cells)
+{
+ void *buf, *prop;
+ size_t buf_size;
+ int result;
+
+ buf_size = (address_cells + size_cells) * sizeof(uint32_t);
+ prop = buf = xmalloc(buf_size);
+
+ fill_property(prop, range->start, address_cells);
+ prop += address_cells * sizeof(uint32_t);
+
+ fill_property(prop, range->end - range->start + 1, size_cells);
+ prop += size_cells * sizeof(uint32_t);
+
+ result = setup_dtb_prop(bufp, sizep, parentoffset, node_name,
+ prop_name, buf, buf_size);
+
+ free(buf);
+
+ return result;
+}
+
+int zImage_arm_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ unsigned long page_size = getpagesize();
+ unsigned long base, kernel_base;
+ unsigned int atag_offset = 0x1000; /* 4k offset from memory start */
+ unsigned int extra_size = 0x8000; /* TEXT_OFFSET */
+ uint32_t address_cells, size_cells;
+ const struct zimage_tag *tag;
+ size_t kernel_buf_size;
+ size_t kernel_mem_size;
+ const char *command_line;
+ char *modified_cmdline = NULL;
+ off_t command_line_len;
+ const char *ramdisk;
+ const char *ramdisk_buf;
+ int opt;
+ int use_atags;
+ int result;
+ char *dtb_buf;
+ off_t dtb_length;
+ char *dtb_file;
+ off_t dtb_offset;
+ char *end;
+
+ /* See options.h -- add any more there, too. */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { "command-line", 1, 0, OPT_APPEND },
+ { "append", 1, 0, OPT_APPEND },
+ { "initrd", 1, 0, OPT_RAMDISK },
+ { "ramdisk", 1, 0, OPT_RAMDISK },
+ { "dtb", 1, 0, OPT_DTB },
+ { "atags", 0, 0, OPT_ATAGS },
+ { "image-size", 1, 0, OPT_IMAGE_SIZE },
+ { "page-offset", 1, 0, OPT_PAGE_OFFSET },
+ { 0, 0, 0, 0 },
+ };
+ static const char short_options[] = KEXEC_ARCH_OPT_STR "";
+
+ /*
+ * Parse the command line arguments
+ */
+ command_line = 0;
+ command_line_len = 0;
+ ramdisk = 0;
+ ramdisk_buf = 0;
+ initrd_size = 0;
+ use_atags = 0;
+ dtb_file = NULL;
+ while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch(opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX) {
+ break;
+ }
+ case OPT_APPEND:
+ command_line = optarg;
+ break;
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+ case OPT_DTB:
+ dtb_file = optarg;
+ break;
+ case OPT_ATAGS:
+ use_atags = 1;
+ break;
+ case OPT_IMAGE_SIZE:
+ kexec_arm_image_size = strtoul(optarg, &end, 0);
+ break;
+ case OPT_PAGE_OFFSET:
+ user_page_offset = strtoull(optarg, &end, 0);
+ break;
+ }
+ }
+
+ if (use_atags && dtb_file) {
+ fprintf(stderr, "You can only use ATAGs if you don't specify a "
+ "dtb file.\n");
+ return -1;
+ }
+
+ if (!use_atags && !dtb_file) {
+ int f;
+
+ f = have_sysfs_fdt();
+ if (f)
+ dtb_file = SYSFS_FDT;
+ }
+
+ if (command_line) {
+ command_line_len = strlen(command_line) + 1;
+ if (command_line_len > COMMAND_LINE_SIZE)
+ command_line_len = COMMAND_LINE_SIZE;
+ }
+ if (ramdisk)
+ ramdisk_buf = slurp_file_mmap(ramdisk, &initrd_size);
+
+ if (dtb_file)
+ dtb_buf = slurp_file(dtb_file, &dtb_length);
+
+ if (len > sizeof(struct zimage_header)) {
+ const struct zimage_header *hdr;
+ off_t size;
+
+ hdr = (const struct zimage_header *)buf;
+
+ dbgprintf("zImage header: 0x%08x 0x%08x 0x%08x\n",
+ hdr->magic, hdr->start, hdr->end);
+
+ if (hdr->magic == ZIMAGE_MAGIC) {
+ size = le32_to_cpu(hdr->end) - le32_to_cpu(hdr->start);
+
+ dbgprintf("zImage size 0x%llx, file size 0x%llx\n",
+ (unsigned long long)size,
+ (unsigned long long)len);
+
+ if (size > len) {
+ fprintf(stderr,
+ "zImage is truncated - file 0x%llx vs header 0x%llx\n",
+ (unsigned long long)len,
+ (unsigned long long)size);
+ return -1;
+ }
+ if (size < len)
+ len = size;
+ }
+ }
+
+ /* Handle android images, 2048 is the minimum page size */
+ if (len > 2048 && !strncmp(buf, "ANDROID!", 8)) {
+ const struct android_image *aimg = (const void *)buf;
+ uint32_t page_size = le32_to_cpu(aimg->page_size);
+ uint32_t kernel_size = le32_to_cpu(aimg->kernel_size);
+ uint32_t ramdisk_size = le32_to_cpu(aimg->ramdisk_size);
+ uint32_t stage2_size = le32_to_cpu(aimg->stage2_size);
+ off_t aimg_size = page_size + _ALIGN(kernel_size, page_size) +
+ _ALIGN(ramdisk_size, page_size) + stage2_size;
+
+ if (len < aimg_size) {
+ fprintf(stderr, "Android image size is incorrect\n");
+ return -1;
+ }
+
+ /* Get the kernel */
+ buf = buf + page_size;
+ len = kernel_size;
+
+ /* And the ramdisk if none was given on the command line */
+ if (!ramdisk && ramdisk_size) {
+ initrd_size = ramdisk_size;
+ ramdisk_buf = buf + _ALIGN(kernel_size, page_size);
+ }
+
+ /* Likewise for the command line */
+ if (!command_line && aimg->command_line[0]) {
+ command_line = aimg->command_line;
+ if (command_line[sizeof(aimg->command_line) - 1])
+ command_line_len = sizeof(aimg->command_line);
+ else
+ command_line_len = strlen(command_line) + 1;
+ }
+ }
+
+ /*
+ * Save the length of the compressed kernel image w/o the appended DTB.
+ * This will be required later on when the kernel image contained
+ * in the zImage will be loaded into a kernel memory segment.
+ * And we want to load ONLY the compressed kernel image from the zImage
+ * and discard the appended DTB.
+ */
+ kernel_buf_size = len;
+
+ /*
+ * Always extend the zImage by four bytes to ensure that an appended
+ * DTB image always sees an initialised value after _edata.
+ */
+ kernel_mem_size = len + 4;
+
+ /*
+ * Check for a kernel size extension, and set or validate the
+ * image size. This is the total space needed to avoid the
+ * boot kernel BSS, so other data (such as initrd) does not get
+ * overwritten.
+ */
+ tag = find_extension_tag(buf, len, ZIMAGE_TAG_KRNL_SIZE);
+
+ /*
+ * The zImage length does not include its stack (4k) or its
+ * malloc space (64k). Include this.
+ */
+ len += 0x11000;
+
+ dbgprintf("zImage requires 0x%08llx bytes\n", (unsigned long long)len);
+
+ if (tag) {
+ uint32_t *p = (void *)buf + le32_to_cpu(tag->u.krnl_size.size_ptr);
+ uint32_t edata_size = le32_to_cpu(get_unaligned(p));
+ uint32_t bss_size = le32_to_cpu(tag->u.krnl_size.bss_size);
+ uint32_t kernel_size = edata_size + bss_size;
+
+ dbgprintf("Decompressed kernel sizes:\n");
+ dbgprintf(" text+data 0x%08lx bss 0x%08lx total 0x%08lx\n",
+ (unsigned long)edata_size,
+ (unsigned long)bss_size,
+ (unsigned long)kernel_size);
+
+ /*
+ * While decompressing, the zImage is placed past _edata
+ * of the decompressed kernel. Ensure we account for that.
+ */
+ if (kernel_size < edata_size + len)
+ kernel_size = edata_size + len;
+
+ dbgprintf("Resulting kernel space: 0x%08lx\n",
+ (unsigned long)kernel_size);
+
+ if (kexec_arm_image_size == 0)
+ kexec_arm_image_size = kernel_size;
+ else if (kexec_arm_image_size < kernel_size) {
+ fprintf(stderr,
+ "Kernel size is too small, increasing to 0x%lx\n",
+ (unsigned long)kernel_size);
+ kexec_arm_image_size = kernel_size;
+ }
+ }
+
+ /*
+ * If the user didn't specify the size of the image, and we don't
+ * have the extension tables, assume the maximum kernel compression
+ * ratio is 4. Note that we must include space for the compressed
+ * image here as well.
+ */
+ if (!kexec_arm_image_size)
+ kexec_arm_image_size = len * 5;
+
+ /*
+ * If we are loading a dump capture kernel, we need to update kernel
+ * command line and also add some additional segments.
+ */
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ uint64_t start, end;
+
+ modified_cmdline = xmalloc(COMMAND_LINE_SIZE);
+ memset(modified_cmdline, '\0', COMMAND_LINE_SIZE);
+
+ if (command_line) {
+ (void) strncpy(modified_cmdline, command_line,
+ COMMAND_LINE_SIZE);
+ modified_cmdline[COMMAND_LINE_SIZE - 1] = '\0';
+ }
+
+ if (load_crashdump_segments(info, modified_cmdline) < 0) {
+ free(modified_cmdline);
+ return -1;
+ }
+
+ command_line = modified_cmdline;
+ command_line_len = strlen(command_line) + 1;
+
+ /*
+ * We put the dump capture kernel at the start of crashkernel
+ * reserved memory.
+ */
+ if (parse_iomem_single(CRASH_KERNEL_BOOT, &start, &end) &&
+ parse_iomem_single(CRASH_KERNEL, &start, &end)) {
+ /*
+ * No crash kernel memory reserved. We cannot do more
+ * but just bail out.
+ */
+ return ENOCRASHKERNEL;
+ }
+ base = start;
+ } else {
+ base = locate_hole(info, len + extra_size, 0, 0,
+ ULONG_MAX, INT_MAX);
+ }
+
+ if (base == ULONG_MAX)
+ return -1;
+
+ kernel_base = base + extra_size;
+
+ /*
+ * Calculate the minimum address of the initrd, which must be
+ * above the memory used by the zImage while it runs. This
+ * needs to be page-size aligned.
+ */
+ initrd_base = kernel_base + _ALIGN(kexec_arm_image_size, page_size);
+
+ dbgprintf("%-6s: address=0x%08lx size=0x%08lx\n", "Kernel",
+ (unsigned long)kernel_base,
+ (unsigned long)kexec_arm_image_size);
+
+ if (ramdisk_buf) {
+ /*
+ * Find a hole to place the initrd. The crash kernel use
+ * fixed address, so no check is ok.
+ */
+ if (!(info->kexec_flags & KEXEC_ON_CRASH)) {
+ initrd_base = locate_hole(info, initrd_size, page_size,
+ initrd_base,
+ ULONG_MAX, INT_MAX);
+ if (initrd_base == ULONG_MAX)
+ return -1;
+ }
+
+ dbgprintf("%-6s: address=0x%08lx size=0x%08lx\n", "Initrd",
+ (unsigned long)initrd_base,
+ (unsigned long)initrd_size);
+
+ add_segment(info, ramdisk_buf, initrd_size, initrd_base,
+ initrd_size);
+ }
+
+ if (use_atags) {
+ /*
+ * use ATAGs from /proc/atags
+ */
+ if (atag_arm_load(info, base + atag_offset,
+ command_line, command_line_len,
+ ramdisk_buf) == -1)
+ return -1;
+ } else {
+ /*
+ * Read a user-specified DTB file.
+ */
+ if (dtb_file) {
+ if (fdt_check_header(dtb_buf) != 0) {
+ fprintf(stderr, "Invalid FDT buffer.\n");
+ return -1;
+ }
+
+ if (command_line) {
+ /*
+ * Error should have been reported so
+ * directly return -1
+ */
+ if (setup_dtb_prop(&dtb_buf, &dtb_length, 0, "chosen",
+ "bootargs", command_line,
+ strlen(command_line) + 1))
+ return -1;
+ }
+ } else {
+ /*
+ * Extract the DTB from /proc/device-tree.
+ */
+ create_flatten_tree(&dtb_buf, &dtb_length, command_line);
+ }
+
+ /*
+ * Add the initrd parameters to the dtb
+ */
+ if (ramdisk_buf) {
+ unsigned long start, end;
+
+ start = cpu_to_be32((unsigned long)(initrd_base));
+ end = cpu_to_be32((unsigned long)(initrd_base + initrd_size));
+
+ if (setup_dtb_prop(&dtb_buf, &dtb_length, 0, "chosen",
+ "linux,initrd-start", &start,
+ sizeof(start)))
+ return -1;
+ if (setup_dtb_prop(&dtb_buf, &dtb_length, 0, "chosen",
+ "linux,initrd-end", &end,
+ sizeof(end)))
+ return -1;
+ }
+
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ /* Determine #address-cells and #size-cells */
+ result = get_cells_size(dtb_buf, &address_cells,
+ &size_cells);
+ if (result) {
+ fprintf(stderr, "Cannot determine cells-size.\n");
+ return -1;
+ }
+
+ if (!cells_size_fitted(address_cells, size_cells,
+ &elfcorehdr_mem)) {
+ fprintf(stderr, "elfcorehdr doesn't fit cells-size.\n");
+ return -1;
+ }
+
+ if (!cells_size_fitted(address_cells, size_cells,
+ &crash_kernel_mem)) {
+ fprintf(stderr, "kexec: usable memory range doesn't fit cells-size.\n");
+ return -1;
+ }
+
+ /* Add linux,elfcorehdr */
+ if (setup_dtb_prop_range(&dtb_buf, &dtb_length, 0,
+ "chosen", "linux,elfcorehdr",
+ &elfcorehdr_mem,
+ address_cells, size_cells))
+ return -1;
+
+ /* Add linux,usable-memory-range */
+ if (setup_dtb_prop_range(&dtb_buf, &dtb_length, 0,
+ "chosen",
+ "linux,usable-memory-range",
+ &crash_kernel_mem,
+ address_cells, size_cells))
+ return -1;
+ }
+
+ /*
+ * The dtb must also be placed above the memory used by
+ * the zImage. We don't care about its position wrt the
+ * ramdisk, but we might as well place it after the initrd.
+ * We leave a buffer page between the initrd and the dtb.
+ */
+ dtb_offset = initrd_base + initrd_size + page_size;
+ dtb_offset = _ALIGN_DOWN(dtb_offset, page_size);
+
+ /*
+ * Find a hole to place the dtb above the initrd.
+ * Crash kernel use fixed address, no check is ok.
+ */
+ if (!(info->kexec_flags & KEXEC_ON_CRASH)) {
+ dtb_offset = locate_hole(info, dtb_length, page_size,
+ dtb_offset, ULONG_MAX, INT_MAX);
+ if (dtb_offset == ULONG_MAX)
+ return -1;
+ }
+
+ dbgprintf("%-6s: address=0x%08lx size=0x%08lx\n", "DT",
+ (unsigned long)dtb_offset, (unsigned long)dtb_length);
+
+ add_segment(info, dtb_buf, dtb_length, dtb_offset, dtb_length);
+ }
+
+ add_segment(info, buf, kernel_buf_size, kernel_base, kernel_mem_size);
+
+ info->entry = (void*)kernel_base;
+
+ return 0;
+}
diff --git a/kexec/arch/arm/phys_to_virt.c b/kexec/arch/arm/phys_to_virt.c
new file mode 100644
index 0000000..46a4f68
--- /dev/null
+++ b/kexec/arch/arm/phys_to_virt.c
@@ -0,0 +1,22 @@
+#include "../../kexec.h"
+#include "../../crashdump.h"
+#include "phys_to_virt.h"
+
+uint64_t phys_offset;
+
+/**
+ * phys_to_virt() - translate physical address to virtual address
+ * @paddr: physical address to translate
+ *
+ * For ARM we have following equation to translate from virtual address to
+ * physical:
+ * paddr = vaddr - PAGE_OFFSET + PHYS_OFFSET
+ *
+ * See also:
+ * http://lists.arm.linux.org.uk/lurker/message/20010723.185051.94ce743c.en.html
+ */
+unsigned long
+phys_to_virt(struct crash_elf_info *elf_info, unsigned long long paddr)
+{
+ return paddr + elf_info->page_offset - phys_offset;
+}
diff --git a/kexec/arch/arm/phys_to_virt.h b/kexec/arch/arm/phys_to_virt.h
new file mode 100644
index 0000000..b3147dd
--- /dev/null
+++ b/kexec/arch/arm/phys_to_virt.h
@@ -0,0 +1,8 @@
+#ifndef PHYS_TO_VIRT_H
+#define PHYS_TO_VIRT_H
+
+#include <stdint.h>
+
+extern uint64_t phys_offset;
+
+#endif
diff --git a/kexec/arch/arm64/Makefile b/kexec/arch/arm64/Makefile
new file mode 100644
index 0000000..59212f1
--- /dev/null
+++ b/kexec/arch/arm64/Makefile
@@ -0,0 +1,50 @@
+
+arm64_FS2DT += kexec/fs2dt.c
+arm64_FS2DT_INCLUDE += \
+ -include $(srcdir)/kexec/arch/arm64/crashdump-arm64.h \
+ -include $(srcdir)/kexec/arch/arm64/kexec-arm64.h
+
+arm64_DT_OPS += kexec/dt-ops.c
+
+arm64_MEM_REGIONS = kexec/mem_regions.c
+
+arm64_CPPFLAGS += -I $(srcdir)/kexec/
+
+arm64_KEXEC_SRCS += \
+ kexec/arch/arm64/crashdump-arm64.c \
+ kexec/arch/arm64/kexec-arm64.c \
+ kexec/arch/arm64/kexec-elf-arm64.c \
+ kexec/arch/arm64/kexec-uImage-arm64.c \
+ kexec/arch/arm64/kexec-image-arm64.c \
+ kexec/arch/arm64/kexec-vmlinuz-arm64.c
+
+arm64_UIMAGE = kexec/kexec-uImage.c
+
+arm64_ARCH_REUSE_INITRD =
+arm64_ADD_SEGMENT =
+arm64_VIRT_TO_PHYS =
+arm64_PHYS_TO_VIRT =
+
+dist += $(arm64_KEXEC_SRCS) \
+ kexec/arch/arm64/include/arch/options.h \
+ kexec/arch/arm64/crashdump-arm64.h \
+ kexec/arch/arm64/image-header.h \
+ kexec/arch/arm64/iomem.h \
+ kexec/arch/arm64/kexec-arm64.h \
+ kexec/arch/arm64/Makefile
+
+ifdef HAVE_LIBFDT
+
+LIBS += -lfdt
+
+else
+
+include $(srcdir)/kexec/libfdt/Makefile.libfdt
+
+libfdt_SRCS += $(LIBFDT_SRCS:%=kexec/libfdt/%)
+
+arm64_CPPFLAGS += -I$(srcdir)/kexec/libfdt
+
+arm64_KEXEC_SRCS += $(libfdt_SRCS)
+
+endif
diff --git a/kexec/arch/arm64/crashdump-arm64.c b/kexec/arch/arm64/crashdump-arm64.c
new file mode 100644
index 0000000..3098315
--- /dev/null
+++ b/kexec/arch/arm64/crashdump-arm64.c
@@ -0,0 +1,248 @@
+/*
+ * ARM64 crashdump.
+ * partly derived from arm implementation
+ *
+ * Copyright (c) 2014-2017 Linaro Limited
+ * Author: AKASHI Takahiro <takahiro.akashi@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#define _GNU_SOURCE
+
+#include <errno.h>
+#include <linux/elf.h>
+
+#include "kexec.h"
+#include "crashdump.h"
+#include "crashdump-arm64.h"
+#include "iomem.h"
+#include "kexec-arm64.h"
+#include "kexec-elf.h"
+#include "mem_regions.h"
+
+/* memory ranges of crashed kernel */
+static struct memory_ranges system_memory_rgns;
+
+/* memory range reserved for crashkernel */
+struct memory_range crash_reserved_mem[CRASH_MAX_RESERVED_RANGES];
+struct memory_ranges usablemem_rgns = {
+ .size = 0,
+ .max_size = CRASH_MAX_RESERVED_RANGES,
+ .ranges = crash_reserved_mem,
+};
+
+struct memory_range elfcorehdr_mem;
+
+static struct crash_elf_info elf_info = {
+ .class = ELFCLASS64,
+#if (__BYTE_ORDER == __LITTLE_ENDIAN)
+ .data = ELFDATA2LSB,
+#else
+ .data = ELFDATA2MSB,
+#endif
+ .machine = EM_AARCH64,
+};
+
+/*
+ * iomem_range_callback() - callback called for each iomem region
+ * @data: not used
+ * @nr: not used
+ * @str: name of the memory region
+ * @base: start address of the memory region
+ * @length: size of the memory region
+ *
+ * This function is called once for each memory region found in /proc/iomem.
+ * It locates system RAM and crashkernel reserved memory and places these to
+ * variables, respectively, system_memory_rgns and usablemem_rgns.
+ */
+
+static int iomem_range_callback(void *UNUSED(data), int UNUSED(nr),
+ char *str, unsigned long long base,
+ unsigned long long length)
+{
+ if (strncmp(str, CRASH_KERNEL, strlen(CRASH_KERNEL)) == 0)
+ return mem_regions_alloc_and_add(&usablemem_rgns,
+ base, length, RANGE_RAM);
+ else if (strncmp(str, SYSTEM_RAM, strlen(SYSTEM_RAM)) == 0)
+ return mem_regions_alloc_and_add(&system_memory_rgns,
+ base, length, RANGE_RAM);
+ else if (strncmp(str, KERNEL_CODE, strlen(KERNEL_CODE)) == 0) {
+
+ unsigned long long kva_text = get_kernel_sym("_text");
+ unsigned long long kva_stext = get_kernel_sym("_stext");
+ unsigned long long kva_text_end = get_kernel_sym("__init_begin");
+
+ /*
+ * old: kernel_code.start = __pa_symbol(_text);
+ * new: kernel_code.start = __pa_symbol(_stext);
+ *
+ * For compatibility, deduce by comparing the gap "__init_begin - _stext"
+ * and the res size of "Kernel code" in /proc/iomem
+ */
+ if (kva_text_end - kva_stext == length)
+ elf_info.kern_paddr_start = base - (kva_stext - kva_text);
+ else
+ elf_info.kern_paddr_start = base;
+ }
+ else if (strncmp(str, KERNEL_DATA, strlen(KERNEL_DATA)) == 0)
+ elf_info.kern_size = base + length - elf_info.kern_paddr_start;
+
+ return 0;
+}
+
+int is_crashkernel_mem_reserved(void)
+{
+ if (!usablemem_rgns.size)
+ kexec_iomem_for_each_line(NULL, iomem_range_callback, NULL);
+
+ return usablemem_rgns.size;
+}
+
+/*
+ * crash_get_memory_ranges() - read system physical memory
+ *
+ * Function reads through system physical memory and stores found memory
+ * regions in system_memory_ranges.
+ * Regions are sorted in ascending order.
+ *
+ * Returns 0 in case of success and a negative value otherwise.
+ */
+static int crash_get_memory_ranges(void)
+{
+ int i;
+
+ /*
+ * First read all memory regions that can be considered as
+ * system memory including the crash area.
+ */
+ if (!usablemem_rgns.size)
+ kexec_iomem_for_each_line(NULL, iomem_range_callback, NULL);
+
+ /* allow one or two regions for crash dump kernel */
+ if (!usablemem_rgns.size)
+ return -EINVAL;
+
+ dbgprint_mem_range("Reserved memory range",
+ usablemem_rgns.ranges, usablemem_rgns.size);
+
+ for (i = 0; i < usablemem_rgns.size; i++) {
+ if (mem_regions_alloc_and_exclude(&system_memory_rgns,
+ &crash_reserved_mem[i])) {
+ fprintf(stderr, "Cannot allocate memory for ranges\n");
+ return -ENOMEM;
+ }
+ }
+
+ /*
+ * Make sure that the memory regions are sorted.
+ */
+ mem_regions_sort(&system_memory_rgns);
+
+ dbgprint_mem_range("Coredump memory ranges",
+ system_memory_rgns.ranges, system_memory_rgns.size);
+
+ /*
+ * For additional kernel code/data segment.
+ * kern_paddr_start/kern_size are determined in iomem_range_callback
+ */
+ elf_info.kern_vaddr_start = get_kernel_sym("_text");
+ if (!elf_info.kern_vaddr_start)
+ elf_info.kern_vaddr_start = UINT64_MAX;
+
+ return 0;
+}
+
+/*
+ * load_crashdump_segments() - load the elf core header
+ * @info: kexec info structure
+ *
+ * This function creates and loads an additional segment of elf core header
+ : which is used to construct /proc/vmcore on crash dump kernel.
+ *
+ * Return 0 in case of success and -1 in case of error.
+ */
+
+int load_crashdump_segments(struct kexec_info *info)
+{
+ unsigned long elfcorehdr;
+ unsigned long bufsz;
+ void *buf;
+ int err;
+
+ /*
+ * First fetch all the memory (RAM) ranges that we are going to
+ * pass to the crash dump kernel during panic.
+ */
+
+ err = crash_get_memory_ranges();
+
+ if (err)
+ return EFAILED;
+
+ get_page_offset((unsigned long *)&elf_info.page_offset);
+ dbgprintf("%s: page_offset: %016llx\n", __func__,
+ elf_info.page_offset);
+
+ err = crash_create_elf64_headers(info, &elf_info,
+ system_memory_rgns.ranges, system_memory_rgns.size,
+ &buf, &bufsz, ELF_CORE_HEADER_ALIGN);
+
+ if (err)
+ return EFAILED;
+
+ elfcorehdr = add_buffer_phys_virt(info, buf, bufsz, bufsz, 0,
+ crash_reserved_mem[usablemem_rgns.size - 1].start,
+ crash_reserved_mem[usablemem_rgns.size - 1].end,
+ -1, 0);
+
+ elfcorehdr_mem.start = elfcorehdr;
+ elfcorehdr_mem.end = elfcorehdr + bufsz - 1;
+
+ dbgprintf("%s: elfcorehdr 0x%llx-0x%llx\n", __func__,
+ elfcorehdr_mem.start, elfcorehdr_mem.end);
+
+ return 0;
+}
+
+/*
+ * e_entry and p_paddr are actually in virtual address space.
+ * Those values will be translated to physcal addresses by using
+ * virt_to_phys() in add_segment().
+ * So let's fix up those values for later use so the memory base
+ * (arm64_mm.phys_offset) will be correctly replaced with
+ * crash_reserved_mem[usablemem_rgns.size - 1].start.
+ */
+void fixup_elf_addrs(struct mem_ehdr *ehdr)
+{
+ struct mem_phdr *phdr;
+ int i;
+
+ ehdr->e_entry += -arm64_mem.phys_offset +
+ crash_reserved_mem[usablemem_rgns.size - 1].start;
+
+ for (i = 0; i < ehdr->e_phnum; i++) {
+ phdr = &ehdr->e_phdr[i];
+ if (phdr->p_type != PT_LOAD)
+ continue;
+ phdr->p_paddr +=
+ (-arm64_mem.phys_offset +
+ crash_reserved_mem[usablemem_rgns.size - 1].start);
+ }
+}
+
+int get_crash_kernel_load_range(uint64_t *start, uint64_t *end)
+{
+ if (!usablemem_rgns.size)
+ kexec_iomem_for_each_line(NULL, iomem_range_callback, NULL);
+
+ if (!usablemem_rgns.size)
+ return -1;
+
+ *start = crash_reserved_mem[usablemem_rgns.size - 1].start;
+ *end = crash_reserved_mem[usablemem_rgns.size - 1].end;
+
+ return 0;
+}
diff --git a/kexec/arch/arm64/crashdump-arm64.h b/kexec/arch/arm64/crashdump-arm64.h
new file mode 100644
index 0000000..82fa69b
--- /dev/null
+++ b/kexec/arch/arm64/crashdump-arm64.h
@@ -0,0 +1,29 @@
+/*
+ * ARM64 crashdump.
+ *
+ * Copyright (c) 2014-2017 Linaro Limited
+ * Author: AKASHI Takahiro <takahiro.akashi@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef CRASHDUMP_ARM64_H
+#define CRASHDUMP_ARM64_H
+
+#include "kexec.h"
+
+#define CRASH_MAX_MEMORY_RANGES 32768
+
+/* crash dump kernel support at most two regions, low_region and high region. */
+#define CRASH_MAX_RESERVED_RANGES 2
+
+extern struct memory_ranges usablemem_rgns;
+extern struct memory_range crash_reserved_mem[];
+extern struct memory_range elfcorehdr_mem;
+
+extern int load_crashdump_segments(struct kexec_info *info);
+extern void fixup_elf_addrs(struct mem_ehdr *ehdr);
+
+#endif /* CRASHDUMP_ARM64_H */
diff --git a/kexec/arch/arm64/image-header.h b/kexec/arch/arm64/image-header.h
new file mode 100644
index 0000000..26bb02f
--- /dev/null
+++ b/kexec/arch/arm64/image-header.h
@@ -0,0 +1,147 @@
+/*
+ * ARM64 binary image header.
+ */
+
+#if !defined(__ARM64_IMAGE_HEADER_H)
+#define __ARM64_IMAGE_HEADER_H
+
+#include <endian.h>
+#include <stdint.h>
+
+/**
+ * struct arm64_image_header - arm64 kernel image header.
+ *
+ * @pe_sig: Optional PE format 'MZ' signature.
+ * @branch_code: Reserved for instructions to branch to stext.
+ * @text_offset: The image load offset in LSB byte order.
+ * @image_size: An estimated size of the memory image size in LSB byte order.
+ * @flags: Bit flags in LSB byte order:
+ * Bit 0: Image byte order: 1=MSB.
+ * Bit 1-2: Kernel page size: 1=4K, 2=16K, 3=64K.
+ * Bit 3: Image placement: 0=low.
+ * @reserved_1: Reserved.
+ * @magic: Magic number, "ARM\x64".
+ * @pe_header: Optional offset to a PE format header.
+ **/
+
+struct arm64_image_header {
+ uint8_t pe_sig[2];
+ uint16_t branch_code[3];
+ uint64_t text_offset;
+ uint64_t image_size;
+ uint64_t flags;
+ uint64_t reserved_1[3];
+ uint8_t magic[4];
+ uint32_t pe_header;
+};
+
+static const uint8_t arm64_image_magic[4] = {'A', 'R', 'M', 0x64U};
+static const uint8_t arm64_image_pe_sig[2] = {'M', 'Z'};
+static const uint8_t arm64_pe_machtype[6] = {'P','E', 0x0, 0x0, 0x64, 0xAA};
+static const uint64_t arm64_image_flag_be = (1UL << 0);
+static const uint64_t arm64_image_flag_page_size = (3UL << 1);
+static const uint64_t arm64_image_flag_placement = (1UL << 3);
+
+/**
+ * enum arm64_header_page_size
+ */
+
+enum arm64_header_page_size {
+ arm64_header_page_size_invalid = 0,
+ arm64_header_page_size_4k,
+ arm64_header_page_size_16k,
+ arm64_header_page_size_64k
+};
+
+/**
+ * arm64_header_check_magic - Helper to check the arm64 image header.
+ *
+ * Returns non-zero if header is OK.
+ */
+
+static inline int arm64_header_check_magic(const struct arm64_image_header *h)
+{
+ if (!h)
+ return 0;
+
+ return (h->magic[0] == arm64_image_magic[0]
+ && h->magic[1] == arm64_image_magic[1]
+ && h->magic[2] == arm64_image_magic[2]
+ && h->magic[3] == arm64_image_magic[3]);
+}
+
+/**
+ * arm64_header_check_pe_sig - Helper to check the arm64 image header.
+ *
+ * Returns non-zero if 'MZ' signature is found.
+ */
+
+static inline int arm64_header_check_pe_sig(const struct arm64_image_header *h)
+{
+ if (!h)
+ return 0;
+
+ return (h->pe_sig[0] == arm64_image_pe_sig[0]
+ && h->pe_sig[1] == arm64_image_pe_sig[1]);
+}
+
+/**
+ * arm64_header_check_msb - Helper to check the arm64 image header.
+ *
+ * Returns non-zero if the image was built as big endian.
+ */
+
+static inline int arm64_header_check_msb(const struct arm64_image_header *h)
+{
+ if (!h)
+ return 0;
+
+ return (le64toh(h->flags) & arm64_image_flag_be) >> 0;
+}
+
+/**
+ * arm64_header_page_size
+ */
+
+static inline enum arm64_header_page_size arm64_header_page_size(
+ const struct arm64_image_header *h)
+{
+ if (!h)
+ return 0;
+
+ return (le64toh(h->flags) & arm64_image_flag_page_size) >> 1;
+}
+
+/**
+ * arm64_header_placement
+ *
+ * Returns non-zero if the image has no physical placement restrictions.
+ */
+
+static inline int arm64_header_placement(const struct arm64_image_header *h)
+{
+ if (!h)
+ return 0;
+
+ return (le64toh(h->flags) & arm64_image_flag_placement) >> 3;
+}
+
+static inline uint64_t arm64_header_text_offset(
+ const struct arm64_image_header *h)
+{
+ if (!h)
+ return 0;
+
+ return le64toh(h->text_offset);
+}
+
+static inline uint64_t arm64_header_image_size(
+ const struct arm64_image_header *h)
+{
+ if (!h)
+ return 0;
+
+ return le64toh(h->image_size);
+}
+
+#endif
diff --git a/kexec/arch/arm64/include/arch/options.h b/kexec/arch/arm64/include/arch/options.h
new file mode 100644
index 0000000..8c695f3
--- /dev/null
+++ b/kexec/arch/arm64/include/arch/options.h
@@ -0,0 +1,43 @@
+#if !defined(KEXEC_ARCH_ARM64_OPTIONS_H)
+#define KEXEC_ARCH_ARM64_OPTIONS_H
+
+#define OPT_APPEND ((OPT_MAX)+0)
+#define OPT_DTB ((OPT_MAX)+1)
+#define OPT_INITRD ((OPT_MAX)+2)
+#define OPT_REUSE_CMDLINE ((OPT_MAX)+3)
+#define OPT_SERIAL ((OPT_MAX)+4)
+#define OPT_ARCH_MAX ((OPT_MAX)+5)
+
+#define KEXEC_ARCH_OPTIONS \
+ KEXEC_OPTIONS \
+ { "append", 1, NULL, OPT_APPEND }, \
+ { "command-line", 1, NULL, OPT_APPEND }, \
+ { "dtb", 1, NULL, OPT_DTB }, \
+ { "initrd", 1, NULL, OPT_INITRD }, \
+ { "serial", 1, NULL, OPT_SERIAL }, \
+ { "ramdisk", 1, NULL, OPT_INITRD }, \
+ { "reuse-cmdline", 0, NULL, OPT_REUSE_CMDLINE }, \
+
+#define KEXEC_ARCH_OPT_STR KEXEC_OPT_STR /* Only accept long arch options. */
+#define KEXEC_ALL_OPTIONS KEXEC_ARCH_OPTIONS
+#define KEXEC_ALL_OPT_STR KEXEC_ARCH_OPT_STR
+
+static const char arm64_opts_usage[] __attribute__ ((unused)) =
+" --append=STRING Set the kernel command line to STRING.\n"
+" --command-line=STRING Set the kernel command line to STRING.\n"
+" --dtb=FILE Use FILE as the device tree blob.\n"
+" --initrd=FILE Use FILE as the kernel initial ramdisk.\n"
+" --serial=STRING Name of console used for purgatory printing. (e.g. ttyAMA0)\n"
+" --ramdisk=FILE Use FILE as the kernel initial ramdisk.\n"
+" --reuse-cmdline Use kernel command line from running system.\n";
+
+struct arm64_opts {
+ const char *command_line;
+ const char *dtb;
+ const char *initrd;
+ const char *console;
+};
+
+extern struct arm64_opts arm64_opts;
+
+#endif
diff --git a/kexec/arch/arm64/iomem.h b/kexec/arch/arm64/iomem.h
new file mode 100644
index 0000000..d4864bb
--- /dev/null
+++ b/kexec/arch/arm64/iomem.h
@@ -0,0 +1,10 @@
+#ifndef IOMEM_H
+#define IOMEM_H
+
+#define SYSTEM_RAM "System RAM\n"
+#define KERNEL_CODE "Kernel code\n"
+#define KERNEL_DATA "Kernel data\n"
+#define CRASH_KERNEL "Crash kernel\n"
+#define IOMEM_RESERVED "reserved\n"
+
+#endif
diff --git a/kexec/arch/arm64/kexec-arm64.c b/kexec/arch/arm64/kexec-arm64.c
new file mode 100644
index 0000000..4a67b0d
--- /dev/null
+++ b/kexec/arch/arm64/kexec-arm64.c
@@ -0,0 +1,1365 @@
+/*
+ * ARM64 kexec.
+ */
+
+#define _GNU_SOURCE
+
+#include <assert.h>
+#include <errno.h>
+#include <getopt.h>
+#include <inttypes.h>
+#include <libfdt.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <linux/elf-em.h>
+#include <elf.h>
+#include <elf_info.h>
+
+#include <unistd.h>
+#include <syscall.h>
+#include <errno.h>
+#include <linux/random.h>
+
+#include "kexec.h"
+#include "kexec-arm64.h"
+#include "crashdump.h"
+#include "crashdump-arm64.h"
+#include "dt-ops.h"
+#include "fs2dt.h"
+#include "iomem.h"
+#include "kexec-syscall.h"
+#include "mem_regions.h"
+#include "arch/options.h"
+
+#define ROOT_NODE_ADDR_CELLS_DEFAULT 1
+#define ROOT_NODE_SIZE_CELLS_DEFAULT 1
+
+#define PROP_ADDR_CELLS "#address-cells"
+#define PROP_SIZE_CELLS "#size-cells"
+#define PROP_ELFCOREHDR "linux,elfcorehdr"
+#define PROP_USABLE_MEM_RANGE "linux,usable-memory-range"
+
+#define PAGE_OFFSET_36 ((0xffffffffffffffffUL) << 36)
+#define PAGE_OFFSET_39 ((0xffffffffffffffffUL) << 39)
+#define PAGE_OFFSET_42 ((0xffffffffffffffffUL) << 42)
+#define PAGE_OFFSET_47 ((0xffffffffffffffffUL) << 47)
+#define PAGE_OFFSET_48 ((0xffffffffffffffffUL) << 48)
+
+/* Global flag which indicates that we have tried reading
+ * PHYS_OFFSET from 'kcore' already.
+ */
+static bool try_read_phys_offset_from_kcore = false;
+
+/* Machine specific details. */
+static int va_bits = -1;
+static unsigned long page_offset;
+
+/* Global varables the core kexec routines expect. */
+
+unsigned char reuse_initrd;
+
+off_t initrd_base;
+off_t initrd_size;
+
+const struct arch_map_entry arches[] = {
+ { "aarch64", KEXEC_ARCH_ARM64 },
+ { "aarch64_be", KEXEC_ARCH_ARM64 },
+ { NULL, 0 },
+};
+
+struct file_type file_type[] = {
+ {"vmlinux", elf_arm64_probe, elf_arm64_load, elf_arm64_usage},
+ {"Image", image_arm64_probe, image_arm64_load, image_arm64_usage},
+ {"uImage", uImage_arm64_probe, uImage_arm64_load, uImage_arm64_usage},
+ {"vmlinuz", pez_arm64_probe, pez_arm64_load, pez_arm64_usage},
+};
+
+int file_types = sizeof(file_type) / sizeof(file_type[0]);
+
+/* arm64 global varables. */
+
+struct arm64_opts arm64_opts;
+struct arm64_mem arm64_mem = {
+ .phys_offset = arm64_mem_ngv,
+ .vp_offset = arm64_mem_ngv,
+};
+
+uint64_t get_phys_offset(void)
+{
+ assert(arm64_mem.phys_offset != arm64_mem_ngv);
+ return arm64_mem.phys_offset;
+}
+
+uint64_t get_vp_offset(void)
+{
+ assert(arm64_mem.vp_offset != arm64_mem_ngv);
+ return arm64_mem.vp_offset;
+}
+
+/**
+ * arm64_process_image_header - Process the arm64 image header.
+ *
+ * Make a guess that KERNEL_IMAGE_SIZE will be enough for older kernels.
+ */
+
+int arm64_process_image_header(const struct arm64_image_header *h)
+{
+#if !defined(KERNEL_IMAGE_SIZE)
+# define KERNEL_IMAGE_SIZE MiB(16)
+#endif
+
+ if (!arm64_header_check_magic(h))
+ return EFAILED;
+
+ if (h->image_size) {
+ arm64_mem.text_offset = arm64_header_text_offset(h);
+ arm64_mem.image_size = arm64_header_image_size(h);
+ } else {
+ /* For 3.16 and older kernels. */
+ arm64_mem.text_offset = 0x80000;
+ arm64_mem.image_size = KERNEL_IMAGE_SIZE;
+ fprintf(stderr,
+ "kexec: %s: Warning: Kernel image size set to %lu MiB.\n"
+ " Please verify compatability with lodaed kernel.\n",
+ __func__, KERNEL_IMAGE_SIZE / 1024UL / 1024UL);
+ }
+
+ return 0;
+}
+
+void arch_usage(void)
+{
+ printf(arm64_opts_usage);
+}
+
+int arch_process_options(int argc, char **argv)
+{
+ static const char short_options[] = KEXEC_OPT_STR "";
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { 0 }
+ };
+ int opt;
+ char *cmdline = NULL;
+ const char *append = NULL;
+ int do_kexec_file_syscall = 0;
+
+ for (opt = 0; opt != -1; ) {
+ opt = getopt_long(argc, argv, short_options, options, 0);
+
+ switch (opt) {
+ case OPT_APPEND:
+ append = optarg;
+ break;
+ case OPT_REUSE_CMDLINE:
+ cmdline = get_command_line();
+ break;
+ case OPT_DTB:
+ arm64_opts.dtb = optarg;
+ break;
+ case OPT_INITRD:
+ arm64_opts.initrd = optarg;
+ break;
+ case OPT_KEXEC_FILE_SYSCALL:
+ do_kexec_file_syscall = 1;
+ case OPT_SERIAL:
+ arm64_opts.console = optarg;
+ break;
+ default:
+ break; /* Ignore core and unknown options. */
+ }
+ }
+
+ arm64_opts.command_line = concat_cmdline(cmdline, append);
+
+ dbgprintf("%s:%d: command_line: %s\n", __func__, __LINE__,
+ arm64_opts.command_line);
+ dbgprintf("%s:%d: initrd: %s\n", __func__, __LINE__,
+ arm64_opts.initrd);
+ dbgprintf("%s:%d: dtb: %s\n", __func__, __LINE__,
+ (do_kexec_file_syscall && arm64_opts.dtb ? "(ignored)" :
+ arm64_opts.dtb));
+ dbgprintf("%s:%d: console: %s\n", __func__, __LINE__,
+ arm64_opts.console);
+
+ if (do_kexec_file_syscall)
+ arm64_opts.dtb = NULL;
+
+ return 0;
+}
+
+/**
+ * find_purgatory_sink - Find a sink for purgatory output.
+ */
+
+static uint64_t find_purgatory_sink(const char *console)
+{
+ int fd, ret;
+ char device[255], mem[255];
+ struct stat sb;
+ char buffer[10];
+ uint64_t iomem = 0x0;
+
+ if (!console)
+ return 0;
+
+ ret = snprintf(device, sizeof(device), "/sys/class/tty/%s", console);
+ if (ret < 0 || ret >= sizeof(device)) {
+ fprintf(stderr, "snprintf failed: %s\n", strerror(errno));
+ return 0;
+ }
+
+ if (stat(device, &sb) || !S_ISDIR(sb.st_mode)) {
+ fprintf(stderr, "kexec: %s: No valid console found for %s\n",
+ __func__, device);
+ return 0;
+ }
+
+ ret = snprintf(mem, sizeof(mem), "%s%s", device, "/iomem_base");
+ if (ret < 0 || ret >= sizeof(mem)) {
+ fprintf(stderr, "snprintf failed: %s\n", strerror(errno));
+ return 0;
+ }
+
+ printf("console memory read from %s\n", mem);
+
+ fd = open(mem, O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr, "kexec: %s: No able to open %s\n",
+ __func__, mem);
+ return 0;
+ }
+
+ memset(buffer, '\0', sizeof(buffer));
+ ret = read(fd, buffer, sizeof(buffer));
+ if (ret < 0) {
+ fprintf(stderr, "kexec: %s: not able to read fd\n", __func__);
+ close(fd);
+ return 0;
+ }
+
+ sscanf(buffer, "%lx", &iomem);
+ printf("console memory is at %#lx\n", iomem);
+
+ close(fd);
+ return iomem;
+}
+
+/**
+ * struct dtb - Info about a binary device tree.
+ *
+ * @buf: Device tree data.
+ * @size: Device tree data size.
+ * @name: Shorthand name of this dtb for messages.
+ * @path: Filesystem path.
+ */
+
+struct dtb {
+ char *buf;
+ off_t size;
+ const char *name;
+ const char *path;
+};
+
+/**
+ * dump_reservemap - Dump the dtb's reservemap.
+ */
+
+static void dump_reservemap(const struct dtb *dtb)
+{
+ int i;
+
+ for (i = 0; ; i++) {
+ uint64_t address;
+ uint64_t size;
+
+ fdt_get_mem_rsv(dtb->buf, i, &address, &size);
+
+ if (!size)
+ break;
+
+ dbgprintf("%s: %s {%" PRIx64 ", %" PRIx64 "}\n", __func__,
+ dtb->name, address, size);
+ }
+}
+
+/**
+ * set_bootargs - Set the dtb's bootargs.
+ */
+
+static int set_bootargs(struct dtb *dtb, const char *command_line)
+{
+ int result;
+
+ if (!command_line || !command_line[0])
+ return 0;
+
+ result = dtb_set_bootargs(&dtb->buf, &dtb->size, command_line);
+
+ if (result) {
+ fprintf(stderr,
+ "kexec: Set device tree bootargs failed.\n");
+ return EFAILED;
+ }
+
+ return 0;
+}
+
+/**
+ * read_proc_dtb - Read /proc/device-tree.
+ */
+
+static int read_proc_dtb(struct dtb *dtb)
+{
+ int result;
+ struct stat s;
+ static const char path[] = "/proc/device-tree";
+
+ result = stat(path, &s);
+
+ if (result) {
+ dbgprintf("%s: %s\n", __func__, strerror(errno));
+ return EFAILED;
+ }
+
+ dtb->path = path;
+ create_flatten_tree((char **)&dtb->buf, &dtb->size, NULL);
+
+ return 0;
+}
+
+/**
+ * read_sys_dtb - Read /sys/firmware/fdt.
+ */
+
+static int read_sys_dtb(struct dtb *dtb)
+{
+ int result;
+ struct stat s;
+ static const char path[] = "/sys/firmware/fdt";
+
+ result = stat(path, &s);
+
+ if (result) {
+ dbgprintf("%s: %s\n", __func__, strerror(errno));
+ return EFAILED;
+ }
+
+ dtb->path = path;
+ dtb->buf = slurp_file(path, &dtb->size);
+
+ return 0;
+}
+
+/**
+ * read_1st_dtb - Read the 1st stage kernel's dtb.
+ */
+
+static int read_1st_dtb(struct dtb *dtb)
+{
+ int result;
+
+ dtb->name = "dtb_sys";
+ result = read_sys_dtb(dtb);
+
+ if (!result)
+ goto on_success;
+
+ dtb->name = "dtb_proc";
+ result = read_proc_dtb(dtb);
+
+ if (!result)
+ goto on_success;
+
+ dbgprintf("%s: not found\n", __func__);
+ return EFAILED;
+
+on_success:
+ dbgprintf("%s: found %s\n", __func__, dtb->path);
+ return 0;
+}
+
+static int get_cells_size(void *fdt, uint32_t *address_cells,
+ uint32_t *size_cells)
+{
+ int nodeoffset;
+ const uint32_t *prop = NULL;
+ int prop_len;
+
+ /* default values */
+ *address_cells = ROOT_NODE_ADDR_CELLS_DEFAULT;
+ *size_cells = ROOT_NODE_SIZE_CELLS_DEFAULT;
+
+ /* under root node */
+ nodeoffset = fdt_path_offset(fdt, "/");
+ if (nodeoffset < 0)
+ goto on_error;
+
+ prop = fdt_getprop(fdt, nodeoffset, PROP_ADDR_CELLS, &prop_len);
+ if (prop) {
+ if (prop_len == sizeof(*prop))
+ *address_cells = fdt32_to_cpu(*prop);
+ else
+ goto on_error;
+ }
+
+ prop = fdt_getprop(fdt, nodeoffset, PROP_SIZE_CELLS, &prop_len);
+ if (prop) {
+ if (prop_len == sizeof(*prop))
+ *size_cells = fdt32_to_cpu(*prop);
+ else
+ goto on_error;
+ }
+
+ dbgprintf("%s: #address-cells:%d #size-cells:%d\n", __func__,
+ *address_cells, *size_cells);
+ return 0;
+
+on_error:
+ return EFAILED;
+}
+
+static bool cells_size_fitted(uint32_t address_cells, uint32_t size_cells,
+ struct memory_range *range)
+{
+ dbgprintf("%s: %llx-%llx\n", __func__, range->start, range->end);
+
+ /* if *_cells >= 2, cells can hold 64-bit values anyway */
+ if ((address_cells == 1) && (range->start >= (1ULL << 32)))
+ return false;
+
+ if ((size_cells == 1) &&
+ ((range->end - range->start + 1) >= (1ULL << 32)))
+ return false;
+
+ return true;
+}
+
+static void fill_property(void *buf, uint64_t val, uint32_t cells)
+{
+ uint32_t val32;
+ int i;
+
+ if (cells == 1) {
+ val32 = cpu_to_fdt32((uint32_t)val);
+ memcpy(buf, &val32, sizeof(uint32_t));
+ } else {
+ for (i = 0;
+ i < (cells * sizeof(uint32_t) - sizeof(uint64_t)); i++)
+ *(char *)buf++ = 0;
+
+ val = cpu_to_fdt64(val);
+ memcpy(buf, &val, sizeof(uint64_t));
+ }
+}
+
+static int fdt_setprop_ranges(void *fdt, int nodeoffset, const char *name,
+ struct memory_range *ranges, int nr_ranges, bool reverse,
+ uint32_t address_cells, uint32_t size_cells)
+{
+ void *buf, *prop;
+ size_t buf_size;
+ int i, result;
+ struct memory_range *range;
+
+ buf_size = (address_cells + size_cells) * sizeof(uint32_t) * nr_ranges;
+ prop = buf = xmalloc(buf_size);
+ if (!buf)
+ return -ENOMEM;
+
+ for (i = 0; i < nr_ranges; i++) {
+ if (reverse)
+ range = ranges + (nr_ranges - 1 - i);
+ else
+ range = ranges + i;
+
+ fill_property(prop, range->start, address_cells);
+ prop += address_cells * sizeof(uint32_t);
+
+ fill_property(prop, range->end - range->start + 1, size_cells);
+ prop += size_cells * sizeof(uint32_t);
+ }
+
+ result = fdt_setprop(fdt, nodeoffset, name, buf, buf_size);
+
+ free(buf);
+
+ return result;
+}
+
+/**
+ * setup_2nd_dtb - Setup the 2nd stage kernel's dtb.
+ */
+
+static int setup_2nd_dtb(struct dtb *dtb, char *command_line, int on_crash)
+{
+ uint32_t address_cells, size_cells;
+ uint64_t fdt_val64;
+ uint64_t *prop;
+ char *new_buf = NULL;
+ int len, range_len;
+ int nodeoffset;
+ int new_size;
+ int i, result, kaslr_seed;
+
+ result = fdt_check_header(dtb->buf);
+
+ if (result) {
+ fprintf(stderr, "kexec: Invalid 2nd device tree.\n");
+ return EFAILED;
+ }
+
+ result = set_bootargs(dtb, command_line);
+ if (result) {
+ fprintf(stderr, "kexec: cannot set bootargs.\n");
+ result = -EINVAL;
+ goto on_error;
+ }
+
+ /* determine #address-cells and #size-cells */
+ result = get_cells_size(dtb->buf, &address_cells, &size_cells);
+ if (result) {
+ fprintf(stderr, "kexec: cannot determine cells-size.\n");
+ result = -EINVAL;
+ goto on_error;
+ }
+
+ if (!cells_size_fitted(address_cells, size_cells,
+ &elfcorehdr_mem)) {
+ fprintf(stderr, "kexec: elfcorehdr doesn't fit cells-size.\n");
+ result = -EINVAL;
+ goto on_error;
+ }
+
+ for (i = 0; i < usablemem_rgns.size; i++) {
+ if (!cells_size_fitted(address_cells, size_cells,
+ &crash_reserved_mem[i])) {
+ fprintf(stderr, "kexec: usable memory range doesn't fit cells-size.\n");
+ result = -EINVAL;
+ goto on_error;
+ }
+ }
+
+ /* duplicate dt blob */
+ range_len = sizeof(uint32_t) * (address_cells + size_cells);
+ new_size = fdt_totalsize(dtb->buf)
+ + fdt_prop_len(PROP_ELFCOREHDR, range_len)
+ + fdt_prop_len(PROP_USABLE_MEM_RANGE, range_len * usablemem_rgns.size);
+
+ new_buf = xmalloc(new_size);
+ result = fdt_open_into(dtb->buf, new_buf, new_size);
+ if (result) {
+ dbgprintf("%s: fdt_open_into failed: %s\n", __func__,
+ fdt_strerror(result));
+ result = -ENOSPC;
+ goto on_error;
+ }
+
+ /* fixup 'kaslr-seed' with a random value, if supported */
+ nodeoffset = fdt_path_offset(new_buf, "/chosen");
+ prop = fdt_getprop_w(new_buf, nodeoffset,
+ "kaslr-seed", &len);
+ if (!prop || len != sizeof(uint64_t)) {
+ dbgprintf("%s: no kaslr-seed found\n",
+ __func__);
+ /* for kexec warm reboot case, we don't need to fixup
+ * other dtb properties
+ */
+ if (!on_crash) {
+ dump_reservemap(dtb);
+ if (new_buf)
+ free(new_buf);
+
+ return result;
+ }
+ } else {
+ kaslr_seed = fdt64_to_cpu(*prop);
+
+ /* kaslr_seed must be wiped clean by primary
+ * kernel during boot
+ */
+ if (kaslr_seed != 0) {
+ dbgprintf("%s: kaslr-seed is not wiped to 0.\n",
+ __func__);
+ result = -EINVAL;
+ goto on_error;
+ }
+
+ /*
+ * Invoke the getrandom system call with
+ * GRND_NONBLOCK, to make sure we
+ * have a valid random seed to pass to the
+ * secondary kernel.
+ */
+ result = syscall(SYS_getrandom, &fdt_val64,
+ sizeof(fdt_val64),
+ GRND_NONBLOCK);
+
+ if(result == -1) {
+ fprintf(stderr, "%s: Reading random bytes failed.\n",
+ __func__);
+
+ /* Currently on some arm64 platforms this
+ * 'getrandom' system call fails while booting
+ * the platform.
+ *
+ * In case, this happens at best we can set
+ * the 'kaslr_seed' as 0, indicating that the
+ * 2nd kernel will be booted with a 'nokaslr'
+ * like behaviour.
+ */
+ fdt_val64 = 0UL;
+ dbgprintf("%s: Disabling KASLR in secondary kernel.\n",
+ __func__);
+ }
+
+ nodeoffset = fdt_path_offset(new_buf, "/chosen");
+ result = fdt_setprop_inplace(new_buf,
+ nodeoffset, "kaslr-seed",
+ &fdt_val64, sizeof(fdt_val64));
+ if (result) {
+ dbgprintf("%s: fdt_setprop failed: %s\n",
+ __func__, fdt_strerror(result));
+ result = -EINVAL;
+ goto on_error;
+ }
+ }
+
+ if (on_crash) {
+ /* add linux,elfcorehdr */
+ nodeoffset = fdt_path_offset(new_buf, "/chosen");
+ result = fdt_setprop_ranges(new_buf, nodeoffset,
+ PROP_ELFCOREHDR, &elfcorehdr_mem, 1, false,
+ address_cells, size_cells);
+ if (result) {
+ dbgprintf("%s: fdt_setprop failed: %s\n", __func__,
+ fdt_strerror(result));
+ result = -EINVAL;
+ goto on_error;
+ }
+
+ /*
+ * add linux,usable-memory-range
+ *
+ * crash dump kernel support one or two regions, to make
+ * compatibility with existing user-space and older kdump, the
+ * low region is always the last one.
+ */
+ nodeoffset = fdt_path_offset(new_buf, "/chosen");
+ result = fdt_setprop_ranges(new_buf, nodeoffset,
+ PROP_USABLE_MEM_RANGE,
+ usablemem_rgns.ranges, usablemem_rgns.size, true,
+ address_cells, size_cells);
+ if (result) {
+ dbgprintf("%s: fdt_setprop failed: %s\n", __func__,
+ fdt_strerror(result));
+ result = -EINVAL;
+ goto on_error;
+ }
+ }
+
+ fdt_pack(new_buf);
+ dtb->buf = new_buf;
+ dtb->size = fdt_totalsize(new_buf);
+
+ dump_reservemap(dtb);
+
+ return result;
+
+on_error:
+ fprintf(stderr, "kexec: %s failed.\n", __func__);
+ if (new_buf)
+ free(new_buf);
+
+ return result;
+}
+
+unsigned long arm64_locate_kernel_segment(struct kexec_info *info)
+{
+ unsigned long hole;
+
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ unsigned long hole_end;
+
+ hole = (crash_reserved_mem[usablemem_rgns.size - 1].start < mem_min ?
+ mem_min : crash_reserved_mem[usablemem_rgns.size - 1].start);
+ hole = _ALIGN_UP(hole, MiB(2));
+ hole_end = hole + arm64_mem.text_offset + arm64_mem.image_size;
+
+ if ((hole_end > mem_max) ||
+ (hole_end > crash_reserved_mem[usablemem_rgns.size - 1].end)) {
+ dbgprintf("%s: Crash kernel out of range\n", __func__);
+ hole = ULONG_MAX;
+ }
+ } else {
+ hole = locate_hole(info,
+ arm64_mem.text_offset + arm64_mem.image_size,
+ MiB(2), 0, ULONG_MAX, 1);
+
+ if (hole == ULONG_MAX)
+ dbgprintf("%s: locate_hole failed\n", __func__);
+ }
+
+ return hole;
+}
+
+/**
+ * arm64_load_other_segments - Prepare the dtb, initrd and purgatory segments.
+ */
+
+int arm64_load_other_segments(struct kexec_info *info,
+ unsigned long image_base)
+{
+ int result;
+ unsigned long dtb_base;
+ unsigned long hole_min;
+ unsigned long hole_max;
+ unsigned long initrd_end;
+ uint64_t purgatory_sink;
+ char *initrd_buf = NULL;
+ struct dtb dtb;
+ char command_line[COMMAND_LINE_SIZE] = "";
+
+ if (arm64_opts.command_line) {
+ if (strlen(arm64_opts.command_line) >
+ sizeof(command_line) - 1) {
+ fprintf(stderr,
+ "Kernel command line too long for kernel!\n");
+ return EFAILED;
+ }
+
+ strncpy(command_line, arm64_opts.command_line,
+ sizeof(command_line) - 1);
+ command_line[sizeof(command_line) - 1] = 0;
+ }
+
+ purgatory_sink = find_purgatory_sink(arm64_opts.console);
+
+ dbgprintf("%s:%d: purgatory sink: 0x%" PRIx64 "\n", __func__, __LINE__,
+ purgatory_sink);
+
+ if (arm64_opts.dtb) {
+ dtb.name = "dtb_user";
+ dtb.buf = slurp_file(arm64_opts.dtb, &dtb.size);
+ } else {
+ result = read_1st_dtb(&dtb);
+
+ if (result) {
+ fprintf(stderr,
+ "kexec: Error: No device tree available.\n");
+ return EFAILED;
+ }
+ }
+
+ result = setup_2nd_dtb(&dtb, command_line,
+ info->kexec_flags & KEXEC_ON_CRASH);
+
+ if (result)
+ return EFAILED;
+
+ /* Put the other segments after the image. */
+
+ hole_min = image_base + arm64_mem.image_size;
+ if (info->kexec_flags & KEXEC_ON_CRASH)
+ hole_max = crash_reserved_mem[usablemem_rgns.size - 1].end;
+ else
+ hole_max = ULONG_MAX;
+
+ if (arm64_opts.initrd) {
+ initrd_buf = slurp_file(arm64_opts.initrd, &initrd_size);
+
+ if (!initrd_buf)
+ fprintf(stderr, "kexec: Empty ramdisk file.\n");
+ else {
+ /* Put the initrd after the kernel. */
+
+ initrd_base = add_buffer_phys_virt(info, initrd_buf,
+ initrd_size, initrd_size, 0,
+ hole_min, hole_max, 1, 0);
+
+ initrd_end = initrd_base + initrd_size;
+
+ /* Check limits as specified in booting.txt.
+ * The kernel may have as little as 32 GB of address space to map
+ * system memory and both kernel and initrd must be 1GB aligend.
+ */
+
+ if (_ALIGN_UP(initrd_end, GiB(1)) - _ALIGN_DOWN(image_base, GiB(1)) > GiB(32)) {
+ fprintf(stderr, "kexec: Error: image + initrd too big.\n");
+ return EFAILED;
+ }
+
+ dbgprintf("initrd: base %lx, size %lxh (%ld)\n",
+ initrd_base, initrd_size, initrd_size);
+
+ result = dtb_set_initrd((char **)&dtb.buf,
+ &dtb.size, initrd_base,
+ initrd_base + initrd_size);
+
+ if (result)
+ return EFAILED;
+ }
+ }
+
+ if (!initrd_buf) {
+ /* Don't reuse the initrd addresses from 1st DTB */
+ dtb_clear_initrd((char **)&dtb.buf, &dtb.size);
+ }
+
+ /* Check size limit as specified in booting.txt. */
+
+ if (dtb.size > MiB(2)) {
+ fprintf(stderr, "kexec: Error: dtb too big.\n");
+ return EFAILED;
+ }
+
+ dtb_base = add_buffer_phys_virt(info, dtb.buf, dtb.size, dtb.size,
+ 0, hole_min, hole_max, 1, 0);
+
+ /* dtb_base is valid if we got here. */
+
+ dbgprintf("dtb: base %lx, size %lxh (%ld)\n", dtb_base, dtb.size,
+ dtb.size);
+
+ elf_rel_build_load(info, &info->rhdr, purgatory, purgatory_size,
+ hole_min, hole_max, 1, 0);
+
+ info->entry = (void *)elf_rel_get_addr(&info->rhdr, "purgatory_start");
+
+ elf_rel_set_symbol(&info->rhdr, "arm64_sink", &purgatory_sink,
+ sizeof(purgatory_sink));
+
+ elf_rel_set_symbol(&info->rhdr, "arm64_kernel_entry", &image_base,
+ sizeof(image_base));
+
+ elf_rel_set_symbol(&info->rhdr, "arm64_dtb_addr", &dtb_base,
+ sizeof(dtb_base));
+
+ return 0;
+}
+
+/**
+ * virt_to_phys - For processing elf file values.
+ */
+
+unsigned long virt_to_phys(unsigned long v)
+{
+ unsigned long p;
+
+ p = v - get_vp_offset() + get_phys_offset();
+
+ return p;
+}
+
+/**
+ * phys_to_virt - For crashdump setup.
+ */
+
+unsigned long phys_to_virt(struct crash_elf_info *elf_info,
+ unsigned long long p)
+{
+ unsigned long v;
+
+ v = p - get_phys_offset() + elf_info->page_offset;
+
+ return v;
+}
+
+/**
+ * add_segment - Use virt_to_phys when loading elf files.
+ */
+
+void add_segment(struct kexec_info *info, const void *buf, size_t bufsz,
+ unsigned long base, size_t memsz)
+{
+ add_segment_phys_virt(info, buf, bufsz, base, memsz, 1);
+}
+
+static inline void set_phys_offset(int64_t v, char *set_method)
+{
+ if (arm64_mem.phys_offset == arm64_mem_ngv
+ || v < arm64_mem.phys_offset) {
+ arm64_mem.phys_offset = v;
+ dbgprintf("%s: phys_offset : %016lx (method : %s)\n",
+ __func__, arm64_mem.phys_offset,
+ set_method);
+ }
+}
+
+/**
+ * get_va_bits - Helper for getting VA_BITS
+ */
+
+static int get_va_bits(void)
+{
+ unsigned long long stext_sym_addr;
+
+ /*
+ * if already got from kcore
+ */
+ if (va_bits != -1)
+ goto out;
+
+
+ /* For kernel older than v4.19 */
+ fprintf(stderr, "Warning, can't get the VA_BITS from kcore\n");
+ stext_sym_addr = get_kernel_sym("_stext");
+
+ if (stext_sym_addr == 0) {
+ fprintf(stderr, "Can't get the symbol of _stext.\n");
+ return -1;
+ }
+
+ /* Derive va_bits as per arch/arm64/Kconfig */
+ if ((stext_sym_addr & PAGE_OFFSET_36) == PAGE_OFFSET_36) {
+ va_bits = 36;
+ } else if ((stext_sym_addr & PAGE_OFFSET_39) == PAGE_OFFSET_39) {
+ va_bits = 39;
+ } else if ((stext_sym_addr & PAGE_OFFSET_42) == PAGE_OFFSET_42) {
+ va_bits = 42;
+ } else if ((stext_sym_addr & PAGE_OFFSET_47) == PAGE_OFFSET_47) {
+ va_bits = 47;
+ } else if ((stext_sym_addr & PAGE_OFFSET_48) == PAGE_OFFSET_48) {
+ va_bits = 48;
+ } else {
+ fprintf(stderr,
+ "Cannot find a proper _stext for calculating VA_BITS\n");
+ return -1;
+ }
+
+out:
+ dbgprintf("va_bits : %d\n", va_bits);
+
+ return 0;
+}
+
+/**
+ * get_page_offset - Helper for getting PAGE_OFFSET
+ */
+
+int get_page_offset(unsigned long *page_offset)
+{
+ unsigned long long text_sym_addr, kernel_va_mid;
+ int ret;
+
+ text_sym_addr = get_kernel_sym("_text");
+ if (text_sym_addr == 0) {
+ fprintf(stderr, "Can't get the symbol of _text to calculate page_offset.\n");
+ return -1;
+ }
+
+ ret = get_va_bits();
+ if (ret < 0)
+ return ret;
+
+ /* Since kernel 5.4, kernel image is put above
+ * UINT64_MAX << (va_bits - 1)
+ */
+ kernel_va_mid = UINT64_MAX << (va_bits - 1);
+ /* older kernel */
+ if (text_sym_addr < kernel_va_mid)
+ *page_offset = UINT64_MAX << (va_bits - 1);
+ else
+ *page_offset = UINT64_MAX << va_bits;
+
+ dbgprintf("page_offset : %lx\n", *page_offset);
+
+ return 0;
+}
+
+static void arm64_scan_vmcoreinfo(char *pos)
+{
+ const char *str;
+
+ str = "NUMBER(VA_BITS)=";
+ if (memcmp(str, pos, strlen(str)) == 0)
+ va_bits = strtoul(pos + strlen(str), NULL, 10);
+}
+
+/**
+ * get_phys_offset_from_vmcoreinfo_pt_note - Helper for getting PHYS_OFFSET (and va_bits)
+ * from VMCOREINFO note inside 'kcore'.
+ */
+
+static int get_phys_offset_from_vmcoreinfo_pt_note(long *phys_offset)
+{
+ int fd, ret = 0;
+
+ if ((fd = open("/proc/kcore", O_RDONLY)) < 0) {
+ fprintf(stderr, "Can't open (%s).\n", "/proc/kcore");
+ return EFAILED;
+ }
+
+ arch_scan_vmcoreinfo = arm64_scan_vmcoreinfo;
+ ret = read_phys_offset_elf_kcore(fd, phys_offset);
+
+ close(fd);
+ return ret;
+}
+
+/**
+ * get_phys_base_from_pt_load - Helper for getting PHYS_OFFSET
+ * from PT_LOADs inside 'kcore'.
+ */
+
+int get_phys_base_from_pt_load(long *phys_offset)
+{
+ int i, fd, ret;
+ unsigned long long phys_start;
+ unsigned long long virt_start;
+
+ ret = get_page_offset(&page_offset);
+ if (ret < 0)
+ return ret;
+
+ if ((fd = open("/proc/kcore", O_RDONLY)) < 0) {
+ fprintf(stderr, "Can't open (%s).\n", "/proc/kcore");
+ return EFAILED;
+ }
+
+ read_elf(fd);
+
+ for (i = 0; get_pt_load(i,
+ &phys_start, NULL, &virt_start, NULL);
+ i++) {
+ if (virt_start != NOT_KV_ADDR
+ && virt_start >= page_offset
+ && phys_start != NOT_PADDR)
+ *phys_offset = phys_start -
+ (virt_start & ~page_offset);
+ }
+
+ close(fd);
+ return 0;
+}
+
+static bool to_be_excluded(char *str, unsigned long long start, unsigned long long end)
+{
+ if (!strncmp(str, CRASH_KERNEL, strlen(CRASH_KERNEL))) {
+ uint64_t load_start, load_end;
+
+ if (!get_crash_kernel_load_range(&load_start, &load_end) &&
+ (load_start == start) && (load_end == end))
+ return false;
+
+ return true;
+ }
+
+ if (!strncmp(str, SYSTEM_RAM, strlen(SYSTEM_RAM)) ||
+ !strncmp(str, KERNEL_CODE, strlen(KERNEL_CODE)) ||
+ !strncmp(str, KERNEL_DATA, strlen(KERNEL_DATA)))
+ return false;
+ else
+ return true;
+}
+
+/**
+ * get_memory_ranges - Try to get the memory ranges from
+ * /proc/iomem.
+ */
+int get_memory_ranges(struct memory_range **range, int *ranges,
+ unsigned long kexec_flags)
+{
+ long phys_offset = -1;
+ FILE *fp;
+ const char *iomem = proc_iomem();
+ char line[MAX_LINE], *str;
+ unsigned long long start, end;
+ int n, consumed;
+ struct memory_ranges memranges;
+ struct memory_range *last, excl_range;
+ int ret;
+
+ if (!try_read_phys_offset_from_kcore) {
+ /* Since kernel version 4.19, 'kcore' contains
+ * a new PT_NOTE which carries the VMCOREINFO
+ * information.
+ * If the same is available, one should prefer the
+ * same to retrieve 'PHYS_OFFSET' value exported by
+ * the kernel as this is now the standard interface
+ * exposed by kernel for sharing machine specific
+ * details with the userland.
+ */
+ ret = get_phys_offset_from_vmcoreinfo_pt_note(&phys_offset);
+ if (!ret) {
+ if (phys_offset != -1)
+ set_phys_offset(phys_offset,
+ "vmcoreinfo pt_note");
+ } else {
+ /* If we are running on a older kernel,
+ * try to retrieve the 'PHYS_OFFSET' value
+ * exported by the kernel in the 'kcore'
+ * file by reading the PT_LOADs and determining
+ * the correct combination.
+ */
+ ret = get_phys_base_from_pt_load(&phys_offset);
+ if (!ret)
+ if (phys_offset != -1)
+ set_phys_offset(phys_offset,
+ "pt_load");
+ }
+
+ try_read_phys_offset_from_kcore = true;
+ }
+
+ fp = fopen(iomem, "r");
+ if (!fp)
+ die("Cannot open %s\n", iomem);
+
+ memranges.ranges = NULL;
+ memranges.size = memranges.max_size = 0;
+
+ while (fgets(line, sizeof(line), fp) != 0) {
+ n = sscanf(line, "%llx-%llx : %n", &start, &end, &consumed);
+ if (n != 2)
+ continue;
+ str = line + consumed;
+
+ if (!strncmp(str, SYSTEM_RAM, strlen(SYSTEM_RAM))) {
+ ret = mem_regions_alloc_and_add(&memranges,
+ start, end - start + 1, RANGE_RAM);
+ if (ret) {
+ fprintf(stderr,
+ "Cannot allocate memory for ranges\n");
+ fclose(fp);
+ return -ENOMEM;
+ }
+
+ dbgprintf("%s:+[%d] %016llx - %016llx\n", __func__,
+ memranges.size - 1,
+ memranges.ranges[memranges.size - 1].start,
+ memranges.ranges[memranges.size - 1].end);
+ } else if (to_be_excluded(str, start, end)) {
+ if (!memranges.size)
+ continue;
+
+ /*
+ * Note: mem_regions_exclude() doesn't guarantee
+ * that the ranges are sorted out, but as long as
+ * we cope with /proc/iomem, we only operate on
+ * the last entry and so it is safe.
+ */
+
+ /* The last System RAM range */
+ last = &memranges.ranges[memranges.size - 1];
+
+ if (last->end < start)
+ /* New resource outside of System RAM */
+ continue;
+ if (end < last->start)
+ /* Already excluded by parent resource */
+ continue;
+
+ excl_range.start = start;
+ excl_range.end = end;
+ ret = mem_regions_alloc_and_exclude(&memranges, &excl_range);
+ if (ret) {
+ fprintf(stderr,
+ "Cannot allocate memory for ranges (exclude)\n");
+ fclose(fp);
+ return -ENOMEM;
+ }
+ dbgprintf("%s:- %016llx - %016llx\n",
+ __func__, start, end);
+ }
+ }
+
+ fclose(fp);
+
+ *range = memranges.ranges;
+ *ranges = memranges.size;
+
+ /* As a fallback option, we can try determining the PHYS_OFFSET
+ * value from the '/proc/iomem' entries as well.
+ *
+ * But note that this can be flaky, as on certain arm64
+ * platforms, it has been noticed that due to a hole at the
+ * start of physical ram exposed to kernel
+ * (i.e. it doesn't start from address 0), the kernel still
+ * calculates the 'memstart_addr' kernel variable as 0.
+ *
+ * Whereas the SYSTEM_RAM or IOMEM_RESERVED range in
+ * '/proc/iomem' would carry a first entry whose start address
+ * is non-zero (as the physical ram exposed to the kernel
+ * starts from a non-zero address).
+ *
+ * In such cases, if we rely on '/proc/iomem' entries to
+ * calculate the phys_offset, then we will have mismatch
+ * between the user-space and kernel space 'PHYS_OFFSET'
+ * value.
+ */
+ if (memranges.size)
+ set_phys_offset(memranges.ranges[0].start, "iomem");
+
+ dbgprint_mem_range("System RAM ranges;",
+ memranges.ranges, memranges.size);
+
+ return 0;
+}
+
+int arch_compat_trampoline(struct kexec_info *info)
+{
+ return 0;
+}
+
+int machine_verify_elf_rel(struct mem_ehdr *ehdr)
+{
+ return (ehdr->e_machine == EM_AARCH64);
+}
+
+enum aarch64_rel_type {
+ R_AARCH64_NONE = 0,
+ R_AARCH64_ABS64 = 257,
+ R_AARCH64_PREL32 = 261,
+ R_AARCH64_MOVW_UABS_G0_NC = 264,
+ R_AARCH64_MOVW_UABS_G1_NC = 266,
+ R_AARCH64_MOVW_UABS_G2_NC = 268,
+ R_AARCH64_MOVW_UABS_G3 =269,
+ R_AARCH64_LD_PREL_LO19 = 273,
+ R_AARCH64_ADR_PREL_LO21 = 274,
+ R_AARCH64_ADR_PREL_PG_HI21 = 275,
+ R_AARCH64_ADD_ABS_LO12_NC = 277,
+ R_AARCH64_JUMP26 = 282,
+ R_AARCH64_CALL26 = 283,
+ R_AARCH64_LDST64_ABS_LO12_NC = 286,
+ R_AARCH64_LDST128_ABS_LO12_NC = 299
+};
+
+static uint32_t get_bits(uint32_t value, int start, int end)
+{
+ uint32_t mask = ((uint32_t)1 << (end + 1 - start)) - 1;
+ return (value >> start) & mask;
+}
+
+void machine_apply_elf_rel(struct mem_ehdr *ehdr, struct mem_sym *UNUSED(sym),
+ unsigned long r_type, void *ptr, unsigned long address,
+ unsigned long value)
+{
+ uint64_t *loc64;
+ uint32_t *loc32;
+ uint64_t *location = (uint64_t *)ptr;
+ uint64_t data = *location;
+ uint64_t imm;
+ const char *type = NULL;
+
+ switch((enum aarch64_rel_type)r_type) {
+ case R_AARCH64_ABS64:
+ type = "ABS64";
+ loc64 = ptr;
+ *loc64 = cpu_to_elf64(ehdr, value);
+ break;
+ case R_AARCH64_PREL32:
+ type = "PREL32";
+ loc32 = ptr;
+ *loc32 = cpu_to_elf32(ehdr, value - address);
+ break;
+
+ /* Set a MOV[KZ] immediate field to bits [15:0] of X. No overflow check */
+ case R_AARCH64_MOVW_UABS_G0_NC:
+ type = "MOVW_UABS_G0_NC";
+ loc32 = ptr;
+ imm = get_bits(value, 0, 15);
+ *loc32 = cpu_to_le32(le32_to_cpu(*loc32) + (imm << 5));
+ break;
+ /* Set a MOV[KZ] immediate field to bits [31:16] of X. No overflow check */
+ case R_AARCH64_MOVW_UABS_G1_NC:
+ type = "MOVW_UABS_G1_NC";
+ loc32 = ptr;
+ imm = get_bits(value, 16, 31);
+ *loc32 = cpu_to_le32(le32_to_cpu(*loc32) + (imm << 5));
+ break;
+ /* Set a MOV[KZ] immediate field to bits [47:32] of X. No overflow check */
+ case R_AARCH64_MOVW_UABS_G2_NC:
+ type = "MOVW_UABS_G2_NC";
+ loc32 = ptr;
+ imm = get_bits(value, 32, 47);
+ *loc32 = cpu_to_le32(le32_to_cpu(*loc32) + (imm << 5));
+ break;
+ /* Set a MOV[KZ] immediate field to bits [63:48] of X */
+ case R_AARCH64_MOVW_UABS_G3:
+ type = "MOVW_UABS_G3";
+ loc32 = ptr;
+ imm = get_bits(value, 48, 63);
+ *loc32 = cpu_to_le32(le32_to_cpu(*loc32) + (imm << 5));
+ break;
+
+ case R_AARCH64_LD_PREL_LO19:
+ type = "LD_PREL_LO19";
+ loc32 = ptr;
+ *loc32 = cpu_to_le32(le32_to_cpu(*loc32)
+ + (((value - address) << 3) & 0xffffe0));
+ break;
+ case R_AARCH64_ADR_PREL_LO21:
+ if (value & 3)
+ die("%s: ERROR Unaligned value: %lx\n", __func__,
+ value);
+ type = "ADR_PREL_LO21";
+ loc32 = ptr;
+ *loc32 = cpu_to_le32(le32_to_cpu(*loc32)
+ + (((value - address) << 3) & 0xffffe0));
+ break;
+ case R_AARCH64_ADR_PREL_PG_HI21:
+ type = "ADR_PREL_PG_HI21";
+ imm = ((value & ~0xfff) - (address & ~0xfff)) >> 12;
+ loc32 = ptr;
+ *loc32 = cpu_to_le32(le32_to_cpu(*loc32)
+ + ((imm & 3) << 29) + ((imm & 0x1ffffc) << (5 - 2)));
+ break;
+ case R_AARCH64_ADD_ABS_LO12_NC:
+ type = "ADD_ABS_LO12_NC";
+ loc32 = ptr;
+ *loc32 = cpu_to_le32(le32_to_cpu(*loc32)
+ + ((value & 0xfff) << 10));
+ break;
+ case R_AARCH64_JUMP26:
+ type = "JUMP26";
+ loc32 = ptr;
+ *loc32 = cpu_to_le32(le32_to_cpu(*loc32)
+ + (((value - address) >> 2) & 0x3ffffff));
+ break;
+ case R_AARCH64_CALL26:
+ type = "CALL26";
+ loc32 = ptr;
+ *loc32 = cpu_to_le32(le32_to_cpu(*loc32)
+ + (((value - address) >> 2) & 0x3ffffff));
+ break;
+ /* encode imm field with bits [11:3] of value */
+ case R_AARCH64_LDST64_ABS_LO12_NC:
+ if (value & 7)
+ die("%s: ERROR Unaligned value: %lx\n", __func__,
+ value);
+ type = "LDST64_ABS_LO12_NC";
+ loc32 = ptr;
+ *loc32 = cpu_to_le32(le32_to_cpu(*loc32)
+ + ((value & 0xff8) << (10 - 3)));
+ break;
+
+ /* encode imm field with bits [11:4] of value */
+ case R_AARCH64_LDST128_ABS_LO12_NC:
+ if (value & 15)
+ die("%s: ERROR Unaligned value: %lx\n", __func__,
+ value);
+ type = "LDST128_ABS_LO12_NC";
+ loc32 = ptr;
+ imm = value & 0xff0;
+ *loc32 = cpu_to_le32(le32_to_cpu(*loc32) + (imm << (10 - 4)));
+ break;
+ default:
+ die("%s: ERROR Unknown type: %lu\n", __func__, r_type);
+ break;
+ }
+
+ dbgprintf("%s: %s %016lx->%016lx\n", __func__, type, data, *location);
+}
+
+void arch_reuse_initrd(void)
+{
+ reuse_initrd = 1;
+}
+
+void arch_update_purgatory(struct kexec_info *UNUSED(info))
+{
+}
diff --git a/kexec/arch/arm64/kexec-arm64.h b/kexec/arch/arm64/kexec-arm64.h
new file mode 100644
index 0000000..95fb5c2
--- /dev/null
+++ b/kexec/arch/arm64/kexec-arm64.h
@@ -0,0 +1,84 @@
+/*
+ * ARM64 kexec.
+ */
+
+#if !defined(KEXEC_ARM64_H)
+#define KEXEC_ARM64_H
+
+#include <stdbool.h>
+#include <sys/types.h>
+
+#include "image-header.h"
+#include "kexec.h"
+
+#define KEXEC_SEGMENT_MAX 64
+
+#define BOOT_BLOCK_VERSION 17
+#define BOOT_BLOCK_LAST_COMP_VERSION 16
+#define COMMAND_LINE_SIZE 2048 /* from kernel */
+
+#define KiB(x) ((x) * 1024UL)
+#define MiB(x) (KiB(x) * 1024UL)
+#define GiB(x) (MiB(x) * 1024UL)
+
+#define ULONGLONG_MAX (~0ULL)
+
+/*
+ * Incorrect address
+ */
+#define NOT_KV_ADDR (0x0)
+#define NOT_PADDR (ULONGLONG_MAX)
+
+int elf_arm64_probe(const char *kernel_buf, off_t kernel_size);
+int elf_arm64_load(int argc, char **argv, const char *kernel_buf,
+ off_t kernel_size, struct kexec_info *info);
+void elf_arm64_usage(void);
+
+int image_arm64_probe(const char *kernel_buf, off_t kernel_size);
+int image_arm64_load(int argc, char **argv, const char *kernel_buf,
+ off_t kernel_size, struct kexec_info *info);
+void image_arm64_usage(void);
+
+int uImage_arm64_probe(const char *buf, off_t len);
+int uImage_arm64_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void uImage_arm64_usage(void);
+
+int pez_arm64_probe(const char *kernel_buf, off_t kernel_size);
+int pez_arm64_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void pez_arm64_usage(void);
+
+
+extern off_t initrd_base;
+extern off_t initrd_size;
+
+/**
+ * struct arm64_mem - Memory layout info.
+ */
+
+struct arm64_mem {
+ int64_t phys_offset;
+ uint64_t text_offset;
+ uint64_t image_size;
+ uint64_t vp_offset;
+};
+
+#define arm64_mem_ngv UINT64_MAX
+extern struct arm64_mem arm64_mem;
+
+uint64_t get_phys_offset(void);
+uint64_t get_vp_offset(void);
+int get_page_offset(unsigned long *offset);
+
+static inline void reset_vp_offset(void)
+{
+ arm64_mem.vp_offset = arm64_mem_ngv;
+}
+
+int arm64_process_image_header(const struct arm64_image_header *h);
+unsigned long arm64_locate_kernel_segment(struct kexec_info *info);
+int arm64_load_other_segments(struct kexec_info *info,
+ unsigned long image_base);
+
+#endif
diff --git a/kexec/arch/arm64/kexec-elf-arm64.c b/kexec/arch/arm64/kexec-elf-arm64.c
new file mode 100644
index 0000000..e14f8e9
--- /dev/null
+++ b/kexec/arch/arm64/kexec-elf-arm64.c
@@ -0,0 +1,170 @@
+/*
+ * ARM64 kexec elf support.
+ */
+
+#define _GNU_SOURCE
+
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <linux/elf.h>
+
+#include "arch/options.h"
+#include "crashdump-arm64.h"
+#include "kexec-arm64.h"
+#include "kexec-elf.h"
+#include "kexec-syscall.h"
+
+int elf_arm64_probe(const char *kernel_buf, off_t kernel_size)
+{
+ struct mem_ehdr ehdr;
+ int result;
+
+ result = build_elf_exec_info(kernel_buf, kernel_size, &ehdr, 0);
+
+ if (result < 0) {
+ dbgprintf("%s: Not an ELF executable.\n", __func__);
+ goto on_exit;
+ }
+
+ if (ehdr.e_machine != EM_AARCH64) {
+ dbgprintf("%s: Not an AARCH64 ELF executable.\n", __func__);
+ result = -1;
+ goto on_exit;
+ }
+
+ result = 0;
+on_exit:
+ free_elf_info(&ehdr);
+ return result;
+}
+
+int elf_arm64_load(int argc, char **argv, const char *kernel_buf,
+ off_t kernel_size, struct kexec_info *info)
+{
+ const struct arm64_image_header *header = NULL;
+ unsigned long kernel_segment;
+ struct mem_ehdr ehdr;
+ int result;
+ int i;
+
+ if (info->file_mode) {
+ fprintf(stderr,
+ "ELF executable is not supported in kexec_file\n");
+
+ return EFAILED;
+ }
+
+ result = build_elf_exec_info(kernel_buf, kernel_size, &ehdr, 0);
+
+ if (result < 0) {
+ dbgprintf("%s: build_elf_exec_info failed\n", __func__);
+ goto exit;
+ }
+
+ /* Find and process the arm64 image header. */
+
+ for (i = 0; i < ehdr.e_phnum; i++) {
+ struct mem_phdr *phdr = &ehdr.e_phdr[i];
+ unsigned long header_offset;
+
+ if (phdr->p_type != PT_LOAD)
+ continue;
+
+ /*
+ * When CONFIG_ARM64_RANDOMIZE_TEXT_OFFSET=y the image header
+ * could be offset in the elf segment. The linker script sets
+ * ehdr.e_entry to the start of text.
+ */
+
+ header_offset = ehdr.e_entry - phdr->p_vaddr;
+
+ header = (const struct arm64_image_header *)(
+ kernel_buf + phdr->p_offset + header_offset);
+
+ if (!arm64_process_image_header(header)) {
+ dbgprintf("%s: e_entry: %016llx\n", __func__,
+ ehdr.e_entry);
+ dbgprintf("%s: p_vaddr: %016llx\n", __func__,
+ phdr->p_vaddr);
+ dbgprintf("%s: header_offset: %016lx\n", __func__,
+ header_offset);
+
+ break;
+ }
+ }
+
+ if (i == ehdr.e_phnum) {
+ dbgprintf("%s: Valid arm64 header not found\n", __func__);
+ result = EFAILED;
+ goto exit;
+ }
+
+ kernel_segment = arm64_locate_kernel_segment(info);
+
+ if (kernel_segment == ULONG_MAX) {
+ dbgprintf("%s: Kernel segment is not allocated\n", __func__);
+ result = EFAILED;
+ goto exit;
+ }
+
+ arm64_mem.vp_offset = _ALIGN_DOWN(ehdr.e_entry, MiB(2));
+ if (!(info->kexec_flags & KEXEC_ON_CRASH))
+ arm64_mem.vp_offset -= kernel_segment - get_phys_offset();
+
+ dbgprintf("%s: kernel_segment: %016lx\n", __func__, kernel_segment);
+ dbgprintf("%s: text_offset: %016lx\n", __func__,
+ arm64_mem.text_offset);
+ dbgprintf("%s: image_size: %016lx\n", __func__,
+ arm64_mem.image_size);
+ dbgprintf("%s: phys_offset: %016lx\n", __func__,
+ arm64_mem.phys_offset);
+ dbgprintf("%s: vp_offset: %016lx\n", __func__,
+ arm64_mem.vp_offset);
+ dbgprintf("%s: PE format: %s\n", __func__,
+ (arm64_header_check_pe_sig(header) ? "yes" : "no"));
+
+ /* create and initialize elf core header segment */
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ result = load_crashdump_segments(info);
+ if (result) {
+ dbgprintf("%s: Creating eflcorehdr failed.\n",
+ __func__);
+ goto exit;
+ }
+ }
+
+ /* load the kernel */
+ if (info->kexec_flags & KEXEC_ON_CRASH)
+ /*
+ * offset addresses in elf header in order to load
+ * vmlinux (elf_exec) into crash kernel's memory
+ */
+ fixup_elf_addrs(&ehdr);
+
+ result = elf_exec_load(&ehdr, info);
+
+ if (result) {
+ dbgprintf("%s: elf_exec_load failed\n", __func__);
+ goto exit;
+ }
+
+ /* load additional data */
+ result = arm64_load_other_segments(info, kernel_segment
+ + arm64_mem.text_offset);
+
+exit:
+ reset_vp_offset();
+ free_elf_info(&ehdr);
+ if (result)
+ fprintf(stderr, "kexec: Bad elf image file, load failed.\n");
+ return result;
+}
+
+void elf_arm64_usage(void)
+{
+ printf(
+" An ARM64 ELF image, big or little endian.\n"
+" Typically vmlinux or a stripped version of vmlinux.\n\n");
+}
diff --git a/kexec/arch/arm64/kexec-image-arm64.c b/kexec/arch/arm64/kexec-image-arm64.c
new file mode 100644
index 0000000..a196747
--- /dev/null
+++ b/kexec/arch/arm64/kexec-image-arm64.c
@@ -0,0 +1,119 @@
+/*
+ * ARM64 kexec binary image support.
+ */
+
+#define _GNU_SOURCE
+
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include "crashdump-arm64.h"
+#include "image-header.h"
+#include "kexec.h"
+#include "kexec-arm64.h"
+#include "kexec-syscall.h"
+#include "arch/options.h"
+
+int image_arm64_probe(const char *kernel_buf, off_t kernel_size)
+{
+ const struct arm64_image_header *h;
+
+ if (kernel_size < sizeof(struct arm64_image_header)) {
+ dbgprintf("%s: No arm64 image header.\n", __func__);
+ return -1;
+ }
+
+ h = (const struct arm64_image_header *)(kernel_buf);
+
+ if (!arm64_header_check_magic(h)) {
+ dbgprintf("%s: Bad arm64 image header.\n", __func__);
+ return -1;
+ }
+
+ return 0;
+}
+
+int image_arm64_load(int argc, char **argv, const char *kernel_buf,
+ off_t kernel_size, struct kexec_info *info)
+{
+ const struct arm64_image_header *header;
+ unsigned long kernel_segment;
+ int result;
+
+ if (info->file_mode) {
+ if (arm64_opts.initrd) {
+ info->initrd_fd = open(arm64_opts.initrd, O_RDONLY);
+ if (info->initrd_fd == -1) {
+ fprintf(stderr,
+ "Could not open initrd file %s:%s\n",
+ arm64_opts.initrd, strerror(errno));
+ result = EFAILED;
+ goto exit;
+ }
+ }
+
+ if (arm64_opts.command_line) {
+ info->command_line = (char *)arm64_opts.command_line;
+ info->command_line_len =
+ strlen(arm64_opts.command_line) + 1;
+ }
+
+ return 0;
+ }
+
+ header = (const struct arm64_image_header *)(kernel_buf);
+
+ if (arm64_process_image_header(header))
+ return EFAILED;
+
+ kernel_segment = arm64_locate_kernel_segment(info);
+
+ if (kernel_segment == ULONG_MAX) {
+ dbgprintf("%s: Kernel segment is not allocated\n", __func__);
+ result = EFAILED;
+ goto exit;
+ }
+
+ dbgprintf("%s: kernel_segment: %016lx\n", __func__, kernel_segment);
+ dbgprintf("%s: text_offset: %016lx\n", __func__,
+ arm64_mem.text_offset);
+ dbgprintf("%s: image_size: %016lx\n", __func__,
+ arm64_mem.image_size);
+ dbgprintf("%s: phys_offset: %016lx\n", __func__,
+ arm64_mem.phys_offset);
+ dbgprintf("%s: vp_offset: %016lx\n", __func__,
+ arm64_mem.vp_offset);
+ dbgprintf("%s: PE format: %s\n", __func__,
+ (arm64_header_check_pe_sig(header) ? "yes" : "no"));
+
+ /* create and initialize elf core header segment */
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ result = load_crashdump_segments(info);
+ if (result) {
+ dbgprintf("%s: Creating eflcorehdr failed.\n",
+ __func__);
+ goto exit;
+ }
+ }
+
+ /* load the kernel */
+ add_segment_phys_virt(info, kernel_buf, kernel_size,
+ kernel_segment + arm64_mem.text_offset,
+ arm64_mem.image_size, 0);
+
+ /* load additional data */
+ result = arm64_load_other_segments(info, kernel_segment
+ + arm64_mem.text_offset);
+
+exit:
+ if (result)
+ fprintf(stderr, "kexec: load failed.\n");
+ return result;
+}
+
+void image_arm64_usage(void)
+{
+ printf(
+" An ARM64 binary image, compressed or not, big or little endian.\n"
+" Typically an Image file.\n\n");
+}
diff --git a/kexec/arch/arm64/kexec-uImage-arm64.c b/kexec/arch/arm64/kexec-uImage-arm64.c
new file mode 100644
index 0000000..c466913
--- /dev/null
+++ b/kexec/arch/arm64/kexec-uImage-arm64.c
@@ -0,0 +1,52 @@
+/*
+ * uImage support added by David Woodhouse <dwmw2@infradead.org>
+ */
+#include <stdint.h>
+#include <string.h>
+#include <sys/types.h>
+#include <image.h>
+#include <kexec-uImage.h>
+#include "../../kexec.h"
+#include "kexec-arm64.h"
+
+int uImage_arm64_probe(const char *buf, off_t len)
+{
+ int ret;
+
+ ret = uImage_probe_kernel(buf, len, IH_ARCH_ARM64);
+
+ /* 0 - valid uImage.
+ * -1 - uImage is corrupted.
+ * 1 - image is not a uImage.
+ */
+ if (!ret)
+ return 0;
+ else
+ return -1;
+}
+
+int uImage_arm64_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ struct Image_info img;
+ int ret;
+
+ if (info->file_mode) {
+ fprintf(stderr,
+ "uImage is not supported in kexec_file\n");
+
+ return EFAILED;
+ }
+
+ ret = uImage_load(buf, len, &img);
+ if (ret)
+ return ret;
+
+ return image_arm64_load(argc, argv, img.buf, img.len, info);
+}
+
+void uImage_arm64_usage(void)
+{
+ printf(
+" An ARM64 U-boot uImage file, compressed or not, big or little endian.\n\n");
+}
diff --git a/kexec/arch/arm64/kexec-vmlinuz-arm64.c b/kexec/arch/arm64/kexec-vmlinuz-arm64.c
new file mode 100644
index 0000000..c0ee47c
--- /dev/null
+++ b/kexec/arch/arm64/kexec-vmlinuz-arm64.c
@@ -0,0 +1,110 @@
+/*
+ * ARM64 PE compressed Image (vmlinuz, ZBOOT) support.
+ *
+ * Several distros use 'make zinstall' rule inside
+ * 'arch/arm64/boot/Makefile' to install the arm64
+ * ZBOOT compressed file inside the boot destination
+ * directory (for e.g. /boot).
+ *
+ * Currently we cannot use kexec_file_load() to load vmlinuz
+ * PE images that self decompress.
+ *
+ * To support ZBOOT, we should:
+ * a). Copy the compressed contents of vmlinuz to a temporary file.
+ * b). Decompress (gunzip-decompress) the contents inside the
+ * temporary file.
+ * c). Validate the resulting image and write it back to the
+ * temporary file.
+ * d). Pass the 'fd' of the temporary file to the kernel space.
+ *
+ * Note this, module doesn't provide a _load() function instead
+ * relying on image_arm64_load() to load the resulting decompressed
+ * image.
+ *
+ * So basically the kernel space still gets a decompressed
+ * kernel image to load via kexec-tools.
+ */
+
+#define _GNU_SOURCE
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include "kexec-arm64.h"
+#include <kexec-pe-zboot.h>
+#include "arch/options.h"
+
+static int kernel_fd = -1;
+
+/* Returns:
+ * -1 : in case of error/invalid format (not a valid PE+compressed ZBOOT format.
+ */
+int pez_arm64_probe(const char *kernel_buf, off_t kernel_size)
+{
+ int ret = -1;
+ const struct arm64_image_header *h;
+ char *buf;
+ off_t buf_sz;
+
+ buf = (char *)kernel_buf;
+ buf_sz = kernel_size;
+ if (!buf)
+ return -1;
+ h = (const struct arm64_image_header *)buf;
+
+ dbgprintf("%s: PROBE.\n", __func__);
+ if (buf_sz < sizeof(struct arm64_image_header)) {
+ dbgprintf("%s: Not large enough to be a PE image.\n", __func__);
+ return -1;
+ }
+ if (!arm64_header_check_pe_sig(h)) {
+ dbgprintf("%s: Not an PE image.\n", __func__);
+ return -1;
+ }
+
+ if (buf_sz < sizeof(struct arm64_image_header) + h->pe_header) {
+ dbgprintf("%s: PE image offset larger than image.\n", __func__);
+ return -1;
+ }
+
+ if (memcmp(&buf[h->pe_header],
+ arm64_pe_machtype, sizeof(arm64_pe_machtype))) {
+ dbgprintf("%s: PE header doesn't match machine type.\n", __func__);
+ return -1;
+ }
+
+ ret = pez_prepare(buf, buf_sz, &kernel_fd);
+
+ if (!ret) {
+ /* validate the arm64 specific header */
+ struct arm64_image_header hdr_check;
+ if (read(kernel_fd, &hdr_check, sizeof(hdr_check)) != sizeof(hdr_check))
+ goto bad_header;
+
+ lseek(kernel_fd, 0, SEEK_SET);
+
+ if (!arm64_header_check_magic(&hdr_check)) {
+ dbgprintf("%s: Bad arm64 image header.\n", __func__);
+ goto bad_header;
+ }
+ }
+
+ return ret;
+bad_header:
+ close(kernel_fd);
+ free(buf);
+ return -1;
+}
+
+int pez_arm64_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ info->kernel_fd = kernel_fd;
+ return image_arm64_load(argc, argv, buf, len, info);
+}
+
+void pez_arm64_usage(void)
+{
+ printf(
+" An ARM64 vmlinuz, PE image of a compressed, little endian.\n"
+" kernel, built with ZBOOT enabled.\n\n");
+}
diff --git a/kexec/arch/cris/Makefile b/kexec/arch/cris/Makefile
new file mode 100644
index 0000000..4982f3e
--- /dev/null
+++ b/kexec/arch/cris/Makefile
@@ -0,0 +1,13 @@
+cris_KEXEC_SRCS = kexec/arch/cris/kexec-cris.c
+cris_KEXEC_SRCS += kexec/arch/cris/kexec-elf-cris.c
+cris_KEXEC_SRCS += kexec/arch/cris/cris-setup-simple.S
+cris_KEXEC_SRCS += kexec/arch/cris/kexec-elf-rel-cris.c
+
+cris_ADD_BUFFER =
+cris_ADD_SEGMENT =
+cris_VIRT_TO_PHYS =
+
+dist += kexec/arch/cris/Makefile $(cris_KEXEC_SRCS) \
+ kexec/arch/cris/kexec-cris.h \
+ kexec/arch/cris/include/arch/options.h
+
diff --git a/kexec/arch/cris/cris-setup-simple.S b/kexec/arch/cris/cris-setup-simple.S
new file mode 100644
index 0000000..764f188
--- /dev/null
+++ b/kexec/arch/cris/cris-setup-simple.S
@@ -0,0 +1,31 @@
+/*
+ * cris-setup-simple.S - code to execute before stepping into the new kernel.
+ * Copyright (C) 2008 AXIS Communications AB
+ * Written by Edgar E. Iglesias
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+ .data
+ .globl cris_trampoline
+cris_trampoline:
+ .balign 4
+ lapc cris_regframe, $sp
+ moveq 0, $r0
+ move $r0, $pid
+
+ movem [$sp+], $r14
+ jump $r0
+ nop
+
+ .globl cris_regframe
+cris_regframe:
+ .balign 4
+ .fill 16, 4, 0
+cris_trampoline_end:
+
+ .globl cris_trampoline_size
+cris_trampoline_size:
+ .long cris_trampoline_end - cris_trampoline
+
diff --git a/kexec/arch/cris/include/arch/options.h b/kexec/arch/cris/include/arch/options.h
new file mode 100644
index 0000000..1c1a029
--- /dev/null
+++ b/kexec/arch/cris/include/arch/options.h
@@ -0,0 +1,35 @@
+#ifndef KEXEC_ARCH_CRIS_OPTIONS_H
+#define KEXEC_ARCH_CRIS_OPTIONS_H
+
+#define OPT_ARCH_MAX (OPT_MAX+0)
+#define OPT_APPEND (OPT_ARCH_MAX+0)
+
+/* Options relevant to the architecture (excluding loader-specific ones),
+ * in this case none:
+ */
+#define KEXEC_ARCH_OPTIONS \
+ KEXEC_OPTIONS \
+
+#define KEXEC_ARCH_OPT_STR KEXEC_OPT_STR ""
+
+/* The following two #defines list ALL of the options added by all of the
+ * architecture's loaders.
+ * o main() uses this complete list to scan for its options, ignoring
+ * arch-specific/loader-specific ones.
+ * o Then, arch_process_options() uses this complete list to scan for its
+ * options, ignoring general/loader-specific ones.
+ * o Then, the file_type[n].load re-scans for options, using
+ * KEXEC_ARCH_OPTIONS plus its loader-specific options subset.
+ * Any unrecognised options cause an error here.
+ *
+ * This is done so that main()'s/arch_process_options()'s getopt_long() calls
+ * don't choose a kernel filename from random arguments to options they don't
+ * recognise -- as they now recognise (if not act upon) all possible options.
+ */
+#define KEXEC_ALL_OPTIONS \
+ KEXEC_ARCH_OPTIONS \
+ {"append", 1, 0, OPT_APPEND},
+
+#define KEXEC_ALL_OPT_STR KEXEC_ARCH_OPT_STR
+
+#endif /* KEXEC_ARCH_CRIS_OPTIONS_H */
diff --git a/kexec/arch/cris/kexec-cris.c b/kexec/arch/cris/kexec-cris.c
new file mode 100644
index 0000000..3b69709
--- /dev/null
+++ b/kexec/arch/cris/kexec-cris.c
@@ -0,0 +1,111 @@
+/*
+ * kexec-cris.c
+ * Copyright (C) 2008 AXIS Communications AB
+ * Written by Edgar E. Iglesias
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+#include <stddef.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <getopt.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "kexec-cris.h"
+#include <arch/options.h>
+
+#define MAX_MEMORY_RANGES 64
+#define MAX_LINE 160
+static struct memory_range memory_range[MAX_MEMORY_RANGES];
+
+/* Return a sorted list of memory ranges. */
+int get_memory_ranges(struct memory_range **range, int *ranges,
+ unsigned long UNUSED(kexec_flags))
+{
+ int memory_ranges = 0;
+
+ memory_range[memory_ranges].start = 0x40000000;
+ memory_range[memory_ranges].end = 0x41000000;
+ memory_range[memory_ranges].type = RANGE_RAM;
+ memory_ranges++;
+
+ memory_range[memory_ranges].start = 0xc0000000;
+ memory_range[memory_ranges].end = 0xc1000000;
+ memory_range[memory_ranges].type = RANGE_RAM;
+ memory_ranges++;
+
+ *range = memory_range;
+ *ranges = memory_ranges;
+ return 0;
+}
+
+struct file_type file_type[] = {
+ {"elf-cris", elf_cris_probe, elf_cris_load, elf_cris_usage},
+};
+int file_types = sizeof(file_type) / sizeof(file_type[0]);
+
+void arch_usage(void)
+{
+}
+
+int arch_process_options(int argc, char **argv)
+{
+ return 0;
+}
+
+const struct arch_map_entry arches[] = {
+ { "cris", KEXEC_ARCH_CRIS },
+ { "crisv32", KEXEC_ARCH_CRIS },
+ { 0 },
+};
+
+int arch_compat_trampoline(struct kexec_info *UNUSED(info))
+{
+ return 0;
+}
+
+void arch_update_purgatory(struct kexec_info *UNUSED(info))
+{
+}
+
+int is_crashkernel_mem_reserved(void)
+{
+ return 0;
+}
+
+int get_crash_kernel_load_range(uint64_t *start, uint64_t *end)
+{
+ /* Crash kernel region size is not exposed by the system */
+ return -1;
+}
+
+unsigned long virt_to_phys(unsigned long addr)
+{
+ return (addr) & 0x7fffffff;
+}
+
+/*
+ * add_segment() should convert base to a physical address on cris,
+ * while the default is just to work with base as is */
+void add_segment(struct kexec_info *info, const void *buf, size_t bufsz,
+ unsigned long base, size_t memsz)
+{
+ add_segment_phys_virt(info, buf, bufsz, base, memsz, 1);
+}
+
+/*
+ * add_buffer() should convert base to a physical address on cris,
+ * while the default is just to work with base as is */
+unsigned long add_buffer(struct kexec_info *info, const void *buf,
+ unsigned long bufsz, unsigned long memsz,
+ unsigned long buf_align, unsigned long buf_min,
+ unsigned long buf_max, int buf_end)
+{
+ return add_buffer_phys_virt(info, buf, bufsz, memsz, buf_align,
+ buf_min, buf_max, buf_end, 1);
+}
+
diff --git a/kexec/arch/cris/kexec-cris.h b/kexec/arch/cris/kexec-cris.h
new file mode 100644
index 0000000..7ee9945
--- /dev/null
+++ b/kexec/arch/cris/kexec-cris.h
@@ -0,0 +1,9 @@
+#ifndef KEXEC_CRIS_H
+#define KEXEC_CRIS_H
+
+int elf_cris_probe(const char *buf, off_t len);
+int elf_cris_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void elf_cris_usage(void);
+
+#endif /* KEXEC_CRIS_H */
diff --git a/kexec/arch/cris/kexec-elf-cris.c b/kexec/arch/cris/kexec-elf-cris.c
new file mode 100644
index 0000000..7e251e6
--- /dev/null
+++ b/kexec/arch/cris/kexec-elf-cris.c
@@ -0,0 +1,133 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2008 AXIS Communications AB
+ * Written by Edgar E. Iglesias
+ *
+ * Based on x86 implementation,
+ * Copyright (C) 2003-2005 Eric Biederman (ebiederm@xmission.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-elf-boot.h"
+#include <arch/options.h>
+#include "kexec-cris.h"
+
+int elf_cris_probe(const char *buf, off_t len)
+{
+ struct mem_ehdr ehdr;
+ int result;
+ result = build_elf_exec_info(buf, len, &ehdr, 0);
+ if (result < 0)
+ goto out;
+
+ /* Verify the architecuture specific bits */
+ if (ehdr.e_machine != EM_CRIS) {
+ result = -1;
+ goto out;
+ }
+
+ result = 0;
+ out:
+ free_elf_info(&ehdr);
+ return result;
+}
+
+void elf_cris_usage(void)
+{
+ printf(" --append=STRING Set the kernel command line to STRING\n"
+ );
+}
+
+#define CRAMFS_MAGIC 0x28cd3d45
+#define JHEAD_MAGIC 0x1FF528A6
+#define JHEAD_SIZE 8
+#define RAM_INIT_MAGIC 0x56902387
+#define COMMAND_LINE_MAGIC 0x87109563
+#define NAND_BOOT_MAGIC 0x9a9db001
+
+int elf_cris_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ struct mem_ehdr ehdr;
+ char *command_line;
+ unsigned int *trampoline_buf;
+ unsigned long trampoline_base;
+ int opt;
+ extern void cris_trampoline(void);
+ extern unsigned long cris_trampoline_size;
+ extern struct regframe_t {
+ unsigned int regs[16];
+ } cris_regframe;
+
+ /* See options.h -- add any more there, too. */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ {"append", 1, 0, OPT_APPEND},
+ { 0, 0, 0, 0 },
+ };
+
+ static const char short_options[] = KEXEC_OPT_STR "";
+
+ /*
+ * Parse the command line arguments
+ */
+ command_line = 0;
+ while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch(opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX) {
+ break;
+ }
+ case OPT_APPEND:
+ command_line = optarg;
+ break;
+ }
+ }
+
+ /* Load the ELF executable */
+ elf_exec_build_load(info, &ehdr, buf, len, 0);
+
+ cris_regframe.regs[0] = virt_to_phys(ehdr.e_entry);
+ cris_regframe.regs[8] = RAM_INIT_MAGIC;
+ cris_regframe.regs[12] = NAND_BOOT_MAGIC;
+
+ trampoline_buf = xmalloc(cris_trampoline_size);
+ trampoline_base = add_buffer_virt(info,
+ trampoline_buf,
+ cris_trampoline_size,
+ cris_trampoline_size,
+ 4, 0, elf_max_addr(&ehdr), 1);
+ memcpy(trampoline_buf,
+ cris_trampoline, cris_trampoline_size);
+ info->entry = (void *)trampoline_base;
+ return 0;
+}
diff --git a/kexec/arch/cris/kexec-elf-rel-cris.c b/kexec/arch/cris/kexec-elf-rel-cris.c
new file mode 100644
index 0000000..255cc2c
--- /dev/null
+++ b/kexec/arch/cris/kexec-elf-rel-cris.c
@@ -0,0 +1,43 @@
+/*
+ * kexec-elf-rel-cris.c - kexec Elf relocation routines
+ * Copyright (C) 2008 AXIS Communications AB
+ * Written by Edgar E. Iglesias
+ *
+ * derived from ../ppc/kexec-elf-rel-ppc.c
+ * Copyright (C) 2004 Albert Herranz
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+*/
+
+#include <stdio.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+
+int machine_verify_elf_rel(struct mem_ehdr *ehdr)
+{
+ if (ehdr->ei_data != ELFDATA2MSB) {
+ return 0;
+ }
+ if (ehdr->ei_class != ELFCLASS32) {
+ return 0;
+ }
+ if (ehdr->e_machine != EM_CRIS) {
+ return 0;
+ }
+ return 1;
+}
+
+void machine_apply_elf_rel(struct mem_ehdr *UNUSED(ehdr),
+ struct mem_sym *UNUSED(sym), unsigned long r_type, void *location,
+ unsigned long address, unsigned long value)
+{
+ switch(r_type) {
+
+ default:
+ die("Unknown rela relocation: %lu\n", r_type);
+ break;
+ }
+ return;
+}
diff --git a/kexec/arch/hppa/Makefile b/kexec/arch/hppa/Makefile
new file mode 100644
index 0000000..e98f6da
--- /dev/null
+++ b/kexec/arch/hppa/Makefile
@@ -0,0 +1,13 @@
+#
+# kexec hppa (linux booting linux)
+#
+hppa_KEXEC_SRCS = kexec/arch/hppa/kexec-hppa.c
+hppa_KEXEC_SRCS += kexec/arch/hppa/kexec-elf-hppa.c
+hppa_KEXEC_SRCS += kexec/arch/hppa/kexec-elf-rel-hppa.c
+
+hppa_ADD_SEGMENT =
+hppa_VIRT_TO_PHYS =
+
+dist += kexec/arch/hppa/Makefile $(hppa_KEXEC_SRCS) \
+ kexec/arch/hppa/kexec-hppa.h \
+ kexec/arch/hppa/include/arch/options.h
diff --git a/kexec/arch/hppa/include/arch/options.h b/kexec/arch/hppa/include/arch/options.h
new file mode 100644
index 0000000..e9deb51
--- /dev/null
+++ b/kexec/arch/hppa/include/arch/options.h
@@ -0,0 +1,32 @@
+#ifndef KEXEC_ARCH_HPPA_OPTIONS_H
+#define KEXEC_ARCH_HPPA_OPTIONS_H
+
+#define OPT_ARCH_MAX (OPT_MAX+0)
+
+#define KEXEC_ARCH_OPTIONS \
+ KEXEC_OPTIONS
+
+#define KEXEC_ARCH_OPT_STR KEXEC_OPT_STR ""
+
+#define KEXEC_ALL_OPTIONS \
+ KEXEC_ARCH_OPTIONS \
+ { "command-line", 1, 0, OPT_APPEND }, \
+ { "reuse-cmdline", 0, 0, OPT_REUSE_CMDLINE }, \
+ { "append", 1, 0, OPT_APPEND }, \
+ { "initrd", 1, 0, OPT_RAMDISK }, \
+ { "ramdisk", 1, 0, OPT_RAMDISK },
+
+
+#define KEXEC_ALL_OPT_STR KEXEC_ARCH_OPT_STR ""
+
+/* See the other architectures for details of these; HPPA has no
+ * loader-specific options yet.
+ */
+#define OPT_ARCH_MAX (OPT_MAX+0)
+
+#define OPT_APPEND (OPT_ARCH_MAX+0)
+#define OPT_REUSE_CMDLINE (OPT_ARCH_MAX+1)
+#define OPT_RAMDISK (OPT_ARCH_MAX+2)
+
+#define MAX_MEMORY_RANGES 16
+#endif /* KEXEC_ARCH_HPPA_OPTIONS_H */
diff --git a/kexec/arch/hppa/kexec-elf-hppa.c b/kexec/arch/hppa/kexec-elf-hppa.c
new file mode 100644
index 0000000..474a919
--- /dev/null
+++ b/kexec/arch/hppa/kexec-elf-hppa.c
@@ -0,0 +1,159 @@
+/*
+ * kexec-elf-hppa.c - kexec Elf loader for hppa
+ *
+ * Copyright (c) 2019 Sven Schnelle <svens@stackframe.org>
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+*/
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <elf.h>
+#include <boot/elf_boot.h>
+#include <ip_checksum.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "kexec-hppa.h"
+#include <arch/options.h>
+
+#define PAGE_SIZE 4096
+
+extern unsigned long phys_offset;
+
+int elf_hppa_probe(const char *buf, off_t len)
+{
+ struct mem_ehdr ehdr;
+ int result;
+ result = build_elf_exec_info(buf, len, &ehdr, 0);
+ if (result < 0)
+ goto out;
+
+ phys_offset = ehdr.e_entry & 0xf0000000;
+ /* Verify the architecuture specific bits */
+ if (ehdr.e_machine != EM_PARISC) {
+ /* for a different architecture */
+ fprintf(stderr, "Not for this architecture.\n");
+ result = -1;
+ goto out;
+ }
+ result = 0;
+ out:
+ free_elf_info(&ehdr);
+ return result;
+}
+
+void elf_hppa_usage(void)
+{
+ printf(" --command-line=STRING Set the kernel command line to STRING\n"
+ " --append=STRING Set the kernel command line to STRING\n"
+ " --reuse-cmdline Use kernel command line from running system.\n"
+ " --ramdisk=FILE Use FILE as the kernel's initial ramdisk.\n"
+ " --initrd=FILE Use FILE as the kernel's initial ramdisk.\n"
+ );
+}
+
+int elf_hppa_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ struct mem_ehdr ehdr;
+ char *cmdline = NULL, *ramdisk = NULL;
+ int opt, result, i;
+ unsigned long ramdisk_addr = 0;
+ off_t ramdisk_size = 0;
+
+ static const struct option options[] = {
+ KEXEC_ALL_OPTIONS
+ { 0, 0, NULL, 0 },
+ };
+
+ static const char short_options[] = KEXEC_ALL_OPT_STR;
+
+ while ((opt = getopt_long(argc, argv, short_options, options, 0)) !=
+ -1) {
+ switch (opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX)
+ break;
+ case OPT_APPEND:
+ cmdline = strdup(optarg);
+ break;
+ case OPT_REUSE_CMDLINE:
+ cmdline = get_command_line();
+ break;
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+ }
+ }
+
+ if (info->file_mode) {
+ if (cmdline) {
+ info->command_line = cmdline;
+ info->command_line_len = strlen(cmdline) + 1;
+ }
+
+ if (ramdisk) {
+ info->initrd_fd = open(ramdisk, O_RDONLY);
+ if (info->initrd_fd == -1) {
+ fprintf(stderr, "Could not open initrd file "
+ "%s:%s\n", ramdisk, strerror(errno));
+ return -1;
+ }
+ }
+ return 0;
+ }
+
+ result = build_elf_exec_info(buf, len, &ehdr, 0);
+ if (result < 0)
+ die("ELF exec parse failed\n");
+
+ /* Fixup PT_LOAD segments that include the ELF header (offset zero) */
+ for (i = 0; i < ehdr.e_phnum; i++) {
+ struct mem_phdr *phdr;
+ phdr = &ehdr.e_phdr[i];
+ if (phdr->p_type != PT_LOAD || phdr->p_offset)
+ continue;
+
+ dbgprintf("Removing ELF header from segment %d\n", i);
+ phdr->p_paddr += PAGE_SIZE;
+ phdr->p_vaddr += PAGE_SIZE;
+ phdr->p_filesz -= PAGE_SIZE;
+ phdr->p_memsz -= PAGE_SIZE;
+ phdr->p_offset += PAGE_SIZE;
+ phdr->p_data += PAGE_SIZE;
+ }
+
+ /* Load the ELF data */
+ result = elf_exec_load(&ehdr, info);
+ if (result < 0)
+ die("ELF exec load failed\n");
+
+ info->entry = (void *)virt_to_phys(ehdr.e_entry);
+
+
+ /* Load ramdisk */
+ if (ramdisk) {
+ void *initrd = slurp_decompress_file(ramdisk, &ramdisk_size);
+ /* Store ramdisk at top of first memory chunk */
+ ramdisk_addr = _ALIGN_DOWN(info->memory_range[0].end -
+ ramdisk_size + 1, PAGE_SIZE);
+ if (!buf)
+ die("Ramdisk load failed\n");
+ add_buffer(info, initrd, ramdisk_size, ramdisk_size,
+ PAGE_SIZE, ramdisk_addr, info->memory_range[0].end,
+ 1);
+ }
+
+ return 0;
+}
diff --git a/kexec/arch/hppa/kexec-elf-rel-hppa.c b/kexec/arch/hppa/kexec-elf-rel-hppa.c
new file mode 100644
index 0000000..661b67b
--- /dev/null
+++ b/kexec/arch/hppa/kexec-elf-rel-hppa.c
@@ -0,0 +1,37 @@
+/*
+ * kexec-elf-rel-hppa.c - kexec Elf relocation routines
+ *
+ * Copyright (C) 2019 Sven Schnelle <svens@stackframe.org>
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+*/
+
+#include <stdio.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+
+int machine_verify_elf_rel(struct mem_ehdr *ehdr)
+{
+ if (ehdr->ei_data != ELFDATA2MSB)
+ return 0;
+ if (ehdr->e_machine != EM_PARISC)
+ return 0;
+ return 1;
+}
+
+void machine_apply_elf_rel(struct mem_ehdr *UNUSED(ehdr),
+ struct mem_sym *UNUSED(sym),
+ unsigned long r_type,
+ void *UNUSED(location),
+ unsigned long UNUSED(address),
+ unsigned long UNUSED(value))
+{
+ switch (r_type) {
+ default:
+ die("Unknown rela relocation: %lu\n", r_type);
+ break;
+ }
+ return;
+}
diff --git a/kexec/arch/hppa/kexec-hppa.c b/kexec/arch/hppa/kexec-hppa.c
new file mode 100644
index 0000000..77c9739
--- /dev/null
+++ b/kexec/arch/hppa/kexec-hppa.c
@@ -0,0 +1,148 @@
+/*
+ * kexec-hppa.c - kexec for hppa
+ *
+ * Copyright (C) 2019 Sven Schnelle <svens@stackframe.org>
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+#include <stddef.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <getopt.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "kexec-hppa.h"
+#include <arch/options.h>
+
+#define SYSTEM_RAM "System RAM\n"
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+static struct memory_range memory_range[MAX_MEMORY_RANGES];
+unsigned long phys_offset;
+
+/* Return a sorted list of available memory ranges. */
+int get_memory_ranges(struct memory_range **range, int *ranges,
+ unsigned long UNUSED(kexec_flags))
+{
+ const char *iomem = proc_iomem();
+ int memory_ranges = 0;
+ char line[512];
+ FILE *fp;
+
+ fp = fopen(iomem, "r");
+
+ if (!fp) {
+ fprintf(stderr, "Cannot open %s: %s\n",
+ iomem, strerror(errno));
+ return -1;
+ }
+
+ while(fgets(line, sizeof(line), fp) != 0) {
+ unsigned long long start, end;
+ char *str;
+ int type;
+ int consumed;
+ int count;
+
+
+ count = sscanf(line, "%llx-%llx : %n", &start, &end, &consumed);
+
+ if (count != 2)
+ continue;
+
+ str = line + consumed;
+
+ if (memcmp(str, SYSTEM_RAM, strlen(SYSTEM_RAM)) == 0) {
+ type = RANGE_RAM;
+ } else if (memcmp(str, "reserved\n", 9) == 0) {
+ type = RANGE_RESERVED;
+ } else {
+ continue;
+ }
+
+ memory_range[memory_ranges].start = start;
+ memory_range[memory_ranges].end = end;
+ memory_range[memory_ranges].type = type;
+ if (++memory_ranges >= MAX_MEMORY_RANGES)
+ break;
+ }
+ fclose(fp);
+ *range = memory_range;
+ *ranges = memory_ranges;
+
+ dbgprint_mem_range("MEMORY RANGES", *range, *ranges);
+ return 0;
+}
+
+struct file_type file_type[] = {
+ {"elf-hppa", elf_hppa_probe, elf_hppa_load, elf_hppa_usage},
+};
+int file_types = ARRAY_SIZE(file_type);
+
+void arch_usage(void)
+{
+}
+
+int arch_process_options(int argc, char **argv)
+{
+ static const struct option options[] = {
+ KEXEC_ALL_OPTIONS
+ { 0, 0, NULL, 0 },
+ };
+ static const char short_options[] = KEXEC_ALL_OPT_STR;
+ int opt;
+
+ opterr = 0; /* Don't complain about unrecognized options here */
+ while ((opt = getopt_long(argc, argv, short_options, options, 0)) !=
+ -1) {
+ switch (opt) {
+ default:
+ break;
+ }
+ }
+ /* Reset getopt for the next pass; called in other source modules */
+ opterr = 1;
+ optind = 1;
+ return 0;
+}
+
+const struct arch_map_entry arches[] = {
+ { "parisc64", KEXEC_ARCH_HPPA },
+ { "parisc", KEXEC_ARCH_HPPA },
+ { NULL, 0 },
+};
+
+int arch_compat_trampoline(struct kexec_info *UNUSED(info))
+{
+ return 0;
+}
+
+void arch_update_purgatory(struct kexec_info *UNUSED(info))
+{
+}
+
+int is_crashkernel_mem_reserved(void)
+{
+ return 0;
+}
+
+int get_crash_kernel_load_range(uint64_t *start, uint64_t *end)
+{
+ /* Crash kernel region size is not exposed by the system */
+ return -1;
+}
+
+void add_segment(struct kexec_info *info, const void *buf, size_t bufsz,
+ unsigned long base, size_t memsz)
+{
+ add_segment_phys_virt(info, buf, bufsz, base, memsz, 1);
+}
+
+unsigned long virt_to_phys(unsigned long addr)
+{
+ return addr - phys_offset;
+}
diff --git a/kexec/arch/hppa/kexec-hppa.h b/kexec/arch/hppa/kexec-hppa.h
new file mode 100644
index 0000000..485e5b6
--- /dev/null
+++ b/kexec/arch/hppa/kexec-hppa.h
@@ -0,0 +1,9 @@
+#ifndef KEXEC_HPPA_H
+#define KEXEC_HPPA_H
+
+int elf_hppa_probe(const char *buf, off_t len);
+int elf_hppa_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void elf_hppa_usage(void);
+
+#endif /* KEXEC_HPPA_H */
diff --git a/kexec/arch/i386/Makefile b/kexec/arch/i386/Makefile
new file mode 100644
index 0000000..f486103
--- /dev/null
+++ b/kexec/arch/i386/Makefile
@@ -0,0 +1,20 @@
+#
+# kexec i386 (linux booting linux)
+#
+i386_KEXEC_SRCS = kexec/arch/i386/kexec-x86.c
+i386_KEXEC_SRCS += kexec/arch/i386/kexec-x86-common.c
+i386_KEXEC_SRCS += kexec/arch/i386/kexec-elf-x86.c
+i386_KEXEC_SRCS += kexec/arch/i386/kexec-elf-rel-x86.c
+i386_KEXEC_SRCS += kexec/arch/i386/kexec-bzImage.c
+i386_KEXEC_SRCS += kexec/arch/i386/kexec-multiboot-x86.c
+i386_KEXEC_SRCS += kexec/arch/i386/kexec-mb2-x86.c
+i386_KEXEC_SRCS += kexec/arch/i386/kexec-beoboot-x86.c
+i386_KEXEC_SRCS += kexec/arch/i386/kexec-nbi.c
+i386_KEXEC_SRCS += kexec/arch/i386/x86-linux-setup.c
+i386_KEXEC_SRCS += kexec/arch/i386/crashdump-x86.c
+
+dist += kexec/arch/i386/Makefile $(i386_KEXEC_SRCS) \
+ kexec/arch/i386/crashdump-x86.h \
+ kexec/arch/i386/kexec-x86.h \
+ kexec/arch/i386/x86-linux-setup.h \
+ kexec/arch/i386/include/arch/options.h
diff --git a/kexec/arch/i386/crashdump-x86.c b/kexec/arch/i386/crashdump-x86.c
new file mode 100644
index 0000000..df1f24c
--- /dev/null
+++ b/kexec/arch/i386/crashdump-x86.c
@@ -0,0 +1,1049 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Created by: Vivek Goyal (vgoyal@in.ibm.com)
+ * old x86_64 version Created by: Murali M Chakravarthy (muralim@in.ibm.com)
+ * Copyright (C) IBM Corporation, 2005. All rights reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _XOPEN_SOURCE 600
+#define _BSD_SOURCE
+#define _DEFAULT_SOURCE
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <elf.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <dirent.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "../../firmware_memmap.h"
+#include "../../crashdump.h"
+#include "kexec-x86.h"
+#include "crashdump-x86.h"
+#include "../../kexec-xen.h"
+#include "x86-linux-setup.h"
+#include <x86/x86-linux.h>
+
+extern struct arch_options_t arch_options;
+
+static int get_kernel_page_offset(struct kexec_info *UNUSED(info),
+ struct crash_elf_info *elf_info)
+{
+
+ if (elf_info->machine == EM_X86_64) {
+ /* get_kernel_vaddr_and_size will override this */
+ elf_info->page_offset = X86_64_PAGE_OFFSET;
+ }
+ else if (elf_info->machine == EM_386) {
+ elf_info->page_offset = X86_PAGE_OFFSET;
+ }
+
+ return 0;
+}
+
+#define X86_64_KERN_VADDR_ALIGN 0x100000 /* 1MB */
+
+/* Read kernel physical load addr from the file returned by proc_iomem()
+ * (Kernel Code) and store in kexec_info */
+static int get_kernel_paddr(struct kexec_info *UNUSED(info),
+ struct crash_elf_info *elf_info)
+{
+ uint64_t start;
+
+ if (elf_info->machine != EM_X86_64)
+ return 0;
+
+ if (xen_present()) /* Kernel not entity mapped under Xen */
+ return 0;
+
+ if (parse_iomem_single("Kernel code\n", &start, NULL) == 0) {
+ elf_info->kern_paddr_start = start;
+ dbgprintf("kernel load physical addr start = 0x%016Lx\n",
+ (unsigned long long)start);
+ return 0;
+ }
+
+ fprintf(stderr, "Cannot determine kernel physical load addr\n");
+ return -1;
+}
+
+/* Retrieve info regarding virtual address kernel has been compiled for and
+ * size of the kernel from /proc/kcore. Current /proc/kcore parsing from
+ * from kexec-tools fails because of malformed elf notes. A kernel patch has
+ * been submitted. For the folks using older kernels, this function
+ * hard codes the values to remain backward compatible. Once things stablize
+ * we should get rid of backward compatible code. */
+
+static int get_kernel_vaddr_and_size(struct kexec_info *UNUSED(info),
+ struct crash_elf_info *elf_info)
+{
+ int result;
+ const char kcore[] = "/proc/kcore";
+ char *buf;
+ struct mem_ehdr ehdr;
+ struct mem_phdr *phdr, *end_phdr;
+ int align;
+ off_t size;
+ uint32_t elf_flags = 0;
+ uint64_t stext_sym;
+ const unsigned long long pud_mask = ~((1 << 30) - 1);
+ unsigned long long vaddr, lowest_vaddr = 0;
+
+ if (elf_info->machine != EM_X86_64)
+ return 0;
+
+ if (xen_present()) /* Kernel not entity mapped under Xen */
+ return 0;
+
+ align = getpagesize();
+ buf = slurp_file_len(kcore, KCORE_ELF_HEADERS_SIZE, &size);
+ if (!buf) {
+ fprintf(stderr, "Cannot read %s: %s\n", kcore, strerror(errno));
+ return -1;
+ }
+
+ /* Don't perform checks to make sure stated phdrs and shdrs are
+ * actually present in the core file. It is not practical
+ * to read the GB size file into a user space buffer, Given the
+ * fact that we don't use any info from that.
+ */
+ elf_flags |= ELF_SKIP_FILESZ_CHECK;
+ result = build_elf_core_info(buf, size, &ehdr, elf_flags);
+ if (result < 0) {
+ /* Perhaps KCORE_ELF_HEADERS_SIZE is too small? */
+ fprintf(stderr, "ELF core (kcore) parse failed\n");
+ return -1;
+ }
+
+ end_phdr = &ehdr.e_phdr[ehdr.e_phnum];
+
+ /* Search for the real PAGE_OFFSET when KASLR memory randomization
+ * is enabled */
+ for(phdr = ehdr.e_phdr; phdr != end_phdr; phdr++) {
+ if (phdr->p_type == PT_LOAD) {
+ vaddr = phdr->p_vaddr & pud_mask;
+ if (lowest_vaddr == 0 || lowest_vaddr > vaddr)
+ lowest_vaddr = vaddr;
+ }
+ }
+ if (lowest_vaddr != 0)
+ elf_info->page_offset = lowest_vaddr;
+
+ /* Traverse through the Elf headers and find the region where
+ * _stext symbol is located in. That's where kernel is mapped */
+ stext_sym = get_kernel_sym("_stext");
+ for(phdr = ehdr.e_phdr; stext_sym && phdr != end_phdr; phdr++) {
+ if (phdr->p_type == PT_LOAD) {
+ unsigned long long saddr = phdr->p_vaddr;
+ unsigned long long eaddr = phdr->p_vaddr + phdr->p_memsz;
+ unsigned long long size;
+
+ /* Look for kernel text mapping header. */
+ if (saddr <= stext_sym && eaddr > stext_sym) {
+ saddr = _ALIGN_DOWN(saddr, X86_64_KERN_VADDR_ALIGN);
+ elf_info->kern_vaddr_start = saddr;
+ size = eaddr - saddr;
+ /* Align size to page size boundary. */
+ size = _ALIGN(size, align);
+ elf_info->kern_size = size;
+ dbgprintf("kernel vaddr = 0x%llx size = 0x%llx\n",
+ saddr, size);
+ return 0;
+ }
+ }
+ }
+
+ /* If failed to retrieve kernel text mapping through
+ * /proc/kallsyms, Traverse through the Elf headers again and
+ * find the region where kernel is mapped using hard-coded
+ * kernel mapping boundries */
+ for(phdr = ehdr.e_phdr; phdr != end_phdr; phdr++) {
+ if (phdr->p_type == PT_LOAD) {
+ unsigned long long saddr = phdr->p_vaddr;
+ unsigned long long eaddr = phdr->p_vaddr + phdr->p_memsz;
+ unsigned long long size;
+
+ /* Look for kernel text mapping header. */
+ if ((saddr >= X86_64__START_KERNEL_map) &&
+ (eaddr <= X86_64__START_KERNEL_map + X86_64_KERNEL_TEXT_SIZE)) {
+ saddr = _ALIGN_DOWN(saddr, X86_64_KERN_VADDR_ALIGN);
+ elf_info->kern_vaddr_start = saddr;
+ size = eaddr - saddr;
+ /* Align size to page size boundary. */
+ size = _ALIGN(size, align);
+ elf_info->kern_size = size;
+ dbgprintf("kernel vaddr = 0x%llx size = 0x%llx\n",
+ saddr, size);
+ return 0;
+ }
+ }
+ }
+
+ fprintf(stderr, "Can't find kernel text map area from kcore\n");
+ return -1;
+}
+
+/* Forward Declaration. */
+static void segregate_lowmem_region(int *nr_ranges, unsigned long lowmem_limit);
+static int exclude_region(int *nr_ranges, uint64_t start, uint64_t end);
+
+/* Stores a sorted list of RAM memory ranges for which to create elf headers.
+ * A separate program header is created for backup region */
+static struct memory_range crash_memory_range[CRASH_MAX_MEMORY_RANGES];
+
+/* Memory region reserved for storing panic kernel and other data. */
+#define CRASH_RESERVED_MEM_NR 8
+static struct memory_range crash_reserved_mem[CRASH_RESERVED_MEM_NR];
+static int crash_reserved_mem_nr;
+
+/* Reads the appropriate file and retrieves the SYSTEM RAM regions for whom to
+ * create Elf headers. Keeping it separate from get_memory_ranges() as
+ * requirements are different in the case of normal kexec and crashdumps.
+ *
+ * Normal kexec needs to look at all of available physical memory irrespective
+ * of the fact how much of it is being used by currently running kernel.
+ * Crashdumps need to have access to memory regions actually being used by
+ * running kernel. Expecting a different file/data structure than /proc/iomem
+ * to look into down the line. May be something like /proc/kernelmem or may
+ * be zone data structures exported from kernel.
+ */
+static int get_crash_memory_ranges(struct memory_range **range, int *ranges,
+ int kexec_flags, unsigned long lowmem_limit)
+{
+ const char *iomem = proc_iomem();
+ int memory_ranges = 0, gart = 0, i;
+ char line[MAX_LINE];
+ FILE *fp;
+ unsigned long long start, end;
+ uint64_t gart_start = 0, gart_end = 0;
+
+ fp = fopen(iomem, "r");
+ if (!fp) {
+ fprintf(stderr, "Cannot open %s: %s\n",
+ iomem, strerror(errno));
+ return -1;
+ }
+
+ while(fgets(line, sizeof(line), fp) != 0) {
+ char *str;
+ int type, consumed, count;
+
+ if (memory_ranges >= CRASH_MAX_MEMORY_RANGES)
+ break;
+ count = sscanf(line, "%llx-%llx : %n",
+ &start, &end, &consumed);
+ if (count != 2)
+ continue;
+ str = line + consumed;
+ dbgprintf("%016llx-%016llx : %s",
+ start, end, str);
+ /*
+ * We want to dump any System RAM -- memory regions currently
+ * used by the kernel. In the usual case, this is "System RAM"
+ * on the top level. However, we can also have "System RAM
+ * (virtio_mem)" below virtio devices or "System RAM (kmem)"
+ * below "Persistent Memory".
+ */
+ if (strstr(str, "System RAM")) {
+ type = RANGE_RAM;
+ } else if (memcmp(str, "ACPI Tables\n", 12) == 0) {
+ /*
+ * ACPI Tables area need to be passed to new
+ * kernel with appropriate memmap= option. This
+ * is needed so that x86_64 kernel creates linear
+ * mapping for this region which is required for
+ * initializing acpi tables in second kernel.
+ */
+ type = RANGE_ACPI;
+ } else if(memcmp(str,"ACPI Non-volatile Storage\n",26) == 0 ) {
+ type = RANGE_ACPI_NVS;
+ } else if(memcmp(str,"Persistent Memory (legacy)\n",27) == 0 ) {
+ type = RANGE_PRAM;
+ } else if(memcmp(str,"Persistent Memory\n",18) == 0 ) {
+ type = RANGE_PMEM;
+ } else if(memcmp(str,"reserved\n",9) == 0 ) {
+ type = RANGE_RESERVED;
+ } else if (memcmp(str, "Reserved\n", 9) == 0) {
+ type = RANGE_RESERVED;
+ } else if (memcmp(str, "GART\n", 5) == 0) {
+ gart_start = start;
+ gart_end = end;
+ gart = 1;
+ continue;
+ } else {
+ continue;
+ }
+
+ crash_memory_range[memory_ranges].start = start;
+ crash_memory_range[memory_ranges].end = end;
+ crash_memory_range[memory_ranges].type = type;
+
+ segregate_lowmem_region(&memory_ranges, lowmem_limit);
+
+ memory_ranges++;
+ }
+ fclose(fp);
+ if (kexec_flags & KEXEC_PRESERVE_CONTEXT) {
+ for (i = 0; i < memory_ranges; i++) {
+ if (crash_memory_range[i].end > 0x0009ffff) {
+ crash_reserved_mem[0].start = \
+ crash_memory_range[i].start;
+ break;
+ }
+ }
+ if (crash_reserved_mem[0].start >= mem_max) {
+ fprintf(stderr, "Too small mem_max: 0x%llx.\n",
+ mem_max);
+ return -1;
+ }
+ crash_reserved_mem[0].end = mem_max;
+ crash_reserved_mem[0].type = RANGE_RAM;
+ crash_reserved_mem_nr = 1;
+ }
+
+ for (i = 0; i < crash_reserved_mem_nr; i++)
+ if (exclude_region(&memory_ranges, crash_reserved_mem[i].start,
+ crash_reserved_mem[i].end) < 0)
+ return -1;
+
+ if (gart) {
+ /* exclude GART region if the system has one */
+ if (exclude_region(&memory_ranges, gart_start, gart_end) < 0)
+ return -1;
+ }
+ *range = crash_memory_range;
+ *ranges = memory_ranges;
+
+ return 0;
+}
+
+#ifdef HAVE_LIBXENCTRL
+static int get_crash_memory_ranges_xen(struct memory_range **range,
+ int *ranges, unsigned long lowmem_limit)
+{
+ struct e820entry *e820entries;
+ int j, rc, ret = -1;
+ unsigned int i;
+ xc_interface *xc;
+
+ xc = xc_interface_open(NULL, NULL, 0);
+
+ if (!xc) {
+ fprintf(stderr, "%s: Failed to open Xen control interface\n", __func__);
+ return -1;
+ }
+
+ e820entries = xmalloc(sizeof(*e820entries) * CRASH_MAX_MEMORY_RANGES);
+
+ rc = xc_get_machine_memory_map(xc, e820entries, CRASH_MAX_MEMORY_RANGES);
+
+ if (rc < 0) {
+ fprintf(stderr, "%s: xc_get_machine_memory_map: %s\n", __func__, strerror(-rc));
+ goto err;
+ }
+
+ for (i = 0, j = 0; i < rc && j < CRASH_MAX_MEMORY_RANGES; ++i, ++j) {
+ crash_memory_range[j].start = e820entries[i].addr;
+ crash_memory_range[j].end = e820entries[i].addr + e820entries[i].size - 1;
+ crash_memory_range[j].type = xen_e820_to_kexec_type(e820entries[i].type);
+ segregate_lowmem_region(&j, lowmem_limit);
+ }
+
+ *range = crash_memory_range;
+ *ranges = j;
+
+ qsort(*range, *ranges, sizeof(struct memory_range), compare_ranges);
+
+ for (i = 0; i < crash_reserved_mem_nr; i++)
+ if (exclude_region(ranges, crash_reserved_mem[i].start,
+ crash_reserved_mem[i].end) < 0)
+ goto err;
+
+ ret = 0;
+
+err:
+ xc_interface_close(xc);
+ free(e820entries);
+ return ret;
+}
+#else
+static int get_crash_memory_ranges_xen(struct memory_range **range,
+ int *ranges, unsigned long lowmem_limit)
+{
+ return 0;
+}
+#endif /* HAVE_LIBXENCTRL */
+
+static void segregate_lowmem_region(int *nr_ranges, unsigned long lowmem_limit)
+{
+ unsigned long long end, start;
+ unsigned type;
+
+ start = crash_memory_range[*nr_ranges].start;
+ end = crash_memory_range[*nr_ranges].end;
+ type = crash_memory_range[*nr_ranges].type;
+
+ if (!(lowmem_limit && lowmem_limit > start && lowmem_limit < end))
+ return;
+
+ crash_memory_range[*nr_ranges].end = lowmem_limit - 1;
+
+ if (*nr_ranges >= CRASH_MAX_MEMORY_RANGES - 1)
+ return;
+
+ ++*nr_ranges;
+
+ crash_memory_range[*nr_ranges].start = lowmem_limit;
+ crash_memory_range[*nr_ranges].end = end;
+ crash_memory_range[*nr_ranges].type = type;
+}
+
+/* Removes crash reserve region from list of memory chunks for whom elf program
+ * headers have to be created. Assuming crash reserve region to be a single
+ * continuous area fully contained inside one of the memory chunks */
+static int exclude_region(int *nr_ranges, uint64_t start, uint64_t end)
+{
+ int i, j, tidx = -1;
+ struct memory_range temp_region = {0, 0, 0};
+
+
+ for (i = 0; i < (*nr_ranges); i++) {
+ unsigned long long mstart, mend;
+ mstart = crash_memory_range[i].start;
+ mend = crash_memory_range[i].end;
+ if (start < mend && end > mstart) {
+ if (start != mstart && end != mend) {
+ /* Split memory region */
+ crash_memory_range[i].end = start - 1;
+ temp_region.start = end + 1;
+ temp_region.end = mend;
+ temp_region.type = RANGE_RAM;
+ tidx = i+1;
+ } else if (start != mstart)
+ crash_memory_range[i].end = start - 1;
+ else
+ crash_memory_range[i].start = end + 1;
+ }
+ }
+ /* Insert split memory region, if any. */
+ if (tidx >= 0) {
+ if (*nr_ranges == CRASH_MAX_MEMORY_RANGES) {
+ /* No space to insert another element. */
+ fprintf(stderr, "Error: Number of crash memory ranges"
+ " excedeed the max limit\n");
+ return -1;
+ }
+ for (j = (*nr_ranges - 1); j >= tidx; j--)
+ crash_memory_range[j+1] = crash_memory_range[j];
+ crash_memory_range[tidx] = temp_region;
+ (*nr_ranges)++;
+ }
+ return 0;
+}
+
+/* Adds a segment from list of memory regions which new kernel can use to
+ * boot. Segment start and end should be aligned to 1K boundary. */
+static int add_memmap(struct memory_range *memmap_p, int *nr_memmap,
+ unsigned long long addr, size_t size, int type)
+{
+ int i, j, nr_entries = 0, tidx = 0, align = 1024;
+ unsigned long long mstart, mend;
+
+ /* Shrink to 1KiB alignment if needed. */
+ if (type == RANGE_RAM && ((addr%align) || (size%align))) {
+ unsigned long long end = addr + size;
+
+ printf("%s: RAM chunk %#llx - %#llx unaligned\n", __func__, addr, end);
+ addr = _ALIGN_UP(addr, align);
+ end = _ALIGN_DOWN(end, align);
+ if (addr >= end)
+ return -1;
+ size = end - addr;
+ printf("%s: RAM chunk shrunk to %#llx - %#llx\n", __func__, addr, end);
+ }
+
+ /* Make sure at least one entry in list is free. */
+ for (i = 0; i < CRASH_MAX_MEMMAP_NR; i++) {
+ mstart = memmap_p[i].start;
+ mend = memmap_p[i].end;
+ if (!mstart && !mend)
+ break;
+ else
+ nr_entries++;
+ }
+ if (nr_entries == CRASH_MAX_MEMMAP_NR)
+ return -1;
+
+ for (i = 0; i < CRASH_MAX_MEMMAP_NR; i++) {
+ mstart = memmap_p[i].start;
+ mend = memmap_p[i].end;
+ if (mstart == 0 && mend == 0)
+ break;
+ if (mstart <= (addr+size-1) && mend >=addr)
+ /* Overlapping region. */
+ return -1;
+ else if (addr > mend)
+ tidx = i+1;
+ }
+ /* Insert the memory region. */
+ for (j = nr_entries-1; j >= tidx; j--)
+ memmap_p[j+1] = memmap_p[j];
+ memmap_p[tidx].start = addr;
+ memmap_p[tidx].end = addr + size - 1;
+ memmap_p[tidx].type = type;
+ *nr_memmap = nr_entries + 1;
+
+ dbgprint_mem_range("Memmap after adding segment", memmap_p, *nr_memmap);
+
+ return 0;
+}
+
+/* Removes a segment from list of memory regions which new kernel can use to
+ * boot. Segment start and end should be aligned to 1K boundary. */
+static int delete_memmap(struct memory_range *memmap_p, int *nr_memmap,
+ unsigned long long addr, size_t size)
+{
+ int i, j, nr_entries = 0, tidx = -1, operation = 0, align = 1024;
+ unsigned long long mstart, mend;
+ struct memory_range temp_region;
+
+ /* Do alignment check. */
+ if ((addr%align) || (size%align))
+ return -1;
+
+ /* Make sure at least one entry in list is free. */
+ for (i = 0; i < CRASH_MAX_MEMMAP_NR; i++) {
+ mstart = memmap_p[i].start;
+ mend = memmap_p[i].end;
+ if (!mstart && !mend)
+ break;
+ else
+ nr_entries++;
+ }
+ if (nr_entries == CRASH_MAX_MEMMAP_NR)
+ /* List if full */
+ return -1;
+
+ for (i = 0; i < CRASH_MAX_MEMMAP_NR; i++) {
+ mstart = memmap_p[i].start;
+ mend = memmap_p[i].end;
+ if (mstart == 0 && mend == 0)
+ /* Did not find the segment in the list. */
+ return -1;
+ if (mstart <= addr && mend >= (addr + size - 1)) {
+ if (mstart == addr && mend == (addr + size - 1)) {
+ /* Exact match. Delete region */
+ operation = -1;
+ tidx = i;
+ break;
+ }
+ if (mstart != addr && mend != (addr + size - 1)) {
+ /* Split in two */
+ memmap_p[i].end = addr - 1;
+ temp_region.start = addr + size;
+ temp_region.end = mend;
+ temp_region.type = memmap_p[i].type;
+ operation = 1;
+ tidx = i;
+ break;
+ }
+
+ /* No addition/deletion required. Adjust the existing.*/
+ if (mstart != addr) {
+ memmap_p[i].end = addr - 1;
+ break;
+ } else {
+ memmap_p[i].start = addr + size;
+ break;
+ }
+ }
+ }
+ if ((operation == 1) && tidx >=0) {
+ /* Insert the split memory region. */
+ for (j = nr_entries-1; j > tidx; j--)
+ memmap_p[j+1] = memmap_p[j];
+ memmap_p[tidx+1] = temp_region;
+ *nr_memmap = nr_entries + 1;
+ }
+ if ((operation == -1) && tidx >=0) {
+ /* Delete the exact match memory region. */
+ for (j = i+1; j < CRASH_MAX_MEMMAP_NR; j++)
+ memmap_p[j-1] = memmap_p[j];
+ memmap_p[j-1].start = memmap_p[j-1].end = 0;
+ *nr_memmap = nr_entries - 1;
+ }
+
+ dbgprint_mem_range("Memmap after deleting segment", memmap_p, *nr_memmap);
+
+ return 0;
+}
+
+static void cmdline_add_memmap_internal(char *cmdline, unsigned long startk,
+ unsigned long endk, int type)
+{
+ int cmdlen, len;
+ char str_mmap[256], str_tmp[20];
+
+ strcpy (str_mmap, " memmap=");
+ ultoa((endk-startk), str_tmp);
+ strcat (str_mmap, str_tmp);
+
+ if (type == RANGE_RAM)
+ strcat (str_mmap, "K@");
+ else if (type == RANGE_RESERVED)
+ strcat (str_mmap, "K$");
+ else if (type == RANGE_ACPI || type == RANGE_ACPI_NVS)
+ strcat (str_mmap, "K#");
+ else if (type == RANGE_PRAM)
+ strcat (str_mmap, "K!");
+
+ ultoa(startk, str_tmp);
+ strcat (str_mmap, str_tmp);
+ strcat (str_mmap, "K");
+ len = strlen(str_mmap);
+ cmdlen = strlen(cmdline) + len;
+ if (cmdlen > (COMMAND_LINE_SIZE - 1))
+ die("Command line overflow\n");
+ strcat(cmdline, str_mmap);
+}
+
+/* Adds the appropriate memmap= options to command line, indicating the
+ * memory regions the new kernel can use to boot into. */
+static int cmdline_add_memmap(char *cmdline, struct memory_range *memmap_p)
+{
+ int i, cmdlen, len;
+ unsigned long min_sizek = 100;
+ char str_mmap[256];
+
+ /* Exact map */
+ strcpy(str_mmap, " memmap=exactmap");
+ len = strlen(str_mmap);
+ cmdlen = strlen(cmdline) + len;
+ if (cmdlen > (COMMAND_LINE_SIZE - 1))
+ die("Command line overflow\n");
+ strcat(cmdline, str_mmap);
+
+ for (i = 0; i < CRASH_MAX_MEMMAP_NR; i++) {
+ unsigned long startk, endk, type;
+
+ startk = memmap_p[i].start/1024;
+ endk = (memmap_p[i].end + 1)/1024;
+ type = memmap_p[i].type;
+
+ /* Only adding memory regions of RAM and ACPI and Persistent Mem */
+ if (type != RANGE_RAM &&
+ type != RANGE_ACPI &&
+ type != RANGE_ACPI_NVS &&
+ type != RANGE_PRAM)
+ continue;
+
+ if (type == RANGE_ACPI || type == RANGE_ACPI_NVS)
+ endk = _ALIGN_UP(memmap_p[i].end + 1, 1024)/1024;
+
+ if (!startk && !endk)
+ /* All regions traversed. */
+ break;
+
+ /* A RAM region is not worth adding if region size < 100K.
+ * It eats up precious command line length. */
+ if (type == RANGE_RAM && (endk - startk) < min_sizek)
+ continue;
+ /* And do not add e820 reserved region either */
+ cmdline_add_memmap_internal(cmdline, startk, endk, type);
+ }
+
+ dbgprintf("Command line after adding memmap\n");
+ dbgprintf("%s\n", cmdline);
+
+ return 0;
+}
+
+/* Adds the elfcorehdr= command line parameter to command line. */
+static int cmdline_add_elfcorehdr(char *cmdline, unsigned long addr)
+{
+ int cmdlen, len, align = 1024;
+ char str[30], *ptr;
+
+ /* Passing in elfcorehdr=xxxK format. Saves space required in cmdline.
+ * Ensure 1K alignment*/
+ if (addr%align)
+ return -1;
+ addr = addr/align;
+ ptr = str;
+ strcpy(str, " elfcorehdr=");
+ ptr += strlen(str);
+ ultoa(addr, ptr);
+ strcat(str, "K");
+ len = strlen(str);
+ cmdlen = strlen(cmdline) + len;
+ if (cmdlen > (COMMAND_LINE_SIZE - 1))
+ die("Command line overflow\n");
+ strcat(cmdline, str);
+
+ dbgprintf("Command line after adding elfcorehdr\n");
+ dbgprintf("%s\n", cmdline);
+
+ return 0;
+}
+
+
+/*
+ * This routine is specific to i386 architecture to maintain the
+ * backward compatibility, other architectures can use the per
+ * cpu version get_crash_notes_per_cpu() directly.
+ */
+static int get_crash_notes(int cpu, uint64_t *addr, uint64_t *len)
+{
+ const char *crash_notes = "/sys/kernel/crash_notes";
+ char line[MAX_LINE];
+ FILE *fp;
+ unsigned long vaddr;
+ int count;
+
+ fp = fopen(crash_notes, "r");
+ if (fp) {
+ if (fgets(line, sizeof(line), fp) != 0) {
+ count = sscanf(line, "%lx", &vaddr);
+ if (count != 1)
+ die("Cannot parse %s: %s\n", crash_notes,
+ strerror(errno));
+ }
+
+ *addr = x86__pa(vaddr + (cpu * MAX_NOTE_BYTES));
+ *len = MAX_NOTE_BYTES;
+
+ dbgprintf("crash_notes addr = %llx\n",
+ (unsigned long long)*addr);
+
+ fclose(fp);
+ return 0;
+ } else
+ return get_crash_notes_per_cpu(cpu, addr, len);
+}
+
+static enum coretype get_core_type(struct crash_elf_info *elf_info,
+ struct memory_range *range, int ranges)
+{
+ if ((elf_info->machine) == EM_X86_64)
+ return CORE_TYPE_ELF64;
+ else {
+ /* fall back to default */
+ if (ranges == 0)
+ return CORE_TYPE_ELF64;
+
+ if (range[ranges - 1].end > 0xFFFFFFFFUL)
+ return CORE_TYPE_ELF64;
+ else
+ return CORE_TYPE_ELF32;
+ }
+}
+
+static int sysfs_efi_runtime_map_exist(void)
+{
+ DIR *dir;
+
+ dir = opendir("/sys/firmware/efi/runtime-map");
+ if (!dir)
+ return 0;
+
+ closedir(dir);
+ return 1;
+}
+
+/* Appends 'acpi_rsdp=' commandline for efi boot crash dump */
+static void cmdline_add_efi(char *cmdline)
+{
+ uint64_t acpi_rsdp;
+ char acpi_rsdp_buf[MAX_LINE];
+
+ acpi_rsdp = get_acpi_rsdp();
+
+ if (!acpi_rsdp)
+ return;
+
+ sprintf(acpi_rsdp_buf, " acpi_rsdp=0x%lx", acpi_rsdp);
+ if (strlen(cmdline) + strlen(acpi_rsdp_buf) > (COMMAND_LINE_SIZE - 1))
+ die("Command line overflow\n");
+
+ strcat(cmdline, acpi_rsdp_buf);
+}
+
+static void get_backup_area(struct kexec_info *info,
+ struct memory_range *range, int ranges)
+{
+ int i;
+
+ /* Look for first 640 KiB RAM region. */
+ for (i = 0; i < ranges; ++i) {
+ if (range[i].type != RANGE_RAM || range[i].end > 0xa0000)
+ continue;
+
+ info->backup_src_start = range[i].start;
+ info->backup_src_size = range[i].end - range[i].start + 1;
+
+ dbgprintf("%s: %016llx-%016llx : System RAM\n", __func__,
+ range[i].start, range[i].end);
+
+ return;
+ }
+
+ /* First 640 KiB RAM region not found. Assume defaults. */
+ info->backup_src_start = BACKUP_SRC_START;
+ info->backup_src_size = BACKUP_SRC_END - BACKUP_SRC_START + 1;
+}
+
+/* Loads additional segments in case of a panic kernel is being loaded.
+ * One segment for backup region, another segment for storing elf headers
+ * for crash memory image.
+ */
+int load_crashdump_segments(struct kexec_info *info, char* mod_cmdline,
+ unsigned long max_addr, unsigned long min_base)
+{
+ void *tmp;
+ unsigned long sz, bufsz, memsz, elfcorehdr;
+ int nr_ranges = 0, nr_memmap = 0, align = 1024, i;
+ struct memory_range *mem_range, *memmap_p;
+ struct crash_elf_info elf_info;
+ unsigned kexec_arch;
+
+ memset(&elf_info, 0x0, sizeof(elf_info));
+
+ /* Constant parts of the elf_info */
+ memset(&elf_info, 0, sizeof(elf_info));
+ elf_info.data = ELFDATA2LSB;
+
+ /* Get the architecture of the running kernel */
+ kexec_arch = info->kexec_flags & KEXEC_ARCH_MASK;
+ if (kexec_arch == KEXEC_ARCH_DEFAULT)
+ kexec_arch = KEXEC_ARCH_NATIVE;
+
+ /* Get the elf architecture of the running kernel */
+ switch(kexec_arch) {
+ case KEXEC_ARCH_X86_64:
+ elf_info.machine = EM_X86_64;
+ break;
+ case KEXEC_ARCH_386:
+ elf_info.machine = EM_386;
+ elf_info.lowmem_limit = X86_MAXMEM;
+ elf_info.get_note_info = get_crash_notes;
+ break;
+ default:
+ fprintf(stderr, "unsupported crashdump architecture: %04x\n",
+ kexec_arch);
+ return -1;
+ }
+
+ if (xen_present()) {
+ if (get_crash_memory_ranges_xen(&mem_range, &nr_ranges,
+ elf_info.lowmem_limit) < 0)
+ return -1;
+ } else
+ if (get_crash_memory_ranges(&mem_range, &nr_ranges,
+ info->kexec_flags,
+ elf_info.lowmem_limit) < 0)
+ return -1;
+
+ get_backup_area(info, mem_range, nr_ranges);
+
+ dbgprint_mem_range("CRASH MEMORY RANGES", mem_range, nr_ranges);
+
+ /*
+ * if the core type has not been set on command line, set it here
+ * automatically
+ */
+ if (arch_options.core_header_type == CORE_TYPE_UNDEF) {
+ arch_options.core_header_type =
+ get_core_type(&elf_info, mem_range, nr_ranges);
+ }
+ /* Get the elf class... */
+ elf_info.class = ELFCLASS32;
+ if (arch_options.core_header_type == CORE_TYPE_ELF64) {
+ elf_info.class = ELFCLASS64;
+ }
+
+ if (get_kernel_page_offset(info, &elf_info))
+ return -1;
+
+ if (get_kernel_paddr(info, &elf_info))
+ return -1;
+
+ if (get_kernel_vaddr_and_size(info, &elf_info))
+ return -1;
+
+ /* Memory regions which panic kernel can safely use to boot into */
+ sz = (sizeof(struct memory_range) * CRASH_MAX_MEMMAP_NR);
+ memmap_p = xmalloc(sz);
+ memset(memmap_p, 0, sz);
+ add_memmap(memmap_p, &nr_memmap, info->backup_src_start, info->backup_src_size, RANGE_RAM);
+ for (i = 0; i < crash_reserved_mem_nr; i++) {
+ sz = crash_reserved_mem[i].end - crash_reserved_mem[i].start +1;
+ if (add_memmap(memmap_p, &nr_memmap, crash_reserved_mem[i].start,
+ sz, RANGE_RAM) < 0) {
+ free(memmap_p);
+ return ENOCRASHKERNEL;
+ }
+ }
+
+ /* Create a backup region segment to store backup data*/
+ if (!(info->kexec_flags & KEXEC_PRESERVE_CONTEXT)) {
+ sz = _ALIGN(info->backup_src_size, align);
+ tmp = xmalloc(sz);
+ memset(tmp, 0, sz);
+ info->backup_start = add_buffer(info, tmp, sz, sz, align,
+ 0, max_addr, -1);
+ dbgprintf("Created backup segment at 0x%lx\n",
+ info->backup_start);
+ if (delete_memmap(memmap_p, &nr_memmap, info->backup_start, sz) < 0) {
+ free(tmp);
+ free(memmap_p);
+ return EFAILED;
+ }
+ }
+
+ /* Create elf header segment and store crash image data. */
+ if (arch_options.core_header_type == CORE_TYPE_ELF64) {
+ if (crash_create_elf64_headers(info, &elf_info, mem_range,
+ nr_ranges, &tmp, &bufsz,
+ ELF_CORE_HEADER_ALIGN) < 0) {
+ free(memmap_p);
+ return EFAILED;
+ }
+ }
+ else {
+ if (crash_create_elf32_headers(info, &elf_info, mem_range,
+ nr_ranges, &tmp, &bufsz,
+ ELF_CORE_HEADER_ALIGN) < 0) {
+ free(memmap_p);
+ return EFAILED;
+ }
+ }
+ /* the size of the elf headers allocated is returned in 'bufsz' */
+
+ /* Hack: With some ld versions (GNU ld version 2.14.90.0.4 20030523),
+ * vmlinux program headers show a gap of two pages between bss segment
+ * and data segment but effectively kernel considers it as bss segment
+ * and overwrites the any data placed there. Hence bloat the memsz of
+ * elf core header segment to 16K to avoid being placed in such gaps.
+ * This is a makeshift solution until it is fixed in kernel.
+ */
+ if (bufsz < (16*1024)) {
+ /* bufsize is big enough for all the PT_NOTE's and PT_LOAD's */
+ memsz = 16*1024;
+ /* memsz will be the size of the memory hole we look for */
+ } else {
+ memsz = bufsz;
+ }
+ elfcorehdr = add_buffer(info, tmp, bufsz, memsz, align, min_base,
+ max_addr, -1);
+ dbgprintf("Created elf header segment at 0x%lx\n", elfcorehdr);
+ if (delete_memmap(memmap_p, &nr_memmap, elfcorehdr, memsz) < 0) {
+ free(memmap_p);
+ return -1;
+ }
+ if (!bzImage_support_efi_boot || arch_options.noefi ||
+ !sysfs_efi_runtime_map_exist())
+ cmdline_add_efi(mod_cmdline);
+ cmdline_add_elfcorehdr(mod_cmdline, elfcorehdr);
+
+ /* Inform second kernel about the presence of ACPI tables. */
+ for (i = 0; i < nr_ranges; i++) {
+ unsigned long start, end, size, type;
+ if ( !( mem_range[i].type == RANGE_ACPI
+ || mem_range[i].type == RANGE_ACPI_NVS
+ || mem_range[i].type == RANGE_RESERVED
+ || mem_range[i].type == RANGE_PMEM
+ || mem_range[i].type == RANGE_PRAM))
+ continue;
+ start = mem_range[i].start;
+ end = mem_range[i].end;
+ type = mem_range[i].type;
+ size = end - start + 1;
+ add_memmap(memmap_p, &nr_memmap, start, size, type);
+ }
+
+ if (arch_options.pass_memmap_cmdline)
+ cmdline_add_memmap(mod_cmdline, memmap_p);
+
+ /* Store 2nd kernel boot memory ranges for later reference in
+ * x86-setup-linux.c: setup_linux_system_parameters() */
+ info->crash_range = memmap_p;
+ info->nr_crash_ranges = nr_memmap;
+
+ return 0;
+}
+
+/* On x86, the kernel may make a low reservation in addition to the
+ * normal reservation. However, the kernel refuses to load the panic
+ * kernel to low memory, so always choose the highest range.
+ */
+int get_crash_kernel_load_range(uint64_t *start, uint64_t *end)
+{
+ if (!crash_reserved_mem_nr)
+ return -1;
+
+ *start = crash_reserved_mem[crash_reserved_mem_nr - 1].start;
+ *end = crash_reserved_mem[crash_reserved_mem_nr - 1].end;
+
+ return 0;
+}
+
+static int crashkernel_mem_callback(void *UNUSED(data), int nr,
+ char *UNUSED(str),
+ unsigned long long base,
+ unsigned long long length)
+{
+ if (nr >= CRASH_RESERVED_MEM_NR)
+ return 1;
+
+ crash_reserved_mem[nr].start = base;
+ crash_reserved_mem[nr].end = base + length - 1;
+ crash_reserved_mem[nr].type = RANGE_RAM;
+ return 0;
+}
+
+int is_crashkernel_mem_reserved(void)
+{
+ int ret;
+
+ if (xen_present()) {
+ uint64_t start, end;
+
+ ret = xen_get_crashkernel_region(&start, &end);
+ if (ret < 0)
+ return 0;
+
+ crash_reserved_mem[0].start = start;
+ crash_reserved_mem[0].end = end;
+ crash_reserved_mem[0].type = RANGE_RAM;
+ crash_reserved_mem_nr = 1;
+ } else {
+ ret = kexec_iomem_for_each_line("Crash kernel\n",
+ crashkernel_mem_callback, NULL);
+ crash_reserved_mem_nr = ret;
+ }
+
+ return !!crash_reserved_mem_nr;
+}
diff --git a/kexec/arch/i386/crashdump-x86.h b/kexec/arch/i386/crashdump-x86.h
new file mode 100644
index 0000000..479a549
--- /dev/null
+++ b/kexec/arch/i386/crashdump-x86.h
@@ -0,0 +1,33 @@
+#ifndef CRASHDUMP_X86_H
+#define CRASHDUMP_X86_H
+
+struct kexec_info;
+int load_crashdump_segments(struct kexec_info *info, char *mod_cmdline,
+ unsigned long max_addr, unsigned long min_base);
+
+#define X86_PAGE_OFFSET 0xc0000000
+#define x86__pa(x) ((unsigned long)(x)-X86_PAGE_OFFSET)
+
+#define X86__VMALLOC_RESERVE (128 << 20)
+#define X86_MAXMEM (-X86_PAGE_OFFSET-X86__VMALLOC_RESERVE)
+
+#define X86_64__START_KERNEL_map 0xffffffff80000000ULL
+#define X86_64_PAGE_OFFSET_PRE_2_6_27 0xffff810000000000ULL
+#define X86_64_PAGE_OFFSET_PRE_4_20_0 0xffff880000000000ULL
+#define X86_64_PAGE_OFFSET 0xffff888000000000ULL
+
+#define X86_64_MAXMEM 0x3fffffffffffUL
+
+/* Kernel text size */
+#define X86_64_KERNEL_TEXT_SIZE (512UL*1024*1024)
+
+#define CRASH_MAX_MEMMAP_NR 1024
+
+#define CRASH_MAX_MEMORY_RANGES 32768
+
+/* Backup Region, First 640K of System RAM. */
+#define BACKUP_SRC_START 0x00000000
+#define BACKUP_SRC_END 0x0009ffff
+#define BACKUP_SRC_SIZE (BACKUP_SRC_END - BACKUP_SRC_START + 1)
+
+#endif /* CRASHDUMP_X86_H */
diff --git a/kexec/arch/i386/include/arch/options.h b/kexec/arch/i386/include/arch/options.h
new file mode 100644
index 0000000..89e0a95
--- /dev/null
+++ b/kexec/arch/i386/include/arch/options.h
@@ -0,0 +1,86 @@
+#ifndef KEXEC_ARCH_I386_OPTIONS_H
+#define KEXEC_ARCH_I386_OPTIONS_H
+
+/*
+ *************************************************************************
+ * NOTE NOTE NOTE
+ * This file is included for i386 builds *and* x86_64 builds (which build
+ * both x86_64 and i386 loaders).
+ * It contains the combined set of options used by i386 and x86_64.
+ *************************************************************************
+ */
+
+#define OPT_RESET_VGA (OPT_MAX+0)
+#define OPT_SERIAL (OPT_MAX+1)
+#define OPT_SERIAL_BAUD (OPT_MAX+2)
+#define OPT_CONSOLE_VGA (OPT_MAX+3)
+#define OPT_CONSOLE_SERIAL (OPT_MAX+4)
+#define OPT_ELF32_CORE (OPT_MAX+5)
+#define OPT_ELF64_CORE (OPT_MAX+6)
+#define OPT_ARCH_MAX (OPT_MAX+7)
+
+#define OPT_APPEND (OPT_ARCH_MAX+0)
+#define OPT_REUSE_CMDLINE (OPT_ARCH_MAX+1)
+#define OPT_RAMDISK (OPT_ARCH_MAX+2)
+#define OPT_ARGS_ELF (OPT_ARCH_MAX+3)
+#define OPT_ARGS_LINUX (OPT_ARCH_MAX+4)
+#define OPT_ARGS_NONE (OPT_ARCH_MAX+5)
+#define OPT_CL (OPT_ARCH_MAX+6)
+#define OPT_MOD (OPT_ARCH_MAX+7)
+#define OPT_VGA (OPT_ARCH_MAX+8)
+#define OPT_REAL_MODE (OPT_ARCH_MAX+9)
+#define OPT_ENTRY_32BIT (OPT_ARCH_MAX+10)
+#define OPT_PASS_MEMMAP_CMDLINE (OPT_ARCH_MAX+11)
+#define OPT_NOEFI (OPT_ARCH_MAX+12)
+#define OPT_REUSE_VIDEO_TYPE (OPT_ARCH_MAX+13)
+#define OPT_DTB (OPT_ARCH_MAX+14)
+
+/* Options relevant to the architecture (excluding loader-specific ones): */
+#define KEXEC_ARCH_OPTIONS \
+ KEXEC_OPTIONS \
+ { "reset-vga", 0, 0, OPT_RESET_VGA }, \
+ { "serial", 1, 0, OPT_SERIAL }, \
+ { "serial-baud", 1, 0, OPT_SERIAL_BAUD }, \
+ { "console-vga", 0, 0, OPT_CONSOLE_VGA }, \
+ { "console-serial", 0, 0, OPT_CONSOLE_SERIAL }, \
+ { "elf32-core-headers", 0, 0, OPT_ELF32_CORE }, \
+ { "elf64-core-headers", 0, 0, OPT_ELF64_CORE }, \
+ { "pass-memmap-cmdline", 0, 0, OPT_PASS_MEMMAP_CMDLINE }, \
+ { "noefi", 0, 0, OPT_NOEFI}, \
+ { "reuse-video-type", 0, 0, OPT_REUSE_VIDEO_TYPE }, \
+
+#define KEXEC_ARCH_OPT_STR KEXEC_OPT_STR ""
+
+/* The following two #defines list ALL of the options added by all of the
+ * architecture's loaders.
+ * o main() uses this complete list to scan for its options, ignoring
+ * arch-specific/loader-specific ones.
+ * o Then, arch_process_options() uses this complete list to scan for its
+ * options, ignoring general/loader-specific ones.
+ * o Then, the file_type[n].load re-scans for options, using
+ * KEXEC_ARCH_OPTIONS plus its loader-specific options subset.
+ * Any unrecognised options cause an error here.
+ *
+ * This is done so that main()'s/arch_process_options()'s getopt_long() calls
+ * don't choose a kernel filename from random arguments to options they don't
+ * recognise -- as they now recognise (if not act upon) all possible options.
+ */
+#define KEXEC_ALL_OPTIONS \
+ KEXEC_ARCH_OPTIONS \
+ { "command-line", 1, NULL, OPT_APPEND }, \
+ { "append", 1, NULL, OPT_APPEND }, \
+ { "reuse-cmdline", 0, NULL, OPT_REUSE_CMDLINE }, \
+ { "initrd", 1, NULL, OPT_RAMDISK }, \
+ { "ramdisk", 1, NULL, OPT_RAMDISK }, \
+ { "args-elf", 0, NULL, OPT_ARGS_ELF }, \
+ { "args-linux", 0, NULL, OPT_ARGS_LINUX }, \
+ { "args-none", 0, NULL, OPT_ARGS_NONE }, \
+ { "module", 1, 0, OPT_MOD }, \
+ { "real-mode", 0, NULL, OPT_REAL_MODE }, \
+ { "entry-32bit", 0, NULL, OPT_ENTRY_32BIT }, \
+ { "dtb", 1, NULL, OPT_DTB },
+
+#define KEXEC_ALL_OPT_STR KEXEC_ARCH_OPT_STR
+
+#endif /* KEXEC_ARCH_I386_OPTIONS_H */
+
diff --git a/kexec/arch/i386/kexec-beoboot-x86.c b/kexec/arch/i386/kexec-beoboot-x86.c
new file mode 100644
index 0000000..d949ab8
--- /dev/null
+++ b/kexec/arch/i386/kexec-beoboot-x86.c
@@ -0,0 +1,132 @@
+/*------------------------------------------------------------ -*- C -*-
+ * Eric Biederman <ebiederman@xmission.com>
+ * Erik Arjan Hendriks <hendriks@lanl.gov>
+ *
+ * 14 December 2004
+ * This file is a derivative of the beoboot image loader, modified
+ * to work with kexec.
+ *
+ * This version is derivative from the orignal mkbootimg.c which is
+ * Copyright (C) 2000 Scyld Computing Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+
+ *
+ *--------------------------------------------------------------------*/
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <getopt.h>
+#include <x86/x86-linux.h>
+#include <boot/beoboot.h>
+#include "../../kexec.h"
+#include "kexec-x86.h"
+#include <arch/options.h>
+
+int beoboot_probe(const char *buf, off_t len)
+{
+ struct beoboot_header bb_header;
+ const char *cmdline, *kernel;
+ int result;
+ if ((uintmax_t)len < (uintmax_t)sizeof(bb_header)) {
+ return -1;
+ }
+ memcpy(&bb_header, buf, sizeof(bb_header));
+ if (memcmp(bb_header.magic, BEOBOOT_MAGIC, 4) != 0) {
+ return -1;
+ }
+ if (bb_header.arch != BEOBOOT_ARCH) {
+ return -1;
+ }
+ /* Make certain a bzImage is packed into there.
+ */
+ cmdline = buf + sizeof(bb_header);
+ kernel = cmdline + bb_header.cmdline_size;
+ result = bzImage_probe(kernel, bb_header.kernel_size);
+
+ return result;
+}
+
+void beoboot_usage(void)
+{
+ printf( " --real-mode Use the kernels real mode entry point.\n"
+ );
+
+ /* No parameters are parsed */
+}
+
+#define SETUP_BASE 0x90000
+#define KERN32_BASE 0x100000 /* 1MB */
+#define INITRD_BASE 0x1000000 /* 16MB */
+
+int beoboot_load(int argc, char **argv, const char *buf, off_t UNUSED(len),
+ struct kexec_info *info)
+{
+ struct beoboot_header bb_header;
+ const char *command_line, *kernel, *initrd;
+
+ int real_mode_entry;
+ int opt;
+ int result;
+
+ /* See options.h -- add any more there, too. */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { "real-mode", 0, 0, OPT_REAL_MODE },
+ { 0, 0, 0, 0 },
+ };
+ static const char short_options[] = KEXEC_ARCH_OPT_STR "";
+
+ /*
+ * Parse the command line arguments
+ */
+ real_mode_entry = 0;
+ while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch(opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX) {
+ break;
+ }
+ case OPT_REAL_MODE:
+ real_mode_entry = 1;
+ break;
+ }
+ }
+
+
+ /*
+ * Parse the file
+ */
+ memcpy(&bb_header, buf, sizeof(bb_header));
+ command_line = buf + sizeof(bb_header);
+ kernel = command_line + bb_header.cmdline_size;
+ initrd = NULL;
+ if (bb_header.flags & BEOBOOT_INITRD_PRESENT) {
+ initrd = kernel + bb_header.kernel_size;
+ }
+
+ result = do_bzImage_load(info,
+ kernel, bb_header.kernel_size,
+ command_line, bb_header.cmdline_size,
+ initrd, bb_header.initrd_size,
+ 0, 0, real_mode_entry);
+
+ return result;
+}
+
diff --git a/kexec/arch/i386/kexec-bzImage.c b/kexec/arch/i386/kexec-bzImage.c
new file mode 100644
index 0000000..1b8f20c
--- /dev/null
+++ b/kexec/arch/i386/kexec-bzImage.c
@@ -0,0 +1,471 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2003-2010 Eric Biederman (ebiederm@xmission.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <elf.h>
+#include <boot/elf_boot.h>
+#include <ip_checksum.h>
+#include <x86/x86-linux.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "kexec-x86.h"
+#include "x86-linux-setup.h"
+#include "crashdump-x86.h"
+#include <arch/options.h>
+
+static const int probe_debug = 0;
+int bzImage_support_efi_boot = 0;
+
+int bzImage_probe(const char *buf, off_t len)
+{
+ const struct x86_linux_header *header;
+ if ((uintmax_t)len < (uintmax_t)(2 * 512)) {
+ if (probe_debug) {
+ fprintf(stderr, "File is too short to be a bzImage!\n");
+ }
+ return -1;
+ }
+ header = (const struct x86_linux_header *)buf;
+ if (memcmp(header->header_magic, "HdrS", 4) != 0) {
+ if (probe_debug) {
+ fprintf(stderr, "Not a bzImage\n");
+ }
+ return -1;
+ }
+ if (header->boot_sector_magic != 0xAA55) {
+ if (probe_debug) {
+ fprintf(stderr, "No x86 boot sector present\n");
+ }
+ /* No x86 boot sector present */
+ return -1;
+ }
+ if (header->protocol_version < 0x0200) {
+ if (probe_debug) {
+ fprintf(stderr, "Must be at least protocol version 2.00\n");
+ }
+ /* Must be at least protocol version 2.00 */
+ return -1;
+ }
+ if ((header->loadflags & 1) == 0) {
+ if (probe_debug) {
+ fprintf(stderr, "zImage not a bzImage\n");
+ }
+ /* Not a bzImage */
+ return -1;
+ }
+ /* I've got a bzImage */
+ if (probe_debug) {
+ fprintf(stderr, "It's a bzImage\n");
+ }
+ return 0;
+}
+
+
+void bzImage_usage(void)
+{
+ printf( " --real-mode Use the kernels real mode entry point.\n"
+ " --command-line=STRING Set the kernel command line to STRING.\n"
+ " --append=STRING Set the kernel command line to STRING.\n"
+ " --reuse-cmdline Use kernel command line from running system.\n"
+ " --initrd=FILE Use FILE as the kernel's initial ramdisk.\n"
+ " --ramdisk=FILE Use FILE as the kernel's initial ramdisk.\n"
+ " --dtb=FILE Use FILE as devicetree.\n"
+ );
+
+}
+
+int do_bzImage_load(struct kexec_info *info,
+ const char *kernel, off_t kernel_len,
+ const char *command_line, off_t command_line_len,
+ const char *initrd, off_t initrd_len,
+ const char *dtb, off_t dtb_len,
+ int real_mode_entry)
+{
+ struct x86_linux_header setup_header;
+ struct x86_linux_param_header *real_mode;
+ int setup_sects;
+ size_t size;
+ int kern16_size;
+ unsigned long setup_base, setup_size;
+ struct entry32_regs regs32;
+ struct entry16_regs regs16;
+ unsigned int relocatable_kernel = 0;
+ unsigned long kernel32_load_addr;
+ char *modified_cmdline;
+ unsigned long cmdline_end;
+ unsigned long kern16_size_needed;
+ unsigned long heap_size = 0;
+
+ /*
+ * Find out about the file I am about to load.
+ */
+ if ((uintmax_t)kernel_len < (uintmax_t)(2 * 512)) {
+ return -1;
+ }
+ memcpy(&setup_header, kernel, sizeof(setup_header));
+ setup_sects = setup_header.setup_sects;
+ if (setup_sects == 0) {
+ setup_sects = 4;
+ }
+
+ kern16_size = (setup_sects +1) *512;
+ if (kernel_len < kern16_size) {
+ fprintf(stderr, "BzImage truncated?\n");
+ return -1;
+ }
+
+ if (setup_header.protocol_version >= 0x0206) {
+ if ((uintmax_t)command_line_len >
+ (uintmax_t)setup_header.cmdline_size) {
+ dbgprintf("Kernel command line too long for kernel!\n");
+ return -1;
+ }
+ } else {
+ if (command_line_len > 255) {
+ dbgprintf("WARNING: This kernel may only support 255 byte command lines\n");
+ }
+ }
+
+ if (setup_header.protocol_version >= 0x0205) {
+ relocatable_kernel = setup_header.relocatable_kernel;
+ dbgprintf("bzImage is relocatable\n");
+ }
+
+ /* Can't use bzImage for crash dump purposes with real mode entry */
+ if((info->kexec_flags & KEXEC_ON_CRASH) && real_mode_entry) {
+ fprintf(stderr, "Can't use bzImage for crash dump purposes"
+ " with real mode entry\n");
+ return -1;
+ }
+
+ if((info->kexec_flags & KEXEC_ON_CRASH) && !relocatable_kernel) {
+ fprintf(stderr, "BzImage is not relocatable. Can't be used"
+ " as capture kernel.\n");
+ return -1;
+ }
+
+ /* Need to append some command line parameters internally in case of
+ * taking crash dumps.
+ */
+ if (info->kexec_flags & (KEXEC_ON_CRASH | KEXEC_PRESERVE_CONTEXT)) {
+ modified_cmdline = xmalloc(COMMAND_LINE_SIZE);
+ memset((void *)modified_cmdline, 0, COMMAND_LINE_SIZE);
+ if (command_line) {
+ strncpy(modified_cmdline, command_line,
+ COMMAND_LINE_SIZE);
+ modified_cmdline[COMMAND_LINE_SIZE - 1] = '\0';
+ }
+
+ /* If panic kernel is being loaded, additional segments need
+ * to be created. load_crashdump_segments will take care of
+ * loading the segments as high in memory as possible, hence
+ * in turn as away as possible from kernel to avoid being
+ * stomped by the kernel.
+ */
+ if (load_crashdump_segments(info, modified_cmdline, -1, 0) < 0)
+ return -1;
+
+ /* Use new command line buffer */
+ command_line = modified_cmdline;
+ command_line_len = strlen(command_line) +1;
+ }
+
+ /* Load the trampoline. This must load at a higher address
+ * than the argument/parameter segment or the kernel will stomp
+ * it's gdt.
+ *
+ * x86_64 purgatory code has got relocations type R_X86_64_32S
+ * that means purgatory got to be loaded within first 2G otherwise
+ * overflow takes place while applying relocations.
+ */
+ if (!real_mode_entry && relocatable_kernel)
+ elf_rel_build_load(info, &info->rhdr, purgatory, purgatory_size,
+ 0x3000, 0x7fffffff, -1, 0);
+ else
+ elf_rel_build_load(info, &info->rhdr, purgatory, purgatory_size,
+ 0x3000, 640*1024, -1, 0);
+ dbgprintf("Loaded purgatory at addr 0x%lx\n", info->rhdr.rel_addr);
+
+ /* The argument/parameter segment */
+ if (real_mode_entry) {
+ /* need to include size for bss and heap etc */
+ if (setup_header.protocol_version >= 0x0201)
+ kern16_size_needed = setup_header.heap_end_ptr;
+ else
+ kern16_size_needed = kern16_size + 8192; /* bss */
+ if (kern16_size_needed < kern16_size)
+ kern16_size_needed = kern16_size;
+ if (kern16_size_needed > 0xfffc)
+ die("kern16_size_needed is more then 64k\n");
+ heap_size = 0xfffc - kern16_size_needed; /* less 64k */
+ heap_size = _ALIGN_DOWN(heap_size, 0x200);
+ kern16_size_needed += heap_size;
+ } else {
+ kern16_size_needed = kern16_size;
+ /* need to bigger than size of struct bootparams */
+ if (kern16_size_needed < 4096)
+ kern16_size_needed = 4096;
+ }
+ setup_size = kern16_size_needed + command_line_len +
+ PURGATORY_CMDLINE_SIZE;
+ real_mode = xmalloc(setup_size);
+ memset(real_mode, 0, setup_size);
+ if (!real_mode_entry) {
+ unsigned long setup_header_size = kernel[0x201] + 0x202 - 0x1f1;
+
+ /* only copy setup_header */
+ if (setup_header_size > 0x7f)
+ setup_header_size = 0x7f;
+ memcpy((unsigned char *)real_mode + 0x1f1, kernel + 0x1f1,
+ setup_header_size);
+ } else {
+ /* copy setup code and setup_header */
+ memcpy(real_mode, kernel, kern16_size);
+ }
+
+ if (info->kexec_flags & (KEXEC_ON_CRASH | KEXEC_PRESERVE_CONTEXT)) {
+ /* If using bzImage for capture kernel, then we will not be
+ * executing real mode code. setup segment can be loaded
+ * anywhere as we will be just reading command line.
+ */
+ setup_base = add_buffer(info, real_mode, setup_size, setup_size,
+ 16, 0x3000, -1, -1);
+ }
+ else if (real_mode->protocol_version >= 0x0200) {
+ /* Careful setup_base must be greater than 8K */
+ setup_base = add_buffer(info, real_mode, setup_size, setup_size,
+ 16, 0x3000, 640*1024, 1);
+ } else {
+ add_segment(info, real_mode, setup_size, SETUP_BASE, setup_size);
+ setup_base = SETUP_BASE;
+ }
+ dbgprintf("Loaded real-mode code and command line at 0x%lx\n",
+ setup_base);
+
+ /* Verify purgatory loads higher than the parameters */
+ if (info->rhdr.rel_addr < setup_base) {
+ die("Could not put setup code above the kernel parameters\n");
+ }
+
+ /* The main kernel segment */
+ size = kernel_len - kern16_size;
+
+ if (real_mode->protocol_version >=0x0205 && relocatable_kernel) {
+ /* Relocatable bzImage */
+ unsigned long kern_align = real_mode->kernel_alignment;
+ unsigned long kernel32_max_addr = DEFAULT_BZIMAGE_ADDR_MAX;
+
+ if (kernel32_max_addr > real_mode->initrd_addr_max)
+ kernel32_max_addr = real_mode->initrd_addr_max;
+
+ kernel32_load_addr = add_buffer(info, kernel + kern16_size,
+ size, size, kern_align,
+ 0x100000, kernel32_max_addr,
+ 1);
+ }
+ else {
+ kernel32_load_addr = KERN32_BASE;
+ add_segment(info, kernel + kern16_size, size,
+ kernel32_load_addr, size);
+ }
+
+ dbgprintf("Loaded 32bit kernel at 0x%lx\n", kernel32_load_addr);
+
+ /* Tell the kernel what is going on */
+ setup_linux_bootloader_parameters(info, real_mode, setup_base,
+ kern16_size_needed, command_line, command_line_len,
+ initrd, initrd_len);
+
+ if (real_mode_entry && real_mode->protocol_version >= 0x0201) {
+ real_mode->loader_flags |= 0x80; /* CAN_USE_HEAP */
+ real_mode->heap_end_ptr += heap_size - 0x200; /*stack*/
+ }
+
+ /* Get the initial register values */
+ if (real_mode_entry)
+ elf_rel_get_symbol(&info->rhdr, "entry16_regs",
+ &regs16, sizeof(regs16));
+
+ /*
+ * Initialize the 32bit start information.
+ */
+ regs32.eax = 0; /* unused */
+ regs32.ebx = 0; /* 0 == boot not AP processor start */
+ regs32.ecx = 0; /* unused */
+ regs32.edx = 0; /* unused */
+ regs32.esi = setup_base; /* kernel parameters */
+ regs32.edi = 0; /* unused */
+ regs32.esp = elf_rel_get_addr(&info->rhdr, "stack_end"); /* stack, unused */
+ regs32.ebp = 0; /* unused */
+ regs32.eip = kernel32_load_addr; /* kernel entry point */
+
+ /*
+ * Initialize the 16bit start information.
+ */
+ if (real_mode_entry) {
+ regs16.ds = regs16.es = regs16.fs = regs16.gs = setup_base >> 4;
+ regs16.cs = regs16.ds + 0x20;
+ regs16.ip = 0;
+ /* XXX: Documentation/i386/boot.txt says 'ss' must equal 'ds' */
+ regs16.ss = (elf_rel_get_addr(&info->rhdr, "stack_end") - 64*1024) >> 4;
+ /* XXX: Documentation/i386/boot.txt says 'sp' must equal heap_end */
+ regs16.esp = 0xFFFC;
+
+ printf("Starting the kernel in real mode\n");
+ regs32.eip = elf_rel_get_addr(&info->rhdr, "entry16");
+ real_mode->kernel_start = kernel32_load_addr;
+ }
+ if (real_mode_entry && kexec_debug) {
+ unsigned long entry16_debug, pre32, first32;
+ uint32_t old_first32;
+ /* Find the location of the symbols */
+ entry16_debug = elf_rel_get_addr(&info->rhdr, "entry16_debug");
+ pre32 = elf_rel_get_addr(&info->rhdr, "entry16_debug_pre32");
+ first32 = elf_rel_get_addr(&info->rhdr, "entry16_debug_first32");
+
+ /* Hook all of the linux kernel hooks */
+ real_mode->rmode_switch_cs = entry16_debug >> 4;
+ real_mode->rmode_switch_ip = pre32 - entry16_debug;
+ old_first32 = real_mode->kernel_start;
+ real_mode->kernel_start = first32;
+ elf_rel_set_symbol(&info->rhdr, "entry16_debug_old_first32",
+ &old_first32, sizeof(old_first32));
+
+ regs32.eip = entry16_debug;
+ }
+ if (real_mode_entry) {
+ elf_rel_set_symbol(&info->rhdr, "entry16_regs",
+ &regs16, sizeof(regs16));
+ elf_rel_set_symbol(&info->rhdr, "entry16_debug_regs",
+ &regs16, sizeof(regs16));
+ }
+ elf_rel_set_symbol(&info->rhdr, "entry32_regs", &regs32, sizeof(regs32));
+ cmdline_end = setup_base + kern16_size_needed + command_line_len - 1;
+ elf_rel_set_symbol(&info->rhdr, "cmdline_end", &cmdline_end,
+ sizeof(unsigned long));
+
+ /* Fill in the information BIOS calls would normally provide. */
+ if (!real_mode_entry) {
+ setup_linux_system_parameters(info, real_mode);
+ }
+
+ if (dtb) {
+ setup_linux_dtb(info, real_mode, dtb, dtb_len);
+ }
+
+ return 0;
+}
+
+int bzImage_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ char *command_line = NULL;
+ char *tmp_cmdline = NULL;
+ const char *ramdisk, *append = NULL, *dtb;
+ char *ramdisk_buf;
+ off_t ramdisk_length;
+ int command_line_len;
+ int real_mode_entry;
+ int opt;
+ int result;
+ char *dtb_buf;
+ off_t dtb_length;
+
+ /* See options.h -- add any more there, too. */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { "command-line", 1, 0, OPT_APPEND },
+ { "append", 1, 0, OPT_APPEND },
+ { "reuse-cmdline", 0, 0, OPT_REUSE_CMDLINE },
+ { "initrd", 1, 0, OPT_RAMDISK },
+ { "ramdisk", 1, 0, OPT_RAMDISK },
+ { "real-mode", 0, 0, OPT_REAL_MODE },
+ { "dtb", 1, 0, OPT_DTB },
+ { 0, 0, 0, 0 },
+ };
+ static const char short_options[] = KEXEC_ARCH_OPT_STR "d";
+
+ real_mode_entry = 0;
+ ramdisk = 0;
+ ramdisk_length = 0;
+ dtb = 0;
+ dtb_length = 0;
+ while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch(opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX) {
+ break;
+ }
+ case OPT_APPEND:
+ append = optarg;
+ break;
+ case OPT_REUSE_CMDLINE:
+ tmp_cmdline = get_command_line();
+ break;
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+ case OPT_REAL_MODE:
+ real_mode_entry = 1;
+ break;
+ case OPT_DTB:
+ dtb = optarg;
+ break;
+ }
+ }
+ command_line = concat_cmdline(tmp_cmdline, append);
+ if (tmp_cmdline) {
+ free(tmp_cmdline);
+ }
+ command_line_len = 0;
+ if (command_line) {
+ command_line_len = strlen(command_line) +1;
+ } else {
+ command_line = strdup("\0");
+ command_line_len = 1;
+ }
+ ramdisk_buf = 0;
+ if (ramdisk) {
+ ramdisk_buf = slurp_file(ramdisk, &ramdisk_length);
+ }
+ dtb_buf = 0;
+ if (dtb) {
+ dtb_buf = slurp_file(dtb, &dtb_length);
+ }
+ result = do_bzImage_load(info,
+ buf, len,
+ command_line, command_line_len,
+ ramdisk_buf, ramdisk_length,
+ dtb_buf, dtb_length,
+ real_mode_entry);
+
+ free(command_line);
+ return result;
+}
diff --git a/kexec/arch/i386/kexec-elf-rel-x86.c b/kexec/arch/i386/kexec-elf-rel-x86.c
new file mode 100644
index 0000000..55a214e
--- /dev/null
+++ b/kexec/arch/i386/kexec-elf-rel-x86.c
@@ -0,0 +1,36 @@
+#include <stdio.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+
+int machine_verify_elf_rel(struct mem_ehdr *ehdr)
+{
+ if (ehdr->ei_data != ELFDATA2LSB) {
+ return 0;
+ }
+ if (ehdr->ei_class != ELFCLASS32) {
+ return 0;
+ }
+ if ((ehdr->e_machine != EM_386) && (ehdr->e_machine != EM_486))
+ {
+ return 0;
+ }
+ return 1;
+}
+
+void machine_apply_elf_rel(struct mem_ehdr *UNUSED(ehdr),
+ struct mem_sym *UNUSED(sym), unsigned long r_type, void *location,
+ unsigned long address, unsigned long value)
+{
+ switch(r_type) {
+ case R_386_32:
+ *((uint32_t *)location) += value;
+ break;
+ case R_386_PC32:
+ *((uint32_t *)location) += value - address;
+ break;
+ default:
+ die("Unknown rel relocation: %lu\n", r_type);
+ break;
+ }
+}
diff --git a/kexec/arch/i386/kexec-elf-x86.c b/kexec/arch/i386/kexec-elf-x86.c
new file mode 100644
index 0000000..8eba242
--- /dev/null
+++ b/kexec/arch/i386/kexec-elf-x86.c
@@ -0,0 +1,331 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2003-2005 Eric Biederman (ebiederm@xmission.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _GNU_SOURCE
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <elf.h>
+#include <x86/x86-linux.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-elf-boot.h"
+#include "x86-linux-setup.h"
+#include "kexec-x86.h"
+#include "crashdump-x86.h"
+#include <arch/options.h>
+
+static const int probe_debug = 0;
+
+int elf_x86_any_probe(const char *buf, off_t len, enum coretype arch)
+{
+
+ struct mem_ehdr ehdr;
+ int result;
+ result = build_elf_exec_info(buf, len, &ehdr, 0);
+ if (result < 0) {
+ if (probe_debug) {
+ fprintf(stderr, "Not an ELF executable\n");
+ }
+ goto out;
+ }
+
+ /* Verify the architecuture specific bits */
+ switch (arch) {
+ case CORE_TYPE_ELF32:
+ if ((ehdr.e_machine != EM_386) && (ehdr.e_machine != EM_486)) {
+ if (probe_debug)
+ fprintf(stderr, "Not i386 ELF executable\n");
+ result = -1;
+ goto out;
+ }
+ break;
+
+ case CORE_TYPE_ELF64:
+ if (ehdr.e_machine != EM_X86_64) {
+ if (probe_debug)
+ fprintf(stderr, "Not x86_64 ELF executable\n");
+ result = -1;
+ goto out;
+ }
+ break;
+
+ case CORE_TYPE_UNDEF:
+ default:
+ if (
+ (ehdr.e_machine != EM_386) &&
+ (ehdr.e_machine != EM_486) &&
+ (ehdr.e_machine != EM_X86_64)
+ ) {
+ if (probe_debug)
+ fprintf(stderr, "Not i386 or x86_64 ELF executable\n");
+ result = -1;
+ goto out;
+ }
+ break;
+ }
+
+ result = 0;
+ out:
+ free_elf_info(&ehdr);
+ return result;
+}
+
+int elf_x86_probe(const char *buf, off_t len) {
+ return elf_x86_any_probe(buf, len, CORE_TYPE_ELF32);
+}
+
+void elf_x86_usage(void)
+{
+ printf( " --command-line=STRING Set the kernel command line to STRING\n"
+ " --append=STRING Set the kernel command line to STRING\n"
+ " --reuse-cmdline Use kernel command line from running system.\n"
+ " --initrd=FILE Use FILE as the kernel's initial ramdisk.\n"
+ " --ramdisk=FILE Use FILE as the kernel's initial ramdisk.\n"
+ " --args-linux Pass linux kernel style options\n"
+ " --args-elf Pass elf boot notes\n"
+ );
+
+
+}
+
+int elf_x86_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ struct mem_ehdr ehdr;
+ char *command_line = NULL, *modified_cmdline = NULL;
+ const char *append = NULL;
+ char *tmp_cmdline = NULL;
+ const char *error_msg = NULL;
+ int result;
+ int command_line_len;
+ const char *ramdisk;
+ unsigned long entry, max_addr;
+ int arg_style;
+#define ARG_STYLE_ELF 0
+#define ARG_STYLE_LINUX 1
+#define ARG_STYLE_NONE 2
+ int opt;
+
+ /* See options.h -- add any more there, too. */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { "command-line", 1, NULL, OPT_APPEND },
+ { "append", 1, NULL, OPT_APPEND },
+ { "reuse-cmdline", 0, NULL, OPT_REUSE_CMDLINE },
+ { "initrd", 1, NULL, OPT_RAMDISK },
+ { "ramdisk", 1, NULL, OPT_RAMDISK },
+ { "args-elf", 0, NULL, OPT_ARGS_ELF },
+ { "args-linux", 0, NULL, OPT_ARGS_LINUX },
+ { "args-none", 0, NULL, OPT_ARGS_NONE },
+ { 0, 0, NULL, 0 },
+ };
+
+ static const char short_options[] = KEXEC_OPT_STR "";
+
+ /*
+ * Parse the command line arguments
+ */
+ arg_style = ARG_STYLE_ELF;
+ ramdisk = 0;
+ result = 0;
+ while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch(opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX) {
+ break;
+ }
+ case OPT_APPEND:
+ append = optarg;
+ break;
+ case OPT_REUSE_CMDLINE:
+ tmp_cmdline = get_command_line();
+ break;
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+ case OPT_ARGS_ELF:
+ arg_style = ARG_STYLE_ELF;
+ break;
+ case OPT_ARGS_LINUX:
+ arg_style = ARG_STYLE_LINUX;
+ break;
+ case OPT_ARGS_NONE:
+#ifdef __i386__
+ arg_style = ARG_STYLE_NONE;
+#else
+ die("--args-none only works on arch i386\n");
+#endif
+ break;
+ }
+ }
+ command_line = concat_cmdline(tmp_cmdline, append);
+ if (tmp_cmdline) {
+ free(tmp_cmdline);
+ }
+ command_line_len = 0;
+ if (command_line) {
+ command_line_len = strlen(command_line) +1;
+ } else {
+ command_line = strdup("\0");
+ command_line_len = 1;
+ }
+
+ /* Need to append some command line parameters internally in case of
+ * taking crash dumps.
+ */
+ if (info->kexec_flags & (KEXEC_ON_CRASH|KEXEC_PRESERVE_CONTEXT)) {
+ modified_cmdline = xmalloc(COMMAND_LINE_SIZE);
+ memset((void *)modified_cmdline, 0, COMMAND_LINE_SIZE);
+ if (command_line) {
+ strncpy(modified_cmdline, command_line,
+ COMMAND_LINE_SIZE);
+ modified_cmdline[COMMAND_LINE_SIZE - 1] = '\0';
+ }
+ }
+
+ /* Load the ELF executable */
+ elf_exec_build_load(info, &ehdr, buf, len, 0);
+
+ entry = ehdr.e_entry;
+ max_addr = elf_max_addr(&ehdr);
+
+ /* Do we want arguments? */
+ if (arg_style != ARG_STYLE_NONE) {
+ /* Load the setup code */
+ elf_rel_build_load(info, &info->rhdr, purgatory, purgatory_size,
+ 0, ULONG_MAX, 1, 0);
+ }
+ if (arg_style == ARG_STYLE_NONE) {
+ info->entry = (void *)entry;
+
+ }
+ else if (arg_style == ARG_STYLE_ELF) {
+ unsigned long note_base;
+ struct entry32_regs regs;
+ uint32_t arg1, arg2;
+
+ /* Setup the ELF boot notes */
+ note_base = elf_boot_notes(info, max_addr,
+ command_line, command_line_len);
+
+ /* Initialize the stack arguments */
+ arg2 = 0; /* No return address */
+ arg1 = note_base;
+ elf_rel_set_symbol(&info->rhdr, "stack_arg32_1", &arg1, sizeof(arg1));
+ elf_rel_set_symbol(&info->rhdr, "stack_arg32_2", &arg2, sizeof(arg2));
+
+ /* Initialize the registers */
+ elf_rel_get_symbol(&info->rhdr, "entry32_regs", &regs, sizeof(regs));
+ regs.eip = entry; /* The entry point */
+ regs.esp = elf_rel_get_addr(&info->rhdr, "stack_arg32_2");
+ elf_rel_set_symbol(&info->rhdr, "entry32_regs", &regs, sizeof(regs));
+
+ if (ramdisk) {
+ error_msg = "Ramdisks not supported with generic elf arguments";
+ goto out;
+ }
+ }
+ else if (arg_style == ARG_STYLE_LINUX) {
+ struct x86_linux_faked_param_header *hdr;
+ unsigned long param_base;
+ const char *ramdisk_buf;
+ off_t ramdisk_length;
+ struct entry32_regs regs;
+ int rc = 0;
+
+ /* Get the linux parameter header */
+ hdr = xmalloc(sizeof(*hdr));
+
+ /* Hack: With some ld versions, vmlinux program headers show
+ * a gap of two pages between bss segment and data segment
+ * but effectively kernel considers it as bss segment and
+ * overwrites the any data placed there. Hence bloat the
+ * memsz of parameter segment to 16K to avoid being placed
+ * in such gaps.
+ * This is a makeshift solution until it is fixed in kernel
+ */
+ param_base = add_buffer(info, hdr, sizeof(*hdr), 16*1024,
+ 16, 0, max_addr, 1);
+
+ /* Initialize the parameter header */
+ memset(hdr, 0, sizeof(*hdr));
+ init_linux_parameters(&hdr->hdr);
+
+ /* Add a ramdisk to the current image */
+ ramdisk_buf = NULL;
+ ramdisk_length = 0;
+ if (ramdisk) {
+ ramdisk_buf = slurp_file(ramdisk, &ramdisk_length);
+ }
+
+ /* If panic kernel is being loaded, additional segments need
+ * to be created. */
+ if (info->kexec_flags & (KEXEC_ON_CRASH|KEXEC_PRESERVE_CONTEXT)) {
+ rc = load_crashdump_segments(info, modified_cmdline,
+ max_addr, 0);
+ if (rc < 0) {
+ result = -1;
+ goto out;
+ }
+ /* Use new command line. */
+ free(command_line);
+ command_line = modified_cmdline;
+ command_line_len = strlen(modified_cmdline) + 1;
+ modified_cmdline = NULL;
+ }
+
+ /* Tell the kernel what is going on */
+ setup_linux_bootloader_parameters(info, &hdr->hdr, param_base,
+ offsetof(struct x86_linux_faked_param_header, command_line),
+ command_line, command_line_len,
+ ramdisk_buf, ramdisk_length);
+
+ /* Fill in the information bios calls would usually provide */
+ setup_linux_system_parameters(info, &hdr->hdr);
+
+ /* Initialize the registers */
+ elf_rel_get_symbol(&info->rhdr, "entry32_regs", &regs, sizeof(regs));
+ regs.ebx = 0; /* Bootstrap processor */
+ regs.esi = param_base; /* Pointer to the parameters */
+ regs.eip = entry; /* The entry point */
+ regs.esp = elf_rel_get_addr(&info->rhdr, "stack_end"); /* Stack, unused */
+ elf_rel_set_symbol(&info->rhdr, "entry32_regs", &regs, sizeof(regs));
+ }
+ else {
+ error_msg = "Unknown argument style\n";
+ }
+
+out:
+ free(command_line);
+ free(modified_cmdline);
+ if (error_msg)
+ die("%s", error_msg);
+ return result;
+}
diff --git a/kexec/arch/i386/kexec-mb2-x86.c b/kexec/arch/i386/kexec-mb2-x86.c
new file mode 100644
index 0000000..0d2e93b
--- /dev/null
+++ b/kexec/arch/i386/kexec-mb2-x86.c
@@ -0,0 +1,616 @@
+/*
+ * kexec-mb2-x86.c
+ *
+ * multiboot2 support for kexec to boot xen.
+ *
+ * Copyright (C) 2019 Varad Gautam (vrd at amazon.de), Amazon.com, Inc. or its affiliates.
+ *
+ * Parts based on GNU GRUB, Copyright (C) 2000 Free Software Foundation, Inc
+ * Parts taken from kexec-multiboot-x86.c, Eric Biederman (ebiederm@xmission.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <elf.h>
+#include <boot/elf_boot.h>
+#include <ip_checksum.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "kexec-x86.h"
+#include "../../kexec-syscall.h"
+#include "../../kexec-xen.h"
+#include <arch/options.h>
+
+/* From GNU GRUB */
+#include <x86/multiboot2.h>
+#include <x86/mb_info.h>
+
+/* Framebuffer */
+#include <sys/ioctl.h>
+#include <linux/fb.h>
+
+extern struct arch_options_t arch_options;
+
+/* Static storage */
+static char headerbuf[MULTIBOOT_SEARCH];
+static struct multiboot_header *mbh = NULL;
+struct multiboot2_header_info {
+ struct multiboot_header_tag_information_request *request_tag;
+ struct multiboot_header_tag_address *addr_tag;
+ struct multiboot_header_tag_entry_address *entry_addr_tag;
+ struct multiboot_header_tag_console_flags *console_tag;
+ struct multiboot_header_tag_framebuffer *fb_tag;
+ struct multiboot_header_tag_module_align *mod_align_tag;
+ struct multiboot_header_tag_relocatable *rel_tag;
+} mhi;
+
+#define ALIGN_UP(addr, align) \
+ ((addr + (typeof (addr)) align - 1) & ~((typeof (addr)) align - 1))
+
+int multiboot2_x86_probe(const char *buf, off_t buf_len)
+/* Is it a good idea to try booting this file? */
+{
+ int i, len;
+
+ /* First of all, check that this is an ELF file for either x86 or x86-64 */
+ i = elf_x86_any_probe(buf, buf_len, CORE_TYPE_UNDEF);
+ if (i < 0)
+ return i;
+
+ /* Now look for a multiboot header. */
+ len = MULTIBOOT_SEARCH;
+ if (len > buf_len)
+ len = buf_len;
+
+ memcpy(headerbuf, buf, len);
+ if (len < sizeof(struct multiboot_header)) {
+ /* Short file */
+ return -1;
+ }
+ for (mbh = (struct multiboot_header *) headerbuf;
+ ((char *) mbh <= (char *) headerbuf + len - sizeof(struct multiboot_header));
+ mbh = (struct multiboot_header *) ((char *) mbh + MULTIBOOT_HEADER_ALIGN)) {
+ if (mbh->magic == MULTIBOOT2_HEADER_MAGIC
+ && !((mbh->magic+mbh->architecture+mbh->header_length+mbh->checksum) & 0xffffffff)) {
+ /* Found multiboot header. */
+ return 0;
+ }
+ }
+ /* Not multiboot */
+ return -1;
+}
+
+void multiboot2_x86_usage(void)
+/* Multiboot-specific options */
+{
+ printf(" --command-line=STRING Set the kernel command line to STRING.\n");
+ printf(" --reuse-cmdline Use kernel command line from running system.\n");
+ printf(" --module=\"MOD arg1 arg2...\" Load module MOD with command-line \"arg1...\"\n");
+ printf(" (can be used multiple times).\n");
+}
+
+static size_t
+multiboot2_get_mbi_size(int ranges, int cmdline_size, int modcount, int modcmd_size)
+{
+ size_t mbi_size;
+
+ mbi_size = (2 * sizeof (uint32_t) /* u32 total_size, u32 reserved */
+ + ALIGN_UP (sizeof (struct multiboot_tag_basic_meminfo), MULTIBOOT_TAG_ALIGN)
+ + ALIGN_UP ((sizeof (struct multiboot_tag_mmap)
+ + ranges * sizeof (struct multiboot_mmap_entry)), MULTIBOOT_TAG_ALIGN)
+ + (sizeof (struct multiboot_tag_string)
+ + ALIGN_UP (cmdline_size, MULTIBOOT_TAG_ALIGN))
+ + (sizeof (struct multiboot_tag_string)
+ + ALIGN_UP (strlen(BOOTLOADER " " BOOTLOADER_VERSION) + 1, MULTIBOOT_TAG_ALIGN))
+ + (modcount * sizeof (struct multiboot_tag_module) + modcmd_size))
+ + sizeof (struct multiboot_tag); /* end tag */
+
+ if (mhi.rel_tag)
+ mbi_size += ALIGN_UP (sizeof (struct multiboot_tag_load_base_addr), MULTIBOOT_TAG_ALIGN);
+
+ if (mhi.fb_tag)
+ mbi_size += ALIGN_UP (sizeof (struct multiboot_tag_framebuffer), MULTIBOOT_TAG_ALIGN);
+
+ return mbi_size;
+}
+
+static void multiboot2_read_header_tags(void)
+{
+ struct multiboot_header_tag *tag;
+
+ for (tag = (struct multiboot_header_tag *) (mbh + 1);
+ tag->type != MULTIBOOT_TAG_TYPE_END;
+ tag = (struct multiboot_header_tag *) ((char *) tag + ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN)))
+ {
+ switch (tag->type)
+ {
+ case MULTIBOOT_HEADER_TAG_INFORMATION_REQUEST:
+ {
+ mhi.request_tag = (struct multiboot_header_tag_information_request *) tag;
+ break;
+ }
+ case MULTIBOOT_HEADER_TAG_RELOCATABLE:
+ {
+ mhi.rel_tag = (struct multiboot_header_tag_relocatable *) tag;
+ break;
+ }
+ case MULTIBOOT_HEADER_TAG_ADDRESS:
+ {
+ mhi.addr_tag = (struct multiboot_header_tag_address *) tag;
+ break;
+ }
+ case MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS:
+ {
+ mhi.entry_addr_tag = (struct multiboot_header_tag_entry_address *) tag;
+ break;
+ }
+ case MULTIBOOT_HEADER_TAG_CONSOLE_FLAGS:
+ {
+ mhi.console_tag = (struct multiboot_header_tag_console_flags *) tag;
+ break;
+ }
+ case MULTIBOOT_HEADER_TAG_FRAMEBUFFER:
+ {
+ mhi.fb_tag = (struct multiboot_header_tag_framebuffer *) tag;
+ break;
+ }
+ case MULTIBOOT_HEADER_TAG_MODULE_ALIGN:
+ {
+ mhi.mod_align_tag = (struct multiboot_header_tag_module_align *) tag;
+ break;
+ }
+ case MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS_EFI64:
+ case MULTIBOOT_HEADER_TAG_EFI_BS:
+ /* Ignoring EFI. */
+ break;
+ default:
+ {
+ if (!(tag->flags & MULTIBOOT_HEADER_TAG_OPTIONAL))
+ fprintf(stderr, "unsupported tag: 0x%x", tag->type);
+ break;
+ }
+ }
+ }
+}
+
+struct multiboot_mmap_entry *multiboot_construct_memory_map(struct memory_range *range,
+ int ranges,
+ unsigned long long *mem_lower,
+ unsigned long long *mem_upper)
+{
+ struct multiboot_mmap_entry *entries;
+ int i;
+
+ *mem_lower = *mem_upper = 0;
+ entries = xmalloc(ranges * sizeof(*entries));
+ for (i = 0; i < ranges; i++) {
+ entries[i].addr = range[i].start;
+ entries[i].len = range[i].end - range[i].start + 1;
+
+ if (range[i].type == RANGE_RAM) {
+ entries[i].type = MULTIBOOT_MEMORY_AVAILABLE;
+ /*
+ * Is this the "low" memory? Can't just test
+ * against zero, because Linux protects (and
+ * hides) the first few pages of physical
+ * memory.
+ */
+
+ if ((range[i].start <= 64*1024)
+ && (range[i].end > *mem_lower)) {
+ range[i].start = 0;
+ *mem_lower = range[i].end;
+ }
+ /* Is this the "high" memory? */
+ if ((range[i].start <= 0x100000)
+ && (range[i].end > *mem_upper + 0x100000))
+ *mem_upper = range[i].end - 0x100000;
+ } else if (range[i].type == RANGE_ACPI)
+ entries[i].type = MULTIBOOT_MEMORY_ACPI_RECLAIMABLE;
+ else if (range[i].type == RANGE_ACPI_NVS)
+ entries[i].type = MULTIBOOT_MEMORY_NVS;
+ else if (range[i].type == RANGE_RESERVED)
+ entries[i].type = MULTIBOOT_MEMORY_RESERVED;
+ }
+ return entries;
+}
+
+static uint64_t multiboot2_make_mbi(struct kexec_info *info, char *cmdline, int cmdline_len,
+ unsigned long load_base_addr, void *mbi_buf, size_t mbi_bytes)
+{
+ uint64_t *ptrorig = mbi_buf;
+ struct multiboot_mmap_entry *mmap_entries;
+ unsigned long long mem_lower = 0, mem_upper = 0;
+
+ *ptrorig = mbi_bytes; /* u32 total_size, u32 reserved */
+ ptrorig++;
+
+ mmap_entries = multiboot_construct_memory_map(info->memory_range, info->memory_ranges, &mem_lower, &mem_upper);
+ {
+ struct multiboot_tag_basic_meminfo *tag = (struct multiboot_tag_basic_meminfo *) ptrorig;
+
+ tag->type = MULTIBOOT_TAG_TYPE_BASIC_MEMINFO;
+ tag->size = sizeof (struct multiboot_tag_basic_meminfo);
+ tag->mem_lower = mem_lower >> 10;
+ tag->mem_upper = mem_upper >> 10;
+ ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN) / sizeof (*ptrorig);
+ }
+
+ {
+ struct multiboot_tag_mmap *tag = (struct multiboot_tag_mmap *) ptrorig;
+
+ tag->type = MULTIBOOT_TAG_TYPE_MMAP;
+ tag->size = sizeof(struct multiboot_tag_mmap) + sizeof(struct multiboot_mmap_entry) * info->memory_ranges;
+ tag->entry_size = sizeof(struct multiboot_mmap_entry);
+ tag->entry_version = 0;
+ memcpy(tag->entries, mmap_entries, tag->entry_size * info->memory_ranges);
+ ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN) / sizeof (*ptrorig);
+ }
+
+ if (mhi.rel_tag) {
+ struct multiboot_tag_load_base_addr *tag = (struct multiboot_tag_load_base_addr *) ptrorig;
+
+ tag->type = MULTIBOOT_TAG_TYPE_LOAD_BASE_ADDR;
+ tag->size = sizeof (struct multiboot_tag_load_base_addr);
+ tag->load_base_addr = load_base_addr;
+ ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN) / sizeof (*ptrorig);
+ }
+
+ {
+ struct multiboot_tag_string *tag = (struct multiboot_tag_string *) ptrorig;
+
+ tag->type = MULTIBOOT_TAG_TYPE_CMDLINE;
+ tag->size = sizeof (struct multiboot_tag_string) + cmdline_len;
+ memcpy(tag->string, cmdline, cmdline_len);
+ ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN) / sizeof (*ptrorig);
+ }
+
+ {
+ struct multiboot_tag_string *tag = (struct multiboot_tag_string *) ptrorig;
+
+ tag->type = MULTIBOOT_TAG_TYPE_BOOT_LOADER_NAME;
+ tag->size = sizeof(struct multiboot_tag_string) + strlen(BOOTLOADER " " BOOTLOADER_VERSION) + 1;
+ sprintf(tag->string, "%s", BOOTLOADER " " BOOTLOADER_VERSION);
+ ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN) / sizeof (*ptrorig);
+ }
+
+ if (mhi.fb_tag) {
+ struct multiboot_tag_framebuffer *tag = (struct multiboot_tag_framebuffer *) ptrorig;
+ struct fb_fix_screeninfo info;
+ struct fb_var_screeninfo mode;
+ int fd;
+
+ tag->common.type = MULTIBOOT_TAG_TYPE_FRAMEBUFFER;
+ tag->common.size = sizeof(struct multiboot_tag_framebuffer);
+ /* check if purgatory will reset to standard ega text mode */
+ if (arch_options.reset_vga || arch_options.console_vga) {
+ tag->common.framebuffer_type = MB_FRAMEBUFFER_TYPE_EGA_TEXT;
+ tag->common.framebuffer_addr = 0xb8000;
+ tag->common.framebuffer_pitch = 80*2;
+ tag->common.framebuffer_width = 80;
+ tag->common.framebuffer_height = 25;
+ tag->common.framebuffer_bpp = 16;
+
+ ptrorig += ALIGN_UP (tag->common.size, MULTIBOOT_TAG_ALIGN) / sizeof (*ptrorig);
+ goto out;
+ }
+
+ /* use current graphics framebuffer settings */
+ fd = open("/dev/fb0", O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr, "can't open /dev/fb0: %s\n", strerror(errno));
+ goto out;
+ }
+ if (ioctl(fd, FBIOGET_FSCREENINFO, &info) < 0){
+ fprintf(stderr, "can't get screeninfo: %s\n", strerror(errno));
+ close(fd);
+ goto out;
+ }
+ if (ioctl(fd, FBIOGET_VSCREENINFO, &mode) < 0){
+ fprintf(stderr, "can't get modeinfo: %s\n", strerror(errno));
+ close(fd);
+ goto out;
+ }
+ close(fd);
+
+ if (info.smem_start == 0 || info.smem_len == 0) {
+ fprintf(stderr, "can't get linerar framebuffer address\n");
+ goto out;
+ }
+
+ if (info.type != FB_TYPE_PACKED_PIXELS) {
+ fprintf(stderr, "unsupported framebuffer type\n");
+ goto out;
+ }
+
+ if (info.visual != FB_VISUAL_TRUECOLOR) {
+ fprintf(stderr, "unsupported framebuffer visual\n");
+ goto out;
+ }
+
+ tag->common.framebuffer_type = MB_FRAMEBUFFER_TYPE_RGB;
+ tag->common.framebuffer_addr = info.smem_start;
+ tag->common.framebuffer_pitch = info.line_length;
+ tag->common.framebuffer_width = mode.xres;
+ tag->common.framebuffer_height = mode.yres;
+ tag->common.framebuffer_bpp = mode.bits_per_pixel;
+
+ tag->framebuffer_red_field_position = mode.red.offset;
+ tag->framebuffer_red_mask_size = mode.red.length;
+ tag->framebuffer_green_field_position = mode.green.offset;
+ tag->framebuffer_green_mask_size = mode.green.length;
+ tag->framebuffer_blue_field_position = mode.blue.offset;
+ tag->framebuffer_blue_mask_size = mode.blue.length;
+
+ ptrorig += ALIGN_UP (tag->common.size, MULTIBOOT_TAG_ALIGN) / sizeof (*ptrorig);
+ }
+
+out:
+ return (uint64_t) (uintptr_t) ptrorig;
+}
+
+static uint64_t multiboot2_mbi_add_module(void *mbi_buf, uint64_t mbi_ptr, uint32_t mod_start,
+ uint32_t mod_end, char *mod_clp)
+{
+ struct multiboot_tag_module *tag = (struct multiboot_tag_module *) (uintptr_t) mbi_ptr;
+
+ tag->type = MULTIBOOT_TAG_TYPE_MODULE;
+ tag->size = sizeof(struct multiboot_tag_module) + strlen((char *)(long) mod_clp) + 1;
+ tag->mod_start = mod_start;
+ tag->mod_end = mod_end;
+
+ memcpy(tag->cmdline, (char *)(long) mod_clp, strlen((char *)(long) mod_clp) + 1);
+ mbi_ptr += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN);
+
+ return mbi_ptr;
+}
+
+static uint64_t multiboot2_mbi_end(void *mbi_buf, uint64_t mbi_ptr)
+{
+ struct multiboot_tag *tag = (struct multiboot_tag *) (uintptr_t) mbi_ptr;
+
+ tag->type = MULTIBOOT_TAG_TYPE_END;
+ tag->size = sizeof (struct multiboot_tag);
+ mbi_ptr += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN);
+
+ return mbi_ptr;
+}
+
+static inline int multiboot2_rel_valid(struct multiboot_header_tag_relocatable *rel_tag,
+ uint64_t rel_start, uint64_t rel_end)
+{
+ if (rel_start >= rel_tag->min_addr && rel_end <= rel_tag->max_addr)
+ return 1;
+
+ return 0;
+}
+
+int multiboot2_x86_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ struct mem_ehdr ehdr;
+ void *mbi_buf;
+ size_t mbi_bytes;
+ unsigned long addr;
+ struct entry32_regs regs;
+ char *command_line = NULL, *tmp_cmdline = NULL;
+ int command_line_len;
+ char *imagename, *cp, *append = NULL;;
+ int opt;
+ int modules, mod_command_line_space;
+ uint64_t mbi_ptr;
+ char *mod_clp_base;
+ /* See options.h -- add any more there, too. */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { "command-line", 1, 0, OPT_CL },
+ { "append", 1, 0, OPT_CL },
+ { "reuse-cmdline", 0, 0, OPT_REUSE_CMDLINE },
+ { "module", 1, 0, OPT_MOD },
+ { 0, 0, 0, 0 },
+ };
+ static const char short_options[] = KEXEC_ARCH_OPT_STR "";
+ uint64_t rel_min, rel_max;
+
+ /* Probe for the MB header if it's not already found */
+ if (mbh == NULL && multiboot_x86_probe(buf, len) != 1)
+ {
+ fprintf(stderr, "Cannot find a loadable multiboot2 header.\n");
+ return -1;
+ }
+
+ /* Parse the header tags. */
+ multiboot2_read_header_tags();
+
+ /* Parse the command line */
+ command_line_len = 0;
+ modules = 0;
+ mod_command_line_space = 0;
+ while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1)
+ {
+ switch(opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX) {
+ break;
+ }
+ case OPT_CL:
+ append = optarg;
+ break;
+ case OPT_REUSE_CMDLINE:
+ tmp_cmdline = get_command_line();
+ break;
+ case OPT_MOD:
+ modules++;
+ mod_command_line_space += strlen(optarg) + 1;
+ break;
+ }
+ }
+ imagename = argv[optind];
+
+ /* Final command line = imagename + <OPT_REUSE_CMDLINE> + <OPT_CL> */
+ tmp_cmdline = concat_cmdline(command_line, append);
+ if (command_line) {
+ free(command_line);
+ }
+ command_line = concat_cmdline(imagename, tmp_cmdline);
+ if (tmp_cmdline) {
+ free(tmp_cmdline);
+ }
+
+ if (xen_present() && info->kexec_flags & KEXEC_LIVE_UPDATE ) {
+ if (!mhi.rel_tag) {
+ fprintf(stderr, "Multiboot2 image must be relocatable"
+ "for KEXEC_LIVE_UPDATE.\n");
+ return -1;
+ }
+ cmdline_add_liveupdate(&command_line);
+ }
+
+ command_line_len = strlen(command_line) + 1;
+
+ /* Load the ELF executable */
+ if (mhi.rel_tag) {
+ rel_min = mhi.rel_tag->min_addr;
+ rel_max = mhi.rel_tag->max_addr;
+
+ if (info->kexec_flags & KEXEC_LIVE_UPDATE && xen_present()) {
+ /* TODO also check if elf is xen */
+ /* On a live update, load target xen over the current xen image. */
+ uint64_t xen_start, xen_end;
+
+ xen_get_kexec_range(KEXEC_RANGE_MA_XEN, &xen_start, &xen_end);
+ if (multiboot2_rel_valid(mhi.rel_tag, xen_start, xen_end)) {
+ rel_min = xen_start;
+ } else {
+ fprintf(stderr, "Cannot place Elf into "
+ "KEXEC_RANGE_MA_XEN for KEXEC_LIVE_UPDATE.\n");
+ return -1;
+ }
+ }
+
+ elf_exec_build_load_relocatable(info, &ehdr, buf, len, 0,
+ rel_min, rel_max, mhi.rel_tag->align);
+ } else
+ elf_exec_build_load(info, &ehdr, buf, len, 0);
+
+ if (info->kexec_flags & KEXEC_LIVE_UPDATE && xen_present()) {
+ uint64_t lu_start, lu_end;
+
+ xen_get_kexec_range(7 /* KEXEC_RANGE_MA_LIVEUPDATE */, &lu_start, &lu_end);
+ /* Fit everything else into lu_start-lu_end. First page after lu_start is
+ * reserved for LU breadcrumb. */
+ rel_min = lu_start + 4096;
+ rel_max = lu_end;
+ } else {
+ rel_min = 0x500;
+ rel_max = ULONG_MAX;
+ }
+
+ /* Load the setup code */
+ elf_rel_build_load(info, &info->rhdr, purgatory, purgatory_size,
+ rel_min, rel_max, 1, 0);
+
+ /* Construct information tags. */
+ mbi_bytes = multiboot2_get_mbi_size(info->memory_ranges, command_line_len, modules, mod_command_line_space);
+ mbi_buf = xmalloc(mbi_bytes);
+
+ mbi_ptr = multiboot2_make_mbi(info, command_line, command_line_len, info->rhdr.rel_addr, mbi_buf, mbi_bytes);
+ free(command_line);
+
+ if (info->kexec_flags & KEXEC_LIVE_UPDATE && xen_present()) {
+ if (multiboot2_rel_valid(mhi.rel_tag, rel_min, rel_max)) {
+ /* Shrink the reloc range to fit into LU region for xen. */
+ mhi.rel_tag->min_addr = rel_min;
+ mhi.rel_tag->max_addr = rel_max;
+ } else {
+ fprintf(stderr, "Multiboot2 image cannot be relocated into "
+ "KEXEC_RANGE_MA_LIVEUPDATE for KEXEC_LIVE_UPDATE.\n");
+ return -1;
+ }
+ }
+
+ /* Load modules */
+ if (modules) {
+ char *mod_filename, *mod_command_line, *mod_clp, *buf;
+ off_t mod_size;
+ int i = 0;
+
+ mod_clp_base = xmalloc(mod_command_line_space);
+
+ /* Go back and parse the module command lines */
+ mod_clp = mod_clp_base;
+ optind = opterr = 1;
+ while((opt = getopt_long(argc, argv,
+ short_options, options, 0)) != -1) {
+ if (opt != OPT_MOD) continue;
+
+ /* Split module filename from command line */
+ mod_command_line = mod_filename = optarg;
+ if ((cp = strchr(mod_filename, ' ')) != NULL) {
+ /* See as I discard the 'const' modifier */
+ *cp = '\0';
+ }
+
+ /* Load the module */
+ buf = slurp_decompress_file(mod_filename, &mod_size);
+
+ if (cp != NULL) *cp = ' ';
+
+ /* Pick the next aligned spot to load it in. Always page align. */
+ addr = add_buffer(info, buf, mod_size, mod_size, getpagesize(),
+ rel_min, rel_max, 1);
+
+ /* Add the module command line */
+ sprintf(mod_clp, "%s", mod_command_line);
+
+ mbi_ptr = multiboot2_mbi_add_module(mbi_buf, mbi_ptr, addr, addr + mod_size, mod_clp);
+
+ mod_clp += strlen(mod_clp) + 1;
+ i++;
+ }
+
+ free(mod_clp_base);
+ }
+
+ mbi_ptr = multiboot2_mbi_end(mbi_buf, mbi_ptr);
+
+ if (sort_segments(info) < 0)
+ return -1;
+
+ addr = add_buffer(info, mbi_buf, mbi_bytes, mbi_bytes, 4,
+ rel_min, rel_max, 1);
+
+ elf_rel_get_symbol(&info->rhdr, "entry32_regs", &regs, sizeof(regs));
+ regs.eax = MULTIBOOT2_BOOTLOADER_MAGIC;
+ regs.ebx = addr;
+ regs.eip = ehdr.e_entry;
+ elf_rel_set_symbol(&info->rhdr, "entry32_regs", &regs, sizeof(regs));
+
+ return 0;
+}
diff --git a/kexec/arch/i386/kexec-multiboot-x86.c b/kexec/arch/i386/kexec-multiboot-x86.c
new file mode 100644
index 0000000..33c885a
--- /dev/null
+++ b/kexec/arch/i386/kexec-multiboot-x86.c
@@ -0,0 +1,505 @@
+/*
+ * kexec-multiboot-x86.c
+ *
+ * (partial) multiboot support for kexec. Only supports ELF32
+ * kernels, and a subset of the multiboot info page options
+ * (i.e. enough to boot the Xen hypervisor).
+ *
+ * TODO:
+ * - smarter allocation of new segments
+ * - proper support for the MULTIBOOT_VIDEO_MODE bit
+ *
+ *
+ * Copyright (C) 2003 Tim Deegan (tjd21 at cl.cam.ac.uk)
+ *
+ * Parts based on GNU GRUB, Copyright (C) 2000 Free Software Foundation, Inc
+ * Parts copied from kexec-elf32-x86.c, written by Eric Biederman
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <elf.h>
+#include <boot/elf_boot.h>
+#include <ip_checksum.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "kexec-x86.h"
+#include <arch/options.h>
+
+/* From GNU GRUB */
+#include <x86/mb_header.h>
+#include <x86/mb_info.h>
+
+/* Framebuffer */
+#include <sys/ioctl.h>
+#include <linux/fb.h>
+
+extern struct arch_options_t arch_options;
+
+/* Static storage */
+static char headerbuf[MULTIBOOT_SEARCH];
+static struct multiboot_header *mbh = NULL;
+static off_t mbh_offset = 0;
+
+#define MIN(_x,_y) (((_x)<=(_y))?(_x):(_y))
+
+
+int multiboot_x86_probe(const char *buf, off_t buf_len)
+/* Is it a good idea to try booting this file? */
+{
+ int i, len;
+ /* Now look for a multiboot header in the first 8KB */
+ len = MULTIBOOT_SEARCH;
+ if (len > buf_len) {
+ len = buf_len;
+ }
+ memcpy(headerbuf, buf, len);
+ if (len < 12) {
+ /* Short file */
+ return -1;
+ }
+ for (mbh_offset = 0; mbh_offset <= (len - 12); mbh_offset += 4)
+ {
+ /* Search for a multiboot header */
+ mbh = (struct multiboot_header *)(headerbuf + mbh_offset);
+ if (mbh->magic != MULTIBOOT_MAGIC
+ || ((mbh->magic+mbh->flags+mbh->checksum) & 0xffffffff))
+ {
+ /* Not a multiboot header */
+ continue;
+ }
+ if (mbh->flags & MULTIBOOT_AOUT_KLUDGE) {
+ if (mbh->load_addr & 0xfff) {
+ fprintf(stderr, "multiboot load address not 4k aligned\n");
+ return -1;
+ }
+ if (mbh->load_addr > mbh->header_addr) {
+ fprintf(stderr, "multiboot header address > load address\n");
+ return -1;
+ }
+ if (mbh->load_end_addr < mbh->load_addr) {
+ fprintf(stderr, "multiboot load end address < load address\n");
+ return -1;
+ }
+ if (mbh->bss_end_addr < mbh->load_end_addr) {
+ fprintf(stderr, "multiboot bss end address < load end address\n");
+ return -1;
+ }
+ if (mbh->load_end_addr - mbh->header_addr > buf_len - mbh_offset) {
+ fprintf(stderr, "multiboot file truncated\n");
+ return -1;
+ }
+ if (mbh->entry_addr < mbh->load_addr || mbh->entry_addr >= mbh->load_end_addr) {
+ fprintf(stderr, "multiboot entry out of range\n");
+ return -1;
+ }
+ } else {
+ if ((i=elf_x86_probe(buf, buf_len)) < 0)
+ return i;
+ }
+ if (mbh->flags & MULTIBOOT_UNSUPPORTED) {
+ /* Requires options we don't support */
+ fprintf(stderr,
+ "Found a multiboot header, but it "
+ "requires multiboot options that I\n"
+ "don't understand. Sorry.\n");
+ return -1;
+ }
+ /* Bootable */
+ return 0;
+ }
+ /* Not multiboot */
+ return -1;
+}
+
+
+void multiboot_x86_usage(void)
+/* Multiboot-specific options */
+{
+ printf(" --command-line=STRING Set the kernel command line to STRING.\n");
+ printf(" --reuse-cmdline Use kernel command line from running system.\n");
+ printf(" --module=\"MOD arg1 arg2...\" Load module MOD with command-line \"arg1...\"\n");
+ printf(" (can be used multiple times).\n");
+}
+
+
+static int framebuffer_info(struct multiboot_info *mbi)
+{
+ struct fb_fix_screeninfo info;
+ struct fb_var_screeninfo mode;
+ int fd;
+
+ /* check if purgatory will reset to standard ega text mode */
+ if (arch_options.reset_vga || arch_options.console_vga) {
+ mbi->framebuffer_type = MB_FRAMEBUFFER_TYPE_EGA_TEXT;
+ mbi->framebuffer_addr = 0xb8000;
+ mbi->framebuffer_pitch = 80*2;
+ mbi->framebuffer_width = 80;
+ mbi->framebuffer_height = 25;
+ mbi->framebuffer_bpp = 16;
+
+ mbi->flags |= MB_INFO_FRAMEBUFFER_INFO;
+ return 0;
+ }
+
+ /* use current graphics framebuffer settings */
+ fd = open("/dev/fb0", O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr, "can't open /dev/fb0: %s\n", strerror(errno));
+ return -1;
+ }
+ if (ioctl(fd, FBIOGET_FSCREENINFO, &info) < 0){
+ fprintf(stderr, "can't get screeninfo: %s\n", strerror(errno));
+ close(fd);
+ return -1;
+ }
+ if (ioctl(fd, FBIOGET_VSCREENINFO, &mode) < 0){
+ fprintf(stderr, "can't get modeinfo: %s\n", strerror(errno));
+ close(fd);
+ return -1;
+ }
+ close(fd);
+
+ if (info.smem_start == 0 || info.smem_len == 0) {
+ fprintf(stderr, "can't get linerar framebuffer address\n");
+ return -1;
+ }
+
+ if (info.type != FB_TYPE_PACKED_PIXELS) {
+ fprintf(stderr, "unsupported framebuffer type\n");
+ return -1;
+ }
+
+ if (info.visual != FB_VISUAL_TRUECOLOR) {
+ fprintf(stderr, "unsupported framebuffer visual\n");
+ return -1;
+ }
+
+ mbi->framebuffer_type = MB_FRAMEBUFFER_TYPE_RGB;
+ mbi->framebuffer_addr = info.smem_start;
+ mbi->framebuffer_pitch = info.line_length;
+ mbi->framebuffer_width = mode.xres;
+ mbi->framebuffer_height = mode.yres;
+ mbi->framebuffer_bpp = mode.bits_per_pixel;
+ mbi->framebuffer_red_field_position = mode.red.offset;
+ mbi->framebuffer_red_mask_size = mode.red.length;
+ mbi->framebuffer_green_field_position = mode.green.offset;
+ mbi->framebuffer_green_mask_size = mode.green.length;
+ mbi->framebuffer_blue_field_position = mode.blue.offset;
+ mbi->framebuffer_blue_mask_size = mode.blue.length;
+
+ mbi->flags |= MB_INFO_FRAMEBUFFER_INFO;
+ return 0;
+}
+
+int multiboot_x86_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+/* Marshal up a multiboot-style kernel */
+{
+ struct multiboot_info *mbi;
+ void *mbi_buf;
+ struct mod_list *modp;
+ unsigned long freespace;
+ unsigned long long mem_lower = 0, mem_upper = 0;
+ struct mem_ehdr ehdr;
+ unsigned long mbi_base;
+ struct entry32_regs regs;
+ size_t mbi_bytes, mbi_offset;
+ char *command_line = NULL, *tmp_cmdline = NULL;
+ char *imagename, *cp, *append = NULL;;
+ struct memory_range *range;
+ int ranges;
+ struct AddrRangeDesc *mmap;
+ int command_line_len;
+ int i, result;
+ uint32_t u, entry;
+ int opt;
+ int modules, mod_command_line_space;
+ /* See options.h -- add any more there, too. */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { "command-line", 1, 0, OPT_CL },
+ { "append", 1, 0, OPT_CL },
+ { "reuse-cmdline", 0, 0, OPT_REUSE_CMDLINE },
+ { "module", 1, 0, OPT_MOD },
+ { 0, 0, 0, 0 },
+ };
+ static const char short_options[] = KEXEC_ARCH_OPT_STR "";
+
+ /* Probe for the MB header if it's not already found */
+ if (mbh == NULL && multiboot_x86_probe(buf, len) != 1) {
+ fprintf(stderr, "Cannot find a loadable multiboot header.\n");
+ return -1;
+ }
+
+ /* Parse the command line */
+ command_line_len = 0;
+ modules = 0;
+ mod_command_line_space = 0;
+ result = 0;
+ while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch(opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX) {
+ break;
+ }
+ case OPT_CL:
+ append = optarg;
+ break;
+ case OPT_REUSE_CMDLINE:
+ command_line = get_command_line();
+ break;
+ case OPT_MOD:
+ modules++;
+ mod_command_line_space += strlen(optarg) + 1;
+ break;
+ }
+ }
+ imagename = argv[optind];
+
+ /* Final command line = imagename + <OPT_REUSE_CMDLINE> + <OPT_CL> */
+ tmp_cmdline = concat_cmdline(command_line, append);
+ if (command_line) {
+ free(command_line);
+ }
+ command_line = concat_cmdline(imagename, tmp_cmdline);
+ if (tmp_cmdline) {
+ free(tmp_cmdline);
+ }
+ command_line_len = strlen(command_line) + 1;
+
+ if (mbh->flags & MULTIBOOT_AOUT_KLUDGE) {
+ add_segment(info,
+ buf + (mbh_offset - (mbh->header_addr - mbh->load_addr)),
+ mbh->load_end_addr - mbh->load_addr,
+ mbh->load_addr,
+ mbh->bss_end_addr - mbh->load_addr);
+ entry = mbh->entry_addr;
+ } else {
+ /* Load the ELF executable */
+ elf_exec_build_load(info, &ehdr, buf, len, 0);
+ entry = ehdr.e_entry;
+ }
+
+ /* Load the setup code */
+ elf_rel_build_load(info, &info->rhdr, purgatory, purgatory_size, 0,
+ ULONG_MAX, 1, 0);
+
+ /* The first segment will contain the multiboot headers:
+ * =============
+ * multiboot information (mbi)
+ * -------------
+ * kernel command line
+ * -------------
+ * bootloader name
+ * -------------
+ * module information entries
+ * -------------
+ * module command lines
+ * ==============
+ */
+ mbi_bytes = _ALIGN(sizeof(*mbi) + command_line_len
+ + strlen (BOOTLOADER " " BOOTLOADER_VERSION) + 1, 4);
+ mbi_buf = xmalloc(mbi_bytes);
+ mbi = mbi_buf;
+ memset(mbi, 0, sizeof(*mbi));
+ sprintf(((char *)mbi) + sizeof(*mbi), "%s", command_line);
+ sprintf(((char *)mbi) + sizeof(*mbi) + command_line_len, "%s",
+ BOOTLOADER " " BOOTLOADER_VERSION);
+ mbi->flags = MB_INFO_CMDLINE | MB_INFO_BOOT_LOADER_NAME;
+ /* We'll relocate these to absolute addresses later. For now,
+ * all addresses within the first segment are relative to the
+ * start of the MBI. */
+ mbi->cmdline = sizeof(*mbi);
+ mbi->boot_loader_name = sizeof(*mbi) + command_line_len;
+
+ /* Memory map */
+ range = info->memory_range;
+ ranges = info->memory_ranges;
+ mmap = xmalloc(ranges * sizeof(*mmap));
+ for (i=0; i<ranges; i++) {
+ unsigned long long length;
+ length = range[i].end - range[i].start + 1;
+ /* Translate bzImage mmap to multiboot-speak */
+ mmap[i].size = sizeof(mmap[i]) - 4;
+ mmap[i].base_addr_low = range[i].start & 0xffffffff;
+ mmap[i].base_addr_high = range[i].start >> 32;
+ mmap[i].length_low = length & 0xffffffff;
+ mmap[i].length_high = length >> 32;
+ switch (range[i].type) {
+ case RANGE_RAM:
+ mmap[i].Type = 1; /* RAM */
+ /*
+ * Is this the "low" memory? Can't just test
+ * against zero, because Linux protects (and
+ * hides) the first few pages of physical
+ * memory.
+ */
+
+ if ((range[i].start <= 64*1024)
+ && (range[i].end > mem_lower)) {
+ range[i].start = 0;
+ mem_lower = range[i].end;
+ }
+ /* Is this the "high" memory? */
+ if ((range[i].start <= 0x100000)
+ && (range[i].end > mem_upper + 0x100000))
+ mem_upper = range[i].end - 0x100000;
+ break;
+ case RANGE_ACPI:
+ mmap[i].Type = 3;
+ break;
+ case RANGE_ACPI_NVS:
+ mmap[i].Type = 4;
+ break;
+ case RANGE_RESERVED:
+ default:
+ mmap[i].Type = 2; /* Not RAM (reserved) */
+ }
+ }
+
+ if (mbh->flags & MULTIBOOT_MEMORY_INFO) {
+ /* Provide a copy of the memory map to the kernel */
+
+ mbi->flags |= MB_INFO_MEMORY | MB_INFO_MEM_MAP;
+
+ freespace = add_buffer(info,
+ mmap, ranges * sizeof(*mmap), ranges * sizeof(*mmap),
+ 4, 0, 0xFFFFFFFFUL, 1);
+
+ mbi->mmap_addr = freespace;
+ mbi->mmap_length = ranges * sizeof(*mmap);
+
+ /* For kernels that care naught for fancy memory maps
+ * and just want the size of low and high memory */
+ mbi->mem_lower = MIN(mem_lower>>10, 0xffffffff);
+ mbi->mem_upper = MIN(mem_upper>>10, 0xffffffff);
+
+ /* done */
+ }
+
+ /* Video */
+ if (mbh->flags & MULTIBOOT_VIDEO_MODE) {
+ if (framebuffer_info(mbi) < 0)
+ fprintf(stderr, "not providing framebuffer information.\n");
+ }
+
+ /* Load modules */
+ if (modules) {
+ char *mod_filename, *mod_command_line, *mod_clp, *buf;
+ off_t mod_size;
+
+ /* We'll relocate this to an absolute address later */
+ mbi->mods_addr = mbi_bytes;
+ mbi->mods_count = 0;
+ mbi->flags |= MB_INFO_MODS;
+
+ /* Add room for the module descriptors to the MBI buffer */
+ mbi_bytes += (sizeof(*modp) * modules)
+ + mod_command_line_space;
+ mbi_buf = xrealloc(mbi_buf, mbi_bytes);
+
+ /* mbi might have moved */
+ mbi = mbi_buf;
+ /* module descriptors go in the newly added space */
+ modp = ((void *)mbi) + mbi->mods_addr;
+ /* module command lines go after the descriptors */
+ mod_clp = ((void *)modp) + (sizeof(*modp) * modules);
+
+ /* Go back and parse the module command lines */
+ optind = opterr = 1;
+ while((opt = getopt_long(argc, argv,
+ short_options, options, 0)) != -1) {
+ if (opt != OPT_MOD) continue;
+
+ /* Split module filename from command line */
+ mod_command_line = mod_filename = optarg;
+ if ((cp = strchr(mod_filename, ' ')) != NULL) {
+ /* See as I discard the 'const' modifier */
+ *cp = '\0';
+ }
+
+ /* Load the module */
+ buf = slurp_decompress_file(mod_filename, &mod_size);
+
+ if (cp != NULL) *cp = ' ';
+
+ /* Pick the next aligned spot to load it in */
+ freespace = add_buffer(info,
+ buf, mod_size, mod_size,
+ getpagesize(), 0, 0xffffffffUL, 1);
+
+ /* Add the module command line */
+ sprintf(mod_clp, "%s", mod_command_line);
+
+ modp->mod_start = freespace;
+ modp->mod_end = freespace + mod_size;
+ modp->cmdline = (void *)mod_clp - (void *)mbi;
+ modp->pad = 0;
+
+ /* Done */
+ mbi->mods_count++;
+ mod_clp += strlen(mod_clp) + 1;
+ modp++;
+ }
+ }
+
+ /* Find a place for the MBI to live */
+ if (sort_segments(info) < 0) {
+ result = -1;
+ goto out;
+ }
+ mbi_base = add_buffer(info,
+ mbi_buf, mbi_bytes, mbi_bytes, 4, 0, 0xFFFFFFFFUL, 1);
+
+ /* Relocate offsets in the MBI to absolute addresses */
+ mbi_offset = mbi_base;
+ modp = ((void *)mbi) + mbi->mods_addr;
+ for (u = 0; u < mbi->mods_count; u++) {
+ modp[u].cmdline += mbi_offset;
+ }
+ mbi->mods_addr += mbi_offset;
+ mbi->cmdline += mbi_offset;
+ mbi->boot_loader_name += mbi_offset;
+
+ /* Specify the initial CPU state and copy the setup code */
+ elf_rel_get_symbol(&info->rhdr, "entry32_regs", &regs, sizeof(regs));
+ regs.eax = 0x2BADB002;
+ regs.ebx = mbi_offset;
+ regs.eip = entry;
+ elf_rel_set_symbol(&info->rhdr, "entry32_regs", &regs, sizeof(regs));
+
+out:
+ free(command_line);
+ return result;
+}
+
+/*
+ * EOF (kexec-multiboot-x86.c)
+ */
diff --git a/kexec/arch/i386/kexec-nbi.c b/kexec/arch/i386/kexec-nbi.c
new file mode 100644
index 0000000..8eb2154
--- /dev/null
+++ b/kexec/arch/i386/kexec-nbi.c
@@ -0,0 +1,249 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2005 Eric Biederman (ebiederm@xmission.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-elf-boot.h"
+#include "kexec-x86.h"
+#include <arch/options.h>
+
+struct segheader
+{
+ uint8_t length;
+ uint8_t vendortag;
+ uint8_t reserved;
+ uint8_t flags;
+#define NBI_SEG 0x3
+#define NBI_SEG_ABSOLUTE 0
+#define NBI_SEG_APPEND 1
+#define NBI_SEG_NEGATIVE 2
+#define NBI_SEG_PREPEND 3
+#define NBI_LAST_SEG (1 << 2)
+ uint32_t loadaddr;
+ uint32_t imglength;
+ uint32_t memlength;
+};
+
+struct imgheader
+{
+#define NBI_MAGIC "\x36\x13\x03\x1b"
+ uint8_t magic[4];
+#define NBI_RETURNS (1 << 8)
+#define NBI_ENTRY32 (1 << 31)
+ uint32_t length; /* and flags */
+ struct { uint16_t bx, ds; } segoff;
+ union {
+ struct { uint16_t ip, cs; } segoff;
+ uint32_t linear;
+ } execaddr;
+};
+
+
+static const int probe_debug = 0;
+
+int nbi_probe(const char *buf, off_t len)
+{
+ struct imgheader hdr;
+ struct segheader seg;
+ off_t seg_off;
+ /* If we don't have enough data give up */
+ if (((uintmax_t)len < (uintmax_t)sizeof(hdr)) || (len < 512)) {
+ return -1;
+ }
+ memcpy(&hdr, buf, sizeof(hdr));
+ if (memcmp(hdr.magic, NBI_MAGIC, sizeof(hdr.magic)) != 0) {
+ return -1;
+ }
+ /* Ensure we have a properly sized header */
+ if (((hdr.length & 0xf)*4) != sizeof(hdr)) {
+ if (probe_debug) {
+ fprintf(stderr, "NBI: Bad vendor header size\n");
+ }
+ return -1;
+ }
+ /* Ensure the vendor header is not too large.
+ * This can't actually happen but....
+ */
+ if ((((hdr.length & 0xf0) >> 4)*4) > (512 - sizeof(hdr))) {
+ if (probe_debug) {
+ fprintf(stderr, "NBI: vendor headr too large\n");
+ }
+ return -1;
+ }
+ /* Reserved bits are set in the image... */
+ if ((hdr.length & 0x7ffffe00)) {
+ if (probe_debug) {
+ fprintf(stderr, "NBI: Reserved header bits set\n");
+ }
+ return -1;
+ }
+ /* If the image can return refuse to load it */
+ if (hdr.length & (1 << 8)) {
+ if (probe_debug) {
+ printf("NBI: image wants to return\n");
+ }
+ return -1;
+ }
+ /* Now verify the segments all fit within 512 bytes */
+ seg_off = (((hdr.length & 0xf0) >> 4) + (hdr.length & 0x0f)) << 2;
+ do {
+ memcpy(&seg, buf + seg_off, sizeof(seg));
+ if ((seg.length & 0xf) != 4) {
+ if (probe_debug) {
+ fprintf(stderr, "NBI: Invalid segment length\n");
+ }
+ return -1;
+ }
+ seg_off += ((seg.length & 0xf) + ((seg.length >> 4) & 0xf)) << 2;
+ if (seg.flags & 0xf8) {
+ if (probe_debug) {
+ fprintf(stderr, "NBI: segment reserved flags set\n");
+ }
+ return -1;
+ }
+ if ((seg.flags & NBI_SEG) == NBI_SEG_NEGATIVE) {
+ if (probe_debug) {
+ fprintf(stderr, "NBI: negative segment addresses not supported\n");
+ }
+ return -1;
+ }
+ if (seg_off > 512) {
+ if (probe_debug) {
+ fprintf(stderr, "NBI: segment outside 512 header\n");
+ }
+ return -1;
+ }
+ } while(!(seg.flags & NBI_LAST_SEG));
+ return 0;
+}
+
+void nbi_usage(void)
+{
+ printf( "\n"
+ );
+}
+
+int nbi_load(int argc, char **argv, const char *buf, off_t UNUSED(len),
+ struct kexec_info *info)
+{
+ struct imgheader hdr;
+ struct segheader seg;
+ off_t seg_off;
+ off_t file_off;
+ uint32_t last0, last1;
+ int opt;
+
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { 0, 0, NULL, 0 },
+ };
+
+ static const char short_options[] = KEXEC_OPT_STR "";
+
+ /*
+ * Parse the command line arguments
+ */
+ while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch(opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX) {
+ break;
+ }
+ }
+ }
+ /* Get a copy of the header */
+ memcpy(&hdr, buf, sizeof(hdr));
+
+ /* Load the first 512 bytes */
+ add_segment(info, buf + 0, 512,
+ (hdr.segoff.ds << 4) + hdr.segoff.bx, 512);
+
+ /* Initialize variables */
+ file_off = 512;
+ last0 = (hdr.segoff.ds << 4) + hdr.segoff.bx;
+ last1 = last0 + 512;
+
+ /* Load the segments */
+ seg_off = (((hdr.length & 0xf0) >> 4) + (hdr.length & 0x0f)) << 2;
+ do {
+ uint32_t loadaddr;
+ memcpy(&seg, buf + seg_off, sizeof(seg));
+ seg_off += ((seg.length & 0xf) + ((seg.length >> 4) & 0xf)) << 2;
+ if ((seg.flags & NBI_SEG) == NBI_SEG_ABSOLUTE) {
+ loadaddr = seg.loadaddr;
+ }
+ else if ((seg.flags & NBI_SEG) == NBI_SEG_APPEND) {
+ loadaddr = last1 + seg.loadaddr;
+ }
+#if 0
+ else if ((seg.flags & NBI_SEG) == NBI_SEG_NEGATIVE) {
+ loadaddr = memsize - seg.loadaddr;
+ }
+#endif
+ else if ((seg.flags & NBI_SEG) == NBI_SEG_PREPEND) {
+ loadaddr = last0 - seg.loadaddr;
+ }
+ else {
+ printf("warning: unhandled segment of type %0x\n",
+ seg.flags & NBI_SEG);
+ continue;
+ }
+ add_segment(info, buf + file_off, seg.imglength,
+ loadaddr, seg.memlength);
+ last0 = loadaddr;
+ last1 = last0 + seg.memlength;
+ file_off += seg.imglength;
+ } while(!(seg.flags & NBI_LAST_SEG));
+
+ if (hdr.length & NBI_ENTRY32) {
+ struct entry32_regs regs32;
+ /* Initialize the registers */
+ elf_rel_get_symbol(&info->rhdr, "entry32_regs32", &regs32, sizeof(regs32));
+ regs32.eip = hdr.execaddr.linear;
+ elf_rel_set_symbol(&info->rhdr, "entry32_regs32", &regs32, sizeof(regs32));
+ }
+ else {
+ struct entry32_regs regs32;
+ struct entry16_regs regs16;
+
+ /* Initialize the 16 bit registers */
+ elf_rel_get_symbol(&info->rhdr, "entry16_regs", &regs16, sizeof(regs16));
+ regs16.cs = hdr.execaddr.segoff.cs;
+ regs16.ip = hdr.execaddr.segoff.ip;
+ elf_rel_set_symbol(&info->rhdr, "entry16_regs", &regs16, sizeof(regs16));
+
+ /* Initialize the 32 bit registers */
+ elf_rel_get_symbol(&info->rhdr, "entry32_regs", &regs32, sizeof(regs32));
+ regs32.eip = elf_rel_get_addr(&info->rhdr, "entry16");
+ elf_rel_set_symbol(&info->rhdr, "entry32_regs", &regs32, sizeof(regs32));
+ }
+ return 0;
+}
diff --git a/kexec/arch/i386/kexec-x86-common.c b/kexec/arch/i386/kexec-x86-common.c
new file mode 100644
index 0000000..ffc95a9
--- /dev/null
+++ b/kexec/arch/i386/kexec-x86-common.c
@@ -0,0 +1,444 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2003-2005 Eric Biederman (ebiederm@xmission.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _XOPEN_SOURCE 600
+#define _BSD_SOURCE
+#define _DEFAULT_SOURCE
+
+#include <fcntl.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "../../firmware_memmap.h"
+#include "../../crashdump.h"
+#include "../../kexec-xen.h"
+#include "kexec-x86.h"
+#include "x86-linux-setup.h"
+
+/* Used below but not present in (older?) xenctrl.h */
+#ifndef E820_PMEM
+#define E820_PMEM 7
+#define E820_PRAM 12
+#endif
+
+/*
+ * The real mode IVT ends at 0x400.
+ * See https://wiki.osdev.org/Interrupt_Vector_Table.
+ */
+#define REALMODE_IVT_END 0x400
+
+static struct memory_range memory_range[MAX_MEMORY_RANGES];
+
+/**
+ * The old /proc/iomem parsing code.
+ *
+ * @param[out] range pointer that will be set to an array that holds the
+ * memory ranges
+ * @param[out] ranges number of ranges valid in @p range
+ *
+ * @return 0 on success, any other value on failure.
+ */
+static int get_memory_ranges_proc_iomem(struct memory_range **range, int *ranges)
+{
+ const char *iomem= proc_iomem();
+ int memory_ranges = 0;
+ char line[MAX_LINE];
+ FILE *fp;
+ fp = fopen(iomem, "r");
+ if (!fp) {
+ fprintf(stderr, "Cannot open %s: %s\n",
+ iomem, strerror(errno));
+ return -1;
+ }
+ while(fgets(line, sizeof(line), fp) != 0) {
+ unsigned long long start, end;
+ char *str;
+ int type;
+ int consumed;
+ int count;
+ if (memory_ranges >= MAX_MEMORY_RANGES)
+ break;
+ count = sscanf(line, "%llx-%llx : %n",
+ &start, &end, &consumed);
+ if (count != 2)
+ continue;
+ str = line + consumed;
+
+ dbgprintf("%016Lx-%016Lx : %s", start, end, str);
+
+ if (memcmp(str, "System RAM\n", 11) == 0) {
+ type = RANGE_RAM;
+ }
+ else if (strncasecmp(str, "reserved\n", 9) == 0) {
+ type = RANGE_RESERVED;
+ }
+ else if (memcmp(str, "ACPI Tables\n", 12) == 0) {
+ type = RANGE_ACPI;
+ }
+ else if (memcmp(str, "ACPI Non-volatile Storage\n", 26) == 0) {
+ type = RANGE_ACPI_NVS;
+ }
+ else if (memcmp(str, "Persistent Memory (legacy)\n", 27) == 0) {
+ type = RANGE_PRAM;
+ }
+ else if (memcmp(str, "Persistent Memory\n", 18) == 0) {
+ type = RANGE_PMEM;
+ }
+ else {
+ continue;
+ }
+ memory_range[memory_ranges].start = start;
+ memory_range[memory_ranges].end = end;
+ memory_range[memory_ranges].type = type;
+
+ dbgprintf("%016Lx-%016Lx : %x\n", start, end, type);
+
+ memory_ranges++;
+ }
+ fclose(fp);
+ *range = memory_range;
+ *ranges = memory_ranges;
+ return 0;
+}
+
+/**
+ * Calls the architecture independent get_firmware_memmap_ranges() to parse
+ * /sys/firmware/memmap and then do some x86 only modifications.
+ *
+ * @param[out] range pointer that will be set to an array that holds the
+ * memory ranges
+ * @param[out] ranges number of ranges valid in @p range
+ *
+ * @return 0 on success, any other value on failure.
+ */
+static int get_memory_ranges_sysfs(struct memory_range **range, int *ranges)
+{
+ int ret;
+ size_t range_number = MAX_MEMORY_RANGES;
+
+ ret = get_firmware_memmap_ranges(memory_range, &range_number);
+ if (ret != 0) {
+ fprintf(stderr, "Parsing the /sys/firmware memory map failed. "
+ "Falling back to /proc/iomem.\n");
+ return get_memory_ranges_proc_iomem(range, ranges);
+ }
+
+ *range = memory_range;
+ *ranges = range_number;
+
+ return 0;
+}
+
+#ifdef HAVE_LIBXENCTRL
+unsigned xen_e820_to_kexec_type(uint32_t type)
+{
+ switch (type) {
+ case E820_RAM:
+ return RANGE_RAM;
+ case E820_ACPI:
+ return RANGE_ACPI;
+ case E820_NVS:
+ return RANGE_ACPI_NVS;
+ case E820_PMEM:
+ return RANGE_PMEM;
+ case E820_PRAM:
+ return RANGE_PRAM;
+ case E820_RESERVED:
+ default:
+ return RANGE_RESERVED;
+ }
+}
+
+/**
+ * Memory map detection for Xen.
+ *
+ * @param[out] range pointer that will be set to an array that holds the
+ * memory ranges
+ * @param[out] ranges number of ranges valid in @p range
+ *
+ * @return 0 on success, any other value on failure.
+ */
+static int get_memory_ranges_xen(struct memory_range **range, int *ranges)
+{
+ int rc, ret = -1;
+ struct e820entry e820entries[MAX_MEMORY_RANGES];
+ unsigned int i;
+ xc_interface *xc;
+
+ xc = xc_interface_open(NULL, NULL, 0);
+
+ if (!xc) {
+ fprintf(stderr, "%s: Failed to open Xen control interface\n", __func__);
+ return -1;
+ }
+
+ rc = xc_get_machine_memory_map(xc, e820entries, MAX_MEMORY_RANGES);
+
+ if (rc < 0) {
+ fprintf(stderr, "%s: xc_get_machine_memory_map: %s\n", __func__, strerror(rc));
+ goto err;
+ }
+
+ for (i = 0; i < rc; ++i) {
+ memory_range[i].start = e820entries[i].addr;
+ memory_range[i].end = e820entries[i].addr + e820entries[i].size - 1;
+ memory_range[i].type = xen_e820_to_kexec_type(e820entries[i].type);
+ }
+
+ qsort(memory_range, rc, sizeof(struct memory_range), compare_ranges);
+
+ *range = memory_range;
+ *ranges = rc;
+
+ ret = 0;
+
+err:
+ xc_interface_close(xc);
+
+ return ret;
+}
+#else
+static int get_memory_ranges_xen(struct memory_range **range, int *ranges)
+{
+ return 0;
+}
+#endif /* HAVE_LIBXENCTRL */
+
+static void remove_range(struct memory_range *range, int nr_ranges, int index)
+{
+ int i, j;
+
+ for (i = index; i < (nr_ranges-1); i++) {
+ j = i+1;
+ range[i] = range[j];
+ }
+}
+
+/**
+ * Verifies and corrects any overlapping ranges.
+ * The ranges array is assumed to be sorted already.
+ *
+ * @param[out] range pointer that will be set to an array that holds the
+ * memory ranges
+ * @param[out] ranges number of ranges valid in @p range
+ *
+ * @return 0 on success, any other value on failure.
+ */
+static int fixup_memory_ranges(struct memory_range **range, int *ranges)
+{
+ int i;
+ int j;
+ int change_made;
+ int nr_ranges = *ranges;
+ struct memory_range *rp = *range;
+
+again:
+ change_made = 0;
+ for (i = 0; i < (nr_ranges-1); i++) {
+ j = i+1;
+ if (rp[i].start > rp[j].start) {
+ fprintf(stderr, "memory out of order!!\n");
+ return 1;
+ }
+
+ if (rp[i].type != rp[j].type)
+ continue;
+
+ if (rp[i].start == rp[j].start) {
+ if (rp[i].end >= rp[j].end) {
+ remove_range(rp, nr_ranges, j);
+ nr_ranges--;
+ change_made++;
+ } else {
+ remove_range(rp, nr_ranges, i);
+ nr_ranges--;
+ change_made++;
+ }
+ } else {
+ if (rp[i].end > rp[j].start) {
+ if (rp[i].end < rp[j].end) {
+ rp[j].start = rp[i].end;
+ change_made++;
+ } else if (rp[i].end >= rp[j].end) {
+ remove_range(rp, nr_ranges, j);
+ nr_ranges--;
+ change_made++;
+ }
+ }
+ }
+ }
+
+ /* fixing/removing an entry may make it wrong relative to the next */
+ if (change_made)
+ goto again;
+
+ *ranges = nr_ranges;
+ return 0;
+}
+
+/**
+ * Detect the add_efi_memmap kernel parameter.
+ *
+ * On some EFI-based systems, the e820 map is empty, or does not contain a
+ * complete memory map. The add_efi_memmap parameter adds these entries to
+ * the kernel's memory map, but does not add them under sysfs, which causes
+ * kexec to fail in a way similar to how it does not work on Xen.
+ *
+ * @return 1 if parameter is present, 0 if not or if an error occurs.
+ */
+int efi_map_added( void ) {
+ char buf[512];
+ FILE *fp = fopen( "/proc/cmdline", "r" );
+ if( fp ) {
+ fgets( buf, 512, fp );
+ fclose( fp );
+ return strstr( buf, "add_efi_memmap" ) != NULL;
+ } else {
+ return 0;
+ }
+}
+
+/**
+ * Return a sorted list of memory ranges.
+ *
+ * If we have the /sys/firmware/memmap interface, then use that. If not,
+ * or if parsing of that fails, use /proc/iomem as fallback.
+ *
+ * @param[out] range pointer that will be set to an array that holds the
+ * memory ranges
+ * @param[out] ranges number of ranges valid in @p range
+ * @param[in] kexec_flags the kexec_flags to determine if we load a normal
+ * or a crashdump kernel
+ *
+ * @return 0 on success, any other value on failure.
+ */
+int get_memory_ranges(struct memory_range **range, int *ranges,
+ unsigned long kexec_flags)
+{
+ int ret, i;
+
+ if (!efi_map_added() && !xen_present() && have_sys_firmware_memmap()) {
+ ret = get_memory_ranges_sysfs(range, ranges);
+ if (!ret)
+ ret = fixup_memory_ranges(range, ranges);
+ } else if (xen_present()) {
+ ret = get_memory_ranges_xen(range, ranges);
+ if (!ret)
+ ret = fixup_memory_ranges(range, ranges);
+ } else
+ ret = get_memory_ranges_proc_iomem(range, ranges);
+
+ /*
+ * get_memory_ranges_sysfs(), get_memory_ranges_proc_iomem() and
+ * get_memory_ranges_xen() have already printed an error message,
+ * so fail silently here.
+ */
+ if (ret != 0)
+ return ret;
+
+ /* Don't report the interrupt table as ram */
+ for (i = 0; i < *ranges; i++) {
+ if ((*range)[i].type == RANGE_RAM &&
+ ((*range)[i].start < REALMODE_IVT_END)) {
+ (*range)[i].start = REALMODE_IVT_END;
+ break;
+ }
+ }
+
+ /*
+ * Redefine the memory region boundaries if kernel
+ * exports the limits and if it is panic kernel.
+ * Override user values only if kernel exported values are
+ * subset of user defined values.
+ */
+ if ((kexec_flags & KEXEC_ON_CRASH) &&
+ !(kexec_flags & KEXEC_PRESERVE_CONTEXT)) {
+ uint64_t start, end;
+
+ ret = get_crash_kernel_load_range(&start, &end);
+ if (ret != 0) {
+ fprintf(stderr, "get_crash_kernel_load_range failed.\n");
+ return -1;
+ }
+
+ if (start > mem_min)
+ mem_min = start;
+ if (end < mem_max)
+ mem_max = end;
+ }
+
+ dbgprint_mem_range("MEMORY RANGES", *range, *ranges);
+
+ return ret;
+}
+
+static uint64_t bootparam_get_acpi_rsdp(void) {
+ uint64_t acpi_rsdp = 0;
+ off_t offset = offsetof(struct x86_linux_param_header, acpi_rsdp_addr);
+
+ if (get_bootparam(&acpi_rsdp, offset, sizeof(acpi_rsdp)))
+ return 0;
+
+ return acpi_rsdp;
+}
+
+static uint64_t efi_get_acpi_rsdp(void) {
+ FILE *fp;
+ char line[MAX_LINE], *s;
+ uint64_t acpi_rsdp = 0;
+
+ fp = fopen("/sys/firmware/efi/systab", "r");
+ if (!fp)
+ return acpi_rsdp;
+
+ while(fgets(line, sizeof(line), fp) != 0) {
+ /* ACPI20= always goes before ACPI= */
+ if ((strstr(line, "ACPI20=")) || (strstr(line, "ACPI="))) {
+ s = strchr(line, '=') + 1;
+ sscanf(s, "0x%lx", &acpi_rsdp);
+ break;
+ }
+ }
+ fclose(fp);
+
+ return acpi_rsdp;
+}
+
+uint64_t get_acpi_rsdp(void)
+{
+ uint64_t acpi_rsdp = 0;
+
+ acpi_rsdp = bootparam_get_acpi_rsdp();
+
+ if (!acpi_rsdp)
+ acpi_rsdp = efi_get_acpi_rsdp();
+
+ return acpi_rsdp;
+}
diff --git a/kexec/arch/i386/kexec-x86.c b/kexec/arch/i386/kexec-x86.c
new file mode 100644
index 0000000..444cb69
--- /dev/null
+++ b/kexec/arch/i386/kexec-x86.c
@@ -0,0 +1,210 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2003-2005 Eric Biederman (ebiederm@xmission.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <stddef.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "../../firmware_memmap.h"
+#include "kexec-x86.h"
+#include "crashdump-x86.h"
+#include <arch/options.h>
+
+struct file_type file_type[] = {
+ { "multiboot-x86", multiboot_x86_probe, multiboot_x86_load,
+ multiboot_x86_usage },
+ { "multiboot2-x86", multiboot2_x86_probe, multiboot2_x86_load,
+ multiboot2_x86_usage },
+ { "elf-x86", elf_x86_probe, elf_x86_load, elf_x86_usage },
+ { "bzImage", bzImage_probe, bzImage_load, bzImage_usage },
+ { "beoboot-x86", beoboot_probe, beoboot_load, beoboot_usage },
+ { "nbi-x86", nbi_probe, nbi_load, nbi_usage },
+};
+int file_types = sizeof(file_type)/sizeof(file_type[0]);
+
+
+void arch_usage(void)
+{
+ printf(
+ " --reset-vga Attempt to reset a standard vga device\n"
+ " --serial=<port> Specify the serial port for debug output\n"
+ " --serial-baud=<baud_rate> Specify the serial port baud rate\n"
+ " --console-vga Enable the vga console\n"
+ " --console-serial Enable the serial console\n"
+ " --elf32-core-headers Prepare core headers in ELF32 format\n"
+ " --elf64-core-headers Prepare core headers in ELF64 format\n"
+ " --pass-memmap-cmdline Pass memory map via command line in kexec on panic case\n"
+ " --noefi Disable efi support\n"
+ );
+}
+
+struct arch_options_t arch_options = {
+ .reset_vga = 0,
+ .serial_base = 0x3f8,
+ .serial_baud = 0,
+ .console_vga = 0,
+ .console_serial = 0,
+ .core_header_type = CORE_TYPE_UNDEF,
+ .pass_memmap_cmdline = 0,
+ .noefi = 0,
+};
+
+int arch_process_options(int argc, char **argv)
+{
+ static const struct option options[] = {
+ KEXEC_ALL_OPTIONS
+ { 0, 0, NULL, 0 },
+ };
+ static const char short_options[] = KEXEC_ALL_OPT_STR;
+ int opt;
+ unsigned long value;
+ char *end;
+
+ opterr = 0; /* Don't complain about unrecognized options here */
+ while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch(opt) {
+ default:
+ break;
+ case OPT_RESET_VGA:
+ arch_options.reset_vga = 1;
+ break;
+ case OPT_CONSOLE_VGA:
+ arch_options.console_vga = 1;
+ break;
+ case OPT_CONSOLE_SERIAL:
+ arch_options.console_serial = 1;
+ break;
+ case OPT_SERIAL:
+ value = ULONG_MAX;
+ if (strcmp(optarg, "ttyS0") == 0) {
+ value = 0x3f8;
+ }
+ else if (strcmp(optarg, "ttyS1") == 0) {
+ value = 0x2f8;
+ }
+ else if (strncmp(optarg, "0x", 2) == 0) {
+ value = strtoul(optarg +2, &end, 16);
+ if (*end != '\0') {
+ value = ULONG_MAX;
+ }
+ }
+ if (value >= 65536) {
+ fprintf(stderr, "Bad serial port base '%s'\n",
+ optarg);
+ usage();
+ return -1;
+
+ }
+ arch_options.serial_base = value;
+ break;
+ case OPT_SERIAL_BAUD:
+ value = strtoul(optarg, &end, 0);
+ if ((value > 115200) || ((115200 %value) != 0) ||
+ (value < 9600) || (*end))
+ {
+ fprintf(stderr, "Bad serial port baud rate '%s'\n",
+ optarg);
+ usage();
+ return -1;
+
+ }
+ arch_options.serial_baud = value;
+ break;
+ case OPT_ELF32_CORE:
+ arch_options.core_header_type = CORE_TYPE_ELF32;
+ break;
+ case OPT_ELF64_CORE:
+ arch_options.core_header_type = CORE_TYPE_ELF64;
+ break;
+ case OPT_PASS_MEMMAP_CMDLINE:
+ arch_options.pass_memmap_cmdline = 1;
+ break;
+ case OPT_NOEFI:
+ arch_options.noefi = 1;
+ break;
+ }
+ }
+ /* Reset getopt for the next pass; called in other source modules */
+ opterr = 1;
+ optind = 1;
+ return 0;
+}
+
+const struct arch_map_entry arches[] = {
+ /* For compatibility with older patches
+ * use KEXEC_ARCH_DEFAULT instead of KEXEC_ARCH_386 here.
+ */
+ { "i386", KEXEC_ARCH_DEFAULT },
+ { "i486", KEXEC_ARCH_DEFAULT },
+ { "i586", KEXEC_ARCH_DEFAULT },
+ { "i686", KEXEC_ARCH_DEFAULT },
+ { "x86_64", KEXEC_ARCH_X86_64 },
+ { 0, 0 },
+};
+
+int arch_compat_trampoline(struct kexec_info *info)
+{
+ if ((info->kexec_flags & KEXEC_ARCH_MASK) == KEXEC_ARCH_X86_64)
+ {
+ if (!info->rhdr.e_shdr) {
+ fprintf(stderr,
+ "A trampoline is required for cross architecture support\n");
+ return -1;
+ }
+ elf_rel_set_symbol(&info->rhdr, "compat_x86_64_entry32",
+ &info->entry, sizeof(info->entry));
+
+ info->entry = (void *)elf_rel_get_addr(&info->rhdr, "compat_x86_64");
+ }
+ return 0;
+}
+
+void arch_update_purgatory(struct kexec_info *info)
+{
+ uint8_t panic_kernel = 0;
+
+ elf_rel_set_symbol(&info->rhdr, "reset_vga",
+ &arch_options.reset_vga, sizeof(arch_options.reset_vga));
+ elf_rel_set_symbol(&info->rhdr, "serial_base",
+ &arch_options.serial_base, sizeof(arch_options.serial_base));
+ elf_rel_set_symbol(&info->rhdr, "serial_baud",
+ &arch_options.serial_baud, sizeof(arch_options.serial_baud));
+ elf_rel_set_symbol(&info->rhdr, "console_vga",
+ &arch_options.console_vga, sizeof(arch_options.console_vga));
+ elf_rel_set_symbol(&info->rhdr, "console_serial",
+ &arch_options.console_serial, sizeof(arch_options.console_serial));
+ elf_rel_set_symbol(&info->rhdr, "backup_src_start",
+ &info->backup_src_start, sizeof(info->backup_src_start));
+ elf_rel_set_symbol(&info->rhdr, "backup_src_size",
+ &info->backup_src_size, sizeof(info->backup_src_size));
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ panic_kernel = 1;
+ elf_rel_set_symbol(&info->rhdr, "backup_start",
+ &info->backup_start, sizeof(info->backup_start));
+ }
+ elf_rel_set_symbol(&info->rhdr, "panic_kernel",
+ &panic_kernel, sizeof(panic_kernel));
+}
diff --git a/kexec/arch/i386/kexec-x86.h b/kexec/arch/i386/kexec-x86.h
new file mode 100644
index 0000000..46e2898
--- /dev/null
+++ b/kexec/arch/i386/kexec-x86.h
@@ -0,0 +1,97 @@
+#ifndef KEXEC_X86_H
+#define KEXEC_X86_H
+
+#define MAX_MEMORY_RANGES 2048
+
+enum coretype {
+ CORE_TYPE_UNDEF = 0,
+ CORE_TYPE_ELF32 = 1,
+ CORE_TYPE_ELF64 = 2
+};
+
+extern unsigned char compat_x86_64[];
+extern uint32_t compat_x86_64_size, compat_x86_64_entry32;
+
+struct entry32_regs {
+ uint32_t eax;
+ uint32_t ebx;
+ uint32_t ecx;
+ uint32_t edx;
+ uint32_t esi;
+ uint32_t edi;
+ uint32_t esp;
+ uint32_t ebp;
+ uint32_t eip;
+};
+
+struct entry16_regs {
+ uint32_t eax;
+ uint32_t ebx;
+ uint32_t ecx;
+ uint32_t edx;
+ uint32_t esi;
+ uint32_t edi;
+ uint32_t esp;
+ uint32_t ebp;
+ uint16_t ds;
+ uint16_t es;
+ uint16_t ss;
+ uint16_t fs;
+ uint16_t gs;
+ uint16_t ip;
+ uint16_t cs;
+ uint16_t pad;
+};
+
+struct arch_options_t {
+ uint8_t reset_vga;
+ uint16_t serial_base;
+ uint32_t serial_baud;
+ uint8_t console_vga;
+ uint8_t console_serial;
+ enum coretype core_header_type;
+ uint8_t pass_memmap_cmdline;
+ uint8_t noefi;
+ uint8_t reuse_video_type;
+};
+
+int multiboot_x86_probe(const char *buf, off_t len);
+int multiboot_x86_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void multiboot_x86_usage(void);
+
+int multiboot2_x86_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void multiboot2_x86_usage(void);
+int multiboot2_x86_probe(const char *buf, off_t buf_len);
+
+int elf_x86_probe(const char *buf, off_t len);
+int elf_x86_any_probe(const char *buf, off_t len, enum coretype arch);
+int elf_x86_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void elf_x86_usage(void);
+
+int bzImage_probe(const char *buf, off_t len);
+int bzImage_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void bzImage_usage(void);
+int do_bzImage_load(struct kexec_info *info,
+ const char *kernel, off_t kernel_len,
+ const char *command_line, off_t command_line_len,
+ const char *initrd, off_t initrd_len,
+ const char *dtb, off_t dtb_len,
+ int real_mode_entry);
+
+int beoboot_probe(const char *buf, off_t len);
+int beoboot_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void beoboot_usage(void);
+
+int nbi_probe(const char *buf, off_t len);
+int nbi_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void nbi_usage(void);
+
+extern unsigned xen_e820_to_kexec_type(uint32_t type);
+extern uint64_t get_acpi_rsdp(void);
+#endif /* KEXEC_X86_H */
diff --git a/kexec/arch/i386/x86-linux-setup.c b/kexec/arch/i386/x86-linux-setup.c
new file mode 100644
index 0000000..9a281dc
--- /dev/null
+++ b/kexec/arch/i386/x86-linux-setup.c
@@ -0,0 +1,971 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2003,2004 Eric Biederman (ebiederm@xmission.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+#define _GNU_SOURCE
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/random.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <linux/fb.h>
+#include <linux/screen_info.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <mntent.h>
+#include <x86/x86-linux.h>
+#include "../../kexec.h"
+#include "kexec-x86.h"
+#include "x86-linux-setup.h"
+#include "../../kexec/kexec-syscall.h"
+
+#ifndef VIDEO_CAPABILITY_64BIT_BASE
+#define VIDEO_CAPABILITY_64BIT_BASE (1 << 1) /* Frame buffer base is 64-bit */
+#endif
+
+void init_linux_parameters(struct x86_linux_param_header *real_mode)
+{
+ /* Fill in the values that are usually provided by the kernel. */
+
+ /* Boot block magic */
+ memcpy(real_mode->header_magic, "HdrS", 4);
+ real_mode->protocol_version = 0x0206;
+ real_mode->initrd_addr_max = DEFAULT_INITRD_ADDR_MAX;
+ real_mode->cmdline_size = COMMAND_LINE_SIZE;
+}
+
+void setup_linux_bootloader_parameters_high(
+ struct kexec_info *info, struct x86_linux_param_header *real_mode,
+ unsigned long real_mode_base, unsigned long cmdline_offset,
+ const char *cmdline, off_t cmdline_len,
+ const char *initrd_buf, off_t initrd_size, int initrd_high)
+{
+ char *cmdline_ptr;
+ unsigned long initrd_base, initrd_addr_max;
+
+ /* Say I'm a boot loader */
+ real_mode->loader_type = LOADER_TYPE_KEXEC << 4;
+
+ /* No loader flags */
+ real_mode->loader_flags = 0;
+
+ /* Find the maximum initial ramdisk address */
+ if (initrd_high)
+ initrd_addr_max = ULONG_MAX;
+ else {
+ initrd_addr_max = DEFAULT_INITRD_ADDR_MAX;
+ if (real_mode->protocol_version >= 0x0203) {
+ initrd_addr_max = real_mode->initrd_addr_max;
+ dbgprintf("initrd_addr_max is 0x%lx\n",
+ initrd_addr_max);
+ }
+ }
+
+ /* Load the initrd if we have one */
+ if (initrd_buf) {
+ initrd_base = add_buffer(info,
+ initrd_buf, initrd_size, initrd_size,
+ 4096, INITRD_BASE, initrd_addr_max, -1);
+ dbgprintf("Loaded initrd at 0x%lx size 0x%lx\n", initrd_base,
+ initrd_size);
+ } else {
+ initrd_base = 0;
+ initrd_size = 0;
+ }
+
+ /* Ramdisk address and size */
+ real_mode->initrd_start = initrd_base & 0xffffffffUL;
+ real_mode->initrd_size = initrd_size & 0xffffffffUL;
+
+ if (real_mode->protocol_version >= 0x020c &&
+ (initrd_base & 0xffffffffUL) != initrd_base)
+ real_mode->ext_ramdisk_image = initrd_base >> 32;
+
+ if (real_mode->protocol_version >= 0x020c &&
+ (initrd_size & 0xffffffffUL) != initrd_size)
+ real_mode->ext_ramdisk_size = initrd_size >> 32;
+
+ /* The location of the command line */
+ /* if (real_mode_base == 0x90000) { */
+ real_mode->cl_magic = CL_MAGIC_VALUE;
+ real_mode->cl_offset = cmdline_offset;
+ /* setup_move_size */
+ /* } */
+ if (real_mode->protocol_version >= 0x0202) {
+ unsigned long cmd_line_ptr = real_mode_base + cmdline_offset;
+
+ real_mode->cmd_line_ptr = cmd_line_ptr & 0xffffffffUL;
+ if ((real_mode->protocol_version >= 0x020c) &&
+ ((cmd_line_ptr & 0xffffffffUL) != cmd_line_ptr))
+ real_mode->ext_cmd_line_ptr = cmd_line_ptr >> 32;
+ }
+
+ /* Fill in the command line */
+ if (cmdline_len > COMMAND_LINE_SIZE) {
+ cmdline_len = COMMAND_LINE_SIZE;
+ }
+ cmdline_ptr = ((char *)real_mode) + cmdline_offset;
+ memcpy(cmdline_ptr, cmdline, cmdline_len);
+ cmdline_ptr[cmdline_len - 1] = '\0';
+}
+
+static int setup_linux_vesafb(struct x86_linux_param_header *real_mode)
+{
+ struct fb_fix_screeninfo fix;
+ struct fb_var_screeninfo var;
+ int fd;
+
+ fd = open("/dev/fb0", O_RDONLY);
+ if (-1 == fd)
+ return -1;
+
+ if (-1 == ioctl(fd, FBIOGET_FSCREENINFO, &fix))
+ goto out;
+ if (-1 == ioctl(fd, FBIOGET_VSCREENINFO, &var))
+ goto out;
+ if (0 == strcmp(fix.id, "VESA VGA")) {
+ /* VIDEO_TYPE_VLFB */
+ real_mode->orig_video_isVGA = 0x23;
+ } else if (0 == strcmp(fix.id, "EFI VGA")) {
+ /* VIDEO_TYPE_EFI */
+ real_mode->orig_video_isVGA = 0x70;
+ } else if (arch_options.reuse_video_type) {
+ int err;
+ off_t offset = offsetof(typeof(*real_mode), orig_video_isVGA);
+
+ /* blindly try old boot time video type */
+ err = get_bootparam(&real_mode->orig_video_isVGA, offset, 1);
+ if (err)
+ goto out;
+ } else {
+ real_mode->orig_video_isVGA = 0;
+ close(fd);
+ return 0;
+ }
+ close(fd);
+
+ real_mode->lfb_width = var.xres;
+ real_mode->lfb_height = var.yres;
+ real_mode->lfb_depth = var.bits_per_pixel;
+ real_mode->lfb_base = fix.smem_start & 0xffffffffUL;
+ real_mode->lfb_linelength = fix.line_length;
+ real_mode->vesapm_seg = 0;
+
+ if (fix.smem_start > 0xffffffffUL) {
+ real_mode->ext_lfb_base = fix.smem_start >> 32;
+ real_mode->capabilities |= VIDEO_CAPABILITY_64BIT_BASE;
+ }
+
+ /* FIXME: better get size from the file returned by proc_iomem() */
+ real_mode->lfb_size = (fix.smem_len + 65535) / 65536;
+ real_mode->pages = (fix.smem_len + 4095) / 4096;
+
+ if (var.bits_per_pixel > 8) {
+ real_mode->red_pos = var.red.offset;
+ real_mode->red_size = var.red.length;
+ real_mode->green_pos = var.green.offset;
+ real_mode->green_size = var.green.length;
+ real_mode->blue_pos = var.blue.offset;
+ real_mode->blue_size = var.blue.length;
+ real_mode->rsvd_pos = var.transp.offset;
+ real_mode->rsvd_size = var.transp.length;
+ }
+ return 0;
+
+ out:
+ close(fd);
+ return -1;
+}
+
+#define EDD_SYFS_DIR "/sys/firmware/edd"
+
+#define EDD_EXT_FIXED_DISK_ACCESS (1 << 0)
+#define EDD_EXT_DEVICE_LOCKING_AND_EJECTING (1 << 1)
+#define EDD_EXT_ENHANCED_DISK_DRIVE_SUPPORT (1 << 2)
+#define EDD_EXT_64BIT_EXTENSIONS (1 << 3)
+
+/*
+ * Scans one line from a given filename. Returns on success the number of
+ * items written (same like scanf()).
+ */
+static int file_scanf(const char *dir, const char *file, const char *scanf_line, ...)
+{
+ va_list argptr;
+ FILE *fp;
+ int retno;
+ char filename[PATH_MAX];
+
+ snprintf(filename, PATH_MAX, "%s/%s", dir, file);
+ filename[PATH_MAX-1] = 0;
+
+ fp = fopen(filename, "r");
+ if (!fp) {
+ return -errno;
+ }
+
+ va_start(argptr, scanf_line);
+ retno = vfscanf(fp, scanf_line, argptr);
+ va_end(argptr);
+
+ fclose(fp);
+
+ return retno;
+}
+
+static int parse_edd_extensions(const char *dir, struct edd_info *edd_info)
+{
+ char filename[PATH_MAX];
+ char line[1024];
+ uint16_t flags = 0;
+ FILE *fp;
+ int ret;
+
+ ret = snprintf(filename, PATH_MAX, "%s/%s", dir, "extensions");
+ if (ret < 0 || ret >= PATH_MAX) {
+ fprintf(stderr, "snprintf failed: %s\n", strerror(errno));
+ return -1;
+ }
+
+ filename[PATH_MAX-1] = 0;
+
+ fp = fopen(filename, "r");
+ if (!fp) {
+ return -errno;
+ }
+
+ while (fgets(line, 1024, fp)) {
+ /*
+ * strings are in kernel source, function edd_show_extensions()
+ * drivers/firmware/edd.c
+ */
+ if (strstr(line, "Fixed disk access") == line)
+ flags |= EDD_EXT_FIXED_DISK_ACCESS;
+ else if (strstr(line, "Device locking and ejecting") == line)
+ flags |= EDD_EXT_DEVICE_LOCKING_AND_EJECTING;
+ else if (strstr(line, "Enhanced Disk Drive support") == line)
+ flags |= EDD_EXT_ENHANCED_DISK_DRIVE_SUPPORT;
+ else if (strstr(line, "64-bit extensions") == line)
+ flags |= EDD_EXT_64BIT_EXTENSIONS;
+ }
+
+ fclose(fp);
+
+ edd_info->interface_support = flags;
+
+ return 0;
+}
+
+static int read_edd_raw_data(const char *dir, struct edd_info *edd_info)
+{
+ char filename[PATH_MAX];
+ FILE *fp;
+ size_t read_chars;
+ uint16_t len;
+ int ret;
+
+ ret = snprintf(filename, PATH_MAX, "%s/%s", dir, "raw_data");
+ if (ret < 0 || ret >= PATH_MAX) {
+ fprintf(stderr, "snprintf failed: %s\n", strerror(errno));
+ return -1;
+ }
+
+ filename[PATH_MAX-1] = 0;
+
+ fp = fopen(filename, "r");
+ if (!fp) {
+ return -errno;
+ }
+
+ memset(edd_info->edd_device_params, 0, EDD_DEVICE_PARAM_SIZE);
+ read_chars = fread(edd_info->edd_device_params, sizeof(uint8_t),
+ EDD_DEVICE_PARAM_SIZE, fp);
+ fclose(fp);
+
+ len = ((uint16_t *)edd_info->edd_device_params)[0];
+ dbgprintf("EDD raw data has length %d\n", len);
+
+ if (read_chars < len) {
+ fprintf(stderr, "BIOS reported EDD length of %hd but only "
+ "%d chars read.\n", len, (int)read_chars);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int add_edd_entry(struct x86_linux_param_header *real_mode,
+ const char *sysfs_name, int *current_edd, int *current_mbr)
+{
+ uint8_t devnum, version;
+ uint32_t mbr_sig;
+ struct edd_info *edd_info;
+
+ if (!current_mbr || !current_edd) {
+ fprintf(stderr, "%s: current_edd and current_edd "
+ "must not be NULL", __FUNCTION__);
+ return -1;
+ }
+
+ edd_info = &real_mode->eddbuf[*current_edd];
+ memset(edd_info, 0, sizeof(struct edd_info));
+
+ /* extract the device number */
+ if (sscanf(basename(sysfs_name), "int13_dev%hhx", &devnum) != 1) {
+ fprintf(stderr, "Invalid format of int13_dev dir "
+ "entry: %s\n", basename(sysfs_name));
+ return -1;
+ }
+
+ /* if there's a MBR signature, then add it */
+ if (file_scanf(sysfs_name, "mbr_signature", "0x%x", &mbr_sig) == 1) {
+ real_mode->edd_mbr_sig_buffer[*current_mbr] = mbr_sig;
+ (*current_mbr)++;
+ dbgprintf("EDD Device 0x%x: mbr_sig=0x%x\n", devnum, mbr_sig);
+ }
+
+ /* set the device number */
+ edd_info->device = devnum;
+
+ /* set the version */
+ if (file_scanf(sysfs_name, "version", "0x%hhx", &version) != 1)
+ return -1;
+
+ edd_info->version = version;
+
+ /* if version == 0, that's some kind of dummy entry */
+ if (version != 0) {
+ /* legacy_max_cylinder */
+ if (file_scanf(sysfs_name, "legacy_max_cylinder", "%hu",
+ &edd_info->legacy_max_cylinder) != 1) {
+ fprintf(stderr, "Reading legacy_max_cylinder failed.\n");
+ return -1;
+ }
+
+ /* legacy_max_head */
+ if (file_scanf(sysfs_name, "legacy_max_head", "%hhu",
+ &edd_info->legacy_max_head) != 1) {
+ fprintf(stderr, "Reading legacy_max_head failed.\n");
+ return -1;
+ }
+
+ /* legacy_sectors_per_track */
+ if (file_scanf(sysfs_name, "legacy_sectors_per_track", "%hhu",
+ &edd_info->legacy_sectors_per_track) != 1) {
+ fprintf(stderr, "Reading legacy_sectors_per_track failed.\n");
+ return -1;
+ }
+
+ /* Parse the EDD extensions */
+ if (parse_edd_extensions(sysfs_name, edd_info) != 0) {
+ fprintf(stderr, "Parsing EDD extensions failed.\n");
+ return -1;
+ }
+
+ /* Parse the raw info */
+ if (read_edd_raw_data(sysfs_name, edd_info) != 0) {
+ fprintf(stderr, "Reading EDD raw data failed.\n");
+ return -1;
+ }
+ }
+
+ (*current_edd)++;
+
+ return 0;
+}
+
+static void zero_edd(struct x86_linux_param_header *real_mode)
+{
+ real_mode->eddbuf_entries = 0;
+ real_mode->edd_mbr_sig_buf_entries = 0;
+ memset(real_mode->eddbuf, 0,
+ EDDMAXNR * sizeof(struct edd_info));
+ memset(real_mode->edd_mbr_sig_buffer, 0,
+ EDD_MBR_SIG_MAX * sizeof(uint32_t));
+}
+
+void setup_edd_info(struct x86_linux_param_header *real_mode)
+{
+ DIR *edd_dir;
+ struct dirent *cursor;
+ int current_edd = 0;
+ int current_mbr = 0;
+
+ edd_dir = opendir(EDD_SYFS_DIR);
+ if (!edd_dir) {
+ dbgprintf(EDD_SYFS_DIR " does not exist.\n");
+ return;
+ }
+
+ zero_edd(real_mode);
+ while ((cursor = readdir(edd_dir))) {
+ char full_dir_name[PATH_MAX];
+
+ /* only read the entries that start with "int13_dev" */
+ if (strstr(cursor->d_name, "int13_dev") != cursor->d_name)
+ continue;
+
+ snprintf(full_dir_name, PATH_MAX, "%s/%s",
+ EDD_SYFS_DIR, cursor->d_name);
+ full_dir_name[PATH_MAX-1] = 0;
+
+ if (add_edd_entry(real_mode, full_dir_name, &current_edd,
+ &current_mbr) != 0) {
+ zero_edd(real_mode);
+ goto out;
+ }
+ }
+
+ real_mode->eddbuf_entries = current_edd;
+ real_mode->edd_mbr_sig_buf_entries = current_mbr;
+
+out:
+ closedir(edd_dir);
+
+ dbgprintf("Added %d EDD MBR entries and %d EDD entries.\n",
+ real_mode->edd_mbr_sig_buf_entries,
+ real_mode->eddbuf_entries);
+}
+
+/*
+ * This really only makes sense for virtual filesystems that are only expected
+ * to be mounted once (sysfs, debugsfs, proc), as it will return the first
+ * instance listed in /proc/mounts, falling back to mtab if absent.
+ * We search by type and not by name because the name can be anything;
+ * while setting the name equal to the mount point is common, it cannot be
+ * relied upon, as even kernel documentation examples recommends using
+ * "none" as the name e.g. for debugfs.
+ */
+char *find_mnt_by_type(char *type)
+{
+ FILE *mtab;
+ struct mntent *mnt;
+ char *mntdir;
+
+ mtab = setmntent("/proc/mounts", "r");
+ if (!mtab) {
+ // Fall back to mtab
+ mtab = setmntent("/etc/mtab", "r");
+ }
+ if (!mtab)
+ return NULL;
+ for(mnt = getmntent(mtab); mnt; mnt = getmntent(mtab)) {
+ if (strcmp(mnt->mnt_type, type) == 0)
+ break;
+ }
+ mntdir = mnt ? strdup(mnt->mnt_dir) : NULL;
+ endmntent(mtab);
+ return mntdir;
+}
+
+int get_bootparam(void *buf, off_t offset, size_t size)
+{
+ int data_file;
+ char *debugfs_mnt, *sysfs_mnt;
+ char filename[PATH_MAX];
+ int err, has_sysfs_params = 0;
+
+ sysfs_mnt = find_mnt_by_type("sysfs");
+ if (sysfs_mnt) {
+ snprintf(filename, PATH_MAX, "%s/%s", sysfs_mnt,
+ "kernel/boot_params/data");
+ free(sysfs_mnt);
+ err = access(filename, F_OK);
+ if (!err)
+ has_sysfs_params = 1;
+ }
+
+ if (!has_sysfs_params) {
+ debugfs_mnt = find_mnt_by_type("debugfs");
+ if (!debugfs_mnt)
+ return 1;
+ snprintf(filename, PATH_MAX, "%s/%s", debugfs_mnt,
+ "boot_params/data");
+ free(debugfs_mnt);
+ }
+
+ data_file = open(filename, O_RDONLY);
+ if (data_file < 0)
+ return 1;
+ if (lseek(data_file, offset, SEEK_SET) < 0)
+ goto close;
+ read(data_file, buf, size);
+close:
+ close(data_file);
+ return 0;
+}
+
+void setup_subarch(struct x86_linux_param_header *real_mode)
+{
+ off_t offset = offsetof(typeof(*real_mode), hardware_subarch);
+
+ get_bootparam(&real_mode->hardware_subarch, offset, sizeof(uint32_t));
+}
+
+struct efi_mem_descriptor {
+ uint32_t type;
+ uint32_t pad;
+ uint64_t phys_addr;
+ uint64_t virt_addr;
+ uint64_t num_pages;
+ uint64_t attribute;
+};
+
+struct efi_setup_data {
+ uint64_t fw_vendor;
+ uint64_t runtime;
+ uint64_t tables;
+ uint64_t smbios;
+ uint64_t reserved[8];
+};
+
+struct setup_data {
+ uint64_t next;
+ uint32_t type;
+#define SETUP_NONE 0
+#define SETUP_E820_EXT 1
+#define SETUP_DTB 2
+#define SETUP_PCI 3
+#define SETUP_EFI 4
+#define SETUP_RNG_SEED 9
+ uint32_t len;
+ uint8_t data[0];
+} __attribute__((packed));
+
+static int get_efi_value(const char *filename,
+ const char *pattern, uint64_t *val)
+{
+ FILE *fp;
+ char line[1024], *s, *end;
+
+ fp = fopen(filename, "r");
+ if (!fp)
+ return 1;
+
+ while (fgets(line, sizeof(line), fp) != 0) {
+ s = strstr(line, pattern);
+ if (!s)
+ continue;
+ *val = strtoull(s + strlen(pattern), &end, 16);
+ if (*val == ULLONG_MAX) {
+ fclose(fp);
+ return 2;
+ }
+ break;
+ }
+
+ fclose(fp);
+ return 0;
+}
+
+static int get_efi_values(struct efi_setup_data *esd)
+{
+ int ret = 0;
+
+ ret = get_efi_value("/sys/firmware/efi/systab", "SMBIOS=0x",
+ &esd->smbios);
+ ret |= get_efi_value("/sys/firmware/efi/fw_vendor", "0x",
+ &esd->fw_vendor);
+ ret |= get_efi_value("/sys/firmware/efi/runtime", "0x",
+ &esd->runtime);
+ ret |= get_efi_value("/sys/firmware/efi/config_table", "0x",
+ &esd->tables);
+ return ret;
+}
+
+static int get_efi_runtime_map(struct efi_mem_descriptor **map)
+{
+ DIR *dirp;
+ struct dirent *entry;
+ char filename[1024];
+ struct efi_mem_descriptor md, *p = NULL;
+ int nr_maps = 0;
+
+ dirp = opendir("/sys/firmware/efi/runtime-map");
+ if (!dirp)
+ return 0;
+ while ((entry = readdir(dirp)) != NULL) {
+ sprintf(filename,
+ "/sys/firmware/efi/runtime-map/%s",
+ (char *)entry->d_name);
+ if (*entry->d_name == '.')
+ continue;
+ file_scanf(filename, "type", "0x%x", (unsigned int *)&md.type);
+ file_scanf(filename, "phys_addr", "0x%llx",
+ (unsigned long long *)&md.phys_addr);
+ file_scanf(filename, "virt_addr", "0x%llx",
+ (unsigned long long *)&md.virt_addr);
+ file_scanf(filename, "num_pages", "0x%llx",
+ (unsigned long long *)&md.num_pages);
+ file_scanf(filename, "attribute", "0x%llx",
+ (unsigned long long *)&md.attribute);
+ p = realloc(p, (nr_maps + 1) * sizeof(md));
+ if (!p)
+ goto err_out;
+
+ *(p + nr_maps) = md;
+ *map = p;
+ nr_maps++;
+ }
+
+ closedir(dirp);
+ return nr_maps;
+err_out:
+ if (*map)
+ free(*map);
+ closedir(dirp);
+ return 0;
+}
+
+struct efi_info {
+ uint32_t efi_loader_signature;
+ uint32_t efi_systab;
+ uint32_t efi_memdesc_size;
+ uint32_t efi_memdesc_version;
+ uint32_t efi_memmap;
+ uint32_t efi_memmap_size;
+ uint32_t efi_systab_hi;
+ uint32_t efi_memmap_hi;
+};
+
+/*
+ * Add another instance to single linked list of struct setup_data.
+ * Please refer to kernel Documentation/x86/boot.txt for more details
+ * about setup_data structure.
+ */
+static void add_setup_data(struct kexec_info *info,
+ struct x86_linux_param_header *real_mode,
+ struct setup_data *sd)
+{
+ int sdsize = sizeof(struct setup_data) + sd->len;
+
+ sd->next = real_mode->setup_data;
+ real_mode->setup_data = add_buffer(info, sd, sdsize, sdsize, getpagesize(),
+ 0x100000, ULONG_MAX, INT_MAX);
+}
+
+/*
+ * setup_efi_data will collect below data and pass them to 2nd kernel.
+ * 1) SMBIOS, fw_vendor, runtime, config_table, they are passed via x86
+ * setup_data.
+ * 2) runtime memory regions, set the memmap related fields in efi_info.
+ */
+static int setup_efi_data(struct kexec_info *info,
+ struct x86_linux_param_header *real_mode)
+{
+ int64_t memmap_paddr;
+ struct setup_data *sd;
+ struct efi_setup_data *esd;
+ struct efi_mem_descriptor *maps;
+ int nr_maps, size, ret = 0;
+ struct efi_info *ei = (struct efi_info *)real_mode->efi_info;
+
+ ret = access("/sys/firmware/efi/systab", F_OK);
+ if (ret < 0)
+ goto out;
+
+ esd = malloc(sizeof(struct efi_setup_data));
+ if (!esd) {
+ ret = 1;
+ goto out;
+ }
+ memset(esd, 0, sizeof(struct efi_setup_data));
+ ret = get_efi_values(esd);
+ if (ret)
+ goto free_esd;
+ nr_maps = get_efi_runtime_map(&maps);
+ if (!nr_maps) {
+ ret = 2;
+ goto free_esd;
+ }
+ sd = malloc(sizeof(struct setup_data) + sizeof(*esd));
+ if (!sd) {
+ ret = 3;
+ goto free_maps;
+ }
+
+ memset(sd, 0, sizeof(struct setup_data) + sizeof(*esd));
+ sd->next = 0;
+ sd->type = SETUP_EFI;
+ sd->len = sizeof(*esd);
+ memcpy(sd->data, esd, sizeof(*esd));
+ free(esd);
+
+ add_setup_data(info, real_mode, sd);
+
+ size = nr_maps * sizeof(struct efi_mem_descriptor);
+ memmap_paddr = add_buffer(info, maps, size, size, getpagesize(),
+ 0x100000, ULONG_MAX, INT_MAX);
+ ei->efi_memmap = memmap_paddr & 0xffffffff;
+ ei->efi_memmap_hi = memmap_paddr >> 32;
+ ei->efi_memmap_size = size;
+ ei->efi_memdesc_size = sizeof(struct efi_mem_descriptor);
+
+ return 0;
+free_maps:
+ free(maps);
+free_esd:
+ free(esd);
+out:
+ return ret;
+}
+
+static void add_e820_map_from_mr(struct x86_linux_param_header *real_mode,
+ struct e820entry *e820, struct memory_range *range, int nr_range)
+{
+ int i;
+
+ for (i = 0; i < nr_range; i++) {
+ e820[i].addr = range[i].start;
+ e820[i].size = range[i].end - range[i].start + 1;
+ switch (range[i].type) {
+ case RANGE_RAM:
+ e820[i].type = E820_RAM;
+ break;
+ case RANGE_ACPI:
+ e820[i].type = E820_ACPI;
+ break;
+ case RANGE_ACPI_NVS:
+ e820[i].type = E820_NVS;
+ break;
+ case RANGE_PMEM:
+ e820[i].type = E820_PMEM;
+ break;
+ case RANGE_PRAM:
+ e820[i].type = E820_PRAM;
+ break;
+ default:
+ case RANGE_RESERVED:
+ e820[i].type = E820_RESERVED;
+ break;
+ }
+ dbgprintf("%016lx-%016lx (%d)\n",
+ e820[i].addr,
+ e820[i].addr + e820[i].size - 1,
+ e820[i].type);
+
+ if (range[i].type != RANGE_RAM)
+ continue;
+ if ((range[i].start <= 0x100000) && range[i].end > 0x100000) {
+ unsigned long long mem_k = (range[i].end >> 10) - (0x100000 >> 10);
+ real_mode->ext_mem_k = mem_k;
+ real_mode->alt_mem_k = mem_k;
+ if (mem_k > 0xfc00) {
+ real_mode->ext_mem_k = 0xfc00; /* 64M */
+ }
+ if (mem_k > 0xffffffff) {
+ real_mode->alt_mem_k = 0xffffffff;
+ }
+ }
+ }
+}
+
+static void setup_e820_ext(struct kexec_info *info, struct x86_linux_param_header *real_mode,
+ struct memory_range *range, int nr_range)
+{
+ struct setup_data *sd;
+ struct e820entry *e820;
+ int nr_range_ext;
+
+ nr_range_ext = nr_range - E820MAX;
+ sd = xmalloc(sizeof(struct setup_data) + nr_range_ext * sizeof(struct e820entry));
+ sd->next = 0;
+ sd->len = nr_range_ext * sizeof(struct e820entry);
+ sd->type = SETUP_E820_EXT;
+
+ e820 = (struct e820entry *) sd->data;
+ dbgprintf("Extended E820 via setup_data:\n");
+ add_e820_map_from_mr(real_mode, e820, range + E820MAX, nr_range_ext);
+ add_setup_data(info, real_mode, sd);
+}
+
+static void setup_e820(struct kexec_info *info, struct x86_linux_param_header *real_mode)
+{
+ struct memory_range *range;
+ int nr_range, nr_range_saved;
+
+
+ if (info->kexec_flags & KEXEC_ON_CRASH && !arch_options.pass_memmap_cmdline) {
+ range = info->crash_range;
+ nr_range = info->nr_crash_ranges;
+ } else {
+ range = info->memory_range;
+ nr_range = info->memory_ranges;
+ }
+
+ nr_range_saved = nr_range;
+ if (nr_range > E820MAX) {
+ nr_range = E820MAX;
+ }
+
+ real_mode->e820_map_nr = nr_range;
+ dbgprintf("E820 memmap:\n");
+ add_e820_map_from_mr(real_mode, real_mode->e820_map, range, nr_range);
+
+ if (nr_range_saved > E820MAX) {
+ dbgprintf("extra E820 memmap are passed via setup_data\n");
+ setup_e820_ext(info, real_mode, range, nr_range_saved);
+ }
+}
+
+static void setup_rng_seed(struct kexec_info *info,
+ struct x86_linux_param_header *real_mode)
+{
+ struct {
+ struct setup_data header;
+ uint8_t rng_seed[32];
+ } *sd;
+
+ sd = xmalloc(sizeof(*sd));
+ sd->header.next = 0;
+ sd->header.len = sizeof(sd->rng_seed);
+ sd->header.type = SETUP_RNG_SEED;
+
+ if (getrandom(sd->rng_seed, sizeof(sd->rng_seed), GRND_NONBLOCK) !=
+ sizeof(sd->rng_seed))
+ return; /* Not initialized, so don't pass a seed. */
+
+ add_setup_data(info, real_mode, &sd->header);
+}
+
+static int
+get_efi_mem_desc_version(struct x86_linux_param_header *real_mode)
+{
+ struct efi_info *ei = (struct efi_info *)real_mode->efi_info;
+
+ return ei->efi_memdesc_version;
+}
+
+static void setup_efi_info(struct kexec_info *info,
+ struct x86_linux_param_header *real_mode)
+{
+ int ret, desc_version;
+ off_t offset = offsetof(typeof(*real_mode), efi_info);
+
+ ret = get_bootparam(&real_mode->efi_info, offset, 32);
+ if (ret)
+ return;
+ if (((struct efi_info *)real_mode->efi_info)->efi_memmap_size == 0)
+ /* zero filled efi_info */
+ goto out;
+ desc_version = get_efi_mem_desc_version(real_mode);
+ if (desc_version != 1) {
+ fprintf(stderr,
+ "efi memory descriptor version %d is not supported!\n",
+ desc_version);
+ goto out;
+ }
+ ret = setup_efi_data(info, real_mode);
+ if (ret)
+ goto out;
+
+ return;
+
+out:
+ memset(&real_mode->efi_info, 0, 32);
+ return;
+}
+
+void setup_linux_system_parameters(struct kexec_info *info,
+ struct x86_linux_param_header *real_mode)
+{
+ int err;
+
+ /* get subarch from running kernel */
+ setup_subarch(real_mode);
+ if (bzImage_support_efi_boot && !arch_options.noefi)
+ setup_efi_info(info, real_mode);
+
+ /* Default screen size */
+ real_mode->orig_x = 0;
+ real_mode->orig_y = 0;
+ real_mode->orig_video_page = 0;
+ real_mode->orig_video_mode = 0;
+ real_mode->orig_video_cols = 80;
+ real_mode->orig_video_lines = 25;
+ real_mode->orig_video_ega_bx = 0;
+ real_mode->orig_video_isVGA = 1;
+ real_mode->orig_video_points = 16;
+
+ /* setup vesa fb if possible, or just use original screen_info */
+ err = setup_linux_vesafb(real_mode);
+ if (err) {
+ uint16_t cl_magic, cl_offset;
+
+ /* save and restore the old cmdline param if needed */
+ cl_magic = real_mode->cl_magic;
+ cl_offset = real_mode->cl_offset;
+
+ err = get_bootparam(real_mode, 0, sizeof(struct screen_info));
+ if (!err) {
+ real_mode->cl_magic = cl_magic;
+ real_mode->cl_offset = cl_offset;
+ }
+ }
+ /* Fill in the memsize later */
+ real_mode->ext_mem_k = 0;
+ real_mode->alt_mem_k = 0;
+ real_mode->e820_map_nr = 0;
+
+ /* Default APM info */
+ memset(&real_mode->apm_bios_info, 0, sizeof(real_mode->apm_bios_info));
+ /* Default drive info */
+ memset(&real_mode->drive_info, 0, sizeof(real_mode->drive_info));
+ /* Default sysdesc table */
+ real_mode->sys_desc_table.length = 0;
+
+ /* default yes: this can be overridden on the command line */
+ real_mode->mount_root_rdonly = 0xFFFF;
+
+ /* default /dev/hda
+ * this can be overrident on the command line if necessary.
+ */
+ real_mode->root_dev = (0x3 <<8)| 0;
+
+ /* another safe default */
+ real_mode->aux_device_info = 0;
+
+ setup_e820(info, real_mode);
+
+ /* pass RNG seed */
+ setup_rng_seed(info, real_mode);
+
+ /* fill the EDD information */
+ setup_edd_info(real_mode);
+
+ /* Always try to fill acpi_rsdp_addr */
+ real_mode->acpi_rsdp_addr = get_acpi_rsdp();
+}
+
+void setup_linux_dtb(struct kexec_info *info, struct x86_linux_param_header *real_mode,
+ const char *dtb_buf, int dtb_len)
+{
+ struct setup_data *sd;
+
+ sd = xmalloc(sizeof(struct setup_data) + dtb_len);
+ sd->next = 0;
+ sd->len = dtb_len;
+ sd->type = SETUP_DTB;
+ memcpy(sd->data, dtb_buf, dtb_len);
+
+
+ add_setup_data(info, real_mode, sd);
+}
diff --git a/kexec/arch/i386/x86-linux-setup.h b/kexec/arch/i386/x86-linux-setup.h
new file mode 100644
index 0000000..b5e1ad5
--- /dev/null
+++ b/kexec/arch/i386/x86-linux-setup.h
@@ -0,0 +1,38 @@
+#ifndef X86_LINUX_SETUP_H
+#define X86_LINUX_SETUP_H
+#include <x86/x86-linux.h>
+
+void init_linux_parameters(struct x86_linux_param_header *real_mode);
+void setup_linux_bootloader_parameters_high(
+ struct kexec_info *info, struct x86_linux_param_header *real_mode,
+ unsigned long real_mode_base, unsigned long cmdline_offset,
+ const char *cmdline, off_t cmdline_len,
+ const char *initrd_buf, off_t initrd_size, int initrd_high);
+static inline void setup_linux_bootloader_parameters(
+ struct kexec_info *info, struct x86_linux_param_header *real_mode,
+ unsigned long real_mode_base, unsigned long cmdline_offset,
+ const char *cmdline, off_t cmdline_len,
+ const char *initrd_buf, off_t initrd_size)
+{
+ setup_linux_bootloader_parameters_high(info,
+ real_mode, real_mode_base,
+ cmdline_offset, cmdline, cmdline_len,
+ initrd_buf, initrd_size, 0);
+}
+void setup_linux_system_parameters(struct kexec_info *info,
+ struct x86_linux_param_header *real_mode);
+void setup_linux_dtb(struct kexec_info *info, struct x86_linux_param_header *real_mode,
+ const char *dtb_buf, int dtb_len);
+int get_bootparam(void *buf, off_t offset, size_t size);
+
+
+#define SETUP_BASE 0x90000
+#define KERN32_BASE 0x100000 /* 1MB */
+#define INITRD_BASE 0x1000000 /* 16MB */
+
+/* command line parameter may be appended by purgatory */
+#define PURGATORY_CMDLINE_SIZE 64
+extern int bzImage_support_efi_boot;
+extern struct arch_options_t arch_options;
+
+#endif /* X86_LINUX_SETUP_H */
diff --git a/kexec/arch/ia64/Makefile b/kexec/arch/ia64/Makefile
new file mode 100644
index 0000000..f5b212b
--- /dev/null
+++ b/kexec/arch/ia64/Makefile
@@ -0,0 +1,16 @@
+#
+# kexec ia64 (linux booting linux)
+#
+ia64_KEXEC_SRCS = kexec/arch/ia64/kexec-iomem.c
+ia64_KEXEC_SRCS += kexec/arch/ia64/kexec-ia64.c
+ia64_KEXEC_SRCS += kexec/arch/ia64/kexec-elf-ia64.c
+ia64_KEXEC_SRCS += kexec/arch/ia64/kexec-elf-rel-ia64.c
+ia64_KEXEC_SRCS += kexec/arch/ia64/crashdump-ia64.c
+
+ia64_PROC_IOMEM =
+
+dist += kexec/arch/ia64/Makefile $(ia64_KEXEC_SRCS) \
+ kexec/arch/ia64/kexec-ia64.h kexec/arch/ia64/crashdump-ia64.h \
+ kexec/arch/ia64/include/arch/options.h
+
+
diff --git a/kexec/arch/ia64/crashdump-ia64.c b/kexec/arch/ia64/crashdump-ia64.c
new file mode 100644
index 0000000..755ee5e
--- /dev/null
+++ b/kexec/arch/ia64/crashdump-ia64.c
@@ -0,0 +1,293 @@
+/*
+ * kexec: crashdump support
+ * Copyright (C) 2005-2006 Zou Nan hai <nanhai.zou@intel.com> Intel Corp
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "kexec-ia64.h"
+#include "crashdump-ia64.h"
+#include "../kexec/crashdump.h"
+
+int memory_ranges = 0;
+#define LOAD_OFFSET (0xa000000000000000UL + 0x100000000UL - \
+ kernel_code_start)
+
+static struct crash_elf_info elf_info =
+{
+ class: ELFCLASS64,
+ data: ELFDATA2LSB,
+ machine: EM_IA_64,
+ page_offset: PAGE_OFFSET,
+};
+
+/* Stores a sorted list of RAM memory ranges for which to create elf headers.
+ * A separate program header is created for backup region.
+ * The number of entries in memory_range array is always smaller than
+ * the number of entries in the file returned by proc_iomem(),
+ * stored in max_memory_ranges. */
+static struct memory_range *crash_memory_range;
+/* Memory region reserved for storing panic kernel and other data. */
+static struct memory_range crash_reserved_mem;
+unsigned long elfcorehdr;
+static unsigned long kernel_code_start;
+static unsigned long kernel_code_end;
+struct loaded_segment {
+ unsigned long start;
+ unsigned long end;
+};
+
+#define MAX_LOAD_SEGMENTS 128
+struct loaded_segment loaded_segments[MAX_LOAD_SEGMENTS];
+
+unsigned long loaded_segments_num, loaded_segments_base;
+static int seg_comp(const void *a, const void *b)
+{
+ const struct loaded_segment *x = a, *y = b;
+ /* avoid overflow */
+ if (x->start > y->start) return 1;
+ if (x->start < y->start) return -1;
+ return 0;
+}
+
+/* purgatory code need this info to patch the EFI memmap
+ */
+static void add_loaded_segments_info(struct mem_ehdr *ehdr)
+{
+ unsigned i = 0;
+ while(i < ehdr->e_phnum) {
+ struct mem_phdr *phdr;
+ phdr = &ehdr->e_phdr[i];
+ if (phdr->p_type != PT_LOAD) {
+ i++;
+ continue;
+ }
+
+ loaded_segments[loaded_segments_num].start =
+ _ALIGN_DOWN(phdr->p_paddr, ELF_PAGE_SIZE);
+ loaded_segments[loaded_segments_num].end =
+ loaded_segments[loaded_segments_num].start;
+
+ /* Consolidate consecutive PL_LOAD segments into one.
+ * The end addr of the last PL_LOAD segment, calculated by
+ * adding p_memsz to p_paddr & rounded up to ELF_PAGE_SIZE,
+ * will be the end address of this loaded_segments entry.
+ */
+ while (i < ehdr->e_phnum) {
+ phdr = &ehdr->e_phdr[i];
+ if (phdr->p_type != PT_LOAD)
+ break;
+ loaded_segments[loaded_segments_num].end =
+ _ALIGN(phdr->p_paddr + phdr->p_memsz,
+ ELF_PAGE_SIZE);
+ i++;
+ }
+ loaded_segments_num++;
+ }
+}
+
+/* Removes crash reserve region from list of memory chunks for whom elf program
+ * headers have to be created. Assuming crash reserve region to be a single
+ * continuous area fully contained inside one of the memory chunks */
+static int exclude_crash_reserve_region(int *nr_ranges)
+{
+ int i, j, tidx = -1;
+ unsigned long cstart, cend;
+ struct memory_range temp_region;
+
+ /* Crash reserved region. */
+ cstart = crash_reserved_mem.start;
+ cend = crash_reserved_mem.end;
+
+ for (i = 0; i < (*nr_ranges); i++) {
+ unsigned long mstart, mend;
+ mstart = crash_memory_range[i].start;
+ mend = crash_memory_range[i].end;
+ if (cstart < mend && cend > mstart) {
+ if (cstart != mstart && cend != mend) {
+ /* Split memory region */
+ crash_memory_range[i].end = cstart - 1;
+ temp_region.start = cend + 1;
+ temp_region.end = mend;
+ temp_region.type = RANGE_RAM;
+ tidx = i+1;
+ } else if (cstart != mstart)
+ crash_memory_range[i].end = cstart - 1;
+ else
+ crash_memory_range[i].start = cend + 1;
+ }
+ }
+ /* Insert split memory region, if any. */
+ if (tidx >= 0) {
+ if (*nr_ranges == max_memory_ranges) {
+ /* No space to insert another element. */
+ fprintf(stderr, "Error: Number of crash memory ranges"
+ " excedeed the max limit\n");
+ return -1;
+ }
+ for (j = (*nr_ranges - 1); j >= tidx; j--)
+ crash_memory_range[j+1] = crash_memory_range[j];
+ crash_memory_range[tidx].start = temp_region.start;
+ crash_memory_range[tidx].end = temp_region.end;
+ crash_memory_range[tidx].type = temp_region.type;
+ (*nr_ranges)++;
+ }
+ return 0;
+}
+
+static int get_crash_memory_ranges(int *ranges)
+{
+ const char *iomem = proc_iomem();
+ char line[MAX_LINE];
+ FILE *fp;
+ unsigned long start, end;
+
+ crash_memory_range = xmalloc(sizeof(struct memory_range) *
+ max_memory_ranges);
+ fp = fopen(iomem, "r");
+ if (!fp) {
+ fprintf(stderr, "Cannot open %s: %s\n",
+ iomem, strerror(errno));
+ return -1;
+ }
+ while(fgets(line, sizeof(line), fp) != 0) {
+ char *str;
+ int type, consumed, count;
+ if (memory_ranges >= max_memory_ranges)
+ break;
+ count = sscanf(line, "%lx-%lx : %n",
+ &start, &end, &consumed);
+ str = line + consumed;
+ if (count != 2)
+ continue;
+
+ if (memcmp(str, "System RAM\n", 11) == 0) {
+ type = RANGE_RAM;
+ } else if (memcmp(str, "Crash kernel\n", 13) == 0) {
+ /* Reserved memory region. New kernel can
+ * use this region to boot into. */
+ crash_reserved_mem.start = start;
+ crash_reserved_mem.end = end;
+ crash_reserved_mem.type = RANGE_RAM;
+ continue;
+ }
+ else if (memcmp(str, "Kernel code\n", 12) == 0) {
+ kernel_code_start = start;
+ kernel_code_end = end;
+ continue;
+ } else if (memcmp(str, "Uncached RAM\n", 13) == 0) {
+ type = RANGE_UNCACHED;
+ } else {
+ continue;
+ }
+ crash_memory_range[memory_ranges].start = start;
+ crash_memory_range[memory_ranges].end = end;
+ crash_memory_range[memory_ranges].type = type;
+ memory_ranges++;
+ }
+ fclose(fp);
+ if (exclude_crash_reserve_region(&memory_ranges) < 0)
+ return -1;
+ *ranges = memory_ranges;
+ return 0;
+}
+
+/*
+ * Note that this assignes a malloced pointer to *cmdline,
+ * which is likely never freed by the caller
+ */
+static void
+cmdline_add_elfcorehdr(const char **cmdline, unsigned long addr)
+{
+ char *str;
+ char buf[64];
+ size_t len;
+ sprintf(buf, " elfcorehdr=%ldK", addr/1024);
+ len = strlen(*cmdline) + strlen(buf) + 1;
+ str = xmalloc(len);
+ sprintf(str, "%s%s", *cmdline, buf);
+ *cmdline = str;
+}
+
+int load_crashdump_segments(struct kexec_info *info, struct mem_ehdr *ehdr,
+ unsigned long max_addr, unsigned long min_base,
+ const char **cmdline)
+{
+ int nr_ranges;
+ unsigned long sz;
+ size_t size;
+ void *tmp;
+ if (info->kexec_flags & KEXEC_ON_CRASH &&
+ get_crash_memory_ranges(&nr_ranges) == 0) {
+ int i;
+
+ elf_info.kern_paddr_start = kernel_code_start;
+ for (i=0; i < nr_ranges; i++) {
+ unsigned long long mstart = crash_memory_range[i].start;
+ unsigned long long mend = crash_memory_range[i].end;
+ if (!mstart && !mend)
+ continue;
+ if (kernel_code_start >= mstart &&
+ kernel_code_start < mend) {
+ elf_info.kern_vaddr_start = mstart + LOAD_OFFSET;
+ break;
+ }
+ }
+ elf_info.kern_size = kernel_code_end - kernel_code_start + 1;
+ if (crash_create_elf64_headers(info, &elf_info,
+ crash_memory_range, nr_ranges,
+ &tmp, &sz, EFI_PAGE_SIZE) < 0)
+ return -1;
+
+ elfcorehdr = add_buffer(info, tmp, sz, sz, EFI_PAGE_SIZE,
+ min_base, max_addr, -1);
+ loaded_segments[loaded_segments_num].start = elfcorehdr;
+ loaded_segments[loaded_segments_num].end = elfcorehdr + sz;
+ loaded_segments_num++;
+ cmdline_add_elfcorehdr(cmdline, elfcorehdr);
+ }
+ add_loaded_segments_info(ehdr);
+ size = sizeof(struct loaded_segment) * loaded_segments_num;
+ qsort(loaded_segments, loaded_segments_num,
+ sizeof(struct loaded_segment), seg_comp);
+ loaded_segments_base = add_buffer(info, loaded_segments,
+ size, size, 16, 0, max_addr, -1);
+
+ elf_rel_set_symbol(&info->rhdr, "__loaded_segments",
+ &loaded_segments_base, sizeof(long));
+ elf_rel_set_symbol(&info->rhdr, "__loaded_segments_num",
+ &loaded_segments_num, sizeof(long));
+ return 0;
+}
+
+int is_crashkernel_mem_reserved(void)
+{
+ uint64_t start, end;
+
+ return parse_iomem_single("Crash kernel\n", &start,
+ &end) == 0 ? (start != end) : 0;
+}
+
+int get_crash_kernel_load_range(uint64_t *start, uint64_t *end)
+{
+ return parse_iomem_single("Crash kernel\n", start, end);
+}
diff --git a/kexec/arch/ia64/crashdump-ia64.h b/kexec/arch/ia64/crashdump-ia64.h
new file mode 100644
index 0000000..72ba054
--- /dev/null
+++ b/kexec/arch/ia64/crashdump-ia64.h
@@ -0,0 +1,12 @@
+#ifndef CRASHDUMP_IA64_H
+#define CRASHDUMP_IA64_H
+
+#define PAGE_OFFSET 0xe000000000000000UL
+#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET)
+extern int load_crashdump_segments(struct kexec_info *info,
+ struct mem_ehdr *ehdr, unsigned long max_addr,
+ unsigned long min_base, const char **cmdline);
+
+#define CRASH_MAX_MEMMAP_NR (KEXEC_MAX_SEGMENTS + 1)
+
+#endif
diff --git a/kexec/arch/ia64/include/arch/options.h b/kexec/arch/ia64/include/arch/options.h
new file mode 100644
index 0000000..e8754ad
--- /dev/null
+++ b/kexec/arch/ia64/include/arch/options.h
@@ -0,0 +1,42 @@
+#ifndef KEXEC_ARCH_IA64_OPTIONS_H
+#define KEXEC_ARCH_IA64_OPTIONS_H
+
+#define OPT_ARCH_MAX (OPT_MAX+0)
+#define OPT_APPEND (OPT_ARCH_MAX+0)
+#define OPT_RAMDISK (OPT_ARCH_MAX+1)
+#define OPT_NOIO (OPT_ARCH_MAX+2)
+#define OPT_VMM (OPT_ARCH_MAX+3)
+
+/* Options relevant to the architecture (excluding loader-specific ones),
+ * in this case none:
+ */
+#define KEXEC_ARCH_OPTIONS \
+ KEXEC_OPTIONS \
+
+#define KEXEC_ARCH_OPT_STR KEXEC_OPT_STR ""
+
+/* The following two #defines list ALL of the options added by all of the
+ * architecture's loaders.
+ * o main() uses this complete list to scan for its options, ignoring
+ * arch-specific/loader-specific ones.
+ * o Then, arch_process_options() uses this complete list to scan for its
+ * options, ignoring general/loader-specific ones.
+ * o Then, the file_type[n].load re-scans for options, using
+ * KEXEC_ARCH_OPTIONS plus its loader-specific options subset.
+ * Any unrecognised options cause an error here.
+ *
+ * This is done so that main()'s/arch_process_options()'s getopt_long() calls
+ * don't choose a kernel filename from random arguments to options they don't
+ * recognise -- as they now recognise (if not act upon) all possible options.
+ */
+#define KEXEC_ALL_OPTIONS \
+ KEXEC_ARCH_OPTIONS \
+ {"command-line", 1, 0, OPT_APPEND}, \
+ {"append", 1, 0, OPT_APPEND}, \
+ {"initrd", 1, 0, OPT_RAMDISK}, \
+ {"noio", 0, 0, OPT_NOIO}, \
+ {"vmm", 1, 0, OPT_VMM}, \
+
+#define KEXEC_ALL_OPT_STR KEXEC_OPT_STR
+
+#endif /* KEXEC_ARCH_IA64_OPTIONS_H */
diff --git a/kexec/arch/ia64/kexec-elf-ia64.c b/kexec/arch/ia64/kexec-elf-ia64.c
new file mode 100644
index 0000000..142dee3
--- /dev/null
+++ b/kexec/arch/ia64/kexec-elf-ia64.c
@@ -0,0 +1,303 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2003,2004 Eric Biederman (ebiederm@xmission.com)
+ * Copyright (C) 2004 Albert Herranz
+ * Copyright (C) 2004 Silicon Graphics, Inc.
+ * Jesse Barnes <jbarnes@sgi.com>
+ * Copyright (C) 2004 Khalid Aziz <khalid.aziz@hp.com> Hewlett Packard Co
+ * Copyright (C) 2005 Zou Nan hai <nanhai.zou@intel.com> Intel Corp
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _GNU_SOURCE
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <limits.h>
+#include <elf.h>
+#include <boot/elf_boot.h>
+#include <ip_checksum.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "../../kexec-elf.h"
+#include "kexec-ia64.h"
+#include "crashdump-ia64.h"
+#include <arch/options.h>
+
+static const int probe_debug = 0;
+extern unsigned long saved_efi_memmap_size;
+
+/*
+ * elf_ia64_probe - sanity check the elf image
+ *
+ * Make sure that the file image has a reasonable chance of working.
+ */
+int elf_ia64_probe(const char *buf, off_t len)
+{
+ struct mem_ehdr ehdr;
+ int result;
+ result = build_elf_exec_info(buf, len, &ehdr, 0);
+ if (result < 0) {
+ if (probe_debug) {
+ fprintf(stderr, "Not an ELF executable\n");
+ }
+ return -1;
+ }
+ /* Verify the architecuture specific bits */
+ if (ehdr.e_machine != EM_IA_64) {
+ /* for a different architecture */
+ if (probe_debug) {
+ fprintf(stderr, "Not for this architecture.\n");
+ }
+ return -1;
+ }
+ return 0;
+}
+
+void elf_ia64_usage(void)
+{
+ printf(" --command-line=STRING Set the kernel command line to "
+ "STRING.\n"
+ " --append=STRING Set the kernel command line to "
+ "STRING.\n"
+ " --initrd=FILE Use FILE as the kernel's initial "
+ "ramdisk.\n"
+ " --noio Disable I/O in purgatory code.\n"
+ " --vmm=FILE Use FILE as the kernel image for a\n"
+ " virtual machine monitor "
+ "(aka hypervisor)\n");
+}
+
+/* Move the crash kerenl physical offset to reserved region
+ */
+void move_loaded_segments(struct mem_ehdr *ehdr, unsigned long addr)
+{
+ unsigned i;
+ long offset = 0;
+ int found = 0;
+ struct mem_phdr *phdr;
+ for(i = 0; i < ehdr->e_phnum; i++) {
+ phdr = &ehdr->e_phdr[i];
+ if (phdr->p_type == PT_LOAD) {
+ offset = addr - phdr->p_paddr;
+ found++;
+ break;
+ }
+ }
+ if (!found)
+ die("move_loaded_segments: no PT_LOAD region 0x%016x\n", addr);
+ ehdr->e_entry += offset;
+ for(i = 0; i < ehdr->e_phnum; i++) {
+ phdr = &ehdr->e_phdr[i];
+ if (phdr->p_type == PT_LOAD)
+ phdr->p_paddr += offset;
+ }
+}
+
+int elf_ia64_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ struct mem_ehdr ehdr;
+ const char *command_line, *ramdisk=0, *vmm=0, *kernel_buf;
+ char *ramdisk_buf = NULL;
+ off_t ramdisk_size = 0, kernel_size;
+ unsigned long command_line_len;
+ unsigned long entry, max_addr, gp_value;
+ unsigned long command_line_base, ramdisk_base, image_base;
+ unsigned long efi_memmap_base, efi_memmap_size;
+ unsigned long boot_param_base;
+ unsigned long noio=0;
+ int result;
+ int opt;
+ char *efi_memmap_buf, *boot_param;
+
+ /* See options.h -- add any more there, too. */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ {"command-line", 1, 0, OPT_APPEND},
+ {"append", 1, 0, OPT_APPEND},
+ {"initrd", 1, 0, OPT_RAMDISK},
+ {"noio", 0, 0, OPT_NOIO},
+ {"vmm", 1, 0, OPT_VMM},
+ {0, 0, 0, 0},
+ };
+
+ static const char short_options[] = KEXEC_ARCH_OPT_STR "";
+
+ command_line = 0;
+ while ((opt = getopt_long(argc, argv, short_options,
+ options, 0)) != -1) {
+ switch (opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX) {
+ break;
+ }
+ case OPT_APPEND:
+ command_line = optarg;
+ break;
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+ case OPT_NOIO: /* disable PIO and MMIO in purgatory code*/
+ noio = 1;
+ break;
+ case OPT_VMM:
+ vmm = optarg;
+ break;
+ }
+ }
+ command_line_len = 0;
+ if (command_line) {
+ command_line_len = strlen(command_line) + 16;
+ }
+
+ if (vmm)
+ kernel_buf = slurp_decompress_file(vmm, &kernel_size);
+ else {
+ kernel_buf = buf;
+ kernel_size = len;
+ }
+
+ /* Parse the Elf file */
+ result = build_elf_exec_info(kernel_buf, kernel_size, &ehdr, 0);
+ if (result < 0) {
+ fprintf(stderr, "ELF parse failed\n");
+ free_elf_info(&ehdr);
+ return result;
+ }
+
+ if (info->kexec_flags & KEXEC_ON_CRASH ) {
+ if ((mem_min == 0x00) && (mem_max == ULONG_MAX)) {
+ fprintf(stderr, "Failed to find crash kernel region "
+ "in %s\n", proc_iomem());
+ free_elf_info(&ehdr);
+ return -1;
+ }
+ move_loaded_segments(&ehdr, mem_min);
+ } else if (update_loaded_segments(&ehdr) < 0) {
+ fprintf(stderr, "Failed to place kernel\n");
+ return -1;
+ }
+
+ entry = ehdr.e_entry;
+ max_addr = elf_max_addr(&ehdr);
+
+ /* Load the Elf data */
+ result = elf_exec_load(&ehdr, info);
+ if (result < 0) {
+ fprintf(stderr, "ELF load failed\n");
+ free_elf_info(&ehdr);
+ return result;
+ }
+
+
+ /* Load the setup code */
+ elf_rel_build_load(info, &info->rhdr, purgatory, purgatory_size,
+ 0x0, ULONG_MAX, -1, 0);
+
+
+ if (load_crashdump_segments(info, &ehdr, max_addr, 0,
+ &command_line) < 0)
+ return -1;
+
+ // reverve 4k for ia64_boot_param
+ boot_param = xmalloc(4096);
+ boot_param_base = add_buffer(info, boot_param, 4096, 4096, 4096, 0,
+ max_addr, -1);
+
+ elf_rel_set_symbol(&info->rhdr, "__noio",
+ &noio, sizeof(long));
+
+ elf_rel_set_symbol(&info->rhdr, "__boot_param_base",
+ &boot_param_base, sizeof(long));
+
+ // reserve efi_memmap of actual size allocated in production kernel
+ efi_memmap_size = saved_efi_memmap_size;
+ efi_memmap_buf = xmalloc(efi_memmap_size);
+ efi_memmap_base = add_buffer(info, efi_memmap_buf,
+ efi_memmap_size, efi_memmap_size, 4096, 0,
+ max_addr, -1);
+
+ elf_rel_set_symbol(&info->rhdr, "__efi_memmap_base",
+ &efi_memmap_base, sizeof(long));
+
+ elf_rel_set_symbol(&info->rhdr, "__efi_memmap_size",
+ &efi_memmap_size, sizeof(long));
+ if (command_line) {
+ command_line_len = strlen(command_line) + 1;
+ }
+ if (command_line_len || (info->kexec_flags & KEXEC_ON_CRASH )) {
+ char *cmdline = xmalloc(command_line_len);
+ strcpy(cmdline, command_line);
+
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ char buf[128];
+ sprintf(buf," max_addr=%lluM min_addr=%lluM",
+ mem_max>>20, mem_min>>20);
+ command_line_len = strlen(cmdline) + strlen(buf) + 1;
+ cmdline = xrealloc(cmdline, command_line_len);
+ strcat(cmdline, buf);
+ }
+
+ command_line_len = _ALIGN(command_line_len, 16);
+ command_line_base = add_buffer(info, cmdline,
+ command_line_len, command_line_len,
+ getpagesize(), 0UL,
+ max_addr, -1);
+ elf_rel_set_symbol(&info->rhdr, "__command_line_len",
+ &command_line_len, sizeof(long));
+ elf_rel_set_symbol(&info->rhdr, "__command_line",
+ &command_line_base, sizeof(long));
+ }
+
+ if (ramdisk) {
+ ramdisk_buf = slurp_file(ramdisk, &ramdisk_size);
+ ramdisk_base = add_buffer(info, ramdisk_buf, ramdisk_size,
+ ramdisk_size,
+ getpagesize(), 0, max_addr, -1);
+ elf_rel_set_symbol(&info->rhdr, "__ramdisk_base",
+ &ramdisk_base, sizeof(long));
+ elf_rel_set_symbol(&info->rhdr, "__ramdisk_size",
+ &ramdisk_size, sizeof(long));
+ }
+
+ if (vmm) {
+ image_base = add_buffer(info, buf, len, len,
+ getpagesize(), 0, max_addr, -1);
+ elf_rel_set_symbol(&info->rhdr, "__vmcode_base",
+ &image_base, sizeof(long));
+ elf_rel_set_symbol(&info->rhdr, "__vmcode_size",
+ &len, sizeof(long));
+ }
+
+ gp_value = info->rhdr.rel_addr + 0x200000;
+ elf_rel_set_symbol(&info->rhdr, "__gp_value", &gp_value,
+ sizeof(gp_value));
+
+ elf_rel_set_symbol(&info->rhdr, "__kernel_entry", &entry,
+ sizeof(entry));
+ free_elf_info(&ehdr);
+ return 0;
+}
diff --git a/kexec/arch/ia64/kexec-elf-rel-ia64.c b/kexec/arch/ia64/kexec-elf-rel-ia64.c
new file mode 100644
index 0000000..500f247
--- /dev/null
+++ b/kexec/arch/ia64/kexec-elf-rel-ia64.c
@@ -0,0 +1,160 @@
+/*
+ * Copyright (C) 2005-2006 Zou Nan hai (nanhai.zou@intel.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/* pugatory relocation code
+ * Most of the code in this file is
+ * based on arch/ia64/kernel/module.c in Linux kernel
+ */
+
+
+/* Most of the code in this file is
+ * based on arch/ia64/kernel/module.c in Linux kernel
+ */
+
+#include <stdio.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+
+#define MAX_LTOFF ((uint64_t) (1 << 22))
+
+int machine_verify_elf_rel(struct mem_ehdr *ehdr)
+{
+ if (ehdr->ei_data != ELFDATA2LSB) {
+ return 0;
+ }
+ if (ehdr->ei_class != ELFCLASS64) {
+ return 0;
+ }
+ if (ehdr->e_machine != EM_IA_64) {
+ return 0;
+ }
+ return 1;
+}
+
+static void
+ia64_patch (uint64_t insn_addr, uint64_t mask, uint64_t val)
+{
+ uint64_t m0, m1, v0, v1, b0, b1, *b = (uint64_t *) (insn_addr & -16);
+# define insn_mask ((1UL << 41) - 1)
+ unsigned long shift;
+
+ b0 = b[0]; b1 = b[1];
+ shift = 5 + 41 * (insn_addr % 16); /* 5 bits of template, then 3 x 41-bit instructions */
+ if (shift >= 64) {
+ m1 = mask << (shift - 64);
+ v1 = val << (shift - 64);
+ } else {
+ m0 = mask << shift; m1 = mask >> (64 - shift);
+ v0 = val << shift; v1 = val >> (64 - shift);
+ b[0] = (b0 & ~m0) | (v0 & m0);
+ }
+ b[1] = (b1 & ~m1) | (v1 & m1);
+}
+
+static inline uint64_t
+bundle (const uint64_t insn)
+{
+ return insn & ~0xfUL;
+}
+
+void machine_apply_elf_rel(struct mem_ehdr *ehdr,
+ struct mem_sym *UNUSED(sym), unsigned long r_type, void *location,
+ unsigned long address, unsigned long value)
+{
+ uint64_t gp_value = ehdr->rel_addr + 0x200000;
+ switch(r_type) {
+ case R_IA64_NONE:
+ break;
+ case R_IA64_SEGREL64LSB:
+ case R_IA64_DIR64LSB:
+ *((uint64_t *)location) = value;
+ break;
+ case R_IA64_DIR32LSB:
+ *((uint32_t *)location) = value;
+ if (value != *((uint32_t *)location))
+ goto overflow;
+ break;
+ case R_IA64_IMM64:
+ ia64_patch((uint64_t)location, 0x01fffefe000UL,
+ /* bit 63 -> 36 */
+ (((value & 0x8000000000000000UL) >> 27)
+ /* bit 21 -> 21 */
+ | ((value & 0x0000000000200000UL) << 0)
+ /* bit 16 -> 22 */
+ | ((value & 0x00000000001f0000UL) << 6)
+ /* bit 7 -> 27 */
+ | ((value & 0x000000000000ff80UL) << 20)
+ /* bit 0 -> 13 */
+ | ((value & 0x000000000000007fUL) << 13)));
+ ia64_patch((uint64_t)location - 1, 0x1ffffffffffUL, value>>22);
+ break;
+ case R_IA64_IMM22:
+ if (value + (1 << 21) >= (1 << 22))
+ die("value out of IMM22 range\n");
+ ia64_patch((uint64_t)location, 0x01fffcfe000UL,
+ /* bit 21 -> 36 */
+ (((value & 0x200000UL) << 15)
+ /* bit 16 -> 22 */
+ | ((value & 0x1f0000UL) << 6)
+ /* bit 7 -> 27 */
+ | ((value & 0x00ff80UL) << 20)
+ /* bit 0 -> 13 */
+ | ((value & 0x00007fUL) << 13) ));
+ break;
+ case R_IA64_PCREL21B: {
+ uint64_t delta = ((int64_t)value - (int64_t)address)/16;
+ if (delta + (1 << 20) >= (1 << 21))
+ die("value out of IMM21B range\n");
+ value = ((int64_t)(value - bundle(address)))/16;
+ ia64_patch((uint64_t)location, 0x11ffffe000UL,
+ (((value & 0x100000UL) << 16) /* bit 20 -> 36 */
+ | ((value & 0x0fffffUL) << 13) /* bit 0 -> 13 */));
+ }
+ break;
+ case R_IA64_PCREL64LSB: {
+ value = value - address;
+ put_unaligned(value, (uint64_t *)location);
+ } break;
+ case R_IA64_GPREL22:
+ case R_IA64_LTOFF22X:
+ if (value - gp_value + MAX_LTOFF/2 >= MAX_LTOFF)
+ die("value out of gp relative range");
+ value -= gp_value;
+ ia64_patch((uint64_t)location, 0x01fffcfe000UL,
+ (((value & 0x200000UL) << 15) /* bit 21 -> 36 */
+ |((value & 0x1f0000UL) << 6) /* bit 16 -> 22 */
+ |((value & 0x00ff80UL) << 20) /* bit 7 -> 27 */
+ |((value & 0x00007fUL) << 13) /* bit 0 -> 13 */));
+ break;
+ case R_IA64_LDXMOV:
+ if (value - gp_value + MAX_LTOFF/2 >= MAX_LTOFF)
+ die("value out of gp relative range");
+ ia64_patch((uint64_t)location, 0x1fff80fe000UL, 0x10000000000UL);
+ break;
+ case R_IA64_LTOFF22:
+
+ default:
+ die("Unknown rela relocation: 0x%lx 0x%lx\n",
+ r_type, address);
+ break;
+ }
+ return;
+overflow:
+ die("overflow in relocation type %lu val %llx\n",
+ r_type, value);
+}
diff --git a/kexec/arch/ia64/kexec-ia64.c b/kexec/arch/ia64/kexec-ia64.c
new file mode 100644
index 0000000..418d997
--- /dev/null
+++ b/kexec/arch/ia64/kexec-ia64.c
@@ -0,0 +1,247 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2003-2005 Eric Biederman (ebiederm@xmission.com)
+ * Copyright (C) 2004 Albert Herranz
+ * Copyright (C) 2004 Silicon Graphics, Inc.
+ * Jesse Barnes <jbarnes@sgi.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _GNU_SOURCE
+#include <stddef.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <getopt.h>
+#include <sched.h>
+#include <limits.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "elf.h"
+#include "kexec-ia64.h"
+#include <arch/options.h>
+
+/* The number of entries in memory_range array is always smaller than
+ * the number of entries in the file returned by proc_iomem(),
+ * stored in max_memory_ranges. */
+static struct memory_range *memory_range;
+int max_memory_ranges;
+static int memory_ranges;
+unsigned long saved_efi_memmap_size;
+
+/* Reserve range for EFI memmap and Boot parameter */
+static int split_range(int range, unsigned long start, unsigned long end)
+{
+ unsigned long ram_end = memory_range[range - 1].end;
+ unsigned int type = memory_range[range - 1].type;
+ int i;
+ //align end and start to page size of EFI
+ start = _ALIGN_DOWN(start, 1UL<<12);
+ end = _ALIGN(end, 1UL<<12);
+ for (i = 0; i < range; i++)
+ if(memory_range[i].start <= start && memory_range[i].end >=end)
+ break;
+ if (i >= range)
+ return range;
+ range = i;
+ if (memory_range[range].start < start) {
+ memory_range[range].end = start;
+ range++;
+ }
+ memory_range[range].start = start;
+ memory_range[range].end = end;
+ memory_range[range].type = RANGE_RESERVED;
+ range++;
+ if (end < ram_end) {
+ memory_range[range].start = end;
+ memory_range[range].end = ram_end;
+ memory_range[range].type = type;
+ range++;
+ }
+ return range;
+}
+
+/* Return a sorted list of available memory ranges. */
+int get_memory_ranges(struct memory_range **range, int *ranges,
+ unsigned long kexec_flags)
+{
+ const char *iomem = proc_iomem();
+ char line[MAX_LINE];
+ FILE *fp;
+ fp = fopen(iomem, "r");
+ if (!fp) {
+ fprintf(stderr, "Cannot open %s: %s\n",
+ iomem, strerror(errno));
+ return -1;
+ }
+
+ /* allocate memory_range dynamically */
+ max_memory_ranges = 0;
+ while(fgets(line, sizeof(line), fp) != 0) {
+ max_memory_ranges++;
+ }
+ memory_range = xmalloc(sizeof(struct memory_range) *
+ max_memory_ranges);
+ rewind(fp);
+
+ while(fgets(line, sizeof(line), fp) != 0) {
+ unsigned long start, end;
+ char *str;
+ unsigned type;
+ int consumed;
+ int count;
+ if (memory_ranges >= max_memory_ranges)
+ break;
+ count = sscanf(line, "%lx-%lx : %n",
+ &start, &end, &consumed);
+ if (count != 2)
+ continue;
+ str = line + consumed;
+ end = end + 1;
+ if (memcmp(str, "System RAM\n", 11) == 0) {
+ type = RANGE_RAM;
+ }
+ else if (memcmp(str, "reserved\n", 9) == 0) {
+ type = RANGE_RESERVED;
+ }
+ else if (memcmp(str, "Crash kernel\n", 13) == 0) {
+ /* Redefine the memory region boundaries if kernel
+ * exports the limits and if it is panic kernel.
+ * Override user values only if kernel exported
+ * values are subset of user defined values.
+ */
+
+ if (kexec_flags & KEXEC_ON_CRASH) {
+ if (start > mem_min)
+ mem_min = start;
+ if (end < mem_max)
+ mem_max = end;
+ }
+ continue;
+ } else if (memcmp(str, "Boot parameter\n", 14) == 0) {
+ memory_ranges = split_range(memory_ranges, start, end);
+ continue;
+ } else if (memcmp(str, "EFI Memory Map\n", 14) == 0) {
+ memory_ranges = split_range(memory_ranges, start, end);
+ saved_efi_memmap_size = end - start;
+ continue;
+ } else if (memcmp(str, "Uncached RAM\n", 13) == 0) {
+ type = RANGE_UNCACHED;
+ } else {
+ continue;
+ }
+ /*
+ * Check if this memory range can be coalesced with
+ * the previous range
+ */
+ if ((memory_ranges > 0) &&
+ (start == memory_range[memory_ranges-1].end) &&
+ (type == memory_range[memory_ranges-1].type)) {
+ memory_range[memory_ranges-1].end = end;
+ }
+ else {
+ memory_range[memory_ranges].start = start;
+ memory_range[memory_ranges].end = end;
+ memory_range[memory_ranges].type = type;
+ memory_ranges++;
+ }
+ }
+ fclose(fp);
+ *range = memory_range;
+ *ranges = memory_ranges;
+
+ return 0;
+}
+
+/* Supported file types and callbacks */
+struct file_type file_type[] = {
+ {"elf-ia64", elf_ia64_probe, elf_ia64_load, elf_ia64_usage},
+};
+int file_types = sizeof(file_type) / sizeof(file_type[0]);
+
+
+void arch_usage(void)
+{
+}
+
+int arch_process_options(int argc, char **argv)
+{
+ /* This doesn't belong here! Some sort of arch_init() ? */
+
+ /* execute from monarch processor */
+ cpu_set_t affinity;
+ CPU_ZERO(&affinity);
+ CPU_SET(0, &affinity);
+ sched_setaffinity(0, sizeof(affinity), &affinity);
+
+ return 0;
+}
+
+const struct arch_map_entry arches[] = {
+ { "ia64", KEXEC_ARCH_IA_64 },
+ { NULL, 0 },
+};
+
+int arch_compat_trampoline(struct kexec_info *UNUSED(info))
+{
+ return 0;
+}
+
+int update_loaded_segments(struct mem_ehdr *ehdr)
+{
+ int i;
+ unsigned u;
+ struct mem_phdr *phdr;
+ unsigned long start_addr = ULONG_MAX, end_addr = 0;
+ unsigned long align = 1UL<<26; /* 64M */
+ unsigned long start, end;
+
+ for (u = 0; u < ehdr->e_phnum; u++) {
+ phdr = &ehdr->e_phdr[u];
+ if (phdr->p_type != PT_LOAD)
+ continue;
+ if (phdr->p_paddr < start_addr)
+ start_addr = phdr->p_paddr;
+ if ((phdr->p_paddr + phdr->p_memsz) > end_addr)
+ end_addr = phdr->p_paddr + phdr->p_memsz;
+ }
+
+ for (i = 0; i < memory_ranges && memory_range[i].start <= start_addr;
+ i++) {
+ if (memory_range[i].type == RANGE_RAM &&
+ memory_range[i].end > end_addr)
+ return 0;
+ }
+
+ for (i = 0; i < memory_ranges; i++) {
+ if (memory_range[i].type != RANGE_RAM)
+ continue;
+ start = _ALIGN(memory_range[i].start, align);
+ end = memory_range[i].end;
+ if (end > start && (end - start) > (end_addr - start_addr)) {
+ move_loaded_segments(ehdr, start);
+ return 0;
+ }
+ }
+
+ return -1;
+}
+
+void arch_update_purgatory(struct kexec_info *UNUSED(info))
+{
+}
+
diff --git a/kexec/arch/ia64/kexec-ia64.h b/kexec/arch/ia64/kexec-ia64.h
new file mode 100644
index 0000000..31e4041
--- /dev/null
+++ b/kexec/arch/ia64/kexec-ia64.h
@@ -0,0 +1,14 @@
+#ifndef KEXEC_IA64_H
+#define KEXEC_IA64_H
+
+extern int max_memory_ranges;
+int elf_ia64_probe(const char *buf, off_t len);
+int elf_ia64_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void elf_ia64_usage(void);
+int update_loaded_segments(struct mem_ehdr *ehdr);
+void move_loaded_segments(struct mem_ehdr *ehdr, unsigned long addr);
+
+#define EFI_PAGE_SIZE (1UL<<12)
+#define ELF_PAGE_SIZE (1UL<<16)
+#endif /* KEXEC_IA64_H */
diff --git a/kexec/arch/ia64/kexec-iomem.c b/kexec/arch/ia64/kexec-iomem.c
new file mode 100644
index 0000000..7fd50cd
--- /dev/null
+++ b/kexec/arch/ia64/kexec-iomem.c
@@ -0,0 +1,23 @@
+#include <stdint.h>
+#include <stdio.h>
+#include "../../kexec.h"
+#include "../../crashdump.h"
+
+static const char proc_iomem_str[]= "/proc/iomem";
+static const char proc_iomem_machine_str[]= "/proc/iomem_machine";
+
+/*
+ * On IA64 XEN the EFI tables are virtualised.
+ * For this reason on such systems /proc/iomem_machine is provided,
+ * which is based on the hypervisor's (machine's) EFI tables.
+ * If Xen is in use, then /proc/iomem is used for memory regions relating
+ * to the currently running dom0 kernel, and /proc/iomem_machine is used
+ * for regions relating to the machine itself or the hypervisor.
+ * If Xen is not in used, then /proc/iomem used.
+ */
+const char *proc_iomem(void)
+{
+ if (xen_present())
+ return proc_iomem_machine_str;
+ return proc_iomem_str;
+}
diff --git a/kexec/arch/loongarch/Makefile b/kexec/arch/loongarch/Makefile
new file mode 100644
index 0000000..3b33b96
--- /dev/null
+++ b/kexec/arch/loongarch/Makefile
@@ -0,0 +1,22 @@
+#
+# kexec loongarch (linux booting linux)
+#
+loongarch_KEXEC_SRCS = kexec/arch/loongarch/kexec-loongarch.c
+loongarch_KEXEC_SRCS += kexec/arch/loongarch/kexec-elf-loongarch.c
+loongarch_KEXEC_SRCS += kexec/arch/loongarch/kexec-pei-loongarch.c
+loongarch_KEXEC_SRCS += kexec/arch/loongarch/kexec-elf-rel-loongarch.c
+loongarch_KEXEC_SRCS += kexec/arch/loongarch/crashdump-loongarch.c
+
+loongarch_MEM_REGIONS = kexec/mem_regions.c
+
+loongarch_CPPFLAGS += -I $(srcdir)/kexec/
+
+loongarch_ADD_BUFFER =
+loongarch_ADD_SEGMENT =
+loongarch_VIRT_TO_PHYS =
+
+dist += kexec/arch/loongarch/Makefile $(loongarch_KEXEC_SRCS) \
+ kexec/arch/loongarch/kexec-loongarch.h \
+ kexec/arch/loongarch/image-header.h \
+ kexec/arch/loongarch/crashdump-loongarch.h \
+ kexec/arch/loongarch/include/arch/options.h
diff --git a/kexec/arch/loongarch/crashdump-loongarch.c b/kexec/arch/loongarch/crashdump-loongarch.c
new file mode 100644
index 0000000..81250e4
--- /dev/null
+++ b/kexec/arch/loongarch/crashdump-loongarch.c
@@ -0,0 +1,220 @@
+/*
+ * LoongArch crashdump.
+ *
+ * Copyright (C) 2022 Loongson Technology Corporation Limited.
+ * Youling Tang <tangyouling@loongson.cn>
+ *
+ * derived from crashdump-arm64.c
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+#define _GNU_SOURCE
+
+#include <errno.h>
+#include <linux/elf.h>
+
+#include "kexec.h"
+#include "crashdump.h"
+#include "crashdump-loongarch.h"
+#include "iomem.h"
+#include "kexec-loongarch.h"
+#include "kexec-elf.h"
+#include "mem_regions.h"
+
+/* memory ranges of crashed kernel */
+static struct memory_ranges system_memory_rgns;
+
+/* memory range reserved for crashkernel */
+struct memory_range crash_reserved_mem[CRASH_MAX_RESERVED_RANGES];
+struct memory_ranges usablemem_rgns = {
+ .size = 0,
+ .max_size = CRASH_MAX_RESERVED_RANGES,
+ .ranges = crash_reserved_mem,
+};
+
+struct memory_range elfcorehdr_mem;
+
+static struct crash_elf_info elf_info64 = {
+ .class = ELFCLASS64,
+ .data = ELFDATA2LSB,
+ .machine = EM_LOONGARCH,
+ .page_offset = PAGE_OFFSET,
+};
+
+/*
+ * iomem_range_callback() - callback called for each iomem region
+ * @data: not used
+ * @nr: not used
+ * @str: name of the memory region
+ * @base: start address of the memory region
+ * @length: size of the memory region
+ *
+ * This function is called once for each memory region found in /proc/iomem.
+ * It locates system RAM and crashkernel reserved memory and places these to
+ * variables, respectively, system_memory_rgns and usablemem_rgns.
+ */
+
+static int iomem_range_callback(void *UNUSED(data), int UNUSED(nr),
+ char *str, unsigned long long base,
+ unsigned long long length)
+{
+ if (strncmp(str, CRASH_KERNEL, strlen(CRASH_KERNEL)) == 0)
+ return mem_regions_alloc_and_add(&usablemem_rgns,
+ base, length, RANGE_RAM);
+ else if (strncmp(str, SYSTEM_RAM, strlen(SYSTEM_RAM)) == 0)
+ return mem_regions_alloc_and_add(&system_memory_rgns,
+ base, length, RANGE_RAM);
+ else if (strncmp(str, KERNEL_CODE, strlen(KERNEL_CODE)) == 0)
+ elf_info64.kern_paddr_start = base;
+ else if (strncmp(str, KERNEL_DATA, strlen(KERNEL_DATA)) == 0)
+ elf_info64.kern_size = base + length - elf_info64.kern_paddr_start;
+
+ return 0;
+}
+
+int is_crashkernel_mem_reserved(void)
+{
+ if (!usablemem_rgns.size)
+ kexec_iomem_for_each_line(NULL, iomem_range_callback, NULL);
+
+ return usablemem_rgns.size;
+}
+
+/*
+ * crash_get_memory_ranges() - read system physical memory
+ *
+ * Function reads through system physical memory and stores found memory
+ * regions in system_memory_ranges.
+ * Regions are sorted in ascending order.
+ *
+ * Returns 0 in case of success and a negative value otherwise.
+ */
+static int crash_get_memory_ranges(void)
+{
+ int i;
+
+ /*
+ * First read all memory regions that can be considered as
+ * system memory including the crash area.
+ */
+ if (!usablemem_rgns.size)
+ kexec_iomem_for_each_line(NULL, iomem_range_callback, NULL);
+
+ /* allow one or two regions for crash dump kernel */
+ if (!usablemem_rgns.size)
+ return -EINVAL;
+
+ dbgprint_mem_range("Reserved memory range",
+ usablemem_rgns.ranges, usablemem_rgns.size);
+
+ for (i = 0; i < usablemem_rgns.size; i++) {
+ if (mem_regions_alloc_and_exclude(&system_memory_rgns,
+ &crash_reserved_mem[i])) {
+ fprintf(stderr, "Cannot allocate memory for ranges\n");
+ return -ENOMEM;
+ }
+ }
+
+ /*
+ * Make sure that the memory regions are sorted.
+ */
+ mem_regions_sort(&system_memory_rgns);
+
+ dbgprint_mem_range("Coredump memory ranges",
+ system_memory_rgns.ranges, system_memory_rgns.size);
+
+ /*
+ * For additional kernel code/data segment.
+ * kern_paddr_start/kern_size are determined in iomem_range_callback
+ */
+ elf_info64.kern_vaddr_start = get_kernel_sym("_text");
+ if (!elf_info64.kern_vaddr_start)
+ elf_info64.kern_vaddr_start = UINT64_MAX;
+
+ return 0;
+}
+
+/*
+ * load_crashdump_segments() - load the elf core header
+ * @info: kexec info structure
+ *
+ * This function creates and loads an additional segment of elf core header
+ : which is used to construct /proc/vmcore on crash dump kernel.
+ *
+ * Return 0 in case of success and -1 in case of error.
+ */
+
+int load_crashdump_segments(struct kexec_info *info)
+{
+ unsigned long elfcorehdr;
+ unsigned long bufsz;
+ void *buf;
+ int err;
+
+ /*
+ * First fetch all the memory (RAM) ranges that we are going to
+ * pass to the crash dump kernel during panic.
+ */
+
+ err = crash_get_memory_ranges();
+
+ if (err)
+ return EFAILED;
+
+ err = crash_create_elf64_headers(info, &elf_info64,
+ system_memory_rgns.ranges, system_memory_rgns.size,
+ &buf, &bufsz, ELF_CORE_HEADER_ALIGN);
+
+ if (err)
+ return EFAILED;
+
+ elfcorehdr = add_buffer(info, buf, bufsz, bufsz, 1024,
+ crash_reserved_mem[usablemem_rgns.size - 1].start,
+ crash_reserved_mem[usablemem_rgns.size - 1].end, -1);
+
+ elfcorehdr_mem.start = elfcorehdr;
+ elfcorehdr_mem.end = elfcorehdr + bufsz - 1;
+
+ dbgprintf("%s: elfcorehdr 0x%llx-0x%llx\n", __func__,
+ elfcorehdr_mem.start, elfcorehdr_mem.end);
+
+ return 0;
+}
+
+/*
+ * e_entry and p_paddr are actually in virtual address space.
+ * Those values will be translated to physcal addresses by using
+ * virt_to_phys() in add_segment().
+ * So let's fix up those values for later use so the memory base will be
+ * correctly replaced with crash_reserved_mem[usablemem_rgns.size - 1].start.
+ */
+void fixup_elf_addrs(struct mem_ehdr *ehdr)
+{
+ struct mem_phdr *phdr;
+ int i;
+
+ ehdr->e_entry += crash_reserved_mem[usablemem_rgns.size - 1].start;
+
+ for (i = 0; i < ehdr->e_phnum; i++) {
+ phdr = &ehdr->e_phdr[i];
+ if (phdr->p_type != PT_LOAD)
+ continue;
+ phdr->p_paddr += crash_reserved_mem[usablemem_rgns.size - 1].start;
+ }
+}
+
+int get_crash_kernel_load_range(uint64_t *start, uint64_t *end)
+{
+ if (!usablemem_rgns.size)
+ kexec_iomem_for_each_line(NULL, iomem_range_callback, NULL);
+
+ if (!usablemem_rgns.size)
+ return -1;
+
+ *start = crash_reserved_mem[usablemem_rgns.size - 1].start;
+ *end = crash_reserved_mem[usablemem_rgns.size - 1].end;
+
+ return 0;
+}
diff --git a/kexec/arch/loongarch/crashdump-loongarch.h b/kexec/arch/loongarch/crashdump-loongarch.h
new file mode 100644
index 0000000..25ff24b
--- /dev/null
+++ b/kexec/arch/loongarch/crashdump-loongarch.h
@@ -0,0 +1,26 @@
+#ifndef CRASHDUMP_LOONGARCH_H
+#define CRASHDUMP_LOONGARCH_H
+
+struct kexec_info;
+extern struct memory_ranges usablemem_rgns;
+extern struct memory_range crash_reserved_mem[];
+extern struct memory_range elfcorehdr_mem;
+
+int load_crashdump_segments(struct kexec_info *info);
+int is_crashkernel_mem_reserved(void);
+void fixup_elf_addrs(struct mem_ehdr *ehdr);
+int get_crash_kernel_load_range(uint64_t *start, uint64_t *end);
+
+#define PAGE_OFFSET 0x9000000000000000ULL
+#define MAXMEM 0
+
+#define CRASH_MAX_MEMMAP_NR (KEXEC_MAX_SEGMENTS + 1)
+#define CRASH_MAX_MEMORY_RANGES (MAX_MEMORY_RANGES + 2)
+
+/* crash dump kernel support at most two regions, low_region and high region. */
+#define CRASH_MAX_RESERVED_RANGES 2
+
+#define COMMAND_LINE_SIZE 512
+
+extern struct arch_options_t arch_options;
+#endif /* CRASHDUMP_LOONGARCH_H */
diff --git a/kexec/arch/loongarch/image-header.h b/kexec/arch/loongarch/image-header.h
new file mode 100644
index 0000000..3b75765
--- /dev/null
+++ b/kexec/arch/loongarch/image-header.h
@@ -0,0 +1,79 @@
+/*
+ * LoongArch binary image header.
+ */
+
+#if !defined(__LOONGARCH_IMAGE_HEADER_H)
+#define __LOONGARCH_IMAGE_HEADER_H
+
+#include <endian.h>
+#include <stdint.h>
+
+/**
+ * struct loongarch_image_header
+ *
+ * @pe_sig: Optional PE format 'MZ' signature.
+ * @reserved_1: Reserved.
+ * @kernel_entry: Kernel image entry pointer.
+ * @image_size: An estimated size of the memory image size in LSB byte order.
+ * @text_offset: The image load offset in LSB byte order.
+ * @reserved_2: Reserved.
+ * @reserved_3: Reserved.
+ * @pe_header: Optional offset to a PE format header.
+ **/
+
+struct loongarch_image_header {
+ uint8_t pe_sig[2];
+ uint16_t reserved_1[3];
+ uint64_t kernel_entry;
+ uint64_t image_size;
+ uint64_t text_offset;
+ uint64_t reserved_2[3];
+ uint32_t reserved_3;
+ uint32_t pe_header;
+};
+
+static const uint8_t loongarch_image_pe_sig[2] = {'M', 'Z'};
+
+/**
+ * loongarch_header_check_pe_sig - Helper to check the loongarch image header.
+ *
+ * Returns non-zero if 'MZ' signature is found.
+ */
+
+static inline int loongarch_header_check_pe_sig(const struct loongarch_image_header *h)
+{
+ if (!h)
+ return 0;
+
+ return (h->pe_sig[0] == loongarch_image_pe_sig[0]
+ && h->pe_sig[1] == loongarch_image_pe_sig[1]);
+}
+
+static inline uint64_t loongarch_header_text_offset(
+ const struct loongarch_image_header *h)
+{
+ if (!h)
+ return 0;
+
+ return le64toh(h->text_offset);
+}
+
+static inline uint64_t loongarch_header_image_size(
+ const struct loongarch_image_header *h)
+{
+ if (!h)
+ return 0;
+
+ return le64toh(h->image_size);
+}
+
+static inline uint64_t loongarch_header_kernel_entry(
+ const struct loongarch_image_header *h)
+{
+ if (!h)
+ return 0;
+
+ return le64toh(h->kernel_entry);
+}
+
+#endif
diff --git a/kexec/arch/loongarch/include/arch/options.h b/kexec/arch/loongarch/include/arch/options.h
new file mode 100644
index 0000000..25a7dc1
--- /dev/null
+++ b/kexec/arch/loongarch/include/arch/options.h
@@ -0,0 +1,28 @@
+#ifndef KEXEC_ARCH_LOONGARCH_OPTIONS_H
+#define KEXEC_ARCH_LOONGARCH_OPTIONS_H
+
+#define OPT_APPEND ((OPT_MAX)+0)
+#define OPT_INITRD ((OPT_MAX)+1)
+#define OPT_REUSE_CMDLINE ((OPT_MAX)+2)
+#define OPT_ARCH_MAX ((OPT_MAX)+3)
+
+#define KEXEC_ARCH_OPTIONS \
+ KEXEC_OPTIONS \
+ { "append", 1, NULL, OPT_APPEND }, \
+ { "command-line", 1, NULL, OPT_APPEND }, \
+ { "initrd", 1, NULL, OPT_INITRD }, \
+ { "ramdisk", 1, NULL, OPT_INITRD }, \
+ { "reuse-cmdline", 0, NULL, OPT_REUSE_CMDLINE }, \
+
+#define KEXEC_ARCH_OPT_STR KEXEC_OPT_STR /* Only accept long arch options. */
+#define KEXEC_ALL_OPTIONS KEXEC_ARCH_OPTIONS
+#define KEXEC_ALL_OPT_STR KEXEC_ARCH_OPT_STR
+
+static const char loongarch_opts_usage[] __attribute__ ((unused)) =
+" --append=STRING Set the kernel command line to STRING.\n"
+" --command-line=STRING Set the kernel command line to STRING.\n"
+" --initrd=FILE Use FILE as the kernel initial ramdisk.\n"
+" --ramdisk=FILE Use FILE as the kernel initial ramdisk.\n"
+" --reuse-cmdline Use kernel command line from running system.\n";
+
+#endif /* KEXEC_ARCH_LOONGARCH_OPTIONS_H */
diff --git a/kexec/arch/loongarch/kexec-elf-loongarch.c b/kexec/arch/loongarch/kexec-elf-loongarch.c
new file mode 100644
index 0000000..45387ca
--- /dev/null
+++ b/kexec/arch/loongarch/kexec-elf-loongarch.c
@@ -0,0 +1,125 @@
+/*
+ * kexec-elf-loongarch.c - kexec Elf loader for loongarch
+ *
+ * Copyright (C) 2022 Loongson Technology Corporation Limited.
+ * Youling Tang <tangyouling@loongson.cn>
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+*/
+
+#define _GNU_SOURCE
+
+#include <limits.h>
+#include <errno.h>
+#include <elf.h>
+
+#include "kexec.h"
+#include "kexec-elf.h"
+#include "kexec-syscall.h"
+#include "crashdump-loongarch.h"
+#include "kexec-loongarch.h"
+#include "arch/options.h"
+
+off_t initrd_base, initrd_size;
+
+int elf_loongarch_probe(const char *kernel_buf, off_t kernel_size)
+{
+ struct mem_ehdr ehdr;
+ int result;
+
+ result = build_elf_exec_info(kernel_buf, kernel_size, &ehdr, 0);
+ if (result < 0) {
+ dbgprintf("%s: Not an ELF executable.\n", __func__);
+ goto out;
+ }
+
+ /* Verify the architecuture specific bits. */
+ if (ehdr.e_machine != EM_LOONGARCH) {
+ dbgprintf("%s: Not an LoongArch ELF executable.\n", __func__);
+ result = -1;
+ goto out;
+ }
+
+ result = 0;
+out:
+ free_elf_info(&ehdr);
+ return result;
+}
+
+int elf_loongarch_load(int argc, char **argv, const char *kernel_buf,
+ off_t kernel_size, struct kexec_info *info)
+{
+ const struct loongarch_image_header *header = NULL;
+ unsigned long kernel_segment;
+ struct mem_ehdr ehdr;
+ int result;
+
+ result = build_elf_exec_info(kernel_buf, kernel_size, &ehdr, 0);
+
+ if (result < 0) {
+ dbgprintf("%s: build_elf_exec_info failed\n", __func__);
+ goto exit;
+ }
+
+ kernel_segment = loongarch_locate_kernel_segment(info);
+
+ if (kernel_segment == ULONG_MAX) {
+ dbgprintf("%s: Kernel segment is not allocated\n", __func__);
+ result = EFAILED;
+ goto exit;
+ }
+
+ dbgprintf("%s: kernel_segment: %016lx\n", __func__, kernel_segment);
+ dbgprintf("%s: image_size: %016lx\n", __func__,
+ kernel_size);
+ dbgprintf("%s: text_offset: %016lx\n", __func__,
+ loongarch_mem.text_offset);
+ dbgprintf("%s: phys_offset: %016lx\n", __func__,
+ loongarch_mem.phys_offset);
+ dbgprintf("%s: PE format: %s\n", __func__,
+ (loongarch_header_check_pe_sig(header) ? "yes" : "no"));
+
+ /* create and initialize elf core header segment */
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ result = load_crashdump_segments(info);
+ if (result) {
+ dbgprintf("%s: Creating eflcorehdr failed.\n",
+ __func__);
+ goto exit;
+ }
+ }
+
+ /* load the kernel */
+ if (info->kexec_flags & KEXEC_ON_CRASH)
+ /*
+ * offset addresses in elf header in order to load
+ * vmlinux (elf_exec) into crash kernel's memory.
+ */
+ fixup_elf_addrs(&ehdr);
+
+ info->entry = (void *)virt_to_phys(ehdr.e_entry);
+
+ result = elf_exec_load(&ehdr, info);
+
+ if (result) {
+ dbgprintf("%s: elf_exec_load failed\n", __func__);
+ goto exit;
+ }
+
+ /* load additional data */
+ result = loongarch_load_other_segments(info, kernel_segment + kernel_size);
+
+exit:
+ free_elf_info(&ehdr);
+ if (result)
+ fprintf(stderr, "kexec: Bad elf image file, load failed.\n");
+ return result;
+}
+
+void elf_loongarch_usage(void)
+{
+ printf(
+" An LoongArch ELF image, little endian.\n"
+" Typically vmlinux or a stripped version of vmlinux.\n\n");
+}
diff --git a/kexec/arch/loongarch/kexec-elf-rel-loongarch.c b/kexec/arch/loongarch/kexec-elf-rel-loongarch.c
new file mode 100644
index 0000000..59f7f5d
--- /dev/null
+++ b/kexec/arch/loongarch/kexec-elf-rel-loongarch.c
@@ -0,0 +1,42 @@
+/*
+ * kexec-elf-rel-loongarch.c - kexec Elf relocation routines
+ *
+ * Copyright (C) 2022 Loongson Technology Corporation Limited.
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+*/
+
+#include <stdio.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+
+int machine_verify_elf_rel(struct mem_ehdr *ehdr)
+{
+ if (ehdr->ei_data != ELFDATA2MSB)
+ return 0;
+
+ if (ehdr->ei_class != ELFCLASS32)
+ return 0;
+
+ if (ehdr->e_machine != EM_LOONGARCH)
+ return 0;
+
+ return 1;
+}
+
+void machine_apply_elf_rel(struct mem_ehdr *UNUSED(ehdr),
+ struct mem_sym *UNUSED(sym),
+ unsigned long r_type,
+ void *UNUSED(location),
+ unsigned long UNUSED(address),
+ unsigned long UNUSED(value))
+{
+ switch (r_type) {
+
+ default:
+ die("Unknown rela relocation: %lu\n", r_type);
+ break;
+ }
+}
diff --git a/kexec/arch/loongarch/kexec-loongarch.c b/kexec/arch/loongarch/kexec-loongarch.c
new file mode 100644
index 0000000..f47c998
--- /dev/null
+++ b/kexec/arch/loongarch/kexec-loongarch.c
@@ -0,0 +1,375 @@
+/*
+ * kexec-loongarch.c - kexec for loongarch
+ *
+ * Copyright (C) 2022 Loongson Technology Corporation Limited.
+ * Youling Tang <tangyouling@loongson.cn>
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+#include <assert.h>
+#include <errno.h>
+#include <getopt.h>
+#include <inttypes.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <linux/elf-em.h>
+#include <elf.h>
+#include <elf_info.h>
+
+#include "kexec.h"
+#include "kexec-loongarch.h"
+#include "crashdump-loongarch.h"
+#include "iomem.h"
+#include "kexec-syscall.h"
+#include "mem_regions.h"
+#include "arch/options.h"
+
+#define CMDLINE_PREFIX "kexec "
+static char cmdline[COMMAND_LINE_SIZE] = CMDLINE_PREFIX;
+
+/* Adds "initrd=start,size" parameters to command line. */
+static int cmdline_add_initrd(char *cmdline, unsigned long addr,
+ unsigned long size)
+{
+ int cmdlen, len;
+ char str[50], *ptr;
+
+ ptr = str;
+ strcpy(str, " initrd=");
+ ptr += strlen(str);
+ ultoa(addr, ptr);
+ strcat(str, ",");
+ ptr = str + strlen(str);
+ ultoa(size, ptr);
+ len = strlen(str);
+ cmdlen = strlen(cmdline) + len;
+ if (cmdlen > (COMMAND_LINE_SIZE - 1))
+ die("Command line overflow\n");
+ strcat(cmdline, str);
+
+ return 0;
+}
+
+/* Adds the appropriate "mem=size@start" options to command line, indicating the
+ * memory region the new kernel can use to boot into. */
+static int cmdline_add_mem(char *cmdline, unsigned long addr,
+ unsigned long size)
+{
+ int cmdlen, len;
+ char str[50], *ptr;
+
+ addr = addr/1024;
+ size = size/1024;
+ ptr = str;
+ strcpy(str, " mem=");
+ ptr += strlen(str);
+ ultoa(size, ptr);
+ strcat(str, "K@");
+ ptr = str + strlen(str);
+ ultoa(addr, ptr);
+ strcat(str, "K");
+ len = strlen(str);
+ cmdlen = strlen(cmdline) + len;
+ if (cmdlen > (COMMAND_LINE_SIZE - 1))
+ die("Command line overflow\n");
+ strcat(cmdline, str);
+
+ return 0;
+}
+
+/* Adds the "elfcorehdr=size@start" command line parameter to command line. */
+static int cmdline_add_elfcorehdr(char *cmdline, unsigned long addr,
+ unsigned long size)
+{
+ int cmdlen, len;
+ char str[50], *ptr;
+
+ addr = addr/1024;
+ size = size/1024;
+ ptr = str;
+ strcpy(str, " elfcorehdr=");
+ ptr += strlen(str);
+ ultoa(size, ptr);
+ strcat(str, "K@");
+ ptr = str + strlen(str);
+ ultoa(addr, ptr);
+ strcat(str, "K");
+ len = strlen(str);
+ cmdlen = strlen(cmdline) + len;
+ if (cmdlen > (COMMAND_LINE_SIZE - 1))
+ die("Command line overflow\n");
+ strcat(cmdline, str);
+
+ return 0;
+}
+
+/* Return a sorted list of memory ranges. */
+static struct memory_range memory_range[MAX_MEMORY_RANGES];
+
+int get_memory_ranges(struct memory_range **range, int *ranges,
+ unsigned long UNUSED(kexec_flags))
+{
+ int memory_ranges = 0;
+
+ const char *iomem = proc_iomem();
+ char line[MAX_LINE];
+ FILE *fp;
+ unsigned long long start, end;
+ char *str;
+ int type, consumed, count;
+
+ fp = fopen(iomem, "r");
+ if (!fp) {
+ fprintf(stderr, "Cannot open %s: %s\n", iomem, strerror(errno));
+ return -1;
+ }
+
+ while (fgets(line, sizeof(line), fp) != 0) {
+ if (memory_ranges >= MAX_MEMORY_RANGES)
+ break;
+ count = sscanf(line, "%llx-%llx : %n", &start, &end, &consumed);
+ if (count != 2)
+ continue;
+ str = line + consumed;
+ end = end + 1;
+ if (!strncmp(str, SYSTEM_RAM, strlen(SYSTEM_RAM)))
+ type = RANGE_RAM;
+ else if (!strncmp(str, IOMEM_RESERVED, strlen(IOMEM_RESERVED)))
+ type = RANGE_RESERVED;
+ else
+ continue;
+
+ if (memory_ranges > 0 &&
+ memory_range[memory_ranges - 1].end == start &&
+ memory_range[memory_ranges - 1].type == type) {
+ memory_range[memory_ranges - 1].end = end;
+ } else {
+ memory_range[memory_ranges].start = start;
+ memory_range[memory_ranges].end = end;
+ memory_range[memory_ranges].type = type;
+ memory_ranges++;
+ }
+ }
+ fclose(fp);
+ *range = memory_range;
+ *ranges = memory_ranges;
+
+ dbgprint_mem_range("MEMORY RANGES:", *range, *ranges);
+ return 0;
+}
+
+struct file_type file_type[] = {
+ {"elf-loongarch", elf_loongarch_probe, elf_loongarch_load, elf_loongarch_usage},
+ {"pei-loongarch", pei_loongarch_probe, pei_loongarch_load, pei_loongarch_usage},
+};
+int file_types = sizeof(file_type) / sizeof(file_type[0]);
+
+/* loongarch global varables. */
+
+struct loongarch_mem loongarch_mem;
+
+/**
+ * loongarch_process_image_header - Process the loongarch image header.
+ */
+
+int loongarch_process_image_header(const struct loongarch_image_header *h)
+{
+
+ if (!loongarch_header_check_pe_sig(h))
+ return EFAILED;
+
+ if (h->image_size) {
+ loongarch_mem.text_offset = loongarch_header_text_offset(h);
+ loongarch_mem.image_size = loongarch_header_image_size(h);
+ }
+
+ return 0;
+}
+
+void arch_usage(void)
+{
+ printf(loongarch_opts_usage);
+}
+
+struct arch_options_t arch_options = {
+ .core_header_type = CORE_TYPE_ELF64,
+};
+
+int arch_process_options(int argc, char **argv)
+{
+ static const char short_options[] = KEXEC_ARCH_OPT_STR "";
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { 0 },
+ };
+ int opt;
+ char *cmdline = NULL;
+ const char *append = NULL;
+
+ while ((opt = getopt_long(argc, argv, short_options,
+ options, 0)) != -1) {
+ switch (opt) {
+ case OPT_APPEND:
+ append = optarg;
+ break;
+ case OPT_REUSE_CMDLINE:
+ cmdline = get_command_line();
+ remove_parameter(cmdline, "kexec");
+ remove_parameter(cmdline, "initrd");
+ break;
+ case OPT_INITRD:
+ arch_options.initrd_file = optarg;
+ break;
+ default:
+ break;
+ }
+ }
+
+ arch_options.command_line = concat_cmdline(cmdline, append);
+
+ dbgprintf("%s:%d: command_line: %s\n", __func__, __LINE__,
+ arch_options.command_line);
+ dbgprintf("%s:%d: initrd: %s\n", __func__, __LINE__,
+ arch_options.initrd_file);
+
+ return 0;
+}
+
+const struct arch_map_entry arches[] = {
+ { "loongarch64", KEXEC_ARCH_LOONGARCH },
+ { NULL, 0 },
+};
+
+unsigned long loongarch_locate_kernel_segment(struct kexec_info *info)
+{
+ unsigned long hole;
+
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ unsigned long hole_end;
+
+ hole = (crash_reserved_mem[usablemem_rgns.size - 1].start < mem_min ?
+ mem_min : crash_reserved_mem[usablemem_rgns.size - 1].start) +
+ loongarch_mem.text_offset;
+ hole = _ALIGN_UP(hole, MiB(1));
+ hole_end = hole + loongarch_mem.text_offset + loongarch_mem.image_size;
+
+ if ((hole_end > mem_max) ||
+ (hole_end > crash_reserved_mem[usablemem_rgns.size - 1].end)) {
+ dbgprintf("%s: Crash kernel out of range\n", __func__);
+ hole = ULONG_MAX;
+ }
+ } else {
+ hole = locate_hole(info,
+ loongarch_mem.text_offset + loongarch_mem.image_size,
+ MiB(1), 0, ULONG_MAX, 1);
+
+ if (hole == ULONG_MAX)
+ dbgprintf("%s: locate_hole failed\n", __func__);
+ }
+
+ return hole;
+}
+
+/*
+ * loongarch_load_other_segments - Prepare the initrd and cmdline segments.
+ */
+
+int loongarch_load_other_segments(struct kexec_info *info, unsigned long hole_min)
+{
+ unsigned long initrd_min, hole_max;
+ char *initrd_buf = NULL;
+ unsigned long pagesize = getpagesize();
+
+ if (arch_options.command_line) {
+ if (strlen(arch_options.command_line) >
+ sizeof(cmdline) - 1) {
+ fprintf(stderr,
+ "Kernel command line too long for kernel!\n");
+ return EFAILED;
+ }
+
+ strncat(cmdline, arch_options.command_line, sizeof(cmdline) - 1);
+ }
+
+ /* Put the other segments after the image. */
+
+ initrd_min = hole_min;
+ if (info->kexec_flags & KEXEC_ON_CRASH)
+ hole_max = crash_reserved_mem[usablemem_rgns.size - 1].end;
+ else
+ hole_max = ULONG_MAX;
+
+ if (arch_options.initrd_file) {
+
+ initrd_buf = slurp_decompress_file(arch_options.initrd_file, &initrd_size);
+
+ initrd_base = add_buffer(info, initrd_buf, initrd_size,
+ initrd_size, sizeof(void *),
+ _ALIGN_UP(initrd_min,
+ pagesize), hole_max, 1);
+ dbgprintf("initrd_base: %lx, initrd_size: %lx\n", initrd_base, initrd_size);
+
+ cmdline_add_initrd(cmdline, initrd_base, initrd_size);
+ }
+
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ cmdline_add_elfcorehdr(cmdline, elfcorehdr_mem.start,
+ elfcorehdr_mem.end - elfcorehdr_mem.start + 1);
+
+ cmdline_add_mem(cmdline, crash_reserved_mem[usablemem_rgns.size - 1].start,
+ crash_reserved_mem[usablemem_rgns.size - 1].end -
+ crash_reserved_mem[usablemem_rgns.size - 1].start + 1);
+ }
+
+ cmdline[sizeof(cmdline) - 1] = 0;
+ add_buffer(info, cmdline, sizeof(cmdline), sizeof(cmdline),
+ sizeof(void *), _ALIGN_UP(hole_min, getpagesize()),
+ 0xffffffff, 1);
+
+ dbgprintf("%s:%d: command_line: %s\n", __func__, __LINE__, cmdline);
+
+ return 0;
+
+}
+
+int arch_compat_trampoline(struct kexec_info *UNUSED(info))
+{
+ return 0;
+}
+
+void arch_update_purgatory(struct kexec_info *UNUSED(info))
+{
+}
+
+unsigned long virt_to_phys(unsigned long addr)
+{
+ return addr & ((1ULL << 48) - 1);
+}
+
+/*
+ * add_segment() should convert base to a physical address on loongarch,
+ * while the default is just to work with base as is
+ */
+void add_segment(struct kexec_info *info, const void *buf, size_t bufsz,
+ unsigned long base, size_t memsz)
+{
+ add_segment_phys_virt(info, buf, bufsz, virt_to_phys(base), memsz, 1);
+}
+
+/*
+ * add_buffer() should convert base to a physical address on loongarch,
+ * while the default is just to work with base as is
+ */
+unsigned long add_buffer(struct kexec_info *info, const void *buf,
+ unsigned long bufsz, unsigned long memsz,
+ unsigned long buf_align, unsigned long buf_min,
+ unsigned long buf_max, int buf_end)
+{
+ return add_buffer_phys_virt(info, buf, bufsz, memsz, buf_align,
+ buf_min, buf_max, buf_end, 1);
+}
diff --git a/kexec/arch/loongarch/kexec-loongarch.h b/kexec/arch/loongarch/kexec-loongarch.h
new file mode 100644
index 0000000..5120a26
--- /dev/null
+++ b/kexec/arch/loongarch/kexec-loongarch.h
@@ -0,0 +1,60 @@
+#ifndef KEXEC_LOONGARCH_H
+#define KEXEC_LOONGARCH_H
+
+#include <sys/types.h>
+
+#include "image-header.h"
+
+#define BOOT_BLOCK_VERSION 17
+#define BOOT_BLOCK_LAST_COMP_VERSION 16
+
+#define MAX_MEMORY_RANGES 64
+#define MAX_LINE 160
+
+#define CORE_TYPE_ELF64 1
+
+#define COMMAND_LINE_SIZE 512
+
+#define KiB(x) ((x) * 1024UL)
+#define MiB(x) (KiB(x) * 1024UL)
+
+int elf_loongarch_probe(const char *kernel_buf, off_t kernel_size);
+int elf_loongarch_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void elf_loongarch_usage(void);
+
+int pei_loongarch_probe(const char *buf, off_t len);
+int pei_loongarch_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void pei_loongarch_usage(void);
+
+int loongarch_process_image_header(const struct loongarch_image_header *h);
+
+unsigned long loongarch_locate_kernel_segment(struct kexec_info *info);
+int loongarch_load_other_segments(struct kexec_info *info,
+ unsigned long hole_min);
+
+struct arch_options_t {
+ char *command_line;
+ char *initrd_file;
+ char *dtb;
+ int core_header_type;
+};
+
+/**
+ * struct loongarch_mem - Memory layout info.
+ */
+
+struct loongarch_mem {
+ uint64_t phys_offset;
+ uint64_t text_offset;
+ uint64_t image_size;
+};
+
+extern struct loongarch_mem loongarch_mem;
+
+extern struct memory_ranges usablemem_rgns;
+extern struct arch_options_t arch_options;
+extern off_t initrd_base, initrd_size;
+
+#endif /* KEXEC_LOONGARCH_H */
diff --git a/kexec/arch/loongarch/kexec-pei-loongarch.c b/kexec/arch/loongarch/kexec-pei-loongarch.c
new file mode 100644
index 0000000..1a11103
--- /dev/null
+++ b/kexec/arch/loongarch/kexec-pei-loongarch.c
@@ -0,0 +1,124 @@
+/*
+ * LoongArch kexec PE format binary image support.
+ *
+ * Copyright (C) 2022 Loongson Technology Corporation Limited.
+ * Youling Tang <tangyouling@loongson.cn>
+ *
+ * derived from kexec-image-arm64.c
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+#define _GNU_SOURCE
+
+#include <limits.h>
+#include <errno.h>
+#include <elf.h>
+
+#include "kexec.h"
+#include "kexec-elf.h"
+#include "image-header.h"
+#include "kexec-syscall.h"
+#include "crashdump-loongarch.h"
+#include "kexec-loongarch.h"
+#include "arch/options.h"
+
+int pei_loongarch_probe(const char *kernel_buf, off_t kernel_size)
+{
+ const struct loongarch_image_header *h;
+
+ if (kernel_size < sizeof(struct loongarch_image_header)) {
+ dbgprintf("%s: No loongarch image header.\n", __func__);
+ return -1;
+ }
+
+ h = (const struct loongarch_image_header *)(kernel_buf);
+
+ if (!loongarch_header_check_pe_sig(h)) {
+ dbgprintf("%s: Bad loongarch PE image header.\n", __func__);
+ return -1;
+ }
+
+ return 0;
+}
+
+int pei_loongarch_load(int argc, char **argv, const char *buf,
+ off_t len, struct kexec_info *info)
+{
+ int result;
+ unsigned long hole_min = 0;
+ unsigned long kernel_segment, kernel_entry;
+ const struct loongarch_image_header *header;
+
+ header = (const struct loongarch_image_header *)(buf);
+
+ if (loongarch_process_image_header(header))
+ return EFAILED;
+
+ kernel_segment = loongarch_locate_kernel_segment(info);
+
+ if (kernel_segment == ULONG_MAX) {
+ dbgprintf("%s: Kernel segment is not allocated\n", __func__);
+ result = EFAILED;
+ goto exit;
+ }
+
+ kernel_entry = virt_to_phys(loongarch_header_kernel_entry(header));
+
+ if (info->kexec_flags & KEXEC_ON_CRASH)
+ /*
+ * offset addresses in order to load vmlinux.efi into
+ * crash kernel's memory.
+ */
+ kernel_entry += crash_reserved_mem[usablemem_rgns.size - 1].start;
+
+ dbgprintf("%s: kernel_segment: %016lx\n", __func__, kernel_segment);
+ dbgprintf("%s: kernel_entry: %016lx\n", __func__, kernel_entry);
+ dbgprintf("%s: image_size: %016lx\n", __func__,
+ loongarch_mem.image_size);
+ dbgprintf("%s: text_offset: %016lx\n", __func__,
+ loongarch_mem.text_offset);
+ dbgprintf("%s: phys_offset: %016lx\n", __func__,
+ loongarch_mem.phys_offset);
+ dbgprintf("%s: PE format: %s\n", __func__,
+ (loongarch_header_check_pe_sig(header) ? "yes" : "no"));
+
+ /* Get kernel entry point */
+ info->entry = (void *)kernel_entry;
+
+ hole_min = kernel_segment + loongarch_mem.image_size;
+
+ /* Create and initialize elf core header segment */
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ result = load_crashdump_segments(info);
+ if (result) {
+ dbgprintf("%s: Creating eflcorehdr failed.\n",
+ __func__);
+ goto exit;
+ }
+ }
+
+ /* Load the kernel */
+ add_segment(info, buf, len, kernel_segment, loongarch_mem.image_size);
+
+ /* Prepare and load dtb and initrd data */
+ result = loongarch_load_other_segments(info, hole_min);
+ if (result) {
+ fprintf(stderr, "kexec: Load dtb and initrd segments failed.\n");
+ goto exit;
+ }
+
+exit:
+ if (result)
+ fprintf(stderr, "kexec: load failed.\n");
+
+ return result;
+}
+
+void pei_loongarch_usage(void)
+{
+ printf(
+" An LoongArch PE format binary image, uncompressed, little endian.\n"
+" Typically a vmlinux.efi file.\n\n");
+}
diff --git a/kexec/arch/m68k/Makefile b/kexec/arch/m68k/Makefile
new file mode 100644
index 0000000..eeaacbd
--- /dev/null
+++ b/kexec/arch/m68k/Makefile
@@ -0,0 +1,15 @@
+#
+# kexec m68k (linux booting linux)
+#
+m68k_KEXEC_SRCS = kexec/arch/m68k/kexec-m68k.c
+m68k_KEXEC_SRCS += kexec/arch/m68k/kexec-elf-m68k.c
+m68k_KEXEC_SRCS += kexec/arch/m68k/kexec-elf-rel-m68k.c
+m68k_KEXEC_SRCS += kexec/arch/m68k/bootinfo.c
+
+m68k_ADD_SEGMENT =
+m68k_VIRT_TO_PHYS =
+
+dist += kexec/arch/m68k/Makefile $(m68k_KEXEC_SRCS) \
+ kexec/arch/m68k/bootinfo.h \
+ kexec/arch/m68k/kexec-m68k.h \
+ kexec/arch/m68k/include/arch/options.h
diff --git a/kexec/arch/m68k/bootinfo.c b/kexec/arch/m68k/bootinfo.c
new file mode 100644
index 0000000..086a34b
--- /dev/null
+++ b/kexec/arch/m68k/bootinfo.c
@@ -0,0 +1,285 @@
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/random.h>
+
+#include "../../kexec.h"
+
+#include "bootinfo.h"
+
+const char *bootinfo_file = DEFAULT_BOOTINFO_FILE;
+static struct bi_rec *bootinfo;
+static off_t bootinfo_size;
+
+static unsigned int num_memchunks;
+
+static struct bi_rec *bi_next(struct bi_rec *bi, uint16_t size)
+{
+ return (void *)((unsigned long)bi + size);
+}
+
+static struct bi_rec *bi_find(struct bi_rec *prev, uint16_t tag)
+{
+ struct bi_rec *bi = prev ? bi_next(prev, prev->size) : bootinfo;
+
+ for (bi = prev ? bi_next(prev, prev->size) : bootinfo;
+ bi->tag != BI_LAST; bi = bi_next(bi, bi->size))
+ if (bi->tag == tag)
+ return bi;
+ return NULL;
+}
+
+static void bi_remove(uint16_t tag)
+{
+ struct bi_rec *bi;
+ off_t rem;
+ uint16_t size;
+
+ bi = bootinfo;
+ rem = bootinfo_size;
+ while (1) {
+ if (bi->tag == BI_LAST)
+ break;
+
+ size = bi->size;
+ if (bi->tag == tag) {
+ memmove(bi, bi_next(bi, size), rem - size);
+ bootinfo_size -= size;
+ rem -= size;
+ continue;
+ }
+
+ bi = bi_next(bi, size);
+ rem -= size;
+ }
+}
+
+static struct bi_rec *bi_add(uint16_t tag, uint16_t size)
+{
+ struct bi_rec *bi;
+
+ /* Add 4-byte header and round up to multiple of 4 bytes */
+ size = _ALIGN_UP(4 + size, 4);
+
+ bootinfo = xrealloc(bootinfo, bootinfo_size + size);
+
+ /* Replace old sentinel by new record */
+ bi = bi_next(bootinfo, bootinfo_size - 2);
+ bootinfo_size += size;
+ memset(bi, 0, size);
+ bi->tag = tag;
+ bi->size = size;
+
+ /* Re-add sentinel */
+ bi_next(bi, size)->tag = BI_LAST;
+
+ return bi;
+}
+
+void bootinfo_load(void)
+{
+ struct bi_rec *bi;
+ off_t rem;
+ uint16_t tag, size;
+
+ dbgprintf("Loading bootinfo from %s\n", bootinfo_file);
+ bootinfo = (void *)slurp_file_len(bootinfo_file, MAX_BOOTINFO_SIZE,
+ &bootinfo_size);
+ if (!bootinfo)
+ die("No bootinfo\n");
+
+ bi = bootinfo;
+ rem = bootinfo_size;
+ while (1) {
+ if (rem < 2)
+ die("Unexpected end of bootinfo\n");
+
+ tag = bi->tag;
+ if (tag == BI_LAST) {
+ rem -= 2;
+ break;
+ }
+
+ if (rem < 4)
+ die("Unexpected end of bootinfo\n");
+
+ size = bi->size;
+ if (size < 4 || size % 4)
+ die("Invalid tag size\n");
+ if (rem < size)
+ die("Unexpected end of bootinfo\n");
+
+ if (tag == BI_MEMCHUNK)
+ num_memchunks++;
+
+ bi = bi_next(bi, size);
+ rem -= size;
+ }
+
+ if (rem)
+ die("Trailing data at end of bootinfo\n");
+}
+
+void bootinfo_print(void)
+{
+ struct bi_rec *bi = bootinfo;
+ uint16_t tag, size;
+
+ while (1) {
+ tag = bi->tag;
+ if (tag == BI_LAST) {
+ puts("BI_LAST");
+ break;
+ }
+
+ size = bi->size;
+ switch (tag) {
+ case BI_MACHTYPE:
+ printf("BI_MACHTYPE: 0x%08x\n", bi->machtype);
+ break;
+
+ case BI_MEMCHUNK:
+ printf("BI_MEMCHUNK: 0x%08x bytes at 0x%08x\n",
+ bi->mem_info.size, bi->mem_info.addr);
+ break;
+
+ case BI_RAMDISK:
+ printf("BI_RAMDISK: 0x%08x bytes at 0x%08x\n",
+ bi->mem_info.size, bi->mem_info.addr);
+ break;
+
+ case BI_COMMAND_LINE:
+ printf("BI_COMMAND_LINE: %s\n", bi->string);
+ break;
+
+ case BI_RNG_SEED:
+ /* These are secret, so never print them to the console */
+ printf("BI_RNG_SEED: 0x%08x bytes\n", be16_to_cpu(bi->rng_seed.len));
+ break;
+
+ default:
+ printf("BI tag 0x%04x size %u\n", tag, size);
+ break;
+ }
+ bi = bi_next(bi, size);
+ }
+}
+
+int bootinfo_get_memory_ranges(struct memory_range **range)
+{
+ struct memory_range *ranges;
+ unsigned int i;
+ struct bi_rec *bi;
+
+ ranges = xmalloc(num_memchunks * sizeof(struct memory_range));
+ for (i = 0, bi = NULL;
+ i < num_memchunks && (bi = bi_find(bi, BI_MEMCHUNK)); i++) {
+ ranges[i].start = bi->mem_info.addr;
+ ranges[i].end = bi->mem_info.addr + bi->mem_info.size - 1;
+ ranges[i].type = RANGE_RAM;
+ }
+
+ *range = ranges;
+ return i;
+}
+
+void bootinfo_set_cmdline(const char *cmdline)
+{
+ struct bi_rec *bi;
+ uint16_t size;
+
+ /* Remove existing command line records */
+ bi_remove(BI_COMMAND_LINE);
+
+ if (!cmdline)
+ return;
+
+ /* Add new command line record */
+ size = strlen(cmdline) + 1;
+ bi = bi_add(BI_COMMAND_LINE, size);
+ memcpy(bi->string, cmdline, size);
+}
+
+void bootinfo_set_ramdisk(unsigned long ramdisk_addr,
+ unsigned long ramdisk_size)
+{
+ struct bi_rec *bi;
+
+ /* Remove existing ramdisk records */
+ bi_remove(BI_RAMDISK);
+
+ if (!ramdisk_size)
+ return;
+
+ /* Add new ramdisk record */
+ bi = bi_add(BI_RAMDISK, sizeof(bi->mem_info));
+ bi->mem_info.addr = ramdisk_addr;
+ bi->mem_info.size = ramdisk_size;
+}
+
+void bootinfo_add_rng_seed(void)
+{
+ enum { RNG_SEED_LEN = 32 };
+ struct bi_rec *bi;
+
+ /* Remove existing rng seed records */
+ bi_remove(BI_RNG_SEED);
+
+ /* Add new rng seed record */
+ bi = bi_add(BI_RNG_SEED, sizeof(bi->rng_seed) + RNG_SEED_LEN);
+ if (getrandom(bi->rng_seed.data, RNG_SEED_LEN, GRND_NONBLOCK) != RNG_SEED_LEN) {
+ bi_remove(BI_RNG_SEED);
+ return;
+ }
+ bi->rng_seed.len = cpu_to_be16(RNG_SEED_LEN);
+}
+
+
+ /*
+ * Check the bootinfo version in the kernel image
+ * All failures are non-fatal, as kexec may be used to load
+ * non-Linux images
+ */
+
+void bootinfo_check_bootversion(const struct kexec_info *info)
+{
+ struct bi_rec *bi;
+ const struct bootversion *bv;
+ uint16_t major, minor;
+ unsigned int i;
+
+ bv = info->segment[0].buf;
+ if (bv->magic != BOOTINFOV_MAGIC) {
+ printf("WARNING: No bootversion in kernel image\n");
+ return;
+ }
+
+ bi = bi_find(NULL, BI_MACHTYPE);
+ if (!bi) {
+ printf("WARNING: No machtype in bootinfo\n");
+ return;
+ }
+
+ for (i = 0; bv->machversions[i].machtype != bi->machtype; i++)
+ if (!bv->machversions[i].machtype) {
+ printf("WARNING: Machtype 0x%08x not in kernel bootversion\n",
+ bi->machtype);
+ return;
+ }
+
+ major = BI_VERSION_MAJOR(bv->machversions[i].version);
+ minor = BI_VERSION_MINOR(bv->machversions[i].version);
+ dbgprintf("Kernel uses bootversion %u.%u\n", major, minor);
+ if (major != SUPPORTED_BOOTINFO_VERSION)
+ printf("WARNING: Kernel bootversion %u.%u is too %s for this kexec (expected %u.x)\n",
+ major, minor,
+ major < SUPPORTED_BOOTINFO_VERSION ? "old" : "new",
+ SUPPORTED_BOOTINFO_VERSION);
+}
+
+void add_bootinfo(struct kexec_info *info, unsigned long addr)
+{
+ add_buffer(info, bootinfo, bootinfo_size, bootinfo_size,
+ sizeof(void *), addr, 0x0fffffff, 1);
+}
diff --git a/kexec/arch/m68k/bootinfo.h b/kexec/arch/m68k/bootinfo.h
new file mode 100644
index 0000000..bb8a03a
--- /dev/null
+++ b/kexec/arch/m68k/bootinfo.h
@@ -0,0 +1,53 @@
+#include <asm/bootinfo.h>
+
+#define DEFAULT_BOOTINFO_FILE "/proc/bootinfo"
+#define MAX_BOOTINFO_SIZE 1536
+
+/* New in 6.2's <asm/bootinfo.h>. Remove once 6.2 is baseline version. */
+#ifndef BI_RNG_SEED
+#define BI_RNG_SEED 0x0008
+#endif
+
+
+ /*
+ * Convenience overlay of several struct bi_record variants
+ */
+
+struct bi_rec {
+ __be16 tag;
+ __be16 size;
+ union {
+ __be32 data[0];
+ /* shorthands for the types we use */
+ __be32 machtype;
+ struct {
+ __be32 addr;
+ __be32 size;
+ } mem_info;
+ char string[0];
+ struct {
+ __be16 len;
+ __u8 data[0];
+ } rng_seed;
+ };
+};
+
+
+ /*
+ * We only support the "new" tagged bootinfo (v2)
+ */
+
+#define SUPPORTED_BOOTINFO_VERSION 2
+
+
+extern const char *bootinfo_file;
+
+extern void bootinfo_load(void);
+extern void bootinfo_print(void);
+extern int bootinfo_get_memory_ranges(struct memory_range **range);
+extern void bootinfo_set_cmdline(const char *cmdline);
+extern void bootinfo_set_ramdisk(unsigned long ramdisk_addr,
+ unsigned long ramdisk_size);
+extern void bootinfo_add_rng_seed(void);
+extern void bootinfo_check_bootversion(const struct kexec_info *info);
+extern void add_bootinfo(struct kexec_info *info, unsigned long addr);
diff --git a/kexec/arch/m68k/include/arch/options.h b/kexec/arch/m68k/include/arch/options.h
new file mode 100644
index 0000000..f279d54
--- /dev/null
+++ b/kexec/arch/m68k/include/arch/options.h
@@ -0,0 +1,45 @@
+#ifndef KEXEC_ARCH_M68K_OPTIONS_H
+#define KEXEC_ARCH_M68K_OPTIONS_H
+
+#define OPT_ARCH_MAX (OPT_MAX+0)
+
+/* All 'local' loader options: */
+#define OPT_APPEND (OPT_ARCH_MAX+0)
+#define OPT_REUSE_CMDLINE (OPT_ARCH_MAX+1)
+#define OPT_RAMDISK (OPT_ARCH_MAX+2)
+#define OPT_BOOTINFO (OPT_ARCH_MAX+3)
+
+/* Options relevant to the architecture (excluding loader-specific ones),
+ * in this case none:
+ */
+#define KEXEC_ARCH_OPTIONS \
+ KEXEC_OPTIONS \
+
+#define KEXEC_ARCH_OPT_STR KEXEC_OPT_STR ""
+
+/* The following two #defines list ALL of the options added by all of the
+ * architecture's loaders.
+ * o main() uses this complete list to scan for its options, ignoring
+ * arch-specific/loader-specific ones.
+ * o Then, arch_process_options() uses this complete list to scan for its
+ * options, ignoring general/loader-specific ones.
+ * o Then, the file_type[n].load re-scans for options, using
+ * KEXEC_ARCH_OPTIONS plus its loader-specific options subset.
+ * Any unrecognised options cause an error here.
+ *
+ * This is done so that main()'s/arch_process_options()'s getopt_long() calls
+ * don't choose a kernel filename from random arguments to options they don't
+ * recognise -- as they now recognise (if not act upon) all possible options.
+ */
+#define KEXEC_ALL_OPTIONS \
+ KEXEC_ARCH_OPTIONS \
+ { "command-line", 1, NULL, OPT_APPEND }, \
+ { "append", 1, NULL, OPT_APPEND }, \
+ { "reuse-cmdline", 0, NULL, OPT_REUSE_CMDLINE }, \
+ { "ramdisk", 1, NULL, OPT_RAMDISK }, \
+ { "initrd", 1, NULL, OPT_RAMDISK }, \
+ { "bootinfo", 1, NULL, OPT_BOOTINFO },
+
+#define KEXEC_ALL_OPT_STR KEXEC_ARCH_OPT_STR
+
+#endif /* KEXEC_ARCH_M68K_OPTIONS_H */
diff --git a/kexec/arch/m68k/kexec-elf-m68k.c b/kexec/arch/m68k/kexec-elf-m68k.c
new file mode 100644
index 0000000..a2bf7ee
--- /dev/null
+++ b/kexec/arch/m68k/kexec-elf-m68k.c
@@ -0,0 +1,183 @@
+/*
+ * kexec-elf-m68k.c - kexec Elf loader for m68k
+ *
+ * Copyright (C) 2013 Geert Uytterhoeven
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+*/
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <elf.h>
+#include <boot/elf_boot.h>
+#include <ip_checksum.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "kexec-m68k.h"
+#include "bootinfo.h"
+#include <arch/options.h>
+
+#define KiB * 1024
+#define MiB * 1024 KiB
+
+#define PAGE_SIZE 4 KiB
+
+
+int elf_m68k_probe(const char *buf, off_t len)
+{
+ struct mem_ehdr ehdr;
+ int result;
+ result = build_elf_exec_info(buf, len, &ehdr, 0);
+ if (result < 0)
+ goto out;
+
+ /* Verify the architecuture specific bits */
+ if (ehdr.e_machine != EM_68K) {
+ /* for a different architecture */
+ fprintf(stderr, "Not for this architecture.\n");
+ result = -1;
+ goto out;
+ }
+ result = 0;
+ out:
+ free_elf_info(&ehdr);
+ return result;
+}
+
+void elf_m68k_usage(void)
+{
+ printf(" --command-line=STRING Set the kernel command line to STRING\n"
+ " --append=STRING Set the kernel command line to STRING\n"
+ " --reuse-cmdline Use kernel command line from running system.\n"
+ " --ramdisk=FILE Use FILE as the kernel's initial ramdisk.\n"
+ " --initrd=FILE Use FILE as the kernel's initial ramdisk.\n"
+ " --bootinfo=FILE Use FILE as the kernel's bootinfo\n"
+ );
+}
+
+static unsigned long segment_end(const struct kexec_info *info, int i)
+{
+ return (unsigned long)info->segment[i].mem + info->segment[i].memsz - 1;
+}
+
+int elf_m68k_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ struct mem_ehdr ehdr;
+ const char *cmdline = NULL, *ramdisk_file = NULL;
+ int opt, result, i;
+ unsigned long bootinfo_addr, ramdisk_addr = 0;
+ off_t ramdisk_size = 0;
+
+ /* See options.h if adding any more options. */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { "command-line", 1, NULL, OPT_APPEND },
+ { "append", 1, NULL, OPT_APPEND },
+ { "reuse-cmdline", 0, NULL, OPT_REUSE_CMDLINE },
+ { "ramdisk", 1, NULL, OPT_RAMDISK },
+ { "initrd", 1, NULL, OPT_RAMDISK },
+ { "bootinfo", 1, NULL, OPT_BOOTINFO },
+ { 0, 0, NULL, 0 },
+ };
+
+ static const char short_options[] = KEXEC_ARCH_OPT_STR "d";
+
+ while ((opt = getopt_long(argc, argv, short_options, options, 0)) !=
+ -1) {
+ switch (opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX)
+ break;
+ case OPT_APPEND:
+ cmdline = optarg;
+ break;
+ case OPT_REUSE_CMDLINE:
+ cmdline = get_command_line();
+ break;
+ case OPT_RAMDISK:
+ ramdisk_file = optarg;
+ break;
+ case OPT_BOOTINFO:
+ break;
+ }
+ }
+
+ result = build_elf_exec_info(buf, len, &ehdr, 0);
+ if (result < 0)
+ die("ELF exec parse failed\n");
+
+ /* Fixup PT_LOAD segments that include the ELF header (offset zero) */
+ for (i = 0; i < ehdr.e_phnum; i++) {
+ struct mem_phdr *phdr;
+ phdr = &ehdr.e_phdr[i];
+ if (phdr->p_type != PT_LOAD || phdr->p_offset)
+ continue;
+
+ dbgprintf("Removing ELF header from segment %d\n", i);
+ phdr->p_paddr += PAGE_SIZE;
+ phdr->p_vaddr += PAGE_SIZE;
+ phdr->p_filesz -= PAGE_SIZE;
+ phdr->p_memsz -= PAGE_SIZE;
+ phdr->p_offset += PAGE_SIZE;
+ phdr->p_data += PAGE_SIZE;
+ }
+
+ /* Load the ELF data */
+ result = elf_exec_load(&ehdr, info);
+ if (result < 0)
+ die("ELF exec load failed\n");
+
+ info->entry = (void *)virt_to_phys(ehdr.e_entry);
+
+ /* Bootinfo must be stored right after the kernel */
+ bootinfo_addr = segment_end(info, info->nr_segments - 1) + 1;
+
+ /* Load ramdisk */
+ if (ramdisk_file) {
+ void *ramdisk = slurp_decompress_file(ramdisk_file,
+ &ramdisk_size);
+ /* Store ramdisk at top of first memory chunk */
+ ramdisk_addr = _ALIGN_DOWN(info->memory_range[0].end -
+ ramdisk_size + 1,
+ PAGE_SIZE);
+ if (!buf)
+ die("Ramdisk load failed\n");
+ add_buffer(info, ramdisk, ramdisk_size, ramdisk_size,
+ PAGE_SIZE, ramdisk_addr, info->memory_range[0].end,
+ 1);
+ }
+
+ /* Update and add bootinfo */
+ bootinfo_set_cmdline(cmdline);
+ bootinfo_set_ramdisk(ramdisk_addr, ramdisk_size);
+ bootinfo_add_rng_seed();
+ if (kexec_debug)
+ bootinfo_print();
+ add_bootinfo(info, bootinfo_addr);
+
+ /*
+ * Check if the kernel (and bootinfo) exceed 4 MiB, as current kernels
+ * don't support that.
+ * As the segments are still unsorted, the bootinfo is located in the
+ * last segment.
+ */
+ if (segment_end(info, info->nr_segments - 1) >= virt_to_phys(4 MiB - 1))
+ printf("WARNING: Kernel is larger than 4 MiB\n");
+
+ /* Check struct bootversion at start of kernel */
+ bootinfo_check_bootversion(info);
+
+ return 0;
+}
diff --git a/kexec/arch/m68k/kexec-elf-rel-m68k.c b/kexec/arch/m68k/kexec-elf-rel-m68k.c
new file mode 100644
index 0000000..0cc38cc
--- /dev/null
+++ b/kexec/arch/m68k/kexec-elf-rel-m68k.c
@@ -0,0 +1,39 @@
+/*
+ * kexec-elf-rel-m68k.c - kexec Elf relocation routines
+ *
+ * Copyright (C) 2013 Geert Uytterhoeven
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+*/
+
+#include <stdio.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+
+int machine_verify_elf_rel(struct mem_ehdr *ehdr)
+{
+ if (ehdr->ei_data != ELFDATA2MSB)
+ return 0;
+ if (ehdr->ei_class != ELFCLASS32)
+ return 0;
+ if (ehdr->e_machine != EM_68K)
+ return 0;
+ return 1;
+}
+
+void machine_apply_elf_rel(struct mem_ehdr *UNUSED(ehdr),
+ struct mem_sym *UNUSED(sym),
+ unsigned long r_type,
+ void *UNUSED(location),
+ unsigned long UNUSED(address),
+ unsigned long UNUSED(value))
+{
+ switch (r_type) {
+ default:
+ die("Unknown rela relocation: %lu\n", r_type);
+ break;
+ }
+ return;
+}
diff --git a/kexec/arch/m68k/kexec-m68k.c b/kexec/arch/m68k/kexec-m68k.c
new file mode 100644
index 0000000..cb54927
--- /dev/null
+++ b/kexec/arch/m68k/kexec-m68k.c
@@ -0,0 +1,110 @@
+/*
+ * kexec-m68k.c - kexec for m68k
+ *
+ * Copyright (C) 2013 Geert Uytterhoeven
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+#include <stddef.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <getopt.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "kexec-m68k.h"
+#include "bootinfo.h"
+#include <arch/options.h>
+
+
+static unsigned long m68k_memoffset;
+
+
+/* Return a sorted list of memory ranges. */
+int get_memory_ranges(struct memory_range **range, int *ranges,
+ unsigned long kexec_flags)
+{
+ bootinfo_load();
+ *ranges = bootinfo_get_memory_ranges(range);
+ m68k_memoffset = (*range)[0].start;
+ return 0;
+}
+
+
+struct file_type file_type[] = {
+ {"elf-m68k", elf_m68k_probe, elf_m68k_load, elf_m68k_usage},
+};
+int file_types = sizeof(file_type) / sizeof(file_type[0]);
+
+void arch_usage(void)
+{
+}
+
+int arch_process_options(int argc, char **argv)
+{
+ static const struct option options[] = {
+ KEXEC_ALL_OPTIONS
+ { "bootinfo", 1, NULL, OPT_BOOTINFO },
+ { 0, 0, NULL, 0 },
+ };
+ static const char short_options[] = KEXEC_ALL_OPT_STR;
+ int opt;
+
+ opterr = 0; /* Don't complain about unrecognized options here */
+ while ((opt = getopt_long(argc, argv, short_options, options, 0)) !=
+ -1) {
+ switch (opt) {
+ default:
+ break;
+ case OPT_BOOTINFO:
+ bootinfo_file = optarg;
+ break;
+ }
+ }
+ /* Reset getopt for the next pass; called in other source modules */
+ opterr = 1;
+ optind = 1;
+ return 0;
+}
+
+const struct arch_map_entry arches[] = {
+ { "m68k", KEXEC_ARCH_68K },
+ { NULL, 0 },
+};
+
+int arch_compat_trampoline(struct kexec_info *UNUSED(info))
+{
+ return 0;
+}
+
+void arch_update_purgatory(struct kexec_info *UNUSED(info))
+{
+}
+
+int is_crashkernel_mem_reserved(void)
+{
+ return 0;
+}
+
+int get_crash_kernel_load_range(uint64_t *start, uint64_t *end)
+{
+ /* Crash kernel region size is not exposed by the system */
+ return -1;
+}
+
+unsigned long virt_to_phys(unsigned long addr)
+{
+ return addr + m68k_memoffset;
+}
+
+/*
+ * add_segment() should convert base to a physical address on m68k,
+ * while the default is just to work with base as is */
+void add_segment(struct kexec_info *info, const void *buf, size_t bufsz,
+ unsigned long base, size_t memsz)
+{
+ add_segment_phys_virt(info, buf, bufsz, base, memsz, 1);
+}
diff --git a/kexec/arch/m68k/kexec-m68k.h b/kexec/arch/m68k/kexec-m68k.h
new file mode 100644
index 0000000..99482c4
--- /dev/null
+++ b/kexec/arch/m68k/kexec-m68k.h
@@ -0,0 +1,9 @@
+#ifndef KEXEC_M68K_H
+#define KEXEC_M68K_H
+
+int elf_m68k_probe(const char *buf, off_t len);
+int elf_m68k_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void elf_m68k_usage(void);
+
+#endif /* KEXEC_M68K_H */
diff --git a/kexec/arch/mips/Makefile b/kexec/arch/mips/Makefile
new file mode 100644
index 0000000..1fe7886
--- /dev/null
+++ b/kexec/arch/mips/Makefile
@@ -0,0 +1,29 @@
+#
+# kexec mips (linux booting linux)
+#
+mips_KEXEC_SRCS = kexec/arch/mips/kexec-mips.c
+mips_KEXEC_SRCS += kexec/arch/mips/kexec-elf-mips.c
+mips_KEXEC_SRCS += kexec/arch/mips/kexec-elf-rel-mips.c
+mips_KEXEC_SRCS += kexec/arch/mips/crashdump-mips.c
+
+mips_FS2DT = kexec/fs2dt.c
+mips_FS2DT_INCLUDE = \
+ -include $(srcdir)/kexec/arch/mips/crashdump-mips.h \
+ -include $(srcdir)/kexec/arch/mips/kexec-mips.h
+
+mips_DT_OPS += kexec/dt-ops.c
+
+include $(srcdir)/kexec/libfdt/Makefile.libfdt
+
+libfdt_SRCS += $(LIBFDT_SRCS:%=kexec/libfdt/%)
+mips_CPPFLAGS += -I$(srcdir)/kexec/libfdt
+mips_KEXEC_SRCS += $(libfdt_SRCS)
+
+mips_ADD_BUFFER =
+mips_ADD_SEGMENT =
+mips_VIRT_TO_PHYS =
+
+dist += kexec/arch/mips/Makefile $(mips_KEXEC_SRCS) \
+ kexec/arch/mips/kexec-mips.h \
+ kexec/arch/mips/crashdump-mips.h \
+ kexec/arch/mips/include/arch/options.h
diff --git a/kexec/arch/mips/crashdump-mips.c b/kexec/arch/mips/crashdump-mips.c
new file mode 100644
index 0000000..00f4335
--- /dev/null
+++ b/kexec/arch/mips/crashdump-mips.c
@@ -0,0 +1,408 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * 2005 (C) IBM Corporation.
+ * 2008 (C) MontaVista Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <inttypes.h>
+#include <elf.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "../../crashdump.h"
+#include "kexec-mips.h"
+#include "crashdump-mips.h"
+#include "unused.h"
+
+/* Stores a sorted list of RAM memory ranges for which to create elf headers.
+ * A separate program header is created for backup region */
+static struct memory_range crash_memory_range[CRASH_MAX_MEMORY_RANGES];
+
+/* Not used currently but required by generic fs2dt code */
+struct memory_ranges usablemem_rgns;
+
+/* Memory region reserved for storing panic kernel and other data. */
+static struct memory_range crash_reserved_mem;
+
+/* Read kernel physical load addr from the file returned by proc_iomem()
+ * (Kernel Code) and store in kexec_info */
+static int get_kernel_paddr(struct crash_elf_info *elf_info)
+{
+ uint64_t start;
+
+ if (xen_present()) /* Kernel not entity mapped under Xen */
+ return 0;
+
+ if (parse_iomem_single("Kernel code\n", &start, NULL) == 0) {
+ elf_info->kern_paddr_start = start;
+ dbgprintf("kernel load physical addr start = 0x%" PRIu64 "\n", start);
+ return 0;
+ }
+
+ fprintf(stderr, "Cannot determine kernel physical load addr\n");
+ return -1;
+}
+
+static int get_kernel_vaddr_and_size(struct crash_elf_info *elf_info,
+ unsigned long start_offset)
+{
+ uint64_t end;
+
+ if (!elf_info->kern_paddr_start)
+ return -1;
+
+ elf_info->kern_vaddr_start = elf_info->kern_paddr_start |
+ start_offset;
+ /* If "Kernel bss" exists, the kernel ends there, else fall
+ * through and say that it ends at "Kernel data" */
+ if (parse_iomem_single("Kernel bss\n", NULL, &end) == 0 ||
+ parse_iomem_single("Kernel data\n", NULL, &end) == 0) {
+ elf_info->kern_size = end - elf_info->kern_paddr_start;
+ dbgprintf("kernel_vaddr= 0x%llx paddr %llx\n",
+ elf_info->kern_vaddr_start,
+ elf_info->kern_paddr_start);
+ dbgprintf("kernel size = 0x%lx\n", elf_info->kern_size);
+ return 0;
+ }
+ fprintf(stderr, "Cannot determine kernel virtual load addr and size\n");
+ return -1;
+}
+
+/* Removes crash reserve region from list of memory chunks for whom elf program
+ * headers have to be created. Assuming crash reserve region to be a single
+ * continuous area fully contained inside one of the memory chunks */
+static int exclude_crash_reserve_region(int *nr_ranges)
+{
+ int i, j, tidx = -1;
+ unsigned long long cstart, cend;
+ struct memory_range temp_region = {
+ .start = 0,
+ .end = 0
+ };
+
+ /* Crash reserved region. */
+ cstart = crash_reserved_mem.start;
+ cend = crash_reserved_mem.end;
+
+ for (i = 0; i < (*nr_ranges); i++) {
+ unsigned long long mstart, mend;
+ mstart = crash_memory_range[i].start;
+ mend = crash_memory_range[i].end;
+ if (cstart < mend && cend > mstart) {
+ if (cstart != mstart && cend != mend) {
+ /* Split memory region */
+ crash_memory_range[i].end = cstart - 1;
+ temp_region.start = cend + 1;
+ temp_region.end = mend;
+ temp_region.type = RANGE_RAM;
+ tidx = i+1;
+ } else if (cstart != mstart)
+ crash_memory_range[i].end = cstart - 1;
+ else
+ crash_memory_range[i].start = cend + 1;
+ }
+ }
+ /* Insert split memory region, if any. */
+ if (tidx >= 0) {
+ if (*nr_ranges == CRASH_MAX_MEMORY_RANGES) {
+ /* No space to insert another element. */
+ fprintf(stderr, "Error: Number of crash memory ranges"
+ " excedeed the max limit\n");
+ return -1;
+ }
+ for (j = (*nr_ranges - 1); j >= tidx; j--)
+ crash_memory_range[j+1] = crash_memory_range[j];
+ crash_memory_range[tidx].start = temp_region.start;
+ crash_memory_range[tidx].end = temp_region.end;
+ crash_memory_range[tidx].type = temp_region.type;
+ (*nr_ranges)++;
+ }
+ return 0;
+}
+/* Reads the appropriate file and retrieves the SYSTEM RAM regions for whom to
+ * create Elf headers. Keeping it separate from get_memory_ranges() as
+ * requirements are different in the case of normal kexec and crashdumps.
+ *
+ * Normal kexec needs to look at all of available physical memory irrespective
+ * of the fact how much of it is being used by currently running kernel.
+ * Crashdumps need to have access to memory regions actually being used by
+ * running kernel. Expecting a different file/data structure than /proc/iomem
+ * to look into down the line. May be something like /proc/kernelmem or may
+ * be zone data structures exported from kernel.
+ */
+static int get_crash_memory_ranges(struct memory_range **range, int *ranges)
+{
+ const char iomem[] = "/proc/iomem";
+ int memory_ranges = 0;
+ char line[MAX_LINE];
+ FILE *fp;
+ unsigned long long start, end;
+
+ fp = fopen(iomem, "r");
+ if (!fp) {
+ fprintf(stderr, "Cannot open %s: %s\n",
+ iomem, strerror(errno));
+ return -1;
+ }
+ /* Separate segment for backup region */
+ crash_memory_range[0].start = BACKUP_SRC_START;
+ crash_memory_range[0].end = BACKUP_SRC_END;
+ crash_memory_range[0].type = RANGE_RAM;
+ memory_ranges++;
+
+ while (fgets(line, sizeof(line), fp) != 0) {
+ char *str;
+ int type, consumed, count;
+ if (memory_ranges >= CRASH_MAX_MEMORY_RANGES)
+ break;
+ count = sscanf(line, "%llx-%llx : %n",
+ &start, &end, &consumed);
+ if (count != 2)
+ continue;
+ str = line + consumed;
+
+ /* Only Dumping memory of type System RAM. */
+ if (memcmp(str, "System RAM\n", 11) == 0) {
+ type = RANGE_RAM;
+ } else if (memcmp(str, "Crash kernel\n", 13) == 0) {
+ /* Reserved memory region. New kernel can
+ * use this region to boot into. */
+ crash_reserved_mem.start = start;
+ crash_reserved_mem.end = end;
+ crash_reserved_mem.type = RANGE_RAM;
+ continue;
+ } else
+ continue;
+
+ if (start == BACKUP_SRC_START && end >= (BACKUP_SRC_END + 1))
+ start = BACKUP_SRC_END + 1;
+
+ crash_memory_range[memory_ranges].start = start;
+ crash_memory_range[memory_ranges].end = end;
+ crash_memory_range[memory_ranges].type = type;
+ memory_ranges++;
+
+ /* Segregate linearly mapped region. */
+ if (MAXMEM && (MAXMEM - 1) >= start && (MAXMEM - 1) <= end) {
+ crash_memory_range[memory_ranges - 1].end = MAXMEM - 1;
+
+ /* Add segregated region. */
+ crash_memory_range[memory_ranges].start = MAXMEM;
+ crash_memory_range[memory_ranges].end = end;
+ crash_memory_range[memory_ranges].type = type;
+ memory_ranges++;
+ }
+ }
+ fclose(fp);
+
+ if (exclude_crash_reserve_region(&memory_ranges) < 0)
+ return -1;
+
+ *range = crash_memory_range;
+ *ranges = memory_ranges;
+ return 0;
+}
+
+/* Adds the appropriate mem= options to command line, indicating the
+ * memory region the new kernel can use to boot into. */
+static int cmdline_add_mem(char *cmdline, unsigned long addr,
+ unsigned long size)
+{
+ int cmdlen, len;
+ char str[50], *ptr;
+
+ addr = addr/1024;
+ size = size/1024;
+ ptr = str;
+ strcpy(str, " mem=");
+ ptr += strlen(str);
+ ultoa(size, ptr);
+ strcat(str, "K@");
+ ptr = str + strlen(str);
+ ultoa(addr, ptr);
+ strcat(str, "K");
+ len = strlen(str);
+ cmdlen = strlen(cmdline) + len;
+ if (cmdlen > (COMMAND_LINE_SIZE - 1))
+ die("Command line overflow\n");
+ strcat(cmdline, str);
+
+ return 0;
+}
+
+/* Adds the elfcorehdr= command line parameter to command line. */
+static int cmdline_add_elfcorehdr(char *cmdline, unsigned long addr)
+{
+ int cmdlen, len, align = 1024;
+ char str[30], *ptr;
+
+ /* Passing in elfcorehdr=xxxK format. Saves space required in cmdline.
+ * Ensure 1K alignment*/
+ if (addr%align)
+ return -1;
+ addr = addr/align;
+ ptr = str;
+ strcpy(str, " elfcorehdr=");
+ ptr += strlen(str);
+ ultoa(addr, ptr);
+ strcat(str, "K");
+ len = strlen(str);
+ cmdlen = strlen(cmdline) + len;
+ if (cmdlen > (COMMAND_LINE_SIZE - 1))
+ die("Command line overflow\n");
+ strcat(cmdline, str);
+ return 0;
+}
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+# define ELFDATALOCAL ELFDATA2LSB
+#elif __BYTE_ORDER == __BIG_ENDIAN
+# define ELFDATALOCAL ELFDATA2MSB
+#else
+# error Unknown byte order
+#endif
+
+static struct crash_elf_info elf_info64 = {
+ class: ELFCLASS64,
+ data : ELFDATALOCAL,
+ machine : EM_MIPS,
+ page_offset : PAGE_OFFSET,
+ lowmem_limit : 0, /* 0 == no limit */
+};
+
+static struct crash_elf_info elf_info32 = {
+ class: ELFCLASS32,
+ data : ELFDATALOCAL,
+ machine : EM_MIPS,
+ page_offset : PAGE_OFFSET,
+ lowmem_limit : MAXMEM,
+};
+
+static int patch_elf_info(void)
+{
+ const char cpuinfo[] = "/proc/cpuinfo";
+ char line[MAX_LINE];
+ FILE *fp;
+
+ fp = fopen(cpuinfo, "r");
+ if (!fp) {
+ fprintf(stderr, "Cannot open %s: %s\n",
+ cpuinfo, strerror(errno));
+ return -1;
+ }
+ while (fgets(line, sizeof(line), fp) != 0) {
+ if (strncmp(line, "cpu model", 9) == 0) {
+ /* OCTEON uses a different page_offset. */
+ if (strstr(line, "Octeon"))
+ elf_info64.page_offset = OCTEON_PAGE_OFFSET;
+ /* LOONGSON uses a different page_offset. */
+ else if (strstr(line, "Loongson"))
+ elf_info64.page_offset = LOONGSON_PAGE_OFFSET;
+ break;
+ }
+ }
+ fclose(fp);
+ return 0;
+}
+
+/* Loads additional segments in case of a panic kernel is being loaded.
+ * One segment for backup region, another segment for storing elf headers
+ * for crash memory image.
+ */
+int load_crashdump_segments(struct kexec_info *info, char* mod_cmdline,
+ unsigned long UNUSED(max_addr),
+ unsigned long UNUSED(min_base))
+{
+ void *tmp;
+ unsigned long sz, elfcorehdr;
+ int nr_ranges, align = 1024;
+ struct memory_range *mem_range;
+ crash_create_elf_headers_func crash_create = crash_create_elf32_headers;
+ struct crash_elf_info *elf_info = &elf_info32;
+ unsigned long start_offset = 0x80000000UL;
+
+ if (patch_elf_info())
+ return -1;
+
+ if (arch_options.core_header_type == CORE_TYPE_ELF64) {
+ elf_info = &elf_info64;
+ crash_create = crash_create_elf64_headers;
+ start_offset = (unsigned long)0xffffffff80000000UL;
+ }
+
+ if (get_kernel_paddr(elf_info))
+ return -1;
+
+ if (get_kernel_vaddr_and_size(elf_info, start_offset))
+ return -1;
+
+ if (get_crash_memory_ranges(&mem_range, &nr_ranges) < 0)
+ return -1;
+
+ info->backup_src_start = BACKUP_SRC_START;
+ info->backup_src_size = BACKUP_SRC_SIZE;
+ /* Create a backup region segment to store backup data*/
+ sz = _ALIGN(BACKUP_SRC_SIZE, align);
+ tmp = xmalloc(sz);
+ memset(tmp, 0, sz);
+ info->backup_start = add_buffer(info, tmp, sz, sz, align,
+ crash_reserved_mem.start,
+ crash_reserved_mem.end, -1);
+
+ if (crash_create(info, elf_info, crash_memory_range, nr_ranges,
+ &tmp, &sz, ELF_CORE_HEADER_ALIGN) < 0) {
+ free(tmp);
+ return -1;
+ }
+
+ elfcorehdr = add_buffer(info, tmp, sz, sz, align,
+ crash_reserved_mem.start,
+ crash_reserved_mem.end, -1);
+
+ /*
+ * backup segment is after elfcorehdr, so use elfcorehdr as top of
+ * kernel's available memory
+ */
+ cmdline_add_mem(mod_cmdline, crash_reserved_mem.start,
+ crash_reserved_mem.end - crash_reserved_mem.start + 1);
+ cmdline_add_elfcorehdr(mod_cmdline, elfcorehdr);
+
+ dbgprintf("CRASH MEMORY RANGES:\n");
+ dbgprintf("%016Lx-%016Lx\n", crash_reserved_mem.start,
+ crash_reserved_mem.end);
+ return 0;
+}
+
+int is_crashkernel_mem_reserved(void)
+{
+ uint64_t start, end;
+
+ return parse_iomem_single("Crash kernel\n", &start, &end) == 0 ?
+ (start != end) : 0;
+}
+
+int get_crash_kernel_load_range(uint64_t *start, uint64_t *end)
+{
+ return parse_iomem_single("Crash kernel\n", start, end);
+}
diff --git a/kexec/arch/mips/crashdump-mips.h b/kexec/arch/mips/crashdump-mips.h
new file mode 100644
index 0000000..55c9925
--- /dev/null
+++ b/kexec/arch/mips/crashdump-mips.h
@@ -0,0 +1,30 @@
+#ifndef CRASHDUMP_MIPS_H
+#define CRASHDUMP_MIPS_H
+
+struct kexec_info;
+int load_crashdump_segments(struct kexec_info *info, char *mod_cmdline,
+ unsigned long max_addr, unsigned long min_base);
+#ifdef __mips64
+#define PAGE_OFFSET 0xa800000000000000ULL
+#define MAXMEM 0
+#else
+#define PAGE_OFFSET 0x80000000
+#define MAXMEM 0x80000000
+#endif
+#define __pa(x) ((unsigned long)(X) & 0x7fffffff)
+
+#define LOONGSON_PAGE_OFFSET 0xffffffff80000000ULL
+#define OCTEON_PAGE_OFFSET 0x8000000000000000ULL
+
+#define CRASH_MAX_MEMMAP_NR (KEXEC_MAX_SEGMENTS + 1)
+#define CRASH_MAX_MEMORY_RANGES (MAX_MEMORY_RANGES + 2)
+
+#define COMMAND_LINE_SIZE 512
+
+/* Backup Region, First 1M of System RAM. */
+#define BACKUP_SRC_START 0x00000000
+#define BACKUP_SRC_END 0x000fffff
+#define BACKUP_SRC_SIZE (BACKUP_SRC_END - BACKUP_SRC_START + 1)
+
+extern struct arch_options_t arch_options;
+#endif /* CRASHDUMP_MIPS_H */
diff --git a/kexec/arch/mips/include/arch/options.h b/kexec/arch/mips/include/arch/options.h
new file mode 100644
index 0000000..ba2f346
--- /dev/null
+++ b/kexec/arch/mips/include/arch/options.h
@@ -0,0 +1,43 @@
+#ifndef KEXEC_ARCH_MIPS_OPTIONS_H
+#define KEXEC_ARCH_MIPS_OPTIONS_H
+
+#define OPT_ARCH_MAX (OPT_MAX+0)
+#define OPT_APPEND (OPT_ARCH_MAX+0)
+#define OPT_DTB (OPT_ARCH_MAX+1)
+#define OPT_RAMDISK (OPT_ARCH_MAX+2)
+#define OPT_REUSE_CMDLINE (OPT_ARCH_MAX+3)
+
+/* Options relevant to the architecture (excluding loader-specific ones),
+ * in this case none:
+ */
+#define KEXEC_ARCH_OPTIONS \
+ KEXEC_OPTIONS \
+ {"command-line", 1, 0, OPT_APPEND}, \
+ {"append", 1, 0, OPT_APPEND}, \
+ {"dtb", 1, 0, OPT_DTB }, \
+ {"initrd", 1, 0, OPT_RAMDISK }, \
+ { "reuse-cmdline", 0, NULL, OPT_REUSE_CMDLINE },
+
+
+#define KEXEC_ARCH_OPT_STR KEXEC_OPT_STR ""
+
+/* The following two #defines list ALL of the options added by all of the
+ * architecture's loaders.
+ * o main() uses this complete list to scan for its options, ignoring
+ * arch-specific/loader-specific ones.
+ * o Then, arch_process_options() uses this complete list to scan for its
+ * options, ignoring general/loader-specific ones.
+ * o Then, the file_type[n].load re-scans for options, using
+ * KEXEC_ARCH_OPTIONS plus its loader-specific options subset.
+ * Any unrecognised options cause an error here.
+ *
+ * This is done so that main()'s/arch_process_options()'s getopt_long() calls
+ * don't choose a kernel filename from random arguments to options they don't
+ * recognise -- as they now recognise (if not act upon) all possible options.
+ */
+#define KEXEC_ALL_OPTIONS \
+ KEXEC_ARCH_OPTIONS
+
+#define KEXEC_ALL_OPT_STR KEXEC_ARCH_OPT_STR
+
+#endif /* KEXEC_ARCH_MIPS_OPTIONS_H */
diff --git a/kexec/arch/mips/kexec-elf-mips.c b/kexec/arch/mips/kexec-elf-mips.c
new file mode 100644
index 0000000..230d806
--- /dev/null
+++ b/kexec/arch/mips/kexec-elf-mips.c
@@ -0,0 +1,242 @@
+/*
+ * kexec-elf-mips.c - kexec Elf loader for mips
+ * Copyright (C) 2007 Francesco Chiechi, Alessandro Rubini
+ * Copyright (C) 2007 Tvblob s.r.l.
+ *
+ * derived from ../ppc/kexec-elf-ppc.c
+ * Copyright (C) 2004 Albert Herranz
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+*/
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <elf.h>
+#include <boot/elf_boot.h>
+#include <ip_checksum.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "kexec-mips.h"
+#include "crashdump-mips.h"
+#include <arch/options.h>
+#include "../../fs2dt.h"
+#include "../../dt-ops.h"
+
+static const int probe_debug = 0;
+
+#define BOOTLOADER "kexec"
+#define UPSZ(X) _ALIGN_UP(sizeof(X), 4)
+
+#define CMDLINE_PREFIX "kexec "
+static char cmdline_buf[COMMAND_LINE_SIZE] = CMDLINE_PREFIX;
+
+/* Adds initrd parameters to command line. */
+static int cmdline_add_initrd(char *cmdline, unsigned long addr, char *new_para)
+{
+ int cmdlen, len;
+ char str[30], *ptr;
+
+ ptr = str;
+ strcpy(str, new_para);
+ ptr += strlen(str);
+ ultoa(addr, ptr);
+ len = strlen(str);
+ cmdlen = strlen(cmdline) + len;
+ if (cmdlen > (COMMAND_LINE_SIZE - 1))
+ die("Command line overflow\n");
+ strcat(cmdline, str);
+
+ return 0;
+}
+
+/* add initrd to cmdline to compatible with previous platforms. */
+static int patch_initrd_info(char *cmdline, unsigned long base,
+ unsigned long size)
+{
+ const char cpuinfo[] = "/proc/cpuinfo";
+ char line[MAX_LINE];
+ FILE *fp;
+ unsigned long page_offset = PAGE_OFFSET;
+
+ fp = fopen(cpuinfo, "r");
+ if (!fp) {
+ fprintf(stderr, "Cannot open %s: %s\n",
+ cpuinfo, strerror(errno));
+ return -1;
+ }
+ while (fgets(line, sizeof(line), fp) != 0) {
+ if (strncmp(line, "cpu model", 9) == 0) {
+ if (strstr(line, "Loongson")) {
+ /* LOONGSON64 uses a different page_offset. */
+ if (arch_options.core_header_type ==
+ CORE_TYPE_ELF64)
+ page_offset = LOONGSON_PAGE_OFFSET;
+ cmdline_add_initrd(cmdline,
+ page_offset + base, " rd_start=");
+ cmdline_add_initrd(cmdline, size, " rd_size=");
+ break;
+ }
+ }
+ }
+ fclose(fp);
+ return 0;
+}
+
+int elf_mips_probe(const char *buf, off_t len)
+{
+ struct mem_ehdr ehdr;
+ int result;
+ result = build_elf_exec_info(buf, len, &ehdr, 0);
+ if (result < 0) {
+ goto out;
+ }
+
+ /* Verify the architecuture specific bits */
+ if (ehdr.e_machine != EM_MIPS) {
+ /* for a different architecture */
+ if (probe_debug) {
+ fprintf(stderr, "Not for this architecture.\n");
+ }
+ result = -1;
+ goto out;
+ }
+ result = 0;
+ out:
+ free_elf_info(&ehdr);
+ return result;
+}
+
+void elf_mips_usage(void)
+{
+}
+
+int elf_mips_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ struct mem_ehdr ehdr;
+ int command_line_len = 0;
+ char *crash_cmdline;
+ int result;
+ unsigned long cmdline_addr;
+ size_t i;
+ off_t dtb_length;
+ char *dtb_buf;
+ char *initrd_buf = NULL;
+ unsigned long long kernel_addr = 0, kernel_size = 0;
+ unsigned long pagesize = getpagesize();
+
+ /* Need to append some command line parameters internally in case of
+ * taking crash dumps.
+ */
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ crash_cmdline = xmalloc(COMMAND_LINE_SIZE);
+ memset((void *)crash_cmdline, 0, COMMAND_LINE_SIZE);
+ } else
+ crash_cmdline = NULL;
+
+ result = build_elf_exec_info(buf, len, &ehdr, 0);
+ if (result < 0)
+ die("ELF exec parse failed\n");
+
+ /* Read in the PT_LOAD segments and remove CKSEG0 mask from address*/
+ for (i = 0; i < ehdr.e_phnum; i++) {
+ struct mem_phdr *phdr;
+ phdr = &ehdr.e_phdr[i];
+ if (phdr->p_type == PT_LOAD) {
+ phdr->p_paddr = virt_to_phys(phdr->p_paddr);
+ kernel_addr = phdr->p_paddr;
+ kernel_size = phdr->p_memsz;
+ }
+ }
+
+ /* Load the Elf data */
+ result = elf_exec_load(&ehdr, info);
+ if (result < 0)
+ die("ELF exec load failed\n");
+
+ info->entry = (void *)virt_to_phys(ehdr.e_entry);
+
+ if (arch_options.command_line)
+ command_line_len = strlen(arch_options.command_line) + 1;
+
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ result = load_crashdump_segments(info, crash_cmdline,
+ 0, 0);
+ if (result < 0) {
+ free(crash_cmdline);
+ return -1;
+ }
+ }
+
+ if (arch_options.command_line)
+ strncat(cmdline_buf, arch_options.command_line, command_line_len);
+ if (crash_cmdline)
+ {
+ strncat(cmdline_buf, crash_cmdline,
+ sizeof(crash_cmdline) -
+ strlen(crash_cmdline) - 1);
+ free(crash_cmdline);
+ }
+
+ if (info->kexec_flags & KEXEC_ON_CRASH)
+ /* In case of crashdump segment[0] is kernel.
+ * Put cmdline just after it. */
+ cmdline_addr = (unsigned long)info->segment[0].mem +
+ info->segment[0].memsz;
+ else
+ cmdline_addr = 0;
+
+ /* MIPS systems that have been converted to use device tree
+ * passed through UHI will use commandline in the DTB and
+ * the DTB passed as a separate buffer. Note that
+ * CMDLINE_PREFIX is skipped here intentionally, as it is
+ * used only in the legacy method */
+
+ if (arch_options.dtb_file) {
+ dtb_buf = slurp_file(arch_options.dtb_file, &dtb_length);
+ } else {
+ create_flatten_tree(&dtb_buf, &dtb_length, cmdline_buf + strlen(CMDLINE_PREFIX));
+ }
+
+ if (arch_options.initrd_file) {
+ initrd_buf = slurp_file(arch_options.initrd_file, &initrd_size);
+
+ /* Create initrd entries in dtb - although at this time
+ * they would not point to the correct location */
+ dtb_set_initrd(&dtb_buf, &dtb_length, (off_t)initrd_buf, (off_t)initrd_buf + initrd_size);
+
+ initrd_base = add_buffer(info, initrd_buf, initrd_size,
+ initrd_size, sizeof(void *),
+ _ALIGN_UP(kernel_addr + kernel_size + dtb_length,
+ pagesize), 0x0fffffff, 1);
+
+ /* Now that the buffer for initrd is prepared, update the dtb
+ * with an appropriate location */
+ dtb_set_initrd(&dtb_buf, &dtb_length, initrd_base, initrd_base + initrd_size);
+
+ /* Add the initrd parameters to cmdline */
+ patch_initrd_info(cmdline_buf, initrd_base, initrd_size);
+ }
+ /* This is a legacy method for commandline passing used
+ * currently by Octeon CPUs only */
+ add_buffer(info, cmdline_buf, sizeof(cmdline_buf),
+ sizeof(cmdline_buf), sizeof(void *),
+ cmdline_addr, 0x0fffffff, 1);
+
+ add_buffer(info, dtb_buf, dtb_length, dtb_length, 0,
+ _ALIGN_UP(kernel_addr + kernel_size, pagesize),
+ 0x0fffffff, 1);
+
+ return 0;
+}
+
diff --git a/kexec/arch/mips/kexec-elf-rel-mips.c b/kexec/arch/mips/kexec-elf-rel-mips.c
new file mode 100644
index 0000000..5bc22d5
--- /dev/null
+++ b/kexec/arch/mips/kexec-elf-rel-mips.c
@@ -0,0 +1,46 @@
+/*
+ * kexec-elf-rel-mips.c - kexec Elf relocation routines
+ * Copyright (C) 2007 Francesco Chiechi, Alessandro Rubini
+ * Copyright (C) 2007 Tvblob s.r.l.
+ *
+ * derived from ../ppc/kexec-elf-rel-ppc.c
+ * Copyright (C) 2004 Albert Herranz
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+*/
+
+#include <stdio.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+
+int machine_verify_elf_rel(struct mem_ehdr *ehdr)
+{
+ if (ehdr->ei_data != ELFDATA2MSB) {
+ return 0;
+ }
+ if (ehdr->ei_class != ELFCLASS32) {
+ return 0;
+ }
+ if (ehdr->e_machine != EM_MIPS) {
+ return 0;
+ }
+ return 1;
+}
+
+void machine_apply_elf_rel(struct mem_ehdr *UNUSED(ehdr),
+ struct mem_sym *UNUSED(sym),
+ unsigned long r_type,
+ void *UNUSED(location),
+ unsigned long UNUSED(address),
+ unsigned long UNUSED(value))
+{
+ switch(r_type) {
+
+ default:
+ die("Unknown rela relocation: %lu\n", r_type);
+ break;
+ }
+ return;
+}
diff --git a/kexec/arch/mips/kexec-mips.c b/kexec/arch/mips/kexec-mips.c
new file mode 100644
index 0000000..d8cbea8
--- /dev/null
+++ b/kexec/arch/mips/kexec-mips.c
@@ -0,0 +1,191 @@
+/*
+ * kexec-mips.c - kexec for mips
+ * Copyright (C) 2007 Francesco Chiechi, Alessandro Rubini
+ * Copyright (C) 2007 Tvblob s.r.l.
+ *
+ * derived from ../ppc/kexec-ppc.c
+ * Copyright (C) 2004, 2005 Albert Herranz
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+#include <stddef.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <getopt.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "kexec-mips.h"
+#include <arch/options.h>
+
+/* Currently not used but required by top-level fs2dt code */
+off_t initrd_base = 0;
+off_t initrd_size = 0;
+
+static struct memory_range memory_range[MAX_MEMORY_RANGES];
+
+/* Return a sorted list of memory ranges. */
+int get_memory_ranges(struct memory_range **range, int *ranges,
+ unsigned long UNUSED(kexec_flags))
+{
+ int memory_ranges = 0;
+
+ const char iomem[] = "/proc/iomem";
+ char line[MAX_LINE];
+ FILE *fp;
+ unsigned long long start, end;
+ char *str;
+ int type, consumed, count;
+
+ fp = fopen(iomem, "r");
+ if (!fp) {
+ fprintf(stderr, "Cannot open %s: %s\n", iomem, strerror(errno));
+ return -1;
+ }
+ while (fgets(line, sizeof(line), fp) != 0) {
+ if (memory_ranges >= MAX_MEMORY_RANGES)
+ break;
+ count = sscanf(line, "%llx-%llx : %n", &start, &end, &consumed);
+ if (count != 2)
+ continue;
+ str = line + consumed;
+ end = end + 1;
+ if (memcmp(str, "System RAM\n", 11) == 0) {
+ type = RANGE_RAM;
+ } else if (memcmp(str, "reserved\n", 9) == 0) {
+ type = RANGE_RESERVED;
+ } else {
+ continue;
+ }
+ if (memory_ranges > 0 &&
+ memory_range[memory_ranges - 1].end == start &&
+ memory_range[memory_ranges - 1].type == type) {
+ memory_range[memory_ranges - 1].end = end;
+ } else {
+ memory_range[memory_ranges].start = start;
+ memory_range[memory_ranges].end = end;
+ memory_range[memory_ranges].type = type;
+ memory_ranges++;
+ }
+ }
+ fclose(fp);
+ *range = memory_range;
+ *ranges = memory_ranges;
+ return 0;
+}
+
+struct file_type file_type[] = {
+ {"elf-mips", elf_mips_probe, elf_mips_load, elf_mips_usage},
+};
+int file_types = sizeof(file_type) / sizeof(file_type[0]);
+
+void arch_usage(void)
+{
+ printf(
+ " --command-line=STRING Set the kernel command line to STRING.\n"
+ " --append=STRING Set the kernel command line to STRING.\n"
+ " --dtb=FILE Use FILE as the device tree blob.\n"
+ " --initrd=FILE Use FILE as initial ramdisk.\n"
+ " --reuse-cmdline Use kernel command line from running system.\n"
+ );
+}
+
+struct arch_options_t arch_options = {
+#ifdef __mips64
+ .core_header_type = CORE_TYPE_ELF64,
+#else
+ .core_header_type = CORE_TYPE_ELF32,
+#endif
+};
+
+int arch_process_options(int argc, char **argv)
+{
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { 0 },
+ };
+ static const char short_options[] = KEXEC_ARCH_OPT_STR;
+ int opt;
+ char *cmdline = NULL;
+ const char *append = NULL;
+
+ while ((opt = getopt_long(argc, argv, short_options,
+ options, 0)) != -1) {
+ switch (opt) {
+ case OPT_APPEND:
+ append = optarg;
+ break;
+ case OPT_REUSE_CMDLINE:
+ cmdline = get_command_line();
+ break;
+ case OPT_DTB:
+ arch_options.dtb_file = optarg;
+ break;
+ case OPT_RAMDISK:
+ arch_options.initrd_file = optarg;
+ break;
+ default:
+ break;
+ }
+ }
+
+ arch_options.command_line = concat_cmdline(cmdline, append);
+
+ dbgprintf("%s:%d: command_line: %s\n", __func__, __LINE__,
+ arch_options.command_line);
+ dbgprintf("%s:%d: initrd: %s\n", __func__, __LINE__,
+ arch_options.initrd_file);
+ dbgprintf("%s:%d: dtb: %s\n", __func__, __LINE__,
+ arch_options.dtb_file);
+
+ return 0;
+}
+
+const struct arch_map_entry arches[] = {
+ /* For compatibility with older patches
+ * use KEXEC_ARCH_DEFAULT instead of KEXEC_ARCH_MIPS here.
+ */
+ { "mips", KEXEC_ARCH_MIPS },
+ { "mips64", KEXEC_ARCH_MIPS },
+ { NULL, 0 },
+};
+
+int arch_compat_trampoline(struct kexec_info *UNUSED(info))
+{
+
+ return 0;
+}
+
+void arch_update_purgatory(struct kexec_info *UNUSED(info))
+{
+}
+
+unsigned long virt_to_phys(unsigned long addr)
+{
+ return addr & 0x7fffffff;
+}
+
+/*
+ * add_segment() should convert base to a physical address on mips,
+ * while the default is just to work with base as is */
+void add_segment(struct kexec_info *info, const void *buf, size_t bufsz,
+ unsigned long base, size_t memsz)
+{
+ add_segment_phys_virt(info, buf, bufsz, virt_to_phys(base), memsz, 1);
+}
+
+/*
+ * add_buffer() should convert base to a physical address on mips,
+ * while the default is just to work with base as is */
+unsigned long add_buffer(struct kexec_info *info, const void *buf,
+ unsigned long bufsz, unsigned long memsz,
+ unsigned long buf_align, unsigned long buf_min,
+ unsigned long buf_max, int buf_end)
+{
+ return add_buffer_phys_virt(info, buf, bufsz, memsz, buf_align,
+ buf_min, buf_max, buf_end, 1);
+}
+
diff --git a/kexec/arch/mips/kexec-mips.h b/kexec/arch/mips/kexec-mips.h
new file mode 100644
index 0000000..222c815
--- /dev/null
+++ b/kexec/arch/mips/kexec-mips.h
@@ -0,0 +1,30 @@
+#ifndef KEXEC_MIPS_H
+#define KEXEC_MIPS_H
+
+#include <sys/types.h>
+
+#define BOOT_BLOCK_VERSION 17
+#define BOOT_BLOCK_LAST_COMP_VERSION 16
+
+#define MAX_MEMORY_RANGES 64
+#define MAX_LINE 160
+
+#define CORE_TYPE_ELF32 1
+#define CORE_TYPE_ELF64 2
+
+int elf_mips_probe(const char *buf, off_t len);
+int elf_mips_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void elf_mips_usage(void);
+
+struct arch_options_t {
+ char *command_line;
+ char *dtb_file;
+ char *initrd_file;
+ int core_header_type;
+};
+
+extern struct memory_ranges usablemem_rgns;
+extern off_t initrd_base, initrd_size;
+
+#endif /* KEXEC_MIPS_H */
diff --git a/kexec/arch/ppc/Makefile b/kexec/arch/ppc/Makefile
new file mode 100644
index 0000000..71871f1
--- /dev/null
+++ b/kexec/arch/ppc/Makefile
@@ -0,0 +1,34 @@
+#
+# kexec ppc (linux booting linux)
+#
+include $(srcdir)/kexec/libfdt/Makefile.libfdt
+
+ppc_KEXEC_SRCS = kexec/arch/ppc/kexec-ppc.c
+ppc_KEXEC_SRCS += kexec/arch/ppc/kexec-elf-ppc.c
+ppc_KEXEC_SRCS += kexec/arch/ppc/kexec-elf-rel-ppc.c
+ppc_KEXEC_SRCS += kexec/arch/ppc/kexec-dol-ppc.c
+ppc_KEXEC_SRCS += kexec/arch/ppc/kexec-uImage-ppc.c
+ppc_KEXEC_SRCS += kexec/arch/ppc/ppc-setup-simple.S
+ppc_KEXEC_SRCS += kexec/arch/ppc/ppc-setup-dol.S
+ppc_KEXEC_SRCS += kexec/arch/ppc/fixup_dtb.c
+ppc_KEXEC_SRCS += kexec/arch/ppc/fs2dt.c
+ppc_KEXEC_SRCS += kexec/arch/ppc/crashdump-powerpc.c
+
+ppc_UIMAGE = kexec/kexec-uImage.c
+
+ppc_libfdt_SRCS = kexec/arch/ppc/libfdt-wrapper.c
+libfdt_SRCS += $(LIBFDT_SRCS:%=kexec/libfdt/%)
+ppc_ARCH_REUSE_INITRD =
+
+ppc_CPPFLAGS = -I$(srcdir)/kexec/libfdt
+
+ppc_KEXEC_SRCS += $(libfdt_SRCS) $(ppc_libfdt_SRCS)
+
+ppc_ASFLAGS = -Wa,--noexecstack
+
+dist += kexec/arch/ppc/Makefile $(ppc_KEXEC_SRCS) \
+ kexec/arch/ppc/crashdump-powerpc.h kexec/arch/ppc/fixup_dtb.h \
+ kexec/arch/ppc/kexec-ppc.h kexec/arch/ppc/ops.h \
+ kexec/arch/ppc/ppc_asm.h \
+ kexec/arch/ppc/include/page.h kexec/arch/ppc/include/types.h \
+ kexec/arch/ppc/include/arch/options.h
diff --git a/kexec/arch/ppc/crashdump-powerpc.c b/kexec/arch/ppc/crashdump-powerpc.c
new file mode 100644
index 0000000..15e8531
--- /dev/null
+++ b/kexec/arch/ppc/crashdump-powerpc.c
@@ -0,0 +1,433 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <limits.h>
+#include <elf.h>
+#include <dirent.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "../../crashdump.h"
+#include "kexec-ppc.h"
+#include "crashdump-powerpc.h"
+
+#define DEVTREE_CRASHKERNEL_BASE "/proc/device-tree/chosen/linux,crashkernel-base"
+#define DEVTREE_CRASHKERNEL_SIZE "/proc/device-tree/chosen/linux,crashkernel-size"
+
+#ifdef CONFIG_PPC64
+static struct crash_elf_info elf_info64 = {
+class: ELFCLASS64,
+data: ELFDATA2MSB,
+machine: EM_PPC64,
+page_offset: PAGE_OFFSET,
+lowmem_limit: MAXMEM,
+};
+#endif
+static struct crash_elf_info elf_info32 = {
+class: ELFCLASS32,
+data: ELFDATA2MSB,
+#ifdef CONFIG_PPC64
+machine: EM_PPC64,
+#else
+machine: EM_PPC,
+#endif
+page_offset: PAGE_OFFSET,
+lowmem_limit: MAXMEM,
+};
+
+/* Stores a sorted list of RAM memory ranges for which to create elf headers.
+ * A separate program header is created for backup region
+ */
+static struct memory_range *crash_memory_range;
+static int crash_nr_memory_ranges;
+
+/* Define a variable to replace the CRASH_MAX_MEMORY_RANGES macro */
+static int crash_max_memory_ranges;
+
+/*
+ * Used to save various memory ranges/regions needed for the captured
+ * kernel to boot. (lime memmap= option in other archs)
+ */
+mem_rgns_t usablemem_rgns = {0, NULL};
+
+/* Append a segment to crash_memory_range, splitting it into two if
+ * it contains both lowmem and highmem */
+static void add_crash_memory_range(unsigned long long start,
+ unsigned long long end)
+{
+#ifndef CONFIG_PPC64
+ if (start < elf_info32.lowmem_limit && end > elf_info32.lowmem_limit) {
+ add_crash_memory_range(start, elf_info32.lowmem_limit);
+ add_crash_memory_range(elf_info32.lowmem_limit, end);
+ return;
+ }
+#endif
+
+ if (crash_nr_memory_ranges < crash_max_memory_ranges) {
+ crash_memory_range[crash_nr_memory_ranges].start = start;
+ crash_memory_range[crash_nr_memory_ranges].end = end;
+ crash_memory_range[crash_nr_memory_ranges].type = RANGE_RAM;
+ }
+
+ crash_nr_memory_ranges++;
+}
+
+
+/* Reads the appropriate file and retrieves the SYSTEM RAM regions for whom to
+ * create Elf headers. Keeping it separate from get_memory_ranges() as
+ * requirements are different in the case of normal kexec and crashdumps.
+ *
+ * Normal kexec needs to look at all of available physical memory irrespective
+ * of the fact how much of it is being used by currently running kernel.
+ * Crashdumps need to have access to memory regions actually being used by
+ * running kernel. Expecting a different file/data structure than /proc/iomem
+ * to look into down the line. May be something like /proc/kernelmem or may
+ * be zone data structures exported from kernel.
+ */
+static int get_crash_memory_ranges(struct memory_range **range, int *ranges)
+{
+
+ char device_tree[256] = "/proc/device-tree/";
+ char fname[256];
+ DIR *dir, *dmem;
+ int fd;
+ struct dirent *dentry, *mentry;
+ int n, crash_rng_len = 0;
+ unsigned long long start, end, cstart, cend;
+
+ crash_max_memory_ranges = max_memory_ranges + 6;
+ crash_rng_len = sizeof(struct memory_range) * crash_max_memory_ranges;
+
+ crash_memory_range = (struct memory_range *) malloc(crash_rng_len);
+ if (!crash_memory_range) {
+ fprintf(stderr, "Allocation for crash memory range failed\n");
+ return -1;
+ }
+ memset(crash_memory_range, 0, crash_rng_len);
+ crash_nr_memory_ranges = 0;
+
+#ifndef CONFIG_BOOKE
+ /* create a separate program header for the backup region */
+ add_crash_memory_range(BACKUP_SRC_START, BACKUP_SRC_END + 1);
+#endif
+
+ dir = opendir(device_tree);
+ if (!dir) {
+ perror(device_tree);
+ goto err;
+ }
+ while ((dentry = readdir(dir)) != NULL) {
+ if (strncmp(dentry->d_name, "memory@", 7)
+ && strcmp(dentry->d_name, "memory"))
+ continue;
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ dmem = opendir(fname);
+ if (!dmem) {
+ perror(fname);
+ closedir(dir);
+ goto err;
+ }
+ while ((mentry = readdir(dmem)) != NULL) {
+ if (strcmp(mentry->d_name, "reg"))
+ continue;
+ strcat(fname, "/reg");
+ fd = open(fname, O_RDONLY);
+ if (fd < 0) {
+ perror(fname);
+ closedir(dmem);
+ closedir(dir);
+ goto err;
+ }
+ n = read_memory_region_limits(fd, &start, &end);
+ /* We are done with fd, close it. */
+ close(fd);
+ if (n != 0) {
+ closedir(dmem);
+ closedir(dir);
+ goto err;
+ }
+#ifndef CONFIG_BOOKE
+ if (start == 0 && end >= (BACKUP_SRC_END + 1))
+ start = BACKUP_SRC_END + 1;
+#endif
+
+ /*
+ * Exclude the region that lies within crashkernel.
+ * If memory limit is set then exclude memory region
+ * above it.
+ */
+
+ if (memory_limit) {
+ if (start >= memory_limit)
+ continue;
+ if (end > memory_limit)
+ end = memory_limit;
+ }
+
+ /*
+ * Exclure region used by crash kernel
+ */
+ cstart = crash_base;
+ cend = crash_base + crash_size;
+
+ if (cstart >= end || cend <= start)
+ add_crash_memory_range(start, end);
+ else {
+ if (start < cstart)
+ add_crash_memory_range(start, cstart);
+ if (cend < end)
+ add_crash_memory_range(cend, end);
+ }
+ }
+ closedir(dmem);
+ }
+ closedir(dir);
+
+ /*
+ * If RTAS region is overlapped with crashkernel, need to create ELF
+ * Program header for the overlapped memory.
+ */
+ if (crash_base < rtas_base + rtas_size &&
+ rtas_base < crash_base + crash_size) {
+ cstart = rtas_base;
+ cend = rtas_base + rtas_size;
+ if (cstart < crash_base)
+ cstart = crash_base;
+ if (cend > crash_base + crash_size)
+ cend = crash_base + crash_size;
+ add_crash_memory_range(cstart, cend);
+ }
+
+ if (crash_nr_memory_ranges >= crash_max_memory_ranges) {
+ fprintf(stderr,
+ "Error: Number of crash memory ranges"
+ " excedeed the max limit\n");
+ goto err;
+ }
+
+ *range = crash_memory_range;
+ *ranges = crash_nr_memory_ranges;
+
+ int j;
+ dbgprintf("CRASH MEMORY RANGES\n");
+ for (j = 0; j < *ranges; j++) {
+ start = crash_memory_range[j].start;
+ end = crash_memory_range[j].end;
+ dbgprintf("%016Lx-%016Lx\n", start, end);
+ }
+
+ return 0;
+
+err:
+ if (crash_memory_range)
+ free(crash_memory_range);
+ return -1;
+}
+
+/* Converts unsigned long to ascii string. */
+static void ulltoa(unsigned long long i, char *str)
+{
+ int j = 0, k;
+ char tmp;
+
+ do {
+ str[j++] = i % 10 + '0';
+ } while ((i /= 10) > 0);
+ str[j] = '\0';
+
+ /* Reverse the string. */
+ for (j = 0, k = strlen(str) - 1; j < k; j++, k--) {
+ tmp = str[k];
+ str[k] = str[j];
+ str[j] = tmp;
+ }
+}
+
+/* Append str to cmdline */
+static void add_cmdline(char *cmdline, char *str)
+{
+ int cmdline_size;
+ int cmdlen = strlen(cmdline) + strlen(str);
+
+ cmdline_size = COMMAND_LINE_SIZE;
+ if (cmdlen > (cmdline_size - 1))
+ die("Command line overflow\n");
+ strcat(cmdline, str);
+}
+
+static int add_cmdline_param(char *cmdline, unsigned long long addr,
+ char *cmdstr, char *byte)
+{
+ int align = 1024;
+ char str[COMMAND_LINE_SIZE], *ptr;
+
+ /* Passing in =xxxK / =xxxM format. Saves space required in cmdline.*/
+ switch (byte[0]) {
+ case 'K':
+ if (addr%align)
+ return -1;
+ addr = addr/align;
+ break;
+ case 'M':
+ addr = addr/(align *align);
+ break;
+ }
+ ptr = str;
+ strcpy(str, cmdstr);
+ ptr += strlen(str);
+ ulltoa(addr, ptr);
+ strcat(str, byte);
+
+ add_cmdline(cmdline, str);
+
+ dbgprintf("Command line after adding elfcorehdr: %s\n", cmdline);
+
+ return 0;
+}
+
+/* Loads additional segments in case of a panic kernel is being loaded.
+ * One segment for backup region, another segment for storing elf headers
+ * for crash memory image.
+ */
+int load_crashdump_segments(struct kexec_info *info, char *mod_cmdline,
+ unsigned long max_addr, unsigned long min_base)
+{
+ void *tmp;
+ unsigned long sz, elfcorehdr;
+ int nr_ranges, align = 1024, i;
+ unsigned long long end;
+ struct memory_range *mem_range;
+
+ if (get_crash_memory_ranges(&mem_range, &nr_ranges) < 0)
+ return -1;
+
+ info->backup_src_start = BACKUP_SRC_START;
+ info->backup_src_size = BACKUP_SRC_SIZE;
+#ifndef CONFIG_BOOKE
+ /* Create a backup region segment to store backup data*/
+ sz = _ALIGN(BACKUP_SRC_SIZE, align);
+ tmp = xmalloc(sz);
+ memset(tmp, 0, sz);
+ info->backup_start = add_buffer(info, tmp, sz, sz, align,
+ 0, max_addr, 1);
+ reserve(info->backup_start, sz);
+#endif
+
+ /* On powerpc memory ranges in device-tree is denoted as start
+ * and size rather than start and end, as is the case with
+ * other architectures like i386 . Because of this when loading
+ * the memory ranges in crashdump-elf.c the filesz calculation
+ * [ end - start + 1 ] goes for a toss.
+ *
+ * To be in sync with other archs adjust the end value for
+ * every crash memory range before calling the generic function
+ */
+
+ for (i = 0; i < nr_ranges; i++) {
+ end = crash_memory_range[i].end - 1;
+ crash_memory_range[i].end = end;
+ }
+
+
+#ifdef CONFIG_PPC64
+ /* Create elf header segment and store crash image data. */
+ if (arch_options.core_header_type == CORE_TYPE_ELF64) {
+ if (crash_create_elf64_headers(info, &elf_info64,
+ crash_memory_range, nr_ranges, &tmp,
+ &sz, ELF_CORE_HEADER_ALIGN) < 0)
+ return -1;
+ } else if (crash_create_elf32_headers(info, &elf_info32,
+ crash_memory_range, nr_ranges, &tmp, &sz,
+ ELF_CORE_HEADER_ALIGN) < 0)
+ return -1;
+#else
+ if (crash_create_elf32_headers(info, &elf_info32, crash_memory_range,
+ nr_ranges, &tmp, &sz, ELF_CORE_HEADER_ALIGN)
+ < 0)
+ return -1;
+#endif
+
+ elfcorehdr = add_buffer(info, tmp, sz, sz, align,
+ min_base, max_addr, 1);
+ reserve(elfcorehdr, sz);
+ /* modify and store the cmdline in a global array. This is later
+ * read by flatten_device_tree and modified if required
+ */
+ add_cmdline_param(mod_cmdline, elfcorehdr, " elfcorehdr=", "K");
+ add_cmdline(mod_cmdline, " maxcpus=1");
+ return 0;
+}
+
+/*
+ * Used to save various memory regions needed for the captured kernel.
+ */
+
+void add_usable_mem_rgns(unsigned long long base, unsigned long long size)
+{
+ int i;
+ unsigned long long end = base + size;
+ unsigned long long ustart, uend;
+
+ base = _ALIGN_DOWN(base, getpagesize());
+ end = _ALIGN_UP(end, getpagesize());
+
+ for (i = 0; i < usablemem_rgns.size; i++) {
+ ustart = usablemem_rgns.ranges[i].start;
+ uend = usablemem_rgns.ranges[i].end;
+ if (base < uend && end > ustart) {
+ if ((base >= ustart) && (end <= uend))
+ return;
+ if (base < ustart && end > uend) {
+ usablemem_rgns.ranges[i].start = base;
+ usablemem_rgns.ranges[i].end = end;
+ return;
+ } else if (base < ustart) {
+ usablemem_rgns.ranges[i].start = base;
+ return;
+ } else if (end > uend) {
+ usablemem_rgns.ranges[i].end = end;
+ return;
+ }
+ }
+ }
+ usablemem_rgns.ranges[usablemem_rgns.size].start = base;
+ usablemem_rgns.ranges[usablemem_rgns.size++].end = end;
+
+ dbgprintf("usable memory rgns size:%u base:%llx size:%llx\n",
+ usablemem_rgns.size, base, size);
+}
+
+int get_crash_kernel_load_range(uint64_t *start, uint64_t *end)
+{
+ unsigned long long value;
+
+ if (!get_devtree_value(DEVTREE_CRASHKERNEL_BASE, &value))
+ *start = value;
+ else
+ return -1;
+
+ if (!get_devtree_value(DEVTREE_CRASHKERNEL_SIZE, &value))
+ *end = *start + value - 1;
+ else
+ return -1;
+
+ return 0;
+}
+
+int is_crashkernel_mem_reserved(void)
+{
+ int fd;
+
+ fd = open(DEVTREE_CRASHKERNEL_BASE, O_RDONLY);
+ if (fd < 0)
+ return 0;
+ close(fd);
+ return 1;
+}
+
diff --git a/kexec/arch/ppc/crashdump-powerpc.h b/kexec/arch/ppc/crashdump-powerpc.h
new file mode 100644
index 0000000..97b5095
--- /dev/null
+++ b/kexec/arch/ppc/crashdump-powerpc.h
@@ -0,0 +1,45 @@
+#ifndef CRASHDUMP_POWERPC_H
+#define CRASHDUMP_POWERPC_H
+
+struct kexec_info;
+int load_crashdump_segments(struct kexec_info *info, char *mod_cmdline,
+ unsigned long max_addr, unsigned long min_base);
+void add_usable_mem_rgns(unsigned long long base, unsigned long long size);
+
+extern struct arch_options_t arch_options;
+
+#ifdef CONFIG_PPC64
+#define PAGE_OFFSET 0xC000000000000000UL
+#define VMALLOCBASE 0xD000000000000000UL
+#define MAXMEM (-KERNELBASE-VMALLOCBASE)
+#else
+#define PAGE_OFFSET 0xC0000000
+#define MAXMEM 0x30000000 /* Use CONFIG_LOWMEM_SIZE from kernel */
+#endif
+
+#define KERNELBASE PAGE_OFFSET
+#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET)
+
+#ifdef CONFIG_BOOKE
+/* We don't need backup region in Book E */
+#define BACKUP_SRC_START 0x0000
+#define BACKUP_SRC_END 0x0000
+#define BACKUP_SRC_SIZE 0x0000
+#else
+/* Backup Region, First 64K of System RAM. */
+#define BACKUP_SRC_START 0x0000
+#define BACKUP_SRC_END 0xffff
+#define BACKUP_SRC_SIZE (BACKUP_SRC_END - BACKUP_SRC_START + 1)
+#endif
+
+#define KDUMP_BACKUP_LIMIT BACKUP_SRC_SIZE
+
+extern unsigned long long crash_base;
+extern unsigned long long crash_size;
+extern unsigned int rtas_base;
+extern unsigned int rtas_size;
+extern uint64_t opal_base;
+extern uint64_t opal_size;
+extern uint64_t memory_limit;
+
+#endif /* CRASHDUMP_POWERPC_H */
diff --git a/kexec/arch/ppc/fixup_dtb.c b/kexec/arch/ppc/fixup_dtb.c
new file mode 100644
index 0000000..92a0bfd
--- /dev/null
+++ b/kexec/arch/ppc/fixup_dtb.c
@@ -0,0 +1,408 @@
+#define _GNU_SOURCE
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include <libfdt.h>
+#include "ops.h"
+#include "page.h"
+#include "fixup_dtb.h"
+#include "kexec-ppc.h"
+
+const char proc_dts[] = "/proc/device-tree";
+
+static void print_fdt_reserve_regions(char *blob_buf)
+{
+ int i, num;
+
+ if (!kexec_debug)
+ return;
+ /* Print out a summary of the final reserve regions */
+ num = fdt_num_mem_rsv(blob_buf);
+ dbgprintf ("reserve regions: %d\n", num);
+ for (i = 0; i < num; i++) {
+ uint64_t offset, size;
+
+ if (fdt_get_mem_rsv(blob_buf, i, &offset, &size) == 0) {
+ dbgprintf("%d: offset: %llx, size: %llx\n", i, offset, size);
+ } else {
+ dbgprintf("Error retreiving reserved region\n");
+ }
+ }
+}
+
+
+static void fixup_nodes(char *nodes[])
+{
+ int index = 0;
+ char *fname;
+ char *prop_name;
+ char *node_name;
+ void *node;
+ int len;
+ char *content;
+ off_t content_size;
+ int ret;
+
+ while (nodes[index]) {
+
+ len = asprintf(&fname, "%s%s", proc_dts, nodes[index]);
+ if (len < 0)
+ die("asprintf() failed\n");
+
+ content = slurp_file(fname, &content_size);
+ if (!content) {
+ die("Can't open %s: %s\n", fname, strerror(errno));
+ }
+
+ prop_name = fname + len;
+ while (*prop_name != '/')
+ prop_name--;
+
+ *prop_name = '\0';
+ prop_name++;
+
+ node_name = fname + sizeof(proc_dts) - 1;
+
+ node = finddevice(node_name);
+ if (!node)
+ node = create_node(NULL, node_name + 1);
+
+ ret = setprop(node, prop_name, content, content_size);
+ if (ret < 0)
+ die("setprop of %s/%s size: %ld failed: %s\n",
+ node_name, prop_name, content_size,
+ fdt_strerror(ret));
+
+ free(content);
+ free(fname);
+ index++;
+ };
+}
+
+/*
+ * command line priority:
+ * - use the supplied command line
+ * - if none available use the command line from .dtb
+ * - if not available use the current command line
+ */
+static void fixup_cmdline(const char *cmdline)
+{
+ void *chosen;
+ char *fixup_cmd_node[] = {
+ "/chosen/bootargs",
+ NULL,
+ };
+
+ chosen = finddevice("/chosen");
+
+ if (!cmdline) {
+ if (!chosen)
+ fixup_nodes(fixup_cmd_node);
+ } else {
+ if (!chosen)
+ chosen = create_node(NULL, "chosen");
+ setprop_str(chosen, "bootargs", cmdline);
+ }
+ return;
+}
+
+#define EXPAND_GRANULARITY 1024
+
+static char *expand_buf(int minexpand, char *blob_buf, off_t *blob_size)
+{
+ int size = fdt_totalsize(blob_buf);
+ int rc;
+
+ size = _ALIGN(size + minexpand, EXPAND_GRANULARITY);
+ blob_buf = realloc(blob_buf, size);
+ if (!blob_buf)
+ die("Couldn't find %d bytes to expand device tree\n\r", size);
+ rc = fdt_open_into(blob_buf, blob_buf, size);
+ if (rc != 0)
+ die("Couldn't expand fdt into new buffer: %s\n\r",
+ fdt_strerror(rc));
+
+ *blob_size = fdt_totalsize(blob_buf);
+
+ return blob_buf;
+}
+
+static void fixup_reserve_regions(struct kexec_info *info, char *blob_buf)
+{
+ int ret, i;
+ int nodeoffset;
+ u64 val = 0;
+
+ /* If this is a KEXEC kernel we add all regions since they will
+ * all need to be saved */
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ for (i = 0; i < info->nr_segments; i++) {
+ uint64_t address = (unsigned long)info->segment[i].mem;
+ uint64_t size = info->segment[i].memsz;
+
+ while ((i+1) < info->nr_segments &&
+ (address + size == (unsigned long)info->segment[i+1].mem)) {
+ size += info->segment[++i].memsz;
+ }
+
+ ret = fdt_add_mem_rsv(blob_buf, address, size);
+ if (ret) {
+ printf("%s: Error adding memory range to memreserve!\n",
+ fdt_strerror(ret));
+ goto out;
+ }
+ }
+ } else if (ramdisk || reuse_initrd) {
+ /* Otherwise we just add back the ramdisk and the device tree
+ * is already in the list */
+ ret = fdt_add_mem_rsv(blob_buf, ramdisk_base, ramdisk_size);
+ if (ret) {
+ printf("%s: Unable to add new reserved memory for initrd flat device tree\n",
+ fdt_strerror(ret));
+ goto out;
+ }
+ }
+
+#if 0
+ /* XXX: Do not reserve spin-table for CPUs. */
+
+ /* Add reserve regions for cpu-release-addr */
+ nodeoffset = fdt_node_offset_by_prop_value(blob_buf, -1, "device_type", "cpu", 4);
+ while (nodeoffset != -FDT_ERR_NOTFOUND) {
+ const void *buf;
+ int sz, ret;
+ u64 tmp;
+
+ buf = fdt_getprop(blob_buf, nodeoffset, "cpu-release-addr", &sz);
+
+ if (buf) {
+ if (sz == 4) {
+ tmp = *(u32 *)buf;
+ } else if (sz == 8) {
+ tmp = *(u64 *)buf;
+ }
+
+ /* crude check to see if last value is repeated */
+ if (_ALIGN_DOWN(tmp, PAGE_SIZE) != _ALIGN_DOWN(val, PAGE_SIZE)) {
+ val = tmp;
+ ret = fdt_add_mem_rsv(blob_buf, _ALIGN_DOWN(val, PAGE_SIZE), PAGE_SIZE);
+ if (ret)
+ printf("%s: Unable to add reserve for cpu-release-addr!\n",
+ fdt_strerror(ret));
+ }
+ }
+
+ nodeoffset = fdt_node_offset_by_prop_value(blob_buf, nodeoffset,
+ "device_type", "cpu", 4);
+ }
+#endif
+
+out:
+ print_fdt_reserve_regions(blob_buf);
+}
+
+static void fixup_memory(struct kexec_info *info, char *blob_buf)
+{
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ int nodeoffset, len = 0;
+ u8 tmp[16];
+ const unsigned long *addrcell, *sizecell;
+
+ nodeoffset = fdt_path_offset(blob_buf, "/memory");
+
+ if (nodeoffset < 0) {
+ printf("Error searching for memory node!\n");
+ return;
+ }
+
+ addrcell = fdt_getprop(blob_buf, 0, "#address-cells", NULL);
+ /* use shifts and mask to ensure endianness */
+ if ((addrcell) && (*addrcell == 2)) {
+ tmp[0] = (crash_base >> 56) & 0xff;
+ tmp[1] = (crash_base >> 48) & 0xff;
+ tmp[2] = (crash_base >> 40) & 0xff;
+ tmp[3] = (crash_base >> 32) & 0xff;
+ tmp[4] = (crash_base >> 24) & 0xff;
+ tmp[5] = (crash_base >> 16) & 0xff;
+ tmp[6] = (crash_base >> 8) & 0xff;
+ tmp[7] = (crash_base ) & 0xff;
+ len = 8;
+ } else {
+ tmp[0] = (crash_base >> 24) & 0xff;
+ tmp[1] = (crash_base >> 16) & 0xff;
+ tmp[2] = (crash_base >> 8) & 0xff;
+ tmp[3] = (crash_base ) & 0xff;
+ len = 4;
+ }
+
+ sizecell = fdt_getprop(blob_buf, 0, "#size-cells", NULL);
+ /* use shifts and mask to ensure endianness */
+ if ((sizecell) && (*sizecell == 2)) {
+ tmp[0+len] = (crash_size >> 56) & 0xff;
+ tmp[1+len] = (crash_size >> 48) & 0xff;
+ tmp[2+len] = (crash_size >> 40) & 0xff;
+ tmp[3+len] = (crash_size >> 32) & 0xff;
+ tmp[4+len] = (crash_size >> 24) & 0xff;
+ tmp[5+len] = (crash_size >> 16) & 0xff;
+ tmp[6+len] = (crash_size >> 8) & 0xff;
+ tmp[7+len] = (crash_size ) & 0xff;
+ len += 8;
+ } else {
+ tmp[0+len] = (crash_size >> 24) & 0xff;
+ tmp[1+len] = (crash_size >> 16) & 0xff;
+ tmp[2+len] = (crash_size >> 8) & 0xff;
+ tmp[3+len] = (crash_size ) & 0xff;
+ len += 4;
+ }
+
+ if (fdt_setprop(blob_buf, nodeoffset, "reg", tmp, len) != 0) {
+ printf ("Error setting memory node!\n");
+ }
+
+ fdt_delprop(blob_buf, nodeoffset, "linux,usable-memory");
+ }
+}
+
+/* removes crashkernel nodes if they exist and we are *rebooting*
+ * into a crashkernel. These nodes should not exist after we
+ * crash and reboot into a new kernel
+ */
+static void fixup_crashkernel(struct kexec_info *info, char *blob_buf)
+{
+ int nodeoffset;
+
+ nodeoffset = fdt_path_offset(blob_buf, "/chosen");
+
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ if (nodeoffset < 0) {
+ printf("fdt_crashkernel: %s\n", fdt_strerror(nodeoffset));
+ return;
+ }
+
+ fdt_delprop(blob_buf, nodeoffset, "linux,crashkernel-base");
+ fdt_delprop(blob_buf, nodeoffset, "linux,crashkernel-size");
+ }
+}
+/* remove the old chosen nodes if they exist and add correct chosen
+ * nodes if we have an initd
+ */
+static void fixup_initrd(char *blob_buf)
+{
+ int err, nodeoffset;
+ unsigned long tmp;
+
+ nodeoffset = fdt_path_offset(blob_buf, "/chosen");
+
+ if (nodeoffset < 0) {
+ printf("fdt_initrd: %s\n", fdt_strerror(nodeoffset));
+ return;
+ }
+
+ fdt_delprop(blob_buf, nodeoffset, "linux,initrd-start");
+ fdt_delprop(blob_buf, nodeoffset, "linux,initrd-end");
+
+ if ((reuse_initrd || ramdisk) &&
+ ((ramdisk_base != 0) && (ramdisk_size != 0))) {
+ tmp = ramdisk_base;
+ err = fdt_setprop(blob_buf, nodeoffset,
+ "linux,initrd-start", &tmp, sizeof(tmp));
+ if (err < 0) {
+ printf("WARNING: "
+ "could not set linux,initrd-start %s.\n",
+ fdt_strerror(err));
+ return;
+ }
+
+ tmp = ramdisk_base + ramdisk_size;
+ err = fdt_setprop(blob_buf, nodeoffset,
+ "linux,initrd-end", &tmp, sizeof(tmp));
+ if (err < 0) {
+ printf("WARNING: could not set linux,initrd-end %s.\n",
+ fdt_strerror(err));
+ return;
+ }
+ }
+}
+
+char *fixup_dtb_init(struct kexec_info *info, char *blob_buf, off_t *blob_size,
+ unsigned long hole_addr, unsigned long *dtb_addr)
+{
+ int ret, i, num = fdt_num_mem_rsv(blob_buf);
+
+ fdt_init(blob_buf);
+
+ /* Remove the existing reserve regions as they will no longer
+ * be valid after we reboot */
+ for (i = num - 1; i >= 0; i--) {
+ ret = fdt_del_mem_rsv(blob_buf, i);
+ if (ret) {
+ printf("%s: Error deleting memory reserve region %d from device tree!\n",
+ fdt_strerror(ret), i);
+ }
+ }
+
+ /* Pack the FDT first, so we don't grow excessively if there is already free space */
+ ret = fdt_pack(blob_buf);
+ if (ret)
+ printf("%s: Unable to pack flat device tree\n", fdt_strerror(ret));
+
+ /* info->nr_segments just a guide, will grow by at least EXPAND_GRANULARITY */
+ blob_buf = expand_buf(info->nr_segments * sizeof(struct fdt_reserve_entry),
+ blob_buf, blob_size);
+
+ /* add reserve region for *THIS* fdt */
+ *dtb_addr = locate_hole(info, *blob_size, 0,
+ hole_addr, hole_addr+KERNEL_ACCESS_TOP, -1);
+ ret = fdt_add_mem_rsv(blob_buf, *dtb_addr, PAGE_ALIGN(*blob_size));
+ if (ret) {
+ printf("%s: Unable to add new reserved memory for the flat device tree\n",
+ fdt_strerror(ret));
+ }
+
+ return blob_buf;
+}
+
+static void save_fixed_up_dtb(char *blob_buf, off_t blob_size)
+{
+ FILE *fp;
+
+ if (!kexec_debug)
+ return;
+ fp = fopen("debug.dtb", "w");
+ if (fp) {
+ if ( blob_size == fwrite(blob_buf, sizeof(char), blob_size, fp)) {
+ dbgprintf("debug.dtb written\n");
+ } else {
+ dbgprintf("Unable to write debug.dtb\n");
+ }
+
+ fclose(fp);
+ } else {
+ dbgprintf("Unable to dump flat device tree to debug.dtb\n");
+ }
+}
+
+char *fixup_dtb_finalize(struct kexec_info *info, char *blob_buf, off_t *blob_size,
+ char *nodes[], char *cmdline)
+{
+ fixup_nodes(nodes);
+ fixup_cmdline(cmdline);
+ fixup_reserve_regions(info, blob_buf);
+ fixup_memory(info, blob_buf);
+ fixup_initrd(blob_buf);
+ fixup_crashkernel(info, blob_buf);
+
+ blob_buf = (char *)dt_ops.finalize();
+ *blob_size = fdt_totalsize(blob_buf);
+
+ save_fixed_up_dtb(blob_buf, *blob_size);
+
+ return blob_buf;
+}
diff --git a/kexec/arch/ppc/fixup_dtb.h b/kexec/arch/ppc/fixup_dtb.h
new file mode 100644
index 0000000..b706a5a
--- /dev/null
+++ b/kexec/arch/ppc/fixup_dtb.h
@@ -0,0 +1,10 @@
+#ifndef __FIXUP_DTB_H
+#define __FIXUP_DTB_H
+
+char *fixup_dtb_init(struct kexec_info *info, char *blob_buf, off_t *blob_size,
+ unsigned long hole_addr, unsigned long *dtb_addr);
+
+char *fixup_dtb_finalize(struct kexec_info *info, char *blob_buf, off_t *blob_size,
+ char *nodes[], char *cmdline);
+
+#endif
diff --git a/kexec/arch/ppc/fs2dt.c b/kexec/arch/ppc/fs2dt.c
new file mode 100644
index 0000000..fed499b
--- /dev/null
+++ b/kexec/arch/ppc/fs2dt.c
@@ -0,0 +1,471 @@
+/*
+ * fs2dt: creates a flattened device-tree
+ *
+ * Copyright (C) 2004,2005 Milton D Miller II, IBM Corporation
+ * Copyright (C) 2005 R Sharada (sharada@in.ibm.com), IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <fcntl.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <stdio.h>
+#include "../../kexec.h"
+#include "kexec-ppc.h"
+#include "types.h"
+
+#define MAXPATH 1024 /* max path name length */
+#define NAMESPACE 16384 /* max bytes for property names */
+#define TREEWORDS 65536 /* max 32 bit words for properties */
+#define MEMRESERVE 256 /* max number of reserved memory blks */
+#define MAX_MEMORY_RANGES 1024
+
+static char pathname[MAXPATH];
+static char propnames[NAMESPACE] = { 0 };
+static unsigned dtstruct[TREEWORDS], *dt;
+static unsigned long long mem_rsrv[2*MEMRESERVE] = { 0, 0 };
+
+static int crash_param;
+static char local_cmdline[COMMAND_LINE_SIZE] = { "" };
+static unsigned *dt_len; /* changed len of modified cmdline
+ in flat device-tree */
+static struct bootblock bb[1];
+
+void reserve(unsigned long long where, unsigned long long length)
+{
+ size_t offset;
+
+ for (offset = 0; mem_rsrv[offset + 1]; offset += 2)
+ ;
+
+ if (offset + 4 >= 2 * MEMRESERVE)
+ die("unrecoverable error: exhasuted reservation meta data\n");
+
+ mem_rsrv[offset] = where;
+ mem_rsrv[offset + 1] = length;
+ mem_rsrv[offset + 3] = 0; /* N.B: don't care about offset + 2 */
+}
+
+/* look for properties we need to reserve memory space for */
+static void checkprop(char *name, unsigned *data, int len)
+{
+ static unsigned long long base, size, end;
+
+ if ((data == NULL) && (base || size || end))
+ die("unrecoverable error: no property data");
+ else if (!strcmp(name, "linux,rtas-base"))
+ base = *data;
+ else if (!strcmp(name, "linux,tce-base"))
+ base = *(unsigned long long *) data;
+ else if (!strcmp(name, "rtas-size") ||
+ !strcmp(name, "linux,tce-size"))
+ size = *data;
+ else if (reuse_initrd && !strcmp(name, "linux,initrd-start"))
+ if (len == 8)
+ base = *(unsigned long long *) data;
+ else
+ base = *data;
+ else if (reuse_initrd && !strcmp(name, "linux,initrd-end"))
+ end = *(unsigned long long *) data;
+
+ if (size && end)
+ die("unrecoverable error: size and end set at same time\n");
+ if (base && size) {
+ reserve(base, size);
+ base = 0;
+ size = 0;
+ }
+ if (base && end) {
+ reserve(base, end-base);
+ base = 0;
+ end = 0;
+ }
+}
+
+/*
+ * return the property index for a property name, creating a new one
+ * if needed.
+ */
+static unsigned propnum(const char *name)
+{
+ unsigned offset = 0;
+
+ while (propnames[offset])
+ if (strcmp(name, propnames+offset))
+ offset += strlen(propnames+offset)+1;
+ else
+ return offset;
+
+ if (NAMESPACE - offset < strlen(name) + 1)
+ die("unrecoverable error: propnames overrun\n");
+
+ strcpy(propnames+offset, name);
+
+ return offset;
+}
+
+static void add_usable_mem_property(int fd, int len)
+{
+ char fname[MAXPATH], *bname;
+ unsigned long buf[2];
+ unsigned long ranges[2*MAX_MEMORY_RANGES];
+ unsigned long long base, end, loc_base, loc_end;
+ int range, rlen = 0;
+
+ strcpy(fname, pathname);
+ bname = strrchr(fname, '/');
+ bname[0] = '\0';
+ bname = strrchr(fname, '/');
+ if (strncmp(bname, "/memory@", 8) && strcmp(bname, "/memory"))
+ return;
+
+ if (lseek(fd, 0, SEEK_SET) < 0)
+ die("unrecoverable error: error seeking in \"%s\": %s\n",
+ pathname, strerror(errno));
+ if (read_memory_region_limits(fd, &base, &end) != 0)
+ die("unrecoverable error: error parsing memory/reg limits\n");
+
+ for (range = 0; range < usablemem_rgns.size; range++) {
+ loc_base = usablemem_rgns.ranges[range].start;
+ loc_end = usablemem_rgns.ranges[range].end;
+ if (loc_base >= base && loc_end <= end) {
+ ranges[rlen++] = loc_base;
+ ranges[rlen++] = loc_end - loc_base;
+ } else if (base < loc_end && end > loc_base) {
+ if (loc_base < base)
+ loc_base = base;
+ if (loc_end > end)
+ loc_end = end;
+ ranges[rlen++] = loc_base;
+ ranges[rlen++] = loc_end - loc_base;
+ }
+ }
+
+ if (!rlen) {
+ /*
+ * User did not pass any ranges for thsi region. Hence, write
+ * (0,0) duple in linux,usable-memory property such that
+ * this region will be ignored.
+ */
+ ranges[rlen++] = 0;
+ ranges[rlen++] = 0;
+ }
+
+ rlen = rlen * sizeof(unsigned long);
+ /*
+ * No add linux,usable-memory property.
+ */
+ *dt++ = 3;
+ *dt++ = rlen;
+ *dt++ = propnum("linux,usable-memory");
+ memcpy(dt, &ranges, rlen);
+ dt += (rlen + 3)/4;
+}
+
+/* put all properties (files) in the property structure */
+static void putprops(char *fn, struct dirent **nlist, int numlist)
+{
+ struct dirent *dp;
+ int i = 0, fd, len;
+ struct stat statbuf;
+
+ for (i = 0; i < numlist; i++) {
+ dp = nlist[i];
+ strcpy(fn, dp->d_name);
+
+ if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
+ continue;
+
+ if (lstat(pathname, &statbuf))
+ die("unrecoverable error: could not stat \"%s\": %s\n",
+ pathname, strerror(errno));
+
+ if (!crash_param && !strcmp(fn, "linux,crashkernel-base"))
+ continue;
+
+ if (!crash_param && !strcmp(fn, "linux,crashkernel-size"))
+ continue;
+
+ /*
+ * This property will be created for each node during kexec
+ * boot. So, ignore it.
+ */
+ if (!strcmp(dp->d_name, "linux,pci-domain") ||
+ !strcmp(dp->d_name, "linux,htab-base") ||
+ !strcmp(dp->d_name, "linux,htab-size") ||
+ !strcmp(dp->d_name, "linux,kernel-end") ||
+ !strcmp(dp->d_name, "linux,usable-memory"))
+ continue;
+
+ /* This property will be created/modified later in putnode()
+ * So ignore it, unless we are reusing the initrd.
+ */
+ if ((!strcmp(dp->d_name, "linux,initrd-start") ||
+ !strcmp(dp->d_name, "linux,initrd-end")) &&
+ !reuse_initrd)
+ continue;
+
+ if (!S_ISREG(statbuf.st_mode))
+ continue;
+
+ len = statbuf.st_size;
+
+ *dt++ = 3;
+ dt_len = dt;
+ *dt++ = len;
+ *dt++ = propnum(fn);
+
+ fd = open(pathname, O_RDONLY);
+ if (fd == -1)
+ die("unrecoverable error: could not open \"%s\": %s\n",
+ pathname, strerror(errno));
+
+ if (read(fd, dt, len) != len)
+ die("unrecoverable error: could not read \"%s\": %s\n",
+ pathname, strerror(errno));
+
+ checkprop(fn, dt, len);
+
+ /* Get the cmdline from the device-tree and modify it */
+ if (!strcmp(dp->d_name, "bootargs")) {
+ int cmd_len;
+ char temp_cmdline[COMMAND_LINE_SIZE] = { "" };
+ char *param = NULL;
+ cmd_len = strlen(local_cmdline);
+ if (cmd_len != 0) {
+ param = strstr(local_cmdline, "crashkernel=");
+ if (param)
+ crash_param = 1;
+ param = strstr(local_cmdline, "root=");
+ }
+ if (!param) {
+ char *old_param;
+ memcpy(temp_cmdline, dt, len);
+ param = strstr(temp_cmdline, "root=");
+ if (param) {
+ old_param = strtok(param, " ");
+ if (cmd_len != 0)
+ strcat(local_cmdline, " ");
+ strcat(local_cmdline, old_param);
+ }
+ }
+ strcat(local_cmdline, " ");
+ cmd_len = strlen(local_cmdline);
+ cmd_len = cmd_len + 1;
+ memcpy(dt, local_cmdline, cmd_len);
+ len = cmd_len;
+ *dt_len = cmd_len;
+
+ dbgprintf("Modified cmdline:%s\n", local_cmdline);
+
+ }
+
+ dt += (len + 3)/4;
+ if (!strcmp(dp->d_name, "reg") && usablemem_rgns.size)
+ add_usable_mem_property(fd, len);
+ close(fd);
+ }
+
+ fn[0] = '\0';
+ checkprop(pathname, NULL, 0);
+}
+
+/*
+ * Compare function used to sort the device-tree directories
+ * This function will be passed to scandir.
+ */
+static int comparefunc(const void *dentry1, const void *dentry2)
+{
+ char *str1 = (*(struct dirent **)dentry1)->d_name;
+ char *str2 = (*(struct dirent **)dentry2)->d_name;
+ char *p1, *p2;
+ int res = 0, max_len;
+
+ /*
+ * strcmp scans from left to right and fails to idetify for some
+ * strings such as memory@10000000 and memory@f000000.
+ * Therefore, we get the wrong sorted order like memory@10000000 and
+ * memory@f000000.
+ */
+ if ((p1 = strchr(str1, '@')) && (p2 = strchr(str2, '@'))) {
+ max_len = max(p1 - str1, p2 - str2);
+ if ((res = strncmp(str1, str2, max_len)) == 0) {
+ /* prefix is equal - compare part after '@' by length */
+ p1++; p2++;
+ res = strlen(p1) - strlen(p2);
+ if (res == 0)
+ /* equal length, compare by strcmp() */
+ res = strcmp(p1,p2);
+ }
+ } else {
+ res = strcmp(str1, str2);
+ }
+
+ return res;
+}
+
+/*
+ * put a node (directory) in the property structure. first properties
+ * then children.
+ */
+static void putnode(void)
+{
+ char *dn;
+ struct dirent *dp;
+ char *basename;
+ struct dirent **namelist;
+ int numlist, i;
+ struct stat statbuf;
+
+ numlist = scandir(pathname, &namelist, 0, comparefunc);
+ if (numlist < 0)
+ die("unrecoverable error: could not scan \"%s\": %s\n",
+ pathname, strerror(errno));
+ if (numlist == 0)
+ die("unrecoverable error: no directory entries in \"%s\"",
+ pathname);
+
+ basename = strrchr(pathname, '/') + 1;
+
+ *dt++ = 1;
+ strcpy((void *)dt, *basename ? basename : "");
+ dt += strlen((void *)dt) / sizeof(unsigned) + 1;
+
+ strcat(pathname, "/");
+ dn = pathname + strlen(pathname);
+
+ putprops(dn, namelist, numlist);
+
+ /*
+ * Add initrd entries to the second kernel
+ * if
+ * a) a ramdisk is specified in cmdline
+ * OR
+ * b) reuseinitrd is specified and a initrd is
+ * used by the kernel.
+ *
+ */
+ if ((ramdisk || (initrd_base && reuse_initrd))
+ && !strcmp(basename, "chosen/")) {
+ int len = 8;
+ unsigned long long initrd_end;
+ *dt++ = 3;
+ *dt++ = len;
+ *dt++ = propnum("linux,initrd-start");
+
+ memcpy(dt, &initrd_base, len);
+ dt += (len + 3)/4;
+
+ len = 8;
+ *dt++ = 3;
+ *dt++ = len;
+ *dt++ = propnum("linux,initrd-end");
+
+ initrd_end = initrd_base + initrd_size;
+
+ memcpy(dt, &initrd_end, len);
+ dt += (len + 3)/4;
+ /* reserve the existing initrd image in case of reuse_initrd */
+ if (initrd_base && initrd_size && reuse_initrd)
+ reserve(initrd_base, initrd_size);
+ }
+
+ for (i = 0; i < numlist; i++) {
+ dp = namelist[i];
+ strcpy(dn, dp->d_name);
+ free(namelist[i]);
+
+ if (!strcmp(dn, ".") || !strcmp(dn, ".."))
+ continue;
+
+ if (lstat(pathname, &statbuf))
+ die("unrecoverable error: could not stat \"%s\": %s\n",
+ pathname, strerror(errno));
+
+ if (S_ISDIR(statbuf.st_mode))
+ putnode();
+ }
+
+ *dt++ = 2;
+ dn[-1] = '\0';
+ free(namelist);
+}
+
+int create_flatten_tree(struct kexec_info *info, unsigned char **bufp,
+ unsigned long *sizep, char *cmdline)
+{
+ unsigned long len;
+ unsigned long tlen;
+ unsigned char *buf;
+ unsigned long me;
+
+ me = 0;
+
+ strcpy(pathname, "/proc/device-tree/");
+
+ dt = dtstruct;
+
+ if (cmdline)
+ strcpy(local_cmdline, cmdline);
+
+ putnode();
+ *dt++ = 9;
+
+ len = _ALIGN(sizeof(bb[0]), 8);
+
+ bb->off_mem_rsvmap = len;
+
+ for (len = 1; mem_rsrv[len]; len += 2)
+ ;
+ len += 3;
+ len *= sizeof(mem_rsrv[0]);
+
+ bb->off_dt_struct = bb->off_mem_rsvmap + len;
+
+ len = dt - dtstruct;
+ len *= sizeof(unsigned);
+ bb->dt_struct_size = len;
+ bb->off_dt_strings = bb->off_dt_struct + len;
+
+ len = propnum("");
+ bb->dt_strings_size = len;
+ len = _ALIGN(len, 4);
+ bb->totalsize = bb->off_dt_strings + len;
+
+ bb->magic = 0xd00dfeed;
+ bb->version = 17;
+ bb->last_comp_version = 16;
+
+ reserve(me, bb->totalsize); /* patched later in kexec_load */
+
+ buf = (unsigned char *) malloc(bb->totalsize);
+ *bufp = buf;
+ memcpy(buf, bb, bb->off_mem_rsvmap);
+ tlen = bb->off_mem_rsvmap;
+ memcpy(buf+tlen, mem_rsrv, bb->off_dt_struct - bb->off_mem_rsvmap);
+ tlen = tlen + (bb->off_dt_struct - bb->off_mem_rsvmap);
+ memcpy(buf+tlen, dtstruct, bb->off_dt_strings - bb->off_dt_struct);
+ tlen = tlen + (bb->off_dt_strings - bb->off_dt_struct);
+ memcpy(buf+tlen, propnames, bb->totalsize - bb->off_dt_strings);
+ tlen = tlen + bb->totalsize - bb->off_dt_strings;
+ *sizep = tlen;
+ return 0;
+}
diff --git a/kexec/arch/ppc/include/arch/options.h b/kexec/arch/ppc/include/arch/options.h
new file mode 100644
index 0000000..b2176ab
--- /dev/null
+++ b/kexec/arch/ppc/include/arch/options.h
@@ -0,0 +1,47 @@
+#ifndef KEXEC_ARCH_PPC_OPTIONS_H
+#define KEXEC_ARCH_PPC_OPTIONS_H
+
+#define OPT_ARCH_MAX (OPT_MAX+0)
+
+/* All 'local' loader options: */
+#define OPT_APPEND (OPT_ARCH_MAX+0)
+#define OPT_GAMECUBE (OPT_ARCH_MAX+1)
+#define OPT_DTB (OPT_ARCH_MAX+2)
+#define OPT_NODES (OPT_ARCH_MAX+3)
+#define OPT_RAMDISK (OPT_ARCH_MAX+4)
+
+/* Options relevant to the architecture (excluding loader-specific ones),
+ * in this case none:
+ */
+#define KEXEC_ARCH_OPTIONS \
+ KEXEC_OPTIONS \
+
+#define KEXEC_ARCH_OPT_STR KEXEC_OPT_STR ""
+
+/* The following two #defines list ALL of the options added by all of the
+ * architecture's loaders.
+ * o main() uses this complete list to scan for its options, ignoring
+ * arch-specific/loader-specific ones.
+ * o Then, arch_process_options() uses this complete list to scan for its
+ * options, ignoring general/loader-specific ones.
+ * o Then, the file_type[n].load re-scans for options, using
+ * KEXEC_ARCH_OPTIONS plus its loader-specific options subset.
+ * Any unrecognised options cause an error here.
+ *
+ * This is done so that main()'s/arch_process_options()'s getopt_long() calls
+ * don't choose a kernel filename from random arguments to options they don't
+ * recognise -- as they now recognise (if not act upon) all possible options.
+ */
+#define KEXEC_ALL_OPTIONS \
+ KEXEC_ARCH_OPTIONS \
+ {"command-line", 1, 0, OPT_APPEND},\
+ {"append", 1, 0, OPT_APPEND},\
+ {"ramdisk", 1, 0, OPT_APPEND},\
+ {"initrd", 1, 0, OPT_APPEND},\
+ {"gamecube", 1, 0, OPT_GAMECUBE},\
+ {"dtb", 1, 0, OPT_DTB},\
+ {"reuse-node", 1, 0, OPT_NODES},
+
+#define KEXEC_ALL_OPT_STR KEXEC_OPT_STR
+
+#endif /* KEXEC_ARCH_PPC_OPTIONS_H */
diff --git a/kexec/arch/ppc/include/page.h b/kexec/arch/ppc/include/page.h
new file mode 100644
index 0000000..65877bc
--- /dev/null
+++ b/kexec/arch/ppc/include/page.h
@@ -0,0 +1,27 @@
+#ifndef _PPC_BOOT_PAGE_H
+#define _PPC_BOOT_PAGE_H
+/*
+ * Copyright (C) 2001 PPC64 Team, IBM Corp
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifdef __ASSEMBLY__
+#define ASM_CONST(x) x
+#else
+#define __ASM_CONST(x) x##UL
+#define ASM_CONST(x) __ASM_CONST(x)
+#endif
+
+/* PAGE_SHIFT determines the page size */
+#define PAGE_SHIFT 12
+#define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT)
+#define PAGE_MASK (~(PAGE_SIZE-1))
+
+/* to align the pointer to the (next) page boundary */
+#define PAGE_ALIGN(addr) (((addr)+((PAGE_SIZE)-1))&(~((PAGE_SIZE)-1)))
+
+#endif /* _PPC_BOOT_PAGE_H */
diff --git a/kexec/arch/ppc/include/types.h b/kexec/arch/ppc/include/types.h
new file mode 100644
index 0000000..31393d1
--- /dev/null
+++ b/kexec/arch/ppc/include/types.h
@@ -0,0 +1,27 @@
+#ifndef _TYPES_H_
+#define _TYPES_H_
+
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+typedef unsigned char u8;
+typedef unsigned short u16;
+typedef unsigned int u32;
+typedef unsigned long long u64;
+typedef signed char s8;
+typedef short s16;
+typedef int s32;
+typedef long long s64;
+
+#define min(x,y) ({ \
+ typeof(x) _x = (x); \
+ typeof(y) _y = (y); \
+ (void) (&_x == &_y); \
+ _x < _y ? _x : _y; })
+
+#define max(x,y) ({ \
+ typeof(x) _x = (x); \
+ typeof(y) _y = (y); \
+ (void) (&_x == &_y); \
+ _x > _y ? _x : _y; })
+
+#endif /* _TYPES_H_ */
diff --git a/kexec/arch/ppc/kexec-dol-ppc.c b/kexec/arch/ppc/kexec-dol-ppc.c
new file mode 100644
index 0000000..800c072
--- /dev/null
+++ b/kexec/arch/ppc/kexec-dol-ppc.c
@@ -0,0 +1,468 @@
+/*
+ * kexec-dol-ppc.c - kexec DOL executable loader for the PowerPC
+ * Copyright (C) 2004 Albert Herranz
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <elf.h>
+#include <boot/elf_boot.h>
+#include <ip_checksum.h>
+#include "../../kexec.h"
+#include "kexec-ppc.h"
+#include <arch/options.h>
+
+static int debug = 0;
+
+/*
+ * I've found out there DOLs with unaligned and/or overlapping sections.
+ * I assume that sizes of sections can be wrong on these DOLs so I trust
+ * better start of sections.
+ * In order to load DOLs, I first extend sections to page aligned boundaries
+ * and then merge overlapping sections starting from lower addresses.
+ * -- Albert Herranz
+ */
+
+/* DOL related stuff */
+
+#define DOL_HEADER_SIZE 0x100
+
+#define DOL_SECT_MAX_TEXT 7 /* text sections */
+#define DOL_SECT_MAX_DATA 11 /* data sections */
+#define DOL_MAX_SECT (DOL_SECT_MAX_TEXT+DOL_SECT_MAX_DATA)
+
+/* this is the DOL executable header */
+typedef struct {
+ uint32_t offset_text[DOL_SECT_MAX_TEXT]; /* in the file */
+ uint32_t offset_data[DOL_SECT_MAX_DATA];
+ uint32_t address_text[DOL_SECT_MAX_TEXT]; /* in memory */
+ uint32_t address_data[DOL_SECT_MAX_DATA];
+ uint32_t size_text[DOL_SECT_MAX_TEXT];
+ uint32_t size_data[DOL_SECT_MAX_DATA];
+ uint32_t address_bss;
+ uint32_t size_bss;
+ uint32_t entry_point;
+} dol_header;
+
+#define dol_sect_offset(hptr, index) \
+ ((index >= DOL_SECT_MAX_TEXT)? \
+ hptr->offset_data[index - DOL_SECT_MAX_TEXT] \
+ :hptr->offset_text[index])
+#define dol_sect_address(hptr, index) \
+ ((index >= DOL_SECT_MAX_TEXT)? \
+ hptr->address_data[index - DOL_SECT_MAX_TEXT] \
+ :hptr->address_text[index])
+#define dol_sect_size(hptr, index) \
+ ((index >= DOL_SECT_MAX_TEXT)? \
+ hptr->size_data[index - DOL_SECT_MAX_TEXT] \
+ :hptr->size_text[index])
+#define dol_sect_type(index) \
+ ((index >= DOL_SECT_MAX_TEXT) ? "data" : "text")
+
+typedef struct {
+ uint32_t sects_bitmap;
+ uint32_t start;
+ uint32_t size;
+} dol_segment;
+
+#define dol_seg_end(s1) \
+ (s1->start + s1->size)
+#define dol_seg_after_sect(s1, s2) \
+ (s1->start >= dol_seg_end(s2))
+#define dol_seg_overlaps(s1, s2) \
+ (!(dol_seg_after_sect(s1,s2) || dol_seg_after_sect(s2,s1)))
+
+/* same as in asm/page.h */
+#define PAGE_SHIFT 12
+#define PAGE_SIZE (1UL << PAGE_SHIFT)
+#define PAGE_MASK (~((1 << PAGE_SHIFT) - 1))
+#define PAGE_ALIGN(addr) _ALIGN(addr, PAGE_SIZE)
+
+#define MAX_COMMAND_LINE 256
+
+#define UPSZ(X) _ALIGN_UP(sizeof(X), 4)
+static struct boot_notes {
+ Elf_Bhdr hdr;
+ Elf_Nhdr bl_hdr;
+ unsigned char bl_desc[UPSZ(BOOTLOADER)];
+ Elf_Nhdr blv_hdr;
+ unsigned char blv_desc[UPSZ(BOOTLOADER_VERSION)];
+ Elf_Nhdr cmd_hdr;
+ unsigned char command_line[0];
+} elf_boot_notes = {
+ .hdr = {
+ .b_signature = 0x0E1FB007,
+ .b_size = sizeof(elf_boot_notes),
+ .b_checksum = 0,
+ .b_records = 3,
+ },
+ .bl_hdr = {
+ .n_namesz = 0,
+ .n_descsz = sizeof(BOOTLOADER),
+ .n_type = EBN_BOOTLOADER_NAME,
+ },
+ .bl_desc = BOOTLOADER,
+ .blv_hdr = {
+ .n_namesz = 0,
+ .n_descsz = sizeof(BOOTLOADER_VERSION),
+ .n_type = EBN_BOOTLOADER_VERSION,
+ },
+ .blv_desc = BOOTLOADER_VERSION,
+ .cmd_hdr = {
+ .n_namesz = 0,
+ .n_descsz = 0,
+ .n_type = EBN_COMMAND_LINE,
+ },
+};
+
+void print_sects_bitmap(dol_segment * seg)
+{
+ int i, first_seen;
+
+ printf("\t" "sects_bitmap");
+ first_seen = 0;
+ for (i = 0; i < DOL_MAX_SECT; i++) {
+ if ((seg->sects_bitmap & (1 << i)) == 0)
+ continue;
+ printf("%c%d", (first_seen ? ',' : '='), i);
+ first_seen = 1;
+ }
+ printf("\n");
+}
+
+void print_dol_segment(dol_segment * seg)
+{
+ printf("dol segment:\n");
+ printf("\t" "start=%08lx, size=%ld (%08lx)\n",
+ (unsigned long)seg->start, (unsigned long)seg->size,
+ (unsigned long)seg->size);
+ printf("\t" "end=%08lx\n", (unsigned long)dol_seg_end(seg));
+ print_sects_bitmap(seg);
+}
+
+int load_dol_segments(dol_segment * seg, int max_segs, dol_header * h)
+{
+ int i, n, remaining;
+ unsigned int start, size;
+ unsigned long adj1, adj2, end1;
+
+ n = 0;
+ remaining = max_segs;
+ for (i = 0; i < DOL_MAX_SECT && remaining > 0; i++) {
+ /* zero here means the section is not in use */
+ if (dol_sect_size(h, i) == 0)
+ continue;
+
+ /* we initially map 1 seg to 1 sect */
+ seg->sects_bitmap = (1 << i);
+
+ start = dol_sect_address(h, i);
+ size = dol_sect_size(h, i);
+
+ /* page align the segment */
+ seg->start = start & PAGE_MASK;
+ end1 = start + size;
+ adj1 = start - seg->start;
+ adj2 = PAGE_ALIGN(end1) - end1;
+ seg->size = adj1 + size + adj2;
+
+ //print_dol_segment(seg);
+
+ seg++;
+ remaining--;
+ n++;
+ }
+ return n;
+}
+
+void fix_dol_segments_overlaps(dol_segment * seg, int max_segs)
+{
+ int i, j;
+ dol_segment *p, *pp;
+ long extra_length;
+
+ /* look for overlapping segments and fix them */
+ for (i = 0; i < max_segs; i++) {
+ p = seg + i; /* segment p */
+
+ /* not really a segment */
+ if (p->size == 0)
+ continue;
+
+ /* check if overlaps any previous segments */
+ for (j = 0; j < i; j++) {
+ pp = seg + j; /* segment pp */
+
+ /* not a segment or no overlap */
+ if (pp->size == 0 || !dol_seg_overlaps(p, pp))
+ continue;
+
+ /* merge the two segments */
+ if (pp->start < p->start) {
+ /* extend pp to include p and delete p */
+ extra_length = dol_seg_end(p) - dol_seg_end(pp);
+ if (extra_length > 0) {
+ pp->size += extra_length;
+ }
+ pp->sects_bitmap |= p->sects_bitmap;
+ p->size = p->start = p->sects_bitmap = 0;
+
+ /* restart the loop because p was deleted */
+ i = 0;
+ break;
+ } else {
+ /* extend p to include pp and delete pp */
+ extra_length = dol_seg_end(pp) - dol_seg_end(p);
+ if (extra_length > 0) {
+ p->size += extra_length;
+ }
+ p->sects_bitmap |= pp->sects_bitmap;
+ pp->size = pp->start = pp->sects_bitmap = 0;
+ }
+ }
+ }
+}
+
+int dol_ppc_probe(const char *buf, off_t dol_length)
+{
+ dol_header header, *h;
+ int i, valid = 0;
+
+ /* the DOL file should be at least as long as the DOL header */
+ if (dol_length < DOL_HEADER_SIZE) {
+ if (debug) {
+ fprintf(stderr, "Not a DOL file, too short.\n");
+ }
+ return -1;
+ }
+
+ /* read the DOL header */
+ memcpy(&header, buf, sizeof(header));
+ h = &header;
+
+ /* now perform some sanity checks */
+ for (i = 0; i < DOL_MAX_SECT; i++) {
+ /* DOL segment MAY NOT be physically stored in the header */
+ if ((dol_sect_offset(h, i) != 0)
+ && (dol_sect_offset(h, i) < DOL_HEADER_SIZE)) {
+ if (debug) {
+ fprintf(stderr,
+ "%s segment offset within DOL header\n",
+ dol_sect_type(i));
+ }
+ return -1;
+ }
+
+ /* end of physical storage must be within file */
+ if ((uintmax_t)(dol_sect_offset(h, i) + dol_sect_size(h, i)) >
+ (uintmax_t)dol_length) {
+ if (debug) {
+ fprintf(stderr,
+ "%s segment past DOL file size\n",
+ dol_sect_type(i));
+ }
+ return -1;
+ }
+
+ /* we only should accept DOLs with segments above 2GB */
+ if (dol_sect_address(h, i) != 0
+ && !(dol_sect_address(h, i) & 0x80000000)) {
+ fprintf(stderr, "warning, %s segment below 2GB\n",
+ dol_sect_type(i));
+ }
+
+ if (i < DOL_SECT_MAX_TEXT) {
+ /* remember that entrypoint was in a code segment */
+ if (h->entry_point >= dol_sect_address(h, i)
+ && h->entry_point < dol_sect_address(h, i) +
+ dol_sect_size(h, i))
+ valid = 1;
+ }
+ }
+
+ /* if there is a BSS segment it must^H^H^H^Hshould be above 2GB, too */
+ if (h->address_bss != 0 && !(h->address_bss & 0x80000000)) {
+ fprintf(stderr, "warning, BSS segment below 2GB\n");
+ }
+
+ /* if entrypoint is not within a code segment reject this file */
+ if (!valid) {
+ if (debug) {
+ fprintf(stderr, "Entry point out of text segment\n");
+ }
+ return -1;
+ }
+
+ /* I've got a dol */
+ return 0;
+}
+
+void dol_ppc_usage(void)
+{
+ printf
+ (" --command-line=STRING Set the kernel command line to STRING.\n"
+ " --append=STRING Set the kernel command line to STRING.\n");
+
+}
+
+int dol_ppc_load(int argc, char **argv, const char *buf, off_t UNUSED(len),
+ struct kexec_info *info)
+{
+ dol_header header, *h;
+ unsigned long entry;
+ char *arg_buf;
+ size_t arg_bytes;
+ unsigned long arg_base;
+ struct boot_notes *notes;
+ size_t note_bytes;
+ const char *command_line;
+ int command_line_len;
+ unsigned long mstart;
+ dol_segment dol_segs[DOL_MAX_SECT];
+ unsigned int sects_bitmap;
+ unsigned long lowest_start;
+ int i, j, k;
+ int opt;
+
+ /* See options.h -- add any more there, too. */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ {"command-line", 1, 0, OPT_APPEND},
+ {"append", 1, 0, OPT_APPEND},
+ {0, 0, 0, 0},
+ };
+ static const char short_options[] = KEXEC_ARCH_OPT_STR;
+
+ /*
+ * Parse the command line arguments
+ */
+ command_line = 0;
+ while ((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch (opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX) {
+ break;
+ }
+ case OPT_APPEND:
+ command_line = optarg;
+ break;
+ }
+ }
+ command_line_len = 0;
+ if (command_line) {
+ command_line_len = strlen(command_line) + 1;
+ }
+
+ /* read the DOL header */
+ memcpy(&header, buf, sizeof(header));
+ h = &header;
+
+ /* set entry point */
+ entry = h->entry_point;
+
+ /* convert the DOL sections into suitable page aligned segments */
+ memset(dol_segs, 0, sizeof(dol_segs));
+
+ load_dol_segments(dol_segs, DOL_MAX_SECT, h);
+ fix_dol_segments_overlaps(dol_segs, DOL_MAX_SECT);
+
+ /* load rest of segments */
+ for (i = 0; i < DOL_MAX_SECT; i++) {
+ unsigned char *seg_buf;
+ /* not a segment */
+ if (dol_segs[i].size == 0)
+ continue;
+
+ //print_dol_segment(&dol_segs[i]);
+
+ /* prepare segment */
+ seg_buf = xmalloc(dol_segs[i].size);
+ mstart = dol_segs[i].start;
+ if (mstart & 0xf0000000) {
+ /*
+ * GameCube DOLs expect memory mapped this way:
+ *
+ * 80000000 - 817fffff 24MB RAM, cached
+ * c0000000 - c17fffff 24MB RAM, not cached
+ *
+ * kexec, instead, needs physical memory layout, so
+ * we clear the upper bits of the address.
+ * (2 bits should be enough, indeed)
+ */
+ mstart &= ~0xf0000000; /* clear bits 0-3, ibm syntax */
+ }
+ add_segment(info,
+ seg_buf, dol_segs[i].size,
+ mstart, dol_segs[i].size);
+
+
+ /* load sections into segment memory, according to bitmap */
+ sects_bitmap = 0;
+ while (sects_bitmap != dol_segs[i].sects_bitmap) {
+ unsigned char *sec_buf;
+ /* find lowest start address for section */
+ lowest_start = 0xffffffff;
+ for (j = -1, k = 0; k < DOL_MAX_SECT; k++) {
+ /* continue if section is already done */
+ if ((sects_bitmap & (1 << k)) != 0)
+ continue;
+ /* do nothing for non sections */
+ if ((dol_segs[i].sects_bitmap & (1 << k)) == 0)
+ continue;
+ /* found new candidate */
+ if (dol_sect_address(h, k) < lowest_start) {
+ lowest_start = dol_sect_address(h, k);
+ j = k;
+ }
+ }
+ /* mark section as being loaded */
+ sects_bitmap |= (1 << j);
+
+ /* read it from file to the right place */
+ sec_buf = seg_buf +
+ (dol_sect_address(h, j) - dol_segs[i].start);
+ memcpy(sec_buf, buf + dol_sect_offset(h, j),
+ dol_sect_size(h, j));
+ }
+ }
+
+ /* build the setup glue and argument segment (segment 0) */
+ note_bytes = sizeof(elf_boot_notes) + _ALIGN(command_line_len, 4);
+ arg_bytes = note_bytes + _ALIGN(setup_dol_size, 4);
+
+ arg_buf = xmalloc(arg_bytes);
+ arg_base = add_buffer(info,
+ arg_buf, arg_bytes, arg_bytes, 4, 0, 0xFFFFFFFFUL, 1);
+
+ notes = (struct boot_notes *)(arg_buf + _ALIGN(setup_dol_size, 4));
+
+ notes->hdr.b_size = note_bytes;
+ notes->cmd_hdr.n_descsz = command_line_len;
+ notes->hdr.b_checksum = compute_ip_checksum(notes, note_bytes);
+
+ setup_dol_regs.spr8 = entry; /* Link Register */
+
+ memcpy(arg_buf, setup_dol_start, setup_dol_size);
+ memcpy(notes, &elf_boot_notes, sizeof(elf_boot_notes));
+ memcpy(notes->command_line, command_line, command_line_len);
+
+ if (debug) {
+ fprintf(stdout, "entry = %p\n", (void *)arg_base);
+ print_segments(stdout, info);
+ }
+
+ info->entry = (void *)arg_base;
+ return 0;
+}
diff --git a/kexec/arch/ppc/kexec-elf-ppc.c b/kexec/arch/ppc/kexec-elf-ppc.c
new file mode 100644
index 0000000..4a4886e
--- /dev/null
+++ b/kexec/arch/ppc/kexec-elf-ppc.c
@@ -0,0 +1,458 @@
+/*
+ * kexec-elf-ppc.c - kexec Elf loader for the PowerPC
+ * Copyright (C) 2004 Albert Herranz
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <elf.h>
+#include <boot/elf_boot.h>
+#include <ip_checksum.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "kexec-ppc.h"
+#include <arch/options.h>
+#include "../../kexec-syscall.h"
+#include "crashdump-powerpc.h"
+
+#include "config.h"
+#include "fixup_dtb.h"
+
+static const int probe_debug = 0;
+
+unsigned char reuse_initrd;
+int create_flatten_tree(struct kexec_info *, unsigned char **, unsigned long *,
+ char *);
+
+#define UPSZ(X) _ALIGN_UP(sizeof(X), 4);
+#ifdef WITH_GAMECUBE
+static struct boot_notes {
+ Elf_Bhdr hdr;
+ Elf_Nhdr bl_hdr;
+ unsigned char bl_desc[UPSZ(BOOTLOADER)];
+ Elf_Nhdr blv_hdr;
+ unsigned char blv_desc[UPSZ(BOOTLOADER_VERSION)];
+ Elf_Nhdr cmd_hdr;
+ unsigned char command_line[0];
+} elf_boot_notes = {
+ .hdr = {
+ .b_signature = 0x0E1FB007,
+ .b_size = sizeof(elf_boot_notes),
+ .b_checksum = 0,
+ .b_records = 3,
+ },
+ .bl_hdr = {
+ .n_namesz = 0,
+ .n_descsz = sizeof(BOOTLOADER),
+ .n_type = EBN_BOOTLOADER_NAME,
+ },
+ .bl_desc = BOOTLOADER,
+ .blv_hdr = {
+ .n_namesz = 0,
+ .n_descsz = sizeof(BOOTLOADER_VERSION),
+ .n_type = EBN_BOOTLOADER_VERSION,
+ },
+ .blv_desc = BOOTLOADER_VERSION,
+ .cmd_hdr = {
+ .n_namesz = 0,
+ .n_descsz = 0,
+ .n_type = EBN_COMMAND_LINE,
+ },
+};
+#endif
+
+int elf_ppc_probe(const char *buf, off_t len)
+{
+
+ struct mem_ehdr ehdr;
+ int result;
+ result = build_elf_exec_info(buf, len, &ehdr, 0);
+ if (result < 0) {
+ goto out;
+ }
+
+ /* Verify the architecuture specific bits */
+ if (ehdr.e_machine != EM_PPC) {
+ /* for a different architecture */
+ if (probe_debug) {
+ fprintf(stderr, "Not for this architecture.\n");
+ }
+ result = -1;
+ goto out;
+ }
+ result = 0;
+ out:
+ free_elf_info(&ehdr);
+ return result;
+}
+
+#ifdef WITH_GAMECUBE
+static void gamecube_hack_addresses(struct mem_ehdr *ehdr)
+{
+ struct mem_phdr *phdr, *phdr_end;
+ phdr_end = ehdr->e_phdr + ehdr->e_phnum;
+ for(phdr = ehdr->e_phdr; phdr != phdr_end; phdr++) {
+ /*
+ * GameCube ELF kernel is linked with memory mapped
+ * this way (to easily transform it into a DOL
+ * suitable for being loaded with psoload):
+ *
+ * 80000000 - 817fffff 24MB RAM, cached
+ * c0000000 - c17fffff 24MB RAM, not cached
+ *
+ * kexec, instead, needs physical memory layout, so
+ * we clear the upper bits of the address.
+ * (2 bits should be enough, indeed)
+ */
+ phdr->p_paddr &= ~0xf0000000; /* clear bits 0-3, ibm syntax */
+ }
+}
+#endif
+
+/* See options.h -- add any more there, too. */
+static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ {"command-line", 1, 0, OPT_APPEND},
+ {"append", 1, 0, OPT_APPEND},
+ {"ramdisk", 1, 0, OPT_RAMDISK},
+ {"initrd", 1, 0, OPT_RAMDISK},
+ {"gamecube", 1, 0, OPT_GAMECUBE},
+ {"dtb", 1, 0, OPT_DTB},
+ {"reuse-node", 1, 0, OPT_NODES},
+ {0, 0, 0, 0},
+};
+static const char short_options[] = KEXEC_ARCH_OPT_STR;
+
+void elf_ppc_usage(void)
+{
+ printf(
+ " --command-line=STRING Set the kernel command line to STRING.\n"
+ " --append=STRING Set the kernel command line to STRING.\n"
+ " --ramdisk=<filename> Initial RAM disk.\n"
+ " --initrd=<filename> same as --ramdisk\n"
+ " --gamecube=1|0 Enable/disable support for ELFs with changed\n"
+ " addresses suitable for the GameCube.\n"
+ " --dtb=<filename> Specify device tree blob file.\n"
+ " --reuse-node=node Specify nodes which should be taken from /proc/device-tree.\n"
+ " Can be set multiple times.\n"
+ );
+}
+
+int elf_ppc_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ struct mem_ehdr ehdr;
+ char *command_line, *crash_cmdline, *cmdline_buf;
+ char *tmp_cmdline;
+ int command_line_len, crash_cmdline_len;
+ char *dtb;
+ int result;
+ char *error_msg;
+ unsigned long max_addr, hole_addr;
+ struct mem_phdr *phdr;
+ size_t size;
+#ifdef CONFIG_PPC64
+ unsigned long toc_addr;
+#endif
+#ifdef WITH_GAMECUBE
+ int target_is_gamecube = 1;
+ char *arg_buf;
+ size_t arg_bytes;
+ unsigned long arg_base;
+ struct boot_notes *notes;
+ size_t note_bytes;
+ unsigned char *setup_start;
+ uint32_t setup_size;
+#else
+ char *seg_buf = NULL;
+ off_t seg_size = 0;
+ int target_is_gamecube = 0;
+ unsigned int addr;
+ unsigned long dtb_addr;
+ unsigned long dtb_addr_actual;
+#endif
+ unsigned long kernel_addr;
+#define FIXUP_ENTRYS (20)
+ char *fixup_nodes[FIXUP_ENTRYS + 1];
+ int cur_fixup = 0;
+ int opt;
+ char *blob_buf = NULL;
+ off_t blob_size = 0;
+
+ command_line = tmp_cmdline = NULL;
+ dtb = NULL;
+ max_addr = LONG_MAX;
+ hole_addr = 0;
+ kernel_addr = 0;
+ ramdisk = 0;
+ result = 0;
+ error_msg = NULL;
+
+ while ((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch (opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX) {
+ break;
+ }
+ case OPT_APPEND:
+ tmp_cmdline = optarg;
+ break;
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+ case OPT_GAMECUBE:
+ target_is_gamecube = atoi(optarg);
+ break;
+
+ case OPT_DTB:
+ dtb = optarg;
+ break;
+
+ case OPT_NODES:
+ if (cur_fixup >= FIXUP_ENTRYS) {
+ die("The number of entries for the fixup is too large\n");
+ }
+ fixup_nodes[cur_fixup] = optarg;
+ cur_fixup++;
+ break;
+ }
+ }
+
+ if (ramdisk && reuse_initrd)
+ die("Can't specify --ramdisk or --initrd with --reuseinitrd\n");
+
+ command_line_len = 0;
+ if (tmp_cmdline) {
+ command_line = tmp_cmdline;
+ } else {
+ command_line = get_command_line();
+ }
+ command_line_len = strlen(command_line);
+
+ fixup_nodes[cur_fixup] = NULL;
+
+ /* Parse the Elf file */
+ result = build_elf_exec_info(buf, len, &ehdr, 0);
+ if (result < 0) {
+ goto out;
+ }
+
+#ifdef WITH_GAMECUBE
+ if (target_is_gamecube) {
+ gamecube_hack_addresses(&ehdr);
+ }
+#endif
+
+ /* Load the Elf data. Physical load addresses in elf64 header do not
+ * show up correctly. Use user supplied address for now to patch the
+ * elf header
+ */
+
+ phdr = &ehdr.e_phdr[0];
+ size = phdr->p_filesz;
+ if (size > phdr->p_memsz)
+ size = phdr->p_memsz;
+
+ kernel_addr = locate_hole(info, size, 0, 0, max_addr, 1);
+#ifdef CONFIG_PPC64
+ ehdr.e_phdr[0].p_paddr = (Elf64_Addr)kernel_addr;
+#else
+ ehdr.e_phdr[0].p_paddr = kernel_addr;
+#endif
+
+ /* Load the Elf data */
+ result = elf_exec_load(&ehdr, info);
+ if (result < 0) {
+ goto out;
+ }
+
+ /*
+ * Need to append some command line parameters internally in case of
+ * taking crash dumps. Additional segments need to be created.
+ */
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ crash_cmdline = xmalloc(COMMAND_LINE_SIZE);
+ memset((void *)crash_cmdline, 0, COMMAND_LINE_SIZE);
+ result = load_crashdump_segments(info, crash_cmdline,
+ max_addr, 0);
+ if (result < 0) {
+ result = -1;
+ goto out;
+ }
+ crash_cmdline_len = strlen(crash_cmdline);
+ } else {
+ crash_cmdline = NULL;
+ crash_cmdline_len = 0;
+ }
+
+ /*
+ * In case of a toy we take the hardcoded things and an easy setup via
+ * one of the assembly startups. Every thing else should be grown up
+ * and go through the purgatory.
+ */
+#ifdef WITH_GAMECUBE
+ if (target_is_gamecube) {
+ setup_start = setup_dol_start;
+ setup_size = setup_dol_size;
+ setup_dol_regs.spr8 = ehdr.e_entry; /* Link Register */
+ } else {
+ setup_start = setup_simple_start;
+ setup_size = setup_simple_size;
+ setup_simple_regs.spr8 = ehdr.e_entry; /* Link Register */
+ }
+ note_bytes = sizeof(elf_boot_notes) + _ALIGN(command_line_len, 4);
+ arg_bytes = note_bytes + _ALIGN(setup_size, 4);
+
+ arg_buf = xmalloc(arg_bytes);
+ arg_base = add_buffer(info,
+ arg_buf, arg_bytes, arg_bytes, 4, 0, elf_max_addr(&ehdr), 1);
+
+ notes = (struct boot_notes *)(arg_buf + _ALIGN(setup_size, 4));
+
+ memcpy(arg_buf, setup_start, setup_size);
+ memcpy(notes, &elf_boot_notes, sizeof(elf_boot_notes));
+ memcpy(notes->command_line, command_line, command_line_len);
+ notes->hdr.b_size = note_bytes;
+ notes->cmd_hdr.n_descsz = command_line_len;
+ notes->hdr.b_checksum = compute_ip_checksum(notes, note_bytes);
+
+ info->entry = (void *)arg_base;
+#else
+ if (crash_cmdline_len + command_line_len + 1 > COMMAND_LINE_SIZE) {
+ printf("Kernel command line exceeds size\n");
+ return -1;
+ }
+
+ cmdline_buf = xmalloc(COMMAND_LINE_SIZE);
+ memset((void *)cmdline_buf, 0, COMMAND_LINE_SIZE);
+ if (command_line)
+ strncat(cmdline_buf, command_line, command_line_len);
+ if (crash_cmdline)
+ strncat(cmdline_buf, crash_cmdline,
+ sizeof(crash_cmdline) -
+ strlen(crash_cmdline) - 1);
+
+ elf_rel_build_load(info, &info->rhdr, (const char *)purgatory,
+ purgatory_size, 0, elf_max_addr(&ehdr), 1, 0);
+
+ /* Here we need to initialize the device tree, and find out where
+ * it is going to live so we can place it directly after the
+ * kernel image */
+ if (dtb) {
+ /* Grab device tree from buffer */
+ blob_buf = slurp_file(dtb, &blob_size);
+ } else {
+ create_flatten_tree(info, (unsigned char **)&blob_buf,
+ (unsigned long *)&blob_size, cmdline_buf);
+ }
+ if (!blob_buf || !blob_size) {
+ error_msg = "Device tree seems to be an empty file.\n";
+ goto out2;
+ }
+
+ /* initial fixup for device tree */
+ blob_buf = fixup_dtb_init(info, blob_buf, &blob_size, kernel_addr, &dtb_addr);
+
+ if (ramdisk) {
+ seg_buf = slurp_ramdisk_ppc(ramdisk, &seg_size);
+ /* load the ramdisk *above* the device tree */
+ hole_addr = add_buffer(info, seg_buf, seg_size, seg_size,
+ 0, dtb_addr + blob_size + 1, max_addr, -1);
+ ramdisk_base = hole_addr;
+ ramdisk_size = seg_size;
+ }
+ if (reuse_initrd) {
+ ramdisk_base = initrd_base;
+ ramdisk_size = initrd_size;
+ }
+
+ if (info->kexec_flags & KEXEC_ON_CRASH && ramdisk_base != 0) {
+ if ( (ramdisk_base < crash_base) ||
+ (ramdisk_base > crash_base + crash_size) ) {
+ printf("WARNING: ramdisk is above crashkernel region!\n");
+ }
+ else if (ramdisk_base + ramdisk_size > crash_base + crash_size) {
+ printf("WARNING: ramdisk overflows crashkernel region!\n");
+ }
+ }
+
+ /* Perform final fixup on devie tree, i.e. everything beside what
+ * was done above */
+ fixup_dtb_finalize(info, blob_buf, &blob_size, fixup_nodes,
+ cmdline_buf);
+ dtb_addr_actual = add_buffer(info, blob_buf, blob_size, blob_size, 0, dtb_addr,
+ kernel_addr + KERNEL_ACCESS_TOP, 1);
+ if (dtb_addr_actual != dtb_addr) {
+ error_msg = "Error device tree not loadded to address it was expecting to be loaded too!\n";
+ goto out2;
+ }
+
+ /*
+ * set various variables for the purgatory.
+ * ehdr.e_entry is a virtual address. we know physical start
+ * address of the kernel (kernel_addr). Find the offset of
+ * e_entry from the virtual start address(e_phdr[0].p_vaddr)
+ * and calculate the actual physical address of the 'kernel entry'.
+ */
+ addr = kernel_addr + (ehdr.e_entry - ehdr.e_phdr[0].p_vaddr);
+ elf_rel_set_symbol(&info->rhdr, "kernel", &addr, sizeof(addr));
+
+ addr = dtb_addr;
+ elf_rel_set_symbol(&info->rhdr, "dt_offset",
+ &addr, sizeof(addr));
+
+#define PUL_STACK_SIZE (16 * 1024)
+ addr = locate_hole(info, PUL_STACK_SIZE, 0, 0,
+ elf_max_addr(&ehdr), 1);
+ addr += PUL_STACK_SIZE;
+ elf_rel_set_symbol(&info->rhdr, "stack", &addr, sizeof(addr));
+#undef PUL_STACK_SIZE
+
+ /*
+ * Fixup ThreadPointer(r2) for purgatory.
+ * PPC32 ELF ABI expects :
+ * ThreadPointer (TP) = TCB + 0x7000
+ * We manually allocate a TCB space and set the TP
+ * accordingly.
+ */
+#define TCB_SIZE 1024
+#define TCB_TP_OFFSET 0x7000 /* PPC32 ELF ABI */
+
+ addr = locate_hole(info, TCB_SIZE, 0, 0,
+ ((unsigned long)elf_max_addr(&ehdr) - TCB_TP_OFFSET),
+ 1);
+ addr += TCB_SIZE + TCB_TP_OFFSET;
+ elf_rel_set_symbol(&info->rhdr, "my_thread_ptr", &addr, sizeof(addr));
+
+#undef TCB_SIZE
+#undef TCB_TP_OFFSET
+
+ addr = elf_rel_get_addr(&info->rhdr, "purgatory_start");
+ info->entry = (void *)addr;
+
+out2:
+ free(cmdline_buf);
+#endif
+out:
+ free_elf_info(&ehdr);
+ free(crash_cmdline);
+ if (!tmp_cmdline)
+ free(command_line);
+ if (error_msg)
+ die("%s", error_msg);
+
+ return result;
+}
diff --git a/kexec/arch/ppc/kexec-elf-rel-ppc.c b/kexec/arch/ppc/kexec-elf-rel-ppc.c
new file mode 100644
index 0000000..1acbd86
--- /dev/null
+++ b/kexec/arch/ppc/kexec-elf-rel-ppc.c
@@ -0,0 +1,69 @@
+#include <stdio.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+
+int machine_verify_elf_rel(struct mem_ehdr *ehdr)
+{
+ if (ehdr->ei_data != ELFDATA2MSB) {
+ return 0;
+ }
+ if (ehdr->ei_class != ELFCLASS32) {
+ return 0;
+ }
+ if (ehdr->e_machine != EM_PPC) {
+ return 0;
+ }
+ return 1;
+}
+
+void machine_apply_elf_rel(struct mem_ehdr *UNUSED(ehdr),
+ struct mem_sym *UNUSED(sym), unsigned long r_type, void *location,
+ unsigned long address, unsigned long value)
+{
+ switch(r_type) {
+ case R_PPC_ADDR32:
+ /* Simply set it */
+ *(uint32_t *)location = value;
+ break;
+
+ case R_PPC_ADDR16_LO:
+ /* Low half of the symbol */
+ *(uint16_t *)location = value;
+ break;
+
+ case R_PPC_ADDR16_HI:
+ *(uint16_t *)location = (value>>16) & 0xffff;
+ break;
+
+ case R_PPC_ADDR16_HA:
+ /* Sign-adjusted lower 16 bits: PPC ELF ABI says:
+ (((x >> 16) + ((x & 0x8000) ? 1 : 0))) & 0xFFFF.
+ This is the same, only sane.
+ */
+ *(uint16_t *)location = (value + 0x8000) >> 16;
+ break;
+
+ case R_PPC_REL24:
+ if ((int)(value - address) < -0x02000000
+ || (int)(value - address) >= 0x02000000)
+ {
+ die("Symbol more than 16MiB away");
+ }
+ /* Only replace bits 2 through 26 */
+ *(uint32_t *)location
+ = (*(uint32_t *)location & ~0x03fffffc)
+ | ((value - address)
+ & 0x03fffffc);
+ break;
+
+ case R_PPC_REL32:
+ /* 32-bit relative jump. */
+ *(uint32_t *)location = value - address;
+ break;
+ default:
+ die("Unknown rela relocation: %lu\n", r_type);
+ break;
+ }
+ return;
+}
diff --git a/kexec/arch/ppc/kexec-ppc.c b/kexec/arch/ppc/kexec-ppc.c
new file mode 100644
index 0000000..03bec36
--- /dev/null
+++ b/kexec/arch/ppc/kexec-ppc.c
@@ -0,0 +1,968 @@
+/*
+ * kexec-ppc.c - kexec for the PowerPC
+ * Copyright (C) 2004, 2005 Albert Herranz
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+#include <stddef.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <getopt.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "kexec-ppc.h"
+#include "crashdump-powerpc.h"
+#include <arch/options.h>
+
+#include "config.h"
+
+unsigned long dt_address_cells = 0, dt_size_cells = 0;
+uint64_t rmo_top;
+uint64_t memory_limit;
+unsigned long long crash_base = 0, crash_size = 0;
+unsigned long long initrd_base = 0, initrd_size = 0;
+unsigned long long ramdisk_base = 0, ramdisk_size = 0;
+unsigned int rtas_base, rtas_size;
+int max_memory_ranges;
+const char *ramdisk;
+
+/*
+ * Reads the #address-cells and #size-cells on this platform.
+ * This is used to parse the memory/reg info from the device-tree
+ */
+int init_memory_region_info()
+{
+ size_t res = 0;
+ int fd;
+ char *file;
+
+ file = "/proc/device-tree/#address-cells";
+ fd = open(file, O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr, "Unable to open %s\n", file);
+ return -1;
+ }
+
+ res = read(fd, &dt_address_cells, sizeof(dt_address_cells));
+ if (res != sizeof(dt_address_cells)) {
+ fprintf(stderr, "Error reading %s\n", file);
+ return -1;
+ }
+ close(fd);
+
+ file = "/proc/device-tree/#size-cells";
+ fd = open(file, O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr, "Unable to open %s\n", file);
+ return -1;
+ }
+
+ res = read(fd, &dt_size_cells, sizeof(dt_size_cells));
+ if (res != sizeof(dt_size_cells)) {
+ fprintf(stderr, "Error reading %s\n", file);
+ return -1;
+ }
+ close(fd);
+
+ /* Convert the sizes into bytes */
+ dt_size_cells *= sizeof(unsigned long);
+ dt_address_cells *= sizeof(unsigned long);
+
+ return 0;
+}
+
+#define MAXBYTES 128
+/*
+ * Reads the memory region info from the device-tree node pointed
+ * by @fd and fills the *start, *end with the boundaries of the region
+ */
+int read_memory_region_limits(int fd, unsigned long long *start,
+ unsigned long long *end)
+{
+ char buf[MAXBYTES];
+ unsigned long *p;
+ unsigned long nbytes = dt_address_cells + dt_size_cells;
+
+ if (lseek(fd, 0, SEEK_SET) == -1) {
+ fprintf(stderr, "Error in file seek\n");
+ return -1;
+ }
+ if (read(fd, buf, nbytes) != nbytes) {
+ fprintf(stderr, "Error reading the memory region info\n");
+ return -1;
+ }
+
+ p = (unsigned long*)buf;
+ if (dt_address_cells == sizeof(unsigned long)) {
+ *start = p[0];
+ p++;
+ } else if (dt_address_cells == sizeof(unsigned long long)) {
+ *start = ((unsigned long long *)p)[0];
+ p = (unsigned long long *)p + 1;
+ } else {
+ fprintf(stderr, "Unsupported value for #address-cells : %ld\n",
+ dt_address_cells);
+ return -1;
+ }
+
+ if (dt_size_cells == sizeof(unsigned long))
+ *end = *start + p[0];
+ else if (dt_size_cells == sizeof(unsigned long long))
+ *end = *start + ((unsigned long long *)p)[0];
+ else {
+ fprintf(stderr, "Unsupported value for #size-cells : %ld\n",
+ dt_size_cells);
+ return -1;
+ }
+
+ return 0;
+}
+
+void arch_reuse_initrd(void)
+{
+ reuse_initrd = 1;
+}
+
+#ifdef WITH_GAMECUBE
+#define MAX_MEMORY_RANGES 64
+static struct memory_range memory_range[MAX_MEMORY_RANGES];
+
+static int get_memory_ranges_gc(struct memory_range **range, int *ranges,
+ unsigned long UNUSED(kexec_flags))
+{
+ int memory_ranges = 0;
+
+ /* RAM - lowmem used by DOLs - framebuffer */
+ memory_range[memory_ranges].start = 0x00003000;
+ memory_range[memory_ranges].end = 0x0174bfff;
+ memory_range[memory_ranges].type = RANGE_RAM;
+ memory_ranges++;
+ *range = memory_range;
+ *ranges = memory_ranges;
+ return 0;
+}
+#else
+static int use_new_dtb;
+static int nr_memory_ranges, nr_exclude_ranges;
+static struct memory_range *exclude_range;
+static struct memory_range *memory_range;
+static struct memory_range *base_memory_range;
+static uint64_t memory_max;
+
+/*
+ * Count the memory nodes under /proc/device-tree and populate the
+ * max_memory_ranges variable. This variable replaces MAX_MEMORY_RANGES
+ * macro used earlier.
+ */
+static int count_memory_ranges(void)
+{
+ char device_tree[256] = "/proc/device-tree/";
+ struct dirent *dentry;
+ DIR *dir;
+
+ if ((dir = opendir(device_tree)) == NULL) {
+ perror(device_tree);
+ return -1;
+ }
+
+ while ((dentry = readdir(dir)) != NULL) {
+ if (strncmp(dentry->d_name, "memory@", 7) &&
+ strcmp(dentry->d_name, "memory"))
+ continue;
+ max_memory_ranges++;
+ }
+
+ /* need to add extra region for retained initrd */
+ if (use_new_dtb) {
+ max_memory_ranges++;
+ }
+
+ closedir(dir);
+ return 0;
+
+}
+
+ static void cleanup_memory_ranges(void)
+ {
+ free(memory_range);
+ free(base_memory_range);
+ free(exclude_range);
+ }
+
+/*
+ * Allocate memory for various data structures used to hold
+ * values of different memory ranges
+ */
+static int alloc_memory_ranges(void)
+{
+ int memory_range_len;
+
+ memory_range_len = sizeof(struct memory_range) * max_memory_ranges;
+
+ memory_range = malloc(memory_range_len);
+ if (!memory_range)
+ return -1;
+
+ base_memory_range = malloc(memory_range_len);
+ if (!base_memory_range)
+ goto err1;
+
+ exclude_range = malloc(memory_range_len);
+ if (!exclude_range)
+ goto err1;
+
+ memset(memory_range, 0, memory_range_len);
+ memset(base_memory_range, 0, memory_range_len);
+ memset(exclude_range, 0, memory_range_len);
+ return 0;
+
+err1:
+ fprintf(stderr, "memory range structure allocation failure\n");
+ cleanup_memory_ranges();
+ return -1;
+}
+
+/* Sort the exclude ranges in memory */
+static int sort_ranges(void)
+{
+ int i, j;
+ uint64_t tstart, tend;
+ for (i = 0; i < nr_exclude_ranges - 1; i++) {
+ for (j = 0; j < nr_exclude_ranges - i - 1; j++) {
+ if (exclude_range[j].start > exclude_range[j+1].start) {
+ tstart = exclude_range[j].start;
+ tend = exclude_range[j].end;
+ exclude_range[j].start = exclude_range[j+1].start;
+ exclude_range[j].end = exclude_range[j+1].end;
+ exclude_range[j+1].start = tstart;
+ exclude_range[j+1].end = tend;
+ }
+ }
+ }
+ return 0;
+}
+
+/* Sort the base ranges in memory - this is useful for ensuring that our
+ * ranges are in ascending order, even if device-tree read of memory nodes
+ * is done differently. Also, could be used for other range coalescing later
+ */
+static int sort_base_ranges(void)
+{
+ int i, j;
+ unsigned long long tstart, tend;
+
+ for (i = 0; i < nr_memory_ranges - 1; i++) {
+ for (j = 0; j < nr_memory_ranges - i - 1; j++) {
+ if (base_memory_range[j].start > base_memory_range[j+1].start) {
+ tstart = base_memory_range[j].start;
+ tend = base_memory_range[j].end;
+ base_memory_range[j].start = base_memory_range[j+1].start;
+ base_memory_range[j].end = base_memory_range[j+1].end;
+ base_memory_range[j+1].start = tstart;
+ base_memory_range[j+1].end = tend;
+ }
+ }
+ }
+ return 0;
+}
+
+static int realloc_memory_ranges(void)
+{
+ size_t memory_range_len;
+
+ max_memory_ranges++;
+ memory_range_len = sizeof(struct memory_range) * max_memory_ranges;
+
+ memory_range = (struct memory_range *) realloc(memory_range,
+ memory_range_len);
+ if (!memory_range)
+ goto err;
+
+ base_memory_range = (struct memory_range *) realloc(base_memory_range,
+ memory_range_len);
+ if (!base_memory_range)
+ goto err;
+
+ exclude_range = (struct memory_range *) realloc(exclude_range,
+ memory_range_len);
+ if (!exclude_range)
+ goto err;
+
+ usablemem_rgns.ranges = (struct memory_range *)
+ realloc(usablemem_rgns.ranges,
+ memory_range_len);
+ if (!(usablemem_rgns.ranges))
+ goto err;
+
+ return 0;
+
+err:
+ fprintf(stderr, "memory range structure re-allocation failure\n");
+ return -1;
+}
+
+/* Get base memory ranges */
+static int get_base_ranges(void)
+{
+ int local_memory_ranges = 0;
+ char device_tree[256] = "/proc/device-tree/";
+ char fname[256];
+ char buf[MAXBYTES];
+ DIR *dir, *dmem;
+ struct dirent *dentry, *mentry;
+ int n, fd;
+
+ if ((dir = opendir(device_tree)) == NULL) {
+ perror(device_tree);
+ return -1;
+ }
+ while ((dentry = readdir(dir)) != NULL) {
+ if (strncmp(dentry->d_name, "memory@", 7) &&
+ strcmp(dentry->d_name, "memory"))
+ continue;
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ if ((dmem = opendir(fname)) == NULL) {
+ perror(fname);
+ closedir(dir);
+ return -1;
+ }
+ while ((mentry = readdir(dmem)) != NULL) {
+ unsigned long long start, end;
+
+ if (strcmp(mentry->d_name, "reg"))
+ continue;
+ strcat(fname, "/reg");
+ if ((fd = open(fname, O_RDONLY)) < 0) {
+ perror(fname);
+ closedir(dmem);
+ closedir(dir);
+ return -1;
+ }
+ if (read_memory_region_limits(fd, &start, &end) != 0) {
+ close(fd);
+ closedir(dmem);
+ closedir(dir);
+ return -1;
+ }
+ if (local_memory_ranges >= max_memory_ranges) {
+ if (realloc_memory_ranges() < 0){
+ close(fd);
+ break;
+ }
+ }
+
+ base_memory_range[local_memory_ranges].start = start;
+ base_memory_range[local_memory_ranges].end = end;
+ base_memory_range[local_memory_ranges].type = RANGE_RAM;
+ local_memory_ranges++;
+ dbgprintf("%016llx-%016llx : %x\n",
+ base_memory_range[local_memory_ranges-1].start,
+ base_memory_range[local_memory_ranges-1].end,
+ base_memory_range[local_memory_ranges-1].type);
+ close(fd);
+ }
+ closedir(dmem);
+ }
+ closedir(dir);
+ nr_memory_ranges = local_memory_ranges;
+ sort_base_ranges();
+ memory_max = base_memory_range[nr_memory_ranges - 1].end;
+
+ dbgprintf("get base memory ranges:%d\n", nr_memory_ranges);
+
+ return 0;
+}
+
+static int read_kernel_memory_limit(char *fname, char *buf)
+{
+ FILE *file;
+ int n;
+
+ if (!fname || !buf)
+ return -1;
+
+ file = fopen(fname, "r");
+ if (file == NULL) {
+ if (errno != ENOENT) {
+ perror(fname);
+ return -1;
+ }
+ errno = 0;
+ /*
+ * fall through. On older kernel this file
+ * is not present. Hence return success.
+ */
+ } else {
+ /* Memory limit property is of u64 type. */
+ if ((n = fread(&memory_limit, 1, sizeof(uint64_t), file)) < 0) {
+ perror(fname);
+ goto err_out;
+ }
+ if (n != sizeof(uint64_t)) {
+ fprintf(stderr, "%s node has invalid size: %d\n",
+ fname, n);
+ goto err_out;
+ }
+ fclose(file);
+ }
+ return 0;
+err_out:
+ fclose(file);
+ return -1;
+}
+
+/* Return 0 if fname/value valid, -1 otherwise */
+int get_devtree_value(const char *fname, unsigned long long *value)
+{
+ FILE *file;
+ char buf[MAXBYTES];
+ int n = -1;
+
+ if ((file = fopen(fname, "r"))) {
+ n = fread(buf, 1, MAXBYTES, file);
+ fclose(file);
+ }
+
+ if (n == sizeof(uint32_t))
+ *value = ((uint32_t *)buf)[0];
+ else if (n == sizeof(uint64_t))
+ *value = ((uint64_t *)buf)[0];
+ else {
+ fprintf(stderr, "%s node has invalid size: %d\n", fname, n);
+ return -1;
+ }
+
+ return 0;
+}
+
+/* Get devtree details and create exclude_range array
+ * Also create usablemem_ranges for KEXEC_ON_CRASH
+ */
+static int get_devtree_details(unsigned long kexec_flags)
+{
+ uint64_t rmo_base;
+ unsigned long long tce_base;
+ unsigned int tce_size;
+ unsigned long long htab_base, htab_size;
+ unsigned long long kernel_end;
+ unsigned long long initrd_start, initrd_end;
+ char buf[MAXBYTES];
+ char device_tree[256] = "/proc/device-tree/";
+ char fname[256];
+ DIR *dir, *cdir;
+ FILE *file;
+ struct dirent *dentry;
+ int n, i = 0;
+
+ if ((dir = opendir(device_tree)) == NULL) {
+ perror(device_tree);
+ return -1;
+ }
+
+ while ((dentry = readdir(dir)) != NULL) {
+ if (strncmp(dentry->d_name, "chosen", 6) &&
+ strncmp(dentry->d_name, "memory@", 7) &&
+ strncmp(dentry->d_name, "memory", 6) &&
+ strncmp(dentry->d_name, "pci@", 4) &&
+ strncmp(dentry->d_name, "rtas", 4))
+ continue;
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ if ((cdir = opendir(fname)) == NULL) {
+ perror(fname);
+ goto error_opendir;
+ }
+
+ if (strncmp(dentry->d_name, "chosen", 6) == 0) {
+ /* only reserve kernel region if we are doing a crash kernel */
+ if (kexec_flags & KEXEC_ON_CRASH) {
+ strcat(fname, "/linux,kernel-end");
+ file = fopen(fname, "r");
+ if (!file) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if ((n = fread(buf, 1, MAXBYTES, file)) < 0) {
+ perror(fname);
+ goto error_openfile;
+ }
+ if (n == sizeof(uint32_t)) {
+ kernel_end = ((uint32_t *)buf)[0];
+ } else if (n == sizeof(uint64_t)) {
+ kernel_end = ((uint64_t *)buf)[0];
+ } else {
+ fprintf(stderr, "%s node has invalid size: %d\n", fname, n);
+ goto error_openfile;
+ }
+ fclose(file);
+
+ /* Add kernel memory to exclude_range */
+ exclude_range[i].start = 0x0UL;
+ exclude_range[i].end = kernel_end;
+ i++;
+ if (i >= max_memory_ranges)
+ realloc_memory_ranges();
+ memset(fname, 0, sizeof(fname));
+ sprintf(fname, "%s%s%s",
+ device_tree, dentry->d_name,
+ "/linux,crashkernel-base");
+ file = fopen(fname, "r");
+ if (!file) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if ((n = fread(buf, 1, MAXBYTES, file)) < 0) {
+ perror(fname);
+ goto error_openfile;
+ }
+ if (n == sizeof(uint32_t)) {
+ crash_base = ((uint32_t *)buf)[0];
+ } else if (n == sizeof(uint64_t)) {
+ crash_base = ((uint64_t *)buf)[0];
+ } else {
+ fprintf(stderr, "%s node has invalid size: %d\n", fname, n);
+ goto error_openfile;
+ }
+ fclose(file);
+
+ memset(fname, 0, sizeof(fname));
+ sprintf(fname, "%s%s%s",
+ device_tree, dentry->d_name,
+ "/linux,crashkernel-size");
+ file = fopen(fname, "r");
+ if (!file) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if ((n = fread(buf, 1, MAXBYTES, file)) < 0) {
+ perror(fname);
+ goto error_openfile;
+ }
+ if (n == sizeof(uint32_t)) {
+ crash_size = ((uint32_t *)buf)[0];
+ } else if (n == sizeof(uint64_t)) {
+ crash_size = ((uint64_t *)buf)[0];
+ } else {
+ fprintf(stderr, "%s node has invalid size: %d\n", fname, n);
+ goto error_openfile;
+ }
+ fclose(file);
+
+ if (crash_base > mem_min)
+ mem_min = crash_base;
+ if (crash_base + crash_size < mem_max)
+ mem_max = crash_base + crash_size;
+
+#ifndef CONFIG_BOOKE
+ add_usable_mem_rgns(0, crash_base + crash_size);
+ /* Reserve the region (KDUMP_BACKUP_LIMIT,crash_base) */
+ reserve(KDUMP_BACKUP_LIMIT,
+ crash_base-KDUMP_BACKUP_LIMIT);
+#else
+ add_usable_mem_rgns(crash_base, crash_size);
+#endif
+ }
+ /*
+ * Read the first kernel's memory limit.
+ * If the first kernel is booted with mem= option then
+ * it would export "linux,memory-limit" file
+ * reflecting value for the same.
+ */
+ memset(fname, 0, sizeof(fname));
+ snprintf(fname, sizeof(fname), "%s%s%s", device_tree,
+ dentry->d_name, "/linux,memory-limit");
+ if (read_kernel_memory_limit(fname, buf) < 0)
+ goto error_opencdir;
+
+ /* reserve the initrd_start and end locations. */
+ memset(fname, 0, sizeof(fname));
+ sprintf(fname, "%s%s%s",
+ device_tree, dentry->d_name,
+ "/linux,initrd-start");
+ file = fopen(fname, "r");
+ if (!file) {
+ errno = 0;
+ initrd_start = 0;
+ } else {
+ if ((n = fread(buf, 1, MAXBYTES, file)) < 0) {
+ perror(fname);
+ goto error_openfile;
+ }
+ if (n == sizeof(uint32_t)) {
+ initrd_start = ((uint32_t *)buf)[0];
+ } else if (n == sizeof(uint64_t)) {
+ initrd_start = ((uint64_t *)buf)[0];
+ } else {
+ fprintf(stderr, "%s node has invalid size: %d\n", fname, n);
+ goto error_openfile;
+ }
+ fclose(file);
+ }
+
+ memset(fname, 0, sizeof(fname));
+ sprintf(fname, "%s%s%s",
+ device_tree, dentry->d_name,
+ "/linux,initrd-end");
+ file = fopen(fname, "r");
+ if (!file) {
+ errno = 0;
+ initrd_end = 0;
+ } else {
+ if ((n = fread(buf, 1, MAXBYTES, file)) < 0) {
+ perror(fname);
+ goto error_openfile;
+ }
+ if (n == sizeof(uint32_t)) {
+ initrd_end = ((uint32_t *)buf)[0];
+ } else if (n == sizeof(uint64_t)) {
+ initrd_end = ((uint64_t *)buf)[0];
+ } else {
+ fprintf(stderr, "%s node has invalid size: %d\n", fname, n);
+ goto error_openfile;
+ }
+ fclose(file);
+ }
+
+ if ((initrd_end - initrd_start) != 0 ) {
+ initrd_base = initrd_start;
+ initrd_size = initrd_end - initrd_start;
+ }
+
+ if (reuse_initrd) {
+ /* Add initrd address to exclude_range */
+ exclude_range[i].start = initrd_start;
+ exclude_range[i].end = initrd_end;
+ i++;
+ if (i >= max_memory_ranges)
+ realloc_memory_ranges();
+ }
+
+ /* HTAB */
+ memset(fname, 0, sizeof(fname));
+ sprintf(fname, "%s%s%s",
+ device_tree, dentry->d_name,
+ "/linux,htab-base");
+ file = fopen(fname, "r");
+ if (!file) {
+ closedir(cdir);
+ if (errno == ENOENT) {
+ /* Non LPAR */
+ errno = 0;
+ continue;
+ }
+ perror(fname);
+ goto error_opendir;
+ }
+ if (fread(&htab_base, sizeof(unsigned long), 1, file)
+ != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ memset(fname, 0, sizeof(fname));
+ sprintf(fname, "%s%s%s",
+ device_tree, dentry->d_name,
+ "/linux,htab-size");
+ file = fopen(fname, "r");
+ if (!file) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&htab_size, sizeof(unsigned long), 1, file)
+ != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ /* Add htab address to exclude_range - NON-LPAR only */
+ exclude_range[i].start = htab_base;
+ exclude_range[i].end = htab_base + htab_size;
+ i++;
+ if (i >= max_memory_ranges)
+ realloc_memory_ranges();
+
+ } /* chosen */
+ if (strncmp(dentry->d_name, "rtas", 4) == 0) {
+ strcat(fname, "/linux,rtas-base");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&rtas_base, sizeof(unsigned int), 1, file)
+ != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ memset(fname, 0, sizeof(fname));
+ sprintf(fname, "%s%s%s",
+ device_tree, dentry->d_name,
+ "/linux,rtas-size");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&rtas_size, sizeof(unsigned int), 1, file)
+ != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ closedir(cdir);
+ /* Add rtas to exclude_range */
+ exclude_range[i].start = rtas_base;
+ exclude_range[i].end = rtas_base + rtas_size;
+ i++;
+ if (kexec_flags & KEXEC_ON_CRASH)
+ add_usable_mem_rgns(rtas_base, rtas_size);
+ } /* rtas */
+
+ if (!strncmp(dentry->d_name, "memory@", 7) ||
+ !strcmp(dentry->d_name, "memory")) {
+ int fd;
+ strcat(fname, "/reg");
+ if ((fd = open(fname, O_RDONLY)) < 0) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (read_memory_region_limits(fd, &rmo_base, &rmo_top) != 0)
+ goto error_openfile;
+
+ if (rmo_top > 0x30000000UL)
+ rmo_top = 0x30000000UL;
+
+ close(fd);
+ closedir(cdir);
+ } /* memory */
+
+ if (strncmp(dentry->d_name, "pci@", 4) == 0) {
+ strcat(fname, "/linux,tce-base");
+ file = fopen(fname, "r");
+ if (!file) {
+ closedir(cdir);
+ if (errno == ENOENT) {
+ /* Non LPAR */
+ errno = 0;
+ continue;
+ }
+ perror(fname);
+ goto error_opendir;
+ }
+ if (fread(&tce_base, sizeof(unsigned long), 1, file)
+ != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ memset(fname, 0, sizeof(fname));
+ sprintf(fname, "%s%s%s",
+ device_tree, dentry->d_name,
+ "/linux,tce-size");
+ file = fopen(fname, "r");
+ if (!file) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&tce_size, sizeof(unsigned int), 1, file)
+ != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ /* Add tce to exclude_range - NON-LPAR only */
+ exclude_range[i].start = tce_base;
+ exclude_range[i].end = tce_base + tce_size;
+ i++;
+ if (kexec_flags & KEXEC_ON_CRASH)
+ add_usable_mem_rgns(tce_base, tce_size);
+ closedir(cdir);
+ } /* pci */
+ }
+ closedir(dir);
+
+ nr_exclude_ranges = i;
+
+ sort_ranges();
+
+
+ int k;
+ for (k = 0; k < i; k++)
+ dbgprintf("exclude_range sorted exclude_range[%d] "
+ "start:%llx, end:%llx\n", k, exclude_range[k].start,
+ exclude_range[k].end);
+
+ return 0;
+
+error_openfile:
+ fclose(file);
+error_opencdir:
+ closedir(cdir);
+error_opendir:
+ closedir(dir);
+ return -1;
+}
+
+
+/* Setup a sorted list of memory ranges. */
+static int setup_memory_ranges(unsigned long kexec_flags)
+{
+ int i, j = 0;
+
+ /* Get the base list of memory ranges from /proc/device-tree/memory
+ * nodes. Build list of ranges to be excluded from valid memory
+ */
+
+ if (get_base_ranges())
+ goto out;
+ if (get_devtree_details(kexec_flags))
+ goto out;
+
+ for (i = 0; i < nr_exclude_ranges; i++) {
+ /* If first exclude range does not start with 0, include the
+ * first hole of valid memory from 0 - exclude_range[0].start
+ */
+ if (i == 0) {
+ if (exclude_range[i].start != 0) {
+ memory_range[j].start = 0;
+ memory_range[j].end = exclude_range[i].start - 1;
+ memory_range[j].type = RANGE_RAM;
+ j++;
+ }
+ } /* i == 0 */
+ /* If the last exclude range does not end at memory_max, include
+ * the last hole of valid memory from exclude_range[last].end -
+ * memory_max
+ */
+ if (i == nr_exclude_ranges - 1) {
+ if (exclude_range[i].end < memory_max) {
+ memory_range[j].start = exclude_range[i].end + 1;
+ memory_range[j].end = memory_max;
+ memory_range[j].type = RANGE_RAM;
+ j++;
+ /* Limit the end to rmo_top */
+ if (memory_range[j-1].start >= rmo_top) {
+ j--;
+ break;
+ }
+ if ((memory_range[j-1].start < rmo_top) &&
+ (memory_range[j-1].end >= rmo_top)) {
+ memory_range[j-1].end = rmo_top;
+ break;
+ }
+ continue;
+ }
+ } /* i == nr_exclude_ranges - 1 */
+ /* contiguous exclude ranges - skip */
+ if (exclude_range[i+1].start == exclude_range[i].end + 1)
+ continue;
+ memory_range[j].start = exclude_range[i].end + 1;
+ memory_range[j].end = exclude_range[i+1].start - 1;
+ memory_range[j].type = RANGE_RAM;
+ j++;
+ /* Limit range to rmo_top */
+ if (memory_range[j-1].start >= rmo_top) {
+ j--;
+ break;
+ }
+ if ((memory_range[j-1].start < rmo_top) &&
+ (memory_range[j-1].end >= rmo_top)) {
+ memory_range[j-1].end = rmo_top;
+ break;
+ }
+ }
+
+ /* fixup in case we have no exclude regions */
+ if (!j) {
+ memory_range[0].start = base_memory_range[0].start;
+ memory_range[0].end = rmo_top;
+ memory_range[0].type = RANGE_RAM;
+ nr_memory_ranges = 1;
+ } else
+ nr_memory_ranges = j;
+
+
+ int k;
+ for (k = 0; k < j; k++)
+ dbgprintf("setup_memory_ranges memory_range[%d] "
+ "start:%llx, end:%llx\n", k, memory_range[k].start,
+ memory_range[k].end);
+ return 0;
+
+out:
+ cleanup_memory_ranges();
+ return -1;
+}
+
+
+/* Return a list of valid memory ranges */
+int get_memory_ranges_dt(struct memory_range **range, int *ranges,
+ unsigned long kexec_flags)
+{
+ if (count_memory_ranges())
+ return -1;
+ if (alloc_memory_ranges())
+ return -1;
+ if (setup_memory_ranges(kexec_flags))
+ return -1;
+
+ *range = memory_range;
+ *ranges = nr_memory_ranges;
+ return 0;
+}
+#endif
+
+/* Return a sorted list of memory ranges. */
+int get_memory_ranges(struct memory_range **range, int *ranges,
+ unsigned long kexec_flags)
+{
+ int res = 0;
+
+ res = init_memory_region_info();
+ if (res != 0)
+ return res;
+#ifdef WITH_GAMECUBE
+ return get_memory_ranges_gc(range, ranges, kexec_flags);
+#else
+ return get_memory_ranges_dt(range, ranges, kexec_flags);
+#endif
+}
+
+struct file_type file_type[] = {
+ {"elf-ppc", elf_ppc_probe, elf_ppc_load, elf_ppc_usage},
+ {"dol-ppc", dol_ppc_probe, dol_ppc_load, dol_ppc_usage},
+ {"uImage-ppc", uImage_ppc_probe, uImage_ppc_load, uImage_ppc_usage },
+};
+int file_types = sizeof(file_type) / sizeof(file_type[0]);
+
+void arch_usage(void)
+{
+}
+
+int arch_process_options(int argc, char **argv)
+{
+ return 0;
+}
+
+const struct arch_map_entry arches[] = {
+ /* For compatibility with older patches
+ * use KEXEC_ARCH_DEFAULT instead of KEXEC_ARCH_PPC here.
+ */
+ { "ppc", KEXEC_ARCH_DEFAULT },
+ { NULL, 0 },
+};
+
+int arch_compat_trampoline(struct kexec_info *UNUSED(info))
+{
+ return 0;
+}
+
+void arch_update_purgatory(struct kexec_info *UNUSED(info))
+{
+}
+
diff --git a/kexec/arch/ppc/kexec-ppc.h b/kexec/arch/ppc/kexec-ppc.h
new file mode 100644
index 0000000..04e728e
--- /dev/null
+++ b/kexec/arch/ppc/kexec-ppc.h
@@ -0,0 +1,86 @@
+#ifndef KEXEC_PPC_H
+#define KEXEC_PPC_H
+
+#define MAXBYTES 128
+#define MAX_LINE 160
+#define CORE_TYPE_ELF32 1
+#define CORE_TYPE_ELF64 2
+
+#define COMMAND_LINE_SIZE 2048 /* from kernel */
+
+extern unsigned char setup_simple_start[];
+extern uint32_t setup_simple_size;
+
+extern struct {
+ uint32_t spr8;
+} setup_simple_regs;
+
+extern unsigned char setup_dol_start[];
+extern uint32_t setup_dol_size;
+extern uint64_t rmo_top;
+
+extern struct {
+ uint32_t spr8;
+} setup_dol_regs;
+
+#define SIZE_16M (16*1024*1024UL)
+
+int elf_ppc_probe(const char *buf, off_t len);
+int elf_ppc_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void elf_ppc_usage(void);
+
+int uImage_ppc_probe(const char *buf, off_t len);
+int uImage_ppc_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void uImage_ppc_usage(void);
+
+int dol_ppc_probe(const char *buf, off_t len);
+int dol_ppc_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void dol_ppc_usage(void);
+
+/*
+ * During inital setup the kernel does not map the whole memory but a part of
+ * it. On Book-E that is 64MiB, 601 24MiB or 256MiB (if possible).
+ */
+#define KERNEL_ACCESS_TOP (24 * 1024 * 1024)
+
+/* boot block version 17 as defined by the linux kernel */
+struct bootblock {
+ unsigned magic,
+ totalsize,
+ off_dt_struct,
+ off_dt_strings,
+ off_mem_rsvmap,
+ version,
+ last_comp_version,
+ boot_physid,
+ dt_strings_size,
+ dt_struct_size;
+};
+
+typedef struct mem_rgns {
+ unsigned int size;
+ struct memory_range *ranges;
+} mem_rgns_t;
+extern mem_rgns_t usablemem_rgns;
+extern int max_memory_ranges;
+extern unsigned long long crash_base, crash_size;
+extern unsigned long long initrd_base, initrd_size;
+extern unsigned long long ramdisk_base, ramdisk_size;
+extern unsigned char reuse_initrd;
+extern const char *ramdisk;
+
+/* Method to parse the memory/reg nodes in device-tree */
+extern unsigned long dt_address_cells, dt_size_cells;
+extern int init_memory_region_info(void);
+extern int read_memory_region_limits(int fd, unsigned long long *start,
+ unsigned long long *end);
+extern int get_devtree_value(const char *fname, unsigned long long *pvalue);
+/*fs2dt*/
+void reserve(unsigned long long where, unsigned long long length);
+
+/* Defined kexec-uImage-ppc.c */
+extern char* slurp_ramdisk_ppc(const char *filename, off_t *r_size);
+#endif /* KEXEC_PPC_H */
diff --git a/kexec/arch/ppc/kexec-uImage-ppc.c b/kexec/arch/ppc/kexec-uImage-ppc.c
new file mode 100644
index 0000000..e8f7adc
--- /dev/null
+++ b/kexec/arch/ppc/kexec-uImage-ppc.c
@@ -0,0 +1,325 @@
+/*
+ * uImage support for PowerPC
+ */
+#define _GNU_SOURCE
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <sys/types.h>
+#include <image.h>
+#include <getopt.h>
+#include <arch/options.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "kexec-ppc.h"
+#include "fixup_dtb.h"
+#include <kexec-uImage.h>
+#include "crashdump-powerpc.h"
+#include <limits.h>
+
+int create_flatten_tree(struct kexec_info *, unsigned char **, unsigned long *,
+ char *);
+
+/* See options.h -- add any more there, too. */
+static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ {"command-line", 1, 0, OPT_APPEND},
+ {"append", 1, 0, OPT_APPEND},
+ {"ramdisk", 1, 0, OPT_RAMDISK},
+ {"initrd", 1, 0, OPT_RAMDISK},
+ {"dtb", 1, 0, OPT_DTB},
+ {"reuse-node", 1, 0, OPT_NODES},
+ {0, 0, 0, 0},
+};
+static const char short_options[] = KEXEC_ARCH_OPT_STR;
+
+void uImage_ppc_usage(void)
+{
+ printf(
+ " --command-line=STRING Set the kernel command line to STRING.\n"
+ " --append=STRING Set the kernel command line to STRING.\n"
+ " --ramdisk=<filename> Initial RAM disk.\n"
+ " --initrd=<filename> same as --ramdisk\n"
+ " --dtb=<filename> Specify device tree blob file.\n"
+ " --reuse-node=node Specify nodes which should be taken from /proc/device-tree.\n"
+ " Can be set multiple times.\n"
+ );
+}
+
+/*
+ * Load the ramdisk into buffer.
+ * If the supplied image is in uImage format use
+ * uImage_load() to read the payload from the image.
+ */
+char *slurp_ramdisk_ppc(const char *filename, off_t *r_size)
+{
+ struct Image_info img;
+ off_t size;
+ const char *buf = slurp_file(filename, &size);
+ int rc;
+
+ /* Check if this is a uImage RAMDisk */
+ if (!buf)
+ return buf;
+ rc = uImage_probe_ramdisk(buf, size, IH_ARCH_PPC);
+ if (rc < 0)
+ die("uImage: Corrupted ramdisk file %s\n", filename);
+ else if (rc == 0) {
+ if (uImage_load(buf, size, &img) != 0)
+ die("uImage: Reading %ld bytes from %s failed\n",
+ size, filename);
+ buf = img.buf;
+ size = img.len;
+ }
+
+ *r_size = size;
+ return buf;
+}
+
+int uImage_ppc_probe(const char *buf, off_t len)
+{
+ return uImage_probe_kernel(buf, len, IH_ARCH_PPC);
+}
+
+static int ppc_load_bare_bits(int argc, char **argv, const char *buf,
+ off_t len, struct kexec_info *info, unsigned int load_addr,
+ unsigned int ep)
+{
+ char *command_line, *cmdline_buf, *crash_cmdline;
+ char *tmp_cmdline;
+ int command_line_len, crash_cmdline_len;
+ char *dtb;
+ unsigned int addr;
+ unsigned long dtb_addr;
+ unsigned long dtb_addr_actual;
+#define FIXUP_ENTRYS (20)
+ char *fixup_nodes[FIXUP_ENTRYS + 1];
+ int cur_fixup = 0;
+ int opt;
+ int ret = 0;
+ char *seg_buf = NULL;
+ off_t seg_size = 0;
+ unsigned long long hole_addr;
+ unsigned long max_addr;
+ char *blob_buf = NULL;
+ off_t blob_size = 0;
+ char *error_msg = NULL;
+
+ cmdline_buf = NULL;
+ command_line = NULL;
+ tmp_cmdline = NULL;
+ dtb = NULL;
+ max_addr = LONG_MAX;
+
+ while ((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch (opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX) {
+ break;
+ }
+ case OPT_APPEND:
+ tmp_cmdline = optarg;
+ break;
+
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+
+ case OPT_DTB:
+ dtb = optarg;
+ break;
+
+ case OPT_NODES:
+ if (cur_fixup >= FIXUP_ENTRYS) {
+ die("The number of entries for the fixup is too large\n");
+ }
+ fixup_nodes[cur_fixup] = optarg;
+ cur_fixup++;
+ break;
+ }
+ }
+
+ if (ramdisk && reuse_initrd)
+ die("Can't specify --ramdisk or --initrd with --reuseinitrd\n");
+
+ command_line_len = 0;
+ if (tmp_cmdline) {
+ command_line = tmp_cmdline;
+ } else {
+ command_line = get_command_line();
+ }
+ command_line_len = strlen(command_line) + 1;
+
+ fixup_nodes[cur_fixup] = NULL;
+
+ /*
+ * len contains the length of the whole kernel image except the bss
+ * section. The 1 MiB should cover it. The purgatory and the dtb are
+ * allocated from memtop down towards zero so we should never get too
+ * close to the bss :)
+ */
+#define _1MiB (1 * 1024 * 1024)
+
+ /*
+ * If the provided load_addr cannot be allocated, find a new
+ * area. Rebase the entry point based on the new load_addr.
+ */
+ if (!valid_memory_range(info, load_addr, load_addr + (len + _1MiB))) {
+ int ep_offset = ep - load_addr;
+
+ load_addr = locate_hole(info, len + _1MiB, 0, 0, max_addr, 1);
+ if (load_addr == ULONG_MAX) {
+ printf("Can't allocate memory for kernel of len %ld\n",
+ len + _1MiB);
+ return -1;
+ }
+
+ ep = load_addr + ep_offset;
+ }
+
+ add_segment(info, buf, len, load_addr, len + _1MiB);
+
+
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ crash_cmdline = xmalloc(COMMAND_LINE_SIZE);
+ memset((void *)crash_cmdline, 0, COMMAND_LINE_SIZE);
+ ret = load_crashdump_segments(info, crash_cmdline,
+ max_addr, 0);
+ if (ret < 0) {
+ ret = -1;
+ goto out;
+ }
+ crash_cmdline_len = strlen(crash_cmdline);
+ } else {
+ crash_cmdline = NULL;
+ crash_cmdline_len = 0;
+ }
+
+ if (crash_cmdline_len + command_line_len + 1 > COMMAND_LINE_SIZE) {
+ printf("Kernel command line exceeds maximum possible length\n");
+ return -1;
+ }
+
+ cmdline_buf = xmalloc(COMMAND_LINE_SIZE);
+ memset((void *)cmdline_buf, 0, COMMAND_LINE_SIZE);
+
+ if (command_line)
+ strcpy(cmdline_buf, command_line);
+ if (crash_cmdline)
+ strncat(cmdline_buf, crash_cmdline, crash_cmdline_len);
+
+ elf_rel_build_load(info, &info->rhdr, (const char *)purgatory,
+ purgatory_size, 0, -1, -1, 0);
+
+ /* Here we need to initialize the device tree, and find out where
+ * it is going to live so we can place it directly after the
+ * kernel image */
+ if (dtb) {
+ /* Grab device tree from buffer */
+ blob_buf = slurp_file(dtb, &blob_size);
+ } else {
+ create_flatten_tree(info, (unsigned char **)&blob_buf,
+ (unsigned long *)&blob_size, cmdline_buf);
+ }
+ if (!blob_buf || !blob_size) {
+ error_msg = "Device tree seems to be an empty file.\n";
+ goto out2;
+ }
+
+ /* initial fixup for device tree */
+ blob_buf = fixup_dtb_init(info, blob_buf, &blob_size, load_addr, &dtb_addr);
+
+ if (ramdisk) {
+ seg_buf = slurp_ramdisk_ppc(ramdisk, &seg_size);
+ /* Load ramdisk at top of memory */
+ hole_addr = add_buffer(info, seg_buf, seg_size, seg_size,
+ 0, dtb_addr + blob_size, max_addr, -1);
+ ramdisk_base = hole_addr;
+ ramdisk_size = seg_size;
+ }
+ if (reuse_initrd) {
+ ramdisk_base = initrd_base;
+ ramdisk_size = initrd_size;
+ }
+
+ if (info->kexec_flags & KEXEC_ON_CRASH && ramdisk_base != 0) {
+ if ( (ramdisk_base < crash_base) ||
+ (ramdisk_base > crash_base + crash_size) ) {
+ printf("WARNING: ramdisk is above crashkernel region!\n");
+ }
+ else if (ramdisk_base + ramdisk_size > crash_base + crash_size) {
+ printf("WARNING: ramdisk overflows crashkernel region!\n");
+ }
+ }
+
+ /* Perform final fixup on devie tree, i.e. everything beside what
+ * was done above */
+ fixup_dtb_finalize(info, blob_buf, &blob_size, fixup_nodes,
+ cmdline_buf);
+ dtb_addr_actual = add_buffer(info, blob_buf, blob_size, blob_size, 0, dtb_addr,
+ load_addr + KERNEL_ACCESS_TOP, 1);
+ if (dtb_addr_actual != dtb_addr) {
+ printf("dtb_addr_actual: %lx, dtb_addr: %lx\n", dtb_addr_actual, dtb_addr);
+ error_msg = "Error device tree not loadded to address it was expecting to be loaded too!\n";
+ goto out2;
+ }
+
+ /* set various variables for the purgatory */
+ addr = ep;
+ elf_rel_set_symbol(&info->rhdr, "kernel", &addr, sizeof(addr));
+
+ addr = dtb_addr;
+ elf_rel_set_symbol(&info->rhdr, "dt_offset", &addr, sizeof(addr));
+
+#define PUL_STACK_SIZE (16 * 1024)
+ addr = locate_hole(info, PUL_STACK_SIZE, 0, 0, -1, 1);
+ addr += PUL_STACK_SIZE;
+ elf_rel_set_symbol(&info->rhdr, "stack", &addr, sizeof(addr));
+ /* No allocation past here in order not to overwrite the stack */
+#undef PUL_STACK_SIZE
+
+ /*
+ * Fixup ThreadPointer(r2) for purgatory.
+ * PPC32 ELF ABI expects :
+ * ThreadPointer (TP) = TCB + 0x7000
+ * We manually allocate a TCB space and set the TP
+ * accordingly.
+ */
+#define TCB_SIZE 1024
+#define TCB_TP_OFFSET 0x7000 /* PPC32 ELF ABI */
+ addr = locate_hole(info, TCB_SIZE, 0, 0,
+ ((unsigned long)-1 - TCB_TP_OFFSET),
+ 1);
+ addr += TCB_SIZE + TCB_TP_OFFSET;
+ elf_rel_set_symbol(&info->rhdr, "my_thread_ptr", &addr, sizeof(addr));
+#undef TCB_TP_OFFSET
+#undef TCB_SIZE
+
+ addr = elf_rel_get_addr(&info->rhdr, "purgatory_start");
+ info->entry = (void *)addr;
+
+out2:
+ free(cmdline_buf);
+out:
+ free(crash_cmdline);
+ if (!tmp_cmdline)
+ free(command_line);
+ if (error_msg)
+ die("%s", error_msg);
+ return ret;
+}
+
+int uImage_ppc_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ struct Image_info img;
+ int ret;
+
+ ret = uImage_load(buf, len, &img);
+ if (ret)
+ return ret;
+
+ return ppc_load_bare_bits(argc, argv, img.buf, img.len, info,
+ img.base, img.ep);
+}
diff --git a/kexec/arch/ppc/libfdt-wrapper.c b/kexec/arch/ppc/libfdt-wrapper.c
new file mode 100644
index 0000000..ef355d0
--- /dev/null
+++ b/kexec/arch/ppc/libfdt-wrapper.c
@@ -0,0 +1,189 @@
+/*
+ * This file does the necessary interface mapping between the bootwrapper
+ * device tree operations and the interface provided by shared source
+ * files flatdevicetree.[ch].
+ *
+ * Copyright 2007 David Gibson, IBM Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#include <stdlib.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <page.h>
+#include <libfdt.h>
+#include "ops.h"
+#include "../../kexec.h"
+
+#define BAD_ERROR(err) (((err) < 0) \
+ && ((err) != -FDT_ERR_NOTFOUND) \
+ && ((err) != -FDT_ERR_EXISTS))
+
+#define check_err(err) \
+ ({ \
+ if (BAD_ERROR(err) || ((err < 0) && kexec_debug)) \
+ printf("%s():%d %s\n\r", __func__, __LINE__, \
+ fdt_strerror(err)); \
+ if (BAD_ERROR(err)) \
+ exit(1); \
+ (err < 0) ? -1 : 0; \
+ })
+
+#define offset_devp(off) \
+ ({ \
+ int _offset = (off); \
+ check_err(_offset) ? NULL : (void *)(_offset+1); \
+ })
+
+#define devp_offset_find(devp) (((int)(devp))-1)
+#define devp_offset(devp) (devp ? ((int)(devp))-1 : 0)
+
+static void *fdt;
+static void *buf; /* = NULL */
+struct dt_ops dt_ops;
+
+#define EXPAND_GRANULARITY 1024
+
+static void expand_buf(int minexpand)
+{
+ int size = fdt_totalsize(fdt);
+ int rc;
+
+ size = _ALIGN(size + minexpand, EXPAND_GRANULARITY);
+ buf = realloc(buf, size);
+ if (!buf)
+ die("Couldn't find %d bytes to expand device tree\n\r", size);
+ rc = fdt_open_into(fdt, buf, size);
+ if (rc != 0)
+ die("Couldn't expand fdt into new buffer: %s\n\r",
+ fdt_strerror(rc));
+
+ fdt = buf;
+}
+
+static void *fdt_wrapper_finddevice(const char *path)
+{
+ return offset_devp(fdt_path_offset(fdt, path));
+}
+
+static int fdt_wrapper_getprop(const void *devp, const char *name,
+ void *buf, const int buflen)
+{
+ const void *p;
+ int len;
+
+ p = fdt_getprop(fdt, devp_offset(devp), name, &len);
+ if (!p)
+ return check_err(len);
+ memcpy(buf, p, min(len, buflen));
+ return len;
+}
+
+static int fdt_wrapper_setprop(const void *devp, const char *name,
+ const void *buf, const int len)
+{
+ int rc;
+
+ rc = fdt_setprop(fdt, devp_offset(devp), name, buf, len);
+ if (rc == -FDT_ERR_NOSPACE) {
+ expand_buf(len + 16);
+ rc = fdt_setprop(fdt, devp_offset(devp), name, buf, len);
+ }
+
+ return check_err(rc);
+}
+
+static void *fdt_wrapper_get_parent(const void *devp)
+{
+ return offset_devp(fdt_parent_offset(fdt, devp_offset(devp)));
+}
+
+static void *fdt_wrapper_create_node(const void *devp, const char *name)
+{
+ int offset;
+
+ offset = fdt_add_subnode(fdt, devp_offset(devp), name);
+ if (offset == -FDT_ERR_NOSPACE) {
+ expand_buf(strlen(name) + 16);
+ offset = fdt_add_subnode(fdt, devp_offset(devp), name);
+ }
+
+ return offset_devp(offset);
+}
+
+static void *fdt_wrapper_find_node_by_prop_value(const void *prev,
+ const char *name,
+ const char *val,
+ int len)
+{
+ int offset = fdt_node_offset_by_prop_value(fdt, devp_offset_find(prev),
+ name, val, len);
+ return offset_devp(offset);
+}
+
+static void *fdt_wrapper_find_node_by_compatible(const void *prev,
+ const char *val)
+{
+ int offset = fdt_node_offset_by_compatible(fdt, devp_offset_find(prev),
+ val);
+ return offset_devp(offset);
+}
+
+static char *fdt_wrapper_get_path(const void *devp, char *buf, int len)
+{
+ int rc;
+
+ rc = fdt_get_path(fdt, devp_offset(devp), buf, len);
+ if (check_err(rc))
+ return NULL;
+ return buf;
+}
+
+static unsigned long fdt_wrapper_finalize(void)
+{
+ int rc;
+
+ rc = fdt_pack(fdt);
+ if (rc != 0)
+ die("Couldn't pack flat tree: %s\n\r",
+ fdt_strerror(rc));
+ return (unsigned long)fdt;
+}
+
+void fdt_init(void *blob)
+{
+ int err;
+ int bufsize;
+
+ dt_ops.finddevice = fdt_wrapper_finddevice;
+ dt_ops.getprop = fdt_wrapper_getprop;
+ dt_ops.setprop = fdt_wrapper_setprop;
+ dt_ops.get_parent = fdt_wrapper_get_parent;
+ dt_ops.create_node = fdt_wrapper_create_node;
+ dt_ops.find_node_by_prop_value = fdt_wrapper_find_node_by_prop_value;
+ dt_ops.find_node_by_compatible = fdt_wrapper_find_node_by_compatible;
+ dt_ops.get_path = fdt_wrapper_get_path;
+ dt_ops.finalize = fdt_wrapper_finalize;
+
+ /* Make sure the dt blob is the right version and so forth */
+ fdt = blob;
+ bufsize = fdt_totalsize(fdt);
+
+ err = fdt_open_into(fdt, fdt, bufsize);
+ if (err != 0)
+ die("fdt_init(): %s\n\r", fdt_strerror(err));
+}
diff --git a/kexec/arch/ppc/ops.h b/kexec/arch/ppc/ops.h
new file mode 100644
index 0000000..5e7a070
--- /dev/null
+++ b/kexec/arch/ppc/ops.h
@@ -0,0 +1,147 @@
+/*
+ * Global definition of all the bootwrapper operations.
+ *
+ * Author: Mark A. Greer <mgreer@mvista.com>
+ *
+ * 2006 (c) MontaVista Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#ifndef _PPC_BOOT_OPS_H_
+#define _PPC_BOOT_OPS_H_
+#include "types.h"
+
+#define MAX_PATH_LEN 256
+#define MAX_PROP_LEN 256 /* What should this be? */
+
+typedef void (*kernel_entry_t)(unsigned long r3, unsigned long r4, void *r5);
+
+/* Device Tree operations */
+struct dt_ops {
+ void * (*finddevice)(const char *name);
+ int (*getprop)(const void *phandle, const char *name, void *buf,
+ const int buflen);
+ int (*setprop)(const void *phandle, const char *name,
+ const void *buf, const int buflen);
+ void *(*get_parent)(const void *phandle);
+ /* The node must not already exist. */
+ void *(*create_node)(const void *parent, const char *name);
+ void *(*find_node_by_prop_value)(const void *prev,
+ const char *propname,
+ const char *propval, int proplen);
+ void *(*find_node_by_compatible)(const void *prev,
+ const char *compat);
+ unsigned long (*finalize)(void);
+ char *(*get_path)(const void *phandle, char *buf, int len);
+};
+extern struct dt_ops dt_ops;
+
+void fdt_init(void *blob);
+extern void flush_cache(void *, unsigned long);
+int dt_xlate_reg(void *node, int res, unsigned long *addr, unsigned long *size);
+int dt_xlate_addr(void *node, u32 *buf, int buflen, unsigned long *xlated_addr);
+int dt_is_compatible(void *node, const char *compat);
+void dt_get_reg_format(void *node, u32 *naddr, u32 *nsize);
+int dt_get_virtual_reg(void *node, void **addr, int nres);
+
+static inline void *finddevice(const char *name)
+{
+ return (dt_ops.finddevice) ? dt_ops.finddevice(name) : NULL;
+}
+
+static inline int getprop(void *devp, const char *name, void *buf, int buflen)
+{
+ return (dt_ops.getprop) ? dt_ops.getprop(devp, name, buf, buflen) : -1;
+}
+
+static inline int setprop(void *devp, const char *name,
+ const void *buf, int buflen)
+{
+ return (dt_ops.setprop) ? dt_ops.setprop(devp, name, buf, buflen) : -1;
+}
+#define setprop_val(devp, name, val) \
+ do { \
+ typeof(val) x = (val); \
+ setprop((devp), (name), &x, sizeof(x)); \
+ } while (0)
+
+static inline int setprop_str(void *devp, const char *name, const char *buf)
+{
+ if (dt_ops.setprop)
+ return dt_ops.setprop(devp, name, buf, strlen(buf) + 1);
+
+ return -1;
+}
+
+static inline void *get_parent(const char *devp)
+{
+ return dt_ops.get_parent ? dt_ops.get_parent(devp) : NULL;
+}
+
+static inline void *create_node(const void *parent, const char *name)
+{
+ return dt_ops.create_node ? dt_ops.create_node(parent, name) : NULL;
+}
+
+
+static inline void *find_node_by_prop_value(const void *prev,
+ const char *propname,
+ const char *propval, int proplen)
+{
+ if (dt_ops.find_node_by_prop_value)
+ return dt_ops.find_node_by_prop_value(prev, propname,
+ propval, proplen);
+
+ return NULL;
+}
+
+static inline void *find_node_by_prop_value_str(const void *prev,
+ const char *propname,
+ const char *propval)
+{
+ return find_node_by_prop_value(prev, propname, propval,
+ strlen(propval) + 1);
+}
+
+static inline void *find_node_by_devtype(const void *prev,
+ const char *type)
+{
+ return find_node_by_prop_value_str(prev, "device_type", type);
+}
+
+static inline void *find_node_by_alias(const char *alias)
+{
+ void *devp = finddevice("/aliases");
+
+ if (devp) {
+ char path[MAX_PATH_LEN];
+ if (getprop(devp, alias, path, MAX_PATH_LEN) > 0)
+ return finddevice(path);
+ }
+
+ return NULL;
+}
+
+static inline void *find_node_by_compatible(const void *prev,
+ const char *compat)
+{
+ if (dt_ops.find_node_by_compatible)
+ return dt_ops.find_node_by_compatible(prev, compat);
+
+ return NULL;
+}
+
+#define dt_fixup_mac_addresses(...) \
+ __dt_fixup_mac_addresses(0, __VA_ARGS__, NULL)
+
+
+static inline char *get_path(const void *phandle, char *buf, int len)
+{
+ if (dt_ops.get_path)
+ return dt_ops.get_path(phandle, buf, len);
+
+ return NULL;
+}
+
+#endif /* _PPC_BOOT_OPS_H_ */
diff --git a/kexec/arch/ppc/ppc-setup-dol.S b/kexec/arch/ppc/ppc-setup-dol.S
new file mode 100644
index 0000000..17169bd
--- /dev/null
+++ b/kexec/arch/ppc/ppc-setup-dol.S
@@ -0,0 +1,174 @@
+/*
+ * ppc-setup-dol.S - setup glue for Nintendo's GameCube
+ * Copyright (C) 2004 Albert Herranz
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+#include "ppc_asm.h"
+
+ .data
+ .globl setup_dol_start
+setup_dol_start:
+
+ /* Try to reproduce the GameCube "native" environment */
+
+ /* Setup BATs */
+ isync
+ li r8, 0
+ mtspr DBAT0U, r8
+ mtspr DBAT0L, r8
+ mtspr DBAT1U, r8
+ mtspr DBAT1L, r8
+ mtspr DBAT2U, r8
+ mtspr DBAT2L, r8
+ mtspr DBAT3U, r8
+ mtspr DBAT3L, r8
+ mtspr IBAT0U, r8
+ mtspr IBAT0L, r8
+ mtspr IBAT1U, r8
+ mtspr IBAT1L, r8
+ mtspr IBAT2U, r8
+ mtspr IBAT2L, r8
+ mtspr IBAT3U, r8
+ mtspr IBAT3L, r8
+
+ /*
+ * Memory Map
+ * start end size description
+ * 0x80000000 0x817fffff 24MB RAM, uncached
+ * 0xc0000000 0xc17fffff 24MB RAM, cached
+ * 0xc8000000 0xc81fffff 2MB Embedded Framebuffer
+ * 0xcc000000 Hardware registers
+ * 0xe0000000 Layer 2 transfer cache ??? 256KB
+ *
+ */
+
+ isync
+ lis r8, 0x8000 /* IBAT0,DBAT0 for first 16Mbytes */
+ ori r8, r8, 0x01ff /* 16MB */
+ mtspr IBAT0U, r8
+ mtspr DBAT0U, r8
+ li r8, 0x0002 /* rw */
+ mtspr IBAT0L, r8
+ mtspr DBAT0L, r8
+
+ lis r8, 0xc000 /* DBAT1 for IO mem */
+ ori r8, r8, 0x1fff /* 256MB */
+ mtspr DBAT1U, r8
+ li r8, 0x002a /* uncached, guarded ,rw */
+ mtspr DBAT1L, r8
+
+ lis r8, 0x8100 /* IBAT2,DBAT2 for next 8Mbytes */
+ ori r8, r8, 0x00ff /* 8MB */
+ mtspr IBAT2U, r8
+ mtspr DBAT2U, r8
+ lis r8, 0x0100
+ ori r8, r8, 0x0002 /* rw */
+ mtspr IBAT2L, r8
+ mtspr DBAT2L, r8
+
+ lis r8, 0xe000 /* DBAT3 for layer 2 transfer cache ??? */
+ ori r8, r8, 0x01fe /* 16MB ??? */
+ mtspr DBAT3U, r8
+ lis r8, 0xe000
+ ori r8, r8, 0x0002 /* rw */
+ mtspr DBAT3L, r8
+
+ sync
+ isync
+
+/* AFAIK, this is not strictly needed, although seems sane */
+#if 1
+ li r9, 0
+
+ /* page table pointer */
+ sync
+ mtspr SDR1, r9
+
+ /* segment registers */
+ li r8, 16
+ mtctr r8
+ li r8, 0
+1: mtsrin r9, r8 /* zero */
+ sync
+ addis r8,r8,0x1000 /* next register */
+ bdnz 1b
+#endif
+
+ /* switch MMU on and continue */
+ RELOC_SYM(1f)
+ mfmsr r0
+ ori r0, r0, MSR_RI|MSR_ME|MSR_DR|MSR_IR
+ mtspr SRR1, r0
+ oris r3, r3, 0x8000 /* adjust text address */
+ mtspr SRR0, r3
+ oris r1, r1, 0x8000 /* adjust stack */
+ sync
+ rfi
+
+1:
+ /* from now on we run in a DOL-like environment */
+
+
+ /* first, sanitize the hardware a little bit */
+ /* although seems to be not needed in the general case */
+
+#if 1
+ /* audio */
+ lis r8, 0xcc00 /* io mem */
+ li r9, 0
+ sth r9, 0x5036(r8) /* stop audio sample */
+ stw r9, 0x6c00(r8) /* stop streaming */
+ stw r9, 0x6c04(r8) /* mute */
+
+ /* video */
+ mfspr r8, 920 /* spr920 = HID2 */
+ rlwinm r8, r8, 0, 4, 2 /* stop GX FIFO, and more */
+ mtspr 920, r8
+
+ /* exi */
+ lis r8, 0xcc00 /* io mem */
+1: lwz r9,0x680c(r8) /* wait for dma transfer to complete */
+ andi. r9,r9,1
+ bne+ 1b
+ stw r9,0x6800(r8) /* disable exi interrupts */
+ addi r8,r8,0x14 /* next channel */
+ andi. r9,r8,0x40 /* XXX 4 channels? */
+ beq+ 1b
+
+ /* pic */
+ lis r8, 0xcc00 /* io mem */
+ li r9, 0
+ stw r9, 0x3004(r8) /* mask all interrupts */
+ stw r9, 0x3000(r8) /* clear interrupt cause */
+
+ /* invalidate L1 data and instructions caches */
+ mfspr r8, HID0
+ ori r8, r8, HID0_ICFI|HID0_DCI
+ mtspr HID0, r8
+#endif
+
+ /* jump to our entry point */
+ RELOC_SYM(setup_dol_regs)
+ mr r9, r3
+ lwz r5, spr8 - setup_dol_regs(r9)
+
+ mtlr r5
+ blr
+
+ .balign 4
+ .globl setup_dol_regs
+setup_dol_regs:
+spr8: .long 0x00000000
+
+ .balign 4
+//#include "isobel_reloc_debug_console.s"
+
+setup_dol_end:
+
+ .globl setup_dol_size
+setup_dol_size:
+ .long setup_dol_end - setup_dol_start
+
diff --git a/kexec/arch/ppc/ppc-setup-simple.S b/kexec/arch/ppc/ppc-setup-simple.S
new file mode 100644
index 0000000..1317a8d
--- /dev/null
+++ b/kexec/arch/ppc/ppc-setup-simple.S
@@ -0,0 +1,39 @@
+/*
+ * ppc-setup-simple.S - (hopefully) setup for simple embedded platforms
+ * Copyright (C) 2004 Albert Herranz
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+/*
+ * Only suitable for platforms booting with MMU turned off.
+ * -- Albert Herranz
+ */
+
+#include "ppc_asm.h"
+
+ .data
+ .globl setup_simple_start
+setup_simple_start:
+
+ /* should perform here any required setup */
+
+ RELOC_SYM(setup_simple_regs)
+ mr r9, r3
+ lwz r5, spr8 - setup_simple_regs(r9)
+
+ mtlr r5
+ blr
+
+ .balign 4
+ .globl setup_simple_regs
+setup_simple_regs:
+spr8: .long 0x00000000
+
+setup_simple_end:
+
+ .globl setup_simple_size
+setup_simple_size:
+ .long setup_simple_end - setup_simple_start
+
diff --git a/kexec/arch/ppc/ppc_asm.h b/kexec/arch/ppc/ppc_asm.h
new file mode 100644
index 0000000..36503a9
--- /dev/null
+++ b/kexec/arch/ppc/ppc_asm.h
@@ -0,0 +1,506 @@
+/*
+ * ppc_asm.h - mainly bits stolen from Linux kernel asm/reg.h and asm/ppc_asm.h
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+/* Condition Register Bit Fields */
+
+#define cr0 0
+#define cr1 1
+#define cr2 2
+#define cr3 3
+#define cr4 4
+#define cr5 5
+#define cr6 6
+#define cr7 7
+
+
+/* General Purpose Registers (GPRs) */
+
+#define r0 0
+#define r1 1
+#define r2 2
+#define r3 3
+#define r4 4
+#define r5 5
+#define r6 6
+#define r7 7
+#define r8 8
+#define r9 9
+#define r10 10
+#define r11 11
+#define r12 12
+#define r13 13
+#define r14 14
+#define r15 15
+#define r16 16
+#define r17 17
+#define r18 18
+#define r19 19
+#define r20 20
+#define r21 21
+#define r22 22
+#define r23 23
+#define r24 24
+#define r25 25
+#define r26 26
+#define r27 27
+#define r28 28
+#define r29 29
+#define r30 30
+#define r31 31
+
+/* Machine State Register (MSR) Fields */
+#define MSR_SF (1<<63)
+#define MSR_ISF (1<<61)
+#define MSR_VEC (1<<25) /* Enable AltiVec */
+#define MSR_POW (1<<18) /* Enable Power Management */
+#define MSR_WE (1<<18) /* Wait State Enable */
+#define MSR_TGPR (1<<17) /* TLB Update registers in use */
+#define MSR_CE (1<<17) /* Critical Interrupt Enable */
+#define MSR_ILE (1<<16) /* Interrupt Little Endian */
+#define MSR_EE (1<<15) /* External Interrupt Enable */
+#define MSR_PR (1<<14) /* Problem State / Privilege Level */
+#define MSR_FP (1<<13) /* Floating Point enable */
+#define MSR_ME (1<<12) /* Machine Check Enable */
+#define MSR_FE0 (1<<11) /* Floating Exception mode 0 */
+#define MSR_SE (1<<10) /* Single Step */
+#define MSR_BE (1<<9) /* Branch Trace */
+#define MSR_DE (1<<9) /* Debug Exception Enable */
+#define MSR_FE1 (1<<8) /* Floating Exception mode 1 */
+#define MSR_IP (1<<6) /* Exception prefix 0x000/0xFFF */
+#define MSR_IR (1<<5) /* Instruction Relocate */
+#define MSR_DR (1<<4) /* Data Relocate */
+#define MSR_PE (1<<3) /* Protection Enable */
+#define MSR_PX (1<<2) /* Protection Exclusive Mode */
+#define MSR_RI (1<<1) /* Recoverable Exception */
+#define MSR_LE (1<<0) /* Little Endian */
+
+/* Special Purpose Registers (SPRNs)*/
+#define SPRN_CTR 0x009 /* Count Register */
+#define SPRN_DABR 0x3F5 /* Data Address Breakpoint Register */
+#define SPRN_DAR 0x013 /* Data Address Register */
+#define SPRN_TBRL 0x10C /* Time Base Read Lower Register (user, R/O) */
+#define SPRN_TBRU 0x10D /* Time Base Read Upper Register (user, R/O) */
+#define SPRN_TBWL 0x11C /* Time Base Lower Register (super, R/W) */
+#define SPRN_TBWU 0x11D /* Time Base Upper Register (super, R/W) */
+#define SPRN_HIOR 0x137 /* 970 Hypervisor interrupt offset */
+#define SPRN_DBAT0L 0x219 /* Data BAT 0 Lower Register */
+#define SPRN_DBAT0U 0x218 /* Data BAT 0 Upper Register */
+#define SPRN_DBAT1L 0x21B /* Data BAT 1 Lower Register */
+#define SPRN_DBAT1U 0x21A /* Data BAT 1 Upper Register */
+#define SPRN_DBAT2L 0x21D /* Data BAT 2 Lower Register */
+#define SPRN_DBAT2U 0x21C /* Data BAT 2 Upper Register */
+#define SPRN_DBAT3L 0x21F /* Data BAT 3 Lower Register */
+#define SPRN_DBAT3U 0x21E /* Data BAT 3 Upper Register */
+#define SPRN_DBAT4L 0x239 /* Data BAT 4 Lower Register */
+#define SPRN_DBAT4U 0x238 /* Data BAT 4 Upper Register */
+#define SPRN_DBAT5L 0x23B /* Data BAT 5 Lower Register */
+#define SPRN_DBAT5U 0x23A /* Data BAT 5 Upper Register */
+#define SPRN_DBAT6L 0x23D /* Data BAT 6 Lower Register */
+#define SPRN_DBAT6U 0x23C /* Data BAT 6 Upper Register */
+#define SPRN_DBAT7L 0x23F /* Data BAT 7 Lower Register */
+#define SPRN_DBAT7U 0x23E /* Data BAT 7 Upper Register */
+
+#define SPRN_DEC 0x016 /* Decrement Register */
+#define SPRN_DER 0x095 /* Debug Enable Regsiter */
+#define DER_RSTE 0x40000000 /* Reset Interrupt */
+#define DER_CHSTPE 0x20000000 /* Check Stop */
+#define DER_MCIE 0x10000000 /* Machine Check Interrupt */
+#define DER_EXTIE 0x02000000 /* External Interrupt */
+#define DER_ALIE 0x01000000 /* Alignment Interrupt */
+#define DER_PRIE 0x00800000 /* Program Interrupt */
+#define DER_FPUVIE 0x00400000 /* FP Unavailable Interrupt */
+#define DER_DECIE 0x00200000 /* Decrementer Interrupt */
+#define DER_SYSIE 0x00040000 /* System Call Interrupt */
+#define DER_TRE 0x00020000 /* Trace Interrupt */
+#define DER_SEIE 0x00004000 /* FP SW Emulation Interrupt */
+#define DER_ITLBMSE 0x00002000 /* Imp. Spec. Instruction TLB Miss */
+#define DER_ITLBERE 0x00001000 /* Imp. Spec. Instruction TLB Error */
+#define DER_DTLBMSE 0x00000800 /* Imp. Spec. Data TLB Miss */
+#define DER_DTLBERE 0x00000400 /* Imp. Spec. Data TLB Error */
+#define DER_LBRKE 0x00000008 /* Load/Store Breakpoint Interrupt */
+#define DER_IBRKE 0x00000004 /* Instruction Breakpoint Interrupt */
+#define DER_EBRKE 0x00000002 /* External Breakpoint Interrupt */
+#define DER_DPIE 0x00000001 /* Dev. Port Nonmaskable Request */
+#define SPRN_DMISS 0x3D0 /* Data TLB Miss Register */
+#define SPRN_DSISR 0x012 /* Data Storage Interrupt Status Register */
+#define SPRN_EAR 0x11A /* External Address Register */
+#define SPRN_HASH1 0x3D2 /* Primary Hash Address Register */
+#define SPRN_HASH2 0x3D3 /* Secondary Hash Address Resgister */
+#define SPRN_HID0 0x3F0 /* Hardware Implementation Register 0 */
+#define HID0_EMCP (1<<31) /* Enable Machine Check pin */
+#define HID0_EBA (1<<29) /* Enable Bus Address Parity */
+#define HID0_EBD (1<<28) /* Enable Bus Data Parity */
+#define HID0_SBCLK (1<<27)
+#define HID0_EICE (1<<26)
+#define HID0_TBEN (1<<26) /* Timebase enable - 745x */
+#define HID0_ECLK (1<<25)
+#define HID0_PAR (1<<24)
+#define HID0_STEN (1<<24) /* Software table search enable - 745x */
+#define HID0_HIGH_BAT (1<<23) /* Enable high BATs - 7455 */
+#define HID0_DOZE (1<<23)
+#define HID0_NAP (1<<22)
+#define HID0_SLEEP (1<<21)
+#define HID0_DPM (1<<20)
+#define HID0_BHTCLR (1<<18) /* Clear branch history table - 7450 */
+#define HID0_XAEN (1<<17) /* Extended addressing enable - 7450 */
+#define HID0_NHR (1<<16) /* Not hard reset (software bit-7450)*/
+#define HID0_ICE (1<<15) /* Instruction Cache Enable */
+#define HID0_DCE (1<<14) /* Data Cache Enable */
+#define HID0_ILOCK (1<<13) /* Instruction Cache Lock */
+#define HID0_DLOCK (1<<12) /* Data Cache Lock */
+#define HID0_ICFI (1<<11) /* Instr. Cache Flash Invalidate */
+#define HID0_DCI (1<<10) /* Data Cache Invalidate */
+#define HID0_SPD (1<<9) /* Speculative disable */
+#define HID0_SGE (1<<7) /* Store Gathering Enable */
+#define HID0_SIED (1<<7) /* Serial Instr. Execution [Disable] */
+#define HID0_DFCA (1<<6) /* Data Cache Flush Assist */
+#define HID0_LRSTK (1<<4) /* Link register stack - 745x */
+#define HID0_BTIC (1<<5) /* Branch Target Instr Cache Enable */
+#define HID0_ABE (1<<3) /* Address Broadcast Enable */
+#define HID0_FOLD (1<<3) /* Branch Folding enable - 745x */
+#define HID0_BHTE (1<<2) /* Branch History Table Enable */
+#define HID0_BTCD (1<<1) /* Branch target cache disable */
+#define HID0_NOPDST (1<<1) /* No-op dst, dstt, etc. instr. */
+#define HID0_NOPTI (1<<0) /* No-op dcbt and dcbst instr. */
+
+#define SPRN_HID1 0x3F1 /* Hardware Implementation Register 1 */
+#define HID1_EMCP (1<<31) /* 7450 Machine Check Pin Enable */
+#define HID1_PC0 (1<<16) /* 7450 PLL_CFG[0] */
+#define HID1_PC1 (1<<15) /* 7450 PLL_CFG[1] */
+#define HID1_PC2 (1<<14) /* 7450 PLL_CFG[2] */
+#define HID1_PC3 (1<<13) /* 7450 PLL_CFG[3] */
+#define HID1_SYNCBE (1<<11) /* 7450 ABE for sync, eieio */
+#define HID1_ABE (1<<10) /* 7450 Address Broadcast Enable */
+#define SPRN_HID2 0x3F8 /* Hardware Implementation Register 2 */
+#define SPRN_IABR 0x3F2 /* Instruction Address Breakpoint Register */
+#define SPRN_HID4 0x3F4 /* 970 HID4 */
+#define SPRN_HID5 0x3F6 /* 970 HID5 */
+#if !defined(SPRN_IAC1) && !defined(SPRN_IAC2)
+#define SPRN_IAC1 0x3F4 /* Instruction Address Compare 1 */
+#define SPRN_IAC2 0x3F5 /* Instruction Address Compare 2 */
+#endif
+#define SPRN_IBAT0L 0x211 /* Instruction BAT 0 Lower Register */
+#define SPRN_IBAT0U 0x210 /* Instruction BAT 0 Upper Register */
+#define SPRN_IBAT1L 0x213 /* Instruction BAT 1 Lower Register */
+#define SPRN_IBAT1U 0x212 /* Instruction BAT 1 Upper Register */
+#define SPRN_IBAT2L 0x215 /* Instruction BAT 2 Lower Register */
+#define SPRN_IBAT2U 0x214 /* Instruction BAT 2 Upper Register */
+#define SPRN_IBAT3L 0x217 /* Instruction BAT 3 Lower Register */
+#define SPRN_IBAT3U 0x216 /* Instruction BAT 3 Upper Register */
+#define SPRN_IBAT4L 0x231 /* Instruction BAT 4 Lower Register */
+#define SPRN_IBAT4U 0x230 /* Instruction BAT 4 Upper Register */
+#define SPRN_IBAT5L 0x233 /* Instruction BAT 5 Lower Register */
+#define SPRN_IBAT5U 0x232 /* Instruction BAT 5 Upper Register */
+#define SPRN_IBAT6L 0x235 /* Instruction BAT 6 Lower Register */
+#define SPRN_IBAT6U 0x234 /* Instruction BAT 6 Upper Register */
+#define SPRN_IBAT7L 0x237 /* Instruction BAT 7 Lower Register */
+#define SPRN_IBAT7U 0x236 /* Instruction BAT 7 Upper Register */
+#define SPRN_ICMP 0x3D5 /* Instruction TLB Compare Register */
+#define SPRN_ICTC 0x3FB /* Instruction Cache Throttling Control Reg */
+#define SPRN_ICTRL 0x3F3 /* 1011 7450 icache and interrupt ctrl */
+#define ICTRL_EICE 0x08000000 /* enable icache parity errs */
+#define ICTRL_EDC 0x04000000 /* enable dcache parity errs */
+#define ICTRL_EICP 0x00000100 /* enable icache par. check */
+#define SPRN_IMISS 0x3D4 /* Instruction TLB Miss Register */
+#define SPRN_IMMR 0x27E /* Internal Memory Map Register */
+#define SPRN_L2CR 0x3F9 /* Level 2 Cache Control Regsiter */
+#define SPRN_L2CR2 0x3f8
+#define L2CR_L2E 0x80000000 /* L2 enable */
+#define L2CR_L2PE 0x40000000 /* L2 parity enable */
+#define L2CR_L2SIZ_MASK 0x30000000 /* L2 size mask */
+#define L2CR_L2SIZ_256KB 0x10000000 /* L2 size 256KB */
+#define L2CR_L2SIZ_512KB 0x20000000 /* L2 size 512KB */
+#define L2CR_L2SIZ_1MB 0x30000000 /* L2 size 1MB */
+#define L2CR_L2CLK_MASK 0x0e000000 /* L2 clock mask */
+#define L2CR_L2CLK_DISABLED 0x00000000 /* L2 clock disabled */
+#define L2CR_L2CLK_DIV1 0x02000000 /* L2 clock / 1 */
+#define L2CR_L2CLK_DIV1_5 0x04000000 /* L2 clock / 1.5 */
+#define L2CR_L2CLK_DIV2 0x08000000 /* L2 clock / 2 */
+#define L2CR_L2CLK_DIV2_5 0x0a000000 /* L2 clock / 2.5 */
+#define L2CR_L2CLK_DIV3 0x0c000000 /* L2 clock / 3 */
+#define L2CR_L2RAM_MASK 0x01800000 /* L2 RAM type mask */
+#define L2CR_L2RAM_FLOW 0x00000000 /* L2 RAM flow through */
+#define L2CR_L2RAM_PIPE 0x01000000 /* L2 RAM pipelined */
+#define L2CR_L2RAM_PIPE_LW 0x01800000 /* L2 RAM pipelined latewr */
+#define L2CR_L2DO 0x00400000 /* L2 data only */
+#define L2CR_L2I 0x00200000 /* L2 global invalidate */
+#define L2CR_L2CTL 0x00100000 /* L2 RAM control */
+#define L2CR_L2WT 0x00080000 /* L2 write-through */
+#define L2CR_L2TS 0x00040000 /* L2 test support */
+#define L2CR_L2OH_MASK 0x00030000 /* L2 output hold mask */
+#define L2CR_L2OH_0_5 0x00000000 /* L2 output hold 0.5 ns */
+#define L2CR_L2OH_1_0 0x00010000 /* L2 output hold 1.0 ns */
+#define L2CR_L2SL 0x00008000 /* L2 DLL slow */
+#define L2CR_L2DF 0x00004000 /* L2 differential clock */
+#define L2CR_L2BYP 0x00002000 /* L2 DLL bypass */
+#define L2CR_L2IP 0x00000001 /* L2 GI in progress */
+#define SPRN_L3CR 0x3FA /* Level 3 Cache Control Regsiter */
+#define L3CR_L3E 0x80000000 /* L3 enable */
+#define L3CR_L3PE 0x40000000 /* L3 data parity enable */
+#define L3CR_L3APE 0x20000000 /* L3 addr parity enable */
+#define L3CR_L3SIZ 0x10000000 /* L3 size */
+#define L3CR_L3CLKEN 0x08000000 /* L3 clock enable */
+#define L3CR_L3RES 0x04000000 /* L3 special reserved bit */
+#define L3CR_L3CLKDIV 0x03800000 /* L3 clock divisor */
+#define L3CR_L3IO 0x00400000 /* L3 instruction only */
+#define L3CR_L3SPO 0x00040000 /* L3 sample point override */
+#define L3CR_L3CKSP 0x00030000 /* L3 clock sample point */
+#define L3CR_L3PSP 0x0000e000 /* L3 P-clock sample point */
+#define L3CR_L3REP 0x00001000 /* L3 replacement algorithm */
+#define L3CR_L3HWF 0x00000800 /* L3 hardware flush */
+#define L3CR_L3I 0x00000400 /* L3 global invalidate */
+#define L3CR_L3RT 0x00000300 /* L3 SRAM type */
+#define L3CR_L3NIRCA 0x00000080 /* L3 non-integer ratio clock adj. */
+#define L3CR_L3DO 0x00000040 /* L3 data only mode */
+#define L3CR_PMEN 0x00000004 /* L3 private memory enable */
+#define L3CR_PMSIZ 0x00000001 /* L3 private memory size */
+#define SPRN_MSSCR0 0x3f6 /* Memory Subsystem Control Register 0 */
+#define SPRN_MSSSR0 0x3f7 /* Memory Subsystem Status Register 1 */
+#define SPRN_LDSTCR 0x3f8 /* Load/Store control register */
+#define SPRN_LDSTDB 0x3f4 /* */
+#define SPRN_LR 0x008 /* Link Register */
+#define SPRN_MMCR0 0x3B8 /* Monitor Mode Control Register 0 */
+#define SPRN_MMCR1 0x3BC /* Monitor Mode Control Register 1 */
+#ifndef SPRN_PIR
+#define SPRN_PIR 0x3FF /* Processor Identification Register */
+#endif
+#define SPRN_PMC1 0x3B9 /* Performance Counter Register 1 */
+#define SPRN_PMC2 0x3BA /* Performance Counter Register 2 */
+#define SPRN_PMC3 0x3BD /* Performance Counter Register 3 */
+#define SPRN_PMC4 0x3BE /* Performance Counter Register 4 */
+#define SPRN_PTEHI 0x3D5 /* 981 7450 PTE HI word (S/W TLB load) */
+#define SPRN_PTELO 0x3D6 /* 982 7450 PTE LO word (S/W TLB load) */
+#define SPRN_PVR 0x11F /* Processor Version Register */
+#define SPRN_RPA 0x3D6 /* Required Physical Address Register */
+#define SPRN_SDA 0x3BF /* Sampled Data Address Register */
+#define SPRN_SDR1 0x019 /* MMU Hash Base Register */
+#define SPRN_SIA 0x3BB /* Sampled Instruction Address Register */
+#define SPRN_SPRG0 0x110 /* Special Purpose Register General 0 */
+#define SPRN_SPRG1 0x111 /* Special Purpose Register General 1 */
+#define SPRN_SPRG2 0x112 /* Special Purpose Register General 2 */
+#define SPRN_SPRG3 0x113 /* Special Purpose Register General 3 */
+#define SPRN_SPRG4 0x114 /* Special Purpose Register General 4 */
+#define SPRN_SPRG5 0x115 /* Special Purpose Register General 5 */
+#define SPRN_SPRG6 0x116 /* Special Purpose Register General 6 */
+#define SPRN_SPRG7 0x117 /* Special Purpose Register General 7 */
+#define SPRN_SRR0 0x01A /* Save/Restore Register 0 */
+#define SPRN_SRR1 0x01B /* Save/Restore Register 1 */
+#define SPRN_THRM1 0x3FC /* Thermal Management Register 1 */
+/* these bits were defined in inverted endian sense originally, ugh, confusing */
+#define THRM1_TIN (1 << 31)
+#define THRM1_TIV (1 << 30)
+#define THRM1_THRES(x) ((x&0x7f)<<23)
+#define THRM3_SITV(x) ((x&0x3fff)<<1)
+#define THRM1_TID (1<<2)
+#define THRM1_TIE (1<<1)
+#define THRM1_V (1<<0)
+#define SPRN_THRM2 0x3FD /* Thermal Management Register 2 */
+#define SPRN_THRM3 0x3FE /* Thermal Management Register 3 */
+#define THRM3_E (1<<0)
+#define SPRN_TLBMISS 0x3D4 /* 980 7450 TLB Miss Register */
+#define SPRN_UMMCR0 0x3A8 /* User Monitor Mode Control Register 0 */
+#define SPRN_UMMCR1 0x3AC /* User Monitor Mode Control Register 0 */
+#define SPRN_UPMC1 0x3A9 /* User Performance Counter Register 1 */
+#define SPRN_UPMC2 0x3AA /* User Performance Counter Register 2 */
+#define SPRN_UPMC3 0x3AD /* User Performance Counter Register 3 */
+#define SPRN_UPMC4 0x3AE /* User Performance Counter Register 4 */
+#define SPRN_USIA 0x3AB /* User Sampled Instruction Address Register */
+#define SPRN_VRSAVE 0x100 /* Vector Register Save Register */
+#define SPRN_XER 0x001 /* Fixed Point Exception Register */
+
+/* Bit definitions for MMCR0 and PMC1 / PMC2. */
+#define MMCR0_PMC1_CYCLES (1 << 7)
+#define MMCR0_PMC1_ICACHEMISS (5 << 7)
+#define MMCR0_PMC1_DTLB (6 << 7)
+#define MMCR0_PMC2_DCACHEMISS 0x6
+#define MMCR0_PMC2_CYCLES 0x1
+#define MMCR0_PMC2_ITLB 0x7
+#define MMCR0_PMC2_LOADMISSTIME 0x5
+
+/* Short-hand versions for a number of the above SPRNs */
+#define CTR SPRN_CTR /* Counter Register */
+#define DAR SPRN_DAR /* Data Address Register */
+#define DABR SPRN_DABR /* Data Address Breakpoint Register */
+#define DBAT0L SPRN_DBAT0L /* Data BAT 0 Lower Register */
+#define DBAT0U SPRN_DBAT0U /* Data BAT 0 Upper Register */
+#define DBAT1L SPRN_DBAT1L /* Data BAT 1 Lower Register */
+#define DBAT1U SPRN_DBAT1U /* Data BAT 1 Upper Register */
+#define DBAT2L SPRN_DBAT2L /* Data BAT 2 Lower Register */
+#define DBAT2U SPRN_DBAT2U /* Data BAT 2 Upper Register */
+#define DBAT3L SPRN_DBAT3L /* Data BAT 3 Lower Register */
+#define DBAT3U SPRN_DBAT3U /* Data BAT 3 Upper Register */
+#define DBAT4L SPRN_DBAT4L /* Data BAT 4 Lower Register */
+#define DBAT4U SPRN_DBAT4U /* Data BAT 4 Upper Register */
+#define DBAT5L SPRN_DBAT5L /* Data BAT 5 Lower Register */
+#define DBAT5U SPRN_DBAT5U /* Data BAT 5 Upper Register */
+#define DBAT6L SPRN_DBAT6L /* Data BAT 6 Lower Register */
+#define DBAT6U SPRN_DBAT6U /* Data BAT 6 Upper Register */
+#define DBAT7L SPRN_DBAT7L /* Data BAT 7 Lower Register */
+#define DBAT7U SPRN_DBAT7U /* Data BAT 7 Upper Register */
+#define DEC SPRN_DEC /* Decrement Register */
+#define DMISS SPRN_DMISS /* Data TLB Miss Register */
+#define DSISR SPRN_DSISR /* Data Storage Interrupt Status Register */
+#define EAR SPRN_EAR /* External Address Register */
+#define HASH1 SPRN_HASH1 /* Primary Hash Address Register */
+#define HASH2 SPRN_HASH2 /* Secondary Hash Address Register */
+#define HID0 SPRN_HID0 /* Hardware Implementation Register 0 */
+#define HID1 SPRN_HID1 /* Hardware Implementation Register 1 */
+#define IABR SPRN_IABR /* Instruction Address Breakpoint Register */
+#define IBAT0L SPRN_IBAT0L /* Instruction BAT 0 Lower Register */
+#define IBAT0U SPRN_IBAT0U /* Instruction BAT 0 Upper Register */
+#define IBAT1L SPRN_IBAT1L /* Instruction BAT 1 Lower Register */
+#define IBAT1U SPRN_IBAT1U /* Instruction BAT 1 Upper Register */
+#define IBAT2L SPRN_IBAT2L /* Instruction BAT 2 Lower Register */
+#define IBAT2U SPRN_IBAT2U /* Instruction BAT 2 Upper Register */
+#define IBAT3L SPRN_IBAT3L /* Instruction BAT 3 Lower Register */
+#define IBAT3U SPRN_IBAT3U /* Instruction BAT 3 Upper Register */
+#define IBAT4L SPRN_IBAT4L /* Instruction BAT 4 Lower Register */
+#define IBAT4U SPRN_IBAT4U /* Instruction BAT 4 Upper Register */
+#define IBAT5L SPRN_IBAT5L /* Instruction BAT 5 Lower Register */
+#define IBAT5U SPRN_IBAT5U /* Instruction BAT 5 Upper Register */
+#define IBAT6L SPRN_IBAT6L /* Instruction BAT 6 Lower Register */
+#define IBAT6U SPRN_IBAT6U /* Instruction BAT 6 Upper Register */
+#define IBAT7L SPRN_IBAT7L /* Instruction BAT 7 Lower Register */
+#define IBAT7U SPRN_IBAT7U /* Instruction BAT 7 Upper Register */
+#define ICMP SPRN_ICMP /* Instruction TLB Compare Register */
+#define IMISS SPRN_IMISS /* Instruction TLB Miss Register */
+#define IMMR SPRN_IMMR /* PPC 860/821 Internal Memory Map Register */
+#define L2CR SPRN_L2CR /* Classic PPC L2 cache control register */
+#define L3CR SPRN_L3CR /* PPC 745x L3 cache control register */
+#define LR SPRN_LR
+#define PVR SPRN_PVR /* Processor Version */
+#define RPA SPRN_RPA /* Required Physical Address Register */
+#define SDR1 SPRN_SDR1 /* MMU hash base register */
+#define SPR0 SPRN_SPRG0 /* Supervisor Private Registers */
+#define SPR1 SPRN_SPRG1
+#define SPR2 SPRN_SPRG2
+#define SPR3 SPRN_SPRG3
+#define SPR4 SPRN_SPRG4
+#define SPR5 SPRN_SPRG5
+#define SPR6 SPRN_SPRG6
+#define SPR7 SPRN_SPRG7
+#define SPRG0 SPRN_SPRG0
+#define SPRG1 SPRN_SPRG1
+#define SPRG2 SPRN_SPRG2
+#define SPRG3 SPRN_SPRG3
+#define SPRG4 SPRN_SPRG4
+#define SPRG5 SPRN_SPRG5
+#define SPRG6 SPRN_SPRG6
+#define SPRG7 SPRN_SPRG7
+#define SRR0 SPRN_SRR0 /* Save and Restore Register 0 */
+#define SRR1 SPRN_SRR1 /* Save and Restore Register 1 */
+#define SRR2 SPRN_SRR2 /* Save and Restore Register 2 */
+#define SRR3 SPRN_SRR3 /* Save and Restore Register 3 */
+#define ICTC SPRN_ICTC /* Instruction Cache Throttling Control Reg */
+#define THRM1 SPRN_THRM1 /* Thermal Management Register 1 */
+#define THRM2 SPRN_THRM2 /* Thermal Management Register 2 */
+#define THRM3 SPRN_THRM3 /* Thermal Management Register 3 */
+#define XER SPRN_XER
+#define TBRL SPRN_TBRL /* Time Base Read Lower Register */
+#define TBRU SPRN_TBRU /* Time Base Read Upper Register */
+#define TBWL SPRN_TBWL /* Time Base Write Lower Register */
+#define TBWU SPRN_TBWU /* Time Base Write Upper Register */
+
+/* Processor Version Register */
+
+/* Processor Version Register (PVR) field extraction */
+
+#define PVR_VER(pvr) (((pvr) >> 16) & 0xFFFF) /* Version field */
+#define PVR_REV(pvr) (((pvr) >> 0) & 0xFFFF) /* Revison field */
+
+/*
+ * IBM has further subdivided the standard PowerPC 16-bit version and
+ * revision subfields of the PVR for the PowerPC 403s into the following:
+ */
+
+#define PVR_FAM(pvr) (((pvr) >> 20) & 0xFFF) /* Family field */
+#define PVR_MEM(pvr) (((pvr) >> 16) & 0xF) /* Member field */
+#define PVR_CORE(pvr) (((pvr) >> 12) & 0xF) /* Core field */
+#define PVR_CFG(pvr) (((pvr) >> 8) & 0xF) /* Configuration field */
+#define PVR_MAJ(pvr) (((pvr) >> 4) & 0xF) /* Major revision field */
+#define PVR_MIN(pvr) (((pvr) >> 0) & 0xF) /* Minor revision field */
+
+/* Processor Version Numbers */
+
+#define PVR_403GA 0x00200000
+#define PVR_403GB 0x00200100
+#define PVR_403GC 0x00200200
+#define PVR_403GCX 0x00201400
+#define PVR_405GP 0x40110000
+#define PVR_STB03XXX 0x40310000
+#define PVR_NP405H 0x41410000
+#define PVR_NP405L 0x41610000
+#define PVR_440GP_RB 0x40120440
+#define PVR_440GP_RC1 0x40120481
+#define PVR_440GP_RC2 0x40200481
+#define PVR_440GX_RA 0x51b21850
+#define PVR_440GX_RB 0x51b21851
+#define PVR_440GX_RB1 0x51b21852
+#define PVR_601 0x00010000
+#define PVR_602 0x00050000
+#define PVR_603 0x00030000
+#define PVR_603e 0x00060000
+#define PVR_603ev 0x00070000
+#define PVR_603r 0x00071000
+#define PVR_604 0x00040000
+#define PVR_604e 0x00090000
+#define PVR_604r 0x000A0000
+#define PVR_620 0x00140000
+#define PVR_740 0x00080000
+#define PVR_750 PVR_740
+#define PVR_740P 0x10080000
+#define PVR_750P PVR_740P
+#define PVR_7400 0x000C0000
+#define PVR_7410 0x800C0000
+#define PVR_7450 0x80000000
+/*
+ * For the 8xx processors, all of them report the same PVR family for
+ * the PowerPC core. The various versions of these processors must be
+ * differentiated by the version number in the Communication Processor
+ * Module (CPM).
+ */
+#define PVR_821 0x00500000
+#define PVR_823 PVR_821
+#define PVR_850 PVR_821
+#define PVR_860 PVR_821
+#define PVR_8240 0x00810100
+#define PVR_8245 0x80811014
+#define PVR_8260 PVR_8240
+
+/* Segment Registers */
+#define SR0 0
+#define SR1 1
+#define SR2 2
+#define SR3 3
+#define SR4 4
+#define SR5 5
+#define SR6 6
+#define SR7 7
+#define SR8 8
+#define SR9 9
+#define SR10 10
+#define SR11 11
+#define SR12 12
+#define SR13 13
+#define SR14 14
+#define SR15 15
+
+
+/* returns r3 = relocated address of sym */
+/* modifies r0 */
+#define RELOC_SYM(sym) \
+ mflr r3; \
+ bl 1f; \
+1: mflr r0; \
+ mtlr r3; \
+ lis r3, 1b@ha; \
+ ori r3, r3, 1b@l; \
+ subf r0, r3, r0; \
+ lis r3, sym@ha; \
+ ori r3, r3, sym@l; \
+ add r3, r3, r0
+
diff --git a/kexec/arch/ppc64/Makefile b/kexec/arch/ppc64/Makefile
new file mode 100644
index 0000000..9caf501
--- /dev/null
+++ b/kexec/arch/ppc64/Makefile
@@ -0,0 +1,26 @@
+#
+# kexec ppc64 (linux booting linux)
+#
+include $(srcdir)/kexec/libfdt/Makefile.libfdt
+
+ppc64_KEXEC_SRCS = kexec/arch/ppc64/kexec-elf-rel-ppc64.c
+ppc64_KEXEC_SRCS += kexec/arch/ppc64/kexec-zImage-ppc64.c
+ppc64_KEXEC_SRCS += kexec/arch/ppc64/kexec-elf-ppc64.c
+ppc64_KEXEC_SRCS += kexec/arch/ppc64/kexec-ppc64.c
+ppc64_KEXEC_SRCS += kexec/arch/ppc64/crashdump-ppc64.c
+ppc64_KEXEC_SRCS += kexec/arch/ppc64/fdt.c
+ppc64_KEXEC_SRCS += $(LIBFDT_SRCS:%=kexec/libfdt/%)
+
+ppc64_ARCH_REUSE_INITRD =
+
+ppc64_FS2DT = kexec/fs2dt.c
+ppc64_FS2DT_INCLUDE = -include $(srcdir)/kexec/arch/ppc64/crashdump-ppc64.h \
+ -include $(srcdir)/kexec/arch/ppc64/kexec-ppc64.h
+
+ppc64_CPPFLAGS = -I$(srcdir)/kexec/libfdt
+
+dist += kexec/arch/ppc64/Makefile $(ppc64_KEXEC_SRCS) \
+ kexec/arch/ppc64/kexec-ppc64.h kexec/arch/ppc64/crashdump-ppc64.h \
+ kexec/arch/ppc64/include/arch/fdt.h \
+ kexec/arch/ppc64/include/arch/options.h
+
diff --git a/kexec/arch/ppc64/crashdump-ppc64.c b/kexec/arch/ppc64/crashdump-ppc64.c
new file mode 100644
index 0000000..6d47898
--- /dev/null
+++ b/kexec/arch/ppc64/crashdump-ppc64.c
@@ -0,0 +1,644 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Created by: R Sharada (sharada@in.ibm.com)
+ * Copyright (C) IBM Corporation, 2005. All rights reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <limits.h>
+#include <elf.h>
+#include <dirent.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "../../crashdump.h"
+#include "kexec-ppc64.h"
+#include "../../fs2dt.h"
+#include "crashdump-ppc64.h"
+
+#define DEVTREE_CRASHKERNEL_BASE "/proc/device-tree/chosen/linux,crashkernel-base"
+#define DEVTREE_CRASHKERNEL_SIZE "/proc/device-tree/chosen/linux,crashkernel-size"
+
+unsigned int num_of_lmb_sets;
+unsigned int is_dyn_mem_v2;
+uint64_t lmb_size;
+
+static struct crash_elf_info elf_info64 =
+{
+ class: ELFCLASS64,
+#if BYTE_ORDER == LITTLE_ENDIAN
+ data: ELFDATA2LSB,
+#else
+ data: ELFDATA2MSB,
+#endif
+ machine: EM_PPC64,
+ page_offset: PAGE_OFFSET,
+ lowmem_limit: MAXMEM,
+};
+
+static struct crash_elf_info elf_info32 =
+{
+ class: ELFCLASS32,
+ data: ELFDATA2MSB,
+ machine: EM_PPC64,
+ page_offset: PAGE_OFFSET,
+ lowmem_limit: MAXMEM,
+};
+
+extern struct arch_options_t arch_options;
+
+/* Stores a sorted list of RAM memory ranges for which to create elf headers.
+ * A separate program header is created for backup region
+ */
+static struct memory_range *crash_memory_range = NULL;
+
+/* Define a variable to replace the CRASH_MAX_MEMORY_RANGES macro */
+static int crash_max_memory_ranges;
+
+/*
+ * Used to save various memory ranges/regions needed for the captured
+ * kernel to boot. (lime memmap= option in other archs)
+ */
+mem_rgns_t usablemem_rgns = {0, NULL};
+
+static unsigned long long cstart, cend;
+static int memory_ranges;
+
+/*
+ * Exclude the region that lies within crashkernel and above the memory
+ * limit which is reflected by mem= kernel option.
+ */
+static void exclude_crash_region(uint64_t start, uint64_t end)
+{
+ /* If memory_limit is set then exclude the memory region above it. */
+ if (memory_limit) {
+ if (start >= memory_limit)
+ return;
+ if (end > memory_limit)
+ end = memory_limit;
+ }
+
+ if (cstart < end && cend > start) {
+ if (start < cstart && end > cend) {
+ crash_memory_range[memory_ranges].start = start;
+ crash_memory_range[memory_ranges].end = cstart;
+ crash_memory_range[memory_ranges].type = RANGE_RAM;
+ memory_ranges++;
+ crash_memory_range[memory_ranges].start = cend;
+ crash_memory_range[memory_ranges].end = end;
+ crash_memory_range[memory_ranges].type = RANGE_RAM;
+ memory_ranges++;
+ } else if (start < cstart) {
+ crash_memory_range[memory_ranges].start = start;
+ crash_memory_range[memory_ranges].end = cstart;
+ crash_memory_range[memory_ranges].type = RANGE_RAM;
+ memory_ranges++;
+ } else if (end > cend) {
+ crash_memory_range[memory_ranges].start = cend;
+ crash_memory_range[memory_ranges].end = end;
+ crash_memory_range[memory_ranges].type = RANGE_RAM;
+ memory_ranges++;
+ }
+ } else {
+ crash_memory_range[memory_ranges].start = start;
+ crash_memory_range[memory_ranges].end = end;
+ crash_memory_range[memory_ranges].type = RANGE_RAM;
+ memory_ranges++;
+ }
+}
+
+static int get_dyn_reconf_crash_memory_ranges(void)
+{
+ uint64_t start, end;
+ uint64_t startrange, endrange;
+ uint64_t size;
+ char fname[128], buf[32];
+ FILE *file;
+ unsigned int i;
+ int n;
+ uint32_t flags;
+
+ strcpy(fname, "/proc/device-tree/");
+ strcat(fname, "ibm,dynamic-reconfiguration-memory/ibm,dynamic-memory");
+ if (is_dyn_mem_v2)
+ strcat(fname, "-v2");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ return -1;
+ }
+
+ fseek(file, 4, SEEK_SET);
+ startrange = endrange = 0;
+ size = lmb_size;
+ for (i = 0; i < num_of_lmb_sets; i++) {
+ if ((n = fread(buf, 1, LMB_ENTRY_SIZE, file)) < 0) {
+ perror(fname);
+ fclose(file);
+ return -1;
+ }
+ if (memory_ranges >= (max_memory_ranges + 1)) {
+ /* No space to insert another element. */
+ fprintf(stderr,
+ "Error: Number of crash memory ranges"
+ " excedeed the max limit\n");
+ fclose(file);
+ return -1;
+ }
+
+ /*
+ * If the property is ibm,dynamic-memory-v2, the first 4 bytes
+ * tell the number of sequential LMBs in this entry.
+ */
+ if (is_dyn_mem_v2)
+ size = be32_to_cpu(((unsigned int *)buf)[0]) * lmb_size;
+
+ start = be64_to_cpu(*((uint64_t *)&buf[DRCONF_ADDR]));
+ end = start + size;
+ if (start == 0 && end >= (BACKUP_SRC_END + 1))
+ start = BACKUP_SRC_END + 1;
+
+ flags = be32_to_cpu((*((uint32_t *)&buf[DRCONF_FLAGS])));
+ /* skip this block if the reserved bit is set in flags (0x80)
+ or if the block is not assigned to this partition (0x8) */
+ if ((flags & 0x80) || !(flags & 0x8))
+ continue;
+
+ if (start != endrange) {
+ if (startrange != endrange)
+ exclude_crash_region(startrange, endrange);
+ startrange = start;
+ }
+ endrange = end;
+ }
+ if (startrange != endrange)
+ exclude_crash_region(startrange, endrange);
+
+ fclose(file);
+ return 0;
+}
+
+/*
+ * For a given memory node, check if it is mapped to system RAM or
+ * to onboard memory on accelerator device like GPU card or such.
+ */
+static int is_coherent_device_mem(const char *fname)
+{
+ char fpath[PATH_LEN];
+ char buf[32];
+ DIR *dmem;
+ FILE *file;
+ struct dirent *mentry;
+ int cnt, ret = 0;
+
+ strcpy(fpath, fname);
+ if ((dmem = opendir(fpath)) == NULL) {
+ perror(fpath);
+ return -1;
+ }
+
+ while ((mentry = readdir(dmem)) != NULL) {
+ if (strcmp(mentry->d_name, "compatible"))
+ continue;
+
+ strcat(fpath, "/compatible");
+ if ((file = fopen(fpath, "r")) == NULL) {
+ perror(fpath);
+ ret = -1;
+ break;
+ }
+ if ((cnt = fread(buf, 1, 32, file)) < 0) {
+ perror(fpath);
+ fclose(file);
+ ret = -1;
+ break;
+ }
+ if (!strncmp(buf, "ibm,coherent-device-memory", 26)) {
+ fclose(file);
+ ret = 1;
+ break;
+ }
+ fclose(file);
+ }
+
+ closedir(dmem);
+ return ret;
+}
+
+
+/* Reads the appropriate file and retrieves the SYSTEM RAM regions for whom to
+ * create Elf headers. Keeping it separate from get_memory_ranges() as
+ * requirements are different in the case of normal kexec and crashdumps.
+ *
+ * Normal kexec needs to look at all of available physical memory irrespective
+ * of the fact how much of it is being used by currently running kernel.
+ * Crashdumps need to have access to memory regions actually being used by
+ * running kernel. Expecting a different file/data structure than /proc/iomem
+ * to look into down the line. May be something like /proc/kernelmem or may
+ * be zone data structures exported from kernel.
+ */
+static int get_crash_memory_ranges(struct memory_range **range, int *ranges)
+{
+
+ char device_tree[256] = "/proc/device-tree/";
+ char fname[PATH_LEN];
+ char buf[MAXBYTES];
+ DIR *dir, *dmem;
+ FILE *file;
+ struct dirent *dentry, *mentry;
+ int n, ret, crash_rng_len = 0;
+ unsigned long long start, end;
+ int page_size;
+
+ crash_max_memory_ranges = max_memory_ranges + 6;
+ crash_rng_len = sizeof(struct memory_range) * crash_max_memory_ranges;
+
+ crash_memory_range = (struct memory_range *) malloc(crash_rng_len);
+ if (!crash_memory_range) {
+ fprintf(stderr, "Allocation for crash memory range failed\n");
+ return -1;
+ }
+ memset(crash_memory_range, 0, crash_rng_len);
+
+ /* create a separate program header for the backup region */
+ crash_memory_range[0].start = BACKUP_SRC_START;
+ crash_memory_range[0].end = BACKUP_SRC_END + 1;
+ crash_memory_range[0].type = RANGE_RAM;
+ memory_ranges++;
+
+ if ((dir = opendir(device_tree)) == NULL) {
+ perror(device_tree);
+ goto err;
+ }
+
+ cstart = crash_base;
+ cend = crash_base + crash_size;
+
+ while ((dentry = readdir(dir)) != NULL) {
+ if (!strncmp(dentry->d_name,
+ "ibm,dynamic-reconfiguration-memory", 35)){
+ get_dyn_reconf_crash_memory_ranges();
+ continue;
+ }
+ if (strncmp(dentry->d_name, "memory@", 7) &&
+ strcmp(dentry->d_name, "memory"))
+ continue;
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+
+ ret = is_coherent_device_mem(fname);
+ if (ret == -1) {
+ closedir(dir);
+ goto err;
+ } else if (ret == 1) {
+ /*
+ * Avoid adding this memory region as it is not
+ * mapped to system RAM.
+ */
+ continue;
+ }
+
+ if ((dmem = opendir(fname)) == NULL) {
+ perror(fname);
+ closedir(dir);
+ goto err;
+ }
+ while ((mentry = readdir(dmem)) != NULL) {
+ if (strcmp(mentry->d_name, "reg"))
+ continue;
+ strcat(fname, "/reg");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ closedir(dmem);
+ closedir(dir);
+ goto err;
+ }
+ if ((n = fread(buf, 1, MAXBYTES, file)) < 0) {
+ perror(fname);
+ fclose(file);
+ closedir(dmem);
+ closedir(dir);
+ goto err;
+ }
+ if (memory_ranges >= (max_memory_ranges + 1)) {
+ /* No space to insert another element. */
+ fprintf(stderr,
+ "Error: Number of crash memory ranges"
+ " excedeed the max limit\n");
+ goto err;
+ }
+
+ start = be64_to_cpu(((unsigned long long *)buf)[0]);
+ end = start +
+ be64_to_cpu(((unsigned long long *)buf)[1]);
+ if (start == 0 && end >= (BACKUP_SRC_END + 1))
+ start = BACKUP_SRC_END + 1;
+
+ exclude_crash_region(start, end);
+ fclose(file);
+ }
+ closedir(dmem);
+ }
+ closedir(dir);
+
+ /*
+ * If RTAS region is overlapped with crashkernel, need to create ELF
+ * Program header for the overlapped memory.
+ */
+ if (crash_base < rtas_base + rtas_size &&
+ rtas_base < crash_base + crash_size) {
+ page_size = getpagesize();
+ cstart = rtas_base;
+ cend = rtas_base + rtas_size;
+ if (cstart < crash_base)
+ cstart = crash_base;
+ if (cend > crash_base + crash_size)
+ cend = crash_base + crash_size;
+ /*
+ * The rtas section created here is formed by reading rtas-base
+ * and rtas-size from /proc/device-tree/rtas. Unfortunately
+ * rtas-size is not required to be a multiple of PAGE_SIZE
+ * The remainder of the page it ends on is just garbage, and is
+ * safe to read, its just not accounted in rtas-size. Since
+ * we're creating an elf section here though, lets round it up
+ * to the next page size boundary though, so makedumpfile can
+ * read it safely without going south on us.
+ */
+ cend = _ALIGN(cend, page_size);
+
+ crash_memory_range[memory_ranges].start = cstart;
+ crash_memory_range[memory_ranges++].end = cend;
+ }
+
+ /*
+ * If OPAL region is overlapped with crashkernel, need to create ELF
+ * Program header for the overlapped memory.
+ */
+ if (crash_base < opal_base + opal_size &&
+ opal_base < crash_base + crash_size) {
+ page_size = getpagesize();
+ cstart = opal_base;
+ cend = opal_base + opal_size;
+ if (cstart < crash_base)
+ cstart = crash_base;
+ if (cend > crash_base + crash_size)
+ cend = crash_base + crash_size;
+ /*
+ * The opal section created here is formed by reading opal-base
+ * and opal-size from /proc/device-tree/ibm,opal. Unfortunately
+ * opal-size is not required to be a multiple of PAGE_SIZE
+ * The remainder of the page it ends on is just garbage, and is
+ * safe to read, its just not accounted in opal-size. Since
+ * we're creating an elf section here though, lets round it up
+ * to the next page size boundary though, so makedumpfile can
+ * read it safely without going south on us.
+ */
+ cend = _ALIGN(cend, page_size);
+
+ crash_memory_range[memory_ranges].start = cstart;
+ crash_memory_range[memory_ranges++].end = cend;
+ }
+ *range = crash_memory_range;
+ *ranges = memory_ranges;
+
+ int j;
+ dbgprintf("CRASH MEMORY RANGES\n");
+ for(j = 0; j < *ranges; j++) {
+ start = crash_memory_range[j].start;
+ end = crash_memory_range[j].end;
+ dbgprintf("%016Lx-%016Lx\n", start, end);
+ }
+
+ return 0;
+
+err:
+ if (crash_memory_range)
+ free(crash_memory_range);
+ return -1;
+}
+
+static int add_cmdline_param(char *cmdline, uint64_t addr, char *cmdstr,
+ char *byte)
+{
+ int cmdline_size, cmdlen, len, align = 1024;
+ char str[COMMAND_LINE_SIZE], *ptr;
+
+ /* Passing in =xxxK / =xxxM format. Saves space required in cmdline.*/
+ switch (byte[0]) {
+ case 'K':
+ if (addr%align)
+ return -1;
+ addr = addr/align;
+ break;
+ case 'M':
+ addr = addr/(align *align);
+ break;
+ }
+ ptr = str;
+ strcpy(str, cmdstr);
+ ptr += strlen(str);
+ ultoa(addr, ptr);
+ strcat(str, byte);
+ len = strlen(str);
+ cmdlen = strlen(cmdline) + len;
+ cmdline_size = COMMAND_LINE_SIZE;
+ if (cmdlen > (cmdline_size - 1))
+ die("Command line overflow\n");
+ strcat(cmdline, str);
+ dbgprintf("Command line after adding elfcorehdr: %s\n", cmdline);
+ return 0;
+}
+
+/* Loads additional segments in case of a panic kernel is being loaded.
+ * One segment for backup region, another segment for storing elf headers
+ * for crash memory image.
+ */
+int load_crashdump_segments(struct kexec_info *info, char* mod_cmdline,
+ uint64_t max_addr, unsigned long min_base)
+{
+ void *tmp;
+ unsigned long sz;
+ uint64_t elfcorehdr;
+ int nr_ranges, align = 1024, i;
+ unsigned long long end;
+ struct memory_range *mem_range;
+
+ if (get_crash_memory_ranges(&mem_range, &nr_ranges) < 0)
+ return -1;
+
+ info->backup_src_start = BACKUP_SRC_START;
+ info->backup_src_size = BACKUP_SRC_SIZE;
+ /* Create a backup region segment to store backup data*/
+ sz = _ALIGN(BACKUP_SRC_SIZE, align);
+ tmp = xmalloc(sz);
+ memset(tmp, 0, sz);
+ info->backup_start = add_buffer(info, tmp, sz, sz, align,
+ 0, max_addr, 1);
+ reserve(info->backup_start, sz);
+
+ /* On ppc64 memory ranges in device-tree is denoted as start
+ * and size rather than start and end, as is the case with
+ * other architectures like i386 . Because of this when loading
+ * the memory ranges in crashdump-elf.c the filesz calculation
+ * [ end - start + 1 ] goes for a toss.
+ *
+ * To be in sync with other archs adjust the end value for
+ * every crash memory range before calling the generic function
+ */
+
+ for (i = 0; i < nr_ranges; i++) {
+ end = crash_memory_range[i].end - 1;
+ crash_memory_range[i].end = end;
+ }
+
+
+ /* Create elf header segment and store crash image data. */
+ if (arch_options.core_header_type == CORE_TYPE_ELF64) {
+ if (crash_create_elf64_headers(info, &elf_info64,
+ crash_memory_range, nr_ranges,
+ &tmp, &sz,
+ ELF_CORE_HEADER_ALIGN) < 0) {
+ free (tmp);
+ return -1;
+ }
+ }
+ else {
+ if (crash_create_elf32_headers(info, &elf_info32,
+ crash_memory_range, nr_ranges,
+ &tmp, &sz,
+ ELF_CORE_HEADER_ALIGN) < 0) {
+ free(tmp);
+ return -1;
+ }
+ }
+
+ elfcorehdr = add_buffer(info, tmp, sz, sz, align, min_base,
+ max_addr, 1);
+ reserve(elfcorehdr, sz);
+ /* modify and store the cmdline in a global array. This is later
+ * read by flatten_device_tree and modified if required
+ */
+ add_cmdline_param(mod_cmdline, elfcorehdr, " elfcorehdr=", "K");
+ return 0;
+}
+
+/*
+ * Used to save various memory regions needed for the captured kernel.
+ */
+
+void add_usable_mem_rgns(unsigned long long base, unsigned long long size)
+{
+ unsigned int i;
+ unsigned long long end = base + size;
+ unsigned long long ustart, uend;
+
+ base = _ALIGN_DOWN(base, getpagesize());
+ end = _ALIGN_UP(end, getpagesize());
+
+ for (i=0; i < usablemem_rgns.size; i++) {
+ ustart = usablemem_rgns.ranges[i].start;
+ uend = usablemem_rgns.ranges[i].end;
+ if (base < uend && end > ustart) {
+ if ((base >= ustart) && (end <= uend))
+ return;
+ if (base < ustart && end > uend) {
+ usablemem_rgns.ranges[i].start = base;
+ usablemem_rgns.ranges[i].end = end;
+#ifdef DEBUG
+ fprintf(stderr, "usable memory rgn %u: new base:%llx new size:%llx\n",
+ i, base, size);
+#endif
+ return;
+ } else if (base < ustart) {
+ usablemem_rgns.ranges[i].start = base;
+#ifdef DEBUG
+ fprintf(stderr, "usable memory rgn %u: new base:%llx new size:%llx",
+ i, base, usablemem_rgns.ranges[i].end - base);
+#endif
+ return;
+ } else if (end > uend){
+ usablemem_rgns.ranges[i].end = end;
+#ifdef DEBUG
+ fprintf(stderr, "usable memory rgn %u: new end:%llx, new size:%llx",
+ i, end, end - usablemem_rgns.ranges[i].start);
+#endif
+ return;
+ }
+ }
+ }
+ usablemem_rgns.ranges[usablemem_rgns.size].start = base;
+ usablemem_rgns.ranges[usablemem_rgns.size++].end = end;
+
+ dbgprintf("usable memory rgns size:%u base:%llx size:%llx\n",
+ usablemem_rgns.size, base, size);
+}
+
+int get_crash_kernel_load_range(uint64_t *start, uint64_t *end)
+{
+ unsigned long long value;
+
+ if (!get_devtree_value(DEVTREE_CRASHKERNEL_BASE, &value))
+ *start = be64_to_cpu(value);
+ else
+ return -1;
+
+ if (!get_devtree_value(DEVTREE_CRASHKERNEL_SIZE, &value))
+ *end = *start + be64_to_cpu(value) - 1;
+ else
+ return -1;
+
+ return 0;
+}
+
+int is_crashkernel_mem_reserved(void)
+{
+ int fd;
+
+ fd = open(DEVTREE_CRASHKERNEL_BASE, O_RDONLY);
+ if (fd < 0)
+ return 0;
+ close(fd);
+ return 1;
+}
+
+#if 0
+static int sort_regions(mem_rgns_t *rgn)
+{
+ int i, j;
+ unsigned long long tstart, tend;
+ for (i = 0; i < rgn->size; i++) {
+ for (j = 0; j < rgn->size - i - 1; j++) {
+ if (rgn->ranges[j].start > rgn->ranges[j+1].start) {
+ tstart = rgn->ranges[j].start;
+ tend = rgn->ranges[j].end;
+ rgn->ranges[j].start = rgn->ranges[j+1].start;
+ rgn->ranges[j].end = rgn->ranges[j+1].end;
+ rgn->ranges[j+1].start = tstart;
+ rgn->ranges[j+1].end = tend;
+ }
+ }
+ }
+ return 0;
+
+}
+#endif
+
diff --git a/kexec/arch/ppc64/crashdump-ppc64.h b/kexec/arch/ppc64/crashdump-ppc64.h
new file mode 100644
index 0000000..b0cba8a
--- /dev/null
+++ b/kexec/arch/ppc64/crashdump-ppc64.h
@@ -0,0 +1,51 @@
+#ifndef CRASHDUMP_PPC64_H
+#define CRASHDUMP_PPC64_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+struct kexec_info;
+int load_crashdump_segments(struct kexec_info *info, char *mod_cmdline,
+ uint64_t max_addr, unsigned long min_base);
+void add_usable_mem_rgns(unsigned long long base, unsigned long long size);
+
+#define PAGE_OFFSET 0xC000000000000000ULL
+#define KERNELBASE PAGE_OFFSET
+#define VMALLOCBASE 0xD000000000000000ULL
+
+#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET)
+#define MAXMEM (-(unsigned long)(KERNELBASE-VMALLOCBASE))
+
+#define COMMAND_LINE_SIZE 2048 /* from kernel */
+/* Backup Region, First 64K of System RAM. */
+#define BACKUP_SRC_START 0x0000
+#define BACKUP_SRC_END 0xffff
+#define BACKUP_SRC_SIZE (BACKUP_SRC_END - BACKUP_SRC_START + 1)
+
+#define KDUMP_BACKUP_LIMIT BACKUP_SRC_SIZE
+
+#define KERNEL_RUN_AT_ZERO_MAGIC 0x72756e30 /* "run0" */
+
+extern uint64_t crash_base;
+extern uint64_t crash_size;
+extern uint64_t memory_limit;
+extern unsigned int rtas_base;
+extern unsigned int rtas_size;
+extern uint64_t opal_base;
+extern uint64_t opal_size;
+
+/*
+ * In case of ibm,dynamic-memory-v2 property, this is the number of LMB
+ * sets where each set represents a group of sequential LMB entries. In
+ * case of ibm,dynamic-memory property, the number of LMB sets is nothing
+ * but the total number of LMB entries.
+ */
+extern unsigned int num_of_lmb_sets;
+extern unsigned int is_dyn_mem_v2;
+extern uint64_t lmb_size;
+
+#define LMB_ENTRY_SIZE 24
+#define DRCONF_ADDR (is_dyn_mem_v2 ? 4 : 0)
+#define DRCONF_FLAGS 20
+
+#endif /* CRASHDUMP_PPC64_H */
diff --git a/kexec/arch/ppc64/fdt.c b/kexec/arch/ppc64/fdt.c
new file mode 100644
index 0000000..8bc6d2d
--- /dev/null
+++ b/kexec/arch/ppc64/fdt.c
@@ -0,0 +1,78 @@
+/*
+ * ppc64 fdt fixups
+ *
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <arch/fdt.h>
+#include <libfdt.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+/*
+ * Let the kernel know it booted from kexec, as some things (e.g.
+ * secondary CPU release) may work differently.
+ */
+static int fixup_kexec_prop(void *fdt)
+{
+ int err, nodeoffset;
+
+ nodeoffset = fdt_subnode_offset(fdt, 0, "chosen");
+ if (nodeoffset < 0)
+ nodeoffset = fdt_add_subnode(fdt, 0, "chosen");
+ if (nodeoffset < 0) {
+ printf("%s: add /chosen %s\n", __func__,
+ fdt_strerror(nodeoffset));
+ return -1;
+ }
+
+ err = fdt_setprop(fdt, nodeoffset, "linux,booted-from-kexec",
+ NULL, 0);
+ if (err < 0) {
+ printf("%s: couldn't write linux,booted-from-kexec: %s\n",
+ __func__, fdt_strerror(err));
+ return -1;
+ }
+
+ return 0;
+}
+
+
+/*
+ * For now, assume that the added content fits in the file.
+ * This should be the case when flattening from /proc/device-tree,
+ * and when passing in a dtb, dtc can be told to add padding.
+ */
+int fixup_dt(char **fdt, off_t *size)
+{
+ int ret;
+
+ *size += 4096;
+ *fdt = realloc(*fdt, *size);
+ if (!*fdt) {
+ fprintf(stderr, "%s: out of memory\n", __func__);
+ return -1;
+ }
+
+ ret = fdt_open_into(*fdt, *fdt, *size);
+ if (ret < 0) {
+ fprintf(stderr, "%s: fdt_open_into: %s\n", __func__,
+ fdt_strerror(ret));
+ return -1;
+ }
+
+ ret = fixup_kexec_prop(*fdt);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
diff --git a/kexec/arch/ppc64/include/arch/fdt.h b/kexec/arch/ppc64/include/arch/fdt.h
new file mode 100644
index 0000000..b19f185
--- /dev/null
+++ b/kexec/arch/ppc64/include/arch/fdt.h
@@ -0,0 +1,8 @@
+#ifndef KEXEC_ARCH_PPC64_FDT
+#define KEXEC_ARCH_PPC64_FDT
+
+#include <sys/types.h>
+
+int fixup_dt(char **fdt, off_t *size);
+
+#endif
diff --git a/kexec/arch/ppc64/include/arch/options.h b/kexec/arch/ppc64/include/arch/options.h
new file mode 100644
index 0000000..2bca96a
--- /dev/null
+++ b/kexec/arch/ppc64/include/arch/options.h
@@ -0,0 +1,51 @@
+#ifndef KEXEC_ARCH_PPC64_OPTIONS_H
+#define KEXEC_ARCH_PPC64_OPTIONS_H
+
+#define OPT_ELF64_CORE (OPT_MAX+0)
+#define OPT_DT_NO_OLD_ROOT (OPT_MAX+1)
+#define OPT_ARCH_MAX (OPT_MAX+2)
+
+/* All 'local' loader options: */
+#define OPT_APPEND (OPT_ARCH_MAX+0)
+#define OPT_RAMDISK (OPT_ARCH_MAX+1)
+#define OPT_DEVICETREEBLOB (OPT_ARCH_MAX+2)
+#define OPT_ARGS_IGNORE (OPT_ARCH_MAX+3)
+#define OPT_REUSE_CMDLINE (OPT_ARCH_MAX+4)
+
+/* Options relevant to the architecture (excluding loader-specific ones): */
+#define KEXEC_ARCH_OPTIONS \
+ KEXEC_OPTIONS \
+ { "elf64-core-headers", 0, 0, OPT_ELF64_CORE }, \
+ { "dt-no-old-root", 0, 0, OPT_DT_NO_OLD_ROOT }, \
+
+#define KEXEC_ARCH_OPT_STR KEXEC_OPT_STR ""
+
+/* The following two #defines list ALL of the options added by all of the
+ * architecture's loaders.
+ * o main() uses this complete list to scan for its options, ignoring
+ * arch-specific/loader-specific ones.
+ * o Then, arch_process_options() uses this complete list to scan for its
+ * options, ignoring general/loader-specific ones.
+ * o Then, the file_type[n].load re-scans for options, using
+ * KEXEC_ARCH_OPTIONS plus its loader-specific options subset.
+ * Any unrecognised options cause an error here.
+ *
+ * This is done so that main()'s/arch_process_options()'s getopt_long() calls
+ * don't choose a kernel filename from random arguments to options they don't
+ * recognise -- as they now recognise (if not act upon) all possible options.
+ */
+#define KEXEC_ALL_OPTIONS \
+ KEXEC_ARCH_OPTIONS \
+ { "command-line", 1, NULL, OPT_APPEND }, \
+ { "append", 1, NULL, OPT_APPEND }, \
+ { "ramdisk", 1, NULL, OPT_RAMDISK }, \
+ { "initrd", 1, NULL, OPT_RAMDISK }, \
+ { "devicetreeblob", 1, NULL, OPT_DEVICETREEBLOB }, \
+ { "dtb", 1, NULL, OPT_DEVICETREEBLOB }, \
+ { "args-linux", 0, NULL, OPT_ARGS_IGNORE }, \
+ { "reuse-cmdline", 0, NULL, OPT_REUSE_CMDLINE },
+
+#define KEXEC_ALL_OPT_STR KEXEC_OPT_STR
+
+
+#endif /* KEXEC_ARCH_PPC64_OPTIONS_H */
diff --git a/kexec/arch/ppc64/kexec-elf-ppc64.c b/kexec/arch/ppc64/kexec-elf-ppc64.c
new file mode 100644
index 0000000..01d045f
--- /dev/null
+++ b/kexec/arch/ppc64/kexec-elf-ppc64.c
@@ -0,0 +1,496 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2004 Adam Litke (agl@us.ibm.com)
+ * Copyright (C) 2004 IBM Corp.
+ * Copyright (C) 2005 R Sharada (sharada@in.ibm.com)
+ * Copyright (C) 2006 Mohan Kumar M (mohan@in.ibm.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <linux/elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "kexec-ppc64.h"
+#include "../../fs2dt.h"
+#include "crashdump-ppc64.h"
+#include <libfdt.h>
+#include <arch/fdt.h>
+#include <arch/options.h>
+
+uint64_t initrd_base, initrd_size;
+unsigned char reuse_initrd = 0;
+const char *ramdisk;
+
+int elf_ppc64_probe(const char *buf, off_t len)
+{
+ struct mem_ehdr ehdr;
+ int result;
+ result = build_elf_exec_info(buf, len, &ehdr, 0);
+ if (result < 0) {
+ goto out;
+ }
+
+ /* Verify the architecuture specific bits */
+ if ((ehdr.e_machine != EM_PPC64) && (ehdr.e_machine != EM_PPC)) {
+ /* for a different architecture */
+ result = -1;
+ goto out;
+ }
+ result = 0;
+ out:
+ free_elf_info(&ehdr);
+ return result;
+}
+
+void arch_reuse_initrd(void)
+{
+ reuse_initrd = 1;
+}
+
+static int read_prop(char *name, void *value, size_t len)
+{
+ int fd;
+ size_t rlen;
+
+ fd = open(name, O_RDONLY);
+ if (fd == -1)
+ return -1;
+
+ rlen = read(fd, value, len);
+ if (rlen < 0)
+ fprintf(stderr, "Warning : Can't read %s : %s",
+ name, strerror(errno));
+ else if (rlen != len)
+ fprintf(stderr, "Warning : short read from %s", name);
+
+ close(fd);
+ return 0;
+}
+
+static int elf_ppc64_load_file(int argc, char **argv, struct kexec_info *info)
+{
+ int ret = 0;
+ char *cmdline, *dtb;
+ char *append_cmdline = NULL;
+ char *reuse_cmdline = NULL;
+ int opt, cmdline_len = 0;
+
+ /* See options.h -- add any more there, too. */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { "command-line", 1, NULL, OPT_APPEND },
+ { "append", 1, NULL, OPT_APPEND },
+ { "ramdisk", 1, NULL, OPT_RAMDISK },
+ { "initrd", 1, NULL, OPT_RAMDISK },
+ { "devicetreeblob", 1, NULL, OPT_DEVICETREEBLOB },
+ { "dtb", 1, NULL, OPT_DEVICETREEBLOB },
+ { "args-linux", 0, NULL, OPT_ARGS_IGNORE },
+ { "reuse-cmdline", 0, NULL, OPT_REUSE_CMDLINE},
+ { 0, 0, NULL, 0 },
+ };
+
+ static const char short_options[] = KEXEC_OPT_STR "";
+
+ /* Parse command line arguments */
+ cmdline = 0;
+ dtb = 0;
+ ramdisk = 0;
+
+ while ((opt = getopt_long(argc, argv, short_options,
+ options, 0)) != -1) {
+ switch (opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX)
+ break;
+ case OPT_APPEND:
+ append_cmdline = optarg;
+ break;
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+ case OPT_DEVICETREEBLOB:
+ dtb = optarg;
+ break;
+ case OPT_ARGS_IGNORE:
+ break;
+ case OPT_REUSE_CMDLINE:
+ reuse_cmdline = get_command_line();
+ break;
+ }
+ }
+
+ if (dtb)
+ die("--dtb not supported while using --kexec-file-syscall.\n");
+
+ if (reuse_initrd)
+ die("--reuseinitrd not supported with --kexec-file-syscall.\n");
+
+ cmdline = concat_cmdline(reuse_cmdline, append_cmdline);
+ if (!reuse_cmdline)
+ free(reuse_cmdline);
+
+ if (cmdline) {
+ cmdline_len = strlen(cmdline) + 1;
+ } else {
+ cmdline = strdup("\0");
+ cmdline_len = 1;
+ }
+
+ if (ramdisk) {
+ info->initrd_fd = open(ramdisk, O_RDONLY);
+ if (info->initrd_fd == -1) {
+ fprintf(stderr, "Could not open initrd file %s:%s\n",
+ ramdisk, strerror(errno));
+ ret = -1;
+ goto out;
+ }
+ }
+
+ info->command_line = cmdline;
+ info->command_line_len = cmdline_len;
+ return ret;
+out:
+ if (cmdline_len == 1)
+ free(cmdline);
+ return ret;
+}
+
+int elf_ppc64_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ struct mem_ehdr ehdr;
+ char *cmdline, *modified_cmdline = NULL;
+ char *reuse_cmdline = NULL;
+ char *append_cmdline = NULL;
+ const char *devicetreeblob;
+ uint64_t max_addr, hole_addr;
+ char *seg_buf = NULL;
+ off_t seg_size = 0;
+ struct mem_phdr *phdr;
+ size_t size;
+#ifdef NEED_RESERVE_DTB
+ uint64_t *rsvmap_ptr;
+ struct bootblock *bb_ptr;
+#endif
+ int result, opt;
+ uint64_t my_kernel, my_dt_offset;
+ uint64_t my_opal_base = 0, my_opal_entry = 0;
+ unsigned int my_panic_kernel;
+ uint64_t my_stack, my_backup_start;
+ uint64_t toc_addr;
+ uint32_t my_run_at_load;
+ unsigned int slave_code[256/sizeof (unsigned int)], master_entry;
+
+ /* See options.h -- add any more there, too. */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { "command-line", 1, NULL, OPT_APPEND },
+ { "append", 1, NULL, OPT_APPEND },
+ { "ramdisk", 1, NULL, OPT_RAMDISK },
+ { "initrd", 1, NULL, OPT_RAMDISK },
+ { "devicetreeblob", 1, NULL, OPT_DEVICETREEBLOB },
+ { "dtb", 1, NULL, OPT_DEVICETREEBLOB },
+ { "args-linux", 0, NULL, OPT_ARGS_IGNORE },
+ { "reuse-cmdline", 0, NULL, OPT_REUSE_CMDLINE},
+ { 0, 0, NULL, 0 },
+ };
+
+ static const char short_options[] = KEXEC_OPT_STR "";
+
+ if (info->file_mode)
+ return elf_ppc64_load_file(argc, argv, info);
+
+ /* Parse command line arguments */
+ initrd_base = 0;
+ initrd_size = 0;
+ cmdline = 0;
+ ramdisk = 0;
+ devicetreeblob = 0;
+ max_addr = 0xFFFFFFFFFFFFFFFFULL;
+ hole_addr = 0;
+
+ while ((opt = getopt_long(argc, argv, short_options,
+ options, 0)) != -1) {
+ switch (opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX)
+ break;
+ case OPT_APPEND:
+ append_cmdline = optarg;
+ break;
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+ case OPT_DEVICETREEBLOB:
+ devicetreeblob = optarg;
+ break;
+ case OPT_ARGS_IGNORE:
+ break;
+ case OPT_REUSE_CMDLINE:
+ reuse_cmdline = get_command_line();
+ break;
+ }
+ }
+
+ cmdline = concat_cmdline(reuse_cmdline, append_cmdline);
+ if (!reuse_cmdline)
+ free(reuse_cmdline);
+
+ if (!cmdline)
+ fprintf(stdout, "Warning: append= option is not passed. Using the first kernel root partition\n");
+
+ if (ramdisk && reuse_initrd)
+ die("Can't specify --ramdisk or --initrd with --reuseinitrd\n");
+
+ /* Need to append some command line parameters internally in case of
+ * taking crash dumps.
+ */
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ modified_cmdline = xmalloc(COMMAND_LINE_SIZE);
+ memset((void *)modified_cmdline, 0, COMMAND_LINE_SIZE);
+ if (cmdline) {
+ strncpy(modified_cmdline, cmdline, COMMAND_LINE_SIZE);
+ modified_cmdline[COMMAND_LINE_SIZE - 1] = '\0';
+ }
+ }
+
+ /* Parse the Elf file */
+ result = build_elf_exec_info(buf, len, &ehdr, 0);
+ if (result < 0) {
+ free_elf_info(&ehdr);
+ return result;
+ }
+
+ /* Load the Elf data. Physical load addresses in elf64 header do not
+ * show up correctly. Use user supplied address for now to patch the
+ * elf header
+ */
+
+ phdr = &ehdr.e_phdr[0];
+ size = phdr->p_filesz;
+ if (size > phdr->p_memsz)
+ size = phdr->p_memsz;
+
+ my_kernel = hole_addr = locate_hole(info, size, 0, 0, max_addr, 1);
+ ehdr.e_phdr[0].p_paddr = hole_addr;
+ result = elf_exec_load(&ehdr, info);
+ if (result < 0) {
+ free_elf_info(&ehdr);
+ return result;
+ }
+
+ /* If panic kernel is being loaded, additional segments need
+ * to be created.
+ */
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ result = load_crashdump_segments(info, modified_cmdline,
+ max_addr, 0);
+ if (result < 0)
+ return -1;
+ /* Use new command line. */
+ cmdline = modified_cmdline;
+ }
+
+ /* Add v2wrap to the current image */
+ elf_rel_build_load(info, &info->rhdr, purgatory,
+ purgatory_size, 0, max_addr, 1, 0);
+
+ /* Add a ram-disk to the current image
+ * Note: Add the ramdisk after elf_rel_build_load
+ */
+ if (ramdisk) {
+ if (devicetreeblob) {
+ fprintf(stderr,
+ "Can't use ramdisk with device tree blob input\n");
+ return -1;
+ }
+ seg_buf = slurp_file(ramdisk, &seg_size);
+ hole_addr = add_buffer(info, seg_buf, seg_size, seg_size,
+ 0, 0, max_addr, 1);
+ initrd_base = hole_addr;
+ initrd_size = seg_size;
+ } /* ramdisk */
+
+ if (devicetreeblob) {
+ /* Grab device tree from buffer */
+ seg_buf = slurp_file(devicetreeblob, &seg_size);
+ } else {
+ /* create from fs2dt */
+ create_flatten_tree(&seg_buf, &seg_size, cmdline);
+ }
+
+ result = fixup_dt(&seg_buf, &seg_size);
+ if (result < 0)
+ return result;
+
+ my_dt_offset = add_buffer(info, seg_buf, seg_size, seg_size,
+ 0, 0, max_addr, -1);
+
+#ifdef NEED_RESERVE_DTB
+ /* patch reserve map address for flattened device-tree
+ * find last entry (both 0) in the reserve mem list. Assume DT
+ * entry is before this one
+ */
+ bb_ptr = (struct bootblock *)(seg_buf);
+ rsvmap_ptr = (uint64_t *)(seg_buf + be32_to_cpu(bb_ptr->off_mem_rsvmap));
+ while (*rsvmap_ptr || *(rsvmap_ptr+1))
+ rsvmap_ptr += 2;
+ rsvmap_ptr -= 2;
+ *rsvmap_ptr = cpu_to_be64(my_dt_offset);
+ rsvmap_ptr++;
+ *rsvmap_ptr = cpu_to_be64((uint64_t)be32_to_cpu(bb_ptr->totalsize));
+#endif
+
+ if (read_prop("/proc/device-tree/ibm,opal/opal-base-address",
+ &my_opal_base, sizeof(my_opal_base)) == 0) {
+ my_opal_base = be64_to_cpu(my_opal_base);
+ elf_rel_set_symbol(&info->rhdr, "opal_base",
+ &my_opal_base, sizeof(my_opal_base));
+ }
+
+ if (read_prop("/proc/device-tree/ibm,opal/opal-entry-address",
+ &my_opal_entry, sizeof(my_opal_entry)) == 0) {
+ my_opal_entry = be64_to_cpu(my_opal_entry);
+ elf_rel_set_symbol(&info->rhdr, "opal_entry",
+ &my_opal_entry, sizeof(my_opal_entry));
+ }
+
+ /* Set kernel */
+ elf_rel_set_symbol(&info->rhdr, "kernel", &my_kernel, sizeof(my_kernel));
+
+ /* Set dt_offset */
+ elf_rel_set_symbol(&info->rhdr, "dt_offset", &my_dt_offset,
+ sizeof(my_dt_offset));
+
+ /* get slave code from new kernel, put in purgatory */
+ elf_rel_get_symbol(&info->rhdr, "purgatory_start", slave_code,
+ sizeof(slave_code));
+ master_entry = slave_code[0];
+ memcpy(slave_code, phdr->p_data, sizeof(slave_code));
+ slave_code[0] = master_entry;
+ elf_rel_set_symbol(&info->rhdr, "purgatory_start", slave_code,
+ sizeof(slave_code));
+
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ my_panic_kernel = 1;
+ /* Set panic flag */
+ elf_rel_set_symbol(&info->rhdr, "panic_kernel",
+ &my_panic_kernel, sizeof(my_panic_kernel));
+
+ /* Set backup address */
+ my_backup_start = info->backup_start;
+ elf_rel_set_symbol(&info->rhdr, "backup_start",
+ &my_backup_start, sizeof(my_backup_start));
+
+ /* Tell relocatable kernel to run at load address
+ * via word before slave code in purgatory
+ */
+
+ elf_rel_get_symbol(&info->rhdr, "run_at_load", &my_run_at_load,
+ sizeof(my_run_at_load));
+ if (my_run_at_load == KERNEL_RUN_AT_ZERO_MAGIC)
+ my_run_at_load = 1;
+ /* else it should be a fixed offset image */
+ elf_rel_set_symbol(&info->rhdr, "run_at_load", &my_run_at_load,
+ sizeof(my_run_at_load));
+ }
+
+ /* Set stack address */
+ my_stack = locate_hole(info, 16*1024, 0, 0, max_addr, 1);
+ my_stack += 16*1024;
+ elf_rel_set_symbol(&info->rhdr, "stack", &my_stack, sizeof(my_stack));
+
+ /* Set toc */
+ toc_addr = my_r2(&info->rhdr);
+ elf_rel_set_symbol(&info->rhdr, "my_toc", &toc_addr, sizeof(toc_addr));
+
+ /* Set debug */
+ elf_rel_set_symbol(&info->rhdr, "debug", &my_debug, sizeof(my_debug));
+
+ my_kernel = 0;
+ my_dt_offset = 0;
+ my_panic_kernel = 0;
+ my_backup_start = 0;
+ my_stack = 0;
+ toc_addr = 0;
+ my_run_at_load = 0;
+ my_debug = 0;
+ my_opal_base = 0;
+ my_opal_entry = 0;
+
+ elf_rel_get_symbol(&info->rhdr, "opal_base", &my_opal_base,
+ sizeof(my_opal_base));
+ elf_rel_get_symbol(&info->rhdr, "opal_entry", &my_opal_entry,
+ sizeof(my_opal_entry));
+ elf_rel_get_symbol(&info->rhdr, "kernel", &my_kernel, sizeof(my_kernel));
+ elf_rel_get_symbol(&info->rhdr, "dt_offset", &my_dt_offset,
+ sizeof(my_dt_offset));
+ elf_rel_get_symbol(&info->rhdr, "run_at_load", &my_run_at_load,
+ sizeof(my_run_at_load));
+ elf_rel_get_symbol(&info->rhdr, "panic_kernel", &my_panic_kernel,
+ sizeof(my_panic_kernel));
+ elf_rel_get_symbol(&info->rhdr, "backup_start", &my_backup_start,
+ sizeof(my_backup_start));
+ elf_rel_get_symbol(&info->rhdr, "stack", &my_stack, sizeof(my_stack));
+ elf_rel_get_symbol(&info->rhdr, "my_toc", &toc_addr,
+ sizeof(toc_addr));
+ elf_rel_get_symbol(&info->rhdr, "debug", &my_debug, sizeof(my_debug));
+
+ dbgprintf("info->entry is %p\n", info->entry);
+ dbgprintf("kernel is %llx\n", (unsigned long long)my_kernel);
+ dbgprintf("dt_offset is %llx\n",
+ (unsigned long long)my_dt_offset);
+ dbgprintf("run_at_load flag is %x\n", my_run_at_load);
+ dbgprintf("panic_kernel is %x\n", my_panic_kernel);
+ dbgprintf("backup_start is %llx\n",
+ (unsigned long long)my_backup_start);
+ dbgprintf("stack is %llx\n", (unsigned long long)my_stack);
+ dbgprintf("toc_addr is %llx\n", (unsigned long long)toc_addr);
+ dbgprintf("purgatory size is %zu\n", purgatory_size);
+ dbgprintf("debug is %d\n", my_debug);
+ dbgprintf("opal_base is %llx\n", (unsigned long long) my_opal_base);
+ dbgprintf("opal_entry is %llx\n", (unsigned long long) my_opal_entry);
+
+ return 0;
+}
+
+void elf_ppc64_usage(void)
+{
+ fprintf(stderr, " --command-line=<Command line> command line to append.\n");
+ fprintf(stderr, " --append=<Command line> same as --command-line.\n");
+ fprintf(stderr, " --ramdisk=<filename> Initial RAM disk.\n");
+ fprintf(stderr, " --initrd=<filename> same as --ramdisk.\n");
+ fprintf(stderr, " --devicetreeblob=<filename> Specify device tree blob file.\n");
+ fprintf(stderr, " ");
+ fprintf(stderr, "Not applicable while using --kexec-file-syscall.\n");
+ fprintf(stderr, " --reuse-cmdline Use kernel command line from running system.\n");
+ fprintf(stderr, " --dtb=<filename> same as --devicetreeblob.\n");
+
+ fprintf(stderr, "elf support is still broken\n");
+}
diff --git a/kexec/arch/ppc64/kexec-elf-rel-ppc64.c b/kexec/arch/ppc64/kexec-elf-rel-ppc64.c
new file mode 100644
index 0000000..51b1354
--- /dev/null
+++ b/kexec/arch/ppc64/kexec-elf-rel-ppc64.c
@@ -0,0 +1,204 @@
+#include <stdio.h>
+#include <elf.h>
+#include <string.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "kexec-ppc64.h"
+
+#if defined(_CALL_ELF) && _CALL_ELF == 2
+#define STO_PPC64_LOCAL_BIT 5
+#define STO_PPC64_LOCAL_MASK (7 << STO_PPC64_LOCAL_BIT)
+#define PPC64_LOCAL_ENTRY_OFFSET(other) \
+ (((1 << (((other) & STO_PPC64_LOCAL_MASK) >> STO_PPC64_LOCAL_BIT)) >> 2) << 2)
+
+static unsigned int local_entry_offset(struct mem_sym *sym)
+{
+ /* If this symbol has a local entry point, use it. */
+ return PPC64_LOCAL_ENTRY_OFFSET(sym->st_other);
+}
+#else
+static unsigned int local_entry_offset(struct mem_sym *UNUSED(sym))
+{
+ return 0;
+}
+#endif
+
+static struct mem_shdr *toc_section(const struct mem_ehdr *ehdr)
+{
+ struct mem_shdr *shdr, *shdr_end;
+ unsigned char *strtab;
+
+ strtab = (unsigned char *)ehdr->e_shdr[ehdr->e_shstrndx].sh_data;
+ shdr_end = &ehdr->e_shdr[ehdr->e_shnum];
+ for (shdr = ehdr->e_shdr; shdr != shdr_end; shdr++) {
+ if (shdr->sh_size &&
+ strcmp((char *)&strtab[shdr->sh_name], ".toc") == 0) {
+ return shdr;
+ }
+ }
+
+ return NULL;
+}
+
+int machine_verify_elf_rel(struct mem_ehdr *ehdr)
+{
+ struct mem_shdr *toc;
+
+ if (ehdr->ei_class != ELFCLASS64) {
+ return 0;
+ }
+ if (ehdr->e_machine != EM_PPC64) {
+ return 0;
+ }
+
+ /* Ensure .toc is sufficiently aligned. */
+ toc = toc_section(ehdr);
+ if (toc && toc->sh_addralign < 256)
+ toc->sh_addralign = 256;
+ return 1;
+}
+
+/* r2 is the TOC pointer: it actually points 0x8000 into the TOC (this
+ gives the value maximum span in an instruction which uses a signed
+ offset) */
+unsigned long my_r2(const struct mem_ehdr *ehdr)
+{
+ struct mem_shdr *shdr;
+
+ shdr = toc_section(ehdr);
+ if (!shdr) {
+ die("TOC reloc without a toc section?");
+ }
+
+ return shdr->sh_addr + 0x8000;
+}
+
+static void do_relative_toc(unsigned long value, uint16_t *location,
+ unsigned long mask, int complain_signed)
+{
+ if (complain_signed && (value + 0x8000 > 0xffff)) {
+ die("TOC16 relocation overflows (%lu)\n", value);
+ }
+
+ if ((~mask & 0xffff) & value) {
+ die("bad TOC16 relocation (%lu)\n", value);
+ }
+
+ *location = (*location & ~mask) | (value & mask);
+}
+
+void machine_apply_elf_rel(struct mem_ehdr *ehdr, struct mem_sym *sym,
+ unsigned long r_type, void *location, unsigned long address,
+ unsigned long value)
+{
+ switch(r_type) {
+ case R_PPC64_ADDR32:
+ /* Simply set it */
+ *(uint32_t *)location = value;
+ break;
+
+ case R_PPC64_ADDR64:
+ case R_PPC64_REL64:
+ /* Simply set it */
+ *(uint64_t *)location = value;
+ break;
+
+ case R_PPC64_REL32:
+ *(uint32_t *)location = value - (uint32_t)location;
+ break;
+
+ case R_PPC64_TOC:
+ *(uint64_t *)location = my_r2(ehdr);
+ break;
+
+ case R_PPC64_TOC16:
+ do_relative_toc(value - my_r2(ehdr), location, 0xffff, 1);
+ break;
+
+ case R_PPC64_TOC16_DS:
+ do_relative_toc(value - my_r2(ehdr), location, 0xfffc, 1);
+ break;
+
+ case R_PPC64_TOC16_LO:
+ do_relative_toc(value - my_r2(ehdr), location, 0xffff, 0);
+ break;
+
+ case R_PPC64_TOC16_LO_DS:
+ do_relative_toc(value - my_r2(ehdr), location, 0xfffc, 0);
+ break;
+
+ case R_PPC64_TOC16_HI:
+ do_relative_toc((value - my_r2(ehdr)) >> 16, location,
+ 0xffff, 0);
+ break;
+
+ case R_PPC64_TOC16_HA:
+ do_relative_toc((value - my_r2(ehdr) + 0x8000) >> 16, location,
+ 0xffff, 0);
+ break;
+
+ case R_PPC64_REL24:
+ value += local_entry_offset(sym);
+ /* Convert value to relative */
+ value -= address;
+ if (value + 0x2000000 > 0x3ffffff || (value & 3) != 0) {
+ die("REL24 %li out of range!\n", (long int)value);
+ }
+
+ /* Only replace bits 2 through 26 */
+ *(uint32_t *)location = (*(uint32_t *)location & ~0x03fffffc) |
+ (value & 0x03fffffc);
+ break;
+
+ case R_PPC64_ADDR16_LO:
+ *(uint16_t *)location = value & 0xffff;
+ break;
+
+ case R_PPC64_ADDR16_HI:
+ *(uint16_t *)location = (value >> 16) & 0xffff;
+ break;
+
+ case R_PPC64_ADDR16_HA:
+ *(uint16_t *)location = (((value + 0x8000) >> 16) & 0xffff);
+ break;
+
+ case R_PPC64_ADDR16_HIGHER:
+ *(uint16_t *)location = (((uint64_t)value >> 32) & 0xffff);
+ break;
+
+ case R_PPC64_ADDR16_HIGHEST:
+ *(uint16_t *)location = (((uint64_t)value >> 48) & 0xffff);
+ break;
+
+ /* R_PPC64_REL16_HA and R_PPC64_REL16_LO are handled to support
+ * ABIv2 r2 assignment based on r12 for PIC executable.
+ * Here address is know so replace
+ * 0: addis 2,12,.TOC.-0b@ha
+ * addi 2,2,.TOC.-0b@l
+ * by
+ * lis 2,.TOC.@ha
+ * addi 2,2,.TOC.@l
+ */
+ case R_PPC64_REL16_HA:
+ /* check that we are dealing with the addis 2,12 instruction */
+ if (((*(uint32_t*)location) & 0xffff0000) != 0x3c4c0000)
+ die("Unexpected instruction for R_PPC64_REL16_HA");
+ value += my_r2(ehdr);
+ /* replacing by lis 2 */
+ *(uint32_t *)location = 0x3c400000 + ((value >> 16) & 0xffff);
+ break;
+
+ case R_PPC64_REL16_LO:
+ /* check that we are dealing with the addi 2,2 instruction */
+ if (((*(uint32_t*)location) & 0xffff0000) != 0x38420000)
+ die("Unexpected instruction for R_PPC64_REL16_LO");
+
+ value += my_r2(ehdr) - 4;
+ *(uint16_t *)location = value & 0xffff;
+ break;
+
+ default:
+ die("Unknown rela relocation: %lu\n", r_type);
+ break;
+ }
+}
diff --git a/kexec/arch/ppc64/kexec-ppc64.c b/kexec/arch/ppc64/kexec-ppc64.c
new file mode 100644
index 0000000..611809f
--- /dev/null
+++ b/kexec/arch/ppc64/kexec-ppc64.c
@@ -0,0 +1,969 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2003-2005 Eric Biederman (ebiederm@xmission.com)
+ * Copyright (C) 2005 R Sharada (sharada@in.ibm.com), IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <getopt.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "kexec-ppc64.h"
+#include "../../fs2dt.h"
+#include "crashdump-ppc64.h"
+#include <arch/options.h>
+
+static struct memory_range *exclude_range = NULL;
+static struct memory_range *memory_range = NULL;
+static struct memory_range *base_memory_range = NULL;
+static uint64_t rma_top;
+uint64_t memory_max = 0;
+uint64_t memory_limit;
+static int nr_memory_ranges, nr_exclude_ranges;
+uint64_t crash_base, crash_size;
+unsigned int rtas_base, rtas_size;
+uint64_t opal_base, opal_size;
+int max_memory_ranges;
+
+static void cleanup_memory_ranges(void)
+{
+ if (memory_range)
+ free(memory_range);
+ if (base_memory_range)
+ free(base_memory_range);
+ if (exclude_range)
+ free(exclude_range);
+ if (usablemem_rgns.ranges)
+ free(usablemem_rgns.ranges);
+}
+
+/*
+ * Allocate memory for various data structures used to hold
+ * values of different memory ranges
+ */
+static int alloc_memory_ranges(void)
+{
+ int memory_range_len;
+
+ memory_range_len = sizeof(struct memory_range) * max_memory_ranges;
+
+ memory_range = (struct memory_range *) malloc(memory_range_len);
+ if (!memory_range)
+ return -1;
+
+ base_memory_range = (struct memory_range *) malloc(memory_range_len);
+ if (!base_memory_range)
+ goto err1;
+
+ exclude_range = (struct memory_range *) malloc(memory_range_len);
+ if (!exclude_range)
+ goto err1;
+
+ usablemem_rgns.ranges = (struct memory_range *)
+ malloc(memory_range_len);
+ if (!(usablemem_rgns.ranges))
+ goto err1;
+
+ memset(memory_range, 0, memory_range_len);
+ memset(base_memory_range, 0, memory_range_len);
+ memset(exclude_range, 0, memory_range_len);
+ memset(usablemem_rgns.ranges, 0, memory_range_len);
+ return 0;
+
+err1:
+ fprintf(stderr, "memory range structure allocation failure\n");
+ cleanup_memory_ranges();
+ return -1;
+
+}
+
+static int realloc_memory_ranges(void)
+{
+ size_t memory_range_len;
+
+ max_memory_ranges++;
+ memory_range_len = sizeof(struct memory_range) * max_memory_ranges;
+
+ memory_range = (struct memory_range *) realloc(memory_range, memory_range_len);
+ if (!memory_range)
+ goto err;
+
+ base_memory_range = (struct memory_range *) realloc(base_memory_range, memory_range_len);
+ if (!base_memory_range)
+ goto err;
+
+ exclude_range = (struct memory_range *) realloc(exclude_range, memory_range_len);
+ if (!exclude_range)
+ goto err;
+
+ usablemem_rgns.ranges = (struct memory_range *)
+ realloc(usablemem_rgns.ranges, memory_range_len);
+ if (!(usablemem_rgns.ranges))
+ goto err;
+
+ return 0;
+
+err:
+ fprintf(stderr, "memory range structure re-allocation failure\n");
+ return -1;
+}
+
+
+static void add_base_memory_range(uint64_t start, uint64_t end)
+{
+ base_memory_range[nr_memory_ranges].start = start;
+ base_memory_range[nr_memory_ranges].end = end;
+ base_memory_range[nr_memory_ranges].type = RANGE_RAM;
+ nr_memory_ranges++;
+ if (nr_memory_ranges >= max_memory_ranges)
+ realloc_memory_ranges();
+
+ dbgprintf("%016llx-%016llx : %x\n",
+ base_memory_range[nr_memory_ranges-1].start,
+ base_memory_range[nr_memory_ranges-1].end,
+ base_memory_range[nr_memory_ranges-1].type);
+}
+
+static int get_dyn_reconf_base_ranges(void)
+{
+ uint64_t start, end;
+ uint64_t size;
+ char fname[128], buf[32];
+ FILE *file;
+ unsigned int i;
+ int n;
+
+ strcpy(fname, "/proc/device-tree/");
+ strcat(fname, "ibm,dynamic-reconfiguration-memory/ibm,lmb-size");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ return -1;
+ }
+ if (fread(buf, 1, 8, file) != 8) {
+ perror(fname);
+ fclose(file);
+ return -1;
+ }
+ /*
+ * lmb_size, num_of_lmb_sets(global variables) are
+ * initialized once here.
+ */
+ size = lmb_size = be64_to_cpu(((uint64_t *)buf)[0]);
+ fclose(file);
+
+ strcpy(fname, "/proc/device-tree/");
+ strcat(fname,
+ "ibm,dynamic-reconfiguration-memory/ibm,dynamic-memory");
+ if ((file = fopen(fname, "r")) == NULL) {
+ strcat(fname, "-v2");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ return -1;
+ }
+
+ is_dyn_mem_v2 = 1;
+ }
+
+ /* first 4 bytes tell the number of lmb set entries */
+ if (fread(buf, 1, 4, file) != 4) {
+ perror(fname);
+ fclose(file);
+ return -1;
+ }
+ num_of_lmb_sets = be32_to_cpu(((unsigned int *)buf)[0]);
+
+ for (i = 0; i < num_of_lmb_sets; i++) {
+ if ((n = fread(buf, 1, LMB_ENTRY_SIZE, file)) < 0) {
+ perror(fname);
+ fclose(file);
+ return -1;
+ }
+ if (nr_memory_ranges >= max_memory_ranges) {
+ fclose(file);
+ return -1;
+ }
+
+ /*
+ * If the property is ibm,dynamic-memory-v2, the first 4 bytes
+ * tell the number of sequential LMBs in this entry.
+ */
+ if (is_dyn_mem_v2)
+ size = be32_to_cpu(((unsigned int *)buf)[0]) * lmb_size;
+
+ start = be64_to_cpu(*((uint64_t *)&buf[DRCONF_ADDR]));
+ end = start + size;
+ add_base_memory_range(start, end);
+ }
+ fclose(file);
+ return 0;
+}
+
+/* Sort the base ranges in memory - this is useful for ensuring that our
+ * ranges are in ascending order, even if device-tree read of memory nodes
+ * is done differently. Also, could be used for other range coalescing later
+ */
+static int sort_base_ranges(void)
+{
+ int i, j;
+ unsigned long long tstart, tend;
+
+ for (i = 0; i < nr_memory_ranges - 1; i++) {
+ for (j = 0; j < nr_memory_ranges - i - 1; j++) {
+ if (base_memory_range[j].start > base_memory_range[j+1].start) {
+ tstart = base_memory_range[j].start;
+ tend = base_memory_range[j].end;
+ base_memory_range[j].start = base_memory_range[j+1].start;
+ base_memory_range[j].end = base_memory_range[j+1].end;
+ base_memory_range[j+1].start = tstart;
+ base_memory_range[j+1].end = tend;
+ }
+ }
+ }
+ return 0;
+}
+
+/* Get base memory ranges */
+static int get_base_ranges(void)
+{
+ uint64_t start, end;
+ char device_tree[256] = "/proc/device-tree/";
+ char fname[256];
+ char buf[MAXBYTES];
+ DIR *dir, *dmem;
+ FILE *file;
+ struct dirent *dentry, *mentry;
+ int n;
+
+ if ((dir = opendir(device_tree)) == NULL) {
+ perror(device_tree);
+ return -1;
+ }
+ while ((dentry = readdir(dir)) != NULL) {
+ if (!strncmp(dentry->d_name,
+ "ibm,dynamic-reconfiguration-memory", 35)) {
+ get_dyn_reconf_base_ranges();
+ continue;
+ }
+ if (strncmp(dentry->d_name, "memory@", 7) &&
+ strcmp(dentry->d_name, "memory"))
+ continue;
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ if ((dmem = opendir(fname)) == NULL) {
+ perror(fname);
+ closedir(dir);
+ return -1;
+ }
+ while ((mentry = readdir(dmem)) != NULL) {
+ if (strcmp(mentry->d_name, "reg"))
+ continue;
+ strcat(fname, "/reg");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ closedir(dmem);
+ closedir(dir);
+ return -1;
+ }
+ if ((n = fread(buf, 1, MAXBYTES, file)) < 0) {
+ perror(fname);
+ fclose(file);
+ closedir(dmem);
+ closedir(dir);
+ return -1;
+ }
+ if (nr_memory_ranges >= max_memory_ranges) {
+ if (realloc_memory_ranges() < 0)
+ break;
+ }
+ start = be64_to_cpu(((uint64_t *)buf)[0]);
+ end = start + be64_to_cpu(((uint64_t *)buf)[1]);
+ add_base_memory_range(start, end);
+ fclose(file);
+ }
+ closedir(dmem);
+ }
+ closedir(dir);
+ sort_base_ranges();
+ memory_max = base_memory_range[nr_memory_ranges - 1].end;
+ dbgprintf("get base memory ranges:%d\n", nr_memory_ranges);
+
+ return 0;
+}
+
+/* Sort the exclude ranges in memory */
+static int sort_ranges(void)
+{
+ int i, j;
+ uint64_t tstart, tend;
+ for (i = 0; i < nr_exclude_ranges - 1; i++) {
+ for (j = 0; j < nr_exclude_ranges - i - 1; j++) {
+ if (exclude_range[j].start > exclude_range[j+1].start) {
+ tstart = exclude_range[j].start;
+ tend = exclude_range[j].end;
+ exclude_range[j].start = exclude_range[j+1].start;
+ exclude_range[j].end = exclude_range[j+1].end;
+ exclude_range[j+1].start = tstart;
+ exclude_range[j+1].end = tend;
+ }
+ }
+ }
+ return 0;
+}
+
+void scan_reserved_ranges(unsigned long kexec_flags, int *range_index)
+{
+ char fname[256], buf[16];
+ FILE *file;
+ int i = *range_index;
+
+ strcpy(fname, "/proc/device-tree/reserved-ranges");
+
+ file = fopen(fname, "r");
+ if (file == NULL) {
+ if (errno != ENOENT) {
+ perror(fname);
+ return;
+ }
+ errno = 0;
+ /* File not present. Non PowerKVM system. */
+ return;
+ }
+
+ /*
+ * Each reserved range is an (address,size) pair, 2 cells each,
+ * totalling 4 cells per range.
+ */
+ while (fread(buf, sizeof(uint64_t) * 2, 1, file) == 1) {
+ uint64_t base, size;
+
+ base = be64_to_cpu(((uint64_t *)buf)[0]);
+ size = be64_to_cpu(((uint64_t *)buf)[1]);
+
+ exclude_range[i].start = base;
+ exclude_range[i].end = base + size;
+ i++;
+ if (i >= max_memory_ranges)
+ realloc_memory_ranges();
+
+ reserve(base, size);
+ }
+ fclose(file);
+ *range_index = i;
+}
+
+/* Return 0 if fname/value valid, -1 otherwise */
+int get_devtree_value(const char *fname, unsigned long long *value)
+{
+ FILE *file;
+ char buf[MAXBYTES];
+ int n = -1;
+
+ if ((file = fopen(fname, "r"))) {
+ n = fread(buf, 1, MAXBYTES, file);
+ fclose(file);
+ }
+
+ if (n == sizeof(uint32_t))
+ *value = ((uint32_t *)buf)[0];
+ else if (n == sizeof(uint64_t))
+ *value = ((uint64_t *)buf)[0];
+ else {
+ fprintf(stderr, "%s node has invalid size: %d\n", fname, n);
+ return -1;
+ }
+
+ return 0;
+}
+
+/* Get devtree details and create exclude_range array
+ * Also create usablemem_ranges for KEXEC_ON_CRASH
+ */
+static int get_devtree_details(unsigned long kexec_flags)
+{
+ uint64_t rma_base = -1, base;
+ uint64_t tce_base;
+ unsigned int tce_size;
+ uint64_t htab_base, htab_size;
+ uint64_t kernel_end;
+ uint64_t initrd_start, initrd_end;
+ char buf[MAXBYTES];
+ char device_tree[256] = "/proc/device-tree/";
+ char fname[256];
+ DIR *dir, *cdir;
+ FILE *file;
+ struct dirent *dentry;
+ struct stat fstat;
+ int n, i = 0;
+
+ if ((dir = opendir(device_tree)) == NULL) {
+ perror(device_tree);
+ return -1;
+ }
+
+ scan_reserved_ranges(kexec_flags, &i);
+
+ while ((dentry = readdir(dir)) != NULL) {
+ if (strncmp(dentry->d_name, "chosen", 6) &&
+ strncmp(dentry->d_name, "memory@", 7) &&
+ strcmp(dentry->d_name, "memory") &&
+ strncmp(dentry->d_name, "pci@", 4) &&
+ strncmp(dentry->d_name, "rtas", 4) &&
+ strncmp(dentry->d_name, "ibm,opal", 8))
+ continue;
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ if ((cdir = opendir(fname)) == NULL) {
+ perror(fname);
+ goto error_opendir;
+ }
+
+ if (strncmp(dentry->d_name, "chosen", 6) == 0) {
+ strcat(fname, "/linux,kernel-end");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&kernel_end, sizeof(uint64_t), 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ kernel_end = be64_to_cpu(kernel_end);
+
+ /* Add kernel memory to exclude_range */
+ exclude_range[i].start = 0x0UL;
+ exclude_range[i].end = kernel_end;
+ i++;
+ if (i >= max_memory_ranges)
+ realloc_memory_ranges();
+
+ if (kexec_flags & KEXEC_ON_CRASH) {
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/linux,crashkernel-base");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&crash_base, sizeof(uint64_t), 1,
+ file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ crash_base = be64_to_cpu(crash_base);
+
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/linux,crashkernel-size");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&crash_size, sizeof(uint64_t), 1,
+ file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ crash_size = be64_to_cpu(crash_size);
+
+ if (crash_base > mem_min)
+ mem_min = crash_base;
+ if (crash_base + crash_size < mem_max)
+ mem_max = crash_base + crash_size;
+
+ add_usable_mem_rgns(0, crash_base + crash_size);
+ reserve(KDUMP_BACKUP_LIMIT, crash_base-KDUMP_BACKUP_LIMIT);
+ }
+ /*
+ * Read the first kernel's memory limit.
+ * If the first kernel is booted with mem= option then
+ * it would export "linux,memory-limit" file
+ * reflecting value for the same.
+ */
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/linux,memory-limit");
+ if ((file = fopen(fname, "r")) == NULL) {
+ if (errno != ENOENT) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ errno = 0;
+ /*
+ * File not present.
+ * fall through. On older kernel this file
+ * is not present.
+ */
+ } else {
+ if (fread(&memory_limit, sizeof(uint64_t), 1,
+ file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ memory_limit = be64_to_cpu(memory_limit);
+ }
+
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/linux,htab-base");
+ if ((file = fopen(fname, "r")) == NULL) {
+ closedir(cdir);
+ if (errno == ENOENT) {
+ /* Non LPAR */
+ errno = 0;
+ continue;
+ }
+ perror(fname);
+ goto error_opendir;
+ }
+ if (fread(&htab_base, sizeof(uint64_t), 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ htab_base = be64_to_cpu(htab_base);
+
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/linux,htab-size");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&htab_size, sizeof(uint64_t), 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ htab_size = be64_to_cpu(htab_size);
+
+ /* Add htab address to exclude_range - NON-LPAR only */
+ exclude_range[i].start = htab_base;
+ exclude_range[i].end = htab_base + htab_size;
+ i++;
+ if (i >= max_memory_ranges)
+ realloc_memory_ranges();
+
+ /* reserve the initrd_start and end locations. */
+ if (reuse_initrd) {
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/linux,initrd-start");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ /* check for 4 and 8 byte initrd offset sizes */
+ if (stat(fname, &fstat) != 0) {
+ perror(fname);
+ goto error_openfile;
+ }
+ if (fread(&initrd_start, fstat.st_size, 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ initrd_start = be64_to_cpu(initrd_start);
+ fclose(file);
+
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/linux,initrd-end");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ /* check for 4 and 8 byte initrd offset sizes */
+ if (stat(fname, &fstat) != 0) {
+ perror(fname);
+ goto error_openfile;
+ }
+ if (fread(&initrd_end, fstat.st_size, 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ initrd_end = be64_to_cpu(initrd_end);
+ fclose(file);
+
+ /* Add initrd address to exclude_range */
+ exclude_range[i].start = initrd_start;
+ exclude_range[i].end = initrd_end;
+ i++;
+ if (i >= max_memory_ranges)
+ realloc_memory_ranges();
+ }
+ } /* chosen */
+
+ if (strncmp(dentry->d_name, "rtas", 4) == 0) {
+ strcat(fname, "/linux,rtas-base");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&rtas_base, sizeof(unsigned int), 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ rtas_base = be32_to_cpu(rtas_base);
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/rtas-size");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&rtas_size, sizeof(unsigned int), 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ closedir(cdir);
+ rtas_size = be32_to_cpu(rtas_size);
+ /* Add rtas to exclude_range */
+ exclude_range[i].start = rtas_base;
+ exclude_range[i].end = rtas_base + rtas_size;
+ i++;
+ if (i >= max_memory_ranges)
+ realloc_memory_ranges();
+ if (kexec_flags & KEXEC_ON_CRASH)
+ add_usable_mem_rgns(rtas_base, rtas_size);
+ } /* rtas */
+
+ if (strncmp(dentry->d_name, "ibm,opal", 8) == 0) {
+ strcat(fname, "/opal-base-address");
+ file = fopen(fname, "r");
+ if (file == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&opal_base, sizeof(uint64_t), 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ opal_base = be64_to_cpu(opal_base);
+ fclose(file);
+
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/opal-runtime-size");
+ file = fopen(fname, "r");
+ if (file == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&opal_size, sizeof(uint64_t), 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ closedir(cdir);
+ opal_size = be64_to_cpu(opal_size);
+ /* Add OPAL to exclude_range */
+ exclude_range[i].start = opal_base;
+ exclude_range[i].end = opal_base + opal_size;
+ i++;
+ if (i >= max_memory_ranges)
+ realloc_memory_ranges();
+ if (kexec_flags & KEXEC_ON_CRASH)
+ add_usable_mem_rgns(opal_base, opal_size);
+ } /* ibm,opal */
+
+ if (!strncmp(dentry->d_name, "memory@", 7) ||
+ !strcmp(dentry->d_name, "memory")) {
+ strcat(fname, "/reg");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if ((n = fread(buf, 1, MAXBYTES, file)) < 0) {
+ perror(fname);
+ goto error_openfile;
+ }
+ base = be64_to_cpu(((uint64_t *)buf)[0]);
+ if (base < rma_base) {
+ rma_base = base;
+ rma_top = base + be64_to_cpu(((uint64_t *)buf)[1]);
+ }
+
+ fclose(file);
+ closedir(cdir);
+ } /* memory */
+
+ if (strncmp(dentry->d_name, "pci@", 4) == 0) {
+ strcat(fname, "/linux,tce-base");
+ if ((file = fopen(fname, "r")) == NULL) {
+ closedir(cdir);
+ if (errno == ENOENT) {
+ /* Non LPAR */
+ errno = 0;
+ continue;
+ }
+ perror(fname);
+ goto error_opendir;
+ }
+ if (fread(&tce_base, sizeof(uint64_t), 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ tce_base = be64_to_cpu(tce_base);
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/linux,tce-size");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&tce_size, sizeof(unsigned int), 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ tce_size = be32_to_cpu(tce_size);
+ /* Add tce to exclude_range - NON-LPAR only */
+ exclude_range[i].start = tce_base;
+ exclude_range[i].end = tce_base + tce_size;
+ i++;
+ if (i >= max_memory_ranges)
+ realloc_memory_ranges();
+ if (kexec_flags & KEXEC_ON_CRASH)
+ add_usable_mem_rgns(tce_base, tce_size);
+ closedir(cdir);
+ } /* pci */
+ }
+ closedir(dir);
+
+ nr_exclude_ranges = i;
+
+ sort_ranges();
+
+ int k;
+ for (k = 0; k < i; k++)
+ dbgprintf("exclude_range sorted exclude_range[%d] "
+ "start:%llx, end:%llx\n", k, exclude_range[k].start,
+ exclude_range[k].end);
+
+ return 0;
+
+error_openfile:
+ fclose(file);
+error_opencdir:
+ closedir(cdir);
+error_opendir:
+ closedir(dir);
+ return -1;
+}
+
+/* Setup a sorted list of memory ranges. */
+int setup_memory_ranges(unsigned long kexec_flags)
+{
+ int i, j = 0;
+
+ /* Get the base list of memory ranges from /proc/device-tree/memory
+ * nodes. Build list of ranges to be excluded from valid memory
+ */
+
+ if (get_base_ranges())
+ goto out;
+ if (get_devtree_details(kexec_flags))
+ goto out;
+
+ for (i = 0; i < nr_exclude_ranges; i++) {
+ /* If first exclude range does not start with 0, include the
+ * first hole of valid memory from 0 - exclude_range[0].start
+ */
+ if (i == 0) {
+ if (exclude_range[i].start != 0) {
+ memory_range[j].start = 0;
+ memory_range[j].end = exclude_range[i].start - 1;
+ memory_range[j].type = RANGE_RAM;
+ j++;
+ if (j >= max_memory_ranges)
+ realloc_memory_ranges();
+ }
+ } /* i == 0 */
+ /* If the last exclude range does not end at memory_max, include
+ * the last hole of valid memory from exclude_range[last].end -
+ * memory_max
+ */
+ if (i == nr_exclude_ranges - 1) {
+ if (exclude_range[i].end < memory_max) {
+ memory_range[j].start = exclude_range[i].end + 1;
+ memory_range[j].end = memory_max;
+ memory_range[j].type = RANGE_RAM;
+ j++;
+ if (j >= max_memory_ranges)
+ realloc_memory_ranges();
+ /* Limit the end to rma_top */
+ if (memory_range[j-1].start >= rma_top) {
+ j--;
+ break;
+ }
+ if ((memory_range[j-1].start < rma_top) &&
+ (memory_range[j-1].end >= rma_top)) {
+ memory_range[j-1].end = rma_top;
+ break;
+ }
+ continue;
+ }
+ } /* i == nr_exclude_ranges - 1 */
+ /* contiguous exclude ranges - skip */
+ if (exclude_range[i+1].start == exclude_range[i].end + 1)
+ continue;
+ memory_range[j].start = exclude_range[i].end + 1;
+ memory_range[j].end = exclude_range[i+1].start - 1;
+ memory_range[j].type = RANGE_RAM;
+ j++;
+ if (j >= max_memory_ranges)
+ realloc_memory_ranges();
+ /* Limit range to rma_top */
+ if (memory_range[j-1].start >= rma_top) {
+ j--;
+ break;
+ }
+ if ((memory_range[j-1].start < rma_top) &&
+ (memory_range[j-1].end >= rma_top)) {
+ memory_range[j-1].end = rma_top;
+ break;
+ }
+ }
+ nr_memory_ranges = j;
+
+ int k;
+ for (k = 0; k < j; k++)
+ dbgprintf("setup_memory_ranges memory_range[%d] "
+ "start:%llx, end:%llx\n", k, memory_range[k].start,
+ memory_range[k].end);
+ return 0;
+
+out:
+ cleanup_memory_ranges();
+ return -1;
+}
+
+/* Return a list of valid memory ranges */
+int get_memory_ranges(struct memory_range **range, int *ranges,
+ unsigned long kexec_flags)
+{
+ /* allocate memory_range dynamically */
+ max_memory_ranges = 1;
+
+ if (alloc_memory_ranges())
+ return -1;
+ if (setup_memory_ranges(kexec_flags))
+ return -1;
+
+ /*
+ * copy the memory here, another realloc_memory_ranges might
+ * corrupt the old memory
+ */
+ *range = calloc(sizeof(struct memory_range), nr_memory_ranges);
+ if (*range == NULL)
+ return -1;
+ memmove(*range, memory_range,
+ sizeof(struct memory_range) * nr_memory_ranges);
+
+ *ranges = nr_memory_ranges;
+ dbgprintf("get memory ranges:%d\n", nr_memory_ranges);
+ return 0;
+}
+
+struct file_type file_type[] = {
+ { "elf-ppc64", elf_ppc64_probe, elf_ppc64_load, elf_ppc64_usage },
+};
+int file_types = sizeof(file_type) / sizeof(file_type[0]);
+
+void arch_usage(void)
+{
+ fprintf(stderr, " --elf64-core-headers Prepare core headers in ELF64 format\n");
+ fprintf(stderr, " --dt-no-old-root Do not reuse old kernel root= param.\n" \
+ " while creating flatten device tree.\n");
+}
+
+struct arch_options_t arch_options = {
+ .core_header_type = CORE_TYPE_ELF64,
+};
+
+int arch_process_options(int argc, char **argv)
+{
+ /* We look for all options so getopt_long doesn't start reordering
+ * argv[] before file_type[n].load() gets a look in.
+ */
+ static const struct option options[] = {
+ KEXEC_ALL_OPTIONS
+ { 0, 0, NULL, 0 },
+ };
+ static const char short_options[] = KEXEC_ALL_OPT_STR;
+ int opt;
+
+ opterr = 0; /* Don't complain about unrecognized options here */
+ while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch(opt) {
+ default:
+ break;
+ case OPT_ELF64_CORE:
+ arch_options.core_header_type = CORE_TYPE_ELF64;
+ break;
+ case OPT_DT_NO_OLD_ROOT:
+ dt_no_old_root = 1;
+ break;
+ }
+ }
+ /* Reset getopt for the next pass; called in other source modules */
+ opterr = 1;
+ optind = 1;
+ return 0;
+}
+
+const struct arch_map_entry arches[] = {
+ /* We are running a 32-bit kexec-tools on 64-bit ppc64.
+ * So pass KEXEC_ARCH_PPC64 here
+ */
+ { "ppc64", KEXEC_ARCH_PPC64 },
+ { "ppc64le", KEXEC_ARCH_PPC64 },
+ { NULL, 0 },
+};
+
+int arch_compat_trampoline(struct kexec_info *UNUSED(info))
+{
+ return 0;
+}
+
+void arch_update_purgatory(struct kexec_info *UNUSED(info))
+{
+}
diff --git a/kexec/arch/ppc64/kexec-ppc64.h b/kexec/arch/ppc64/kexec-ppc64.h
new file mode 100644
index 0000000..434b4bf
--- /dev/null
+++ b/kexec/arch/ppc64/kexec-ppc64.h
@@ -0,0 +1,45 @@
+#ifndef KEXEC_PPC64_H
+#define KEXEC_PPC64_H
+
+#define PATH_LEN 256
+#define MAXBYTES 128
+#define MAX_LINE 160
+#define CORE_TYPE_ELF32 1
+#define CORE_TYPE_ELF64 2
+
+#define BOOT_BLOCK_VERSION 17
+#define BOOT_BLOCK_LAST_COMP_VERSION 17
+#if (BOOT_BLOCK_VERSION < 16)
+# define NEED_STRUCTURE_BLOCK_EXTRA_PAD
+#endif
+#define HAVE_DYNAMIC_MEMORY
+#define NEED_RESERVE_DTB
+
+extern int get_devtree_value(const char *fname, unsigned long long *pvalue);
+
+int setup_memory_ranges(unsigned long kexec_flags);
+
+int elf_ppc64_probe(const char *buf, off_t len);
+int elf_ppc64_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void elf_ppc64_usage(void);
+
+struct mem_ehdr;
+unsigned long my_r2(const struct mem_ehdr *ehdr);
+
+extern uint64_t initrd_base, initrd_size;
+extern int max_memory_ranges;
+extern unsigned char reuse_initrd;
+
+struct arch_options_t {
+ int core_header_type;
+};
+
+typedef struct mem_rgns {
+ unsigned int size;
+ struct memory_range *ranges;
+} mem_rgns_t;
+
+extern mem_rgns_t usablemem_rgns;
+
+#endif /* KEXEC_PPC64_H */
diff --git a/kexec/arch/ppc64/kexec-zImage-ppc64.c b/kexec/arch/ppc64/kexec-zImage-ppc64.c
new file mode 100644
index 0000000..e946205
--- /dev/null
+++ b/kexec/arch/ppc64/kexec-zImage-ppc64.c
@@ -0,0 +1,184 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2004 Adam Litke (agl@us.ibm.com)
+ * Copyright (C) 2004 IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <linux/elf.h>
+#include "../../kexec.h"
+
+#define MAX_HEADERS 32
+
+int zImage_ppc64_probe(FILE *file)
+{
+ Elf32_Ehdr elf;
+ int valid;
+
+ if (fseek(file, 0, SEEK_SET) < 0) {
+ fprintf(stderr, "seek error: %s\n",
+ strerror(errno));
+ return -1;
+ }
+ if (fread(&elf, sizeof(Elf32_Ehdr), 1, file) != 1) {
+ fprintf(stderr, "read error: %s\n",
+ strerror(errno));
+ return -1;
+ }
+
+ if (elf.e_machine == EM_PPC64) {
+ fprintf(stderr, "Elf64 not supported\n");
+ return -1;
+ }
+
+ valid = (elf.e_ident[EI_MAG0] == ELFMAG0 &&
+ elf.e_ident[EI_MAG1] == ELFMAG1 &&
+ elf.e_ident[EI_MAG2] == ELFMAG2 &&
+ elf.e_ident[EI_MAG3] == ELFMAG3 &&
+ elf.e_ident[EI_CLASS] == ELFCLASS32 &&
+ elf.e_ident[EI_DATA] == ELFDATA2MSB &&
+ elf.e_type == ET_EXEC &&
+ elf.e_machine == EM_PPC);
+
+ return valid ? 0 : -1;
+}
+
+int zImage_ppc64_load(FILE *file, int UNUSED(argc), char **UNUSED(argv),
+ void **ret_entry, struct kexec_segment **ret_segments,
+ int *ret_nr_segments)
+{
+ Elf32_Ehdr elf;
+ Elf32_Phdr *p, *ph;
+ struct kexec_segment *segment;
+ int i;
+ unsigned long memsize, filesize, offset, load_loc = 0;
+
+ /* Parse command line arguments */
+
+ /* Read in the Elf32 header */
+ if (fseek(file, 0, SEEK_SET) < 0) {
+ perror("seek error:");
+ return -1;
+ }
+ if (fread(&elf, sizeof(Elf32_Ehdr), 1, file) != 1) {
+ perror("read error: ");
+ return -1;
+ }
+ if (elf.e_phnum > MAX_HEADERS) {
+ fprintf(stderr,
+ "Only kernels with %i program headers are supported\n",
+ MAX_HEADERS);
+ return -1;
+ }
+
+ /* Read the section header */
+ ph = (Elf32_Phdr *)malloc(sizeof(Elf32_Phdr) * elf.e_phnum);
+ if (ph == 0) {
+ perror("malloc failed: ");
+ return -1;
+ }
+ if (fseek(file, elf.e_phoff, SEEK_SET) < 0) {
+ perror("seek failed: ");
+ free(ph);
+ return -1;
+ }
+ if (fread(ph, sizeof(Elf32_Phdr) * elf.e_phnum, 1, file) != 1) {
+ perror("read error: ");
+ free(ph);
+ return -1;
+ }
+
+ *ret_segments = malloc(elf.e_phnum * sizeof(struct kexec_segment));
+ if (*ret_segments == 0) {
+ fprintf(stderr, "malloc failed: %s\n",
+ strerror(errno));
+ free(ph);
+ return -1;
+ }
+ segment = ret_segments[0];
+
+ /* Scan through the program header */
+ memsize = filesize = offset = 0;
+ p = ph;
+ for (i = 0; i < elf.e_phnum; ++i, ++p) {
+ if (p->p_type != PT_LOAD || p->p_offset == 0)
+ continue;
+ if (memsize == 0) {
+ offset = p->p_offset;
+ memsize = p->p_memsz;
+ filesize = p->p_filesz;
+ load_loc = p->p_vaddr;
+ } else {
+ memsize = p->p_offset + p->p_memsz - offset;
+ filesize = p->p_offset + p->p_filesz - offset;
+ }
+ }
+ if (memsize == 0) {
+ fprintf(stderr, "Can't find a loadable segment.\n");
+ free(ph);
+ return -1;
+ }
+
+ /* Load program segments */
+ p = ph;
+ segment->buf = malloc(filesize);
+ if (segment->buf == 0) {
+ perror("malloc failed: ");
+ free(ph);
+ return -1;
+ }
+ for (i = 0; i < elf.e_phnum; ++i, ++p) {
+ unsigned long mem_offset;
+ if (p->p_type != PT_LOAD || p->p_offset == 0)
+ continue;
+
+ /* skip to the actual image */
+ if (fseek(file, p->p_offset, SEEK_SET) < 0) {
+ perror("seek error: ");
+ free(ph);
+ return -1;
+ }
+ mem_offset = p->p_vaddr - load_loc;
+ if (fread((void *)segment->buf+mem_offset, p->p_filesz, 1,
+ file) != 1) {
+ perror("read error: ");
+ free(ph);
+ return -1;
+ }
+ }
+ segment->mem = (void *) load_loc;
+ segment->memsz = memsize;
+ segment->bufsz = filesize;
+ *ret_entry = (void *)(uintptr_t)elf.e_entry;
+ *ret_nr_segments = i - 1;
+ free(ph);
+ return 0;
+}
+
+void zImage_ppc64_usage(void)
+{
+ fprintf(stderr, "zImage support is still broken\n");
+}
diff --git a/kexec/arch/s390/Makefile b/kexec/arch/s390/Makefile
new file mode 100644
index 0000000..fab3e68
--- /dev/null
+++ b/kexec/arch/s390/Makefile
@@ -0,0 +1,11 @@
+#
+# kexec s390 (linux booting linux)
+#
+s390_KEXEC_SRCS = kexec/arch/s390/kexec-s390.c
+s390_KEXEC_SRCS += kexec/arch/s390/kexec-image.c
+s390_KEXEC_SRCS += kexec/arch/s390/kexec-elf-rel-s390.c
+s390_KEXEC_SRCS += kexec/arch/s390/crashdump-s390.c
+
+dist += kexec/arch/s390/Makefile $(s390_KEXEC_SRCS) \
+ kexec/arch/s390/kexec-s390.h \
+ kexec/arch/s390/include/arch/options.h
diff --git a/kexec/arch/s390/crashdump-s390.c b/kexec/arch/s390/crashdump-s390.c
new file mode 100644
index 0000000..3bd9efe
--- /dev/null
+++ b/kexec/arch/s390/crashdump-s390.c
@@ -0,0 +1,90 @@
+/*
+ * kexec/arch/s390/crashdump-s390.c
+ *
+ * Copyright IBM Corp. 2011
+ *
+ * Author(s): Michael Holzheu <holzheu@linux.vnet.ibm.com>
+ */
+
+#ifdef __s390x__
+#define _GNU_SOURCE
+
+#include <stdio.h>
+#include <elf.h>
+#include <limits.h>
+#include <string.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "../../kexec/crashdump.h"
+#include "kexec-s390.h"
+
+/*
+ * Create ELF core header
+ */
+static int create_elf_header(struct kexec_info *info, unsigned long crash_base,
+ unsigned long crash_end)
+{
+#ifdef WITH_ELF_HEADER
+ static struct memory_range crash_memory_range[MAX_MEMORY_RANGES];
+ unsigned long elfcorehdr, elfcorehdr_size, bufsz;
+ struct crash_elf_info elf_info;
+ char str[COMMAND_LINESIZE];
+ int ranges;
+ void *tmp;
+
+ memset(&elf_info, 0, sizeof(elf_info));
+
+ elf_info.data = ELFDATA2MSB;
+ elf_info.machine = EM_S390;
+ elf_info.class = ELFCLASS64;
+ elf_info.get_note_info = get_crash_notes_per_cpu;
+
+ if (get_memory_ranges_s390(crash_memory_range, &ranges, 0))
+ return -1;
+
+ if (crash_create_elf64_headers(info, &elf_info, crash_memory_range,
+ ranges, &tmp, &bufsz,
+ ELF_CORE_HEADER_ALIGN))
+ return -1;
+
+ elfcorehdr = add_buffer(info, tmp, bufsz, bufsz, 1024,
+ crash_base, crash_end, -1);
+ elfcorehdr_size = bufsz;
+ snprintf(str, sizeof(str), " elfcorehdr=%ld@%ldK\n",
+ elfcorehdr_size, elfcorehdr / 1024);
+ if (command_line_add(info, str))
+ return -1;
+#endif
+ return 0;
+}
+
+/*
+ * Load additional segments for kdump kernel
+ */
+int load_crashdump_segments(struct kexec_info *info, unsigned long crash_base,
+ unsigned long crash_end)
+{
+ unsigned long crash_size = crash_size = crash_end - crash_base + 1;
+
+ if (create_elf_header(info, crash_base, crash_end))
+ return -1;
+ elf_rel_build_load(info, &info->rhdr, (const char *) purgatory,
+ purgatory_size, crash_base + 0x2000,
+ crash_base + 0x10000, -1, 0);
+ elf_rel_set_symbol(&info->rhdr, "crash_base", &crash_base,
+ sizeof(crash_base));
+ elf_rel_set_symbol(&info->rhdr, "crash_size", &crash_size,
+ sizeof(crash_size));
+ info->entry = (void *) elf_rel_get_addr(&info->rhdr, "purgatory_start");
+ return 0;
+}
+#else
+/*
+ * kdump is not available for s390
+ */
+int load_crashdump_segments(struct kexec_info *info, unsigned long crash_base,
+ unsigned long crash_end)
+{
+ return -1;
+}
+#endif
diff --git a/kexec/arch/s390/include/arch/options.h b/kexec/arch/s390/include/arch/options.h
new file mode 100644
index 0000000..c150244
--- /dev/null
+++ b/kexec/arch/s390/include/arch/options.h
@@ -0,0 +1,40 @@
+#ifndef KEXEC_ARCH_S390_OPTIONS_H
+#define KEXEC_ARCH_S390_OPTIONS_H
+
+#define OPT_ARCH_MAX (OPT_MAX+0)
+#define OPT_APPEND (OPT_MAX+0)
+#define OPT_RAMDISK (OPT_MAX+1)
+#define OPT_REUSE_CMDLINE (OPT_MAX+2)
+
+/* Options relevant to the architecture (excluding loader-specific ones),
+ * in this case none:
+ */
+#define KEXEC_ARCH_OPTIONS \
+ KEXEC_OPTIONS \
+
+#define KEXEC_ARCH_OPT_STR KEXEC_OPT_STR ""
+
+/* The following two #defines list ALL of the options added by all of the
+ * architecture's loaders.
+ * o main() uses this complete list to scan for its options, ignoring
+ * arch-specific/loader-specific ones.
+ * o Then, arch_process_options() uses this complete list to scan for its
+ * options, ignoring general/loader-specific ones.
+ * o Then, the file_type[n].load re-scans for options, using
+ * KEXEC_ARCH_OPTIONS plus its loader-specific options subset.
+ * Any unrecognised options cause an error here.
+ *
+ * This is done so that main()'s/arch_process_options()'s getopt_long() calls
+ * don't choose a kernel filename from random arguments to options they don't
+ * recognise -- as they now recognise (if not act upon) all possible options.
+ */
+#define KEXEC_ALL_OPTIONS \
+ KEXEC_ARCH_OPTIONS \
+ {"command-line", 1, 0, OPT_APPEND}, \
+ {"append", 1, 0, OPT_APPEND}, \
+ {"initrd", 1, 0, OPT_RAMDISK}, \
+ {"reuse-cmdline", 0, 0, OPT_REUSE_CMDLINE },
+
+#define KEXEC_ALL_OPT_STR KEXEC_ARCH_OPT_STR
+
+#endif /* KEXEC_ARCH_S390_OPTIONS_H */
diff --git a/kexec/arch/s390/kexec-elf-rel-s390.c b/kexec/arch/s390/kexec-elf-rel-s390.c
new file mode 100644
index 0000000..91ba86a
--- /dev/null
+++ b/kexec/arch/s390/kexec-elf-rel-s390.c
@@ -0,0 +1,78 @@
+/*
+ * kexec/arch/s390/kexec-elf-rel-s390.c
+ *
+ * Copyright IBM Corp. 2005,2011
+ *
+ * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
+ *
+ */
+
+#include <stdio.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+
+int machine_verify_elf_rel(struct mem_ehdr *ehdr)
+{
+ if (ehdr->ei_data != ELFDATA2MSB)
+ return 0;
+ if (ehdr->ei_class != ELFCLASS64)
+ return 0;
+ if (ehdr->e_machine != EM_S390)
+ return 0;
+ return 1;
+}
+
+void machine_apply_elf_rel(struct mem_ehdr *UNUSED(ehdr),
+ struct mem_sym *UNUSED(sym),
+ unsigned long r_type,
+ void *loc,
+ unsigned long address,
+ unsigned long val)
+{
+ switch (r_type) {
+ case R_390_8: /* Direct 8 bit. */
+ case R_390_12: /* Direct 12 bit. */
+ case R_390_16: /* Direct 16 bit. */
+ case R_390_20: /* Direct 20 bit. */
+ case R_390_32: /* Direct 32 bit. */
+ case R_390_64: /* Direct 64 bit. */
+ if (r_type == R_390_8)
+ *(unsigned char *) loc = val;
+ else if (r_type == R_390_12)
+ *(unsigned short *) loc = (val & 0xfff) |
+ (*(unsigned short *) loc & 0xf000);
+ else if (r_type == R_390_16)
+ *(unsigned short *) loc = val;
+ else if (r_type == R_390_20)
+ *(unsigned int *) loc =
+ (*(unsigned int *) loc & 0xf00000ff) |
+ (val & 0xfff) << 16 | (val & 0xff000) >> 4;
+ else if (r_type == R_390_32)
+ *(unsigned int *) loc = val;
+ else if (r_type == R_390_64)
+ *(unsigned long *) loc = val;
+ break;
+ case R_390_PC16: /* PC relative 16 bit. */
+ case R_390_PC16DBL: /* PC relative 16 bit shifted by 1. */
+ case R_390_PC32DBL: /* PC relative 32 bit shifted by 1. */
+ case R_390_PLT32DBL: /* 32 bit PC rel. PLT shifted by 1. */
+ case R_390_PC32: /* PC relative 32 bit. */
+ case R_390_PC64: /* PC relative 64 bit. */
+ val -= address;
+ if (r_type == R_390_PC16)
+ *(unsigned short *) loc = val;
+ else if (r_type == R_390_PC16DBL)
+ *(unsigned short *) loc = val >> 1;
+ else if (r_type == R_390_PC32DBL || r_type == R_390_PLT32DBL)
+ *(unsigned int *) loc = val >> 1;
+ else if (r_type == R_390_PC32)
+ *(unsigned int *) loc = val;
+ else if (r_type == R_390_PC64)
+ *(unsigned long *) loc = val;
+ break;
+ default:
+ die("Unknown rela relocation: 0x%lx 0x%lx\n", r_type, address);
+ break;
+ }
+}
diff --git a/kexec/arch/s390/kexec-image.c b/kexec/arch/s390/kexec-image.c
new file mode 100644
index 0000000..69aaf96
--- /dev/null
+++ b/kexec/arch/s390/kexec-image.c
@@ -0,0 +1,236 @@
+/*
+ * kexec/arch/s390/kexec-image.c
+ *
+ * (C) Copyright IBM Corp. 2005
+ *
+ * Author(s): Rolf Adelsberger <adelsberger@de.ibm.com>
+ * Heiko Carstens <heiko.carstens@de.ibm.com>
+ *
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <getopt.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "../../kexec/crashdump.h"
+#include "kexec-s390.h"
+#include <arch/options.h>
+#include <fcntl.h>
+
+static uint64_t crash_base, crash_end;
+
+static void add_segment_check(struct kexec_info *info, const void *buf,
+ size_t bufsz, unsigned long base, size_t memsz)
+{
+ if (info->kexec_flags & KEXEC_ON_CRASH)
+ if (base + memsz > crash_end - crash_base)
+ die("Not enough crashkernel memory to load segments\n");
+ add_segment(info, buf, bufsz, crash_base + base, memsz);
+}
+
+int command_line_add(struct kexec_info *info, const char *str)
+{
+ char *tmp = NULL;
+
+ tmp = concat_cmdline(info->command_line, str);
+ if (!tmp) {
+ fprintf(stderr, "out of memory\n");
+ return -1;
+ }
+
+ free(info->command_line);
+ info->command_line = tmp;
+ return 0;
+}
+
+int image_s390_load_file(int argc, char **argv, struct kexec_info *info)
+{
+ const char *ramdisk = NULL;
+ int opt;
+
+ static const struct option options[] =
+ {
+ KEXEC_ALL_OPTIONS
+ {0, 0, 0, 0},
+ };
+ static const char short_options[] = KEXEC_OPT_STR "";
+
+ while ((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch(opt) {
+ case OPT_APPEND:
+ if (command_line_add(info, optarg))
+ return -1;
+ break;
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+ case OPT_REUSE_CMDLINE:
+ free(info->command_line);
+ info->command_line = get_command_line();
+ break;
+ }
+ }
+
+ if (ramdisk) {
+ info->initrd_fd = open(ramdisk, O_RDONLY);
+ if (info->initrd_fd == -1) {
+ fprintf(stderr, "Could not open initrd file %s:%s\n",
+ ramdisk, strerror(errno));
+ free(info->command_line);
+ info->command_line = NULL;
+ return -1;
+ }
+ }
+
+ if (info->command_line)
+ info->command_line_len = strlen(info->command_line) + 1;
+ else
+ info->command_line_len = 0;
+ return 0;
+}
+
+int
+image_s390_load(int argc, char **argv, const char *kernel_buf,
+ off_t kernel_size, struct kexec_info *info)
+{
+ void *krnl_buffer;
+ char *rd_buffer;
+ const char *ramdisk;
+ off_t ramdisk_len;
+ unsigned int ramdisk_origin;
+ int opt, ret = -1;
+
+ if (info->file_mode)
+ return image_s390_load_file(argc, argv, info);
+
+ static const struct option options[] =
+ {
+ KEXEC_ALL_OPTIONS
+ {0, 0, 0, 0},
+ };
+ static const char short_options[] = KEXEC_OPT_STR "";
+
+ ramdisk = NULL;
+ ramdisk_len = 0;
+ ramdisk_origin = 0;
+
+ while ((opt = getopt_long(argc,argv,short_options,options,0)) != -1) {
+ switch(opt) {
+ case OPT_APPEND:
+ if (command_line_add(info, optarg))
+ return -1;
+ break;
+ case OPT_REUSE_CMDLINE:
+ free(info->command_line);
+ info->command_line = get_command_line();
+ break;
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+ }
+ }
+
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ if (parse_iomem_single("Crash kernel\n", &crash_base,
+ &crash_end))
+ goto out;
+ }
+
+ /* Add kernel segment */
+ add_segment_check(info, kernel_buf + IMAGE_READ_OFFSET,
+ kernel_size - IMAGE_READ_OFFSET, IMAGE_READ_OFFSET,
+ kernel_size - IMAGE_READ_OFFSET);
+
+ /* We do want to change the kernel image */
+ krnl_buffer = (void *) kernel_buf + IMAGE_READ_OFFSET;
+
+ /*
+ * Load ramdisk if present: If image is larger than RAMDISK_ORIGIN_ADDR,
+ * we load the ramdisk directly behind the image with 1 MiB alignment.
+ */
+ if (ramdisk) {
+ rd_buffer = slurp_file_mmap(ramdisk, &ramdisk_len);
+ if (rd_buffer == NULL) {
+ fprintf(stderr, "Could not read ramdisk.\n");
+ goto out;
+ }
+ ramdisk_origin = MAX(RAMDISK_ORIGIN_ADDR, kernel_size);
+ ramdisk_origin = _ALIGN_UP(ramdisk_origin, 0x100000);
+ add_segment_check(info, rd_buffer, ramdisk_len,
+ ramdisk_origin, ramdisk_len);
+ }
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ if (load_crashdump_segments(info, crash_base, crash_end))
+ goto out;
+ } else {
+ info->entry = (void *) IMAGE_READ_OFFSET;
+ }
+
+ /* Register the ramdisk and crashkernel memory in the kernel. */
+ {
+ unsigned long long *tmp;
+
+ tmp = krnl_buffer + INITRD_START_OFFS;
+ *tmp = (unsigned long long) ramdisk_origin;
+
+ tmp = krnl_buffer + INITRD_SIZE_OFFS;
+ *tmp = (unsigned long long) ramdisk_len;
+
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ tmp = krnl_buffer + OLDMEM_BASE_OFFS;
+ *tmp = crash_base;
+
+ tmp = krnl_buffer + OLDMEM_SIZE_OFFS;
+ *tmp = crash_end - crash_base + 1;
+ }
+ }
+
+ if (info->command_line) {
+ unsigned long maxsize;
+ char *dest = krnl_buffer + COMMAND_LINE_OFFS;
+
+ maxsize = *(unsigned long *)(krnl_buffer + MAX_COMMAND_LINESIZE_OFFS);
+ if (!maxsize)
+ maxsize = LEGACY_COMMAND_LINESIZE;
+
+ if (strlen(info->command_line) > maxsize-1) {
+ fprintf(stderr, "command line too long, maximum allowed size %ld\n",
+ maxsize-1);
+ goto out;
+ }
+ strncpy(dest, info->command_line, maxsize-1);
+ dest[maxsize-1] = '\0';
+ }
+ ret = 0;
+out:
+ free(info->command_line);
+ info->command_line = NULL;
+ return ret;
+}
+
+int
+image_s390_probe(const char *UNUSED(kernel_buf), off_t UNUSED(kernel_size))
+{
+ /*
+ * Can't reliably tell if an image is valid,
+ * therefore everything is valid.
+ */
+ return 0;
+}
+
+void
+image_s390_usage(void)
+{
+ printf("--command-line=STRING Set the kernel command line to STRING.\n"
+ "--append=STRING Set the kernel command line to STRING.\n"
+ "--initrd=FILENAME Use the file FILENAME as a ramdisk.\n"
+ "--reuse-cmdline Use kernel command line from running system.\n"
+ );
+}
diff --git a/kexec/arch/s390/kexec-s390.c b/kexec/arch/s390/kexec-s390.c
new file mode 100644
index 0000000..33ba6b9
--- /dev/null
+++ b/kexec/arch/s390/kexec-s390.c
@@ -0,0 +1,269 @@
+/*
+ * kexec/arch/s390/kexec-s390.c
+ *
+ * Copyright IBM Corp. 2005,2011
+ *
+ * Author(s): Rolf Adelsberger <adelsberger@de.ibm.com>
+ * Michael Holzheu <holzheu@linux.vnet.ibm.com>
+ *
+ */
+
+#define _GNU_SOURCE
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <getopt.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "kexec-s390.h"
+#include <arch/options.h>
+
+static struct memory_range memory_range[MAX_MEMORY_RANGES];
+
+/*
+ * Read string from file
+ */
+static void read_str(char *string, const char *path, size_t len)
+{
+ size_t rc;
+ FILE *fh;
+
+ fh = fopen(path, "rb");
+ if (fh == NULL)
+ die("Could not open \"%s\"", path);
+ rc = fread(string, 1, len - 1, fh);
+ if (rc == 0 && ferror(fh))
+ die("Could not read \"%s\"", path);
+ fclose(fh);
+ string[rc] = 0;
+ if (string[strlen(string) - 1] == '\n')
+ string[strlen(string) - 1] = 0;
+}
+
+/*
+ * Return number of memory chunks
+ */
+static int memory_range_cnt(struct memory_range chunks[])
+{
+ int i;
+
+ for (i = 0; i < MAX_MEMORY_RANGES; i++) {
+ if (chunks[i].end == 0)
+ break;
+ }
+ return i;
+}
+
+/*
+ * Create memory hole with given address and size
+ *
+ * lh = local hole
+ */
+static void add_mem_hole(struct memory_range chunks[], unsigned long addr,
+ unsigned long size)
+{
+ unsigned long lh_start, lh_end, lh_size, chunk_cnt;
+ int i;
+
+ chunk_cnt = memory_range_cnt(chunks);
+
+ for (i = 0; i < chunk_cnt; i++) {
+ if (addr + size <= chunks[i].start)
+ break;
+ if (addr > chunks[i].end)
+ continue;
+ lh_start = MAX(addr, chunks[i].start);
+ lh_end = MIN(addr + size - 1, chunks[i].end);
+ lh_size = lh_end - lh_start + 1;
+ if (lh_start == chunks[i].start && lh_end == chunks[i].end) {
+ /* Remove chunk */
+ memmove(&chunks[i], &chunks[i + 1],
+ sizeof(struct memory_range) *
+ (MAX_MEMORY_RANGES - (i + 1)));
+ memset(&chunks[MAX_MEMORY_RANGES - 1], 0,
+ sizeof(struct memory_range));
+ chunk_cnt--;
+ i--;
+ } else if (lh_start == chunks[i].start) {
+ /* Make chunk smaller at start */
+ chunks[i].start = chunks[i].start + lh_size;
+ break;
+ } else if (lh_end == chunks[i].end) {
+ /* Make chunk smaller at end */
+ chunks[i].end = lh_start - 1;
+ } else {
+ /* Split chunk into two */
+ if (chunk_cnt >= MAX_MEMORY_RANGES)
+ die("Unable to create memory hole: %i", i);
+ memmove(&chunks[i + 1], &chunks[i],
+ sizeof(struct memory_range) *
+ (MAX_MEMORY_RANGES - (i + 1)));
+ chunks[i + 1].start = lh_start + lh_size;
+ chunks[i].end = lh_start - 1;
+ break;
+ }
+ }
+}
+
+/*
+ * Remove offline memory from memory chunks
+ */
+static void remove_offline_memory(struct memory_range memory_range[])
+{
+ unsigned long block_size, chunk_nr;
+ struct dirent *dirent;
+ char path[PATH_MAX];
+ char str[64];
+ DIR *dir;
+
+ read_str(str, "/sys/devices/system/memory/block_size_bytes",
+ sizeof(str));
+ sscanf(str, "%lx", &block_size);
+
+ dir = opendir("/sys/devices/system/memory");
+ if (!dir)
+ die("Could not read \"/sys/devices/system/memory\"");
+ while ((dirent = readdir(dir))) {
+ if (sscanf(dirent->d_name, "memory%ld\n", &chunk_nr) != 1)
+ continue;
+ sprintf(path, "/sys/devices/system/memory/%s/state",
+ dirent->d_name);
+ read_str(str, path, sizeof(str));
+ if (strncmp(str, "offline", 6) != 0)
+ continue;
+ add_mem_hole(memory_range, chunk_nr * block_size, block_size);
+ }
+ closedir(dir);
+}
+
+/*
+ * Get memory ranges of type "System RAM" from /proc/iomem. If with_crashk=1
+ * then also type "Crash kernel" is added.
+ */
+int get_memory_ranges_s390(struct memory_range memory_range[], int *ranges,
+ int with_crashk)
+{
+ char crash_kernel[] = "Crash kernel\n";
+ char sys_ram[] = "System RAM\n";
+ const char *iomem = proc_iomem();
+ FILE *fp;
+ char line[80];
+ int current_range = 0;
+
+ fp = fopen(iomem,"r");
+ if(fp == 0) {
+ fprintf(stderr,"Unable to open %s: %s\n",iomem,strerror(errno));
+ return -1;
+ }
+
+ /* Setup the compare string properly. */
+ while (fgets(line, sizeof(line), fp) != 0) {
+ unsigned long long start, end;
+ int cons;
+ char *str;
+
+ if (current_range == MAX_MEMORY_RANGES)
+ break;
+
+ sscanf(line,"%llx-%llx : %n", &start, &end, &cons);
+ str = line+cons;
+ if ((memcmp(str, sys_ram, strlen(sys_ram)) == 0) ||
+ ((memcmp(str, crash_kernel, strlen(crash_kernel)) == 0) &&
+ with_crashk)) {
+ memory_range[current_range].start = start;
+ memory_range[current_range].end = end;
+ memory_range[current_range].type = RANGE_RAM;
+ current_range++;
+ }
+ else {
+ continue;
+ }
+ }
+ fclose(fp);
+ remove_offline_memory(memory_range);
+ *ranges = memory_range_cnt(memory_range);
+ return 0;
+}
+
+/*
+ * get_memory_ranges:
+ * Return a list of memory ranges by parsing the file returned by
+ * proc_iomem()
+ *
+ * INPUT:
+ * - Pointer to an array of memory_range structures.
+ * - Pointer to an integer with holds the number of memory ranges.
+ *
+ * RETURN:
+ * - 0 on normal execution.
+ * - (-1) if something went wrong.
+ */
+
+int get_memory_ranges(struct memory_range **range, int *ranges,
+ unsigned long flags)
+{
+ uint64_t start, end;
+
+ if (get_memory_ranges_s390(memory_range, ranges,
+ flags & KEXEC_ON_CRASH))
+ return -1;
+ *range = memory_range;
+ if ((flags & KEXEC_ON_CRASH) && !(flags & KEXEC_PRESERVE_CONTEXT)) {
+ if (parse_iomem_single("Crash kernel\n", &start, &end))
+ return -1;
+ if (start > mem_min)
+ mem_min = start;
+ if (end < mem_max)
+ mem_max = end;
+ }
+ return 0;
+}
+
+/* Supported file types and callbacks */
+struct file_type file_type[] = {
+ { "image", image_s390_probe, image_s390_load, image_s390_usage},
+};
+int file_types = sizeof(file_type) / sizeof(file_type[0]);
+
+
+void arch_usage(void)
+{
+}
+
+int arch_process_options(int UNUSED(argc), char **UNUSED(argv))
+{
+ return 0;
+}
+
+const struct arch_map_entry arches[] = {
+ { "s390", KEXEC_ARCH_S390 },
+ { "s390x", KEXEC_ARCH_S390 },
+ { NULL, 0 },
+};
+
+int arch_compat_trampoline(struct kexec_info *UNUSED(info))
+{
+ return 0;
+}
+
+void arch_update_purgatory(struct kexec_info *UNUSED(info))
+{
+}
+
+int is_crashkernel_mem_reserved(void)
+{
+ uint64_t start, end;
+
+ return parse_iomem_single("Crash kernel\n", &start, &end) == 0 ?
+ (start != end) : 0;
+}
+
+int get_crash_kernel_load_range(uint64_t *start, uint64_t *end)
+{
+ return parse_iomem_single("Crash kernel\n", start, end);
+}
diff --git a/kexec/arch/s390/kexec-s390.h b/kexec/arch/s390/kexec-s390.h
new file mode 100644
index 0000000..6a99518
--- /dev/null
+++ b/kexec/arch/s390/kexec-s390.h
@@ -0,0 +1,38 @@
+/*
+ * kexec/arch/s390/kexec-s390.h
+ *
+ * (C) Copyright IBM Corp. 2005
+ *
+ * Author(s): Rolf Adelsberger <adelsberger@de.ibm.com>
+ *
+ */
+
+#ifndef KEXEC_S390_H
+#define KEXEC_S390_H
+
+#define IMAGE_READ_OFFSET 0x10000
+
+#define RAMDISK_ORIGIN_ADDR 0x800000
+#define INITRD_START_OFFS 0x408
+#define INITRD_SIZE_OFFS 0x410
+#define OLDMEM_BASE_OFFS 0x418
+#define OLDMEM_SIZE_OFFS 0x420
+#define MAX_COMMAND_LINESIZE_OFFS 0x430
+#define COMMAND_LINE_OFFS 0x480
+#define LEGACY_COMMAND_LINESIZE 896
+#define MAX_MEMORY_RANGES 1024
+
+#define MAX(x, y) ((x) > (y) ? (x) : (y))
+#define MIN(x, y) ((x) < (y) ? (x) : (y))
+
+extern int image_s390_load(int, char **, const char *, off_t, struct kexec_info *);
+extern int image_s390_probe(const char *, off_t);
+extern void image_s390_usage(void);
+extern int load_crashdump_segments(struct kexec_info *info,
+ unsigned long crash_base,
+ unsigned long crash_end);
+extern int get_memory_ranges_s390(struct memory_range range[], int *ranges,
+ int with_crashk);
+extern int command_line_add(struct kexec_info *info, const char *str);
+
+#endif /* KEXEC_S390_H */
diff --git a/kexec/arch/sh/Makefile b/kexec/arch/sh/Makefile
new file mode 100644
index 0000000..7cf40ae
--- /dev/null
+++ b/kexec/arch/sh/Makefile
@@ -0,0 +1,22 @@
+#
+# kexec sh (linux booting linux)
+#
+sh_KEXEC_SRCS += kexec/arch/sh/kexec-sh.c
+sh_KEXEC_SRCS += kexec/arch/sh/kexec-uImage-sh.c
+sh_KEXEC_SRCS += kexec/arch/sh/kexec-zImage-sh.c
+sh_KEXEC_SRCS += kexec/arch/sh/kexec-netbsd-sh.c
+sh_KEXEC_SRCS += kexec/arch/sh/kexec-elf-sh.c
+sh_KEXEC_SRCS += kexec/arch/sh/kexec-elf-rel-sh.c
+sh_KEXEC_SRCS += kexec/arch/sh/netbsd_booter.S
+sh_KEXEC_SRCS += kexec/arch/sh/crashdump-sh.c
+
+sh_UIMAGE = kexec/kexec-uImage.c
+
+sh_ADD_BUFFER =
+sh_ADD_SEGMENT =
+sh_VIRT_TO_PHYS =
+
+dist += kexec/arch/sh/Makefile $(sh_KEXEC_SRCS) \
+ kexec/arch/sh/kexec-sh.h \
+ kexec/arch/sh/crashdump-sh.h \
+ kexec/arch/sh/include/arch/options.h
diff --git a/kexec/arch/sh/crashdump-sh.c b/kexec/arch/sh/crashdump-sh.c
new file mode 100644
index 0000000..36e9aaf
--- /dev/null
+++ b/kexec/arch/sh/crashdump-sh.c
@@ -0,0 +1,166 @@
+/*
+ * crashdump-sh.c - crashdump for SuperH
+ * Copyright (C) 2008 Magnus Damm
+ *
+ * Based on x86 and ppc64 implementation, written by
+ * Vivek Goyal (vgoyal@in.ibm.com), R Sharada (sharada@in.ibm.com)
+ * Copyright (C) IBM Corporation, 2005. All rights reserved
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+#define _GNU_SOURCE
+#include <stddef.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <getopt.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-elf-boot.h"
+#include "../../kexec-syscall.h"
+#include "../../crashdump.h"
+#include "kexec-sh.h"
+#include "crashdump-sh.h"
+#include <arch/options.h>
+
+#define CRASH_MAX_MEMORY_RANGES 64
+static struct memory_range crash_memory_range[CRASH_MAX_MEMORY_RANGES];
+
+static int crash_sh_range_nr;
+static int crash_sh_memory_range_callback(void *UNUSED(data), int UNUSED(nr),
+ char *str,
+ unsigned long long base,
+ unsigned long long length)
+{
+
+ struct memory_range *range = crash_memory_range;
+ struct memory_range *range2 = crash_memory_range;
+
+ range += crash_sh_range_nr;
+
+ if (crash_sh_range_nr >= CRASH_MAX_MEMORY_RANGES) {
+ return 1;
+ }
+
+ if (strncmp(str, "System RAM\n", 11) == 0) {
+ range->start = base;
+ range->end = base + length - 1;
+ range->type = RANGE_RAM;
+ crash_sh_range_nr++;
+ }
+
+ if (strncmp(str, "Crash kernel\n", 13) == 0) {
+ if (!crash_sh_range_nr)
+ die("Unsupported /proc/iomem format\n");
+
+ range2 = range - 1;
+ if ((base + length - 1) < range2->end) {
+ range->start = base + length;
+ range->end = range2->end;
+ range->type = RANGE_RAM;
+ crash_sh_range_nr++;
+ }
+ range2->end = base - 1;
+ }
+
+ return 0;
+}
+
+/* Return a sorted list of available memory ranges. */
+static int crash_get_memory_ranges(struct memory_range **range, int *ranges)
+{
+ crash_sh_range_nr = 0;
+
+ kexec_iomem_for_each_line(NULL, crash_sh_memory_range_callback, NULL);
+ *range = crash_memory_range;
+ *ranges = crash_sh_range_nr;
+ return 0;
+}
+
+static struct crash_elf_info elf_info32 =
+{
+ class: ELFCLASS32,
+ data: ELFDATA2LSB,
+ machine: EM_SH,
+ page_offset: PAGE_OFFSET,
+};
+
+static int add_cmdline_param(char *cmdline, uint64_t addr, char *cmdstr,
+ char *byte)
+{
+ int cmdlen, len, align = 1024;
+ char str[COMMAND_LINE_SIZE], *ptr;
+
+ /* Passing in =xxxK / =xxxM format. Saves space required in cmdline.*/
+ switch (byte[0]) {
+ case 'K':
+ if (addr%align)
+ return -1;
+ addr = addr/align;
+ break;
+ case 'M':
+ addr = addr/(align *align);
+ break;
+ }
+ ptr = str;
+ strcpy(str, cmdstr);
+ ptr += strlen(str);
+ ultoa(addr, ptr);
+ strcat(str, byte);
+ len = strlen(str);
+ cmdlen = strlen(cmdline) + len;
+ if (cmdlen > (COMMAND_LINE_SIZE - 1))
+ die("Command line overflow\n");
+ strcat(cmdline, str);
+
+ dbgprintf("Command line after adding elfcorehdr: %s\n", cmdline);
+
+ return 0;
+}
+
+/* Loads additional segments in case of a panic kernel is being loaded.
+ * One segment for storing elf headers for crash memory image.
+ */
+int load_crashdump_segments(struct kexec_info *info, char* mod_cmdline)
+{
+ void *tmp;
+ unsigned long sz, elfcorehdr;
+ int nr_ranges;
+ struct memory_range *mem_range;
+
+ if (crash_get_memory_ranges(&mem_range, &nr_ranges) < 0)
+ return -1;
+
+ if (crash_create_elf32_headers(info, &elf_info32,
+ mem_range, nr_ranges,
+ &tmp, &sz,
+ ELF_CORE_HEADER_ALIGN) < 0)
+ return -1;
+
+ elfcorehdr = add_buffer_phys_virt(info, tmp, sz, sz, 1024,
+ 0, 0xffffffff, -1, 0);
+
+ dbgprintf("Created elf header segment at 0x%lx\n", elfcorehdr);
+ add_cmdline_param(mod_cmdline, elfcorehdr, " elfcorehdr=", "K");
+ add_cmdline_param(mod_cmdline, elfcorehdr - mem_min, " mem=", "K");
+
+ return 0;
+}
+
+int is_crashkernel_mem_reserved(void)
+{
+ uint64_t start, end;
+
+ return parse_iomem_single("Crash kernel\n", &start, &end) == 0 ?
+ (start != end) : 0;
+}
+
+int get_crash_kernel_load_range(uint64_t *start, uint64_t *end)
+{
+ return parse_iomem_single("Crash kernel\n", start, end);
+}
diff --git a/kexec/arch/sh/crashdump-sh.h b/kexec/arch/sh/crashdump-sh.h
new file mode 100644
index 0000000..c5d4102
--- /dev/null
+++ b/kexec/arch/sh/crashdump-sh.h
@@ -0,0 +1,9 @@
+#ifndef CRASHDUMP_SH_H
+#define CRASHDUMP_SH_H
+
+struct kexec_info;
+int load_crashdump_segments(struct kexec_info *info, char* mod_cmdline);
+
+#define PAGE_OFFSET 0x80000000
+
+#endif /* CRASHDUMP_SH_H */
diff --git a/kexec/arch/sh/include/arch/options.h b/kexec/arch/sh/include/arch/options.h
new file mode 100644
index 0000000..f923eb4
--- /dev/null
+++ b/kexec/arch/sh/include/arch/options.h
@@ -0,0 +1,42 @@
+#ifndef KEXEC_ARCH_SH_OPTIONS_H
+#define KEXEC_ARCH_SH_OPTIONS_H
+
+#define OPT_ARCH_MAX (OPT_MAX+0)
+#define OPT_APPEND (OPT_ARCH_MAX+1)
+#define OPT_EMPTYZERO (OPT_ARCH_MAX+2)
+#define OPT_NBSD_HOWTO (OPT_ARCH_MAX+3)
+#define OPT_NBSD_MROOT (OPT_ARCH_MAX+4)
+
+/* Options relevant to the architecture (excluding loader-specific ones): */
+#define KEXEC_ARCH_OPTIONS \
+ KEXEC_OPTIONS \
+ {"command-line", 1, 0, OPT_APPEND}, \
+ {"append", 1, 0, OPT_APPEND}, \
+ {"empty-zero", 1, 0, OPT_APPEND}, \
+ {"howto", 1, 0, OPT_NBSD_HOWTO}, \
+ {"miniroot", 1, 0, OPT_NBSD_MROOT},
+/* These options seem to be loader-specific rather than superh-specific, so
+ * ought to be moved to KEXEC_ALL_OPTIONS below and parsed in the relevant
+ * loader, e.g. kexec-netbsd-sh.c
+ */
+
+#define KEXEC_ARCH_OPT_STR KEXEC_OPT_STR ""
+
+/* The following two #defines list ALL of the options added by all of the
+ * architecture's loaders.
+ * o main() uses this complete list to scan for its options, ignoring
+ * arch-specific/loader-specific ones.
+ * o Then, arch_process_options() uses this complete list to scan for its
+ * options, ignoring general/loader-specific ones.
+ * o Then, the file_type[n].load re-scans for options, using
+ * KEXEC_ARCH_OPTIONS plus its loader-specific options subset.
+ * Any unrecognised options cause an error here.
+ *
+ * This is done so that main()'s/arch_process_options()'s getopt_long() calls
+ * don't choose a kernel filename from random arguments to options they don't
+ * recognise -- as they now recognise (if not act upon) all possible options.
+ */
+#define KEXEC_ALL_OPTIONS KEXEC_ARCH_OPTIONS
+#define KEXEC_ALL_OPT_STR KEXEC_ARCH_OPT_STR
+
+#endif /* KEXEC_ARCH_SH_OPTIONS_H */
diff --git a/kexec/arch/sh/kexec-elf-rel-sh.c b/kexec/arch/sh/kexec-elf-rel-sh.c
new file mode 100644
index 0000000..3993ee8
--- /dev/null
+++ b/kexec/arch/sh/kexec-elf-rel-sh.c
@@ -0,0 +1,54 @@
+/*
+ * kexec-elf-rel-sh.c - ELF relocations for SuperH
+ * Copyright (C) 2008 Paul Mundt
+ *
+ * Based on the SHcompact module loader (arch/sh/kernel/module.c) in the
+ * Linux kernel, which is written by:
+ *
+ * Copyright (C) 2003 - 2008 Kaz Kojima & Paul Mundt
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+#include <stdio.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+
+int machine_verify_elf_rel(struct mem_ehdr *ehdr)
+{
+ /* Intentionally don't bother with endianness validation, it's
+ * configurable */
+
+ if (ehdr->ei_class != ELFCLASS32)
+ return 0;
+ if (ehdr->e_machine != EM_SH)
+ return 0;
+
+ return 1;
+}
+
+void machine_apply_elf_rel(struct mem_ehdr *UNUSED(ehdr),
+ struct mem_sym *UNUSED(sym), unsigned long r_type, void *orig_loc,
+ unsigned long UNUSED(address), unsigned long relocation)
+{
+ uint32_t *location = orig_loc;
+ uint32_t value;
+
+ switch (r_type) {
+ case R_SH_DIR32:
+ value = get_unaligned(location);
+ value += relocation;
+ put_unaligned(value, location);
+ break;
+ case R_SH_REL32:
+ relocation = (relocation - (uint32_t)location);
+ value = get_unaligned(location);
+ value += relocation;
+ put_unaligned(value, location);
+ break;
+ default:
+ die("Unknown rela relocation: %lu\n", r_type);
+ break;
+ }
+}
diff --git a/kexec/arch/sh/kexec-elf-sh.c b/kexec/arch/sh/kexec-elf-sh.c
new file mode 100644
index 0000000..897552c
--- /dev/null
+++ b/kexec/arch/sh/kexec-elf-sh.c
@@ -0,0 +1,136 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2008 Magnus Damm
+ *
+ * Based on x86 implementation,
+ * Copyright (C) 2003-2005 Eric Biederman (ebiederm@xmission.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-elf-boot.h"
+#include <arch/options.h>
+#include "crashdump-sh.h"
+#include "kexec-sh.h"
+
+int elf_sh_probe(const char *buf, off_t len)
+{
+ struct mem_ehdr ehdr;
+ int result;
+ result = build_elf_exec_info(buf, len, &ehdr, 0);
+ if (result < 0)
+ goto out;
+
+ /* Verify the architecuture specific bits */
+ if (ehdr.e_machine != EM_SH) {
+ result = -1;
+ goto out;
+ }
+
+ result = 0;
+ out:
+ free_elf_info(&ehdr);
+ return result;
+}
+
+void elf_sh_usage(void)
+{
+ printf(" --append=STRING Set the kernel command line to STRING\n"
+ );
+}
+
+int elf_sh_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ struct mem_ehdr ehdr;
+ char *command_line;
+ char *modified_cmdline;
+ struct mem_sym sym;
+ int opt, rc;
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { 0, 0, 0, 0 },
+ };
+
+ static const char short_options[] = KEXEC_OPT_STR "";
+
+ /*
+ * Parse the command line arguments
+ */
+ command_line = modified_cmdline = 0;
+ while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch(opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX) {
+ break;
+ }
+ case OPT_APPEND:
+ command_line = optarg;
+ break;
+ }
+ }
+
+ /* Need to append some command line parameters internally in case of
+ * taking crash dumps.
+ */
+ if (info->kexec_flags & (KEXEC_ON_CRASH | KEXEC_PRESERVE_CONTEXT)) {
+ modified_cmdline = xmalloc(COMMAND_LINE_SIZE);
+ memset((void *)modified_cmdline, 0, COMMAND_LINE_SIZE);
+ if (command_line) {
+ strncpy(modified_cmdline, command_line,
+ COMMAND_LINE_SIZE);
+ modified_cmdline[COMMAND_LINE_SIZE - 1] = '\0';
+ }
+ }
+
+ /* Load the ELF executable */
+ elf_exec_build_load(info, &ehdr, buf, len, 0);
+ info->entry = (void *)virt_to_phys(ehdr.e_entry);
+
+ /* If panic kernel is being loaded, additional segments need
+ * to be created. */
+ if (info->kexec_flags & (KEXEC_ON_CRASH | KEXEC_PRESERVE_CONTEXT)) {
+ rc = load_crashdump_segments(info, modified_cmdline);
+ if (rc < 0)
+ return -1;
+ /* Use new command line. */
+ command_line = modified_cmdline;
+ }
+
+ /* If we're booting a vmlinux then fill in empty_zero_page */
+ if (elf_rel_find_symbol(&ehdr, "empty_zero_page", &sym) == 0) {
+ char *zp = (void *)ehdr.e_shdr[sym.st_shndx].sh_data;
+
+ kexec_sh_setup_zero_page(zp, 4096, command_line);
+ }
+
+ return 0;
+}
diff --git a/kexec/arch/sh/kexec-netbsd-sh.c b/kexec/arch/sh/kexec-netbsd-sh.c
new file mode 100644
index 0000000..ed93759
--- /dev/null
+++ b/kexec/arch/sh/kexec-netbsd-sh.c
@@ -0,0 +1,149 @@
+/*
+ * kexec-netbsd-sh.c - kexec netbsd loader for the SH
+ * Copyright (C) 2005 kogiidena@eggplant.ddo.jp
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+#define _GNU_SOURCE
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <elf.h>
+#include <boot/elf_boot.h>
+#include <ip_checksum.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include <arch/options.h>
+
+static const int probe_debug = 0;
+extern const unsigned char netbsd_booter[];
+
+/*
+ * netbsd_sh_probe - sanity check the elf image
+ *
+ * Make sure that the file image has a reasonable chance of working.
+ */
+int netbsd_sh_probe(const char *buf, off_t UNUSED(len))
+{
+ Elf32_Ehdr *ehdr;
+
+ ehdr = (Elf32_Ehdr *)buf;
+ if(memcmp(buf, ELFMAG, SELFMAG) != 0){
+ return -1;
+ }
+ if (ehdr->e_machine != EM_SH) {
+ return -1;
+ }
+ return 0;
+}
+
+void netbsd_sh_usage(void)
+{
+ printf(
+ " --howto=VALUE NetBSD kernel boot option.\n"
+ " --miniroot=FILE NetBSD miniroot ramdisk.\n\n");
+}
+
+int netbsd_sh_load(int argc, char **argv, const char *buf, off_t UNUSED(len),
+ struct kexec_info *info)
+{
+ const char *howto, *miniroot;
+ unsigned long entry, start, size, psz;
+ char *miniroot_buf;
+ off_t miniroot_length;
+ unsigned int howto_value;
+ unsigned char *param;
+ unsigned long *paraml;
+ unsigned char *img;
+
+ int opt;
+
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ {0, 0, 0, 0},
+ };
+
+ static const char short_options[] = KEXEC_ARCH_OPT_STR "";
+
+ howto = miniroot = 0;
+ while ((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch (opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX) {
+ break;
+ }
+ case OPT_NBSD_HOWTO:
+ howto = optarg;
+ break;
+ case OPT_NBSD_MROOT:
+ miniroot = optarg;
+ break;
+ }
+ }
+
+ /* howto */
+ howto_value = 0;
+ if(howto){
+ howto_value = strtol(howto, NULL, 0);
+ }
+
+ psz = getpagesize();
+
+ /* Parse the Elf file */
+ {
+ Elf32_Ehdr *ehdr;
+ Elf32_Phdr *phdr;
+ unsigned long bbs;
+ ehdr = (Elf32_Ehdr *)buf;
+ phdr = (Elf32_Phdr *)&buf[ehdr->e_phoff];
+
+ entry = ehdr->e_entry;
+ img = (unsigned char *)&buf[phdr->p_offset];
+ start = (phdr->p_paddr) & 0x1fffffff;
+ bbs = phdr->p_filesz;
+ size = phdr->p_memsz;
+
+ if(size < bbs){
+ size = bbs;
+ }
+
+ size = _ALIGN(size, psz);
+ memset(&img[bbs], 0, size-bbs);
+ add_segment(info, img, size, start, size);
+ start += size;
+ }
+
+ /* miniroot file */
+ miniroot_buf = 0;
+ if (miniroot) {
+ miniroot_buf = slurp_file(miniroot, &miniroot_length);
+ howto_value |= 0x200;
+ size = _ALIGN(miniroot_length, psz);
+ add_segment(info, miniroot_buf, size, start, size);
+ start += size;
+ }
+
+ /* howto & bootinfo */
+ param = xmalloc(4096);
+ memset(param, 0, 4096);
+ paraml = (unsigned long *) &param[256];
+ memcpy(param, netbsd_booter, 256);
+ paraml[0] = entry;
+ paraml[1] = howto_value;
+ add_segment(info, param, 4096, start, 4096);
+
+ /* For now we don't have arguments to pass :( */
+ info->entry = (void *) (start | 0xa0000000);
+ return 0;
+}
diff --git a/kexec/arch/sh/kexec-sh.c b/kexec/arch/sh/kexec-sh.c
new file mode 100644
index 0000000..ce341c8
--- /dev/null
+++ b/kexec/arch/sh/kexec-sh.c
@@ -0,0 +1,259 @@
+/*
+ * kexec-sh.c - kexec for the SH
+ * Copyright (C) 2004 kogiidena@eggplant.ddo.jp
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+#define _GNU_SOURCE
+#include <stddef.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <getopt.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "kexec-sh.h"
+#include <arch/options.h>
+
+#define MAX_MEMORY_RANGES 64
+static struct memory_range memory_range[MAX_MEMORY_RANGES];
+
+static int kexec_sh_memory_range_callback(void *UNUSED(data), int nr,
+ char *UNUSED(str),
+ unsigned long long base,
+ unsigned long long length)
+{
+ if (nr < MAX_MEMORY_RANGES) {
+ memory_range[nr].start = base;
+ memory_range[nr].end = base + length - 1;
+ memory_range[nr].type = RANGE_RAM;
+ return 0;
+ }
+
+ return 1;
+}
+
+/* Return a sorted list of available memory ranges. */
+int get_memory_ranges(struct memory_range **range, int *ranges,
+ unsigned long kexec_flags)
+{
+ int nr, ret;
+ nr = kexec_iomem_for_each_line("System RAM\n",
+ kexec_sh_memory_range_callback, NULL);
+ *range = memory_range;
+ *ranges = nr;
+
+ /*
+ * Redefine the memory region boundaries if kernel
+ * exports the limits and if it is panic kernel.
+ * Override user values only if kernel exported values are
+ * subset of user defined values.
+ */
+ if (kexec_flags & KEXEC_ON_CRASH) {
+ unsigned long long start, end;
+
+ ret = parse_iomem_single("Crash kernel\n", &start, &end);
+ if (ret != 0) {
+ fprintf(stderr, "parse_iomem_single failed.\n");
+ return -1;
+ }
+
+ if (start > mem_min)
+ mem_min = start;
+ if (end < mem_max)
+ mem_max = end;
+ }
+
+ return 0;
+}
+
+/* Supported file types and callbacks */
+struct file_type file_type[] = {
+ /* uImage is probed before zImage because the latter also accepts
+ uncompressed images. */
+ { "uImage-sh", uImage_sh_probe, uImage_sh_load, zImage_sh_usage },
+ { "zImage-sh", zImage_sh_probe, zImage_sh_load, zImage_sh_usage },
+ { "elf-sh", elf_sh_probe, elf_sh_load, elf_sh_usage },
+ { "netbsd-sh", netbsd_sh_probe, netbsd_sh_load, netbsd_sh_usage },
+};
+int file_types = sizeof(file_type) / sizeof(file_type[0]);
+
+
+void arch_usage(void)
+{
+
+ printf(
+ " none\n\n"
+ "Default options:\n"
+ " --append=\"%s\"\n"
+ " STRING of --append is set from /proc/cmdline as default.\n"
+ ,get_append());
+
+}
+
+int arch_process_options(int argc, char **argv)
+{
+ /* The common options amongst loaders (e.g. --append) should be read
+ * here, and the loader-specific options (e.g. NetBSD stuff) should
+ * then be re-parsed in the loader.
+ * (e.g. in kexec-netbsd-sh.c, for example.)
+ */
+ static const struct option options[] = {
+ KEXEC_ALL_OPTIONS
+ { 0, 0, NULL, 0 },
+ };
+ static const char short_options[] = KEXEC_ARCH_OPT_STR;
+ int opt;
+
+ opterr = 0; /* Don't complain about unrecognized options here */
+ while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch(opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_MAX) {
+ break;
+ }
+ case OPT_APPEND:
+ case OPT_NBSD_HOWTO:
+ case OPT_NBSD_MROOT:
+ ;
+ }
+ }
+ /* Reset getopt for the next pass; called in other source modules */
+ opterr = 1;
+ optind = 1;
+ return 0;
+}
+
+const struct arch_map_entry arches[] = {
+ /* For compatibility with older patches
+ * use KEXEC_ARCH_DEFAULT instead of KEXEC_ARCH_SH here.
+ */
+ { "sh3", KEXEC_ARCH_DEFAULT },
+ { "sh4", KEXEC_ARCH_DEFAULT },
+ { "sh4a", KEXEC_ARCH_DEFAULT },
+ { "sh4al-dsp", KEXEC_ARCH_DEFAULT },
+ { NULL, 0 },
+};
+
+int arch_compat_trampoline(struct kexec_info *UNUSED(info))
+{
+ return 0;
+}
+
+void arch_update_purgatory(struct kexec_info *UNUSED(info))
+{
+}
+
+char append_buf[256];
+
+char *get_append(void)
+{
+ FILE *fp;
+ int len;
+ if((fp = fopen("/proc/cmdline", "r")) == NULL){
+ die("/proc/cmdline file open error !!\n");
+ }
+ fgets(append_buf, 256, fp);
+ len = strlen(append_buf);
+ append_buf[len-1] = 0;
+ fclose(fp);
+ return append_buf;
+}
+
+void kexec_sh_setup_zero_page(char *zero_page_buf, size_t zero_page_size,
+ char *cmd_line)
+{
+ size_t n = zero_page_size - 0x100;
+
+ memset(zero_page_buf, 0, zero_page_size);
+
+ if (cmd_line) {
+ if (n > strlen(cmd_line))
+ n = strlen(cmd_line);
+
+ memcpy(zero_page_buf + 0x100, cmd_line, n);
+ zero_page_buf[0x100 + n] = '\0';
+ }
+}
+
+static int is_32bit(void)
+{
+ const char *cpuinfo = "/proc/cpuinfo";
+ char line[MAX_LINE];
+ FILE *fp;
+ int status = 0;
+
+ fp = fopen(cpuinfo, "r");
+ if (!fp)
+ die("Cannot open %s\n", cpuinfo);
+
+ while(fgets(line, sizeof(line), fp) != 0) {
+ const char *key = "address sizes";
+ const char *value = " 32 bits physical";
+ char *p;
+ if (strncmp(line, key, strlen(key)))
+ continue;
+ p = strchr(line + strlen(key), ':');
+ if (!p)
+ continue;
+ if (!strncmp(p + 1, value, strlen(value)))
+ status = 1;
+ break;
+ }
+
+ fclose(fp);
+
+ return status;
+}
+
+unsigned long virt_to_phys(unsigned long addr)
+{
+ unsigned long seg = addr & 0xe0000000;
+ unsigned long long start = 0;
+ int have_32bit = is_32bit();
+
+ if (seg != 0x80000000 && (have_32bit || seg != 0xc0000000))
+ die("Virtual address %p is not in P1%s\n", (void *)addr,
+ have_32bit ? "" : " or P2");
+
+ /* If 32bit addressing is used then the base of system RAM
+ * is an offset into physical memory. */
+ if (have_32bit) {
+ unsigned long long end;
+ int ret;
+
+ /* Assume there is only one "System RAM" region */
+ ret = parse_iomem_single("System RAM\n", &start, &end);
+ if (ret)
+ die("Could not parse System RAM region "
+ "in /proc/iomem\n");
+ }
+
+ return addr - seg + start;
+}
+
+/*
+ * add_segment() should convert base to a physical address on superh,
+ * while the default is just to work with base as is */
+void add_segment(struct kexec_info *info, const void *buf, size_t bufsz,
+ unsigned long base, size_t memsz)
+{
+ add_segment_phys_virt(info, buf, bufsz, base, memsz, 1);
+}
+
+/*
+ * add_buffer() should convert base to a physical address on superh,
+ * while the default is just to work with base as is */
+unsigned long add_buffer(struct kexec_info *info, const void *buf,
+ unsigned long bufsz, unsigned long memsz,
+ unsigned long buf_align, unsigned long buf_min,
+ unsigned long buf_max, int buf_end)
+{
+ return add_buffer_phys_virt(info, buf, bufsz, memsz, buf_align,
+ buf_min, buf_max, buf_end, 1);
+}
diff --git a/kexec/arch/sh/kexec-sh.h b/kexec/arch/sh/kexec-sh.h
new file mode 100644
index 0000000..7d28ade
--- /dev/null
+++ b/kexec/arch/sh/kexec-sh.h
@@ -0,0 +1,29 @@
+#ifndef KEXEC_SH_H
+#define KEXEC_SH_H
+
+#define COMMAND_LINE_SIZE 2048
+
+int uImage_sh_probe(const char *buf, off_t len);
+int uImage_sh_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+
+int zImage_sh_probe(const char *buf, off_t len);
+int zImage_sh_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void zImage_sh_usage(void);
+
+int elf_sh_probe(const char *buf, off_t len);
+int elf_sh_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void elf_sh_usage(void);
+
+int netbsd_sh_probe(const char *buf, off_t len);
+int netbsd_sh_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void netbsd_sh_usage(void);
+
+char *get_append(void);
+void kexec_sh_setup_zero_page(char *zero_page_buf, size_t zero_page_size,
+ char *cmd_line);
+
+#endif /* KEXEC_SH_H */
diff --git a/kexec/arch/sh/kexec-uImage-sh.c b/kexec/arch/sh/kexec-uImage-sh.c
new file mode 100644
index 0000000..130f12c
--- /dev/null
+++ b/kexec/arch/sh/kexec-uImage-sh.c
@@ -0,0 +1,24 @@
+/*
+ * uImage support added by Marc Andre Tanner <mat@brain-dump.org>
+ *
+ * Cloned from ARM by Paul Mundt, 2009.
+ */
+#include <stdint.h>
+#include <string.h>
+#include <sys/types.h>
+#include <image.h>
+#include <kexec-uImage.h>
+#include "../../kexec.h"
+#include "kexec-sh.h"
+
+int uImage_sh_probe(const char *buf, off_t len)
+{
+ return uImage_probe_kernel(buf, len, IH_ARCH_SH);
+}
+
+int uImage_sh_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ return zImage_sh_load(argc, argv, buf + sizeof(struct image_header),
+ len - sizeof(struct image_header), info);
+}
diff --git a/kexec/arch/sh/kexec-zImage-sh.c b/kexec/arch/sh/kexec-zImage-sh.c
new file mode 100644
index 0000000..6dc2c13
--- /dev/null
+++ b/kexec/arch/sh/kexec-zImage-sh.c
@@ -0,0 +1,142 @@
+/*
+ * kexec-zImage-sh.c - kexec zImage loader for the SH
+ * Copyright (C) 2005 kogiidena@eggplant.ddo.jp
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+#define _GNU_SOURCE
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <elf.h>
+#include <boot/elf_boot.h>
+#include <ip_checksum.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include <arch/options.h>
+#include "kexec-sh.h"
+
+static const int probe_debug = 0;
+
+#define HEAD32_KERNEL_START_ADDR 0
+#define HEAD32_DECOMPRESS_KERNEL_ADDR 1
+#define HEAD32_INIT_STACK_ADDR 2
+#define HEAD32_INIT_SR 3
+#define HEAD32_INIT_SR_VALUE 0x400000F0
+
+static unsigned long zImage_head32(const char *buf, int offs)
+{
+ unsigned long *values = (void *)buf;
+ int k;
+
+ for (k = (0x200 / 4) - 1; k > 0; k--)
+ if (values[k] != 0x00090009) /* not nop + nop padding*/
+ return values[k - offs];
+
+ return 0;
+}
+
+/*
+ * zImage_sh_probe - sanity check the elf image
+ *
+ * Make sure that the file image has a reasonable chance of working.
+ */
+int zImage_sh_probe(const char *buf, off_t UNUSED(len))
+{
+ if (memcmp(&buf[0x202], "HdrS", 4) != 0)
+ return -1;
+
+ if (zImage_head32(buf, HEAD32_INIT_SR) != HEAD32_INIT_SR_VALUE)
+ return -1;
+
+ return 0;
+}
+
+void zImage_sh_usage(void)
+{
+ printf(
+ " --append=STRING Set the kernel command line to STRING.\n"
+ " --empty-zero=ADDRESS Set the kernel top ADDRESS. \n\n");
+
+}
+
+int zImage_sh_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ char *command_line;
+ int opt;
+ unsigned long empty_zero, zero_page_base, zero_page_size, k;
+ unsigned long image_base;
+ char *param;
+
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ {0, 0, 0, 0},
+ };
+
+ static const char short_options[] = KEXEC_ARCH_OPT_STR "";
+
+ command_line = 0;
+ while ((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch (opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX) {
+ break;
+ }
+ case OPT_APPEND:
+ command_line = optarg;
+ break;
+ }
+ }
+
+ if (!command_line)
+ command_line = get_append();
+
+ /* assume the zero page is the page before the vmlinux entry point.
+ * we don't know the page size though, but 64k seems to be max.
+ * put several 4k zero page copies before the entry point to cover
+ * all combinations.
+ */
+
+ empty_zero = zImage_head32(buf, HEAD32_KERNEL_START_ADDR);
+
+ zero_page_size = 0x10000;
+ zero_page_base = virt_to_phys(empty_zero - zero_page_size);
+
+ while (!valid_memory_range(info, zero_page_base,
+ zero_page_base + zero_page_size - 1)) {
+ zero_page_base += 0x1000;
+ zero_page_size -= 0x1000;
+ if (zero_page_size == 0)
+ die("Unable to determine zero page size from %p \n",
+ (void *)empty_zero);
+ }
+
+ param = xmalloc(zero_page_size);
+ for (k = 0; k < (zero_page_size / 0x1000); k++)
+ kexec_sh_setup_zero_page(param + (k * 0x1000), 0x1000,
+ command_line);
+
+ add_segment(info, param, zero_page_size,
+ 0x80000000 | zero_page_base, zero_page_size);
+
+ /* load image a bit above the zero page, round up to 64k
+ * the zImage will relocate itself, but only up seems supported.
+ */
+
+ image_base = _ALIGN(empty_zero, 0x10000);
+ add_segment(info, buf, len, image_base, len);
+ info->entry = (void *)virt_to_phys(image_base);
+ return 0;
+}
diff --git a/kexec/arch/sh/netbsd_booter.S b/kexec/arch/sh/netbsd_booter.S
new file mode 100644
index 0000000..d4d16df
--- /dev/null
+++ b/kexec/arch/sh/netbsd_booter.S
@@ -0,0 +1,47 @@
+ .globl netbsd_booter
+netbsd_booter:
+ mov.l ccr,r0
+ mov #0,r1
+ mov.l r1,@r0
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ mova netbsd_start,r0
+ mov.l @r0,r1
+ add #4,r0
+ mov.l @r0,r4 ! howto
+ add #4,r0
+ mov r0,r5 ! bootinfo
+ jmp @r1
+ nop
+ nop
+ nop
+ .align 4
+ccr: .long 0xff00001c
+
+ .align 8
+netbsd_start:
+ .long 0x8c001000
+ .long 0x200 ! howto
+ .long 0 ! bootinfo
+ .long 0 ! bootinfo
+ .long 0 ! bootinfo
+ .long 0 ! bootinfo
+ .long 0 ! bootinfo
+ .long 0 ! bootinfo
+ .long 0 ! bootinfo
+ .long 0 ! bootinfo
+ .long 0 ! bootinfo
+ .long 0 ! bootinfo
+ .long 0 ! bootinfo
+ .long 0 ! bootinfo
+ .long 0 ! bootinfo
+ .long 0 ! bootinfo
+
diff --git a/kexec/arch/x86_64/Makefile b/kexec/arch/x86_64/Makefile
new file mode 100644
index 0000000..275add5
--- /dev/null
+++ b/kexec/arch/x86_64/Makefile
@@ -0,0 +1,24 @@
+#
+# kexec x86_64 (linux booting linux)
+#
+x86_64_KEXEC_SRCS = kexec/arch/i386/kexec-elf-x86.c
+x86_64_KEXEC_SRCS += kexec/arch/i386/kexec-bzImage.c
+x86_64_KEXEC_SRCS += kexec/arch/i386/kexec-multiboot-x86.c
+x86_64_KEXEC_SRCS += kexec/arch/i386/kexec-mb2-x86.c
+x86_64_KEXEC_SRCS += kexec/arch/i386/kexec-beoboot-x86.c
+x86_64_KEXEC_SRCS += kexec/arch/i386/kexec-nbi.c
+x86_64_KEXEC_SRCS += kexec/arch/i386/x86-linux-setup.c
+x86_64_KEXEC_SRCS += kexec/arch/i386/kexec-x86-common.c
+x86_64_KEXEC_SRCS += kexec/arch/i386/crashdump-x86.c
+
+x86_64_KEXEC_SRCS_native = kexec/arch/x86_64/kexec-x86_64.c
+x86_64_KEXEC_SRCS_native += kexec/arch/x86_64/kexec-elf-x86_64.c
+x86_64_KEXEC_SRCS_native += kexec/arch/x86_64/kexec-elf-rel-x86_64.c
+x86_64_KEXEC_SRCS_native += kexec/arch/x86_64/kexec-bzImage64.c
+
+x86_64_KEXEC_SRCS += $(x86_64_KEXEC_SRCS_native)
+
+# Don't add sources in i386/ to dist, as i386/Makefile adds them
+dist += kexec/arch/x86_64/Makefile $(x86_64_KEXEC_SRCS_native) \
+ kexec/arch/x86_64/kexec-x86_64.h \
+ kexec/arch/x86_64/include/arch/options.h
diff --git a/kexec/arch/x86_64/include/arch/options.h b/kexec/arch/x86_64/include/arch/options.h
new file mode 120000
index 0000000..047b0f9
--- /dev/null
+++ b/kexec/arch/x86_64/include/arch/options.h
@@ -0,0 +1 @@
+../../../i386/include/arch/options.h \ No newline at end of file
diff --git a/kexec/arch/x86_64/kexec-bzImage64.c b/kexec/arch/x86_64/kexec-bzImage64.c
new file mode 100644
index 0000000..aba4e3b
--- /dev/null
+++ b/kexec/arch/x86_64/kexec-bzImage64.c
@@ -0,0 +1,397 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2003-2010 Eric Biederman (ebiederm@xmission.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _GNU_SOURCE
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <elf.h>
+#include <boot/elf_boot.h>
+#include <ip_checksum.h>
+#include <x86/x86-linux.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "kexec-x86_64.h"
+#include "../i386/x86-linux-setup.h"
+#include "../i386/crashdump-x86.h"
+#include <arch/options.h>
+
+static const int probe_debug = 0;
+
+int bzImage64_probe(const char *buf, off_t len)
+{
+ const struct x86_linux_header *header;
+
+ if ((uintmax_t)len < (uintmax_t)(2 * 512)) {
+ if (probe_debug)
+ fprintf(stderr, "File is too short to be a bzImage!\n");
+ return -1;
+ }
+ header = (const struct x86_linux_header *)buf;
+ if (memcmp(header->header_magic, "HdrS", 4) != 0) {
+ if (probe_debug)
+ fprintf(stderr, "Not a bzImage\n");
+ return -1;
+ }
+ if (header->boot_sector_magic != 0xAA55) {
+ if (probe_debug)
+ fprintf(stderr, "No x86 boot sector present\n");
+ /* No x86 boot sector present */
+ return -1;
+ }
+ if (header->protocol_version < 0x020C) {
+ if (probe_debug)
+ fprintf(stderr, "Must be at least protocol version 2.12\n");
+ /* Must be at least protocol version 2.12 */
+ return -1;
+ }
+ if ((header->loadflags & 1) == 0) {
+ if (probe_debug)
+ fprintf(stderr, "zImage not a bzImage\n");
+ /* Not a bzImage */
+ return -1;
+ }
+ if ((header->xloadflags & 3) != 3) {
+ if (probe_debug)
+ fprintf(stderr, "Not a relocatable bzImage64\n");
+ /* Must be KERNEL_64 and CAN_BE_LOADED_ABOVE_4G */
+ return -1;
+ }
+
+#define XLF_EFI_KEXEC (1 << 4)
+ if ((header->xloadflags & XLF_EFI_KEXEC) == XLF_EFI_KEXEC)
+ bzImage_support_efi_boot = 1;
+
+ /* I've got a relocatable bzImage64 */
+ if (probe_debug)
+ fprintf(stderr, "It's a relocatable bzImage64\n");
+ return 0;
+}
+
+void bzImage64_usage(void)
+{
+ printf( " --entry-32bit Use the kernels 32bit entry point.\n"
+ " --real-mode Use the kernels real mode entry point.\n"
+ " --command-line=STRING Set the kernel command line to STRING.\n"
+ " --append=STRING Set the kernel command line to STRING.\n"
+ " --reuse-cmdline Use kernel command line from running system.\n"
+ " --initrd=FILE Use FILE as the kernel's initial ramdisk.\n"
+ " --ramdisk=FILE Use FILE as the kernel's initial ramdisk.\n"
+ );
+}
+
+static int do_bzImage64_load(struct kexec_info *info,
+ const char *kernel, off_t kernel_len,
+ const char *command_line, off_t command_line_len,
+ const char *initrd, off_t initrd_len)
+{
+ struct x86_linux_header setup_header;
+ struct x86_linux_param_header *real_mode;
+ int setup_sects;
+ size_t size;
+ int kern16_size;
+ unsigned long setup_base, setup_size, setup_header_size;
+ struct entry64_regs regs64;
+ char *modified_cmdline;
+ unsigned long cmdline_end;
+ unsigned long align, addr, k_size;
+ unsigned kern16_size_needed;
+
+ /*
+ * Find out about the file I am about to load.
+ */
+ if ((uintmax_t)kernel_len < (uintmax_t)(2 * 512))
+ return -1;
+
+ memcpy(&setup_header, kernel, sizeof(setup_header));
+ setup_sects = setup_header.setup_sects;
+ if (setup_sects == 0)
+ setup_sects = 4;
+ kern16_size = (setup_sects + 1) * 512;
+ if (kernel_len < kern16_size) {
+ fprintf(stderr, "BzImage truncated?\n");
+ return -1;
+ }
+
+ if ((uintmax_t)command_line_len > (uintmax_t)setup_header.cmdline_size) {
+ dbgprintf("Kernel command line too long for kernel!\n");
+ return -1;
+ }
+
+ /* Need to append some command line parameters internally in case of
+ * taking crash dumps.
+ */
+ if (info->kexec_flags & (KEXEC_ON_CRASH | KEXEC_PRESERVE_CONTEXT)) {
+ modified_cmdline = xmalloc(COMMAND_LINE_SIZE);
+ memset((void *)modified_cmdline, 0, COMMAND_LINE_SIZE);
+ if (command_line) {
+ strncpy(modified_cmdline, command_line,
+ COMMAND_LINE_SIZE);
+ modified_cmdline[COMMAND_LINE_SIZE - 1] = '\0';
+ }
+
+ /* If panic kernel is being loaded, additional segments need
+ * to be created. load_crashdump_segments will take care of
+ * loading the segments as high in memory as possible, hence
+ * in turn as away as possible from kernel to avoid being
+ * stomped by the kernel.
+ */
+ if (load_crashdump_segments(info, modified_cmdline, -1, 0) < 0)
+ return -1;
+
+ /* Use new command line buffer */
+ command_line = modified_cmdline;
+ command_line_len = strlen(command_line) + 1;
+ }
+
+ /* x86_64 purgatory could be anywhere */
+ elf_rel_build_load(info, &info->rhdr, purgatory, purgatory_size,
+ 0x3000, -1, -1, 0);
+ dbgprintf("Loaded purgatory at addr 0x%lx\n", info->rhdr.rel_addr);
+ /* The argument/parameter segment */
+ kern16_size_needed = kern16_size;
+ if (kern16_size_needed < 4096)
+ kern16_size_needed = 4096;
+ setup_size = kern16_size_needed + command_line_len +
+ PURGATORY_CMDLINE_SIZE;
+ real_mode = xmalloc(setup_size);
+ memset(real_mode, 0, setup_size);
+
+ /* only copy setup_header */
+ setup_header_size = kernel[0x201] + 0x202 - 0x1f1;
+ if (setup_header_size > 0x7f)
+ setup_header_size = 0x7f;
+ memcpy((unsigned char *)real_mode + 0x1f1, kernel + 0x1f1,
+ setup_header_size);
+
+ /* No real mode code will be executing. setup segment can be loaded
+ * anywhere as we will be just reading command line.
+ */
+ setup_base = add_buffer(info, real_mode, setup_size, setup_size,
+ 16, 0x3000, -1, -1);
+
+ dbgprintf("Loaded real_mode_data and command line at 0x%lx\n",
+ setup_base);
+
+ /* The main kernel segment */
+ k_size = kernel_len - kern16_size;
+ /* need to use run-time size for buffer searching */
+ dbgprintf("kernel init_size 0x%x\n", real_mode->init_size);
+ size = _ALIGN(real_mode->init_size, 4096);
+ align = real_mode->kernel_alignment;
+ addr = add_buffer(info, kernel + kern16_size, k_size,
+ size, align, 0x100000, -1, -1);
+ if (addr == ULONG_MAX)
+ die("can not load bzImage64");
+ dbgprintf("Loaded 64bit kernel at 0x%lx\n", addr);
+
+ /* Tell the kernel what is going on */
+ setup_linux_bootloader_parameters_high(info, real_mode, setup_base,
+ kern16_size_needed, command_line, command_line_len,
+ initrd, initrd_len, 1); /* put initrd high too */
+
+ elf_rel_get_symbol(&info->rhdr, "entry64_regs", &regs64,
+ sizeof(regs64));
+ regs64.rbx = 0; /* Bootstrap processor */
+ regs64.rsi = setup_base; /* Pointer to the parameters */
+ regs64.rip = addr + 0x200; /* the entry point for startup_64 */
+ regs64.rsp = elf_rel_get_addr(&info->rhdr, "stack_end"); /* Stack, unused */
+ elf_rel_set_symbol(&info->rhdr, "entry64_regs", &regs64,
+ sizeof(regs64));
+
+ cmdline_end = setup_base + kern16_size_needed + command_line_len - 1;
+ elf_rel_set_symbol(&info->rhdr, "cmdline_end", &cmdline_end,
+ sizeof(unsigned long));
+
+ /* Fill in the information BIOS calls would normally provide. */
+ setup_linux_system_parameters(info, real_mode);
+
+ return 0;
+}
+
+/* This assumes file is being loaded using file based kexec syscall */
+int bzImage64_load_file(int argc, char **argv, struct kexec_info *info)
+{
+ int ret = 0;
+ char *command_line = NULL, *tmp_cmdline = NULL;
+ const char *ramdisk = NULL, *append = NULL;
+ int entry_16bit = 0, entry_32bit = 0;
+ int opt;
+ int command_line_len;
+
+ /* See options.h -- add any more there, too. */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { "command-line", 1, 0, OPT_APPEND },
+ { "append", 1, 0, OPT_APPEND },
+ { "reuse-cmdline", 0, 0, OPT_REUSE_CMDLINE },
+ { "initrd", 1, 0, OPT_RAMDISK },
+ { "ramdisk", 1, 0, OPT_RAMDISK },
+ { "real-mode", 0, 0, OPT_REAL_MODE },
+ { "entry-32bit", 0, 0, OPT_ENTRY_32BIT },
+ { 0, 0, 0, 0 },
+ };
+ static const char short_options[] = KEXEC_ARCH_OPT_STR "d";
+
+ while ((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch (opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX)
+ break;
+ case OPT_APPEND:
+ append = optarg;
+ break;
+ case OPT_REUSE_CMDLINE:
+ tmp_cmdline = get_command_line();
+ break;
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+ case OPT_REAL_MODE:
+ entry_16bit = 1;
+ break;
+ case OPT_ENTRY_32BIT:
+ entry_32bit = 1;
+ break;
+ }
+ }
+ command_line = concat_cmdline(tmp_cmdline, append);
+ if (tmp_cmdline)
+ free(tmp_cmdline);
+ command_line_len = 0;
+ if (command_line) {
+ command_line_len = strlen(command_line) + 1;
+ } else {
+ command_line = strdup("\0");
+ command_line_len = 1;
+ }
+
+ if (entry_16bit || entry_32bit) {
+ fprintf(stderr, "Kexec2 syscall does not support 16bit"
+ " or 32bit entry yet\n");
+ ret = -1;
+ goto out;
+ }
+
+ if (ramdisk) {
+ info->initrd_fd = open(ramdisk, O_RDONLY);
+ if (info->initrd_fd == -1) {
+ fprintf(stderr, "Could not open initrd file %s:%s\n",
+ ramdisk, strerror(errno));
+ ret = -1;
+ goto out;
+ }
+ }
+
+ info->command_line = command_line;
+ info->command_line_len = command_line_len;
+ return ret;
+out:
+ free(command_line);
+ return ret;
+}
+
+int bzImage64_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ char *command_line = NULL, *tmp_cmdline = NULL;
+ const char *ramdisk = NULL, *append = NULL;
+ char *ramdisk_buf;
+ off_t ramdisk_length = 0;
+ int command_line_len;
+ int entry_16bit = 0, entry_32bit = 0;
+ int opt;
+ int result;
+
+ if (info->file_mode)
+ return bzImage64_load_file(argc, argv, info);
+
+ /* See options.h -- add any more there, too. */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { "command-line", 1, 0, OPT_APPEND },
+ { "append", 1, 0, OPT_APPEND },
+ { "reuse-cmdline", 0, 0, OPT_REUSE_CMDLINE },
+ { "initrd", 1, 0, OPT_RAMDISK },
+ { "ramdisk", 1, 0, OPT_RAMDISK },
+ { "real-mode", 0, 0, OPT_REAL_MODE },
+ { "entry-32bit", 0, 0, OPT_ENTRY_32BIT },
+ { 0, 0, 0, 0 },
+ };
+ static const char short_options[] = KEXEC_ARCH_OPT_STR "d";
+
+ while ((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch (opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX)
+ break;
+ case OPT_APPEND:
+ append = optarg;
+ break;
+ case OPT_REUSE_CMDLINE:
+ tmp_cmdline = get_command_line();
+ break;
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+ case OPT_REAL_MODE:
+ entry_16bit = 1;
+ break;
+ case OPT_ENTRY_32BIT:
+ entry_32bit = 1;
+ break;
+ }
+ }
+ command_line = concat_cmdline(tmp_cmdline, append);
+ if (tmp_cmdline)
+ free(tmp_cmdline);
+ command_line_len = 0;
+ if (command_line) {
+ command_line_len = strlen(command_line) + 1;
+ } else {
+ command_line = strdup("\0");
+ command_line_len = 1;
+ }
+ ramdisk_buf = 0;
+ if (ramdisk)
+ ramdisk_buf = slurp_file(ramdisk, &ramdisk_length);
+
+ if (entry_16bit || entry_32bit)
+ result = do_bzImage_load(info, buf, len, command_line,
+ command_line_len, ramdisk_buf,
+ ramdisk_length, 0, 0, entry_16bit);
+ else
+ result = do_bzImage64_load(info, buf, len, command_line,
+ command_line_len, ramdisk_buf,
+ ramdisk_length);
+
+ free(command_line);
+ return result;
+}
diff --git a/kexec/arch/x86_64/kexec-elf-rel-x86_64.c b/kexec/arch/x86_64/kexec-elf-rel-x86_64.c
new file mode 100644
index 0000000..0d22f3b
--- /dev/null
+++ b/kexec/arch/x86_64/kexec-elf-rel-x86_64.c
@@ -0,0 +1,94 @@
+#include <stdio.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+
+int machine_verify_elf_rel(struct mem_ehdr *ehdr)
+{
+ if (ehdr->ei_data != ELFDATA2LSB) {
+ return 0;
+ }
+ if (ehdr->ei_class != ELFCLASS64 &&
+ ehdr->ei_class != ELFCLASS32) { /* x32 */
+ return 0;
+ }
+ if (ehdr->e_machine != EM_X86_64) {
+ return 0;
+ }
+ return 1;
+}
+
+static const char *reloc_name(unsigned long r_type)
+{
+ static const char *r_name[] = {
+ "R_X86_64_NONE",
+ "R_X86_64_64",
+ "R_X86_64_PC32",
+ "R_X86_64_GOT32",
+ "R_X86_64_PLT32",
+ "R_X86_64_COPY",
+ "R_X86_64_GLOB_DAT",
+ "R_X86_64_JUMP_SLOT",
+ "R_X86_64_RELATIVE",
+ "R_X86_64_GOTPCREL",
+ "R_X86_64_32",
+ "R_X86_64_32S",
+ "R_X86_64_16",
+ "R_X86_64_PC16",
+ "R_X86_64_8",
+ "R_X86_64_PC8",
+ "R_X86_64_DTPMOD64",
+ "R_X86_64_DTPOFF64",
+ "R_X86_64_TPOFF64",
+ "R_X86_64_TLSGD",
+ "R_X86_64_TLSLD",
+ "R_X86_64_DTPOFF32",
+ "R_X86_64_GOTTPOFF",
+ "R_X86_64_TPOFF32",
+ };
+ static char buf[100];
+ const char *name;
+ if (r_type < (sizeof(r_name)/sizeof(r_name[0]))){
+ name = r_name[r_type];
+ }
+ else {
+ sprintf(buf, "R_X86_64_%lu", r_type);
+ name = buf;
+ }
+ return name;
+}
+
+void machine_apply_elf_rel(struct mem_ehdr *UNUSED(ehdr),
+ struct mem_sym *UNUSED(sym), unsigned long r_type, void *location,
+ unsigned long address, unsigned long value)
+{
+ dbgprintf("%s\n", reloc_name(r_type));
+ switch(r_type) {
+ case R_X86_64_NONE:
+ break;
+ case R_X86_64_64:
+ *(uint64_t *)location = value;
+ break;
+ case R_X86_64_32:
+ *(uint32_t *)location = value;
+ if (value != *(uint32_t *)location)
+ goto overflow;
+ break;
+ case R_X86_64_32S:
+ *(uint32_t *)location = value;
+ if ((int64_t)value != *(int32_t *)location)
+ goto overflow;
+ break;
+ case R_X86_64_PC32:
+ case R_X86_64_PLT32:
+ *(uint32_t *)location = value - address;
+ break;
+ default:
+ die("Unhandled rela relocation: %s\n", reloc_name(r_type));
+ break;
+ }
+ return;
+ overflow:
+ die("overflow in relocation type %s val %lx\n",
+ reloc_name(r_type), value);
+}
diff --git a/kexec/arch/x86_64/kexec-elf-x86_64.c b/kexec/arch/x86_64/kexec-elf-x86_64.c
new file mode 100644
index 0000000..7f9540a
--- /dev/null
+++ b/kexec/arch/x86_64/kexec-elf-x86_64.c
@@ -0,0 +1,257 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2003-2005 Eric Biederman (ebiederm@xmission.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _GNU_SOURCE
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <elf.h>
+#include <x86/x86-linux.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-elf-boot.h"
+#include "../i386/x86-linux-setup.h"
+#include "kexec-x86_64.h"
+#include "../i386/kexec-x86.h"
+#include "../i386/crashdump-x86.h"
+#include <arch/options.h>
+
+int elf_x86_64_probe(const char *buf, off_t len)
+{
+ return elf_x86_any_probe(buf, len, CORE_TYPE_ELF64);
+}
+
+void elf_x86_64_usage(void)
+{
+ printf( " --command-line=STRING Set the kernel command line to STRING\n"
+ " --append=STRING Set the kernel command line to STRING\n"
+ " --reuse-cmdline Use kernel command line from running system.\n"
+ " --initrd=FILE Use FILE as the kernel's initial ramdisk.\n"
+ " --ramdisk=FILE Use FILE as the kernel's initial ramdisk.\n"
+ " --args-linux Pass linux kernel style options\n"
+ " --args-elf Pass elf boot notes\n"
+ " --args-none Jump directly from the kernel\n"
+ );
+}
+
+int elf_x86_64_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ struct mem_ehdr ehdr;
+ const char *append = NULL;
+ char *command_line = NULL, *modified_cmdline;
+ char *tmp_cmdline = NULL;
+ int command_line_len;
+ const char *ramdisk;
+ unsigned long entry, max_addr;
+ int arg_style;
+#define ARG_STYLE_ELF 0
+#define ARG_STYLE_LINUX 1
+#define ARG_STYLE_NONE 2
+ int opt;
+ int result = 0;
+ const char *error_msg = NULL;
+
+ /* See options.h and add any new options there too! */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { "command-line", 1, NULL, OPT_APPEND },
+ { "append", 1, NULL, OPT_APPEND },
+ { "reuse-cmdline", 0, NULL, OPT_REUSE_CMDLINE },
+ { "initrd", 1, NULL, OPT_RAMDISK },
+ { "ramdisk", 1, NULL, OPT_RAMDISK },
+ { "args-elf", 0, NULL, OPT_ARGS_ELF },
+ { "args-linux", 0, NULL, OPT_ARGS_LINUX },
+ { "args-none", 0, NULL, OPT_ARGS_NONE },
+ { 0, 0, NULL, 0 },
+ };
+
+ static const char short_options[] = KEXEC_ARCH_OPT_STR "";
+
+ /*
+ * Parse the command line arguments
+ */
+ arg_style = ARG_STYLE_ELF;
+ modified_cmdline = 0;
+ ramdisk = 0;
+ while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch(opt) {
+ default:
+ /* Ignore core options */
+ if (opt < OPT_ARCH_MAX) {
+ break;
+ }
+ fprintf(stderr, "Unknown option: opt: %d\n", opt);
+ case OPT_APPEND:
+ append = optarg;
+ break;
+ case OPT_REUSE_CMDLINE:
+ tmp_cmdline = get_command_line();
+ break;
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+ case OPT_ARGS_ELF:
+ arg_style = ARG_STYLE_ELF;
+ break;
+ case OPT_ARGS_LINUX:
+ arg_style = ARG_STYLE_LINUX;
+ break;
+ case OPT_ARGS_NONE:
+#ifdef __x86_64__
+ arg_style = ARG_STYLE_NONE;
+#else
+ die("--args-none only works on arch x86_64\n");
+#endif
+ break;
+ }
+ }
+ command_line = concat_cmdline(tmp_cmdline, append);
+ if (tmp_cmdline)
+ free(tmp_cmdline);
+ command_line_len = 0;
+ if (command_line) {
+ command_line_len = strlen(command_line) +1;
+ }
+
+ /* Need to append some command line parameters internally in case of
+ * taking crash dumps.
+ */
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ modified_cmdline = xmalloc(COMMAND_LINE_SIZE);
+ memset((void *)modified_cmdline, 0, COMMAND_LINE_SIZE);
+ if (command_line) {
+ strncpy(modified_cmdline, command_line,
+ COMMAND_LINE_SIZE);
+ modified_cmdline[COMMAND_LINE_SIZE - 1] = '\0';
+ }
+ }
+
+ /* Load the ELF executable */
+ elf_exec_build_load(info, &ehdr, buf, len, 0);
+
+ entry = ehdr.e_entry;
+ max_addr = elf_max_addr(&ehdr);
+
+ /* Do we want arguments? */
+ if (arg_style != ARG_STYLE_NONE) {
+ /* Load the setup code */
+ elf_rel_build_load(info, &info->rhdr, purgatory, purgatory_size,
+ 0, ULONG_MAX, 1, 0);
+ }
+ if (arg_style == ARG_STYLE_NONE) {
+ info->entry = (void *)entry;
+
+ }
+ else if (arg_style == ARG_STYLE_ELF) {
+ unsigned long note_base;
+ struct entry64_regs regs;
+
+ /* Setup the ELF boot notes */
+ note_base = elf_boot_notes(info, max_addr, command_line, command_line_len);
+
+ /* Initialize the registers */
+ elf_rel_get_symbol(&info->rhdr, "entry64_regs", &regs, sizeof(regs));
+ regs.rdi = note_base; /* The notes (arg1) */
+ regs.rip = entry; /* The entry point */
+ regs.rsp = elf_rel_get_addr(&info->rhdr, "stack_end"); /* Stack, unused */
+ elf_rel_set_symbol(&info->rhdr, "entry64_regs", &regs, sizeof(regs));
+
+ if (ramdisk) {
+ error_msg = "Ramdisks not supported with generic elf arguments";
+ goto out;
+ }
+ }
+ else if (arg_style == ARG_STYLE_LINUX) {
+ struct x86_linux_faked_param_header *hdr;
+ unsigned long param_base;
+ char *ramdisk_buf;
+ off_t ramdisk_length;
+ struct entry64_regs regs;
+ int rc=0;
+
+ /* Get the linux parameter header */
+ hdr = xmalloc(sizeof(*hdr));
+ param_base = add_buffer(info, hdr, sizeof(*hdr), sizeof(*hdr),
+ 16, 0, max_addr, 1);
+
+ /* Initialize the parameter header */
+ memset(hdr, 0, sizeof(*hdr));
+ init_linux_parameters(&hdr->hdr);
+
+ /* Add a ramdisk to the current image */
+ ramdisk_buf = 0;
+ ramdisk_length = 0;
+ if (ramdisk) {
+ ramdisk_buf = slurp_file(ramdisk, &ramdisk_length);
+ }
+
+ /* If panic kernel is being loaded, additional segments need
+ * to be created. */
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ rc = load_crashdump_segments(info, modified_cmdline,
+ max_addr, 0);
+ if (rc < 0) {
+ result = -1;
+ goto out;
+ }
+ /* Use new command line. */
+ free(command_line);
+ command_line = modified_cmdline;
+ command_line_len = strlen(modified_cmdline) + 1;
+ modified_cmdline = NULL;
+ }
+
+ /* Tell the kernel what is going on */
+ setup_linux_bootloader_parameters(info, &hdr->hdr, param_base,
+ offsetof(struct x86_linux_faked_param_header, command_line),
+ command_line, command_line_len,
+ ramdisk_buf, ramdisk_length);
+
+ /* Fill in the information bios calls would usually provide */
+ setup_linux_system_parameters(info, &hdr->hdr);
+
+ /* Initialize the registers */
+ elf_rel_get_symbol(&info->rhdr, "entry64_regs", &regs, sizeof(regs));
+ regs.rbx = 0; /* Bootstrap processor */
+ regs.rsi = param_base; /* Pointer to the parameters */
+ regs.rip = entry; /* the entry point */
+ regs.rsp = elf_rel_get_addr(&info->rhdr, "stack_end"); /* Stack, unused */
+ elf_rel_set_symbol(&info->rhdr, "entry64_regs", &regs, sizeof(regs));
+ }
+ else {
+ error_msg = "Unknown argument style\n";
+ }
+
+out:
+ free(command_line);
+ free(modified_cmdline);
+ if (error_msg)
+ die("%s", error_msg);
+ return result;
+}
diff --git a/kexec/arch/x86_64/kexec-x86_64.c b/kexec/arch/x86_64/kexec-x86_64.c
new file mode 100644
index 0000000..ffd84f0
--- /dev/null
+++ b/kexec/arch/x86_64/kexec-x86_64.c
@@ -0,0 +1,190 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2003,2004 Eric Biederman (ebiederm@xmission.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <stddef.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "kexec-x86_64.h"
+#include "../i386/crashdump-x86.h"
+#include <arch/options.h>
+
+struct file_type file_type[] = {
+ { "multiboot2-x86", multiboot2_x86_probe, multiboot2_x86_load,
+ multiboot2_x86_usage },
+ { "elf-x86_64", elf_x86_64_probe, elf_x86_64_load, elf_x86_64_usage },
+ { "multiboot-x86", multiboot_x86_probe, multiboot_x86_load,
+ multiboot_x86_usage },
+ { "elf-x86", elf_x86_probe, elf_x86_load, elf_x86_usage },
+ { "bzImage64", bzImage64_probe, bzImage64_load, bzImage64_usage },
+ { "bzImage", bzImage_probe, bzImage_load, bzImage_usage },
+ { "beoboot-x86", beoboot_probe, beoboot_load, beoboot_usage },
+ { "nbi-x86", nbi_probe, nbi_load, nbi_usage },
+};
+int file_types = sizeof(file_type)/sizeof(file_type[0]);
+
+
+void arch_usage(void)
+{
+ printf(
+ " --reset-vga Attempt to reset a standard vga device\n"
+ " --serial=<port> Specify the serial port for debug output\n"
+ " --serial-baud=<baud_rate> Specify the serial port baud rate\n"
+ " --console-vga Enable the vga console\n"
+ " --console-serial Enable the serial console\n"
+ " --pass-memmap-cmdline Pass memory map via command line in kexec on panic case\n"
+ " --noefi Disable efi support\n"
+ " --reuse-video-type Reuse old boot time video type blindly\n"
+ );
+}
+
+struct arch_options_t arch_options = {
+ .reset_vga = 0,
+ .serial_base = 0x3f8,
+ .serial_baud = 0,
+ .console_vga = 0,
+ .console_serial = 0,
+ .core_header_type = CORE_TYPE_ELF64,
+ .pass_memmap_cmdline = 0,
+ .noefi = 0,
+ .reuse_video_type = 0,
+};
+
+int arch_process_options(int argc, char **argv)
+{
+ static const struct option options[] = {
+ KEXEC_ALL_OPTIONS
+ { 0, 0, NULL, 0 },
+ };
+ static const char short_options[] = KEXEC_ALL_OPT_STR;
+ int opt;
+ unsigned long value;
+ char *end;
+
+ opterr = 0; /* Don't complain about unrecognized options here */
+ while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch(opt) {
+ default:
+ break;
+ case OPT_RESET_VGA:
+ arch_options.reset_vga = 1;
+ break;
+ case OPT_CONSOLE_VGA:
+ arch_options.console_vga = 1;
+ break;
+ case OPT_CONSOLE_SERIAL:
+ arch_options.console_serial = 1;
+ break;
+ case OPT_SERIAL:
+ value = ULONG_MAX;
+ if (strcmp(optarg, "ttyS0") == 0) {
+ value = 0x3f8;
+ }
+ else if (strcmp(optarg, "ttyS1") == 0) {
+ value = 0x2f8;
+ }
+ else if (strncmp(optarg, "0x", 2) == 0) {
+ value = strtoul(optarg +2, &end, 16);
+ if (*end != '\0') {
+ value = ULONG_MAX;
+ }
+ }
+ if (value >= 65536) {
+ fprintf(stderr, "Bad serial port base '%s'\n",
+ optarg);
+ usage();
+ return -1;
+
+ }
+ arch_options.serial_base = value;
+ break;
+ case OPT_SERIAL_BAUD:
+ value = strtoul(optarg, &end, 0);
+ if ((value > 115200) || ((115200 %value) != 0) ||
+ (value < 9600) || (*end))
+ {
+ fprintf(stderr, "Bad serial port baud rate '%s'\n",
+ optarg);
+ usage();
+ return -1;
+
+ }
+ arch_options.serial_baud = value;
+ break;
+ case OPT_PASS_MEMMAP_CMDLINE:
+ arch_options.pass_memmap_cmdline = 1;
+ break;
+ case OPT_NOEFI:
+ arch_options.noefi = 1;
+ break;
+ case OPT_REUSE_VIDEO_TYPE:
+ arch_options.reuse_video_type = 1;
+ break;
+ }
+ }
+ /* Reset getopt for the next pass; called in other source modules */
+ opterr = 1;
+ optind = 1;
+ return 0;
+}
+
+const struct arch_map_entry arches[] = {
+ { "x86_64", KEXEC_ARCH_X86_64 },
+ { NULL, 0 },
+};
+
+int arch_compat_trampoline(struct kexec_info *UNUSED(info))
+{
+ return 0;
+}
+
+void arch_update_purgatory(struct kexec_info *info)
+{
+ uint8_t panic_kernel = 0;
+
+ elf_rel_set_symbol(&info->rhdr, "reset_vga",
+ &arch_options.reset_vga, sizeof(arch_options.reset_vga));
+ elf_rel_set_symbol(&info->rhdr, "serial_base",
+ &arch_options.serial_base, sizeof(arch_options.serial_base));
+ elf_rel_set_symbol(&info->rhdr, "serial_baud",
+ &arch_options.serial_baud, sizeof(arch_options.serial_baud));
+ elf_rel_set_symbol(&info->rhdr, "console_vga",
+ &arch_options.console_vga, sizeof(arch_options.console_vga));
+ elf_rel_set_symbol(&info->rhdr, "console_serial",
+ &arch_options.console_serial, sizeof(arch_options.console_serial));
+ elf_rel_set_symbol(&info->rhdr, "backup_src_start",
+ &info->backup_src_start, sizeof(info->backup_src_start));
+ elf_rel_set_symbol(&info->rhdr, "backup_src_size",
+ &info->backup_src_size, sizeof(info->backup_src_size));
+
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ panic_kernel = 1;
+ elf_rel_set_symbol(&info->rhdr, "backup_start",
+ &info->backup_start, sizeof(info->backup_start));
+ }
+ elf_rel_set_symbol(&info->rhdr, "panic_kernel",
+ &panic_kernel, sizeof(panic_kernel));
+}
diff --git a/kexec/arch/x86_64/kexec-x86_64.h b/kexec/arch/x86_64/kexec-x86_64.h
new file mode 100644
index 0000000..21c3a73
--- /dev/null
+++ b/kexec/arch/x86_64/kexec-x86_64.h
@@ -0,0 +1,41 @@
+#ifndef KEXEC_X86_64_H
+#define KEXEC_X86_64_H
+
+#include "../i386/kexec-x86.h"
+
+struct entry64_regs {
+ uint64_t rax;
+ uint64_t rbx;
+ uint64_t rcx;
+ uint64_t rdx;
+ uint64_t rsi;
+ uint64_t rdi;
+ uint64_t rsp;
+ uint64_t rbp;
+ uint64_t r8;
+ uint64_t r9;
+ uint64_t r10;
+ uint64_t r11;
+ uint64_t r12;
+ uint64_t r13;
+ uint64_t r14;
+ uint64_t r15;
+ uint64_t rip;
+};
+
+int elf_x86_64_probe(const char *buf, off_t len);
+int elf_x86_64_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void elf_x86_64_usage(void);
+
+int bzImage64_probe(const char *buf, off_t len);
+int bzImage64_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void bzImage64_usage(void);
+
+int multiboot2_x86_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void multiboot2_x86_usage(void);
+int multiboot2_x86_probe(const char *buf, off_t buf_len);
+
+#endif /* KEXEC_X86_64_H */
diff --git a/kexec/arch_reuse_initrd.c b/kexec/arch_reuse_initrd.c
new file mode 100644
index 0000000..b92b8d8
--- /dev/null
+++ b/kexec/arch_reuse_initrd.c
@@ -0,0 +1,8 @@
+#include "kexec.h"
+
+unsigned char reuse_initrd = 0;
+
+void arch_reuse_initrd(void)
+{
+ die("--reuseinitrd not implemented on this architecture\n");
+}
diff --git a/kexec/crashdump-elf.c b/kexec/crashdump-elf.c
new file mode 100644
index 0000000..b8bb686
--- /dev/null
+++ b/kexec/crashdump-elf.c
@@ -0,0 +1,241 @@
+
+#if !defined(FUNC) || !defined(EHDR) || !defined(PHDR)
+#error FUNC, EHDR and PHDR must be defined
+#endif
+
+#if (ELF_WIDTH == 64)
+#define dbgprintf_phdr(prefix, phdr) \
+do { \
+ dbgprintf("%s: p_type = %u, p_offset = 0x%llx p_paddr = 0x%llx " \
+ "p_vaddr = 0x%llx p_filesz = 0x%llx p_memsz = 0x%llx\n", \
+ (prefix), (phdr)->p_type, \
+ (unsigned long long)((phdr)->p_offset), \
+ (unsigned long long)((phdr)->p_paddr), \
+ (unsigned long long)((phdr)->p_vaddr), \
+ (unsigned long long)((phdr)->p_filesz), \
+ (unsigned long long)((phdr)->p_memsz)); \
+} while(0)
+#else
+#define dbgprintf_phdr(prefix, phdr) \
+do { \
+ dbgprintf("%s: p_type = %u, p_offset = 0x%x " "p_paddr = 0x%x " \
+ "p_vaddr = 0x%x p_filesz = 0x%x p_memsz = 0x%x\n", \
+ (prefix), (phdr)->p_type, (phdr)->p_offset, (phdr)->p_paddr, \
+ (phdr)->p_vaddr, (phdr)->p_filesz, (phdr)->p_memsz); \
+} while(0)
+#endif
+
+/* Prepares the crash memory headers and stores in supplied buffer. */
+int FUNC(struct kexec_info *info,
+ struct crash_elf_info *elf_info,
+ struct memory_range *range, int ranges,
+ void **buf, unsigned long *size, unsigned long align)
+{
+ EHDR *elf;
+ PHDR *phdr;
+ int i;
+ unsigned long sz;
+ char *bufp;
+ long int nr_cpus = 0;
+ uint64_t notes_addr, notes_len;
+ uint64_t vmcoreinfo_addr, vmcoreinfo_len;
+ int has_vmcoreinfo = 0;
+ int (*get_note_info)(int cpu, uint64_t *addr, uint64_t *len);
+ long int count_cpu;
+
+ if (xen_present())
+ nr_cpus = xen_get_nr_phys_cpus();
+ else
+ nr_cpus = sysconf(_SC_NPROCESSORS_CONF);
+
+ if (nr_cpus < 0) {
+ return -1;
+ }
+
+ if (xen_present()) {
+ if (!get_xen_vmcoreinfo(&vmcoreinfo_addr, &vmcoreinfo_len))
+ has_vmcoreinfo = 1;
+ } else
+ if (!get_kernel_vmcoreinfo(&vmcoreinfo_addr, &vmcoreinfo_len))
+ has_vmcoreinfo = 1;
+
+ sz = sizeof(EHDR) + (nr_cpus + has_vmcoreinfo) * sizeof(PHDR) +
+ ranges * sizeof(PHDR);
+
+ /*
+ * Certain architectures such as x86_64 and ia64 require a separate
+ * PT_LOAD program header for the kernel. This is controlled through
+ * elf_info->kern_size.
+ *
+ * The separate PT_LOAD program header is required either because the
+ * kernel is mapped at a different location than the rest of the
+ * physical memory or because we need to support relocatable kernels.
+ * Or both as on x86_64.
+ *
+ * In the relocatable kernel case this PT_LOAD segment is used to tell
+ * where the kernel was actually loaded which may be different from
+ * the load address present in the vmlinux file.
+ *
+ * The extra kernel PT_LOAD program header results in a vmcore file
+ * which is larger than the size of the physical memory. This is
+ * because the memory for the kernel is present both in the kernel
+ * PT_LOAD program header and in the physical RAM program headers.
+ */
+
+ if (elf_info->kern_size && !xen_present()) {
+ sz += sizeof(PHDR);
+ }
+
+ /*
+ * Make sure the ELF core header is aligned to at least 1024.
+ * We do this because the secondary kernel gets the ELF core
+ * header address on the kernel command line through the memmap=
+ * option, and this option requires 1k granularity.
+ */
+
+ if (align % ELF_CORE_HEADER_ALIGN) {
+ return -1;
+ }
+
+ sz = _ALIGN(sz, align);
+
+ bufp = xmalloc(sz);
+ memset(bufp, 0, sz);
+
+ *buf = bufp;
+ *size = sz;
+
+ /* Setup ELF Header*/
+ elf = (EHDR *) bufp;
+ bufp += sizeof(EHDR);
+ memcpy(elf->e_ident, ELFMAG, SELFMAG);
+ elf->e_ident[EI_CLASS] = elf_info->class;
+ elf->e_ident[EI_DATA] = elf_info->data;
+ elf->e_ident[EI_VERSION]= EV_CURRENT;
+ elf->e_ident[EI_OSABI] = ELFOSABI_NONE;
+ memset(elf->e_ident+EI_PAD, 0, EI_NIDENT-EI_PAD);
+ elf->e_type = ET_CORE;
+ elf->e_machine = crash_architecture(elf_info);
+ elf->e_version = EV_CURRENT;
+ elf->e_entry = 0;
+ elf->e_phoff = sizeof(EHDR);
+ elf->e_shoff = 0;
+ elf->e_flags = 0;
+ elf->e_ehsize = sizeof(EHDR);
+ elf->e_phentsize= sizeof(PHDR);
+ elf->e_phnum = 0;
+ elf->e_shentsize= 0;
+ elf->e_shnum = 0;
+ elf->e_shstrndx = 0;
+
+ /* Default way to get crash notes is by get_crash_notes_per_cpu() */
+
+ get_note_info = elf_info->get_note_info;
+ if (!get_note_info)
+ get_note_info = get_crash_notes_per_cpu;
+
+ if (xen_present())
+ get_note_info = xen_get_note;
+
+ /* PT_NOTE program headers. One per cpu */
+
+ count_cpu = nr_cpus;
+ for (i = 0; count_cpu > 0; i++) {
+ int ret;
+
+ ret = get_note_info(i, &notes_addr, &notes_len);
+ count_cpu--;
+ if (ret < 0) /* This cpu is not present. Skip it. */
+ continue;
+
+ phdr = (PHDR *) bufp;
+ bufp += sizeof(PHDR);
+ phdr->p_type = PT_NOTE;
+ phdr->p_flags = 0;
+ phdr->p_offset = phdr->p_paddr = notes_addr;
+ phdr->p_vaddr = 0;
+ phdr->p_filesz = phdr->p_memsz = notes_len;
+ /* Do we need any alignment of segments? */
+ phdr->p_align = 0;
+
+ /* Increment number of program headers. */
+ (elf->e_phnum)++;
+ dbgprintf_phdr("Elf header", phdr);
+ }
+
+ if (has_vmcoreinfo && !(info->kexec_flags & KEXEC_PRESERVE_CONTEXT)) {
+ phdr = (PHDR *) bufp;
+ bufp += sizeof(PHDR);
+ phdr->p_type = PT_NOTE;
+ phdr->p_flags = 0;
+ phdr->p_offset = phdr->p_paddr = vmcoreinfo_addr;
+ phdr->p_vaddr = 0;
+ phdr->p_filesz = phdr->p_memsz = vmcoreinfo_len;
+ /* Do we need any alignment of segments? */
+ phdr->p_align = 0;
+
+ (elf->e_phnum)++;
+ dbgprintf_phdr("vmcoreinfo header", phdr);
+ }
+
+ /* Setup an PT_LOAD type program header for the region where
+ * Kernel is mapped if elf_info->kern_size is non-zero.
+ */
+
+ if (elf_info->kern_size && !xen_present()) {
+ phdr = (PHDR *) bufp;
+ bufp += sizeof(PHDR);
+ phdr->p_type = PT_LOAD;
+ phdr->p_flags = PF_R|PF_W|PF_X;
+ phdr->p_offset = phdr->p_paddr = elf_info->kern_paddr_start;
+ phdr->p_vaddr = elf_info->kern_vaddr_start;
+ phdr->p_filesz = phdr->p_memsz = elf_info->kern_size;
+ phdr->p_align = 0;
+ (elf->e_phnum)++;
+ dbgprintf_phdr("Kernel text Elf header", phdr);
+ }
+
+ /* Setup PT_LOAD type program header for every system RAM chunk.
+ * A seprate program header for Backup Region*/
+ for (i = 0; i < ranges; i++, range++) {
+ unsigned long long mstart, mend;
+ if (range->type != RANGE_RAM)
+ continue;
+ mstart = range->start;
+ mend = range->end;
+ if (!mstart && !mend)
+ continue;
+ phdr = (PHDR *) bufp;
+ bufp += sizeof(PHDR);
+ phdr->p_type = PT_LOAD;
+ phdr->p_flags = PF_R|PF_W|PF_X;
+ phdr->p_offset = mstart;
+
+ if (mstart == info->backup_src_start
+ && (mend - mstart + 1) == info->backup_src_size)
+ phdr->p_offset = info->backup_start;
+
+ /* We already prepared the header for kernel text. Map
+ * rest of the memory segments to kernel linearly mapped
+ * memory region.
+ */
+ phdr->p_paddr = mstart;
+ phdr->p_vaddr = phys_to_virt(elf_info, mstart);
+ phdr->p_filesz = phdr->p_memsz = mend - mstart + 1;
+ /* Do we need any alignment of segments? */
+ phdr->p_align = 0;
+
+ /* HIGMEM has a virtual address of -1 */
+
+ if (elf_info->lowmem_limit
+ && (mend > (elf_info->lowmem_limit - 1)))
+ phdr->p_vaddr = -1;
+
+ /* Increment number of program headers. */
+ (elf->e_phnum)++;
+ dbgprintf_phdr("Elf header", phdr);
+ }
+ return 0;
+}
+
+#undef dbgprintf_phdr
diff --git a/kexec/crashdump-xen.c b/kexec/crashdump-xen.c
new file mode 100644
index 0000000..3f59a0d
--- /dev/null
+++ b/kexec/crashdump-xen.c
@@ -0,0 +1,256 @@
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <stdlib.h>
+#include <elf.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <setjmp.h>
+#include <signal.h>
+#include "kexec.h"
+#include "crashdump.h"
+#include "kexec-syscall.h"
+#include "config.h"
+#include "kexec-xen.h"
+
+struct crash_note_info {
+ unsigned long base;
+ unsigned long length;
+};
+
+static int xen_phys_cpus;
+static struct crash_note_info *xen_phys_notes;
+
+/* based on code from xen-detect.c */
+static int is_dom0;
+#if defined(__i386__) || defined(__x86_64__)
+static jmp_buf xen_sigill_jmp;
+void xen_sigill_handler(int sig)
+{
+ longjmp(xen_sigill_jmp, 1);
+}
+
+static void xen_cpuid(uint32_t idx, uint32_t *regs, int pv_context)
+{
+#ifdef __i386__
+ /* Use the stack to avoid reg constraint failures with some gcc flags */
+ asm volatile (
+ "push %%eax; push %%ebx; push %%ecx; push %%edx\n\t"
+ "test %1,%1 ; jz 1f ; ud2a ; .ascii \"xen\" ; 1: cpuid\n\t"
+ "mov %%eax,(%2); mov %%ebx,4(%2)\n\t"
+ "mov %%ecx,8(%2); mov %%edx,12(%2)\n\t"
+ "pop %%edx; pop %%ecx; pop %%ebx; pop %%eax\n\t"
+ : : "a" (idx), "c" (pv_context), "S" (regs) : "memory" );
+#else
+ asm volatile (
+ "test %5,%5 ; jz 1f ; ud2a ; .ascii \"xen\" ; 1: cpuid\n\t"
+ : "=a" (regs[0]), "=b" (regs[1]), "=c" (regs[2]), "=d" (regs[3])
+ : "0" (idx), "1" (pv_context), "2" (0) );
+#endif
+}
+
+static int check_for_xen(int pv_context)
+{
+ uint32_t regs[4];
+ char signature[13];
+ uint32_t base;
+
+ for (base = 0x40000000; base < 0x40010000; base += 0x100)
+ {
+ xen_cpuid(base, regs, pv_context);
+
+ *(uint32_t *)(signature + 0) = regs[1];
+ *(uint32_t *)(signature + 4) = regs[2];
+ *(uint32_t *)(signature + 8) = regs[3];
+ signature[12] = '\0';
+
+ if (strcmp("XenVMMXenVMM", signature) == 0 && regs[0] >= (base + 2))
+ goto found;
+ }
+
+ return 0;
+
+found:
+ xen_cpuid(base + 1, regs, pv_context);
+ return regs[0];
+}
+
+static int xen_detect_pv_guest(void)
+{
+ struct sigaction act, oldact;
+ int is_pv = -1;
+
+ if (setjmp(xen_sigill_jmp))
+ return is_pv;
+
+ memset(&act, 0, sizeof(act));
+ act.sa_handler = xen_sigill_handler;
+ sigemptyset (&act.sa_mask);
+ if (sigaction(SIGILL, &act, &oldact))
+ return is_pv;
+ if (check_for_xen(1))
+ is_pv = 1;
+ sigaction(SIGILL, &oldact, NULL);
+ return is_pv;
+}
+#else
+static int xen_detect_pv_guest(void)
+{
+ return 1;
+}
+#endif
+
+/*
+ * Return 1 if its a PV guest.
+ * This includes dom0, which is the only PV guest where kexec/kdump works.
+ * HVM guests have to be handled as native hardware.
+ */
+int xen_present(void)
+{
+ if (!is_dom0) {
+ if (access("/proc/xen", F_OK) == 0)
+ is_dom0 = xen_detect_pv_guest();
+ else
+ is_dom0 = -1;
+ }
+ return is_dom0 > 0;
+}
+
+unsigned long xen_architecture(struct crash_elf_info *elf_info)
+{
+ unsigned long machine = elf_info->machine;
+#ifdef HAVE_LIBXENCTRL
+ int rc;
+ xen_capabilities_info_t capabilities;
+ xc_interface *xc;
+
+ if (!xen_present())
+ goto out;
+
+ memset(capabilities, '0', XEN_CAPABILITIES_INFO_LEN);
+
+ xc = xc_interface_open(NULL, NULL, 0);
+ if ( !xc ) {
+ fprintf(stderr, "failed to open xen control interface.\n");
+ goto out;
+ }
+
+ rc = xc_version(xc, XENVER_capabilities, &capabilities[0]);
+ if ( rc == -1 ) {
+ fprintf(stderr, "failed to make Xen version hypercall.\n");
+ goto out_close;
+ }
+
+ if (strstr(capabilities, "xen-3.0-x86_64"))
+ machine = EM_X86_64;
+ else if (strstr(capabilities, "xen-3.0-x86_32"))
+ machine = EM_386;
+
+ out_close:
+ xc_interface_close(xc);
+
+ out:
+#endif
+ return machine;
+}
+
+#ifdef HAVE_LIBXENCTRL
+int get_xen_vmcoreinfo(uint64_t *addr, uint64_t *len)
+{
+ uint64_t end;
+ int ret = 0;
+
+ ret = xen_get_kexec_range(KEXEC_RANGE_MA_VMCOREINFO, addr, &end);
+ if (ret < 0)
+ return -1;
+
+ *len = end - *addr + 1;
+
+ return 0;
+}
+
+int xen_get_nr_phys_cpus(void)
+{
+ xc_interface *xc;
+ int max_cpus;
+ int cpu = -1;
+
+ if (xen_phys_cpus)
+ return xen_phys_cpus;
+
+ xc = xc_interface_open(NULL, NULL, 0);
+ if (!xc) {
+ fprintf(stderr, "failed to open xen control interface.\n");
+ return -1;
+ }
+
+ max_cpus = xc_get_max_cpus(xc);
+ if (max_cpus <= 0)
+ goto out;
+
+ xen_phys_notes = calloc(max_cpus, sizeof(*xen_phys_notes));
+ if (xen_phys_notes == NULL)
+ goto out;
+
+ for (cpu = 0; cpu < max_cpus; cpu++) {
+ uint64_t size, start;
+ int ret;
+
+ ret = xc_kexec_get_range(xc, KEXEC_RANGE_MA_CPU, cpu, &size, &start);
+ if (ret < 0)
+ break;
+
+ xen_phys_notes[cpu].base = start;
+ xen_phys_notes[cpu].length = size;
+ }
+
+ xen_phys_cpus = cpu;
+
+out:
+ xc_interface_close(xc);
+ return cpu;
+}
+#else
+int get_xen_vmcoreinfo(uint64_t *addr, uint64_t *len)
+{
+ return -1;
+}
+
+int xen_get_nr_phys_cpus(void)
+{
+ return -1;
+}
+#endif
+
+
+int xen_get_note(int cpu, uint64_t *addr, uint64_t *len)
+{
+ struct crash_note_info *note;
+
+ if (xen_phys_cpus <= 0)
+ return -1;
+
+ note = xen_phys_notes + cpu;
+
+ *addr = note->base;
+ *len = note->length;
+
+ return 0;
+}
+
+#ifdef HAVE_LIBXENCTRL
+int xen_get_crashkernel_region(uint64_t *start, uint64_t *end)
+{
+ return xen_get_kexec_range(KEXEC_RANGE_MA_CRASH, start, end);
+}
+#else
+int xen_get_crashkernel_region(uint64_t *start, uint64_t *end)
+{
+ return -1;
+}
+#endif
diff --git a/kexec/crashdump.c b/kexec/crashdump.c
new file mode 100644
index 0000000..0b363c5
--- /dev/null
+++ b/kexec/crashdump.c
@@ -0,0 +1,159 @@
+/*
+ * crashdump.c: Architecture independent code for crashdump support.
+ *
+ * Created by: Vivek Goyal (vgoyal@in.ibm.com)
+ * Copyright (C) IBM Corporation, 2005. All rights reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <limits.h>
+#include <linux/limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <elf.h>
+#include "kexec.h"
+#include "crashdump.h"
+#include "kexec-syscall.h"
+
+/* include "crashdump-elf.c" twice to create two functions from one */
+
+#define ELF_WIDTH 64
+#define FUNC crash_create_elf64_headers
+#define EHDR Elf64_Ehdr
+#define PHDR Elf64_Phdr
+#include "crashdump-elf.c"
+#undef ELF_WIDTH
+#undef PHDR
+#undef EHDR
+#undef FUNC
+
+#define ELF_WIDTH 32
+#define FUNC crash_create_elf32_headers
+#define EHDR Elf32_Ehdr
+#define PHDR Elf32_Phdr
+#include "crashdump-elf.c"
+#undef ELF_WIDTH
+#undef PHDR
+#undef EHDR
+#undef FUNC
+
+unsigned long crash_architecture(struct crash_elf_info *elf_info)
+{
+ if (xen_present())
+ return xen_architecture(elf_info);
+ else
+ return elf_info->machine;
+}
+
+/* Returns the physical address of start of crash notes buffer for a cpu. */
+int get_crash_notes_per_cpu(int cpu, uint64_t *addr, uint64_t *len)
+{
+ char crash_notes[PATH_MAX];
+ char crash_notes_size[PATH_MAX];
+ char line[MAX_LINE];
+ FILE *fp;
+ struct stat cpu_stat;
+ int count;
+ unsigned long long temp;
+ int fopen_errno;
+ int stat_errno;
+
+ *addr = 0;
+ *len = 0;
+
+ sprintf(crash_notes, "/sys/devices/system/cpu/cpu%d/crash_notes", cpu);
+ fp = fopen(crash_notes, "r");
+ if (!fp) {
+ fopen_errno = errno;
+ if (fopen_errno != ENOENT)
+ die("Could not open \"%s\": %s\n", crash_notes,
+ strerror(fopen_errno));
+ if (stat("/sys/devices", &cpu_stat)) {
+ stat_errno = errno;
+ if (stat_errno == ENOENT)
+ die("\"/sys/devices\" does not exist. "
+ "Sysfs does not seem to be mounted. "
+ "Try mounting sysfs.\n");
+ die("Could not open \"/sys/devices\": %s\n",
+ strerror(stat_errno));
+ }
+ /* CPU is not physically present.*/
+ return -1;
+ }
+ if (!fgets(line, sizeof(line), fp))
+ die("Cannot parse %s: %s\n", crash_notes, strerror(errno));
+ count = sscanf(line, "%llx", &temp);
+ if (count != 1)
+ die("Cannot parse %s: %s\n", crash_notes, strerror(errno));
+ *addr = (uint64_t) temp;
+ fclose(fp);
+
+ *len = MAX_NOTE_BYTES;
+ sprintf(crash_notes_size,
+ "/sys/devices/system/cpu/cpu%d/crash_notes_size", cpu);
+ fp = fopen(crash_notes_size, "r");
+ if (fp) {
+ if (!fgets(line, sizeof(line), fp))
+ die("Cannot parse %s: %s\n",
+ crash_notes_size, strerror(errno));
+ count = sscanf(line, "%llu", &temp);
+ if (count != 1)
+ die("Cannot parse %s: %s\n",
+ crash_notes_size, strerror(errno));
+ *len = (uint64_t) temp;
+ fclose(fp);
+ }
+
+ dbgprintf("%s: crash_notes addr = %llx, size = %llu\n", __FUNCTION__,
+ (unsigned long long)*addr, (unsigned long long)*len);
+
+ return 0;
+}
+
+static int get_vmcoreinfo(const char *kdump_info, uint64_t *addr, uint64_t *len)
+{
+ char line[MAX_LINE];
+ int count;
+ FILE *fp;
+ unsigned long long temp, temp2;
+
+ *addr = 0;
+ *len = 0;
+
+ if (!(fp = fopen(kdump_info, "r")))
+ return -1;
+
+ if (!fgets(line, sizeof(line), fp))
+ die("Cannot parse %s: %s\n", kdump_info, strerror(errno));
+ count = sscanf(line, "%llx %llx", &temp, &temp2);
+ if (count != 2)
+ die("Cannot parse %s: %s\n", kdump_info, strerror(errno));
+
+ *addr = (uint64_t) temp;
+ *len = (uint64_t) temp2;
+
+ fclose(fp);
+ return 0;
+}
+
+/* Returns the physical address of start of crash notes buffer for a kernel. */
+int get_kernel_vmcoreinfo(uint64_t *addr, uint64_t *len)
+{
+ return get_vmcoreinfo("/sys/kernel/vmcoreinfo", addr, len);
+}
diff --git a/kexec/crashdump.h b/kexec/crashdump.h
new file mode 100644
index 0000000..18bd691
--- /dev/null
+++ b/kexec/crashdump.h
@@ -0,0 +1,64 @@
+#ifndef CRASHDUMP_H
+#define CRASHDUMP_H
+
+extern int get_crash_notes_per_cpu(int cpu, uint64_t *addr, uint64_t *len);
+extern int get_kernel_vmcoreinfo(uint64_t *addr, uint64_t *len);
+extern int get_xen_vmcoreinfo(uint64_t *addr, uint64_t *len);
+
+/* Need to find a better way to determine per cpu notes section size. */
+#define MAX_NOTE_BYTES 1024
+/* Expecting ELF headers to fit in 64K. Increase it if you need more. */
+#define KCORE_ELF_HEADERS_SIZE 65536
+/* The address of the ELF header is passed to the secondary kernel
+ * using the kernel command line option memmap=nnn.
+ * The smallest unit the kernel accepts is in kilobytes,
+ * so we need to make sure the ELF header is aligned to 1024.
+ */
+#define ELF_CORE_HEADER_ALIGN 1024
+
+/* structure passed to crash_create_elf32/64_headers() */
+
+struct crash_elf_info {
+ unsigned long class;
+ unsigned long data;
+ unsigned long machine;
+
+ unsigned long long page_offset;
+ unsigned long long kern_vaddr_start;
+ unsigned long long kern_paddr_start;
+ unsigned long kern_size;
+ unsigned long lowmem_limit;
+
+ int (*get_note_info)(int cpu, uint64_t *addr, uint64_t *len);
+};
+
+typedef int(*crash_create_elf_headers_func)(struct kexec_info *info,
+ struct crash_elf_info *elf_info,
+ struct memory_range *range,
+ int ranges,
+ void **buf, unsigned long *size,
+ unsigned long align);
+
+int crash_create_elf32_headers(struct kexec_info *info,
+ struct crash_elf_info *elf_info,
+ struct memory_range *range, int ranges,
+ void **buf, unsigned long *size,
+ unsigned long align);
+
+int crash_create_elf64_headers(struct kexec_info *info,
+ struct crash_elf_info *elf_info,
+ struct memory_range *range, int ranges,
+ void **buf, unsigned long *size,
+ unsigned long align);
+
+unsigned long crash_architecture(struct crash_elf_info *elf_info);
+
+unsigned long phys_to_virt(struct crash_elf_info *elf_info,
+ unsigned long long paddr);
+
+unsigned long xen_architecture(struct crash_elf_info *elf_info);
+int xen_get_nr_phys_cpus(void);
+int xen_get_note(int cpu, uint64_t *addr, uint64_t *len);
+int xen_get_crashkernel_region(uint64_t *start, uint64_t *end);
+
+#endif /* CRASHDUMP_H */
diff --git a/kexec/dt-ops.c b/kexec/dt-ops.c
new file mode 100644
index 0000000..0a96b75
--- /dev/null
+++ b/kexec/dt-ops.c
@@ -0,0 +1,176 @@
+#include <assert.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <libfdt.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "kexec.h"
+#include "dt-ops.h"
+
+static const char n_chosen[] = "chosen";
+
+static const char p_bootargs[] = "bootargs";
+static const char p_initrd_start[] = "linux,initrd-start";
+static const char p_initrd_end[] = "linux,initrd-end";
+
+int dtb_set_initrd(char **dtb, off_t *dtb_size, off_t start, off_t end)
+{
+ int result;
+ uint64_t value;
+
+ dbgprintf("%s: start %jd, end %jd, size %jd (%jd KiB)\n",
+ __func__, (intmax_t)start, (intmax_t)end,
+ (intmax_t)(end - start),
+ (intmax_t)(end - start) / 1024);
+
+ value = cpu_to_fdt64(start);
+
+ result = dtb_set_property(dtb, dtb_size, n_chosen, p_initrd_start,
+ &value, sizeof(value));
+
+ if (result)
+ return result;
+
+ value = cpu_to_fdt64(end);
+
+ result = dtb_set_property(dtb, dtb_size, n_chosen, p_initrd_end,
+ &value, sizeof(value));
+
+ if (result) {
+ dtb_delete_property(*dtb, n_chosen, p_initrd_start);
+ return result;
+ }
+
+ return 0;
+}
+
+void dtb_clear_initrd(char **dtb, off_t *dtb_size)
+{
+ dtb_delete_property(*dtb, n_chosen, p_initrd_start);
+ dtb_delete_property(*dtb, n_chosen, p_initrd_end);
+}
+
+int dtb_set_bootargs(char **dtb, off_t *dtb_size, const char *command_line)
+{
+ return dtb_set_property(dtb, dtb_size, n_chosen, p_bootargs,
+ command_line, strlen(command_line) + 1);
+}
+
+int dtb_set_property(char **dtb, off_t *dtb_size, const char *node,
+ const char *prop, const void *value, int value_len)
+{
+ int result;
+ int nodeoffset;
+ void *new_dtb;
+ int new_size;
+ char *new_node = NULL;
+
+ value_len = FDT_TAGALIGN(value_len);
+
+ new_size = FDT_TAGALIGN(*dtb_size + fdt_node_len(node)
+ + fdt_prop_len(prop, value_len));
+
+ new_dtb = malloc(new_size);
+
+ if (!new_dtb) {
+ dbgprintf("%s: malloc failed\n", __func__);
+ return -ENOMEM;
+ }
+
+ result = fdt_open_into(*dtb, new_dtb, new_size);
+
+ if (result) {
+ dbgprintf("%s: fdt_open_into failed: %s\n", __func__,
+ fdt_strerror(result));
+ goto on_error;
+ }
+
+ new_node = malloc(strlen("/") + strlen(node) + 1);
+ if (!new_node) {
+ dbgprintf("%s: malloc failed\n", __func__);
+ result = -ENOMEM;
+ goto on_error;
+ }
+
+ strcpy(new_node, "/");
+ strcat(new_node, node);
+
+ nodeoffset = fdt_path_offset(new_dtb, new_node);
+
+ if (nodeoffset == -FDT_ERR_NOTFOUND) {
+ result = fdt_add_subnode(new_dtb, 0, node);
+
+ if (result < 0) {
+ dbgprintf("%s: fdt_add_subnode failed: %s\n", __func__,
+ fdt_strerror(result));
+ goto on_error;
+ }
+ nodeoffset = result;
+ } else if (nodeoffset < 0) {
+ dbgprintf("%s: fdt_path_offset failed: %s\n", __func__,
+ fdt_strerror(nodeoffset));
+ goto on_error;
+ }
+
+ result = fdt_setprop(new_dtb, nodeoffset, prop, value, value_len);
+
+ if (result) {
+ dbgprintf("%s: fdt_setprop failed: %s\n", __func__,
+ fdt_strerror(result));
+ goto on_error;
+ }
+
+ /*
+ * Can't call free on dtb since dtb may have been mmaped by
+ * slurp_file().
+ */
+
+ result = fdt_pack(new_dtb);
+
+ if (result)
+ dbgprintf("%s: Unable to pack device tree: %s\n", __func__,
+ fdt_strerror(result));
+
+ *dtb = new_dtb;
+ *dtb_size = fdt_totalsize(*dtb);
+
+ return 0;
+
+on_error:
+ free(new_dtb);
+ free(new_node);
+ return result;
+}
+
+int dtb_delete_property(char *dtb, const char *node, const char *prop)
+{
+ int result, nodeoffset;
+ char *new_node = NULL;
+
+ new_node = malloc(strlen("/") + strlen(node) + 1);
+ if (!new_node) {
+ dbgprintf("%s: malloc failed\n", __func__);
+ return -ENOMEM;
+ }
+
+ strcpy(new_node, "/");
+ strcat(new_node, node);
+
+ nodeoffset = fdt_path_offset(dtb, new_node);
+ if (nodeoffset < 0) {
+ dbgprintf("%s: fdt_path_offset failed: %s\n", __func__,
+ fdt_strerror(nodeoffset));
+ free(new_node);
+ return nodeoffset;
+ }
+
+ result = fdt_delprop(dtb, nodeoffset, prop);
+
+ if (result)
+ dbgprintf("%s: fdt_delprop failed: %s\n", __func__,
+ fdt_strerror(nodeoffset));
+
+ free(new_node);
+ return result;
+}
diff --git a/kexec/dt-ops.h b/kexec/dt-ops.h
new file mode 100644
index 0000000..03659ce
--- /dev/null
+++ b/kexec/dt-ops.h
@@ -0,0 +1,14 @@
+#if !defined(KEXEC_DT_OPS_H)
+#define KEXEC_DT_OPS_H
+
+#include <sys/types.h>
+
+int dtb_set_initrd(char **dtb, off_t *dtb_size, off_t start, off_t end);
+void dtb_clear_initrd(char **dtb, off_t *dtb_size);
+int dtb_set_bootargs(char **dtb, off_t *dtb_size, const char *command_line);
+int dtb_set_property(char **dtb, off_t *dtb_size, const char *node,
+ const char *prop, const void *value, int value_len);
+
+int dtb_delete_property(char *dtb, const char *node, const char *prop);
+
+#endif
diff --git a/kexec/firmware_memmap.c b/kexec/firmware_memmap.c
new file mode 100644
index 0000000..457c3dc
--- /dev/null
+++ b/kexec/firmware_memmap.c
@@ -0,0 +1,302 @@
+/*
+ * firmware_memmap.c: Read /sys/firmware/memmap
+ *
+ * Created by: Bernhard Walle (bernhard.walle@gmx.de)
+ * Copyright (C) SUSE LINUX Products GmbH, 2008. All rights reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#define _GNU_SOURCE /* for ULLONG_MAX without C99 */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <limits.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "firmware_memmap.h"
+#include "kexec.h"
+
+/*
+ * If the system is too old for ULLONG_MAX or LLONG_MAX, define it here.
+ */
+#ifndef ULLONG_MAX
+# define ULLONG_MAX (~0ULL)
+#endif /* ULLONG_MAX */
+
+#ifndef LLONG_MAX
+# define LLONG_MAX (~0ULL >> 1)
+#endif /* LLONG_MAX */
+
+
+/**
+ * The full path to the sysfs interface that provides the memory map.
+ */
+#define FIRMWARE_MEMMAP_DIR "/sys/firmware/memmap"
+
+/**
+ * Parses a file that only contains one number. Typical for sysfs files.
+ *
+ * @param[in] filename the name of the file that should be parsed
+ * @return the value that has been read or ULLONG_MAX on error.
+ */
+static unsigned long long parse_numeric_sysfs(const char *filename)
+{
+ FILE *fp;
+ char linebuffer[BUFSIZ];
+ unsigned long long retval = ULLONG_MAX;
+
+ fp = fopen(filename, "r");
+ if (!fp) {
+ fprintf(stderr, "Opening \"%s\" failed: %s\n",
+ filename, strerror(errno));
+ return ULLONG_MAX;
+ }
+
+ if (!fgets(linebuffer, BUFSIZ, fp))
+ goto err;
+
+ linebuffer[BUFSIZ-1] = 0;
+
+ /* let strtoll() detect the base */
+ retval = strtoll(linebuffer, NULL, 0);
+
+err:
+ fclose(fp);
+
+ return retval;
+}
+
+/**
+ * Reads the contents of a one-line sysfs file to buffer. (This function is
+ * not threadsafe.)
+ *
+ * @param[in] filename the name of the file that should be read
+ *
+ * @return NULL on failure, a pointer to a static buffer (that should be copied
+ * with strdup() if the caller plans to use it after next function call)
+ */
+static char *parse_string_sysfs(const char *filename)
+{
+ FILE *fp;
+ static char linebuffer[BUFSIZ];
+ char *end;
+
+ fp = fopen(filename, "r");
+ if (!fp) {
+ fprintf(stderr, "Opening \"%s\" failed: %s\n",
+ filename, strerror(errno));
+ return NULL;
+ }
+
+ if (!fgets(linebuffer, BUFSIZ, fp)) {
+ fclose(fp);
+ return NULL;
+ }
+
+ linebuffer[BUFSIZ-1] = 0;
+
+ /* truncate trailing newline(s) */
+ end = linebuffer + strlen(linebuffer) - 1;
+ while (*end == '\n')
+ *end-- = 0;
+
+ fclose(fp);
+
+ return linebuffer;
+
+}
+
+static int parse_memmap_entry(const char *entry, struct memory_range *range)
+{
+ char filename[PATH_MAX];
+ char *type;
+ int ret;
+
+ /*
+ * entry/start
+ */
+ ret = snprintf(filename, PATH_MAX, "%s/%s", entry, "start");
+ if (ret < 0 || ret >= PATH_MAX) {
+ fprintf(stderr, "snprintf failed: %s\n", strerror(errno));
+ return -1;
+ }
+
+ filename[PATH_MAX-1] = 0;
+
+ range->start = parse_numeric_sysfs(filename);
+ if (range->start == ULLONG_MAX)
+ return -1;
+
+ /*
+ * entry/end
+ */
+ ret = snprintf(filename, PATH_MAX, "%s/%s", entry, "end");
+ if (ret < 0 || ret >= PATH_MAX) {
+ fprintf(stderr, "snprintf failed: %s\n", strerror(errno));
+ return -1;
+ }
+
+ filename[PATH_MAX-1] = 0;
+
+ range->end = parse_numeric_sysfs(filename);
+ if (range->end == ULLONG_MAX)
+ return -1;
+
+ /*
+ * entry/type
+ */
+ ret = snprintf(filename, PATH_MAX, "%s/%s", entry, "type");
+ if (ret < 0 || ret >= PATH_MAX) {
+ fprintf(stderr, "snprintf failed: %s\n", strerror(errno));
+ return -1;
+ }
+
+ filename[PATH_MAX-1] = 0;
+
+ type = parse_string_sysfs(filename);
+ if (!type)
+ return -1;
+
+ if (strcmp(type, "System RAM") == 0)
+ range->type = RANGE_RAM;
+ else if (strcmp(type, "ACPI Tables") == 0)
+ range->type = RANGE_ACPI;
+ else if (strcmp(type, "Unusable memory") == 0)
+ range->type = RANGE_RESERVED;
+ else if (strcmp(type, "reserved") == 0)
+ range->type = RANGE_RESERVED;
+ else if (strcmp(type, "Reserved") == 0)
+ range->type = RANGE_RESERVED;
+ else if (strcmp(type, "Unknown E820 type") == 0)
+ range->type = RANGE_RESERVED;
+ else if (strcmp(type, "ACPI Non-volatile Storage") == 0)
+ range->type = RANGE_ACPI_NVS;
+ else if (strcmp(type, "Uncached RAM") == 0)
+ range->type = RANGE_UNCACHED;
+ else if (strcmp(type, "Persistent Memory (legacy)") == 0)
+ range->type = RANGE_PRAM;
+ else if (strcmp(type, "Persistent Memory") == 0)
+ range->type = RANGE_PMEM;
+ else {
+ fprintf(stderr, "Unknown type (%s) while parsing %s. Please "
+ "report this as bug. Using RANGE_RESERVED now.\n",
+ type, filename);
+ range->type = RANGE_RESERVED;
+ }
+
+ return 0;
+}
+
+/* documentation: firmware_memmap.h */
+int compare_ranges(const void *first, const void *second)
+{
+ const struct memory_range *first_range = first;
+ const struct memory_range *second_range = second;
+
+ /*
+ * don't use the "first_range->start - second_range->start"
+ * notation because unsigned long long might overflow
+ */
+ if (first_range->start > second_range->start)
+ return 1;
+ else if (first_range->start < second_range->start)
+ return -1;
+ else /* first_range->start == second_range->start */
+ return 0;
+}
+
+/* documentation: firmware_memmap.h */
+int have_sys_firmware_memmap(void)
+{
+ int ret;
+ struct stat mystat;
+
+ ret = stat(FIRMWARE_MEMMAP_DIR, &mystat);
+ if (ret != 0)
+ return 0;
+
+ return S_ISDIR(mystat.st_mode);
+}
+
+/* documentation: firmware_memmap.h */
+int get_firmware_memmap_ranges(struct memory_range *range, size_t *ranges)
+{
+ DIR *firmware_memmap_dir = NULL;
+ struct dirent *dirent;
+ int i = 0;
+
+ /* argument checking */
+ if (!range || !ranges) {
+ fprintf(stderr, "%s: Invalid arguments.\n", __FUNCTION__);
+ return -1;
+ }
+
+ /* open the directory */
+ firmware_memmap_dir = opendir(FIRMWARE_MEMMAP_DIR);
+ if (!firmware_memmap_dir) {
+ perror("Could not open \"" FIRMWARE_MEMMAP_DIR "\"");
+ goto error;
+ }
+
+ /* parse the entries */
+ while ((dirent = readdir(firmware_memmap_dir)) != NULL) {
+ int ret;
+ char full_path[PATH_MAX];
+
+ /* array overflow check */
+ if ((size_t)i >= *ranges) {
+ fprintf(stderr, "The firmware provides more entries "
+ "allowed (%zd). Please report that as bug.\n",
+ *ranges);
+ goto error;
+ }
+
+ /* exclude '.' and '..' */
+ if (dirent->d_name[0] && dirent->d_name[0] == '.') {
+ continue;
+ }
+
+ snprintf(full_path, PATH_MAX, "%s/%s", FIRMWARE_MEMMAP_DIR,
+ dirent->d_name);
+ full_path[PATH_MAX-1] = 0;
+ ret = parse_memmap_entry(full_path, &range[i]);
+ if (ret < 0) {
+ goto error;
+ }
+
+ i++;
+ }
+
+ /* close the dir as we don't need it any more */
+ closedir(firmware_memmap_dir);
+
+ /* update the number of ranges for the caller */
+ *ranges = i;
+
+ /* and finally sort the entries with qsort */
+ qsort(range, *ranges, sizeof(struct memory_range), compare_ranges);
+
+ return 0;
+
+error:
+ if (firmware_memmap_dir) {
+ closedir(firmware_memmap_dir);
+ }
+ return -1;
+}
+
diff --git a/kexec/firmware_memmap.h b/kexec/firmware_memmap.h
new file mode 100644
index 0000000..eac0ddb
--- /dev/null
+++ b/kexec/firmware_memmap.h
@@ -0,0 +1,76 @@
+/*
+ * firmware_memmap.c: Read /sys/firmware/memmap
+ *
+ * Created by: Bernhard Walle (bernhard.walle@gmx.de)
+ * Copyright (C) SUSE LINUX Products GmbH, 2008. All rights reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#ifndef FIRMWARE_MEMMAP_H
+#define FIRMWARE_MEMMAP_H
+
+#include "kexec.h"
+
+/**
+ * Reads the /sys/firmware/memmap interface, documented in
+ * Documentation/ABI/testing/sysfs-firmware-memmap (kernel tree).
+ *
+ * The difference between /proc/iomem and /sys/firmware/memmap is that
+ * /sys/firmware/memmap provides the raw memory map, provided by the
+ * firmware of the system. That memory map should be passed to a kexec'd
+ * kernel because the behaviour should be the same as a normal booted kernel,
+ * so any limitation (e.g. by the user providing the mem command line option)
+ * should not be passed to the kexec'd kernel.
+ *
+ * The parsing of the code is independent of the architecture. However, the
+ * actual architecture-specific code might postprocess the code a bit, like
+ * x86 does.
+ */
+
+/**
+ * Compares two memory ranges according to their start address. This function
+ * can be used with qsort() as @c compar function.
+ *
+ * @param[in] first a pointer to the first memory range
+ * @param[in] second a pointer to the second memory range
+ * @return 0 if @p first and @p second have the same start address,
+ * a value less then 0 if the start address of @p first is less than
+ * the start address of @p second, and a value greater than 0 if
+ * the opposite is in case.
+ */
+int compare_ranges(const void *first, const void *second);
+
+/**
+ * Checks if the kernel provides the /sys/firmware/memmap interface.
+ * It makes sense to use that function in advance before calling
+ * get_firmware_memmap_ranges() because the latter function prints an error
+ * if it cannot open the directory. If have_sys_firmware_memmap() returns
+ * false, then one can use the old /proc/iomem interface (for older kernels).
+ */
+int have_sys_firmware_memmap(void);
+
+/**
+ * Parses the /sys/firmware/memmap memory map.
+ *
+ * @param[out] range a pointer to an array of type struct memory_range with
+ * at least *range entries
+ * @param[in,out] ranges a pointer to an integer that holds the number of
+ * entries which range contains (at least). After successful
+ * return, the number of actual entries will be written.
+ * @return 0 on success, -1 on failure.
+ */
+int get_firmware_memmap_ranges(struct memory_range *range, size_t *ranges);
+
+
+#endif /* FIRMWARE_MEMMAP_H */
diff --git a/kexec/fs2dt.c b/kexec/fs2dt.c
new file mode 100644
index 0000000..993b73b
--- /dev/null
+++ b/kexec/fs2dt.c
@@ -0,0 +1,852 @@
+/*
+ * fs2dt: creates a flattened device-tree
+ *
+ * Copyright (C) 2004,2005 Milton D Miller II, IBM Corporation
+ * Copyright (C) 2005 R Sharada (sharada@in.ibm.com), IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _GNU_SOURCE
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <fcntl.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <stdio.h>
+#include "kexec.h"
+#include "fs2dt.h"
+#include "libfdt/fdt.h"
+
+#define MAXPATH 1024 /* max path name length */
+#define NAMESPACE 16384 /* max bytes for property names */
+#define INIT_TREE_WORDS 65536 /* Initial num words for prop values */
+#define MEMRESERVE 256 /* max number of reserved memory blocks */
+#define MEM_RANGE_CHUNK_SZ 2048 /* Initial num dwords for mem ranges */
+
+static char pathname[MAXPATH];
+static char propnames[NAMESPACE] = { 0 };
+static unsigned *dt_base, *dt;
+static unsigned int dt_cur_size;
+static unsigned long long mem_rsrv[2*MEMRESERVE] = { 0ULL, 0ULL };
+
+static int crash_param = 0;
+static char local_cmdline[COMMAND_LINE_SIZE] = { "" };
+
+extern unsigned char reuse_initrd;
+
+/* Used for enabling printing message from purgatory code
+ * Only has implemented for PPC64 */
+int my_debug;
+int dt_no_old_root;
+
+/* This provides the behaviour of hte existing ppc64 implementation */
+static void pad_structure_block(size_t len) {
+#ifdef NEED_STRUCTURE_BLOCK_EXTRA_PAD
+ if ((len >= 8) && ((unsigned long)dt & 0x4))
+ dt++;
+#endif
+}
+
+/* Before we add something to the dt, reserve N words using this.
+ * If there isn't enough room, it's realloced -- and you don't overflow and
+ * splat bits of your heap.
+ */
+static void dt_reserve(unsigned **dt_ptr, unsigned words)
+{
+ unsigned int sz = INIT_TREE_WORDS;
+
+ if (sz < words)
+ sz = words;
+
+ if (((*dt_ptr - dt_base) + words) >= dt_cur_size) {
+ int offset;
+ unsigned int new_size = dt_cur_size + sz;
+ unsigned *new_dt = realloc(dt_base, new_size*4);
+
+ if (!new_dt)
+ die("unrecoverable error: Can't realloc %d bytes for "
+ "device tree\n", new_size*4);
+ offset = *dt_ptr - dt_base;
+ dt_base = new_dt;
+ dt_cur_size = new_size;
+ *dt_ptr = dt_base + offset;
+ memset(*dt_ptr, 0, (new_size - offset)*4);
+ }
+}
+
+void reserve(unsigned long long where, unsigned long long length)
+{
+ size_t offset;
+
+ for (offset = 0; be64_to_cpu(mem_rsrv[offset + 1]); offset += 2)
+ ;
+
+ if (offset + 4 >= 2 * MEMRESERVE)
+ die("unrecoverable error: exhasuted reservation meta data\n");
+
+ mem_rsrv[offset] = cpu_to_be64(where);
+ mem_rsrv[offset + 1] = cpu_to_be64(length);
+ mem_rsrv[offset + 2] = mem_rsrv[offset + 3] = cpu_to_be64(0);
+}
+
+/* look for properties we need to reserve memory space for */
+static void checkprop(char *name, unsigned *data, int len)
+{
+ static unsigned long long base, size, end;
+
+ if ((data == NULL) && (base || size || end))
+ die("unrecoverable error: no property data");
+ else if (!strcmp(name, "linux,rtas-base"))
+ base = be32_to_cpu(*data);
+ else if (!strcmp(name, "opal-base-address"))
+ base = be64_to_cpu(*(unsigned long long *)data);
+ else if (!strcmp(name, "opal-runtime-size"))
+ size = be64_to_cpu(*(unsigned long long *)data);
+ else if (!strcmp(name, "linux,tce-base"))
+ base = be64_to_cpu(*(unsigned long long *) data);
+ else if (!strcmp(name, "rtas-size") ||
+ !strcmp(name, "linux,tce-size"))
+ size = be32_to_cpu(*data);
+ else if (reuse_initrd && !strcmp(name, "linux,initrd-start")) {
+ if (len == 8)
+ base = be64_to_cpu(*(unsigned long long *) data);
+ else
+ base = be32_to_cpu(*data);
+ } else if (reuse_initrd && !strcmp(name, "linux,initrd-end")) {
+ if (len == 8)
+ end = be64_to_cpu(*(unsigned long long *) data);
+ else
+ end = be32_to_cpu(*data);
+ }
+
+ if (size && end)
+ die("unrecoverable error: size and end set at same time\n");
+ if (base && size) {
+ reserve(base, size);
+ base = size = 0;
+ }
+ if (base && end) {
+ reserve(base, end-base);
+ base = end = 0;
+ }
+}
+
+/*
+ * return the property index for a property name, creating a new one
+ * if needed.
+ */
+static unsigned propnum(const char *name)
+{
+ unsigned offset = 0;
+
+ while(propnames[offset])
+ if (strcmp(name, propnames+offset))
+ offset += strlen(propnames+offset)+1;
+ else
+ return offset;
+
+ if (NAMESPACE - offset < strlen(name) + 1)
+ die("unrecoverable error: propnames overrun\n");
+
+ strcpy(propnames+offset, name);
+
+ return offset;
+}
+
+/*
+ * Add ranges by comparing 'base' and 'end' addresses with usable
+ * memory ranges. Returns the number of ranges added. Each range added
+ * increments 'idx' by 2.
+ */
+static uint64_t add_ranges(uint64_t **ranges, int *ranges_size, int idx,
+ uint64_t base, uint64_t end)
+{
+ uint64_t loc_base, loc_end, rngs_cnt = 0;
+ size_t range;
+ int add = 0;
+
+ for (range = 0; range < usablemem_rgns.size; range++) {
+ loc_base = usablemem_rgns.ranges[range].start;
+ loc_end = usablemem_rgns.ranges[range].end;
+ if (loc_base >= base && loc_end <= end) {
+ add = 1;
+ } else if (base < loc_end && end > loc_base) {
+ if (loc_base < base)
+ loc_base = base;
+ if (loc_end > end)
+ loc_end = end;
+ add = 1;
+ }
+
+ if (add) {
+ if (idx >= ((*ranges_size) - 2)) {
+ (*ranges_size) += MEM_RANGE_CHUNK_SZ;
+ *ranges = realloc(*ranges, (*ranges_size)*8);
+ if (!(*ranges))
+ die("unrecoverable error: can't realloc"
+ "%d bytes for ranges.\n",
+ (*ranges_size)*8);
+ }
+ (*ranges)[idx++] = cpu_to_be64(loc_base);
+ (*ranges)[idx++] = cpu_to_be64(loc_end - loc_base);
+
+ rngs_cnt++;
+ }
+ }
+
+ return rngs_cnt;
+}
+
+#ifdef HAVE_DYNAMIC_MEMORY
+static void add_dyn_reconf_usable_mem_property__(int fd)
+{
+ char fname[MAXPATH], *bname;
+ char buf[32];
+ uint32_t lmbs_in_set = 1;
+ uint64_t *ranges;
+ int ranges_size = MEM_RANGE_CHUNK_SZ;
+ uint64_t base, end, rngs_cnt;
+ size_t i, j;
+ int rlen = 0;
+ int tmp_indx;
+
+ strcpy(fname, pathname);
+ bname = strrchr(fname, '/');
+ bname[0] = '\0';
+ bname = strrchr(fname, '/');
+ if (strncmp(bname, "/ibm,dynamic-reconfiguration-memory", 36))
+ return;
+
+ if (lseek(fd, 4, SEEK_SET) < 0)
+ die("unrecoverable error: error seeking in \"%s\": %s\n",
+ pathname, strerror(errno));
+
+ ranges = malloc(ranges_size*8);
+ if (!ranges)
+ die("unrecoverable error: can't alloc %d bytes for ranges.\n",
+ ranges_size*8);
+
+ rlen = 0;
+ for (i = 0; i < num_of_lmb_sets; i++) {
+ if (read(fd, buf, LMB_ENTRY_SIZE) < 0)
+ die("unrecoverable error: error reading \"%s\": %s\n",
+ pathname, strerror(errno));
+
+ /*
+ * If the property is ibm,dynamic-memory-v2, the first 4 bytes
+ * tell the number of sequential LMBs in this entry. Else, if
+ * the property is ibm,dynamic-memory, each entry represents
+ * one LMB. Make sure to add an entry for each LMB as kernel
+ * looks for a counter for every LMB.
+ */
+ if (is_dyn_mem_v2)
+ lmbs_in_set = be32_to_cpu(((unsigned int *)buf)[0]);
+
+ base = be64_to_cpu(*((uint64_t *)&buf[DRCONF_ADDR]));
+ for (j = 0; j < lmbs_in_set; j++) {
+ end = base + lmb_size;
+ if (~0ULL - base < end) {
+ die("unrecoverable error: mem property"
+ " overflow\n");
+ }
+
+ tmp_indx = rlen++;
+
+ rngs_cnt = add_ranges(&ranges, &ranges_size, rlen,
+ base, end);
+ if (rngs_cnt == 0) {
+ /* We still need to add a counter for every LMB
+ * because the kernel parsing code is dumb. We
+ * just have a zero in this case, with no
+ * following base/len.
+ */
+ ranges[tmp_indx] = 0;
+
+ /* rlen is already just tmp_indx+1 as we didn't
+ * write anything. Check array size here, as we
+ * will probably go on writing zeros for a while
+ */
+ if (rlen >= (ranges_size-1)) {
+ ranges_size += MEM_RANGE_CHUNK_SZ;
+ ranges = realloc(ranges, ranges_size*8);
+ if (!ranges)
+ die("unrecoverable error: can't"
+ " realloc %d bytes for"
+ " ranges.\n",
+ ranges_size*8);
+ }
+ } else {
+ /* Store the count of (base, size) duple */
+ ranges[tmp_indx] = cpu_to_be64(rngs_cnt);
+ rlen += rngs_cnt * 2;
+ }
+
+ base = end;
+ }
+ }
+
+ rlen = rlen * sizeof(uint64_t);
+ /*
+ * Add linux,drconf-usable-memory property.
+ */
+ dt_reserve(&dt, 4+((rlen + 3)/4));
+ *dt++ = cpu_to_be32(FDT_PROP);
+ *dt++ = cpu_to_be32(rlen);
+ *dt++ = cpu_to_be32(propnum("linux,drconf-usable-memory"));
+ pad_structure_block(rlen);
+ memcpy(dt, ranges, rlen);
+ free(ranges);
+ dt += (rlen + 3)/4;
+}
+
+static void add_dyn_reconf_usable_mem_property(struct dirent *dp, int fd)
+{
+ if ((!strcmp(dp->d_name, "ibm,dynamic-memory-v2") ||
+ !strcmp(dp->d_name, "ibm,dynamic-memory")) && usablemem_rgns.size)
+ add_dyn_reconf_usable_mem_property__(fd);
+}
+#else
+static void add_dyn_reconf_usable_mem_property(struct dirent *dp, int fd) {}
+#endif
+
+static void add_usable_mem_property(int fd, size_t len)
+{
+ char fname[MAXPATH], *bname;
+ uint64_t buf[2];
+ uint64_t *ranges;
+ int ranges_size = MEM_RANGE_CHUNK_SZ;
+ uint64_t base, end, rngs_cnt;
+ int rlen = 0;
+
+ strcpy(fname, pathname);
+ bname = strrchr(fname,'/');
+ bname[0] = '\0';
+ bname = strrchr(fname,'/');
+ if (strncmp(bname, "/memory@", 8) && strcmp(bname, "/memory"))
+ return;
+
+ if (len < sizeof(buf))
+ die("unrecoverable error: not enough data for mem property\n");
+
+ if (lseek(fd, 0, SEEK_SET) < 0)
+ die("unrecoverable error: error seeking in \"%s\": %s\n",
+ pathname, strerror(errno));
+ if (read(fd, buf, sizeof(buf)) != sizeof(buf))
+ die("unrecoverable error: error reading \"%s\": %s\n",
+ pathname, strerror(errno));
+
+ base = be64_to_cpu(buf[0]);
+ end = be64_to_cpu(buf[1]);
+ if (~0ULL - base < end)
+ die("unrecoverable error: mem property overflow\n");
+ end += base;
+
+ ranges = malloc(ranges_size * sizeof(*ranges));
+ if (!ranges)
+ die("unrecoverable error: can't alloc %zu bytes for ranges.\n",
+ ranges_size * sizeof(*ranges));
+
+ rngs_cnt = add_ranges(&ranges, &ranges_size, rlen, base, end);
+ rlen += rngs_cnt * 2;
+
+ if (!rlen) {
+ /*
+ * User did not pass any ranges for thsi region. Hence, write
+ * (0,0) duple in linux,usable-memory property such that
+ * this region will be ignored.
+ */
+ ranges[rlen++] = 0;
+ ranges[rlen++] = 0;
+ }
+
+ rlen = rlen * sizeof(*ranges);
+ /*
+ * No add linux,usable-memory property.
+ */
+ dt_reserve(&dt, 4+((rlen + 3)/4));
+ *dt++ = cpu_to_be32(FDT_PROP);
+ *dt++ = cpu_to_be32(rlen);
+ *dt++ = cpu_to_be32(propnum("linux,usable-memory"));
+ pad_structure_block(rlen);
+ memcpy(dt, ranges, rlen);
+ free(ranges);
+ dt += (rlen + 3)/4;
+}
+
+/* put all properties (files) in the property structure */
+static void putprops(char *fn, struct dirent **nlist, int numlist)
+{
+ struct dirent *dp;
+ int i = 0, fd;
+ off_t len;
+ off_t slen;
+ struct stat statbuf;
+
+ for (i = 0; i < numlist; i++) {
+ dp = nlist[i];
+ strcpy(fn, dp->d_name);
+
+ if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
+ continue;
+
+ /* Empirically, this seems to need to be ecluded.
+ * Observed on ARM with 3.6-rc2 kernel
+ */
+ if (!strcmp(dp->d_name, "name"))
+ continue;
+
+ if (lstat(pathname, &statbuf))
+ die("unrecoverable error: could not stat \"%s\": %s\n",
+ pathname, strerror(errno));
+
+ if (!crash_param && !strcmp(fn,"linux,crashkernel-base"))
+ continue;
+
+ if (!crash_param && !strcmp(fn,"linux,crashkernel-size"))
+ continue;
+
+ /*
+ * This property will be created for each node during kexec
+ * boot. So, ignore it.
+ */
+ if (!strcmp(dp->d_name, "linux,pci-domain") ||
+ !strcmp(dp->d_name, "linux,htab-base") ||
+ !strcmp(dp->d_name, "linux,htab-size") ||
+ !strcmp(dp->d_name, "linux,kernel-end"))
+ continue;
+
+ /* This property will be created/modified later in putnode()
+ * So ignore it, unless we are reusing the initrd.
+ */
+ if ((!strcmp(dp->d_name, "linux,initrd-start") ||
+ !strcmp(dp->d_name, "linux,initrd-end")) &&
+ !reuse_initrd)
+ continue;
+
+ /* This property will be created later in putnode() So
+ * ignore it now.
+ */
+ if (!strcmp(dp->d_name, "bootargs"))
+ continue;
+
+ if (! S_ISREG(statbuf.st_mode))
+ continue;
+
+ len = statbuf.st_size;
+
+ dt_reserve(&dt, 4+((len + 3)/4));
+ *dt++ = cpu_to_be32(FDT_PROP);
+ *dt++ = cpu_to_be32(len);
+ *dt++ = cpu_to_be32(propnum(fn));
+ pad_structure_block(len);
+
+ if (len) {
+ char *buf;
+
+ buf = slurp_file_len(pathname, len, &slen);
+ if (slen != len)
+ die("unrecoverable error: short read from\"%s\"\n",
+ pathname);
+
+ memcpy(dt, buf, slen);
+ free(buf);
+ }
+
+ checkprop(fn, dt, len);
+
+ dt += (len + 3)/4;
+
+ fd = open(pathname, O_RDONLY);
+ if (fd == -1)
+ die("unrecoverable error: could not open \"%s\": %s\n",
+ pathname, strerror(errno));
+
+ if (!strcmp(dp->d_name, "reg") && usablemem_rgns.size)
+ add_usable_mem_property(fd, len);
+ add_dyn_reconf_usable_mem_property(dp, fd);
+ close(fd);
+ }
+
+ fn[0] = '\0';
+ checkprop(pathname, NULL, 0);
+}
+
+/*
+ * Compare function used to sort the device-tree directories
+ * This function will be passed to scandir.
+ */
+static int comparefunc(const struct dirent **dentry1,
+ const struct dirent **dentry2)
+{
+ char *str1 = (*(struct dirent **)dentry1)->d_name;
+ char *str2 = (*(struct dirent **)dentry2)->d_name;
+ char *sep1 = strchr(str1, '@');
+ char *sep2 = strchr(str2, '@');
+
+ /*
+ * strcmp scans from left to right and fails to idetify for some
+ * strings such as memory@10000000 and memory@f000000.
+ * Therefore, we get the wrong sorted order like memory@10000000 and
+ * memory@f000000.
+ */
+ if (sep1 && sep2) {
+ int baselen1 = sep1 - str1;
+ int baselen2 = sep2 - str2;
+ int len1 = strlen(str1);
+ int len2 = strlen(str2);
+
+ /*
+ * Check the base name matches, and the properties are
+ * different lengths.
+ */
+ if ((baselen1 == baselen2) && (len1 != len2) &&
+ !strncmp(str1, str2, baselen2))
+ return (len1 > len2) - (len1 < len2);
+ }
+
+ return strcmp(str1, str2);
+}
+
+/* grab root= from the old command line */
+static void dt_copy_old_root_param(void)
+{
+ FILE *fp;
+ char filename[MAXPATH];
+ char *last_cmdline = NULL;
+ char *p, *old_param;
+ size_t len = 0;
+
+ strcpy(filename, pathname);
+ strcat(filename, "bootargs");
+ fp = fopen(filename, "r");
+ if (!fp)
+ return;
+
+ if (getline(&last_cmdline, &len, fp) == -1)
+ die("unable to read %s\n", filename);
+
+ p = strstr(last_cmdline, "root=");
+ if (p) {
+ old_param = strtok(p, " ");
+ len = strlen(local_cmdline);
+ if (len != 0)
+ strcat(local_cmdline, " ");
+ strcat(local_cmdline, old_param);
+ }
+
+ if (last_cmdline)
+ free(last_cmdline);
+
+ fclose(fp);
+}
+
+/*
+ * put a node (directory) in the property structure. first properties
+ * then children.
+ */
+static void putnode(void)
+{
+ char *dn;
+ struct dirent *dp;
+ char *basename;
+ struct dirent **namelist;
+ int numlist, i;
+ struct stat statbuf;
+ int plen, ret;
+
+ numlist = scandir(pathname, &namelist, 0, comparefunc);
+ if (numlist < 0)
+ die("unrecoverable error: could not scan \"%s\": %s\n",
+ pathname, strerror(errno));
+ if (numlist == 0)
+ die("unrecoverable error: no directory entries in \"%s\"",
+ pathname);
+
+ basename = strrchr(pathname,'/') + 1;
+
+ plen = *basename ? strlen(basename) : 0;
+ /* Reserve space for string packed to words; e.g. string length 10
+ * occupies 3 words, length 12 occupies 4 (for terminating \0s).
+ * So round up & include the \0:
+ */
+ dt_reserve(&dt, 1+((plen + 4)/4));
+ *dt++ = cpu_to_be32(FDT_BEGIN_NODE);
+ strcpy((void *)dt, *basename ? basename : "");
+ dt += ((plen + 4)/4);
+
+ if (*basename)
+ strcat(pathname, "/");
+ dn = pathname + strlen(pathname);
+
+ putprops(dn, namelist, numlist);
+
+ /* Add initrd entries to the second kernel */
+ if (initrd_base && initrd_size && !strcmp(basename,"chosen/")) {
+ int len = 8;
+ uint64_t bevalue;
+
+ dt_reserve(&dt, 12); /* both props, of 6 words ea. */
+ *dt++ = cpu_to_be32(FDT_PROP);
+ *dt++ = cpu_to_be32(len);
+ *dt++ = cpu_to_be32(propnum("linux,initrd-start"));
+ pad_structure_block(len);
+
+ bevalue = cpu_to_be64(initrd_base);
+ memcpy(dt, &bevalue, len);
+ dt += (len + 3)/4;
+
+ len = 8;
+ *dt++ = cpu_to_be32(FDT_PROP);
+ *dt++ = cpu_to_be32(len);
+ *dt++ = cpu_to_be32(propnum("linux,initrd-end"));
+
+ bevalue = cpu_to_be64(initrd_base + initrd_size);
+ pad_structure_block(len);
+
+ memcpy(dt, &bevalue, len);
+ dt += (len + 3)/4;
+
+ reserve(initrd_base, initrd_size);
+ }
+
+ /*
+ * Add cmdline to the second kernel. Use the old root= cmdline if there
+ * is no root= in the new command line and there's no --dt-no-old-root
+ * option being used.
+ */
+ if (!strcmp(basename,"chosen/")) {
+ size_t result;
+ size_t cmd_len = 0;
+ char *param = NULL;
+ char filename[MAXPATH];
+ char *buff;
+ int fd;
+
+ cmd_len = strlen(local_cmdline);
+ if (cmd_len != 0) {
+ param = strstr(local_cmdline, "crashkernel=");
+ if (param)
+ crash_param = 1;
+ /* does the new cmdline have a root= ? ... */
+ param = strstr(local_cmdline, "root=");
+ }
+
+ if (!param && !dt_no_old_root)
+ dt_copy_old_root_param();
+
+ strcat(local_cmdline, " ");
+ cmd_len = strlen(local_cmdline);
+ cmd_len = cmd_len + 1;
+
+ /* add new bootargs */
+ dt_reserve(&dt, 4+((cmd_len+3)/4));
+ *dt++ = cpu_to_be32(FDT_PROP);
+ *dt++ = cpu_to_be32(cmd_len);
+ *dt++ = cpu_to_be32(propnum("bootargs"));
+ pad_structure_block(cmd_len);
+ memcpy(dt, local_cmdline,cmd_len);
+ dt += (cmd_len + 3)/4;
+
+ fprintf(stderr, "Modified cmdline:%s\n", local_cmdline);
+
+ /*
+ * Determine the platform type/stdout type, so that purgatory
+ * code can print 'I'm in purgatory' message. Currently only
+ * pseries/hvcterminal is supported.
+ */
+ ret = snprintf(filename, MAXPATH, "%sstdout-path", pathname);
+ if (ret < 0 || ret >= MAXPATH) {
+ fprintf(stderr, "snprintf failed: %s\n", strerror(errno));
+ goto no_debug;
+ }
+
+ fd = open(filename, O_RDONLY);
+ if (fd == -1) {
+ ret = snprintf(filename, MAXPATH, "%slinux,stdout-path", pathname);
+ if (ret < 0 || ret >= MAXPATH) {
+ fprintf(stderr, "snprintf failed: %s\n", strerror(errno));
+ goto no_debug;
+ }
+
+ fd = open(filename, O_RDONLY);
+ if (fd == -1) {
+ printf("Unable to find %s[linux,]stdout-path, printing from purgatory is disabled\n",
+ pathname);
+ goto no_debug;
+ }
+ }
+ if (fstat(fd, &statbuf)) {
+ printf("Unable to stat %s, printing from purgatory is disabled\n",
+ filename);
+ close(fd);
+ goto no_debug;
+
+ }
+
+ buff = malloc(statbuf.st_size);
+ if (!buff) {
+ printf("Can not allocate memory for buff\n");
+ close(fd);
+ goto no_debug;
+ }
+ result = read(fd, buff, statbuf.st_size);
+ close(fd);
+ if (result <= 0) {
+ printf("Unable to read %s, printing from purgatory is disabled\n",
+ filename);
+ goto no_debug;
+ }
+ snprintf(filename, MAXPATH, "/proc/device-tree/%s/compatible", buff);
+ fd = open(filename, O_RDONLY);
+ if (fd == -1) {
+ printf("Unable to find %s printing from purgatory is disabled\n",
+ filename);
+ goto no_debug;
+ }
+ if (fstat(fd, &statbuf)) {
+ printf("Unable to stat %s printing from purgatory is disabled\n",
+ filename);
+ close(fd);
+ goto no_debug;
+ }
+ buff = realloc(buff, statbuf.st_size);
+ if (!buff) {
+ printf("Can not allocate memory for buff\n");
+ close(fd);
+ goto no_debug;
+ }
+ result = read(fd, buff, statbuf.st_size);
+ if (result && (!strcmp(buff, "hvterm1")
+ || !strcmp(buff, "hvterm-protocol")))
+ my_debug = 1;
+ close(fd);
+ free(buff);
+ }
+
+no_debug:
+ for (i=0; i < numlist; i++) {
+ dp = namelist[i];
+ strcpy(dn, dp->d_name);
+ free(namelist[i]);
+
+ if (!strcmp(dn, ".") || !strcmp(dn, ".."))
+ continue;
+
+ if (lstat(pathname, &statbuf))
+ die("unrecoverable error: could not stat \"%s\": %s\n",
+ pathname, strerror(errno));
+
+ if (S_ISDIR(statbuf.st_mode))
+ putnode();
+ }
+
+ dt_reserve(&dt, 1);
+ *dt++ = cpu_to_be32(FDT_END_NODE);
+ dn[-1] = '\0';
+ free(namelist);
+}
+
+struct bootblock bb[1];
+
+static void add_boot_block(char **bufp, off_t *sizep)
+{
+ unsigned long len;
+ unsigned long tlen, toff;
+ char *buf;
+
+ len = _ALIGN(sizeof(bb[0]), 8);
+
+ bb->off_mem_rsvmap = cpu_to_be32(len);
+
+ for (len = 1; be64_to_cpu(mem_rsrv[len]); len += 2)
+ ;
+ len++;
+#ifdef NEED_RESERVE_DTB
+ len+= 3; /* Leave space for totalsize reservation */
+#endif
+ len *= sizeof(mem_rsrv[0]);
+
+ bb->off_dt_struct = cpu_to_be32(be32_to_cpu(bb->off_mem_rsvmap) + len);
+
+ len = dt - dt_base;
+ len *= sizeof(unsigned);
+#if (BOOT_BLOCK_VERSION >= 17)
+ bb->dt_struct_size = cpu_to_be32(len);
+#endif
+ bb->off_dt_strings = cpu_to_be32(be32_to_cpu(bb->off_dt_struct) + len);
+
+ len = propnum("");
+ bb->dt_strings_size = cpu_to_be32(len);
+ len = _ALIGN(len, 4);
+ bb->totalsize = cpu_to_be32(be32_to_cpu(bb->off_dt_strings) + len);
+
+ bb->magic = cpu_to_be32(FDT_MAGIC);
+ bb->version = cpu_to_be32(BOOT_BLOCK_VERSION);
+ bb->last_comp_version = cpu_to_be32(BOOT_BLOCK_LAST_COMP_VERSION);
+
+#ifdef NEED_RESERVE_DTB
+ reserve(0, be32_to_cpu(bb->totalsize)); /* patched later in kexec_load */
+#endif
+
+ buf = malloc(be32_to_cpu(bb->totalsize));
+ *bufp = buf;
+
+ tlen = be32_to_cpu(bb->off_mem_rsvmap);
+ memcpy(buf, bb, tlen);
+
+ toff = be32_to_cpu(bb->off_mem_rsvmap);
+ tlen = be32_to_cpu(bb->off_dt_struct) - be32_to_cpu(bb->off_mem_rsvmap);
+ memcpy(buf + toff, mem_rsrv, tlen);
+
+ toff += be32_to_cpu(bb->off_dt_struct) - be32_to_cpu(bb->off_mem_rsvmap);
+ tlen = be32_to_cpu(bb->off_dt_strings) - be32_to_cpu(bb->off_dt_struct);
+ memcpy(buf + toff, dt_base, tlen);
+
+ toff += be32_to_cpu(bb->off_dt_strings) - be32_to_cpu(bb->off_dt_struct);
+ tlen = be32_to_cpu(bb->totalsize) - be32_to_cpu(bb->off_dt_strings);
+ memcpy(buf + toff, propnames, tlen);
+
+ *sizep = toff + be32_to_cpu(bb->totalsize) -
+ be32_to_cpu(bb->off_dt_strings);
+}
+
+void create_flatten_tree(char **bufp, off_t *sizep, const char *cmdline)
+{
+ strcpy(pathname, "/proc/device-tree/");
+
+ dt_cur_size = INIT_TREE_WORDS;
+ dt_base = malloc(dt_cur_size*4);
+ if (!dt_base) {
+ die("Can't malloc %d bytes for dt struct!\n", dt_cur_size*4);
+ }
+ memset(dt_base, 0, dt_cur_size*4);
+
+ dt = dt_base;
+
+ if (cmdline)
+ strcpy(local_cmdline, cmdline);
+
+ putnode();
+ dt_reserve(&dt, 1);
+ *dt++ = cpu_to_be32(FDT_END);
+
+ add_boot_block(bufp, sizep);
+ free(dt_base);
+}
diff --git a/kexec/fs2dt.h b/kexec/fs2dt.h
new file mode 100644
index 0000000..fe24931
--- /dev/null
+++ b/kexec/fs2dt.h
@@ -0,0 +1,39 @@
+#ifndef FS2DT_H
+#define FS2DT_H
+
+#if (BOOT_BLOCK_VERSION != 2 && BOOT_BLOCK_VERSION != 17)
+#error Please add or correct definition of BOOT_BLOCK_VERSION
+#endif
+
+/* boot block as defined by the linux kernel */
+struct bootblock {
+ unsigned magic;
+ unsigned totalsize;
+ unsigned off_dt_struct;
+ unsigned off_dt_strings;
+ unsigned off_mem_rsvmap;
+ unsigned version;
+ unsigned last_comp_version;
+#if (BOOT_BLOCK_VERSION >= 2)
+ /* version 2 fields below */
+ unsigned boot_physid;
+ /* version 3 fields below */
+ unsigned dt_strings_size;
+#if (BOOT_BLOCK_VERSION >= 17)
+ /* version 17 fields below */
+ unsigned dt_struct_size;
+#endif
+#endif
+};
+
+extern struct bootblock bb[1];
+
+/* Used for enabling printing message from purgatory code
+ * Only has implemented for PPC64 */
+extern int my_debug;
+extern int dt_no_old_root;
+
+void reserve(unsigned long long where, unsigned long long length);
+void create_flatten_tree(char **, off_t *, const char *);
+
+#endif /* KEXEC_H */
diff --git a/kexec/ifdown.c b/kexec/ifdown.c
new file mode 100644
index 0000000..3ac19c1
--- /dev/null
+++ b/kexec/ifdown.c
@@ -0,0 +1,79 @@
+/*
+ * ifdown.c Find all network interfaces on the system and
+ * shut them down.
+ *
+ */
+char *v_ifdown = "@(#)ifdown.c 1.11 02-Jun-1998 miquels@cistron.nl";
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+#include <string.h>
+#include <errno.h>
+
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+
+#include <net/if.h>
+#include <netinet/in.h>
+
+/*
+ * First, we find all shaper devices and down them. Then we
+ * down all real interfaces. This is because the comment in the
+ * shaper driver says "if you down the shaper device before the
+ * attached inerface your computer will follow".
+ */
+int ifdown(void)
+{
+ struct if_nameindex *ifa, *ifp;
+ struct ifreq ifr;
+ int fd, shaper;
+
+ if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+ fprintf(stderr, "ifdown: ");
+ perror("socket");
+ goto error;
+ }
+
+ if ((ifa = if_nameindex()) == NULL) {
+ fprintf(stderr, "ifdown: ");
+ perror("if_nameindex");
+ goto error;
+ }
+
+ for (shaper = 1; shaper >= 0; shaper--) {
+ for (ifp = ifa; ifp->if_index; ifp++) {
+
+ if ((strncmp(ifp->if_name, "shaper", 6) == 0)
+ != shaper) continue;
+ if (strcmp(ifp->if_name, "lo") == 0)
+ continue;
+ if (strchr(ifp->if_name, ':') != NULL)
+ continue;
+
+ strncpy(ifr.ifr_name, ifp->if_name, IFNAMSIZ-1);
+ ifr.ifr_name[IFNAMSIZ-1] = 0;
+ if (ioctl(fd, SIOCGIFFLAGS, &ifr) < 0) {
+ fprintf(stderr, "ifdown: shutdown ");
+ perror(ifp->if_name);
+ goto error;
+ }
+ ifr.ifr_flags &= ~(IFF_UP);
+ if (ioctl(fd, SIOCSIFFLAGS, &ifr) < 0) {
+ fprintf(stderr, "ifdown: shutdown ");
+ perror(ifp->if_name);
+ goto error;
+ }
+
+ }
+ }
+
+ close(fd);
+ return 0;
+
+error:
+ close(fd);
+ return -1;
+}
diff --git a/kexec/kexec-elf-boot.c b/kexec/kexec-elf-boot.c
new file mode 100644
index 0000000..38f9056
--- /dev/null
+++ b/kexec/kexec-elf-boot.c
@@ -0,0 +1,89 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2003-2005 Eric Biederman (ebiederm@xmission.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <elf.h>
+#include <boot/elf_boot.h>
+#include <ip_checksum.h>
+#include <x86/x86-linux.h>
+#include "kexec.h"
+#include "kexec-elf.h"
+#include "kexec-elf-boot.h"
+
+
+#define UPSZ(X) _ALIGN_UP(sizeof(X), 4)
+
+static struct boot_notes {
+ Elf_Bhdr hdr;
+ Elf_Nhdr bl_hdr;
+ unsigned char bl_desc[UPSZ(BOOTLOADER)];
+ Elf_Nhdr blv_hdr;
+ unsigned char blv_desc[UPSZ(BOOTLOADER_VERSION)];
+ Elf_Nhdr cmd_hdr;
+ unsigned char command_line[0];
+} boot_notes = {
+ .hdr = {
+ .b_signature = ELF_BOOT_MAGIC,
+ .b_size = sizeof(boot_notes),
+ .b_checksum = 0,
+ .b_records = 3,
+ },
+ .bl_hdr = {
+ .n_namesz = 0,
+ .n_descsz = sizeof(BOOTLOADER),
+ .n_type = EBN_BOOTLOADER_NAME,
+ },
+ .bl_desc = BOOTLOADER,
+ .blv_hdr = {
+ .n_namesz = 0,
+ .n_descsz = sizeof(BOOTLOADER_VERSION),
+ .n_type = EBN_BOOTLOADER_VERSION,
+ },
+ .blv_desc = BOOTLOADER_VERSION,
+ .cmd_hdr = {
+ .n_namesz = 0,
+ .n_descsz = 0,
+ .n_type = EBN_COMMAND_LINE,
+ },
+};
+
+unsigned long elf_boot_notes(
+ struct kexec_info *info, unsigned long max_addr,
+ const char *cmdline, int cmdline_len)
+{
+ unsigned long note_bytes;
+ unsigned long note_base;
+ struct boot_notes *notes;
+ note_bytes = sizeof(*notes) + _ALIGN(cmdline_len, 4);
+ notes = xmalloc(note_bytes);
+ memcpy(notes, &boot_notes, sizeof(boot_notes));
+ memcpy(notes->command_line, cmdline, cmdline_len);
+ notes->hdr.b_size = note_bytes;
+ notes->cmd_hdr.n_descsz = cmdline_len;
+ notes->hdr.b_checksum = compute_ip_checksum(notes, note_bytes);
+
+ note_base = add_buffer(info, notes, note_bytes, note_bytes,
+ 4, 0, max_addr, 1);
+
+ return note_base;
+}
diff --git a/kexec/kexec-elf-boot.h b/kexec/kexec-elf-boot.h
new file mode 100644
index 0000000..cff5c61
--- /dev/null
+++ b/kexec/kexec-elf-boot.h
@@ -0,0 +1,8 @@
+#ifndef KEXEC_ELF_BOOT_H
+#define KEXEC_ELF_BOOT_H
+
+unsigned long elf_boot_notes(
+ struct kexec_info *info, unsigned long max_addr,
+ const char *cmdline, int cmdline_len);
+
+#endif /* KEXEC_ELF_BOOT_H */
diff --git a/kexec/kexec-elf-core.c b/kexec/kexec-elf-core.c
new file mode 100644
index 0000000..a341fdb
--- /dev/null
+++ b/kexec/kexec-elf-core.c
@@ -0,0 +1,29 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <errno.h>
+#include <stdlib.h>
+#include "elf.h"
+#include "kexec-elf.h"
+
+
+int build_elf_core_info(const char *buf, off_t len, struct mem_ehdr *ehdr,
+ uint32_t flags)
+{
+ int result;
+ result = build_elf_info(buf, len, ehdr, flags);
+ if (result < 0) {
+ return result;
+ }
+ if ((ehdr->e_type != ET_CORE)) {
+ /* not an ELF Core */
+ fprintf(stderr, "Not ELF type ET_CORE\n");
+ return -1;
+ }
+ if (!ehdr->e_phdr) {
+ /* No program header */
+ fprintf(stderr, "No ELF program header\n");
+ return -1;
+ }
+
+ return 0;
+}
diff --git a/kexec/kexec-elf-exec.c b/kexec/kexec-elf-exec.c
new file mode 100644
index 0000000..bea7b3e
--- /dev/null
+++ b/kexec/kexec-elf-exec.c
@@ -0,0 +1,228 @@
+#include <limits.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include "elf.h"
+#include <boot/elf_boot.h>
+#include "kexec.h"
+#include "kexec-elf.h"
+
+static const int probe_debug = 0;
+
+static void load_elf_segments(struct mem_ehdr *ehdr, struct kexec_info *info, unsigned long base)
+{
+ size_t i;
+
+ /* Read in the PT_LOAD segments */
+ for(i = 0; i < ehdr->e_phnum; i++) {
+ struct mem_phdr *phdr;
+ size_t size;
+ phdr = &ehdr->e_phdr[i];
+ if (phdr->p_type != PT_LOAD) {
+ continue;
+ }
+ size = phdr->p_filesz;
+ if (size > phdr->p_memsz) {
+ size = phdr->p_memsz;
+ }
+ add_segment(info, phdr->p_data, size,
+ phdr->p_paddr + base, phdr->p_memsz);
+ }
+}
+
+static int get_elf_exec_load_base(struct mem_ehdr *ehdr, struct kexec_info *info,
+ unsigned long min, unsigned long max,
+ unsigned long align, unsigned long *base)
+{
+ unsigned long first, last;
+ size_t i;
+
+ /* Note on arm64:
+ * arm64's vmlinux has virtual address in physical address
+ * field of PT_LOAD segments. So the following validity check
+ * and relocation makes no sense on arm64.
+ */
+ if (ehdr->e_machine == EM_AARCH64)
+ return 0;
+
+ first = ULONG_MAX;
+ last = 0;
+ for(i = 0; i < ehdr->e_phnum; i++) {
+ unsigned long start, stop;
+ struct mem_phdr *phdr;
+ phdr = &ehdr->e_phdr[i];
+ if ((phdr->p_type != PT_LOAD) ||
+ (phdr->p_memsz == 0))
+ {
+ continue;
+ }
+ start = phdr->p_paddr;
+ stop = start + phdr->p_memsz;
+ if (first > start) {
+ first = start;
+ }
+ if (last < stop) {
+ last = stop;
+ }
+ if (align < phdr->p_align) {
+ align = phdr->p_align;
+ }
+ }
+
+ if ((max - min) < (last - first))
+ return -1;
+
+ if (!valid_memory_range(info, min > first ? min : first, max < last ? max : last)) {
+ unsigned long hole;
+ hole = locate_hole(info, last - first + 1, align, min, max, 1);
+ if (hole == ULONG_MAX)
+ return -1;
+
+ /* Base is the value that when added
+ * to any virtual address in the file
+ * yields it's load virtual address.
+ */
+ *base = hole - first;
+ }
+ return 0;
+}
+
+int build_elf_exec_info(const char *buf, off_t len, struct mem_ehdr *ehdr,
+ uint32_t flags)
+{
+ struct mem_phdr *phdr, *end_phdr;
+ int result;
+ result = build_elf_info(buf, len, ehdr, flags);
+ if (result < 0) {
+ return result;
+ }
+ if ((ehdr->e_type != ET_EXEC) && (ehdr->e_type != ET_DYN) &&
+ (ehdr->e_type != ET_CORE)) {
+ /* not an ELF executable */
+ if (probe_debug) {
+ fprintf(stderr, "Not ELF type ET_EXEC or ET_DYN\n");
+ }
+ return -1;
+ }
+ if (!ehdr->e_phdr) {
+ /* No program header */
+ fprintf(stderr, "No ELF program header\n");
+ return -1;
+ }
+ end_phdr = &ehdr->e_phdr[ehdr->e_phnum];
+ for(phdr = ehdr->e_phdr; phdr != end_phdr; phdr++) {
+ /* Kexec does not support loading interpreters.
+ * In addition this check keeps us from attempting
+ * to kexec ordinay executables.
+ */
+ if (phdr->p_type == PT_INTERP) {
+ fprintf(stderr, "Requires an ELF interpreter\n");
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+
+int elf_exec_load(struct mem_ehdr *ehdr, struct kexec_info *info)
+{
+ unsigned long base;
+ int result;
+
+ if (!ehdr->e_phdr) {
+ fprintf(stderr, "No program header?\n");
+ result = -1;
+ goto out;
+ }
+
+ /* If I have a dynamic executable find it's size
+ * and then find a location for it in memory.
+ */
+ base = 0;
+ if (ehdr->e_type == ET_DYN) {
+ result = get_elf_exec_load_base(ehdr, info, 0, elf_max_addr(ehdr), 0 /* align */, &base);
+ if (result < 0)
+ goto out;
+ }
+
+ load_elf_segments(ehdr, info, base);
+
+ /* Update entry point to reflect new load address*/
+ ehdr->e_entry += base;
+
+ result = 0;
+ out:
+ return result;
+}
+
+int elf_exec_load_relocatable(struct mem_ehdr *ehdr, struct kexec_info *info,
+ unsigned long reloc_min, unsigned long reloc_max,
+ unsigned long align)
+{
+ unsigned long base;
+ int result;
+
+ if (reloc_min > reloc_max) {
+ fprintf(stderr, "Bad relocation range, start=%lux > end=%lux.\n", reloc_min, reloc_max);
+ result = -1;
+ goto out;
+ }
+ if (!ehdr->e_phdr) {
+ fprintf(stderr, "No program header?\n");
+ result = -1;
+ goto out;
+ }
+
+ base = 0;
+ result = get_elf_exec_load_base(ehdr, info, reloc_min, reloc_max, align, &base);
+ if (result < 0)
+ goto out;
+
+ load_elf_segments(ehdr, info, base);
+
+ /* Update entry point to reflect new load address*/
+ ehdr->e_entry += base;
+
+ result = 0;
+ out:
+ return result;
+}
+
+void elf_exec_build_load(struct kexec_info *info, struct mem_ehdr *ehdr,
+ const char *buf, off_t len, uint32_t flags)
+{
+ int result;
+ /* Parse the Elf file */
+ result = build_elf_exec_info(buf, len, ehdr, flags);
+ if (result < 0) {
+ die("ELF exec parse failed\n");
+ }
+
+ /* Load the Elf data */
+ result = elf_exec_load(ehdr, info);
+ if (result < 0) {
+ die("ELF exec load failed\n");
+ }
+}
+
+void elf_exec_build_load_relocatable(struct kexec_info *info, struct mem_ehdr *ehdr,
+ const char *buf, off_t len, uint32_t flags,
+ unsigned long reloc_min, unsigned long reloc_max,
+ unsigned long align)
+{
+ int result;
+ /* Parse the Elf file */
+ result = build_elf_exec_info(buf, len, ehdr, flags);
+ if (result < 0) {
+ die("%s: ELF exec parse failed\n", __func__);
+ }
+
+ /* Load the Elf data */
+ result = elf_exec_load_relocatable(ehdr, info, reloc_min, reloc_max, align);
+ if (result < 0) {
+ die("%s: ELF exec load failed\n", __func__);
+ }
+} \ No newline at end of file
diff --git a/kexec/kexec-elf-rel.c b/kexec/kexec-elf-rel.c
new file mode 100644
index 0000000..0a8b4d2
--- /dev/null
+++ b/kexec/kexec-elf-rel.c
@@ -0,0 +1,553 @@
+#include <limits.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include "elf.h"
+#include <boot/elf_boot.h>
+#include "kexec.h"
+#include "kexec-elf.h"
+
+static const int probe_debug = 0;
+
+static size_t elf_sym_size(struct mem_ehdr *ehdr)
+{
+ size_t sym_size = 0;
+ if (ehdr->ei_class == ELFCLASS32) {
+ sym_size = sizeof(Elf32_Sym);
+ }
+ else if (ehdr->ei_class == ELFCLASS64) {
+ sym_size = sizeof(Elf64_Sym);
+ }
+ else {
+ die("Bad elf class");
+ }
+ return sym_size;
+}
+
+static size_t elf_rel_size(struct mem_ehdr *ehdr)
+{
+ size_t rel_size = 0;
+ if (ehdr->ei_class == ELFCLASS32) {
+ rel_size = sizeof(Elf32_Rel);
+ }
+ else if (ehdr->ei_class == ELFCLASS64) {
+ rel_size = sizeof(Elf64_Rel);
+ }
+ else {
+ die("Bad elf class");
+ }
+ return rel_size;
+}
+
+static size_t elf_rela_size(struct mem_ehdr *ehdr)
+{
+ size_t rel_size = 0;
+ if (ehdr->ei_class == ELFCLASS32) {
+ rel_size = sizeof(Elf32_Rela);
+ }
+ else if (ehdr->ei_class == ELFCLASS64) {
+ rel_size = sizeof(Elf64_Rela);
+ }
+ else {
+ die("Bad elf class");
+ }
+ return rel_size;
+}
+
+static struct mem_sym elf_sym(struct mem_ehdr *ehdr, const unsigned char *ptr)
+{
+ struct mem_sym sym = { 0, 0, 0, 0, 0, 0 };
+ if (ehdr->ei_class == ELFCLASS32) {
+ Elf32_Sym lsym;
+ memcpy(&lsym, ptr, sizeof(lsym));
+ sym.st_name = elf32_to_cpu(ehdr, lsym.st_name);
+ sym.st_value = elf32_to_cpu(ehdr, lsym.st_value);
+ sym.st_size = elf32_to_cpu(ehdr, lsym.st_size);
+ sym.st_info = lsym.st_info;
+ sym.st_other = lsym.st_other;
+ sym.st_shndx = elf16_to_cpu(ehdr, lsym.st_shndx);
+ }
+ else if (ehdr->ei_class == ELFCLASS64) {
+ Elf64_Sym lsym;
+ memcpy(&lsym, ptr, sizeof(lsym));
+ sym.st_name = elf32_to_cpu(ehdr, lsym.st_name);
+ sym.st_value = elf64_to_cpu(ehdr, lsym.st_value);
+ sym.st_size = elf64_to_cpu(ehdr, lsym.st_size);
+ sym.st_info = lsym.st_info;
+ sym.st_other = lsym.st_other;
+ sym.st_shndx = elf16_to_cpu(ehdr, lsym.st_shndx);
+ }
+ else {
+ die("Bad elf class");
+ }
+ return sym;
+}
+
+static struct mem_rela elf_rel(struct mem_ehdr *ehdr, const unsigned char *ptr)
+{
+ struct mem_rela rela = { 0, 0, 0, 0 };
+ if (ehdr->ei_class == ELFCLASS32) {
+ Elf32_Rel lrel;
+ memcpy(&lrel, ptr, sizeof(lrel));
+ rela.r_offset = elf32_to_cpu(ehdr, lrel.r_offset);
+ rela.r_sym = ELF32_R_SYM(elf32_to_cpu(ehdr, lrel.r_info));
+ rela.r_type = ELF32_R_TYPE(elf32_to_cpu(ehdr, lrel.r_info));
+ rela.r_addend = 0;
+ }
+ else if (ehdr->ei_class == ELFCLASS64) {
+ Elf64_Rel lrel;
+ memcpy(&lrel, ptr, sizeof(lrel));
+ rela.r_offset = elf64_to_cpu(ehdr, lrel.r_offset);
+ rela.r_sym = ELF64_R_SYM(elf64_to_cpu(ehdr, lrel.r_info));
+ rela.r_type = ELF64_R_TYPE(elf64_to_cpu(ehdr, lrel.r_info));
+ rela.r_addend = 0;
+ }
+ else {
+ die("Bad elf class");
+ }
+ return rela;
+}
+
+static struct mem_rela elf_rela(struct mem_ehdr *ehdr, const unsigned char *ptr)
+{
+ struct mem_rela rela = { 0, 0, 0, 0 };
+ if (ehdr->ei_class == ELFCLASS32) {
+ Elf32_Rela lrela;
+ memcpy(&lrela, ptr, sizeof(lrela));
+ rela.r_offset = elf32_to_cpu(ehdr, lrela.r_offset);
+ rela.r_sym = ELF32_R_SYM(elf32_to_cpu(ehdr, lrela.r_info));
+ rela.r_type = ELF32_R_TYPE(elf32_to_cpu(ehdr, lrela.r_info));
+ rela.r_addend = elf32_to_cpu(ehdr, lrela.r_addend);
+ }
+ else if (ehdr->ei_class == ELFCLASS64) {
+ Elf64_Rela lrela;
+ memcpy(&lrela, ptr, sizeof(lrela));
+ rela.r_offset = elf64_to_cpu(ehdr, lrela.r_offset);
+ rela.r_sym = ELF64_R_SYM(elf64_to_cpu(ehdr, lrela.r_info));
+ rela.r_type = ELF64_R_TYPE(elf64_to_cpu(ehdr, lrela.r_info));
+ rela.r_addend = elf64_to_cpu(ehdr, lrela.r_addend);
+ }
+ else {
+ die("Bad elf class");
+ }
+ return rela;
+}
+
+int build_elf_rel_info(const char *buf, off_t len, struct mem_ehdr *ehdr,
+ uint32_t flags)
+{
+ int result;
+ result = build_elf_info(buf, len, ehdr, flags);
+ if (result < 0) {
+ return result;
+ }
+ if (ehdr->e_type != ET_REL) {
+ /* not an ELF relocate object */
+ if (probe_debug) {
+ fprintf(stderr, "Not ELF type ET_REL\n");
+ fprintf(stderr, "ELF Type: %x\n", ehdr->e_type);
+ }
+ return -1;
+ }
+ if (!ehdr->e_shdr) {
+ /* No section headers */
+ if (probe_debug) {
+ fprintf(stderr, "No ELF section headers\n");
+ }
+ return -1;
+ }
+ if (!machine_verify_elf_rel(ehdr)) {
+ /* It does not meant the native architecture constraints */
+ if (probe_debug) {
+ fprintf(stderr, "ELF architecture constraint failure\n");
+ }
+ return -1;
+ }
+ return 0;
+}
+
+static unsigned long get_section_addralign(struct mem_shdr *shdr)
+{
+ return (shdr->sh_addralign == 0) ? 1 : shdr->sh_addralign;
+}
+
+int elf_rel_load(struct mem_ehdr *ehdr, struct kexec_info *info,
+ unsigned long min, unsigned long max, int end)
+{
+ struct mem_shdr *shdr, *shdr_end, *entry_shdr;
+ unsigned long entry;
+ int result;
+ unsigned char *buf;
+ unsigned long buf_align, bufsz, bss_align, bsssz, bss_pad;
+ unsigned long buf_addr, data_addr, bss_addr;
+
+ if (max > elf_max_addr(ehdr)) {
+ max = elf_max_addr(ehdr);
+ }
+ if (!ehdr->e_shdr) {
+ fprintf(stderr, "No section header?\n");
+ result = -1;
+ goto out;
+ }
+ shdr_end = &ehdr->e_shdr[ehdr->e_shnum];
+
+ /* Find which section entry is in */
+ entry_shdr = NULL;
+ entry = ehdr->e_entry;
+ for(shdr = ehdr->e_shdr; shdr != shdr_end; shdr++) {
+ if (!(shdr->sh_flags & SHF_ALLOC)) {
+ continue;
+ }
+ if (!(shdr->sh_flags & SHF_EXECINSTR)) {
+ continue;
+ }
+ /* Make entry section relative */
+ if ((shdr->sh_addr <= ehdr->e_entry) &&
+ ((shdr->sh_addr + shdr->sh_size) > ehdr->e_entry)) {
+ entry_shdr = shdr;
+ entry -= shdr->sh_addr;
+ break;
+ }
+ }
+
+ /* Find the memory footprint of the relocatable object */
+ buf_align = 1;
+ bss_align = 1;
+ bufsz = 0;
+ bsssz = 0;
+ for(shdr = ehdr->e_shdr; shdr != shdr_end; shdr++) {
+ if (!(shdr->sh_flags & SHF_ALLOC)) {
+ continue;
+ }
+ if (shdr->sh_type != SHT_NOBITS) {
+ unsigned long align;
+ align = get_section_addralign(shdr);
+ /* See if I need more alignment */
+ if (buf_align < align) {
+ buf_align = align;
+ }
+ /* Now align bufsz */
+ bufsz = _ALIGN(bufsz, align);
+ /* And now add our buffer */
+ bufsz += shdr->sh_size;
+ }
+ else {
+ unsigned long align;
+ align = get_section_addralign(shdr);
+ /* See if I need more alignment */
+ if (bss_align < align) {
+ bss_align = align;
+ }
+ /* Now align bsssz */
+ bsssz = _ALIGN(bsssz, align);
+ /* And now add our buffer */
+ bsssz += shdr->sh_size;
+ }
+ }
+ if (buf_align < bss_align) {
+ buf_align = bss_align;
+ }
+ bss_pad = 0;
+ if (bufsz & (bss_align - 1)) {
+ bss_pad = bss_align - (bufsz & (bss_align - 1));
+ }
+
+ /* Allocate where we will put the relocated object */
+ buf = xmalloc(bufsz);
+ buf_addr = add_buffer(info, buf, bufsz, bufsz + bss_pad + bsssz,
+ buf_align, min, max, end);
+ ehdr->rel_addr = buf_addr;
+ ehdr->rel_size = bufsz + bss_pad + bsssz;
+
+ /* Walk through and find an address for each SHF_ALLOC section */
+ data_addr = buf_addr;
+ bss_addr = buf_addr + bufsz + bss_pad;
+ for(shdr = ehdr->e_shdr; shdr != shdr_end; shdr++) {
+ unsigned long align;
+ if (!(shdr->sh_flags & SHF_ALLOC)) {
+ continue;
+ }
+ align = get_section_addralign(shdr);
+ if (shdr->sh_type != SHT_NOBITS) {
+ unsigned long off;
+ /* Adjust the address */
+ data_addr = _ALIGN(data_addr, align);
+
+ /* Update the section */
+ off = data_addr - buf_addr;
+ memcpy(buf + off, shdr->sh_data, shdr->sh_size);
+ shdr->sh_addr = data_addr;
+ shdr->sh_data = buf + off;
+
+ /* Advance to the next address */
+ data_addr += shdr->sh_size;
+ } else {
+ /* Adjust the address */
+ bss_addr = _ALIGN(bss_addr, align);
+
+ /* Update the section */
+ shdr->sh_addr = bss_addr;
+
+ /* Advance to the next address */
+ bss_addr += shdr->sh_size;
+ }
+ }
+ /* Compute the relocated value for entry, and load it */
+ if (entry_shdr) {
+ entry += entry_shdr->sh_addr;
+ ehdr->e_entry = entry;
+ }
+ info->entry = (void *)entry;
+
+ /* Now that the load address is known apply relocations */
+ for(shdr = ehdr->e_shdr; shdr != shdr_end; shdr++) {
+ struct mem_shdr *section, *symtab;
+ const unsigned char *strtab;
+ size_t rel_size;
+ const unsigned char *ptr, *rel_end;
+ if ((shdr->sh_type != SHT_RELA) && (shdr->sh_type != SHT_REL)) {
+ continue;
+ }
+ if ((shdr->sh_info > ehdr->e_shnum) ||
+ (shdr->sh_link > ehdr->e_shnum))
+ {
+ die("Invalid section number\n");
+ }
+ section = &ehdr->e_shdr[shdr->sh_info];
+ symtab = &ehdr->e_shdr[shdr->sh_link];
+
+ if (!(section->sh_flags & SHF_ALLOC)) {
+ continue;
+ }
+
+ if (symtab->sh_link > ehdr->e_shnum) {
+ /* Invalid section number? */
+ continue;
+ }
+ strtab = ehdr->e_shdr[symtab->sh_link].sh_data;
+
+ rel_size = 0;
+ if (shdr->sh_type == SHT_REL) {
+ rel_size = elf_rel_size(ehdr);
+ }
+ else if (shdr->sh_type == SHT_RELA) {
+ rel_size = elf_rela_size(ehdr);
+ }
+ else {
+ die("Cannot find elf rel size\n");
+ }
+ rel_end = shdr->sh_data + shdr->sh_size;
+ for(ptr = shdr->sh_data; ptr < rel_end; ptr += rel_size) {
+ struct mem_rela rel = {0};
+ struct mem_sym sym;
+ const void *location;
+ const unsigned char *name;
+ unsigned long address, value, sec_base;
+ if (shdr->sh_type == SHT_REL) {
+ rel = elf_rel(ehdr, ptr);
+ }
+ else if (shdr->sh_type == SHT_RELA) {
+ rel = elf_rela(ehdr, ptr);
+ }
+ /* the location to change */
+ location = section->sh_data + rel.r_offset;
+
+ /* The final address of that location */
+ address = section->sh_addr + rel.r_offset;
+
+ /* The relevant symbol */
+ sym = elf_sym(ehdr, symtab->sh_data + (rel.r_sym * elf_sym_size(ehdr)));
+
+ if (sym.st_name) {
+ name = strtab + sym.st_name;
+ }
+ else {
+ name = ehdr->e_shdr[ehdr->e_shstrndx].sh_data;
+ name += ehdr->e_shdr[sym.st_shndx].sh_name;
+ }
+
+ dbgprintf("sym: %10s info: %02x other: %02x shndx: %x value: %llx size: %llx\n",
+ name,
+ sym.st_info,
+ sym.st_other,
+ sym.st_shndx,
+ sym.st_value,
+ sym.st_size);
+
+ if (sym.st_shndx == STN_UNDEF) {
+ /*
+ * NOTE: ppc64 elf .ro shows up a UNDEF section.
+ * From Elf 1.2 Spec:
+ * Relocation Entries: If the index is STN_UNDEF,
+ * the undefined symbol index, the relocation uses 0
+ * as the "symbol value".
+ * TOC symbols appear as undefined but should be
+ * resolved as well. Their type is STT_NOTYPE so allow
+ * such symbols to be processed.
+ */
+ if (ELF32_ST_TYPE(sym.st_info) != STT_NOTYPE)
+ die("Undefined symbol: %s\n", name);
+ }
+ sec_base = 0;
+ if (sym.st_shndx == SHN_COMMON) {
+ die("symbol: '%s' in common section\n",
+ name);
+ }
+ else if (sym.st_shndx == SHN_ABS) {
+ sec_base = 0;
+ }
+ else if (sym.st_shndx > ehdr->e_shnum) {
+ die("Invalid section: %d for symbol %s\n",
+ sym.st_shndx, name);
+ }
+ else {
+ sec_base = ehdr->e_shdr[sym.st_shndx].sh_addr;
+ }
+ value = sym.st_value;
+ value += sec_base;
+ value += rel.r_addend;
+
+ dbgprintf("sym: %s value: %lx addr: %lx\n",
+ name, value, address);
+
+ machine_apply_elf_rel(ehdr, &sym, rel.r_type,
+ (void *)location, address, value);
+ }
+ }
+ result = 0;
+ out:
+ return result;
+}
+
+void elf_rel_build_load(struct kexec_info *info, struct mem_ehdr *ehdr,
+ const char *buf, off_t len, unsigned long min, unsigned long max,
+ int end, uint32_t flags)
+{
+ int result;
+
+ /* Parse the Elf file */
+ result = build_elf_rel_info(buf, len, ehdr, flags);
+ if (result < 0) {
+ die("ELF rel parse failed\n");
+ }
+ /* Load the Elf data */
+ result = elf_rel_load(ehdr, info, min, max, end);
+ if (result < 0) {
+ die("ELF rel load failed\n");
+ }
+}
+
+int elf_rel_find_symbol(struct mem_ehdr *ehdr,
+ const char *name, struct mem_sym *ret_sym)
+{
+ struct mem_shdr *shdr, *shdr_end;
+
+ if (!ehdr->e_shdr) {
+ /* "No section header? */
+ return -1;
+ }
+ /* Walk through the sections and find the symbol table */
+ shdr_end = &ehdr->e_shdr[ehdr->e_shnum];
+ for (shdr = ehdr->e_shdr; shdr != shdr_end; shdr++) {
+ const char *strtab;
+ size_t sym_size;
+ const unsigned char *ptr, *sym_end;
+ if (shdr->sh_type != SHT_SYMTAB) {
+ continue;
+ }
+ if (shdr->sh_link > ehdr->e_shnum) {
+ /* Invalid strtab section number? */
+ continue;
+ }
+ strtab = (char *)ehdr->e_shdr[shdr->sh_link].sh_data;
+ /* Walk through the symbol table and find the symbol */
+ sym_size = elf_sym_size(ehdr);
+ sym_end = shdr->sh_data + shdr->sh_size;
+ for(ptr = shdr->sh_data; ptr < sym_end; ptr += sym_size) {
+ struct mem_sym sym;
+ sym = elf_sym(ehdr, ptr);
+ if (ELF32_ST_BIND(sym.st_info) != STB_GLOBAL) {
+ continue;
+ }
+ if (strcmp(strtab + sym.st_name, name) != 0) {
+ continue;
+ }
+ if ((sym.st_shndx == STN_UNDEF) ||
+ (sym.st_shndx > ehdr->e_shnum))
+ {
+ die("Symbol: %s has Bad section index %d\n",
+ name, sym.st_shndx);
+ }
+ *ret_sym = sym;
+ return 0;
+ }
+ }
+ /* I did not find it :( */
+ return -1;
+
+}
+
+unsigned long elf_rel_get_addr(struct mem_ehdr *ehdr, const char *name)
+{
+ struct mem_shdr *shdr;
+ struct mem_sym sym;
+ int result;
+ result = elf_rel_find_symbol(ehdr, name, &sym);
+ if (result < 0) {
+ die("Symbol: %s not found cannot retrive it's address\n",
+ name);
+ }
+ shdr = &ehdr->e_shdr[sym.st_shndx];
+ return shdr->sh_addr + sym.st_value;
+}
+
+void elf_rel_set_symbol(struct mem_ehdr *ehdr,
+ const char *name, const void *buf, size_t size)
+{
+ unsigned char *sym_buf;
+ struct mem_shdr *shdr;
+ struct mem_sym sym;
+ int result;
+
+ result = elf_rel_find_symbol(ehdr, name, &sym);
+ if (result < 0) {
+ die("Symbol: %s not found cannot set\n",
+ name);
+ }
+ if (sym.st_size != size) {
+ die("Symbol: %s has size: %lld not %zd\n",
+ name, sym.st_size, size);
+ }
+ shdr = &ehdr->e_shdr[sym.st_shndx];
+ if (shdr->sh_type == SHT_NOBITS) {
+ die("Symbol: %s is in a bss section cannot set\n", name);
+ }
+ sym_buf = (unsigned char *)(shdr->sh_data + sym.st_value);
+ memcpy(sym_buf, buf, size);
+}
+
+void elf_rel_get_symbol(struct mem_ehdr *ehdr,
+ const char *name, void *buf, size_t size)
+{
+ const unsigned char *sym_buf;
+ struct mem_shdr *shdr;
+ struct mem_sym sym;
+ int result;
+
+ result = elf_rel_find_symbol(ehdr, name, &sym);
+ if (result < 0) {
+ die("Symbol: %s not found cannot get\n", name);
+ }
+ if (sym.st_size != size) {
+ die("Symbol: %s has size: %lld not %zd\n",
+ name, sym.st_size, size);
+ }
+ shdr = &ehdr->e_shdr[sym.st_shndx];
+ if (shdr->sh_type == SHT_NOBITS) {
+ die("Symbol: %s is in a bss section cannot set\n", name);
+ }
+ sym_buf = shdr->sh_data + sym.st_value;
+ memcpy(buf, sym_buf,size);
+}
diff --git a/kexec/kexec-elf.c b/kexec/kexec-elf.c
new file mode 100644
index 0000000..be60bbd
--- /dev/null
+++ b/kexec/kexec-elf.c
@@ -0,0 +1,787 @@
+#include <limits.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include "elf.h"
+#include <boot/elf_boot.h>
+#include "kexec.h"
+#include "kexec-elf.h"
+#include "crashdump.h"
+
+static const int probe_debug = 0;
+
+uint16_t elf16_to_cpu(const struct mem_ehdr *ehdr, uint16_t value)
+{
+ if (ehdr->ei_data == ELFDATA2LSB) {
+ value = le16_to_cpu(value);
+ }
+ else if (ehdr->ei_data == ELFDATA2MSB) {
+ value = be16_to_cpu(value);
+ }
+ return value;
+}
+
+uint32_t elf32_to_cpu(const struct mem_ehdr *ehdr, uint32_t value)
+{
+ if (ehdr->ei_data == ELFDATA2LSB) {
+ value = le32_to_cpu(value);
+ }
+ else if (ehdr->ei_data == ELFDATA2MSB) {
+ value = be32_to_cpu(value);
+ }
+ return value;
+}
+
+uint64_t elf64_to_cpu(const struct mem_ehdr *ehdr, uint64_t value)
+{
+ if (ehdr->ei_data == ELFDATA2LSB) {
+ value = le64_to_cpu(value);
+ }
+ else if (ehdr->ei_data == ELFDATA2MSB) {
+ value = be64_to_cpu(value);
+ }
+ return value;
+}
+
+uint16_t cpu_to_elf16(const struct mem_ehdr *ehdr, uint16_t value)
+{
+ if (ehdr->ei_data == ELFDATA2LSB) {
+ value = cpu_to_le16(value);
+ }
+ else if (ehdr->ei_data == ELFDATA2MSB) {
+ value = cpu_to_be16(value);
+ }
+ return value;
+}
+
+uint32_t cpu_to_elf32(const struct mem_ehdr *ehdr, uint32_t value)
+{
+ if (ehdr->ei_data == ELFDATA2LSB) {
+ value = cpu_to_le32(value);
+ }
+ else if (ehdr->ei_data == ELFDATA2MSB) {
+ value = cpu_to_be32(value);
+ }
+ return value;
+}
+
+uint64_t cpu_to_elf64(const struct mem_ehdr *ehdr, uint64_t value)
+{
+ if (ehdr->ei_data == ELFDATA2LSB) {
+ value = cpu_to_le64(value);
+ }
+ else if (ehdr->ei_data == ELFDATA2MSB) {
+ value = cpu_to_be64(value);
+ }
+ return value;
+}
+
+#define ELF32_MAX 0xffffffff
+#define ELF64_MAX 0xffffffffffffffff
+#if ELF64_MAX > ULONG_MAX
+#undef ELF64_MAX
+#define ELF64_MAX ULONG_MAX
+#endif
+
+unsigned long elf_max_addr(const struct mem_ehdr *ehdr)
+{
+ unsigned long max_addr = 0;
+ if (ehdr->ei_class == ELFCLASS32) {
+ max_addr = ELF32_MAX;
+ }
+ else if (ehdr->ei_class == ELFCLASS64) {
+ max_addr = ELF64_MAX;
+ }
+ return max_addr;
+}
+static int build_mem_elf32_ehdr(const char *buf, off_t len, struct mem_ehdr *ehdr)
+{
+ Elf32_Ehdr lehdr;
+ if ((uintmax_t)len < (uintmax_t)sizeof(lehdr)) {
+ /* Buffer is to small to be an elf executable */
+ if (probe_debug) {
+ fprintf(stderr, "Buffer is to small to hold ELF header\n");
+ }
+ return -1;
+ }
+ memcpy(&lehdr, buf, sizeof(lehdr));
+ if (elf16_to_cpu(ehdr, lehdr.e_ehsize) != sizeof(Elf32_Ehdr)) {
+ /* Invalid Elf header size */
+ if (probe_debug) {
+ fprintf(stderr, "Bad ELF header size\n");
+ }
+ return -1;
+ }
+ if (elf32_to_cpu(ehdr, lehdr.e_entry) > UINT32_MAX) {
+ /* entry is to large */
+ if (probe_debug) {
+ fprintf(stderr, "ELF e_entry to large\n");
+ }
+ return -1;
+ }
+ if (elf32_to_cpu(ehdr, lehdr.e_phoff) > UINT32_MAX) {
+ /* phoff is to large */
+ if (probe_debug) {
+ fprintf(stderr, "ELF e_phoff to large\n");
+ }
+ return -1;
+ }
+ if (elf32_to_cpu(ehdr, lehdr.e_shoff) > UINT32_MAX) {
+ /* shoff is to large */
+ if (probe_debug) {
+ fprintf(stderr, "ELF e_shoff to large\n");
+ }
+ return -1;
+ }
+ ehdr->e_type = elf16_to_cpu(ehdr, lehdr.e_type);
+ ehdr->e_machine = elf16_to_cpu(ehdr, lehdr.e_machine);
+ ehdr->e_version = elf32_to_cpu(ehdr, lehdr.e_version);
+ ehdr->e_entry = elf32_to_cpu(ehdr, lehdr.e_entry);
+ ehdr->e_phoff = elf32_to_cpu(ehdr, lehdr.e_phoff);
+ ehdr->e_shoff = elf32_to_cpu(ehdr, lehdr.e_shoff);
+ ehdr->e_flags = elf32_to_cpu(ehdr, lehdr.e_flags);
+ ehdr->e_phnum = elf16_to_cpu(ehdr, lehdr.e_phnum);
+ ehdr->e_shnum = elf16_to_cpu(ehdr, lehdr.e_shnum);
+ ehdr->e_shstrndx = elf16_to_cpu(ehdr, lehdr.e_shstrndx);
+
+ if ((ehdr->e_phnum > 0) &&
+ (elf16_to_cpu(ehdr, lehdr.e_phentsize) != sizeof(Elf32_Phdr)))
+ {
+ /* Invalid program header size */
+ if (probe_debug) {
+ fprintf(stderr, "ELF bad program header size\n");
+ }
+ return -1;
+ }
+ if ((ehdr->e_shnum > 0) &&
+ (elf16_to_cpu(ehdr, lehdr.e_shentsize) != sizeof(Elf32_Shdr)))
+ {
+ /* Invalid section header size */
+ if (probe_debug) {
+ fprintf(stderr, "ELF bad section header size\n");
+ }
+ return -1;
+ }
+
+ return 0;
+}
+
+static int build_mem_elf64_ehdr(const char *buf, off_t len, struct mem_ehdr *ehdr)
+{
+ Elf64_Ehdr lehdr;
+ if ((uintmax_t)len < (uintmax_t)sizeof(lehdr)) {
+ /* Buffer is to small to be an elf executable */
+ if (probe_debug) {
+ fprintf(stderr, "Buffer is to small to hold ELF header\n");
+ }
+ return -1;
+ }
+ memcpy(&lehdr, buf, sizeof(lehdr));
+ if (elf16_to_cpu(ehdr, lehdr.e_ehsize) != sizeof(Elf64_Ehdr)) {
+ /* Invalid Elf header size */
+ if (probe_debug) {
+ fprintf(stderr, "Bad ELF header size\n");
+ }
+ return -1;
+ }
+ if (elf32_to_cpu(ehdr, lehdr.e_entry) > UINT32_MAX) {
+ /* entry is to large */
+ if (probe_debug) {
+ fprintf(stderr, "ELF e_entry to large\n");
+ }
+ return -1;
+ }
+ if (elf32_to_cpu(ehdr, lehdr.e_phoff) > UINT32_MAX) {
+ /* phoff is to large */
+ if (probe_debug) {
+ fprintf(stderr, "ELF e_phoff to large\n");
+ }
+ return -1;
+ }
+ if (elf32_to_cpu(ehdr, lehdr.e_shoff) > UINT32_MAX) {
+ /* shoff is to large */
+ if (probe_debug) {
+ fprintf(stderr, "ELF e_shoff to large\n");
+ }
+ return -1;
+ }
+ ehdr->e_type = elf16_to_cpu(ehdr, lehdr.e_type);
+ ehdr->e_machine = elf16_to_cpu(ehdr, lehdr.e_machine);
+ ehdr->e_version = elf32_to_cpu(ehdr, lehdr.e_version);
+ ehdr->e_entry = elf64_to_cpu(ehdr, lehdr.e_entry);
+ ehdr->e_phoff = elf64_to_cpu(ehdr, lehdr.e_phoff);
+ ehdr->e_shoff = elf64_to_cpu(ehdr, lehdr.e_shoff);
+ ehdr->e_flags = elf32_to_cpu(ehdr, lehdr.e_flags);
+ ehdr->e_phnum = elf16_to_cpu(ehdr, lehdr.e_phnum);
+ ehdr->e_shnum = elf16_to_cpu(ehdr, lehdr.e_shnum);
+ ehdr->e_shstrndx = elf16_to_cpu(ehdr, lehdr.e_shstrndx);
+
+ if ((ehdr->e_phnum > 0) &&
+ (elf16_to_cpu(ehdr, lehdr.e_phentsize) != sizeof(Elf64_Phdr)))
+ {
+ /* Invalid program header size */
+ if (probe_debug) {
+ fprintf(stderr, "ELF bad program header size\n");
+ }
+ return -1;
+ }
+ if ((ehdr->e_shnum > 0) &&
+ (elf16_to_cpu(ehdr, lehdr.e_shentsize) != sizeof(Elf64_Shdr)))
+ {
+ /* Invalid section header size */
+ if (probe_debug) {
+ fprintf(stderr, "ELF bad section header size\n");
+ }
+ return -1;
+ }
+
+ return 0;
+}
+
+static int build_mem_ehdr(const char *buf, off_t len, struct mem_ehdr *ehdr)
+{
+ unsigned char e_ident[EI_NIDENT];
+ int result;
+ memset(ehdr, 0, sizeof(*ehdr));
+ if ((uintmax_t)len < (uintmax_t)sizeof(e_ident)) {
+ /* Buffer is to small to be an elf executable */
+ if (probe_debug) {
+ fprintf(stderr, "Buffer is to small to hold ELF e_ident\n");
+ }
+ return -1;
+ }
+ memcpy(e_ident, buf, sizeof(e_ident));
+ if (memcmp(e_ident, ELFMAG, SELFMAG) != 0) {
+ /* No ELF header magic */
+ if (probe_debug) {
+ fprintf(stderr, "NO ELF header magic\n");
+ }
+ return -1;
+ }
+ ehdr->ei_class = e_ident[EI_CLASS];
+ ehdr->ei_data = e_ident[EI_DATA];
+ if ( (ehdr->ei_class != ELFCLASS32) &&
+ (ehdr->ei_class != ELFCLASS64))
+ {
+ /* Not a supported elf class */
+ if (probe_debug) {
+ fprintf(stderr, "Not a supported ELF class\n");
+ }
+ return -1;
+ }
+ if ( (ehdr->ei_data != ELFDATA2LSB) &&
+ (ehdr->ei_data != ELFDATA2MSB))
+ {
+ /* Not a supported elf data type */
+ if (probe_debug) {
+ fprintf(stderr, "Not a supported ELF data format\n");
+ }
+ return -1;
+ }
+
+ result = -1;
+ if (ehdr->ei_class == ELFCLASS32) {
+ result = build_mem_elf32_ehdr(buf, len, ehdr);
+ }
+ else if (ehdr->ei_class == ELFCLASS64) {
+ result = build_mem_elf64_ehdr(buf, len, ehdr);
+ }
+ if (result < 0) {
+ return result;
+ }
+ if ((e_ident[EI_VERSION] != EV_CURRENT) ||
+ (ehdr->e_version != EV_CURRENT))
+ {
+ if (probe_debug) {
+ fprintf(stderr, "Unknown ELF version\n");
+ }
+ /* Unknwon elf version */
+ return -1;
+ }
+ return 0;
+}
+
+static int build_mem_elf32_phdr(const char *buf, struct mem_ehdr *ehdr, int idx)
+{
+ struct mem_phdr *phdr;
+ const char *pbuf;
+ Elf32_Phdr lphdr;
+ pbuf = buf + ehdr->e_phoff + (idx * sizeof(lphdr));
+ phdr = &ehdr->e_phdr[idx];
+ memcpy(&lphdr, pbuf, sizeof(lphdr));
+
+ if ( (elf32_to_cpu(ehdr, lphdr.p_filesz) > UINT32_MAX) ||
+ (elf32_to_cpu(ehdr, lphdr.p_memsz) > UINT32_MAX) ||
+ (elf32_to_cpu(ehdr, lphdr.p_offset) > UINT32_MAX) ||
+ (elf32_to_cpu(ehdr, lphdr.p_paddr) > UINT32_MAX) ||
+ (elf32_to_cpu(ehdr, lphdr.p_vaddr) > UINT32_MAX) ||
+ (elf32_to_cpu(ehdr, lphdr.p_align) > UINT32_MAX))
+ {
+ fprintf(stderr, "Program segment size out of range\n");
+ return -1;
+ }
+
+ phdr->p_type = elf32_to_cpu(ehdr, lphdr.p_type);
+ phdr->p_paddr = elf32_to_cpu(ehdr, lphdr.p_paddr);
+ phdr->p_vaddr = elf32_to_cpu(ehdr, lphdr.p_vaddr);
+ phdr->p_filesz = elf32_to_cpu(ehdr, lphdr.p_filesz);
+ phdr->p_memsz = elf32_to_cpu(ehdr, lphdr.p_memsz);
+ phdr->p_offset = elf32_to_cpu(ehdr, lphdr.p_offset);
+ phdr->p_flags = elf32_to_cpu(ehdr, lphdr.p_flags);
+ phdr->p_align = elf32_to_cpu(ehdr, lphdr.p_align);
+
+ return 0;
+}
+
+static int build_mem_elf64_phdr(const char *buf, struct mem_ehdr *ehdr, int idx)
+{
+ struct mem_phdr *phdr;
+ const char *pbuf;
+ Elf64_Phdr lphdr;
+ pbuf = buf + ehdr->e_phoff + (idx * sizeof(lphdr));
+ phdr = &ehdr->e_phdr[idx];
+ memcpy(&lphdr, pbuf, sizeof(lphdr));
+
+ if ( (elf64_to_cpu(ehdr, lphdr.p_filesz) > UINT64_MAX) ||
+ (elf64_to_cpu(ehdr, lphdr.p_memsz) > UINT64_MAX) ||
+ (elf64_to_cpu(ehdr, lphdr.p_offset) > UINT64_MAX) ||
+ (elf64_to_cpu(ehdr, lphdr.p_paddr) > UINT64_MAX) ||
+ (elf64_to_cpu(ehdr, lphdr.p_vaddr) > UINT64_MAX) ||
+ (elf64_to_cpu(ehdr, lphdr.p_align) > UINT64_MAX))
+ {
+ fprintf(stderr, "Program segment size out of range\n");
+ return -1;
+ }
+
+ phdr->p_type = elf32_to_cpu(ehdr, lphdr.p_type);
+ phdr->p_paddr = elf64_to_cpu(ehdr, lphdr.p_paddr);
+ phdr->p_vaddr = elf64_to_cpu(ehdr, lphdr.p_vaddr);
+ phdr->p_filesz = elf64_to_cpu(ehdr, lphdr.p_filesz);
+ phdr->p_memsz = elf64_to_cpu(ehdr, lphdr.p_memsz);
+ phdr->p_offset = elf64_to_cpu(ehdr, lphdr.p_offset);
+ phdr->p_flags = elf32_to_cpu(ehdr, lphdr.p_flags);
+ phdr->p_align = elf64_to_cpu(ehdr, lphdr.p_align);
+
+ return 0;
+}
+
+static int build_mem_phdrs(const char *buf, off_t len, struct mem_ehdr *ehdr,
+ uint32_t flags)
+{
+ size_t phdr_size, mem_phdr_size, i;
+
+ /* e_phnum is at most 65535 so calculating
+ * the size of the program header cannot overflow.
+ */
+ /* Is the program header in the file buffer? */
+ phdr_size = 0;
+ if (ehdr->ei_class == ELFCLASS32) {
+ phdr_size = sizeof(Elf32_Phdr);
+ }
+ else if (ehdr->ei_class == ELFCLASS64) {
+ phdr_size = sizeof(Elf64_Phdr);
+ }
+ else {
+ fprintf(stderr, "Invalid ei_class?\n");
+ return -1;
+ }
+ phdr_size *= ehdr->e_phnum;
+ if ((uintmax_t)(ehdr->e_phoff + phdr_size) > (uintmax_t)len) {
+ /* The program header did not fit in the file buffer */
+ if (probe_debug || (flags & ELF_SKIP_FILESZ_CHECK)) {
+ fprintf(stderr, "ELF program headers truncated"
+ " have %ju bytes need %ju bytes\n",
+ (uintmax_t)len,
+ (uintmax_t)(ehdr->e_phoff + phdr_size));
+ }
+ return -1;
+ }
+
+ /* Allocate the e_phdr array */
+ mem_phdr_size = sizeof(ehdr->e_phdr[0]) * ehdr->e_phnum;
+ ehdr->e_phdr = xmalloc(mem_phdr_size);
+
+ for(i = 0; i < ehdr->e_phnum; i++) {
+ struct mem_phdr *phdr;
+ int result;
+ result = -1;
+ if (ehdr->ei_class == ELFCLASS32) {
+ result = build_mem_elf32_phdr(buf, ehdr, i);
+
+ }
+ else if (ehdr->ei_class == ELFCLASS64) {
+ result = build_mem_elf64_phdr(buf, ehdr, i);
+ }
+ if (result < 0) {
+ return result;
+ }
+
+ /* Check the program headers to be certain
+ * they are safe to use.
+ * Skip the check if ELF_SKIP_FILESZ_CHECK is set.
+ */
+ phdr = &ehdr->e_phdr[i];
+ if (!(flags & ELF_SKIP_FILESZ_CHECK)
+ && (uintmax_t)(phdr->p_offset + phdr->p_filesz) >
+ (uintmax_t)len) {
+ /* The segment does not fit in the buffer */
+ if (probe_debug) {
+ fprintf(stderr, "ELF segment not in file\n");
+ }
+ return -1;
+ }
+ if (phdr->p_paddr != (unsigned long long)-1 &&
+ (phdr->p_paddr + phdr->p_memsz) < phdr->p_paddr) {
+ /* The memory address wraps */
+ if (probe_debug) {
+ fprintf(stderr, "ELF address wrap around\n");
+ }
+ return -1;
+ }
+ /* Remember where the segment lives in the buffer */
+ phdr->p_data = buf + phdr->p_offset;
+ }
+ return 0;
+}
+
+static int build_mem_elf32_shdr(const char *buf, struct mem_ehdr *ehdr, int idx)
+{
+ struct mem_shdr *shdr;
+ const char *sbuf;
+ int size_ok;
+ Elf32_Shdr lshdr;
+ sbuf = buf + ehdr->e_shoff + (idx * sizeof(lshdr));
+ shdr = &ehdr->e_shdr[idx];
+ memcpy(&lshdr, sbuf, sizeof(lshdr));
+
+ if ( (elf32_to_cpu(ehdr, lshdr.sh_flags) > UINT32_MAX) ||
+ (elf32_to_cpu(ehdr, lshdr.sh_addr) > UINT32_MAX) ||
+ (elf32_to_cpu(ehdr, lshdr.sh_offset) > UINT32_MAX) ||
+ (elf32_to_cpu(ehdr, lshdr.sh_size) > UINT32_MAX) ||
+ (elf32_to_cpu(ehdr, lshdr.sh_addralign) > UINT32_MAX) ||
+ (elf32_to_cpu(ehdr, lshdr.sh_entsize) > UINT32_MAX))
+ {
+ fprintf(stderr, "Program section size out of range\n");
+ return -1;
+ }
+
+ shdr->sh_name = elf32_to_cpu(ehdr, lshdr.sh_name);
+ shdr->sh_type = elf32_to_cpu(ehdr, lshdr.sh_type);
+ shdr->sh_flags = elf32_to_cpu(ehdr, lshdr.sh_flags);
+ shdr->sh_addr = elf32_to_cpu(ehdr, lshdr.sh_addr);
+ shdr->sh_offset = elf32_to_cpu(ehdr, lshdr.sh_offset);
+ shdr->sh_size = elf32_to_cpu(ehdr, lshdr.sh_size);
+ shdr->sh_link = elf32_to_cpu(ehdr, lshdr.sh_link);
+ shdr->sh_info = elf32_to_cpu(ehdr, lshdr.sh_info);
+ shdr->sh_addralign = elf32_to_cpu(ehdr, lshdr.sh_addralign);
+ shdr->sh_entsize = elf32_to_cpu(ehdr, lshdr.sh_entsize);
+
+ /* Now verify sh_entsize */
+ size_ok = 0;
+ switch(shdr->sh_type) {
+ case SHT_SYMTAB:
+ size_ok = shdr->sh_entsize == sizeof(Elf32_Sym);
+ break;
+ case SHT_RELA:
+ size_ok = shdr->sh_entsize == sizeof(Elf32_Rela);
+ break;
+ case SHT_DYNAMIC:
+ size_ok = shdr->sh_entsize == sizeof(Elf32_Dyn);
+ break;
+ case SHT_REL:
+ size_ok = shdr->sh_entsize == sizeof(Elf32_Rel);
+ break;
+ case SHT_NOTE:
+ case SHT_NULL:
+ case SHT_PROGBITS:
+ case SHT_HASH:
+ case SHT_NOBITS:
+ default:
+ /* This is a section whose entsize requirements
+ * I don't care about. If I don't know about
+ * the section I can't care about it's entsize
+ * requirements.
+ */
+ size_ok = 1;
+ break;
+ }
+ if (!size_ok) {
+ fprintf(stderr, "Bad section header(%x) entsize: %lld\n",
+ shdr->sh_type, shdr->sh_entsize);
+ return -1;
+ }
+ return 0;
+}
+
+static int build_mem_elf64_shdr(const char *buf, struct mem_ehdr *ehdr, int idx)
+{
+ struct mem_shdr *shdr;
+ const char *sbuf;
+ int size_ok;
+ Elf64_Shdr lshdr;
+ sbuf = buf + ehdr->e_shoff + (idx * sizeof(lshdr));
+ shdr = &ehdr->e_shdr[idx];
+ memcpy(&lshdr, sbuf, sizeof(lshdr));
+
+ if ( (elf64_to_cpu(ehdr, lshdr.sh_flags) > UINT64_MAX) ||
+ (elf64_to_cpu(ehdr, lshdr.sh_addr) > UINT64_MAX) ||
+ (elf64_to_cpu(ehdr, lshdr.sh_offset) > UINT64_MAX) ||
+ (elf64_to_cpu(ehdr, lshdr.sh_size) > UINT64_MAX) ||
+ (elf64_to_cpu(ehdr, lshdr.sh_addralign) > UINT64_MAX) ||
+ (elf64_to_cpu(ehdr, lshdr.sh_entsize) > UINT64_MAX))
+ {
+ fprintf(stderr, "Program section size out of range\n");
+ return -1;
+ }
+
+ shdr->sh_name = elf32_to_cpu(ehdr, lshdr.sh_name);
+ shdr->sh_type = elf32_to_cpu(ehdr, lshdr.sh_type);
+ shdr->sh_flags = elf64_to_cpu(ehdr, lshdr.sh_flags);
+ shdr->sh_addr = elf64_to_cpu(ehdr, lshdr.sh_addr);
+ shdr->sh_offset = elf64_to_cpu(ehdr, lshdr.sh_offset);
+ shdr->sh_size = elf64_to_cpu(ehdr, lshdr.sh_size);
+ shdr->sh_link = elf32_to_cpu(ehdr, lshdr.sh_link);
+ shdr->sh_info = elf32_to_cpu(ehdr, lshdr.sh_info);
+ shdr->sh_addralign = elf64_to_cpu(ehdr, lshdr.sh_addralign);
+ shdr->sh_entsize = elf64_to_cpu(ehdr, lshdr.sh_entsize);
+
+ /* Now verify sh_entsize */
+ size_ok = 0;
+ switch(shdr->sh_type) {
+ case SHT_SYMTAB:
+ size_ok = shdr->sh_entsize == sizeof(Elf64_Sym);
+ break;
+ case SHT_RELA:
+ size_ok = shdr->sh_entsize == sizeof(Elf64_Rela);
+ break;
+ case SHT_DYNAMIC:
+ size_ok = shdr->sh_entsize == sizeof(Elf64_Dyn);
+ break;
+ case SHT_REL:
+ size_ok = shdr->sh_entsize == sizeof(Elf64_Rel);
+ break;
+ case SHT_NOTE:
+ case SHT_NULL:
+ case SHT_PROGBITS:
+ case SHT_HASH:
+ case SHT_NOBITS:
+ default:
+ /* This is a section whose entsize requirements
+ * I don't care about. If I don't know about
+ * the section I can't care about it's entsize
+ * requirements.
+ */
+ size_ok = 1;
+ break;
+ }
+ if (!size_ok) {
+ fprintf(stderr, "Bad section header(%x) entsize: %lld\n",
+ shdr->sh_type, shdr->sh_entsize);
+ return -1;
+ }
+ return 0;
+}
+
+static int build_mem_shdrs(const char *buf, off_t len, struct mem_ehdr *ehdr,
+ uint32_t flags)
+{
+ size_t shdr_size, mem_shdr_size, i;
+
+ /* e_shnum is at most 65536 so calculating
+ * the size of the section header cannot overflow.
+ */
+ /* Is the program header in the file buffer? */
+ shdr_size = 0;
+ if (ehdr->ei_class == ELFCLASS32) {
+ shdr_size = sizeof(Elf32_Shdr);
+ }
+ else if (ehdr->ei_class == ELFCLASS64) {
+ shdr_size = sizeof(Elf64_Shdr);
+ }
+ else {
+ fprintf(stderr, "Invalid ei_class?\n");
+ return -1;
+ }
+ shdr_size *= ehdr->e_shnum;
+ if ((uintmax_t)(ehdr->e_shoff + shdr_size) > (uintmax_t)len) {
+ /* The section header did not fit in the file buffer */
+ if (probe_debug) {
+ fprintf(stderr, "ELF section header does not fit in file\n");
+ }
+ return -1;
+ }
+
+ /* Allocate the e_shdr array */
+ mem_shdr_size = sizeof(ehdr->e_shdr[0]) * ehdr->e_shnum;
+ ehdr->e_shdr = xmalloc(mem_shdr_size);
+
+ for(i = 0; i < ehdr->e_shnum; i++) {
+ struct mem_shdr *shdr;
+ int result;
+ result = -1;
+ if (ehdr->ei_class == ELFCLASS32) {
+ result = build_mem_elf32_shdr(buf, ehdr, i);
+ }
+ else if (ehdr->ei_class == ELFCLASS64) {
+ result = build_mem_elf64_shdr(buf, ehdr, i);
+ }
+ if (result < 0) {
+ return result;
+ }
+ /* Check the section headers to be certain
+ * they are safe to use.
+ * Skip the check if ELF_SKIP_FILESZ_CHECK is set.
+ */
+ shdr = &ehdr->e_shdr[i];
+ if (!(flags & ELF_SKIP_FILESZ_CHECK)
+ && (shdr->sh_type != SHT_NOBITS)
+ && (uintmax_t)(shdr->sh_offset + shdr->sh_size) >
+ (uintmax_t)len) {
+ /* The section does not fit in the buffer */
+ if (probe_debug) {
+ fprintf(stderr, "ELF section %zd not in file\n",
+ i);
+ }
+ return -1;
+ }
+ if ((shdr->sh_addr + shdr->sh_size) < shdr->sh_addr) {
+ /* The memory address wraps */
+ if (probe_debug) {
+ fprintf(stderr, "ELF address wrap around\n");
+ }
+ return -1;
+ }
+ /* Remember where the section lives in the buffer */
+ shdr->sh_data = (unsigned char *)(buf + shdr->sh_offset);
+ }
+ return 0;
+}
+
+static void read_nhdr(const struct mem_ehdr *ehdr,
+ ElfNN_Nhdr *hdr, const unsigned char *note)
+{
+ memcpy(hdr, note, sizeof(*hdr));
+ hdr->n_namesz = elf32_to_cpu(ehdr, hdr->n_namesz);
+ hdr->n_descsz = elf32_to_cpu(ehdr, hdr->n_descsz);
+ hdr->n_type = elf32_to_cpu(ehdr, hdr->n_type);
+
+}
+static int build_mem_notes(struct mem_ehdr *ehdr)
+{
+ const unsigned char *note_start, *note_end, *note;
+ size_t note_size, i;
+ /* First find the note segment or section */
+ note_start = note_end = NULL;
+ for(i = 0; !note_start && (i < ehdr->e_phnum); i++) {
+ struct mem_phdr *phdr = &ehdr->e_phdr[i];
+ /*
+ * binutils <= 2.17 has a bug where it can create the
+ * PT_NOTE segment with an offset of 0. Therefore
+ * check p_offset > 0.
+ *
+ * See: http://sourceware.org/bugzilla/show_bug.cgi?id=594
+ */
+ if (phdr->p_type == PT_NOTE && phdr->p_offset) {
+ note_start = (unsigned char *)phdr->p_data;
+ note_end = note_start + phdr->p_filesz;
+ }
+ }
+ for(i = 0; !note_start && (i < ehdr->e_shnum); i++) {
+ struct mem_shdr *shdr = &ehdr->e_shdr[i];
+ if (shdr->sh_type == SHT_NOTE) {
+ note_start = shdr->sh_data;
+ note_end = note_start + shdr->sh_size;
+ }
+ }
+ if (!note_start) {
+ return 0;
+ }
+
+ /* Walk through and count the notes */
+ ehdr->e_notenum = 0;
+ for(note = note_start; note < note_end; note+= note_size) {
+ ElfNN_Nhdr hdr;
+ read_nhdr(ehdr, &hdr, note);
+ note_size = sizeof(hdr);
+ note_size += _ALIGN(hdr.n_namesz, 4);
+ note_size += _ALIGN(hdr.n_descsz, 4);
+ ehdr->e_notenum += 1;
+ }
+ /* Now walk and normalize the notes */
+ ehdr->e_note = xmalloc(sizeof(*ehdr->e_note) * ehdr->e_notenum);
+ for(i = 0, note = note_start; note < note_end; note+= note_size, i++) {
+ const unsigned char *name, *desc;
+ ElfNN_Nhdr hdr;
+ read_nhdr(ehdr, &hdr, note);
+ note_size = sizeof(hdr);
+ name = note + note_size;
+ note_size += _ALIGN(hdr.n_namesz, 4);
+ desc = note + note_size;
+ note_size += _ALIGN(hdr.n_descsz, 4);
+
+ if (((note+note_size) > note_end) ||
+ ((note+note_size) < note_start)) {
+ /* Something is very wrong here ! Most likely the note
+ * header is invalid */
+ fprintf(stderr, "ELF Note corrupted !\n");
+ return -1;
+ }
+
+ if ((hdr.n_namesz != 0) && (name[hdr.n_namesz -1] != '\0')) {
+ /* If note name string is not null terminated, just
+ * warn user about it and continue processing. This
+ * allows us to parse /proc/kcore on older kernels
+ * where /proc/kcore elf notes were not null
+ * terminated. It has been fixed in 2.6.19.
+ */
+ fprintf(stderr, "Warning: Elf Note name is not null "
+ "terminated\n");
+ }
+ ehdr->e_note[i].n_type = hdr.n_type;
+ ehdr->e_note[i].n_name = (char *)name;
+ ehdr->e_note[i].n_desc = desc;
+ ehdr->e_note[i].n_descsz = hdr.n_descsz;
+
+ }
+ return 0;
+}
+
+void free_elf_info(struct mem_ehdr *ehdr)
+{
+ free(ehdr->e_phdr);
+ free(ehdr->e_shdr);
+ memset(ehdr, 0, sizeof(*ehdr));
+}
+
+int build_elf_info(const char *buf, off_t len, struct mem_ehdr *ehdr,
+ uint32_t flags)
+{
+ int result;
+ result = build_mem_ehdr(buf, len, ehdr);
+ if (result < 0) {
+ return result;
+ }
+ if ((ehdr->e_phoff > 0) && (ehdr->e_phnum > 0)) {
+ result = build_mem_phdrs(buf, len, ehdr, flags);
+ if (result < 0) {
+ free_elf_info(ehdr);
+ return result;
+ }
+ }
+ if ((ehdr->e_shoff > 0) && (ehdr->e_shnum > 0)) {
+ result = build_mem_shdrs(buf, len, ehdr, flags);
+ if (result < 0) {
+ free_elf_info(ehdr);
+ return result;
+ }
+ }
+ result = build_mem_notes(ehdr);
+ if (result < 0) {
+ free_elf_info(ehdr);
+ return result;
+ }
+ return 0;
+}
+
diff --git a/kexec/kexec-elf.h b/kexec/kexec-elf.h
new file mode 100644
index 0000000..1e512c8
--- /dev/null
+++ b/kexec/kexec-elf.h
@@ -0,0 +1,143 @@
+#ifndef KEXEC_ELF_H
+#define KEXEC_ELF_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+struct kexec_info;
+
+struct mem_ehdr {
+ unsigned ei_class;
+ unsigned ei_data;
+ unsigned e_type;
+ unsigned e_machine;
+ unsigned e_version;
+ unsigned e_flags;
+ unsigned e_phnum;
+ unsigned e_shnum;
+ unsigned e_shstrndx;
+ unsigned long long e_entry;
+ unsigned long long e_phoff;
+ unsigned long long e_shoff;
+ unsigned e_notenum;
+ struct mem_phdr *e_phdr;
+ struct mem_shdr *e_shdr;
+ struct mem_note *e_note;
+ unsigned long rel_addr, rel_size;
+};
+
+struct mem_phdr {
+ unsigned long long p_paddr;
+ unsigned long long p_vaddr;
+ unsigned long long p_filesz;
+ unsigned long long p_memsz;
+ unsigned long long p_offset;
+ const char *p_data;
+ unsigned p_type;
+ unsigned p_flags;
+ unsigned long long p_align;
+};
+
+struct mem_shdr {
+ unsigned sh_name;
+ unsigned sh_type;
+ unsigned long long sh_flags;
+ unsigned long long sh_addr;
+ unsigned long long sh_offset;
+ unsigned long long sh_size;
+ unsigned sh_link;
+ unsigned sh_info;
+ unsigned long long sh_addralign;
+ unsigned long long sh_entsize;
+ const unsigned char *sh_data;
+};
+
+struct mem_sym {
+ unsigned long st_name; /* Symbol name (string tbl index) */
+ unsigned char st_info; /* No defined meaning, 0 */
+ unsigned char st_other; /* Symbol type and binding */
+ unsigned st_shndx; /* Section index */
+ unsigned long long st_value; /* Symbol value */
+ unsigned long long st_size; /* Symbol size */
+};
+
+struct mem_rela {
+ unsigned long long r_offset;
+ unsigned r_sym;
+ unsigned r_type;
+ unsigned long long r_addend;
+};
+
+struct mem_note {
+ unsigned n_type;
+ unsigned n_descsz;
+ const char *n_name;
+ const void *n_desc;
+};
+
+/* The definition of an ELF note does not vary depending
+ * on ELFCLASS.
+ */
+typedef struct
+{
+ uint32_t n_namesz; /* Length of the note's name. */
+ uint32_t n_descsz; /* Length of the note's descriptor. */
+ uint32_t n_type; /* Type of the note. */
+} ElfNN_Nhdr;
+
+/* Misc flags */
+
+#define ELF_SKIP_FILESZ_CHECK 0x00000001
+
+extern void free_elf_info(struct mem_ehdr *ehdr);
+extern int build_elf_info(const char *buf, off_t len, struct mem_ehdr *ehdr,
+ uint32_t flags);
+extern int build_elf_exec_info(const char *buf, off_t len,
+ struct mem_ehdr *ehdr, uint32_t flags);
+extern int build_elf_rel_info(const char *buf, off_t len, struct mem_ehdr *ehdr,
+ uint32_t flags);
+
+extern int build_elf_core_info(const char *buf, off_t len,
+ struct mem_ehdr *ehdr, uint32_t flags);
+extern int elf_exec_load(struct mem_ehdr *ehdr, struct kexec_info *info);
+extern int elf_exec_load_relocatable(struct mem_ehdr *ehdr, struct kexec_info *info,
+ unsigned long reloc_min, unsigned long reloc_max,
+ unsigned long align);
+extern int elf_rel_load(struct mem_ehdr *ehdr, struct kexec_info *info,
+ unsigned long min, unsigned long max, int end);
+
+extern void elf_exec_build_load(struct kexec_info *info, struct mem_ehdr *ehdr,
+ const char *buf, off_t len, uint32_t flags);
+extern void elf_exec_build_load_relocatable(struct kexec_info *info, struct mem_ehdr *ehdr,
+ const char *buf, off_t len, uint32_t flags,
+ unsigned long reloc_min, unsigned long reloc_max,
+ unsigned long align);
+extern void elf_rel_build_load(struct kexec_info *info, struct mem_ehdr *ehdr,
+ const char *buf, off_t len, unsigned long min, unsigned long max,
+ int end, uint32_t flags);
+
+extern int elf_rel_find_symbol(struct mem_ehdr *ehdr,
+ const char *name, struct mem_sym *ret_sym);
+extern unsigned long elf_rel_get_addr(struct mem_ehdr *ehdr, const char *name);
+extern void elf_rel_set_symbol(struct mem_ehdr *ehdr,
+ const char *name, const void *buf, size_t size);
+extern void elf_rel_get_symbol(struct mem_ehdr *ehdr,
+ const char *name, void *buf, size_t size);
+
+uint16_t elf16_to_cpu(const struct mem_ehdr *ehdr, uint16_t value);
+uint32_t elf32_to_cpu(const struct mem_ehdr *ehdr, uint32_t value);
+uint64_t elf64_to_cpu(const struct mem_ehdr *ehdr, uint64_t value);
+
+uint16_t cpu_to_elf16(const struct mem_ehdr *ehdr, uint16_t value);
+uint32_t cpu_to_elf32(const struct mem_ehdr *ehdr, uint32_t value);
+uint64_t cpu_to_elf64(const struct mem_ehdr *ehdr, uint64_t value);
+
+unsigned long elf_max_addr(const struct mem_ehdr *ehdr);
+
+/* Architecture specific helper functions */
+extern int machine_verify_elf_rel(struct mem_ehdr *ehdr);
+extern void machine_apply_elf_rel(struct mem_ehdr *ehdr, struct mem_sym *sym,
+ unsigned long r_type, void *location, unsigned long address,
+ unsigned long value);
+#endif /* KEXEC_ELF_H */
+
diff --git a/kexec/kexec-iomem.c b/kexec/kexec-iomem.c
new file mode 100644
index 0000000..d00b6b6
--- /dev/null
+++ b/kexec/kexec-iomem.c
@@ -0,0 +1,109 @@
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include "kexec.h"
+#include "crashdump.h"
+
+/*
+ * kexec_iomem_for_each_line()
+ *
+ * Iterate over each line in the file returned by proc_iomem(). If match is
+ * NULL or if the line matches with our match-pattern then call the
+ * callback if non-NULL.
+ * If match is NULL, callback should return a negative if error.
+ * Otherwise the interation goes on, incrementing nr but only if callback
+ * returns 0 (matched).
+ *
+ * Return the number of lines matched.
+ */
+
+int kexec_iomem_for_each_line(char *match,
+ int (*callback)(void *data,
+ int nr,
+ char *str,
+ unsigned long long base,
+ unsigned long long length),
+ void *data)
+{
+ const char *iomem = proc_iomem();
+ char line[MAX_LINE];
+ FILE *fp;
+ unsigned long long start, end, size;
+ char *str;
+ int consumed;
+ int count;
+ int nr = 0, ret;
+
+ if (!callback)
+ return nr;
+
+ fp = fopen(iomem, "r");
+ if (!fp)
+ die("Cannot open %s\n", iomem);
+
+ while(fgets(line, sizeof(line), fp) != 0) {
+ count = sscanf(line, "%llx-%llx : %n", &start, &end, &consumed);
+ if (count != 2)
+ continue;
+ str = line + consumed;
+ size = end - start + 1;
+ if (!match || memcmp(str, match, strlen(match)) == 0) {
+ ret = callback(data, nr, str, start, size);
+ if (ret < 0)
+ break;
+ else if (ret == 0)
+ nr++;
+ }
+ }
+
+ fclose(fp);
+
+ return nr;
+}
+
+static int kexec_iomem_single_callback(void *data, int nr,
+ char *UNUSED(str),
+ unsigned long long base,
+ unsigned long long length)
+{
+ struct memory_range *range = data;
+
+ if (nr == 0) {
+ range->start = base;
+ range->end = base + length - 1;
+ }
+
+ return 0;
+}
+
+int parse_iomem_single(char *str, uint64_t *start, uint64_t *end)
+{
+ struct memory_range range;
+ int ret;
+
+ memset(&range, 0, sizeof(range));
+
+ ret = kexec_iomem_for_each_line(str,
+ kexec_iomem_single_callback, &range);
+
+ if (ret == 1) {
+ if (start)
+ *start = range.start;
+ if (end)
+ *end = range.end;
+
+ ret = 0;
+ }
+ else
+ ret = -1;
+
+ return ret;
+}
diff --git a/kexec/kexec-lzma.h b/kexec/kexec-lzma.h
new file mode 100644
index 0000000..d3b751a
--- /dev/null
+++ b/kexec/kexec-lzma.h
@@ -0,0 +1,8 @@
+#ifndef __KEXEC_LZMA_H
+#define __KEXEC_LZMA_H
+
+#include <sys/types.h>
+
+char *lzma_decompress_file(const char *filename, off_t *r_size);
+
+#endif /* __KEXEC_LZMA_H */
diff --git a/kexec/kexec-pe-zboot.c b/kexec/kexec-pe-zboot.c
new file mode 100644
index 0000000..2f2e052
--- /dev/null
+++ b/kexec/kexec-pe-zboot.c
@@ -0,0 +1,131 @@
+/*
+ * Generic PE compressed Image (vmlinuz, ZBOOT) support.
+ *
+ * Several distros use 'make zinstall' with CONFIG_ZBOOT
+ * enabled to create UEFI PE images that contain
+ * a decompressor and a compressed kernel image.
+ *
+ * Currently we cannot use kexec_file_load() to load vmlinuz
+ * PE images that self decompress.
+ *
+ * To support ZBOOT, we should:
+ * a). Copy the compressed contents of vmlinuz to a temporary file.
+ * b). Decompress (gunzip-decompress) the contents inside the
+ * temporary file.
+ * c). Validate the resulting image and write it back to the
+ * temporary file.
+ * d). Pass the 'fd' of the temporary file to the kernel space.
+ *
+ * This module contains the arch independent code for the above,
+ * arch specific PE and image checks should wrap calls
+ * to functions in this module.
+ */
+
+#define _GNU_SOURCE
+#include <stdlib.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include "kexec.h"
+#include <kexec-pe-zboot.h>
+
+#define FILENAME_IMAGE "/tmp/ImageXXXXXX"
+
+/*
+ * Returns -1 : in case of error/invalid format (not a valid PE+compressed ZBOOT format.
+ *
+ * crude_buf: the content, which is read from the kernel file without any processing
+ */
+int pez_prepare(const char *crude_buf, off_t buf_sz, int *kernel_fd)
+{
+ int ret = -1;
+ int fd = 0;
+ char *fname = NULL;
+ char *kernel_uncompressed_buf = NULL;
+ off_t decompressed_size = 0;
+ const struct linux_pe_zboot_header *z;
+
+ z = (const struct linux_pe_zboot_header *)(crude_buf);
+
+ if (memcmp(&z->image_type, "zimg", sizeof(z->image_type))) {
+ dbgprintf("%s: PE doesn't contain a compressed kernel.\n", __func__);
+ return -1;
+ }
+
+ /*
+ * At the moment its possible to create images with more compression
+ * algorithms than are supported here, error out if we detect that.
+ */
+ if (memcmp(&z->compress_type, "gzip", 4) &&
+ memcmp(&z->compress_type, "lzma", 4)) {
+ dbgprintf("%s: kexec can only decompress gziped and lzma images.\n", __func__);
+ return -1;
+ }
+
+ if (buf_sz < z->payload_offset + z->payload_size) {
+ dbgprintf("%s: PE too small to contain complete payload.\n", __func__);
+ return -1;
+ }
+
+ if (!(fname = strdup(FILENAME_IMAGE))) {
+ dbgprintf("%s: Can't duplicate strings\n", __func__);
+ return -1;
+ }
+
+ if ((fd = mkstemp(fname)) < 0) {
+ dbgprintf("%s: Can't open file %s\n", __func__, fname);
+ ret = -1;
+ goto fail_mkstemp;
+ }
+
+ if (write(fd, &crude_buf[z->payload_offset],
+ z->payload_size) != z->payload_size) {
+ dbgprintf("%s: Can't write the compressed file %s\n",
+ __func__, fname);
+ ret = -1;
+ goto fail_write;
+ }
+
+ kernel_uncompressed_buf = slurp_decompress_file(fname,
+ &decompressed_size);
+
+ dbgprintf("%s: decompressed size %ld\n", __func__, decompressed_size);
+
+ lseek(fd, 0, SEEK_SET);
+
+ if (write(fd, kernel_uncompressed_buf,
+ decompressed_size) != decompressed_size) {
+ dbgprintf("%s: Can't write the decompressed file %s\n",
+ __func__, fname);
+ ret = -1;
+ goto fail_bad_header;
+ }
+
+ *kernel_fd = open(fname, O_RDONLY);
+ if (*kernel_fd == -1) {
+ dbgprintf("%s: Failed to open file %s\n",
+ __func__, fname);
+ ret = -1;
+ goto fail_bad_header;
+ }
+
+ dbgprintf("%s: done\n", __func__);
+
+ ret = 0;
+ goto fail_write;
+
+fail_bad_header:
+ free(kernel_uncompressed_buf);
+
+fail_write:
+ if (fd >= 0)
+ close(fd);
+
+ unlink(fname);
+
+fail_mkstemp:
+ free(fname);
+
+ return ret;
+}
diff --git a/kexec/kexec-sha256.h b/kexec/kexec-sha256.h
new file mode 100644
index 0000000..b4bb856
--- /dev/null
+++ b/kexec/kexec-sha256.h
@@ -0,0 +1,11 @@
+#ifndef KEXEC_SHA256_H
+#define KEXEC_SHA256_H
+
+struct sha256_region {
+ uint64_t start;
+ uint64_t len;
+};
+
+#define SHA256_REGIONS 16
+
+#endif /* KEXEC_SHA256_H */
diff --git a/kexec/kexec-syscall.h b/kexec/kexec-syscall.h
new file mode 100644
index 0000000..1e2d12f
--- /dev/null
+++ b/kexec/kexec-syscall.h
@@ -0,0 +1,188 @@
+#ifndef KEXEC_SYSCALL_H
+#define KEXEC_SYSCALL_H
+
+#define __LIBRARY__
+#include <sys/syscall.h>
+#include <unistd.h>
+
+#define LINUX_REBOOT_CMD_KEXEC_OLD 0x81726354
+#define LINUX_REBOOT_CMD_KEXEC_OLD2 0x18263645
+#define LINUX_REBOOT_CMD_KEXEC 0x45584543
+
+#ifndef __NR_kexec_load
+#ifdef __i386__
+#define __NR_kexec_load 283
+#endif
+#ifdef __sh__
+#define __NR_kexec_load 283
+#endif
+#ifdef __cris__
+#ifndef __NR_kexec_load
+#define __NR_kexec_load 283
+#endif
+#endif
+#ifdef __ia64__
+#define __NR_kexec_load 1268
+#endif
+#ifdef __powerpc64__
+#define __NR_kexec_load 268
+#endif
+#ifdef __powerpc__
+#define __NR_kexec_load 268
+#endif
+#ifdef __x86_64__
+#define __NR_kexec_load 246
+#endif
+#ifdef __s390x__
+#define __NR_kexec_load 277
+#endif
+#ifdef __s390__
+#define __NR_kexec_load 277
+#endif
+#ifdef __loongarch__
+#define __NR_kexec_load 104
+#endif
+#if defined(__arm__) || defined(__arm64__)
+#define __NR_kexec_load __NR_SYSCALL_BASE + 347
+#endif
+#if defined(__mips__)
+#define __NR_kexec_load 4311
+#endif
+#ifdef __m68k__
+#define __NR_kexec_load 313
+#endif
+#ifdef __alpha__
+#define __NR_kexec_load 448
+#endif
+#ifndef __NR_kexec_load
+#error Unknown processor architecture. Needs a kexec_load syscall number.
+#endif
+#endif /*ifndef __NR_kexec_load*/
+
+#if defined(__arm__) || defined(__loongarch__)
+#undef __NR_kexec_file_load
+#endif
+
+#ifndef __NR_kexec_file_load
+
+#ifdef __x86_64__
+#define __NR_kexec_file_load 320
+#endif
+#ifdef __powerpc64__
+#define __NR_kexec_file_load 382
+#endif
+#ifdef __s390x__
+#define __NR_kexec_file_load 381
+#endif
+#ifdef __aarch64__
+#define __NR_kexec_file_load 294
+#endif
+#ifdef __hppa__
+#define __NR_kexec_file_load 355
+#endif
+
+#ifndef __NR_kexec_file_load
+/* system call not available for the arch */
+#define __NR_kexec_file_load 0xffffffff /* system call not available */
+#endif
+
+#endif /*ifndef __NR_kexec_file_load*/
+
+struct kexec_segment;
+
+static inline long kexec_load(void *entry, unsigned long nr_segments,
+ struct kexec_segment *segments, unsigned long flags)
+{
+ return (long) syscall(__NR_kexec_load, entry, nr_segments, segments, flags);
+}
+
+static inline int is_kexec_file_load_implemented(void) {
+ if (__NR_kexec_file_load != 0xffffffff)
+ return 1;
+ return 0;
+}
+
+static inline long kexec_file_load(int kernel_fd, int initrd_fd,
+ unsigned long cmdline_len, const char *cmdline_ptr,
+ unsigned long flags)
+{
+ return (long) syscall(__NR_kexec_file_load, kernel_fd, initrd_fd,
+ cmdline_len, cmdline_ptr, flags);
+}
+
+#define KEXEC_ON_CRASH 0x00000001
+#define KEXEC_PRESERVE_CONTEXT 0x00000002
+#define KEXEC_ARCH_MASK 0xffff0000
+
+/* Flags for kexec file based system call */
+#define KEXEC_FILE_UNLOAD 0x00000001
+#define KEXEC_FILE_ON_CRASH 0x00000002
+#define KEXEC_FILE_NO_INITRAMFS 0x00000004
+
+/* These values match the ELF architecture values.
+ * Unless there is a good reason that should continue to be the case.
+ */
+#define KEXEC_ARCH_DEFAULT ( 0 << 16)
+#define KEXEC_ARCH_386 ( 3 << 16)
+#define KEXEC_ARCH_68K ( 4 << 16)
+#define KEXEC_ARCH_HPPA (15 << 16)
+#define KEXEC_ARCH_X86_64 (62 << 16)
+#define KEXEC_ARCH_PPC (20 << 16)
+#define KEXEC_ARCH_PPC64 (21 << 16)
+#define KEXEC_ARCH_IA_64 (50 << 16)
+#define KEXEC_ARCH_ARM (40 << 16)
+#define KEXEC_ARCH_ARM64 (183 << 16)
+#define KEXEC_ARCH_S390 (22 << 16)
+#define KEXEC_ARCH_SH (42 << 16)
+#define KEXEC_ARCH_MIPS_LE (10 << 16)
+#define KEXEC_ARCH_MIPS ( 8 << 16)
+#define KEXEC_ARCH_CRIS (76 << 16)
+#define KEXEC_ARCH_LOONGARCH (258 << 16)
+
+#define KEXEC_MAX_SEGMENTS 16
+
+#ifdef __i386__
+#define KEXEC_ARCH_NATIVE KEXEC_ARCH_386
+#endif
+#ifdef __sh__
+#define KEXEC_ARCH_NATIVE KEXEC_ARCH_SH
+#endif
+#ifdef __cris__
+#define KEXEC_ARCH_NATIVE KEXEC_ARCH_CRIS
+#endif
+#ifdef __ia64__
+#define KEXEC_ARCH_NATIVE KEXEC_ARCH_IA_64
+#endif
+#ifdef __powerpc64__
+#define KEXEC_ARCH_NATIVE KEXEC_ARCH_PPC64
+#else
+ #ifdef __powerpc__
+ #define KEXEC_ARCH_NATIVE KEXEC_ARCH_PPC
+ #endif
+#endif
+#ifdef __x86_64__
+#define KEXEC_ARCH_NATIVE KEXEC_ARCH_X86_64
+#endif
+#ifdef __s390x__
+#define KEXEC_ARCH_NATIVE KEXEC_ARCH_S390
+#endif
+#ifdef __s390__
+#define KEXEC_ARCH_NATIVE KEXEC_ARCH_S390
+#endif
+#ifdef __arm__
+#define KEXEC_ARCH_NATIVE KEXEC_ARCH_ARM
+#endif
+#if defined(__mips__)
+#define KEXEC_ARCH_NATIVE KEXEC_ARCH_MIPS
+#endif
+#ifdef __m68k__
+#define KEXEC_ARCH_NATIVE KEXEC_ARCH_68K
+#endif
+#if defined(__arm64__)
+#define KEXEC_ARCH_NATIVE KEXEC_ARCH_ARM64
+#endif
+#if defined(__loongarch__)
+#define KEXEC_ARCH_NATIVE KEXEC_ARCH_LOONGARCH
+#endif
+
+#endif /* KEXEC_SYSCALL_H */
diff --git a/kexec/kexec-uImage.c b/kexec/kexec-uImage.c
new file mode 100644
index 0000000..016be10
--- /dev/null
+++ b/kexec/kexec-uImage.c
@@ -0,0 +1,283 @@
+#define _GNU_SOURCE
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <sys/types.h>
+#include <image.h>
+#include <getopt.h>
+#include <arch/options.h>
+#include "kexec.h"
+#include <kexec-uImage.h>
+
+#ifdef HAVE_LIBZ
+#include <zlib.h>
+#endif
+/*
+ * Basic uImage loader. Not rocket science.
+ */
+
+/*
+ * Returns the image type if everything goes well. This would
+ * allow the user to decide if the image is of their interest.
+ *
+ * Returns -1 on a corrupted image
+ *
+ * Returns 0 if this is not a uImage
+ */
+int uImage_probe(const char *buf, off_t len, unsigned int arch)
+{
+ struct image_header header;
+#ifdef HAVE_LIBZ
+ unsigned int crc;
+ unsigned int hcrc;
+#endif
+
+ if ((uintmax_t)len < (uintmax_t)sizeof(header))
+ return -1;
+
+ memcpy(&header, buf, sizeof(header));
+ if (be32_to_cpu(header.ih_magic) != IH_MAGIC)
+ return 0;
+#ifdef HAVE_LIBZ
+ hcrc = be32_to_cpu(header.ih_hcrc);
+ header.ih_hcrc = 0;
+ crc = crc32(0, (void *)&header, sizeof(header));
+ if (crc != hcrc) {
+ printf("Header checksum of the uImage does not match\n");
+ return -1;
+ }
+#endif
+ switch (header.ih_type) {
+ case IH_TYPE_KERNEL:
+ case IH_TYPE_KERNEL_NOLOAD:
+ break;
+ case IH_TYPE_RAMDISK:
+ break;
+ default:
+ printf("uImage type %d unsupported\n", header.ih_type);
+ return -1;
+ }
+
+ if (header.ih_os != IH_OS_LINUX) {
+ printf("uImage os %d unsupported\n", header.ih_os);
+ return -1;
+ }
+
+ if (header.ih_arch != arch) {
+ printf("uImage arch %d unsupported\n", header.ih_arch);
+ return -1;
+ }
+
+ switch (header.ih_comp) {
+ case IH_COMP_NONE:
+#ifdef HAVE_LIBZ
+ case IH_COMP_GZIP:
+#endif
+ break;
+ default:
+ printf("uImage uses unsupported compression method\n");
+ return -1;
+ }
+
+ if (be32_to_cpu(header.ih_size) > len - sizeof(header)) {
+ printf("uImage header claims that image has %d bytes\n",
+ be32_to_cpu(header.ih_size));
+ printf("we read only %lld bytes.\n",
+ (long long)len - sizeof(header));
+ return -1;
+ }
+#ifdef HAVE_LIBZ
+ crc = crc32(0, (void *)buf + sizeof(header), be32_to_cpu(header.ih_size));
+ if (crc != be32_to_cpu(header.ih_dcrc)) {
+ printf("uImage: The data CRC does not match. Computed: %08x "
+ "expected %08x\n", crc,
+ be32_to_cpu(header.ih_dcrc));
+ return -1;
+ }
+#endif
+ return (int)header.ih_type;
+}
+
+/*
+ * To conform to the 'probe' routine in file_type struct,
+ * we return :
+ * 0 - If the image is valid 'type' image.
+ *
+ * Now, we have to pass on the 'errors' in the image. So,
+ *
+ * -1 - If the image is corrupted.
+ * 1 - If the image is not a uImage.
+ */
+
+int uImage_probe_kernel(const char *buf, off_t len, unsigned int arch)
+{
+ int type = uImage_probe(buf, len, arch);
+ if (type < 0)
+ return -1;
+
+ return !(type == IH_TYPE_KERNEL || type == IH_TYPE_KERNEL_NOLOAD);
+}
+
+int uImage_probe_ramdisk(const char *buf, off_t len, unsigned int arch)
+{
+ int type = uImage_probe(buf, len, arch);
+
+ if (type < 0)
+ return -1;
+ return !(type == IH_TYPE_RAMDISK);
+}
+
+#ifdef HAVE_LIBZ
+/* gzip flag byte */
+#define ASCII_FLAG 0x01 /* bit 0 set: file probably ascii text */
+#define HEAD_CRC 0x02 /* bit 1 set: header CRC present */
+#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */
+#define ORIG_NAME 0x08 /* bit 3 set: original file name present */
+#define COMMENT 0x10 /* bit 4 set: file comment present */
+#define RESERVED 0xE0 /* bits 5..7: reserved */
+
+static int uImage_gz_load(const char *buf, off_t len,
+ struct Image_info *image)
+{
+ int ret;
+ z_stream strm;
+ unsigned int skip;
+ unsigned int flags;
+ unsigned char *uncomp_buf;
+ unsigned int mem_alloc;
+
+ mem_alloc = 10 * 1024 * 1024;
+ uncomp_buf = malloc(mem_alloc);
+ if (!uncomp_buf)
+ return -1;
+
+ memset(&strm, 0, sizeof(strm));
+
+ /* Skip magic, method, time, flags, os code ... */
+ skip = 10;
+
+ /* check GZ magic */
+ if (buf[0] != 0x1f || buf[1] != 0x8b) {
+ free(uncomp_buf);
+ return -1;
+ }
+
+ flags = buf[3];
+ if (buf[2] != Z_DEFLATED || (flags & RESERVED) != 0) {
+ puts ("Error: Bad gzipped data\n");
+ free(uncomp_buf);
+ return -1;
+ }
+
+ if (flags & EXTRA_FIELD) {
+ skip += 2;
+ skip += buf[10];
+ skip += buf[11] << 8;
+ }
+ if (flags & ORIG_NAME) {
+ while (buf[skip++])
+ ;
+ }
+ if (flags & COMMENT) {
+ while (buf[skip++])
+ ;
+ }
+ if (flags & HEAD_CRC)
+ skip += 2;
+
+ strm.avail_in = len - skip;
+ strm.next_in = (void *)buf + skip;
+
+ /* - activates parsing gz headers */
+ ret = inflateInit2(&strm, -MAX_WBITS);
+ if (ret != Z_OK) {
+ free(uncomp_buf);
+ return -1;
+ }
+
+ strm.next_out = uncomp_buf;
+ strm.avail_out = mem_alloc;
+
+ do {
+ ret = inflate(&strm, Z_FINISH);
+ if (ret == Z_STREAM_END)
+ break;
+
+ if (ret == Z_OK || ret == Z_BUF_ERROR) {
+ void *new_buf;
+ int inc_buf = 5 * 1024 * 1024;
+
+ mem_alloc += inc_buf;
+ new_buf = realloc(uncomp_buf, mem_alloc);
+ if (!new_buf) {
+ inflateEnd(&strm);
+ free(uncomp_buf);
+ return -1;
+ }
+
+ uncomp_buf = new_buf;
+ strm.next_out = uncomp_buf + mem_alloc - inc_buf;
+ strm.avail_out = inc_buf;
+ } else {
+ free(uncomp_buf);
+ printf("Error during decompression %d\n", ret);
+ return -1;
+ }
+ } while (1);
+
+ inflateEnd(&strm);
+ image->buf = (char *)uncomp_buf;
+ image->len = mem_alloc - strm.avail_out;
+ return 0;
+}
+#else
+static int uImage_gz_load(const char *UNUSED(buf), off_t UNUSED(len),
+ struct Image_info *UNUSED(image))
+{
+ return -1;
+}
+#endif
+
+int uImage_load(const char *buf, off_t len, struct Image_info *image)
+{
+ const struct image_header *header = (const struct image_header *)buf;
+ const char *img_buf = buf + sizeof(struct image_header);
+ off_t img_len = be32_to_cpu(header->ih_size);
+
+ /*
+ * Prevent loading a modified image.
+ * CRC check is perfomed only when zlib is compiled
+ * in. This check will help us to detect
+ * size related vulnerabilities.
+ */
+ if (img_len != (len - sizeof(struct image_header))) {
+ printf("Image size doesn't match the header\n");
+ return -1;
+ }
+
+ image->base = cpu_to_be32(header->ih_load);
+ image->ep = cpu_to_be32(header->ih_ep);
+ switch (header->ih_comp) {
+ case IH_COMP_NONE:
+ image->buf = img_buf;
+ image->len = img_len;
+ return 0;
+ break;
+
+ case IH_COMP_GZIP:
+ /*
+ * uboot doesn't decompress the RAMDISK images.
+ * Comply to the uboot behaviour.
+ */
+ if (header->ih_type == IH_TYPE_RAMDISK) {
+ image->buf = img_buf;
+ image->len = img_len;
+ return 0;
+ } else
+ return uImage_gz_load(img_buf, img_len, image);
+ break;
+
+ default:
+ return -1;
+ }
+}
diff --git a/kexec/kexec-xen.c b/kexec/kexec-xen.c
new file mode 100644
index 0000000..a7c8933
--- /dev/null
+++ b/kexec/kexec-xen.c
@@ -0,0 +1,297 @@
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <elf.h>
+#include "kexec.h"
+#include "kexec-syscall.h"
+#include "crashdump.h"
+
+#include "config.h"
+
+#ifdef HAVE_LIBXENCTRL
+#include "kexec-xen.h"
+
+#include "crashdump.h"
+
+#ifdef CONFIG_LIBXENCTRL_DL
+#include <dlfcn.h>
+
+/* The handle from dlopen(), needed by dlsym(), dlclose() */
+static void *xc_dlhandle;
+xc_hypercall_buffer_t XC__HYPERCALL_BUFFER_NAME(HYPERCALL_BUFFER_NULL);
+
+void *__xc_dlsym(const char *symbol)
+{
+ return dlsym(xc_dlhandle, symbol);
+}
+
+xc_interface *__xc_interface_open(xentoollog_logger *logger,
+ xentoollog_logger *dombuild_logger,
+ unsigned open_flags)
+{
+ xc_interface *xch = NULL;
+
+ if (!xc_dlhandle)
+ xc_dlhandle = dlopen("libxenctrl.so", RTLD_NOW | RTLD_NODELETE);
+
+ if (xc_dlhandle) {
+ typedef xc_interface *(*func_t)(xentoollog_logger *logger,
+ xentoollog_logger *dombuild_logger,
+ unsigned open_flags);
+
+ func_t func = (func_t)dlsym(xc_dlhandle, "xc_interface_open");
+ xch = func(logger, dombuild_logger, open_flags);
+ }
+
+ return xch;
+}
+
+int __xc_interface_close(xc_interface *xch)
+{
+ int rc = -1;
+
+ if (xc_dlhandle) {
+ typedef int (*func_t)(xc_interface *xch);
+
+ func_t func = (func_t)dlsym(xc_dlhandle, "xc_interface_close");
+ rc = func(xch);
+ dlclose(xc_dlhandle);
+ xc_dlhandle = NULL;
+ }
+
+ return rc;
+}
+#endif /* CONFIG_LIBXENCTRL_DL */
+
+int xen_get_kexec_range(int range, uint64_t *start, uint64_t *end)
+{
+ uint64_t size;
+ xc_interface *xc;
+ int rc = -1;
+
+ xc = xc_interface_open(NULL, NULL, 0);
+ if (!xc) {
+ fprintf(stderr, "failed to open xen control interface.\n");
+ goto out;
+ }
+
+ rc = xc_kexec_get_range(xc, range, 0, &size, start);
+ if (rc < 0) {
+ fprintf(stderr, "failed to get range=%d from hypervisor.\n", range);
+ goto out_close;
+ }
+
+ *end = *start + size - 1;
+
+out_close:
+ xc_interface_close(xc);
+
+out:
+ return rc;
+}
+
+static uint8_t xen_get_kexec_type(unsigned long kexec_flags)
+{
+ if (kexec_flags & KEXEC_ON_CRASH)
+ return KEXEC_TYPE_CRASH;
+
+ if (kexec_flags & KEXEC_LIVE_UPDATE)
+ return KEXEC_TYPE_LIVE_UPDATE;
+
+ return KEXEC_TYPE_DEFAULT;
+}
+
+#define IDENTMAP_1MiB (1024 * 1024)
+
+int xen_kexec_load(struct kexec_info *info)
+{
+ uint32_t nr_segments = info->nr_segments, nr_low_segments = 0;
+ struct kexec_segment *segments = info->segment;
+ uint64_t low_watermark = 0;
+ xc_interface *xch;
+ xc_hypercall_buffer_array_t *array = NULL;
+ uint8_t type;
+ uint8_t arch;
+ xen_kexec_segment_t *xen_segs, *seg;
+ int s;
+ int ret = -1;
+
+ xch = xc_interface_open(NULL, NULL, 0);
+ if (!xch)
+ return -1;
+
+ /*
+ * Ensure 0 - 1 MiB is mapped and accessible by the image.
+ * This allows access to the VGA memory and the region
+ * purgatory copies in the crash case.
+ *
+ * First, count the number of additional segments which will
+ * need to be added in between the ones in segments[].
+ *
+ * The segments are already sorted.
+ */
+ for (s = 0; s < nr_segments && (uint64_t)segments[s].mem <= IDENTMAP_1MiB; s++) {
+ if ((uint64_t)segments[s].mem > low_watermark)
+ nr_low_segments++;
+
+ low_watermark = (uint64_t)segments[s].mem + segments[s].memsz;
+ }
+ if (low_watermark < IDENTMAP_1MiB)
+ nr_low_segments++;
+
+ low_watermark = 0;
+
+ xen_segs = calloc(nr_segments + nr_low_segments, sizeof(*xen_segs));
+ if (!xen_segs)
+ goto out;
+
+ array = xc_hypercall_buffer_array_create(xch, nr_segments);
+ if (array == NULL)
+ goto out;
+
+ seg = xen_segs;
+ for (s = 0; s < nr_segments; s++) {
+ DECLARE_HYPERCALL_BUFFER(void, seg_buf);
+
+ if (low_watermark < IDENTMAP_1MiB && (uint64_t)segments[s].mem > low_watermark) {
+ set_xen_guest_handle(seg->buf.h, HYPERCALL_BUFFER_NULL);
+ seg->buf_size = 0;
+ seg->dest_maddr = low_watermark;
+ low_watermark = (uint64_t)segments[s].mem;
+ if (low_watermark > IDENTMAP_1MiB)
+ low_watermark = IDENTMAP_1MiB;
+ seg->dest_size = low_watermark - seg->dest_maddr;
+ seg++;
+ }
+
+ seg_buf = xc_hypercall_buffer_array_alloc(xch, array, s,
+ seg_buf, segments[s].bufsz);
+ if (seg_buf == NULL)
+ goto out;
+ memcpy(seg_buf, segments[s].buf, segments[s].bufsz);
+
+ set_xen_guest_handle(seg->buf.h, seg_buf);
+ seg->buf_size = segments[s].bufsz;
+ seg->dest_maddr = (uint64_t)segments[s].mem;
+ seg->dest_size = segments[s].memsz;
+ seg++;
+
+ low_watermark = (uint64_t)segments[s].mem + segments[s].memsz;
+ }
+
+ if ((uint64_t)low_watermark < IDENTMAP_1MiB) {
+ set_xen_guest_handle(seg->buf.h, HYPERCALL_BUFFER_NULL);
+ seg->buf_size = 0;
+ seg->dest_maddr = low_watermark;
+ seg->dest_size = IDENTMAP_1MiB - low_watermark;
+ seg++;
+ }
+
+ type = xen_get_kexec_type(info->kexec_flags);
+
+ arch = (info->kexec_flags & KEXEC_ARCH_MASK) >> 16;
+#if defined(__i386__) || defined(__x86_64__)
+ if (!arch)
+ arch = EM_386;
+#endif
+
+ ret = xc_kexec_load(xch, type, arch, (uint64_t)info->entry,
+ nr_segments + nr_low_segments, xen_segs);
+
+out:
+ xc_hypercall_buffer_array_destroy(xch, array);
+ free(xen_segs);
+ xc_interface_close(xch);
+
+ return ret;
+}
+
+int xen_kexec_unload(uint64_t kexec_flags)
+{
+ xc_interface *xch;
+ uint8_t type;
+ int ret;
+
+ xch = xc_interface_open(NULL, NULL, 0);
+ if (!xch)
+ return -1;
+
+ type = xen_get_kexec_type(kexec_flags);
+
+ ret = xc_kexec_unload(xch, type);
+
+ xc_interface_close(xch);
+
+ return ret;
+}
+
+int xen_kexec_status(uint64_t kexec_flags)
+{
+ xc_interface *xch;
+ uint8_t type;
+ int ret = -1;
+
+#ifdef HAVE_KEXEC_CMD_STATUS
+ xch = xc_interface_open(NULL, NULL, 0);
+ if (!xch)
+ return -1;
+
+ type = xen_get_kexec_type(kexec_flags);
+
+ ret = xc_kexec_status(xch, type);
+
+ xc_interface_close(xch);
+#endif
+
+ return ret;
+}
+
+int xen_kexec_exec(uint64_t kexec_flags)
+{
+ xc_interface *xch;
+ uint8_t type = KEXEC_TYPE_DEFAULT;
+ int ret;
+
+ xch = xc_interface_open(NULL, NULL, 0);
+ if (!xch)
+ return -1;
+
+ if (kexec_flags & KEXEC_LIVE_UPDATE)
+ type = KEXEC_TYPE_LIVE_UPDATE;
+
+ ret = xc_kexec_exec(xch, type);
+
+ xc_interface_close(xch);
+
+ return ret;
+}
+
+#else /* ! HAVE_LIBXENCTRL */
+
+int xen_get_kexec_range(int range, uint64_t *start, uint64_t *end)
+{
+ return -1;
+}
+
+int xen_kexec_load(struct kexec_info *UNUSED(info))
+{
+ return -1;
+}
+
+int xen_kexec_unload(uint64_t kexec_flags)
+{
+ return -1;
+}
+
+int xen_kexec_status(uint64_t kexec_flags)
+{
+ return -1;
+}
+
+int xen_kexec_exec(uint64_t kexec_flags)
+{
+ return -1;
+}
+
+#endif
diff --git a/kexec/kexec-xen.h b/kexec/kexec-xen.h
new file mode 100644
index 0000000..70fb576
--- /dev/null
+++ b/kexec/kexec-xen.h
@@ -0,0 +1,87 @@
+#ifndef KEXEC_XEN_H
+#define KEXEC_XEN_H
+
+#ifdef HAVE_LIBXENCTRL
+#include <xenctrl.h>
+
+#ifdef CONFIG_LIBXENCTRL_DL
+/* Lookup symbols in libxenctrl.so */
+extern void *__xc_dlsym(const char *symbol);
+
+/* Wrappers around xc_interface_open/close() to insert dlopen/dlclose() */
+extern xc_interface *__xc_interface_open(xentoollog_logger *logger,
+ xentoollog_logger *dombuild_logger,
+ unsigned open_flags);
+extern int __xc_interface_close(xc_interface *xch);
+
+/* GCC expression statements for evaluating dlsym() */
+#define __xc_call(dtype, name, args...) \
+( \
+ { dtype value; \
+ typedef dtype (*func_t)(xc_interface *, ...); \
+ func_t func = __xc_dlsym(#name); \
+ value = func(args); \
+ value; } \
+)
+#define __xc_data(dtype, name) \
+( \
+ { dtype *value = (dtype *)__xc_dlsym(#name); value; } \
+)
+
+/* The wrappers around utilized xenctrl.h functions */
+#define xc_interface_open(a, b, c) \
+ __xc_interface_open(a, b, c)
+#define xc_interface_close(a) \
+ __xc_interface_close(a)
+#define xc_version(args...) \
+ __xc_call(int, xc_version, args)
+#define xc_get_max_cpus(args...) \
+ __xc_call(int, xc_get_max_cpus, args)
+#define xc_get_machine_memory_map(args...) \
+ __xc_call(int, xc_get_machine_memory_map, args)
+#define xc_kexec_get_range(args...) \
+ __xc_call(int, xc_kexec_get_range, args)
+#define xc_kexec_load(args...) \
+ __xc_call(int, xc_kexec_load, args)
+#define xc_kexec_unload(args...) \
+ __xc_call(int, xc_kexec_unload, args)
+#define xc_kexec_status(args...) \
+ __xc_call(int, xc_kexec_status, args)
+#define xc_kexec_exec(args...) \
+ __xc_call(int, xc_kexec_exec, args)
+#define xc_hypercall_buffer_array_create(args...) \
+ __xc_call(xc_hypercall_buffer_array_t *, xc_hypercall_buffer_array_create, args)
+#define xc__hypercall_buffer_alloc_pages(args...) \
+ __xc_call(void *, xc__hypercall_buffer_alloc_pages, args)
+#define xc__hypercall_buffer_free_pages(args...) \
+ __xc_call(void , xc__hypercall_buffer_free_pages, args)
+#define xc__hypercall_buffer_array_alloc(args...) \
+ __xc_call(void *, xc__hypercall_buffer_array_alloc, args)
+#define xc__hypercall_buffer_array_get(args...) \
+ __xc_call(void *, xc__hypercall_buffer_array_get, args)
+#define xc_hypercall_buffer_array_destroy(args...) \
+ __xc_call(void *, xc_hypercall_buffer_array_destroy, args)
+
+#endif /* CONFIG_LIBXENCTRL_DL */
+
+#endif /* HAVE_LIBXENCTRL */
+
+#ifndef KEXEC_RANGE_MA_XEN
+#define KEXEC_RANGE_MA_XEN 1
+#endif
+
+#ifndef KEXEC_RANGE_MA_LIVEUPDATE
+#define KEXEC_RANGE_MA_LIVEUPDATE 7
+#endif
+
+#ifndef KEXEC_TYPE_LIVE_UPDATE
+#define KEXEC_TYPE_LIVE_UPDATE 2
+#endif
+
+#ifndef KEXEC_LIVE_UPDATE
+#define KEXEC_LIVE_UPDATE 0x00000004
+#endif
+
+int xen_get_kexec_range(int range, uint64_t *start, uint64_t *end);
+
+#endif /* KEXEC_XEN_H */
diff --git a/kexec/kexec-zlib.h b/kexec/kexec-zlib.h
new file mode 100644
index 0000000..16300f2
--- /dev/null
+++ b/kexec/kexec-zlib.h
@@ -0,0 +1,11 @@
+#ifndef __KEXEC_ZLIB_H
+#define __KEXEC_ZLIB_H
+
+#include <stdio.h>
+#include <sys/types.h>
+
+#include "config.h"
+
+int is_zlib_file(const char *filename, off_t *r_size);
+char *zlib_decompress_file(const char *filename, off_t *r_size);
+#endif /* __KEXEC_ZLIB_H */
diff --git a/kexec/kexec.8 b/kexec/kexec.8
new file mode 100644
index 0000000..3a344c5
--- /dev/null
+++ b/kexec/kexec.8
@@ -0,0 +1,399 @@
+.\" Process this file with
+.\" groff -man -Tascii kexec.8
+.\"
+.TH kexec 8 "April 2006" Linux "User Manuals"
+.SH NAME
+kexec \- directly boot into a new kernel
+.SH SYNOPSIS
+.B /sbin/kexec
+.B [-v (\-\-version)] [-f (\-\-force)] [-x (\-\-no-ifdown)] [-y (\-\-no-sync)] [-l (\-\-load)] [-p (\-\-load-panic)] [-u (\-\-unload)] [-e (\-\-exec)] [-t (\-\-type)]
+.BI [\-\-mem\-min= addr ]
+.BI [\-\-mem\-max= addr ]
+
+.SH DESCRIPTION
+.B kexec
+is a system call that enables you to load and boot into another
+kernel from the currently running kernel.
+.B kexec
+performs the function of the boot loader from within the kernel. The
+primary difference between a standard system boot and a
+.B kexec
+boot is that the hardware initialization normally performed by the BIOS
+or firmware (depending on architecture) is not performed during a
+.B kexec
+boot. This has the effect of reducing the time required for a reboot.
+.PP
+Make sure you have selected
+.B CONFIG_KEXEC=y
+when configuring the kernel. The
+.B CONFIG_KEXEC
+option enables the
+.B kexec
+system call.
+.SH USAGE
+Using
+.B kexec
+consists of
+
+.RS
+(1) loading the kernel to be rebooted to into memory, and
+.RE
+.RS
+(2) actually rebooting to the pre-loaded kernel.
+.RE
+.PP
+To load a kernel, the syntax is as follows:
+
+.RS
+.B kexec
+.RI \-l\ kernel-image
+.RI "\-\-append=" command\-line\-options
+.RI "\-\-initrd=" initrd\-image
+.RE
+
+where
+.I kernel\-image
+is the kernel file that you intend to reboot to.
+.PP
+Insert the command-line parameters that must be passed to the new
+kernel into
+.IR command\-line\-options .
+Passing the exact contents of /proc/cmdline into
+.I command\-line\-options
+is the safest way to ensure that correct values are passed to the
+rebooting kernel.
+.PP
+The optional
+.I initrd-image
+is the initrd image to be used during boot.
+.PP
+It's also possible to invoke
+.B kexec
+without an option parameter. In that case, kexec loads the specified
+kernel and then invokes
+.BR shutdown (8).
+If the shutdown scripts of your Linux distribution support
+kexec-based rebooting, they then call
+.B kexec
+.I -e
+just before actually rebooting the machine. That way, the machine does
+a clean shutdown including all shutdown scripts.
+
+.SH EXAMPLE
+.PP
+For example, if the kernel image you want to reboot to is
+.BR /boot/vmlinux ,
+the contents of /proc/cmdline is
+.BR "root\=/dev/hda1" ,
+and the path to the initrd is
+.BR /boot/initrd ,
+then you would use the following command to load the kernel:
+
+.RS
+.B kexec
+.RB \-l\ /boot/vmlinux
+.RB "\-\-append=" "root=/dev/hda1" "\ \-\-initrd=" /boot/initrd
+.RE
+.PP
+After this kernel is loaded, it can be booted to at any time using the
+command:
+
+.RS
+.BR kexec \ \-e
+.RE
+
+.SH OPTIONS
+.TP
+.B \-d\ (\-\-debug)
+Enable debugging messages.
+.TP
+.B \-S\ (\-\-status)
+Return 1 if the type (by default crash) is loaded, 0 if not. Can be used in
+conjuction with -l or -p to toggle the type. Note this option supersedes other
+options and it will
+.BR not\ load\ or\ unload\ the\ kernel.
+.TP
+.B \-e\ (\-\-exec)
+Run the currently loaded kernel. Note that it will reboot into the loaded kernel without calling shutdown(8).
+.TP
+.B \-f\ (\-\-force)
+Force an immediate
+.B kexec
+call, do not call
+.BR shutdown (8)
+(contrary to the default action without any option parameter). This option
+performs the same actions like executing
+.IR -l
+and
+.IR -e
+in one call.
+.TP
+.B \-h\ (\-\-help)
+Open a help file for
+.BR kexec .
+.TP
+.B \-i\ (\-\-no-checks)
+Fast reboot, no memory integrity checks.
+.TP
+.BI \-l\ (\-\-load) \ kernel
+Load the specified
+.I kernel
+into the current kernel.
+.TP
+.B \-p\ (\-\-load\-panic)
+Load the new kernel for use on panic.
+.TP
+.BI \-t\ (\-\-type= type )
+Specify that the new kernel is of this
+.I type.
+.TP
+.BI \-s\ (\-\-kexec-file-syscall)
+Specify that the new KEXEC_FILE_LOAD syscall should be used exclusively.
+.TP
+.BI \-c\ (\-\-kexec-syscall)
+Specify that the old KEXEC_LOAD syscall should be used exclusively.
+.TP
+.BI \-a\ (\-\-kexec-syscall-auto)
+Try the new KEXEC_FILE_LOAD syscall first and when it is not supported or the
+kernel does not understand the supplied image fall back to the old KEXEC_LOAD
+interface.
+
+There is no one single interface that always works, so this is the default.
+
+KEXEC_FILE_LOAD is required on systems that use locked-down secure boot to
+verify the kernel signature. KEXEC_LOAD may be also disabled in the kernel
+configuration.
+
+KEXEC_LOAD is required for some kernel image formats and on architectures that
+do not implement KEXEC_FILE_LOAD.
+.TP
+.B \-u\ (\-\-unload)
+Unload the current
+.B kexec
+target kernel. If a capture kernel is being unloaded then specify -p with -u.
+.TP
+.B \-v\ (\-\-version)
+Return the version number of the installed utility.
+.TP
+.B \-x\ (\-\-no\-ifdown)
+Shut down the running kernel, but restore the interface on reload.
+.TP
+.B \-y\ (\-\-no\-sync)
+Shut down the running kernel, but skip syncing the filesystems.
+.TP
+.BI \-\-mem\-min= addr
+Specify the lowest memory address
+.I addr
+to load code into.
+.TP
+.BI \-\-mem\-max= addr
+Specify the highest memory address
+.I addr
+to load code into.
+.TP
+.BI \-\-entry= addr
+Specify the jump back address. (0 means it's not jump back or preserve context)
+.TP
+.BI \-\-load\-preserve\-context
+Load the new kernel and preserve context of current kernel during kexec.
+.TP
+.BI \-\-load\-jump\-back\-helper
+Load a helper image to jump back to original kernel.
+.TP
+.BI \-\-reuseinitrd
+Reuse initrd from first boot.
+.TP
+.BI \-\-print-ckr-size
+Print crash kernel region size, if available.
+
+
+.SH SUPPORTED KERNEL FILE TYPES AND OPTIONS
+.B Beoboot-x86
+.RS
+.TP
+.B \-\-args\-elf
+Pass ELF boot notes.
+.TP
+.B \-\-args\-linux
+Pass Linux kernel style options.
+.TP
+.B \-\-real\-mode
+Use the kernel's real mode entry point.
+.RE
+.PP
+.B elf-x86
+.RS
+.TP
+.BI \-\-append= string
+Append
+.I string
+to the kernel command line.
+.TP
+.BI \-\-command\-line= string
+Set the kernel command line to
+.IR string .
+.TP
+.BI \-\-reuse-cmdline
+Use the command line from the running system. When a panic kernel is loaded, it
+strips the
+.I
+crashkernel
+parameter automatically. The
+.I BOOT_IMAGE
+parameter is also stripped.
+.TP
+.BI \-\-initrd= file
+Use
+.I file
+as the kernel's initial ramdisk.
+.TP
+.BI \-\-ramdisk= file
+Use
+.I file
+as the kernel's initial ramdisk.
+.RE
+.PP
+.B bzImage-x86
+.RS
+.TP
+.BI \-\-append= string
+Append
+.I string
+to the kernel command line.
+.TP
+.BI \-\-command\-line= string
+Set the kernel command line to
+.IR string .
+.TP
+.BI \-\-reuse-cmdline
+Use the command line from the running system. When a panic kernel is loaded, it
+strips the
+.I
+crashkernel
+parameter automatically. The
+.I BOOT_IMAGE
+parameter is also stripped.
+.TP
+.BI \-\-initrd= file
+Use
+.I file
+as the kernel's initial ramdisk.
+.TP
+.BI \-\-ramdisk= file
+Use
+.I file
+as the kernel's initial ramdisk.
+.TP
+.BI \-\-real-mode
+Use real-mode entry point.
+.RE
+.PP
+.B multiboot-x86
+.RS
+.TP
+.BI \-\-command\-line= string
+Set the kernel command line to
+.IR string .
+.TP
+.BI \-\-reuse-cmdline
+Use the command line from the running system. When a panic kernel is loaded, it
+strips the
+.I
+crashkernel
+parameter automatically. The
+.I BOOT_IMAGE
+parameter is also stripped.
+.TP
+.BI \-\-module= "mod arg1 arg2 ..."
+Load module
+.I mod
+with command-line arguments
+.I "arg1 arg2 ..."
+This parameter can be specified multiple times.
+.RE
+.PP
+.B multiboot2-x86
+.RS
+.TP
+.BI \-\-command\-line= string
+Set the kernel command line to
+.IR string .
+.TP
+.BI \-\-reuse-cmdline
+Use the command line from the running system. When a panic kernel is loaded, it
+strips the
+.I
+crashkernel
+parameter automatically. The
+.I BOOT_IMAGE
+parameter is also stripped.
+.TP
+.BI \-\-module= "mod arg1 arg2 ..."
+Load module
+.I mod
+with command-line arguments
+.I "arg1 arg2 ..."
+This parameter can be specified multiple times.
+.RE
+.PP
+.B elf-ppc64
+.RS
+.TP
+.BI \-\-reuse-cmdline
+Use the kernel command line from the running system.
+.TP
+.BI \-\-command\-line= string
+Set the kernel command line to
+.IR string.
+.TP
+.BI \-\-append= string
+Set the kernel command line to
+.IR string.
+.TP
+.BI \-\-ramdisk= file
+Use
+.IR file
+as the initial RAM disk.
+.TP
+.BI \-\-initrd= file
+Use
+.IR file
+as the initial RAM disk.
+.TP
+.BI \-\-devicetreeblob= file
+Specify device tree blob file. Not applicable while using --kexec-file-syscall.
+.TP
+.BI \-\-dtb= file
+Specify device tree blob file. Not applicable while using --kexec-file-syscall.
+.RE
+
+.SH ARCHITECTURE OPTIONS
+.TP
+.B \-\-console\-serial
+Enable the serial console.
+.TP
+.B \-\-console\-vga
+Enable the VGA console.
+.TP
+.B \-\-elf32\-core\-headers
+Prepare core headers in ELF32 format.
+.TP
+.B \-\-elf64\-core\-headers
+Prepare core headers in ELF64 format.
+.TP
+.B \-\-reset\-vga
+Attempt to reset a standard VGA device.
+.TP
+.BI \-\-serial= port
+Specify the serial
+.I port
+for debug output.
+.TP
+.BI \-\-serial\-baud= baud_rate
+Specify the
+.I baud rate
+of the serial port.
+.TP
+.BI \-\-dt\-no\-old\-root
+Do not reuse old kernel root=<device>
+param while creating flatten device tree.
diff --git a/kexec/kexec.c b/kexec/kexec.c
new file mode 100644
index 0000000..c3b182e
--- /dev/null
+++ b/kexec/kexec.c
@@ -0,0 +1,1712 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2003-2005 Eric Biederman (ebiederm@xmission.com)
+ *
+ * Modified (2007-05-15) by Francesco Chiechi to rudely handle mips platform
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define _GNU_SOURCE
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/reboot.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <fcntl.h>
+#ifndef _O_BINARY
+#define _O_BINARY 0
+#endif
+#include <getopt.h>
+#include <ctype.h>
+
+#include "config.h"
+
+#include <sha256.h>
+#include "kexec.h"
+#include "kexec-syscall.h"
+#include "kexec-elf.h"
+#include "kexec-xen.h"
+#include "kexec-sha256.h"
+#include "kexec-zlib.h"
+#include "kexec-lzma.h"
+#include <arch/options.h>
+
+#define KEXEC_LOADED_PATH "/sys/kernel/kexec_loaded"
+#define KEXEC_CRASH_LOADED_PATH "/sys/kernel/kexec_crash_loaded"
+
+unsigned long long mem_min = 0;
+unsigned long long mem_max = ULONG_MAX;
+static unsigned long kexec_flags = 0;
+/* Flags for kexec file (fd) based syscall */
+static unsigned long kexec_file_flags = 0;
+int kexec_debug = 0;
+
+void dbgprint_mem_range(const char *prefix, struct memory_range *mr, int nr_mr)
+{
+ int i;
+ dbgprintf("%s\n", prefix);
+ for (i = 0; i < nr_mr; i++) {
+ dbgprintf("%016llx-%016llx (%d)\n", mr[i].start,
+ mr[i].end, mr[i].type);
+ }
+}
+
+void die(const char *fmt, ...)
+{
+ va_list args;
+ va_start(args, fmt);
+ vfprintf(stderr, fmt, args);
+ va_end(args);
+ fflush(stdout);
+ fflush(stderr);
+ exit(1);
+}
+
+static char *xstrdup(const char *str)
+{
+ char *new = strdup(str);
+ if (!new)
+ die("Cannot strdup \"%s\": %s\n",
+ str, strerror(errno));
+ return new;
+}
+
+void *xmalloc(size_t size)
+{
+ void *buf;
+ if (!size)
+ return NULL;
+ buf = malloc(size);
+ if (!buf) {
+ die("Cannot malloc %ld bytes: %s\n",
+ size + 0UL, strerror(errno));
+ }
+ return buf;
+}
+
+void *xrealloc(void *ptr, size_t size)
+{
+ void *buf;
+ buf = realloc(ptr, size);
+ if (!buf) {
+ die("Cannot realloc %ld bytes: %s\n",
+ size + 0UL, strerror(errno));
+ }
+ return buf;
+}
+
+int valid_memory_range(struct kexec_info *info,
+ unsigned long sstart, unsigned long send)
+{
+ int i;
+ if (sstart > send) {
+ return 0;
+ }
+ if ((send > mem_max) || (sstart < mem_min)) {
+ return 0;
+ }
+ for (i = 0; i < info->memory_ranges; i++) {
+ unsigned long mstart, mend;
+ /* Only consider memory ranges */
+ if (info->memory_range[i].type != RANGE_RAM)
+ continue;
+ mstart = info->memory_range[i].start;
+ mend = info->memory_range[i].end;
+ if (i < info->memory_ranges - 1
+ && mend == info->memory_range[i+1].start
+ && info->memory_range[i+1].type == RANGE_RAM)
+ mend = info->memory_range[i+1].end;
+
+ /* Check to see if we are fully contained */
+ if ((mstart <= sstart) && (mend >= send)) {
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static int valid_memory_segment(struct kexec_info *info,
+ struct kexec_segment *segment)
+{
+ unsigned long sstart, send;
+ sstart = (unsigned long)segment->mem;
+ send = sstart + segment->memsz - 1;
+
+ return valid_memory_range(info, sstart, send);
+}
+
+void print_segments(FILE *f, struct kexec_info *info)
+{
+ int i;
+
+ fprintf(f, "nr_segments = %d\n", info->nr_segments);
+ for (i = 0; i < info->nr_segments; i++) {
+ fprintf(f, "segment[%d].buf = %p\n", i,
+ info->segment[i].buf);
+ fprintf(f, "segment[%d].bufsz = 0x%zx\n", i,
+ info->segment[i].bufsz);
+ fprintf(f, "segment[%d].mem = %p\n", i,
+ info->segment[i].mem);
+ fprintf(f, "segment[%d].memsz = 0x%zx\n", i,
+ info->segment[i].memsz);
+ }
+}
+
+int sort_segments(struct kexec_info *info)
+{
+ int i, j;
+ void *end;
+
+ /* Do a stupid insertion sort... */
+ for (i = 0; i < info->nr_segments; i++) {
+ int tidx;
+ struct kexec_segment temp;
+ tidx = i;
+ for (j = i +1; j < info->nr_segments; j++) {
+ if (info->segment[j].mem < info->segment[tidx].mem) {
+ tidx = j;
+ }
+ }
+ if (tidx != i) {
+ temp = info->segment[tidx];
+ info->segment[tidx] = info->segment[i];
+ info->segment[i] = temp;
+ }
+ }
+ /* Now see if any of the segments overlap */
+ end = 0;
+ for (i = 0; i < info->nr_segments; i++) {
+ if (end > info->segment[i].mem) {
+ fprintf(stderr, "Overlapping memory segments at %p\n",
+ end);
+ return -1;
+ }
+ end = ((char *)info->segment[i].mem) + info->segment[i].memsz;
+ }
+ return 0;
+}
+
+unsigned long locate_hole(struct kexec_info *info,
+ unsigned long hole_size, unsigned long hole_align,
+ unsigned long hole_min, unsigned long hole_max,
+ int hole_end)
+{
+ int i, j;
+ struct memory_range *mem_range;
+ int max_mem_ranges, mem_ranges;
+ unsigned long hole_base;
+
+ if (hole_end == 0) {
+ die("Invalid hole end argument of 0 specified to locate_hole");
+ }
+
+ /* Set an initial invalid value for the hole base */
+ hole_base = ULONG_MAX;
+
+ /* Align everything to at least a page size boundary */
+ if (hole_align < (unsigned long)getpagesize()) {
+ hole_align = getpagesize();
+ }
+
+ /* Compute the free memory ranges */
+ max_mem_ranges = info->memory_ranges + info->nr_segments;
+ mem_range = xmalloc(max_mem_ranges *sizeof(struct memory_range));
+ mem_ranges = 0;
+
+ /* Perform a merge on the 2 sorted lists of memory ranges */
+ for (j = 0, i = 0; i < info->memory_ranges; i++) {
+ unsigned long long sstart, send;
+ unsigned long long mstart, mend;
+ mstart = info->memory_range[i].start;
+ mend = info->memory_range[i].end;
+ if (info->memory_range[i].type != RANGE_RAM)
+ continue;
+ while ((j < info->nr_segments) &&
+ (((unsigned long)info->segment[j].mem) <= mend)) {
+ sstart = (unsigned long)info->segment[j].mem;
+ send = sstart + info->segment[j].memsz -1;
+ if (mstart < sstart) {
+ mem_range[mem_ranges].start = mstart;
+ mem_range[mem_ranges].end = sstart -1;
+ mem_range[mem_ranges].type = RANGE_RAM;
+ mem_ranges++;
+ }
+ mstart = send +1;
+ j++;
+ }
+ if (mstart < mend) {
+ mem_range[mem_ranges].start = mstart;
+ mem_range[mem_ranges].end = mend;
+ mem_range[mem_ranges].type = RANGE_RAM;
+ mem_ranges++;
+ }
+ }
+ /* Now find the end of the last memory_range I can use */
+ for (i = 0; i < mem_ranges; i++) {
+ unsigned long long start, end, size;
+ start = mem_range[i].start;
+ end = mem_range[i].end;
+ /* First filter the range start and end values
+ * through the lens of mem_min, mem_max and hole_align.
+ */
+ if (start < mem_min) {
+ start = mem_min;
+ }
+ if (start < hole_min) {
+ start = hole_min;
+ }
+ start = _ALIGN(start, hole_align);
+ if (end > mem_max) {
+ end = mem_max;
+ }
+ if (end > hole_max) {
+ end = hole_max;
+ }
+ /* Is this still a valid memory range? */
+ if ((start >= end) || (start >= mem_max) || (end <= mem_min)) {
+ continue;
+ }
+ /* Is there enough space left so we can use it? */
+ size = end - start;
+ if (!hole_size || size >= hole_size - 1) {
+ if (hole_end > 0) {
+ hole_base = start;
+ break;
+ } else {
+ hole_base = _ALIGN_DOWN(end - hole_size + 1,
+ hole_align);
+ }
+ }
+ }
+ free(mem_range);
+ if (hole_base == ULONG_MAX) {
+ fprintf(stderr, "Could not find a free area of memory of "
+ "0x%lx bytes...\n", hole_size);
+ return ULONG_MAX;
+ }
+ if (hole_size && (hole_base + hole_size - 1) > hole_max) {
+ fprintf(stderr, "Could not find a free area of memory below: "
+ "0x%lx...\n", hole_max);
+ return ULONG_MAX;
+ }
+ return hole_base;
+}
+
+void add_segment_phys_virt(struct kexec_info *info,
+ const void *buf, size_t bufsz,
+ unsigned long base, size_t memsz, int phys)
+{
+ unsigned long last;
+ size_t size;
+ int pagesize;
+
+ if (bufsz > memsz) {
+ bufsz = memsz;
+ }
+ /* Forget empty segments */
+ if (memsz == 0) {
+ return;
+ }
+
+ /* Round memsz up to a multiple of pagesize */
+ pagesize = getpagesize();
+ memsz = _ALIGN(memsz, pagesize);
+
+ /* Verify base is pagesize aligned.
+ * Finding a way to cope with this problem
+ * is important but for now error so at least
+ * we are not surprised by the code doing the wrong
+ * thing.
+ */
+ if (base & (pagesize -1)) {
+ die("Base address: 0x%lx is not page aligned\n", base);
+ }
+
+ if (phys)
+ base = virt_to_phys(base);
+
+ last = base + memsz -1;
+ if (!valid_memory_range(info, base, last)) {
+ die("Invalid memory segment %p - %p\n",
+ (void *)base, (void *)last);
+ }
+
+ size = (info->nr_segments + 1) * sizeof(info->segment[0]);
+ info->segment = xrealloc(info->segment, size);
+ info->segment[info->nr_segments].buf = buf;
+ info->segment[info->nr_segments].bufsz = bufsz;
+ info->segment[info->nr_segments].mem = (void *)base;
+ info->segment[info->nr_segments].memsz = memsz;
+ info->nr_segments++;
+ if (info->nr_segments > KEXEC_MAX_SEGMENTS) {
+ fprintf(stderr, "Warning: kernel segment limit reached. "
+ "This will likely fail\n");
+ }
+}
+
+unsigned long add_buffer_phys_virt(struct kexec_info *info,
+ const void *buf, unsigned long bufsz, unsigned long memsz,
+ unsigned long buf_align, unsigned long buf_min, unsigned long buf_max,
+ int buf_end, int phys)
+{
+ unsigned long base;
+ int result;
+ int pagesize;
+
+ result = sort_segments(info);
+ if (result < 0) {
+ die("sort_segments failed\n");
+ }
+
+ /* Round memsz up to a multiple of pagesize */
+ pagesize = getpagesize();
+ memsz = _ALIGN(memsz, pagesize);
+
+ base = locate_hole(info, memsz, buf_align, buf_min, buf_max, buf_end);
+ if (base == ULONG_MAX) {
+ die("locate_hole failed\n");
+ }
+
+ add_segment_phys_virt(info, buf, bufsz, base, memsz, phys);
+ return base;
+}
+
+unsigned long add_buffer_virt(struct kexec_info *info, const void *buf,
+ unsigned long bufsz, unsigned long memsz,
+ unsigned long buf_align, unsigned long buf_min,
+ unsigned long buf_max, int buf_end)
+{
+ return add_buffer_phys_virt(info, buf, bufsz, memsz, buf_align,
+ buf_min, buf_max, buf_end, 0);
+}
+
+static int find_memory_range(struct kexec_info *info,
+ unsigned long *base, unsigned long *size)
+{
+ int i;
+ unsigned long start, end;
+
+ for (i = 0; i < info->memory_ranges; i++) {
+ if (info->memory_range[i].type != RANGE_RAM)
+ continue;
+ start = info->memory_range[i].start;
+ end = info->memory_range[i].end;
+ if (end > *base && start < *base + *size) {
+ if (start > *base) {
+ *size = *base + *size - start;
+ *base = start;
+ }
+ if (end < *base + *size)
+ *size = end - *base;
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static int find_segment_hole(struct kexec_info *info,
+ unsigned long *base, unsigned long *size)
+{
+ int i;
+ unsigned long seg_base, seg_size;
+
+ for (i = 0; i < info->nr_segments; i++) {
+ seg_base = (unsigned long)info->segment[i].mem;
+ seg_size = info->segment[i].memsz;
+
+ if (seg_base + seg_size <= *base)
+ continue;
+ else if (seg_base >= *base + *size)
+ break;
+ else if (*base < seg_base) {
+ *size = seg_base - *base;
+ break;
+ } else if (seg_base + seg_size < *base + *size) {
+ *size = *base + *size - (seg_base + seg_size);
+ *base = seg_base + seg_size;
+ } else {
+ *size = 0;
+ break;
+ }
+ }
+ return *size;
+}
+
+static int add_backup_segments(struct kexec_info *info,
+ unsigned long backup_base,
+ unsigned long backup_size)
+{
+ unsigned long mem_base, mem_size, bkseg_base, bkseg_size, start, end;
+ unsigned long pagesize;
+
+ pagesize = getpagesize();
+ while (backup_size) {
+ mem_base = backup_base;
+ mem_size = backup_size;
+ if (!find_memory_range(info, &mem_base, &mem_size))
+ break;
+ backup_size = backup_base + backup_size - \
+ (mem_base + mem_size);
+ backup_base = mem_base + mem_size;
+ while (mem_size) {
+ bkseg_base = mem_base;
+ bkseg_size = mem_size;
+ if (sort_segments(info) < 0)
+ return -1;
+ if (!find_segment_hole(info, &bkseg_base, &bkseg_size))
+ break;
+ start = _ALIGN(bkseg_base, pagesize);
+ end = _ALIGN_DOWN(bkseg_base + bkseg_size, pagesize);
+ add_segment_phys_virt(info, NULL, 0,
+ start, end-start, 0);
+ mem_size = mem_base + mem_size - \
+ (bkseg_base + bkseg_size);
+ mem_base = bkseg_base + bkseg_size;
+ }
+ }
+ return 0;
+}
+
+static char *slurp_fd(int fd, const char *filename, off_t size, off_t *nread)
+{
+ char *buf;
+ off_t progress;
+ ssize_t result;
+
+ buf = xmalloc(size);
+ progress = 0;
+ while (progress < size) {
+ result = read(fd, buf + progress, size - progress);
+ if (result < 0) {
+ if ((errno == EINTR) || (errno == EAGAIN))
+ continue;
+ fprintf(stderr, "Read on %s failed: %s\n", filename,
+ strerror(errno));
+ free(buf);
+ close(fd);
+ return NULL;
+ }
+ if (result == 0)
+ /* EOF */
+ break;
+ progress += result;
+ }
+ result = close(fd);
+ if (result < 0)
+ die("Close of %s failed: %s\n", filename, strerror(errno));
+
+ if (nread)
+ *nread = progress;
+ return buf;
+}
+
+static char *slurp_file_generic(const char *filename, off_t *r_size,
+ int use_mmap)
+{
+ int fd;
+ char *buf;
+ off_t size, err, nread;
+ ssize_t result;
+ struct stat stats;
+
+ if (!filename) {
+ *r_size = 0;
+ return 0;
+ }
+ fd = open(filename, O_RDONLY | _O_BINARY);
+ if (fd < 0) {
+ die("Cannot open `%s': %s\n",
+ filename, strerror(errno));
+ }
+ result = fstat(fd, &stats);
+ if (result < 0) {
+ die("Cannot stat: %s: %s\n",
+ filename, strerror(errno));
+ }
+ /*
+ * Seek in case the kernel is a character node like /dev/ubi0_0.
+ * This does not work on regular files which live in /proc and
+ * we need this for some /proc/device-tree entries
+ */
+ if (S_ISCHR(stats.st_mode)) {
+
+ size = lseek(fd, 0, SEEK_END);
+ if (size < 0)
+ die("Can not seek file %s: %s\n", filename,
+ strerror(errno));
+
+ err = lseek(fd, 0, SEEK_SET);
+ if (err < 0)
+ die("Can not seek to the begin of file %s: %s\n",
+ filename, strerror(errno));
+ buf = slurp_fd(fd, filename, size, &nread);
+ } else if (S_ISBLK(stats.st_mode)) {
+ err = ioctl(fd, BLKGETSIZE64, &size);
+ if (err < 0)
+ die("Can't retrieve size of block device %s: %s\n",
+ filename, strerror(errno));
+ buf = slurp_fd(fd, filename, size, &nread);
+ } else {
+ size = stats.st_size;
+ if (use_mmap) {
+ buf = mmap(NULL, size, PROT_READ|PROT_WRITE,
+ MAP_PRIVATE, fd, 0);
+ nread = size;
+ } else {
+ buf = slurp_fd(fd, filename, size, &nread);
+ }
+ }
+ if ((use_mmap && (buf == MAP_FAILED)) || (!use_mmap && (buf == NULL)))
+ die("Cannot read %s", filename);
+
+ if (nread != size)
+ die("Read on %s ended before stat said it should\n", filename);
+
+ *r_size = size;
+ close(fd);
+ return buf;
+}
+
+/*
+ * Read file into malloced buffer.
+ */
+char *slurp_file(const char *filename, off_t *r_size)
+{
+ return slurp_file_generic(filename, r_size, 0);
+}
+
+/*
+ * Map "normal" file or read "character device" into malloced buffer.
+ * You must not use free, realloc, etc. for the returned buffer.
+ */
+char *slurp_file_mmap(const char *filename, off_t *r_size)
+{
+ return slurp_file_generic(filename, r_size, 1);
+}
+
+/* This functions reads either specified number of bytes from the file or
+ lesser if EOF is met. */
+
+char *slurp_file_len(const char *filename, off_t size, off_t *nread)
+{
+ int fd;
+
+ if (!filename)
+ return 0;
+ fd = open(filename, O_RDONLY | _O_BINARY);
+ if (fd < 0) {
+ fprintf(stderr, "Cannot open %s: %s\n", filename,
+ strerror(errno));
+ return 0;
+ }
+
+ return slurp_fd(fd, filename, size, nread);
+}
+
+char *slurp_decompress_file(const char *filename, off_t *r_size)
+{
+ char *kernel_buf;
+
+ kernel_buf = zlib_decompress_file(filename, r_size);
+ if (!kernel_buf) {
+ kernel_buf = lzma_decompress_file(filename, r_size);
+ if (!kernel_buf)
+ return slurp_file(filename, r_size);
+ }
+ return kernel_buf;
+}
+
+static int copybuf_memfd(const char *kernel_buf, size_t size)
+{
+ int fd, count;
+
+ fd = memfd_create("kernel", MFD_ALLOW_SEALING);
+ if (fd == -1)
+ return fd;
+
+ count = write(fd, kernel_buf, size);
+ if (count < 0)
+ return -1;
+
+ return fd;
+}
+
+static void update_purgatory(struct kexec_info *info)
+{
+ static const uint8_t null_buf[256];
+ sha256_context ctx;
+ sha256_digest_t digest;
+ struct sha256_region region[SHA256_REGIONS];
+ int i, j;
+ /* Don't do anything if we are not using purgatory */
+ if (!info->rhdr.e_shdr) {
+ return;
+ }
+ arch_update_purgatory(info);
+
+ if (info->skip_checks) {
+ unsigned int tmp = 1;
+
+ elf_rel_set_symbol(&info->rhdr, "skip_checks", &tmp,
+ sizeof(tmp));
+ return;
+ }
+
+ memset(region, 0, sizeof(region));
+ sha256_starts(&ctx);
+ /* Compute a hash of the loaded kernel */
+ for(j = i = 0; i < info->nr_segments; i++) {
+ unsigned long nullsz;
+ /* Don't include purgatory in the checksum. The stack
+ * in the bss will definitely change, and the .data section
+ * will also change when we poke the sha256_digest in there.
+ * A very clever/careful person could probably improve this.
+ */
+ if (info->segment[i].mem == (void *)info->rhdr.rel_addr) {
+ continue;
+ }
+ sha256_update(&ctx, info->segment[i].buf,
+ info->segment[i].bufsz);
+ nullsz = info->segment[i].memsz - info->segment[i].bufsz;
+ while(nullsz) {
+ unsigned long bytes = nullsz;
+ if (bytes > sizeof(null_buf)) {
+ bytes = sizeof(null_buf);
+ }
+ sha256_update(&ctx, null_buf, bytes);
+ nullsz -= bytes;
+ }
+ region[j].start = (unsigned long) info->segment[i].mem;
+ region[j].len = info->segment[i].memsz;
+ j++;
+ }
+ sha256_finish(&ctx, digest);
+ elf_rel_set_symbol(&info->rhdr, "sha256_regions", &region,
+ sizeof(region));
+ elf_rel_set_symbol(&info->rhdr, "sha256_digest", &digest,
+ sizeof(digest));
+}
+
+/*
+ * Load the new kernel
+ */
+static int my_load(const char *type, int fileind, int argc, char **argv,
+ unsigned long kexec_flags, int skip_checks, void *entry)
+{
+ char *kernel;
+ char *kernel_buf;
+ off_t kernel_size;
+ int i = 0;
+ int result;
+ struct kexec_info info;
+ long native_arch;
+ int guess_only = 0;
+
+ memset(&info, 0, sizeof(info));
+ info.kexec_flags = kexec_flags;
+ info.skip_checks = skip_checks;
+
+ result = 0;
+ if (argc - fileind <= 0) {
+ fprintf(stderr, "No kernel specified\n");
+ usage();
+ return -1;
+ }
+ kernel = argv[fileind];
+ /* slurp in the input kernel */
+ kernel_buf = slurp_decompress_file(kernel, &kernel_size);
+
+ dbgprintf("kernel: %p kernel_size: %#llx\n",
+ kernel_buf, (unsigned long long)kernel_size);
+
+ if (get_memory_ranges(&info.memory_range, &info.memory_ranges,
+ info.kexec_flags) < 0 || info.memory_ranges == 0) {
+ fprintf(stderr, "Could not get memory layout\n");
+ return -1;
+ }
+ /* if a kernel type was specified, try to honor it */
+ if (type) {
+ for (i = 0; i < file_types; i++) {
+ if (strcmp(type, file_type[i].name) == 0)
+ break;
+ }
+ if (i == file_types) {
+ fprintf(stderr, "Unsupported kernel type %s\n", type);
+ return -1;
+ } else {
+ /* make sure our file is really of that type */
+ if (file_type[i].probe(kernel_buf, kernel_size) < 0)
+ guess_only = 1;
+ }
+ }
+ if (!type || guess_only) {
+ for (i = 0; i < file_types; i++) {
+ if (file_type[i].probe(kernel_buf, kernel_size) == 0)
+ break;
+ }
+ if (i == file_types) {
+ fprintf(stderr, "Cannot determine the file type "
+ "of %s\n", kernel);
+ return -1;
+ } else {
+ if (guess_only) {
+ fprintf(stderr, "Wrong file type %s, "
+ "file matches type %s\n",
+ type, file_type[i].name);
+ return -1;
+ }
+ }
+ }
+ /* Figure out our native architecture before load */
+ native_arch = physical_arch();
+ if (native_arch < 0) {
+ return -1;
+ }
+ info.kexec_flags |= native_arch;
+
+ result = file_type[i].load(argc, argv, kernel_buf, kernel_size, &info);
+ if (result < 0) {
+ switch (result) {
+ case ENOCRASHKERNEL:
+ fprintf(stderr,
+ "No crash kernel segment found in /proc/iomem\n"
+ "Please check the crashkernel= boot parameter.\n");
+ break;
+ case EFAILED:
+ default:
+ fprintf(stderr, "Cannot load %s\n", kernel);
+ break;
+ }
+ return result;
+ }
+ /* If we are not in native mode setup an appropriate trampoline */
+ if (arch_compat_trampoline(&info) < 0) {
+ return -1;
+ }
+ if (info.kexec_flags & KEXEC_PRESERVE_CONTEXT) {
+ add_backup_segments(&info, mem_min, mem_max - mem_min + 1);
+ }
+ /* Verify all of the segments load to a valid location in memory */
+ for (i = 0; i < info.nr_segments; i++) {
+ if (!valid_memory_segment(&info, info.segment +i)) {
+ fprintf(stderr, "Invalid memory segment %p - %p\n",
+ info.segment[i].mem,
+ ((char *)info.segment[i].mem) +
+ info.segment[i].memsz);
+ return -1;
+ }
+ }
+ /* Sort the segments and verify we don't have overlaps */
+ if (sort_segments(&info) < 0) {
+ return -1;
+ }
+ /* if purgatory is loaded update it */
+ update_purgatory(&info);
+ if (entry)
+ info.entry = entry;
+
+ dbgprintf("kexec_load: entry = %p flags = 0x%lx\n",
+ info.entry, info.kexec_flags);
+ if (kexec_debug)
+ print_segments(stderr, &info);
+
+ if (xen_present())
+ result = xen_kexec_load(&info);
+ else
+ result = kexec_load(info.entry,
+ info.nr_segments, info.segment,
+ info.kexec_flags);
+ if (result != 0) {
+ /* The load failed, print some debugging information */
+ fprintf(stderr, "kexec_load failed: %s\n",
+ strerror(errno));
+ fprintf(stderr, "entry = %p flags = 0x%lx\n",
+ info.entry, info.kexec_flags);
+ print_segments(stderr, &info);
+ }
+ return result;
+}
+
+static int kexec_file_unload(unsigned long kexec_file_flags)
+{
+ int ret = 0;
+
+ if (!is_kexec_file_load_implemented())
+ return EFALLBACK;
+
+ ret = kexec_file_load(-1, -1, 0, NULL, kexec_file_flags);
+ if (ret != 0) {
+ if (errno == ENOSYS) {
+ ret = EFALLBACK;
+ } else {
+ /*
+ * The unload failed, print some debugging
+ * information */
+ fprintf(stderr, "kexec_file_load(unload) failed: %s\n",
+ strerror(errno));
+ ret = EFAILED;
+ }
+ }
+ return ret;
+}
+
+static int k_unload (unsigned long kexec_flags)
+{
+ int result;
+ long native_arch;
+
+ /* set the arch */
+ native_arch = physical_arch();
+ if (native_arch < 0) {
+ return -1;
+ }
+ kexec_flags |= native_arch;
+
+ if (xen_present())
+ result = xen_kexec_unload(kexec_flags);
+ else
+ result = kexec_load(NULL, 0, NULL, kexec_flags);
+ if (result != 0) {
+ /* The unload failed, print some debugging information */
+ fprintf(stderr, "kexec unload failed: %s\n",
+ strerror(errno));
+ }
+ return result;
+}
+
+/*
+ * Start a reboot.
+ */
+static int my_shutdown(void)
+{
+ char *args[] = {
+ "shutdown",
+ "-r",
+ "now",
+ NULL
+ };
+
+ execv("/sbin/shutdown", args);
+ execv("/etc/shutdown", args);
+ execv("/bin/shutdown", args);
+
+ perror("shutdown");
+ return -1;
+}
+
+/*
+ * Exec the new kernel. If successful, this triggers an immediate reboot
+ * and does not return, but Xen Live Update is an exception (more on this
+ * below).
+ */
+static int my_exec(void)
+{
+ if (xen_present()) {
+ int ret;
+
+ /*
+ * There are two cases in which the Xen hypercall may return:
+ * 1) An error occurred, e.g. the kexec image was not loaded.
+ * The exact error is indicated by errno.
+ * 2) Live Update was successfully scheduled. Note that unlike
+ * a normal kexec, Live Update happens asynchronously, i.e.
+ * the hypercall merely schedules the kexec operation and
+ * returns immediately.
+ */
+ ret = xen_kexec_exec(kexec_flags);
+ if ((kexec_flags & KEXEC_LIVE_UPDATE) && !ret)
+ return 0;
+ } else
+ reboot(LINUX_REBOOT_CMD_KEXEC);
+ /* I have failed if I make it here */
+ fprintf(stderr, "kexec failed: %s\n",
+ strerror(errno));
+ return -1;
+}
+
+static int load_jump_back_helper_image(unsigned long kexec_flags, void *entry)
+{
+ int result;
+ struct kexec_segment seg;
+
+ memset(&seg, 0, sizeof(seg));
+ result = kexec_load(entry, 1, &seg, kexec_flags);
+ return result;
+}
+
+static int kexec_loaded(const char *file)
+{
+ long ret = -1;
+ FILE *fp;
+ char *p;
+ char line[3];
+
+ /* No way to tell if an image is loaded under Xen, assume it is. */
+ if (xen_present())
+ return 1;
+
+ fp = fopen(file, "r");
+ if (fp == NULL)
+ return -1;
+
+ p = fgets(line, sizeof(line), fp);
+ fclose(fp);
+
+ if (p == NULL)
+ return -1;
+
+ ret = strtol(line, &p, 10);
+
+ /* Too long */
+ if (ret > INT_MAX)
+ return -1;
+
+ /* No digits were found */
+ if (p == line)
+ return -1;
+
+ return (int)ret;
+}
+
+/*
+ * Jump back to the original kernel
+ */
+static int my_load_jump_back_helper(unsigned long kexec_flags, void *entry)
+{
+ int result;
+
+ if (kexec_loaded(KEXEC_LOADED_PATH)) {
+ fprintf(stderr, "There is kexec kernel loaded, make sure "
+ "you are in kexeced kernel.\n");
+ return -1;
+ }
+ if (!entry) {
+ fprintf(stderr, "Please specify jump back entry "
+ "in command line\n");
+ return -1;
+ }
+ result = load_jump_back_helper_image(kexec_flags, entry);
+ if (result) {
+ fprintf(stderr, "load jump back kernel failed: %s\n",
+ strerror(errno));
+ return result;
+ }
+ return result;
+}
+
+static void version(void)
+{
+ printf(PACKAGE_STRING "\n");
+}
+
+void usage(void)
+{
+ int i;
+
+ version();
+ printf("Usage: kexec [OPTION]... [kernel]\n"
+ "Directly reboot into a new kernel\n"
+ "\n"
+ " -h, --help Print this help.\n"
+ " -v, --version Print the version of kexec.\n"
+ " -f, --force Force an immediate kexec,\n"
+ " don't call shutdown.\n"
+ " -i, --no-checks Fast reboot, no memory integrity checks.\n"
+ " -x, --no-ifdown Don't bring down network interfaces.\n"
+ " -y, --no-sync Don't sync filesystems before kexec.\n"
+ " -l, --load Load the new kernel into the\n"
+ " current kernel.\n"
+ " -p, --load-panic Load the new kernel for use on panic.\n"
+ " -u, --unload Unload the current kexec target kernel.\n"
+ " If capture kernel is being unloaded\n"
+ " specify -p with -u.\n"
+ " -e, --exec Execute a currently loaded kernel.\n"
+ " --exec-live-update Execute a currently loaded xen image after\n"
+ "storing the state required to live update.\n"
+ " -t, --type=TYPE Specify the new kernel is of this type.\n"
+ " --mem-min=<addr> Specify the lowest memory address to\n"
+ " load code into.\n"
+ " --mem-max=<addr> Specify the highest memory address to\n"
+ " load code into.\n"
+ " --reuseinitrd Reuse initrd from first boot.\n"
+ " --print-ckr-size Print crash kernel region size.\n"
+ " --load-preserve-context Load the new kernel and preserve\n"
+ " context of current kernel during kexec.\n"
+ " --load-jump-back-helper Load a helper image to jump back\n"
+ " to original kernel.\n"
+ " --load-live-update Load the new kernel to overwrite the\n"
+ " running kernel.\n"
+ " --entry=<addr> Specify jump back address.\n"
+ " (0 means it's not jump back or\n"
+ " preserve context)\n"
+ " to original kernel.\n"
+ " -s, --kexec-file-syscall Use file based syscall for kexec operation\n"
+ " -c, --kexec-syscall Use the kexec_load syscall for for compatibility\n"
+ " with systems that don't support -s\n"
+ " -a, --kexec-syscall-auto Use file based syscall for kexec and fall\n"
+ " back to the compatibility syscall when file based\n"
+ " syscall is not supported or the kernel did not\n"
+ " understand the image (default)\n"
+ " -d, --debug Enable debugging to help spot a failure.\n"
+ " -S, --status Return 1 if the type (by default crash) is loaded,\n"
+ " 0 if not.\n"
+ "\n"
+ "Supported kernel file types and options: \n");
+ for (i = 0; i < file_types; i++) {
+ printf("%s\n", file_type[i].name);
+ file_type[i].usage();
+ }
+ printf( "Architecture options: \n");
+ arch_usage();
+ printf("\n");
+}
+
+static int k_status(unsigned long kexec_flags)
+{
+ int result;
+ long native_arch;
+
+ /* set the arch */
+ native_arch = physical_arch();
+ if (native_arch < 0) {
+ return -1;
+ }
+ kexec_flags |= native_arch;
+
+ if (xen_present())
+ result = xen_kexec_status(kexec_flags);
+ else {
+ if (kexec_flags & KEXEC_ON_CRASH)
+ result = kexec_loaded(KEXEC_CRASH_LOADED_PATH);
+ else
+ result = kexec_loaded(KEXEC_LOADED_PATH);
+ }
+ return result;
+}
+
+
+/*
+ * Remove parameter from a kernel command line. Helper function by get_command_line().
+ */
+void remove_parameter(char *line, const char *param_name)
+{
+ char *start, *end;
+
+ start = strstr(line, param_name);
+
+ /* parameter not found */
+ if (!start)
+ return;
+
+ /*
+ * check if that's really the start of a parameter and not in
+ * the middle of the word
+ */
+ if (start != line && !isspace(*(start-1)))
+ return;
+
+ end = strstr(start, " ");
+ if (!end)
+ *start = 0;
+ else {
+ memmove(start, end+1, strlen(end));
+ *(end + strlen(end)) = 0;
+ }
+}
+
+static ssize_t _read(int fd, void *buf, size_t count)
+{
+ ssize_t ret, offset = 0;
+
+ do {
+ ret = read(fd, buf + offset, count - offset);
+ if (ret < 0) {
+ if ((errno == EINTR) || (errno == EAGAIN))
+ continue;
+ return ret;
+ }
+ offset += ret;
+ } while (ret && offset < count);
+
+ return offset;
+}
+
+static char *slurp_proc_file(const char *filename, size_t *len)
+{
+ ssize_t ret, startpos = 0;
+ unsigned int size = 64;
+ char *buf = NULL, *tmp;
+ int fd;
+
+ fd = open(filename, O_RDONLY);
+ if (fd == -1)
+ return NULL;
+
+ do {
+ size *= 2;
+ tmp = realloc(buf, size);
+ if (!tmp) {
+ free(buf);
+ return NULL;
+ }
+ buf = tmp;
+
+ ret = _read(fd, buf + startpos, size - startpos);
+ if (ret < 0) {
+ free(buf);
+ return NULL;
+ }
+
+ startpos += ret;
+
+ } while(ret);
+
+ *len = startpos;
+ return buf;
+}
+
+/*
+ * Returns the contents of the current command line to be used with
+ * --reuse-cmdline option. The function gets called from architecture specific
+ * code. If we load a panic kernel, that function will strip the
+ * "crashkernel=" option because it does not make sense that the crashkernel
+ * reserves memory for a crashkernel (well, it would not boot since the
+ * amount is exactly the same as the crashkernel has overall memory). Also,
+ * remove the BOOT_IMAGE from lilo (and others) since that doesn't make
+ * sense here any more. The kernel could be different even if we reuse the
+ * commandline.
+ *
+ * The function returns dynamically allocated memory.
+ */
+char *get_command_line(void)
+{
+ char *p, *line;
+ size_t size;
+
+ line = slurp_proc_file("/proc/cmdline", &size);
+ if (!line || !size)
+ die("Failed to read /proc/cmdline\n");
+
+ /* strip newline */
+ line[size-1] = '\0';
+
+ p = strpbrk(line, "\r\n");
+ if (p)
+ *p = '\0';
+
+ remove_parameter(line, "BOOT_IMAGE");
+ if (kexec_flags & KEXEC_ON_CRASH)
+ remove_parameter(line, "crashkernel");
+
+ return line;
+}
+
+/* check we retained the initrd */
+static void check_reuse_initrd(void)
+{
+ char *str = NULL;
+ char *line = get_command_line();
+
+ str = strstr(line, "retain_initrd");
+ free(line);
+
+ if (str == NULL)
+ die("unrecoverable error: current boot didn't "
+ "retain the initrd for reuse.\n");
+}
+
+char *concat_cmdline(const char *base, const char *append)
+{
+ char *cmdline;
+ if (!base && !append)
+ return NULL;
+ if (append && !base)
+ return xstrdup(append);
+ if (base && !append)
+ return xstrdup(base);
+ cmdline = xmalloc(strlen(base) + 1 + strlen(append) + 1);
+ strcpy(cmdline, base);
+ strcat(cmdline, " ");
+ strcat(cmdline, append);
+ return cmdline;
+}
+
+void cmdline_add_liveupdate(char **base)
+{
+ uint64_t lu_start, lu_end, lu_sizeM;
+ char *str;
+ char buf[64];
+ size_t len;
+
+ if ( !xen_present() )
+ return;
+
+ xen_get_kexec_range(KEXEC_RANGE_MA_LIVEUPDATE, &lu_start, &lu_end);
+ lu_sizeM = (lu_end - lu_start) / (1024 * 1024) + 1;
+ sprintf(buf, " liveupdate=%lluM@0x%llx", (unsigned long long)lu_sizeM,
+ (unsigned long long)lu_start);
+ len = strlen(*base) + strlen(buf) + 1;
+ str = xmalloc(len);
+ sprintf(str, "%s%s", *base, buf);
+ *base = str;
+}
+
+/* New file based kexec system call related code */
+static int do_kexec_file_load(int fileind, int argc, char **argv,
+ unsigned long flags) {
+
+ char *kernel;
+ int kernel_fd, i;
+ struct kexec_info info;
+ int ret = 0;
+ char *kernel_buf;
+ off_t kernel_size;
+
+ memset(&info, 0, sizeof(info));
+ info.segment = NULL;
+ info.nr_segments = 0;
+ info.entry = NULL;
+ info.backup_start = 0;
+ info.kexec_flags = flags;
+
+ info.file_mode = 1;
+ info.kernel_fd = -1;
+ info.initrd_fd = -1;
+
+ if (!is_kexec_file_load_implemented())
+ return EFALLBACK;
+
+ if (argc - fileind <= 0) {
+ fprintf(stderr, "No kernel specified\n");
+ usage();
+ return EFAILED;
+ }
+
+ kernel = argv[fileind];
+
+ /* slurp in the input kernel */
+ kernel_buf = slurp_decompress_file(kernel, &kernel_size);
+ if (!kernel_buf) {
+ fprintf(stderr, "Failed to decompress file %s:%s\n", kernel,
+ strerror(errno));
+ return EFAILED;
+ }
+ kernel_fd = copybuf_memfd(kernel_buf, kernel_size);
+ if (kernel_fd < 0) {
+ fprintf(stderr, "Failed to copy decompressed buf\n");
+ return EFAILED;
+ }
+
+ for (i = 0; i < file_types; i++) {
+ if (file_type[i].probe(kernel_buf, kernel_size) >= 0)
+ break;
+ }
+
+ if (i == file_types) {
+ fprintf(stderr, "Cannot determine the file type " "of %s\n",
+ kernel);
+ close(kernel_fd);
+ return EFAILED;
+ }
+
+ ret = file_type[i].load(argc, argv, kernel_buf, kernel_size, &info);
+ if (ret < 0) {
+ fprintf(stderr, "Cannot load %s\n", kernel);
+ close(kernel_fd);
+ return ret;
+ }
+
+ /*
+ * image type specific load functioin detect the capsule kernel type
+ * and create another fd for file load. For example the zboot kernel.
+ */
+ if (info.kernel_fd != -1)
+ kernel_fd = info.kernel_fd;
+
+ /*
+ * If there is no initramfs, set KEXEC_FILE_NO_INITRAMFS flag so that
+ * kernel does not return error with negative initrd_fd.
+ */
+ if (info.initrd_fd == -1)
+ info.kexec_flags |= KEXEC_FILE_NO_INITRAMFS;
+
+ ret = kexec_file_load(kernel_fd, info.initrd_fd, info.command_line_len,
+ info.command_line, info.kexec_flags);
+ if (ret != 0) {
+ switch (errno) {
+ /*
+ * Something failed with signature verification.
+ * Reject the image.
+ */
+ case ELIBBAD:
+ case EKEYREJECTED:
+ case ENOPKG:
+ case ENOKEY:
+ case EBADMSG:
+ case EMSGSIZE:
+ /* Reject by default. */
+ default:
+ fprintf(stderr, "kexec_file_load failed: %s\n", strerror(errno));
+ ret = EFAILED;
+ break;
+
+ /* Not implemented. */
+ case ENOSYS:
+ /*
+ * Parsing image or other options failed
+ * The image may be invalid or image
+ * type may not supported by kernel so
+ * retry parsing in kexec-tools.
+ */
+ case EINVAL:
+ case ENOEXEC:
+ /*
+ * ENOTSUP can be unsupported image
+ * type or unsupported PE signature
+ * wrapper type, duh.
+ */
+ case ENOTSUP:
+ ret = EFALLBACK;
+ break;
+ }
+ }
+
+ close(kernel_fd);
+ return ret;
+}
+
+static void print_crashkernel_region_size(void)
+{
+ uint64_t start = 0, end = 0;
+
+ if (is_crashkernel_mem_reserved() &&
+ get_crash_kernel_load_range(&start, &end)) {
+ fprintf(stderr, "get_crash_kernel_load_range() failed.\n");
+ return;
+ }
+
+ printf("%" PRIu64 "\n", (start != end) ? (end - start + 1) : 0UL);
+}
+
+int main(int argc, char *argv[])
+{
+ int has_opt_load = 0;
+ int do_load = 1;
+ int do_exec = 0;
+ int do_load_jump_back_helper = 0;
+ int do_shutdown = 1;
+ int do_sync = 1, skip_sync = 0;
+ int do_ifdown = 0, skip_ifdown = 0;
+ int do_unload = 0;
+ int do_reuse_initrd = 0;
+ int do_kexec_file_syscall = 1;
+ int do_kexec_fallback = 1;
+ int skip_checks = 0;
+ int do_status = 0;
+ void *entry = 0;
+ char *type = 0;
+ char *endptr;
+ int opt;
+ int result = 0;
+ int fileind;
+ static const struct option options[] = {
+ KEXEC_ALL_OPTIONS
+ { 0, 0, 0, 0},
+ };
+ static const char short_options[] = KEXEC_ALL_OPT_STR;
+
+ /* Reset getopt for the next pass. */
+ opterr = 1;
+ optind = 1;
+
+ while ((opt = getopt_long(argc, argv, short_options,
+ options, 0)) != -1) {
+ switch(opt) {
+ case '?':
+ usage();
+ return 1;
+ case OPT_HELP:
+ usage();
+ return 0;
+ case OPT_VERSION:
+ version();
+ return 0;
+ case OPT_DEBUG:
+ kexec_debug = 1;
+ break;
+ case OPT_NOIFDOWN:
+ skip_ifdown = 1;
+ break;
+ case OPT_NOSYNC:
+ skip_sync = 1;
+ break;
+ case OPT_FORCE:
+ do_load = 1;
+ do_shutdown = 0;
+ do_sync = 1;
+ do_ifdown = 1;
+ do_exec = 1;
+ break;
+ case OPT_LOAD:
+ has_opt_load = 1;
+ do_load = 1;
+ do_exec = 0;
+ do_shutdown = 0;
+ break;
+ case OPT_UNLOAD:
+ do_load = 0;
+ do_shutdown = 0;
+ do_sync = 0;
+ do_unload = 1;
+ kexec_file_flags |= KEXEC_FILE_UNLOAD;
+ break;
+ case OPT_EXEC_LIVE_UPDATE:
+ if ( !xen_present() ) {
+ fprintf(stderr, "--exec-live-update only works under xen.\n");
+ return 1;
+ }
+ kexec_flags |= KEXEC_LIVE_UPDATE;
+ /* fallthrough */
+ case OPT_EXEC:
+ do_load = 0;
+ do_shutdown = 0;
+ do_sync = 1;
+ do_ifdown = 1;
+ do_exec = 1;
+ break;
+ case OPT_LOAD_JUMP_BACK_HELPER:
+ do_load = 0;
+ do_shutdown = 0;
+ do_sync = 1;
+ do_ifdown = 1;
+ do_exec = 0;
+ do_load_jump_back_helper = 1;
+ kexec_flags = KEXEC_PRESERVE_CONTEXT;
+ break;
+ case OPT_ENTRY:
+ entry = (void *)strtoul(optarg, &endptr, 0);
+ if (*endptr) {
+ fprintf(stderr,
+ "Bad option value in --entry=%s\n",
+ optarg);
+ usage();
+ return 1;
+ }
+ break;
+ case OPT_LOAD_PRESERVE_CONTEXT:
+ case OPT_LOAD_LIVE_UPDATE:
+ do_load = 1;
+ do_exec = 0;
+ do_shutdown = 0;
+ do_sync = 1;
+ kexec_flags = (opt == OPT_LOAD_PRESERVE_CONTEXT) ?
+ KEXEC_PRESERVE_CONTEXT : KEXEC_LIVE_UPDATE;
+ break;
+ case OPT_TYPE:
+ type = optarg;
+ break;
+ case OPT_PANIC:
+ do_load = 1;
+ do_exec = 0;
+ do_shutdown = 0;
+ do_sync = 0;
+ kexec_file_flags |= KEXEC_FILE_ON_CRASH;
+ kexec_flags = KEXEC_ON_CRASH;
+ break;
+ case OPT_MEM_MIN:
+ mem_min = strtoul(optarg, &endptr, 0);
+ if (*endptr) {
+ fprintf(stderr,
+ "Bad option value in --mem-min=%s\n",
+ optarg);
+ usage();
+ return 1;
+ }
+ break;
+ case OPT_MEM_MAX:
+ mem_max = strtoul(optarg, &endptr, 0);
+ if (*endptr) {
+ fprintf(stderr,
+ "Bad option value in --mem-max=%s\n",
+ optarg);
+ usage();
+ return 1;
+ }
+ break;
+ case OPT_REUSE_INITRD:
+ do_reuse_initrd = 1;
+ break;
+ case OPT_KEXEC_FILE_SYSCALL:
+ do_kexec_file_syscall = 1;
+ do_kexec_fallback = 0;
+ break;
+ case OPT_KEXEC_SYSCALL:
+ do_kexec_file_syscall = 0;
+ do_kexec_fallback = 0;
+ break;
+ case OPT_KEXEC_SYSCALL_AUTO:
+ do_kexec_file_syscall = 1;
+ do_kexec_fallback = 1;
+ break;
+ case OPT_NOCHECKS:
+ skip_checks = 1;
+ break;
+ case OPT_STATUS:
+ do_status = 1;
+ break;
+ case OPT_PRINT_CKR_SIZE:
+ print_crashkernel_region_size();
+ return 0;
+ default:
+ break;
+ }
+ }
+
+ if (skip_ifdown)
+ do_ifdown = 0;
+ if (skip_sync)
+ do_sync = 0;
+
+ if (do_status) {
+ if (kexec_flags == 0 && !has_opt_load)
+ kexec_flags = KEXEC_ON_CRASH;
+ do_load = 0;
+ do_reuse_initrd = 0;
+ do_unload = 0;
+ do_load = 0;
+ do_shutdown = 0;
+ do_sync = 0;
+ do_ifdown = 0;
+ do_exec = 0;
+ do_load_jump_back_helper = 0;
+ }
+
+ if (do_load &&
+ ((kexec_flags & KEXEC_ON_CRASH) ||
+ (kexec_file_flags & KEXEC_FILE_ON_CRASH)) &&
+ !is_crashkernel_mem_reserved()) {
+ die("Memory for crashkernel is not reserved\n"
+ "Please reserve memory by passing"
+ "\"crashkernel=Y@X\" parameter to kernel\n"
+ "Then try to loading kdump kernel\n");
+ }
+
+ if (do_load && (kexec_flags & KEXEC_PRESERVE_CONTEXT) &&
+ mem_max == ULONG_MAX) {
+ die("Please specify memory range used by kexeced kernel\n"
+ "to preserve the context of original kernel with \n"
+ "\"--mem-max\" parameter\n");
+ }
+
+ if (do_load && (kexec_flags & KEXEC_LIVE_UPDATE) &&
+ !xen_present()) {
+ die("--load-live-update can only be used with xen\n");
+ }
+
+ fileind = optind;
+ /* Reset getopt for the next pass; called in other source modules */
+ opterr = 1;
+ optind = 1;
+
+ result = arch_process_options(argc, argv);
+
+ /* Check for bogus options */
+ if (!do_load) {
+ while((opt = getopt_long(argc, argv, short_options,
+ options, 0)) != -1) {
+ if ((opt == '?') || (opt >= OPT_ARCH_MAX)) {
+ usage();
+ return 1;
+ }
+ }
+ }
+ if (do_kexec_file_syscall) {
+ if (do_load_jump_back_helper && !do_kexec_fallback)
+ die("--load-jump-back-helper not supported with kexec_file_load\n");
+ if (kexec_flags & KEXEC_PRESERVE_CONTEXT)
+ die("--load-preserve-context not supported with kexec_file_load\n");
+ }
+
+ if (do_reuse_initrd){
+ check_reuse_initrd();
+ arch_reuse_initrd();
+ }
+ if (do_status) {
+ result = k_status(kexec_flags);
+ }
+ if (do_unload) {
+ if (do_kexec_file_syscall) {
+ result = kexec_file_unload(kexec_file_flags);
+ if (result == EFALLBACK && do_kexec_fallback) {
+ /* Reset getopt for fallback */
+ opterr = 1;
+ optind = 1;
+ do_kexec_file_syscall = 0;
+ }
+ }
+ if (!do_kexec_file_syscall)
+ result = k_unload(kexec_flags);
+ }
+ if (do_load && (result == 0)) {
+ if (do_kexec_file_syscall) {
+ result = do_kexec_file_load(fileind, argc, argv,
+ kexec_file_flags);
+ if (result == EFALLBACK && do_kexec_fallback) {
+ /* Reset getopt for fallback */
+ opterr = 1;
+ optind = 1;
+ do_kexec_file_syscall = 0;
+ }
+ }
+ if (!do_kexec_file_syscall)
+ result = my_load(type, fileind, argc, argv,
+ kexec_flags, skip_checks, entry);
+ }
+ /* Don't shutdown unless there is something to reboot to! */
+ if ((result == 0) && (do_shutdown || do_exec) && !kexec_loaded(KEXEC_LOADED_PATH)) {
+ die("Nothing has been loaded!\n");
+ }
+ if ((result == 0) && do_shutdown) {
+ result = my_shutdown();
+ }
+ if ((result == 0) && do_sync) {
+ sync();
+ }
+ if ((result == 0) && do_ifdown) {
+ ifdown();
+ }
+ if ((result == 0) && do_exec) {
+ result = my_exec();
+ }
+ if ((result == 0) && do_load_jump_back_helper) {
+ result = my_load_jump_back_helper(kexec_flags, entry);
+ }
+ if (result == EFALLBACK)
+ fputs("syscall kexec_file_load not available.\n", stderr);
+
+ fflush(stdout);
+ fflush(stderr);
+ return result;
+}
diff --git a/kexec/kexec.h b/kexec/kexec.h
new file mode 100644
index 0000000..ed3b499
--- /dev/null
+++ b/kexec/kexec.h
@@ -0,0 +1,350 @@
+#ifndef KEXEC_H
+#define KEXEC_H
+
+#include "config.h"
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#define USE_BSD
+#include <byteswap.h>
+#include <endian.h>
+#define _GNU_SOURCE
+
+#include "kexec-elf.h"
+#include "unused.h"
+
+#ifndef BYTE_ORDER
+#error BYTE_ORDER not defined
+#endif
+
+#ifndef LITTLE_ENDIAN
+#error LITTLE_ENDIAN not defined
+#endif
+
+#ifndef BIG_ENDIAN
+#error BIG_ENDIAN not defined
+#endif
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+#define cpu_to_le16(val) (val)
+#define cpu_to_le32(val) (val)
+#define cpu_to_le64(val) (val)
+#define cpu_to_be16(val) bswap_16(val)
+#define cpu_to_be32(val) bswap_32(val)
+#define cpu_to_be64(val) bswap_64(val)
+#define le16_to_cpu(val) (val)
+#define le32_to_cpu(val) (val)
+#define le64_to_cpu(val) (val)
+#define be16_to_cpu(val) bswap_16(val)
+#define be32_to_cpu(val) bswap_32(val)
+#define be64_to_cpu(val) bswap_64(val)
+#elif BYTE_ORDER == BIG_ENDIAN
+#define cpu_to_le16(val) bswap_16(val)
+#define cpu_to_le32(val) bswap_32(val)
+#define cpu_to_le64(val) bswap_64(val)
+#define cpu_to_be16(val) (val)
+#define cpu_to_be32(val) (val)
+#define cpu_to_be64(val) (val)
+#define le16_to_cpu(val) bswap_16(val)
+#define le32_to_cpu(val) bswap_32(val)
+#define le64_to_cpu(val) bswap_64(val)
+#define be16_to_cpu(val) (val)
+#define be32_to_cpu(val) (val)
+#define be64_to_cpu(val) (val)
+#else
+#error unknwon BYTE_ORDER
+#endif
+
+/*
+ * Document some of the reasons why crashdump may fail, so we can give
+ * better error messages
+ */
+#define EFAILED -1 /* default error code */
+#define ENOCRASHKERNEL -2 /* no memory reserved for crashkernel */
+#define EFALLBACK -3 /* fallback to kexec_load(2) may work */
+
+/*
+ * This function doesn't actually exist. The idea is that when someone
+ * uses the macros below with an unsupported size (datatype), the linker
+ * will alert us to the problem via an unresolved reference error.
+ */
+extern unsigned long bad_unaligned_access_length (void);
+
+#define get_unaligned(loc) \
+({ \
+ __typeof__(*(loc)) _v; \
+ size_t size = sizeof(*(loc)); \
+ switch(size) { \
+ case 1: case 2: case 4: case 8: \
+ memcpy(&_v, (loc), size); \
+ break; \
+ default: \
+ _v = bad_unaligned_access_length(); \
+ break; \
+ } \
+ _v; \
+})
+
+#define put_unaligned(value, loc) \
+do { \
+ size_t size = sizeof(*(loc)); \
+ __typeof__(*(loc)) _v = value; \
+ switch(size) { \
+ case 1: case 2: case 4: case 8: \
+ memcpy((loc), &_v, size); \
+ break; \
+ default: \
+ bad_unaligned_access_length(); \
+ break; \
+ } \
+} while(0)
+
+#define _ALIGN_UP_MASK(addr, mask) (((addr) + (mask)) & ~(mask))
+#define _ALIGN_DOWN_MASK(addr, mask) ((addr) & ~(mask))
+
+/* align addr on a size boundary - adjust address up/down if needed */
+#define _ALIGN_UP(addr, size) \
+ _ALIGN_UP_MASK(addr, (typeof(addr))(size) - 1)
+#define _ALIGN_DOWN(addr, size) \
+ _ALIGN_DOWN_MASK(addr, (typeof(addr))(size) - 1)
+
+/* align addr on a size boundary - adjust address up if needed */
+#define _ALIGN(addr, size) _ALIGN_UP(addr, size)
+
+extern unsigned long long mem_min, mem_max;
+extern int kexec_debug;
+
+#define dbgprintf(...) \
+do { \
+ if (kexec_debug) \
+ fprintf(stderr, __VA_ARGS__); \
+} while(0)
+
+struct kexec_segment {
+ const void *buf;
+ size_t bufsz;
+ const void *mem;
+ size_t memsz;
+};
+
+struct memory_range {
+ unsigned long long start, end;
+ unsigned type;
+#define RANGE_RAM 0
+#define RANGE_RESERVED 1
+#define RANGE_ACPI 2
+#define RANGE_ACPI_NVS 3
+#define RANGE_UNCACHED 4
+#define RANGE_PMEM 6
+#define RANGE_PRAM 11
+};
+
+struct memory_ranges {
+ unsigned int size;
+ unsigned int max_size;
+ struct memory_range *ranges;
+};
+
+struct kexec_info {
+ struct kexec_segment *segment;
+ int nr_segments;
+ struct memory_range *memory_range;
+ int memory_ranges;
+ struct memory_range *crash_range;
+ int nr_crash_ranges;
+ void *entry;
+ struct mem_ehdr rhdr;
+ unsigned long backup_start;
+ unsigned long kexec_flags;
+ unsigned long backup_src_start;
+ unsigned long backup_src_size;
+ /* Set to 1 if we are using kexec file syscall */
+ unsigned long file_mode :1;
+
+ /* Filled by kernel image processing code */
+ int kernel_fd;
+ int initrd_fd;
+ char *command_line;
+ int command_line_len;
+
+ int skip_checks;
+};
+
+struct arch_map_entry {
+ const char *machine;
+ unsigned long arch;
+};
+
+extern const struct arch_map_entry arches[];
+long physical_arch(void);
+
+void usage(void);
+int get_memory_ranges(struct memory_range **range, int *ranges,
+ unsigned long kexec_flags);
+int valid_memory_range(struct kexec_info *info,
+ unsigned long sstart, unsigned long send);
+void print_segments(FILE *file, struct kexec_info *info);
+int sort_segments(struct kexec_info *info);
+unsigned long locate_hole(struct kexec_info *info,
+ unsigned long hole_size, unsigned long hole_align,
+ unsigned long hole_min, unsigned long hole_max,
+ int hole_end);
+
+typedef int (probe_t)(const char *kernel_buf, off_t kernel_size);
+typedef int (load_t )(int argc, char **argv,
+ const char *kernel_buf, off_t kernel_size,
+ struct kexec_info *info);
+typedef void (usage_t)(void);
+struct file_type {
+ const char *name;
+ probe_t *probe;
+ load_t *load;
+ usage_t *usage;
+};
+
+extern struct file_type file_type[];
+extern int file_types;
+
+#define OPT_HELP 'h'
+#define OPT_VERSION 'v'
+#define OPT_DEBUG 'd'
+#define OPT_FORCE 'f'
+#define OPT_NOCHECKS 'i'
+#define OPT_NOIFDOWN 'x'
+#define OPT_NOSYNC 'y'
+#define OPT_EXEC 'e'
+#define OPT_LOAD 'l'
+#define OPT_UNLOAD 'u'
+#define OPT_TYPE 't'
+#define OPT_PANIC 'p'
+#define OPT_KEXEC_FILE_SYSCALL 's'
+#define OPT_KEXEC_SYSCALL 'c'
+#define OPT_KEXEC_SYSCALL_AUTO 'a'
+#define OPT_STATUS 'S'
+#define OPT_MEM_MIN 256
+#define OPT_MEM_MAX 257
+#define OPT_REUSE_INITRD 258
+#define OPT_LOAD_PRESERVE_CONTEXT 259
+#define OPT_LOAD_JUMP_BACK_HELPER 260
+#define OPT_ENTRY 261
+#define OPT_PRINT_CKR_SIZE 262
+#define OPT_LOAD_LIVE_UPDATE 263
+#define OPT_EXEC_LIVE_UPDATE 264
+#define OPT_MAX 265
+#define KEXEC_OPTIONS \
+ { "help", 0, 0, OPT_HELP }, \
+ { "version", 0, 0, OPT_VERSION }, \
+ { "force", 0, 0, OPT_FORCE }, \
+ { "no-checks", 0, 0, OPT_NOCHECKS }, \
+ { "no-ifdown", 0, 0, OPT_NOIFDOWN }, \
+ { "no-sync", 0, 0, OPT_NOSYNC }, \
+ { "load", 0, 0, OPT_LOAD }, \
+ { "unload", 0, 0, OPT_UNLOAD }, \
+ { "exec", 0, 0, OPT_EXEC }, \
+ { "exec-live-update", 0, 0, OPT_EXEC_LIVE_UPDATE}, \
+ { "load-preserve-context", 0, 0, OPT_LOAD_PRESERVE_CONTEXT}, \
+ { "load-jump-back-helper", 0, 0, OPT_LOAD_JUMP_BACK_HELPER }, \
+ { "load-live-update", 0, 0, OPT_LOAD_LIVE_UPDATE }, \
+ { "entry", 1, 0, OPT_ENTRY }, \
+ { "type", 1, 0, OPT_TYPE }, \
+ { "load-panic", 0, 0, OPT_PANIC }, \
+ { "mem-min", 1, 0, OPT_MEM_MIN }, \
+ { "mem-max", 1, 0, OPT_MEM_MAX }, \
+ { "reuseinitrd", 0, 0, OPT_REUSE_INITRD }, \
+ { "kexec-file-syscall", 0, 0, OPT_KEXEC_FILE_SYSCALL }, \
+ { "kexec-syscall", 0, 0, OPT_KEXEC_SYSCALL }, \
+ { "kexec-syscall-auto", 0, 0, OPT_KEXEC_SYSCALL_AUTO }, \
+ { "debug", 0, 0, OPT_DEBUG }, \
+ { "status", 0, 0, OPT_STATUS }, \
+ { "print-ckr-size", 0, 0, OPT_PRINT_CKR_SIZE }, \
+
+#define KEXEC_OPT_STR "h?vdfixyluet:pscaS"
+
+extern void dbgprint_mem_range(const char *prefix, struct memory_range *mr, int nr_mr);
+extern void die(const char *fmt, ...)
+ __attribute__ ((format (printf, 1, 2)));
+extern void *xmalloc(size_t size);
+extern void *xrealloc(void *ptr, size_t size);
+extern char *slurp_file(const char *filename, off_t *r_size);
+extern char *slurp_file_mmap(const char *filename, off_t *r_size);
+extern char *slurp_file_len(const char *filename, off_t size, off_t *nread);
+extern char *slurp_decompress_file(const char *filename, off_t *r_size);
+extern unsigned long virt_to_phys(unsigned long addr);
+extern void add_segment(struct kexec_info *info,
+ const void *buf, size_t bufsz, unsigned long base, size_t memsz);
+extern void add_segment_phys_virt(struct kexec_info *info,
+ const void *buf, size_t bufsz, unsigned long base, size_t memsz,
+ int phys);
+extern unsigned long add_buffer(struct kexec_info *info,
+ const void *buf, unsigned long bufsz, unsigned long memsz,
+ unsigned long buf_align, unsigned long buf_min, unsigned long buf_max,
+ int buf_end);
+extern unsigned long add_buffer_virt(struct kexec_info *info,
+ const void *buf, unsigned long bufsz, unsigned long memsz,
+ unsigned long buf_align, unsigned long buf_min, unsigned long buf_max,
+ int buf_end);
+extern unsigned long add_buffer_phys_virt(struct kexec_info *info,
+ const void *buf, unsigned long bufsz, unsigned long memsz,
+ unsigned long buf_align, unsigned long buf_min, unsigned long buf_max,
+ int buf_end, int phys);
+extern void arch_reuse_initrd(void);
+
+extern int ifdown(void);
+
+extern char purgatory[];
+extern size_t purgatory_size;
+
+#define BOOTLOADER "kexec"
+#define BOOTLOADER_VERSION PACKAGE_VERSION
+
+void arch_usage(void);
+int arch_process_options(int argc, char **argv);
+int arch_compat_trampoline(struct kexec_info *info);
+void arch_update_purgatory(struct kexec_info *info);
+int is_crashkernel_mem_reserved(void);
+int get_crash_kernel_load_range(uint64_t *start, uint64_t *end);
+void remove_parameter(char *line, const char *param_name);
+char *get_command_line(void);
+
+int kexec_iomem_for_each_line(char *match,
+ int (*callback)(void *data,
+ int nr,
+ char *str,
+ unsigned long long base,
+ unsigned long long length),
+ void *data);
+int parse_iomem_single(char *str, uint64_t *start, uint64_t *end);
+const char * proc_iomem(void);
+
+#define MAX_LINE 160
+
+char *concat_cmdline(const char *base, const char *append);
+void cmdline_add_liveupdate(char **base);
+
+int xen_present(void);
+int xen_kexec_load(struct kexec_info *info);
+int xen_kexec_unload(uint64_t kexec_flags);
+int xen_kexec_exec(uint64_t kexec_flags);
+int xen_kexec_status(uint64_t kexec_flags);
+
+extern unsigned long long get_kernel_sym(const char *text);
+
+/* Converts unsigned long to ascii string. */
+static inline void ultoa(unsigned long val, char *str)
+{
+ char buf[36];
+ int len = 0, pos = 0;
+
+ do {
+ buf[len++] = val % 10;
+ val /= 10;
+ } while (val);
+
+ while (len)
+ str[pos++] = buf[--len] + '0';
+ str[pos] = 0;
+}
+
+#endif /* KEXEC_H */
diff --git a/kexec/libfdt/Makefile.libfdt b/kexec/libfdt/Makefile.libfdt
new file mode 100644
index 0000000..9a2b4f7
--- /dev/null
+++ b/kexec/libfdt/Makefile.libfdt
@@ -0,0 +1,13 @@
+# Makefile.libfdt
+#
+# This is not a complete Makefile of itself. Instead, it is designed to
+# be easily embeddable into other systems of Makefiles.
+#
+LIBFDT_INCLUDES = fdt.h libfdt.h
+LIBFDT_SRCS = fdt.c fdt_ro.c fdt_wip.c fdt_sw.c fdt_rw.c fdt_strerror.c
+LIBFDT_OBJS = $(LIBFDT_SRCS:%.c=%.o)
+
+dist += kexec/libfdt/Makefile.libfdt \
+ kexec/libfdt/fdt.h kexec/libfdt/libfdt.h \
+ kexec/libfdt/libfdt_env.h \
+ kexec/libfdt/libfdt_internal.h
diff --git a/kexec/libfdt/fdt.c b/kexec/libfdt/fdt.c
new file mode 100644
index 0000000..2acaec5
--- /dev/null
+++ b/kexec/libfdt/fdt.c
@@ -0,0 +1,201 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+int fdt_check_header(const void *fdt)
+{
+ if (fdt_magic(fdt) == FDT_MAGIC) {
+ /* Complete tree */
+ if (fdt_version(fdt) < FDT_FIRST_SUPPORTED_VERSION)
+ return -FDT_ERR_BADVERSION;
+ if (fdt_last_comp_version(fdt) > FDT_LAST_SUPPORTED_VERSION)
+ return -FDT_ERR_BADVERSION;
+ } else if (fdt_magic(fdt) == FDT_SW_MAGIC) {
+ /* Unfinished sequential-write blob */
+ if (fdt_size_dt_struct(fdt) == 0)
+ return -FDT_ERR_BADSTATE;
+ } else {
+ return -FDT_ERR_BADMAGIC;
+ }
+
+ return 0;
+}
+
+const void *fdt_offset_ptr(const void *fdt, int offset, int len)
+{
+ const char *p;
+
+ if (fdt_version(fdt) >= 0x11)
+ if (((offset + len) < offset)
+ || ((offset + len) > fdt_size_dt_struct(fdt)))
+ return NULL;
+
+ p = _fdt_offset_ptr(fdt, offset);
+
+ if (p + len < p)
+ return NULL;
+ return p;
+}
+
+uint32_t fdt_next_tag(const void *fdt, int offset, int *nextoffset)
+{
+ const uint32_t *tagp, *lenp;
+ uint32_t tag;
+ const char *p;
+
+ if (offset % FDT_TAGSIZE)
+ return -1;
+
+ tagp = fdt_offset_ptr(fdt, offset, FDT_TAGSIZE);
+ if (! tagp)
+ return FDT_END; /* premature end */
+ tag = fdt32_to_cpu(*tagp);
+ offset += FDT_TAGSIZE;
+
+ switch (tag) {
+ case FDT_BEGIN_NODE:
+ /* skip name */
+ do {
+ p = fdt_offset_ptr(fdt, offset++, 1);
+ } while (p && (*p != '\0'));
+ if (! p)
+ return FDT_END;
+ break;
+ case FDT_PROP:
+ lenp = fdt_offset_ptr(fdt, offset, sizeof(*lenp));
+ if (! lenp)
+ return FDT_END;
+ /* skip name offset, length and value */
+ offset += 2*FDT_TAGSIZE + fdt32_to_cpu(*lenp);
+ break;
+ }
+
+ if (nextoffset)
+ *nextoffset = FDT_TAGALIGN(offset);
+
+ return tag;
+}
+
+int _fdt_check_node_offset(const void *fdt, int offset)
+{
+ if ((offset < 0) || (offset % FDT_TAGSIZE)
+ || (fdt_next_tag(fdt, offset, &offset) != FDT_BEGIN_NODE))
+ return -FDT_ERR_BADOFFSET;
+
+ return offset;
+}
+
+int fdt_next_node(const void *fdt, int offset, int *depth)
+{
+ int nextoffset = 0;
+ uint32_t tag;
+
+ if (offset >= 0)
+ if ((nextoffset = _fdt_check_node_offset(fdt, offset)) < 0)
+ return nextoffset;
+
+ do {
+ offset = nextoffset;
+ tag = fdt_next_tag(fdt, offset, &nextoffset);
+
+ switch (tag) {
+ case FDT_PROP:
+ case FDT_NOP:
+ break;
+
+ case FDT_BEGIN_NODE:
+ if (depth)
+ (*depth)++;
+ break;
+
+ case FDT_END_NODE:
+ if (depth)
+ (*depth)--;
+ break;
+
+ case FDT_END:
+ return -FDT_ERR_NOTFOUND;
+
+ default:
+ return -FDT_ERR_BADSTRUCTURE;
+ }
+ } while (tag != FDT_BEGIN_NODE);
+
+ return offset;
+}
+
+const char *_fdt_find_string(const char *strtab, int tabsize, const char *s)
+{
+ int len = strlen(s) + 1;
+ const char *last = strtab + tabsize - len;
+ const char *p;
+
+ for (p = strtab; p <= last; p++)
+ if (memcmp(p, s, len) == 0)
+ return p;
+ return NULL;
+}
+
+int fdt_move(const void *fdt, void *buf, int bufsize)
+{
+ FDT_CHECK_HEADER(fdt);
+
+ if (fdt_totalsize(fdt) > bufsize)
+ return -FDT_ERR_NOSPACE;
+
+ memmove(buf, fdt, fdt_totalsize(fdt));
+ return 0;
+}
diff --git a/kexec/libfdt/fdt.h b/kexec/libfdt/fdt.h
new file mode 100644
index 0000000..48ccfd9
--- /dev/null
+++ b/kexec/libfdt/fdt.h
@@ -0,0 +1,60 @@
+#ifndef _FDT_H
+#define _FDT_H
+
+#ifndef __ASSEMBLY__
+
+struct fdt_header {
+ uint32_t magic; /* magic word FDT_MAGIC */
+ uint32_t totalsize; /* total size of DT block */
+ uint32_t off_dt_struct; /* offset to structure */
+ uint32_t off_dt_strings; /* offset to strings */
+ uint32_t off_mem_rsvmap; /* offset to memory reserve map */
+ uint32_t version; /* format version */
+ uint32_t last_comp_version; /* last compatible version */
+
+ /* version 2 fields below */
+ uint32_t boot_cpuid_phys; /* Which physical CPU id we're
+ booting on */
+ /* version 3 fields below */
+ uint32_t size_dt_strings; /* size of the strings block */
+
+ /* version 17 fields below */
+ uint32_t size_dt_struct; /* size of the structure block */
+};
+
+struct fdt_reserve_entry {
+ uint64_t address;
+ uint64_t size;
+};
+
+struct fdt_node_header {
+ uint32_t tag;
+ char name[0];
+};
+
+struct fdt_property {
+ uint32_t tag;
+ uint32_t len;
+ uint32_t nameoff;
+ char data[0];
+};
+
+#endif /* !__ASSEMBLY */
+
+#define FDT_MAGIC 0xd00dfeed /* 4: version, 4: total size */
+#define FDT_TAGSIZE sizeof(uint32_t)
+
+#define FDT_BEGIN_NODE 0x1 /* Start node: full name */
+#define FDT_END_NODE 0x2 /* End node */
+#define FDT_PROP 0x3 /* Property: name off,
+ size, content */
+#define FDT_NOP 0x4 /* nop */
+#define FDT_END 0x9
+
+#define FDT_V1_SIZE (7*sizeof(uint32_t))
+#define FDT_V2_SIZE (FDT_V1_SIZE + sizeof(uint32_t))
+#define FDT_V3_SIZE (FDT_V2_SIZE + sizeof(uint32_t))
+#define FDT_V16_SIZE FDT_V3_SIZE
+#define FDT_V17_SIZE (FDT_V16_SIZE + sizeof(uint32_t))
+
+#endif /* _FDT_H */
diff --git a/kexec/libfdt/fdt_ro.c b/kexec/libfdt/fdt_ro.c
new file mode 100644
index 0000000..129b532
--- /dev/null
+++ b/kexec/libfdt/fdt_ro.c
@@ -0,0 +1,466 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+static int _fdt_nodename_eq(const void *fdt, int offset,
+ const char *s, int len)
+{
+ const char *p = fdt_offset_ptr(fdt, offset + FDT_TAGSIZE, len+1);
+
+ if (! p)
+ /* short match */
+ return 0;
+
+ if (memcmp(p, s, len) != 0)
+ return 0;
+
+ if (p[len] == '\0')
+ return 1;
+ else if (!memchr(s, '@', len) && (p[len] == '@'))
+ return 1;
+ else
+ return 0;
+}
+
+const char *fdt_string(const void *fdt, int stroffset)
+{
+ return (const char *)fdt + fdt_off_dt_strings(fdt) + stroffset;
+}
+
+int fdt_get_mem_rsv(const void *fdt, int n, uint64_t *address, uint64_t *size)
+{
+ FDT_CHECK_HEADER(fdt);
+ *address = fdt64_to_cpu(_fdt_mem_rsv(fdt, n)->address);
+ *size = fdt64_to_cpu(_fdt_mem_rsv(fdt, n)->size);
+ return 0;
+}
+
+int fdt_num_mem_rsv(const void *fdt)
+{
+ int i = 0;
+
+ while (fdt64_to_cpu(_fdt_mem_rsv(fdt, i)->size) != 0)
+ i++;
+ return i;
+}
+
+int fdt_subnode_offset_namelen(const void *fdt, int offset,
+ const char *name, int namelen)
+{
+ int depth;
+
+ FDT_CHECK_HEADER(fdt);
+
+ for (depth = 0;
+ offset >= 0;
+ offset = fdt_next_node(fdt, offset, &depth)) {
+ if (depth < 0)
+ return -FDT_ERR_NOTFOUND;
+ else if ((depth == 1)
+ && _fdt_nodename_eq(fdt, offset, name, namelen))
+ return offset;
+ }
+
+ return offset; /* error */
+}
+
+int fdt_subnode_offset(const void *fdt, int parentoffset,
+ const char *name)
+{
+ return fdt_subnode_offset_namelen(fdt, parentoffset, name, strlen(name));
+}
+
+int fdt_path_offset(const void *fdt, const char *path)
+{
+ const char *end = path + strlen(path);
+ const char *p = path;
+ int offset = 0;
+
+ FDT_CHECK_HEADER(fdt);
+
+ if (*path != '/')
+ return -FDT_ERR_BADPATH;
+
+ while (*p) {
+ const char *q;
+
+ while (*p == '/')
+ p++;
+ if (! *p)
+ return offset;
+ q = strchr(p, '/');
+ if (! q)
+ q = end;
+
+ offset = fdt_subnode_offset_namelen(fdt, offset, p, q-p);
+ if (offset < 0)
+ return offset;
+
+ p = q;
+ }
+
+ return offset;
+}
+
+const char *fdt_get_name(const void *fdt, int nodeoffset, int *len)
+{
+ const struct fdt_node_header *nh = _fdt_offset_ptr(fdt, nodeoffset);
+ int err;
+
+ if (((err = fdt_check_header(fdt)) != 0)
+ || ((err = _fdt_check_node_offset(fdt, nodeoffset)) < 0))
+ goto fail;
+
+ if (len)
+ *len = strlen(nh->name);
+
+ return nh->name;
+
+ fail:
+ if (len)
+ *len = err;
+ return NULL;
+}
+
+const struct fdt_property *fdt_get_property(const void *fdt,
+ int nodeoffset,
+ const char *name, int *lenp)
+{
+ uint32_t tag;
+ const struct fdt_property *prop;
+ int namestroff;
+ int offset, nextoffset;
+ int err;
+
+ if (((err = fdt_check_header(fdt)) != 0)
+ || ((err = _fdt_check_node_offset(fdt, nodeoffset)) < 0))
+ goto fail;
+
+ nextoffset = err;
+ do {
+ offset = nextoffset;
+
+ tag = fdt_next_tag(fdt, offset, &nextoffset);
+ switch (tag) {
+ case FDT_END:
+ err = -FDT_ERR_TRUNCATED;
+ goto fail;
+
+ case FDT_BEGIN_NODE:
+ case FDT_END_NODE:
+ case FDT_NOP:
+ break;
+
+ case FDT_PROP:
+ err = -FDT_ERR_BADSTRUCTURE;
+ prop = fdt_offset_ptr(fdt, offset, sizeof(*prop));
+ if (! prop)
+ goto fail;
+ namestroff = fdt32_to_cpu(prop->nameoff);
+ if (strcmp(fdt_string(fdt, namestroff), name) == 0) {
+ /* Found it! */
+ int len = fdt32_to_cpu(prop->len);
+ prop = fdt_offset_ptr(fdt, offset,
+ sizeof(*prop)+len);
+ if (! prop)
+ goto fail;
+
+ if (lenp)
+ *lenp = len;
+
+ return prop;
+ }
+ break;
+
+ default:
+ err = -FDT_ERR_BADSTRUCTURE;
+ goto fail;
+ }
+ } while ((tag != FDT_BEGIN_NODE) && (tag != FDT_END_NODE));
+
+ err = -FDT_ERR_NOTFOUND;
+ fail:
+ if (lenp)
+ *lenp = err;
+ return NULL;
+}
+
+const void *fdt_getprop(const void *fdt, int nodeoffset,
+ const char *name, int *lenp)
+{
+ const struct fdt_property *prop;
+
+ prop = fdt_get_property(fdt, nodeoffset, name, lenp);
+ if (! prop)
+ return NULL;
+
+ return prop->data;
+}
+
+uint32_t fdt_get_phandle(const void *fdt, int nodeoffset)
+{
+ const uint32_t *php;
+ int len;
+
+ php = fdt_getprop(fdt, nodeoffset, "linux,phandle", &len);
+ if (!php || (len != sizeof(*php)))
+ return 0;
+
+ return fdt32_to_cpu(*php);
+}
+
+int fdt_get_path(const void *fdt, int nodeoffset, char *buf, int buflen)
+{
+ int pdepth = 0, p = 0;
+ int offset, depth, namelen;
+ const char *name;
+
+ FDT_CHECK_HEADER(fdt);
+
+ if (buflen < 2)
+ return -FDT_ERR_NOSPACE;
+
+ for (offset = 0, depth = 0;
+ (offset >= 0) && (offset <= nodeoffset);
+ offset = fdt_next_node(fdt, offset, &depth)) {
+ if (pdepth < depth)
+ continue; /* overflowed buffer */
+
+ while (pdepth > depth) {
+ do {
+ p--;
+ } while (buf[p-1] != '/');
+ pdepth--;
+ }
+
+ name = fdt_get_name(fdt, offset, &namelen);
+ if (!name)
+ return namelen;
+ if ((p + namelen + 1) <= buflen) {
+ memcpy(buf + p, name, namelen);
+ p += namelen;
+ buf[p++] = '/';
+ pdepth++;
+ }
+
+ if (offset == nodeoffset) {
+ if (pdepth < (depth + 1))
+ return -FDT_ERR_NOSPACE;
+
+ if (p > 1) /* special case so that root path is "/", not "" */
+ p--;
+ buf[p] = '\0';
+ return p;
+ }
+ }
+
+ if ((offset == -FDT_ERR_NOTFOUND) || (offset >= 0))
+ return -FDT_ERR_BADOFFSET;
+ else if (offset == -FDT_ERR_BADOFFSET)
+ return -FDT_ERR_BADSTRUCTURE;
+
+ return offset; /* error from fdt_next_node() */
+}
+
+int fdt_supernode_atdepth_offset(const void *fdt, int nodeoffset,
+ int supernodedepth, int *nodedepth)
+{
+ int offset, depth;
+ int supernodeoffset = -FDT_ERR_INTERNAL;
+
+ FDT_CHECK_HEADER(fdt);
+
+ if (supernodedepth < 0)
+ return -FDT_ERR_NOTFOUND;
+
+ for (offset = 0, depth = 0;
+ (offset >= 0) && (offset <= nodeoffset);
+ offset = fdt_next_node(fdt, offset, &depth)) {
+ if (depth == supernodedepth)
+ supernodeoffset = offset;
+
+ if (offset == nodeoffset) {
+ if (nodedepth)
+ *nodedepth = depth;
+
+ if (supernodedepth > depth)
+ return -FDT_ERR_NOTFOUND;
+ else
+ return supernodeoffset;
+ }
+ }
+
+ if ((offset == -FDT_ERR_NOTFOUND) || (offset >= 0))
+ return -FDT_ERR_BADOFFSET;
+ else if (offset == -FDT_ERR_BADOFFSET)
+ return -FDT_ERR_BADSTRUCTURE;
+
+ return offset; /* error from fdt_next_node() */
+}
+
+int fdt_node_depth(const void *fdt, int nodeoffset)
+{
+ int nodedepth;
+ int err;
+
+ err = fdt_supernode_atdepth_offset(fdt, nodeoffset, 0, &nodedepth);
+ if (err)
+ return (err < 0) ? err : -FDT_ERR_INTERNAL;
+ return nodedepth;
+}
+
+int fdt_parent_offset(const void *fdt, int nodeoffset)
+{
+ int nodedepth = fdt_node_depth(fdt, nodeoffset);
+
+ if (nodedepth < 0)
+ return nodedepth;
+ return fdt_supernode_atdepth_offset(fdt, nodeoffset,
+ nodedepth - 1, NULL);
+}
+
+int fdt_node_offset_by_prop_value(const void *fdt, int startoffset,
+ const char *propname,
+ const void *propval, int proplen)
+{
+ int offset;
+ const void *val;
+ int len;
+
+ FDT_CHECK_HEADER(fdt);
+
+ /* FIXME: The algorithm here is pretty horrible: we scan each
+ * property of a node in fdt_getprop(), then if that didn't
+ * find what we want, we scan over them again making our way
+ * to the next node. Still it's the easiest to implement
+ * approach; performance can come later. */
+ for (offset = fdt_next_node(fdt, startoffset, NULL);
+ offset >= 0;
+ offset = fdt_next_node(fdt, offset, NULL)) {
+ val = fdt_getprop(fdt, offset, propname, &len);
+ if (val && (len == proplen)
+ && (memcmp(val, propval, len) == 0))
+ return offset;
+ }
+
+ return offset; /* error from fdt_next_node() */
+}
+
+int fdt_node_offset_by_phandle(const void *fdt, uint32_t phandle)
+{
+ if ((phandle == 0) || (phandle == -1))
+ return -FDT_ERR_BADPHANDLE;
+ phandle = cpu_to_fdt32(phandle);
+ return fdt_node_offset_by_prop_value(fdt, -1, "linux,phandle",
+ &phandle, sizeof(phandle));
+}
+
+int _stringlist_contains(const char *strlist, int listlen, const char *str)
+{
+ int len = strlen(str);
+ const char *p;
+
+ while (listlen >= len) {
+ if (memcmp(str, strlist, len+1) == 0)
+ return 1;
+ p = memchr(strlist, '\0', listlen);
+ if (!p)
+ return 0; /* malformed strlist.. */
+ listlen -= (p-strlist) + 1;
+ strlist = p + 1;
+ }
+ return 0;
+}
+
+int fdt_node_check_compatible(const void *fdt, int nodeoffset,
+ const char *compatible)
+{
+ const void *prop;
+ int len;
+
+ prop = fdt_getprop(fdt, nodeoffset, "compatible", &len);
+ if (!prop)
+ return len;
+ if (_stringlist_contains(prop, len, compatible))
+ return 0;
+ else
+ return 1;
+}
+
+int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
+ const char *compatible)
+{
+ int offset, err;
+
+ FDT_CHECK_HEADER(fdt);
+
+ /* FIXME: The algorithm here is pretty horrible: we scan each
+ * property of a node in fdt_node_check_compatible(), then if
+ * that didn't find what we want, we scan over them again
+ * making our way to the next node. Still it's the easiest to
+ * implement approach; performance can come later. */
+ for (offset = fdt_next_node(fdt, startoffset, NULL);
+ offset >= 0;
+ offset = fdt_next_node(fdt, offset, NULL)) {
+ err = fdt_node_check_compatible(fdt, offset, compatible);
+ if ((err < 0) && (err != -FDT_ERR_NOTFOUND))
+ return err;
+ else if (err == 0)
+ return offset;
+ }
+
+ return offset; /* error from fdt_next_node() */
+}
diff --git a/kexec/libfdt/fdt_rw.c b/kexec/libfdt/fdt_rw.c
new file mode 100644
index 0000000..8e7ec4c
--- /dev/null
+++ b/kexec/libfdt/fdt_rw.c
@@ -0,0 +1,463 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+static int _fdt_blocks_misordered(const void *fdt,
+ int mem_rsv_size, int struct_size)
+{
+ return (fdt_off_mem_rsvmap(fdt) < FDT_ALIGN(sizeof(struct fdt_header), 8))
+ || (fdt_off_dt_struct(fdt) <
+ (fdt_off_mem_rsvmap(fdt) + mem_rsv_size))
+ || (fdt_off_dt_strings(fdt) <
+ (fdt_off_dt_struct(fdt) + struct_size))
+ || (fdt_totalsize(fdt) <
+ (fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt)));
+}
+
+static int _fdt_rw_check_header(void *fdt)
+{
+ FDT_CHECK_HEADER(fdt);
+
+ if (fdt_version(fdt) < 17)
+ return -FDT_ERR_BADVERSION;
+ if (_fdt_blocks_misordered(fdt, sizeof(struct fdt_reserve_entry),
+ fdt_size_dt_struct(fdt)))
+ return -FDT_ERR_BADLAYOUT;
+ if (fdt_version(fdt) > 17)
+ fdt_set_version(fdt, 17);
+
+ return 0;
+}
+
+#define FDT_RW_CHECK_HEADER(fdt) \
+ { \
+ int err; \
+ if ((err = _fdt_rw_check_header(fdt)) != 0) \
+ return err; \
+ }
+
+static inline int _fdt_data_size(void *fdt)
+{
+ return fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
+}
+
+static int _fdt_splice(void *fdt, void *splicepoint, int oldlen, int newlen)
+{
+ char *p = splicepoint;
+ char *end = (char *)fdt + _fdt_data_size(fdt);
+
+ if (((p + oldlen) < p) || ((p + oldlen) > end))
+ return -FDT_ERR_BADOFFSET;
+ if ((end - oldlen + newlen) > ((char *)fdt + fdt_totalsize(fdt)))
+ return -FDT_ERR_NOSPACE;
+ memmove(p + newlen, p + oldlen, end - p - oldlen);
+ return 0;
+}
+
+static int _fdt_splice_mem_rsv(void *fdt, struct fdt_reserve_entry *p,
+ int oldn, int newn)
+{
+ int delta = (newn - oldn) * sizeof(*p);
+ int err;
+ err = _fdt_splice(fdt, p, oldn * sizeof(*p), newn * sizeof(*p));
+ if (err)
+ return err;
+ fdt_set_off_dt_struct(fdt, fdt_off_dt_struct(fdt) + delta);
+ fdt_set_off_dt_strings(fdt, fdt_off_dt_strings(fdt) + delta);
+ return 0;
+}
+
+static int _fdt_splice_struct(void *fdt, void *p,
+ int oldlen, int newlen)
+{
+ int delta = newlen - oldlen;
+ int err;
+
+ if ((err = _fdt_splice(fdt, p, oldlen, newlen)))
+ return err;
+
+ fdt_set_size_dt_struct(fdt, fdt_size_dt_struct(fdt) + delta);
+ fdt_set_off_dt_strings(fdt, fdt_off_dt_strings(fdt) + delta);
+ return 0;
+}
+
+static int _fdt_splice_string(void *fdt, int newlen)
+{
+ void *p = (char *)fdt
+ + fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
+ int err;
+
+ if ((err = _fdt_splice(fdt, p, 0, newlen)))
+ return err;
+
+ fdt_set_size_dt_strings(fdt, fdt_size_dt_strings(fdt) + newlen);
+ return 0;
+}
+
+static int _fdt_find_add_string(void *fdt, const char *s)
+{
+ char *strtab = (char *)fdt + fdt_off_dt_strings(fdt);
+ const char *p;
+ char *new;
+ int len = strlen(s) + 1;
+ int err;
+
+ p = _fdt_find_string(strtab, fdt_size_dt_strings(fdt), s);
+ if (p)
+ /* found it */
+ return (p - strtab);
+
+ new = strtab + fdt_size_dt_strings(fdt);
+ err = _fdt_splice_string(fdt, len);
+ if (err)
+ return err;
+
+ memcpy(new, s, len);
+ return (new - strtab);
+}
+
+int fdt_add_mem_rsv(void *fdt, uint64_t address, uint64_t size)
+{
+ struct fdt_reserve_entry *re;
+ int err;
+
+ FDT_RW_CHECK_HEADER(fdt);
+
+ re = _fdt_mem_rsv_w(fdt, fdt_num_mem_rsv(fdt));
+ err = _fdt_splice_mem_rsv(fdt, re, 0, 1);
+ if (err)
+ return err;
+
+ re->address = cpu_to_fdt64(address);
+ re->size = cpu_to_fdt64(size);
+ return 0;
+}
+
+int fdt_del_mem_rsv(void *fdt, int n)
+{
+ struct fdt_reserve_entry *re = _fdt_mem_rsv_w(fdt, n);
+ int err;
+
+ FDT_RW_CHECK_HEADER(fdt);
+
+ if (n >= fdt_num_mem_rsv(fdt))
+ return -FDT_ERR_NOTFOUND;
+
+ err = _fdt_splice_mem_rsv(fdt, re, 1, 0);
+ if (err)
+ return err;
+ return 0;
+}
+
+static int _fdt_resize_property(void *fdt, int nodeoffset, const char *name,
+ int len, struct fdt_property **prop)
+{
+ int oldlen;
+ int err;
+
+ *prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen);
+ if (! (*prop))
+ return oldlen;
+
+ if ((err = _fdt_splice_struct(fdt, (*prop)->data, FDT_TAGALIGN(oldlen),
+ FDT_TAGALIGN(len))))
+ return err;
+
+ (*prop)->len = cpu_to_fdt32(len);
+ return 0;
+}
+
+static int _fdt_add_property(void *fdt, int nodeoffset, const char *name,
+ int len, struct fdt_property **prop)
+{
+ int proplen;
+ int nextoffset;
+ int namestroff;
+ int err;
+
+ if ((nextoffset = _fdt_check_node_offset(fdt, nodeoffset)) < 0)
+ return nextoffset;
+
+ namestroff = _fdt_find_add_string(fdt, name);
+ if (namestroff < 0)
+ return namestroff;
+
+ *prop = _fdt_offset_ptr_w(fdt, nextoffset);
+ proplen = sizeof(**prop) + FDT_TAGALIGN(len);
+
+ err = _fdt_splice_struct(fdt, *prop, 0, proplen);
+ if (err)
+ return err;
+
+ (*prop)->tag = cpu_to_fdt32(FDT_PROP);
+ (*prop)->nameoff = cpu_to_fdt32(namestroff);
+ (*prop)->len = cpu_to_fdt32(len);
+ return 0;
+}
+
+int fdt_set_name(void *fdt, int nodeoffset, const char *name)
+{
+ char *namep;
+ int oldlen, newlen;
+ int err;
+
+ FDT_RW_CHECK_HEADER(fdt);
+
+ namep = (char *)(uintptr_t)fdt_get_name(fdt, nodeoffset, &oldlen);
+ if (!namep)
+ return oldlen;
+
+ newlen = strlen(name);
+
+ err = _fdt_splice_struct(fdt, namep, FDT_TAGALIGN(oldlen+1),
+ FDT_TAGALIGN(newlen+1));
+ if (err)
+ return err;
+
+ memcpy(namep, name, newlen+1);
+ return 0;
+}
+
+int fdt_setprop(void *fdt, int nodeoffset, const char *name,
+ const void *val, int len)
+{
+ struct fdt_property *prop;
+ int err;
+
+ FDT_RW_CHECK_HEADER(fdt);
+
+ err = _fdt_resize_property(fdt, nodeoffset, name, len, &prop);
+ if (err == -FDT_ERR_NOTFOUND)
+ err = _fdt_add_property(fdt, nodeoffset, name, len, &prop);
+ if (err)
+ return err;
+
+ memcpy(prop->data, val, len);
+ return 0;
+}
+
+int fdt_delprop(void *fdt, int nodeoffset, const char *name)
+{
+ struct fdt_property *prop;
+ int len, proplen;
+
+ FDT_RW_CHECK_HEADER(fdt);
+
+ prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
+ if (! prop)
+ return len;
+
+ proplen = sizeof(*prop) + FDT_TAGALIGN(len);
+ return _fdt_splice_struct(fdt, prop, proplen, 0);
+}
+
+int fdt_add_subnode_namelen(void *fdt, int parentoffset,
+ const char *name, int namelen)
+{
+ struct fdt_node_header *nh;
+ int offset, nextoffset;
+ int nodelen;
+ int err;
+ uint32_t tag;
+ uint32_t *endtag;
+
+ FDT_RW_CHECK_HEADER(fdt);
+
+ offset = fdt_subnode_offset_namelen(fdt, parentoffset, name, namelen);
+ if (offset >= 0)
+ return -FDT_ERR_EXISTS;
+ else if (offset != -FDT_ERR_NOTFOUND)
+ return offset;
+
+ /* Try to place the new node after the parent's properties */
+ fdt_next_tag(fdt, parentoffset, &nextoffset); /* skip the BEGIN_NODE */
+ do {
+ offset = nextoffset;
+ tag = fdt_next_tag(fdt, offset, &nextoffset);
+ } while ((tag == FDT_PROP) || (tag == FDT_NOP));
+
+ nh = _fdt_offset_ptr_w(fdt, offset);
+ nodelen = sizeof(*nh) + FDT_TAGALIGN(namelen+1) + FDT_TAGSIZE;
+
+ err = _fdt_splice_struct(fdt, nh, 0, nodelen);
+ if (err)
+ return err;
+
+ nh->tag = cpu_to_fdt32(FDT_BEGIN_NODE);
+ memset(nh->name, 0, FDT_TAGALIGN(namelen+1));
+ memcpy(nh->name, name, namelen);
+ endtag = (uint32_t *)((char *)nh + nodelen - FDT_TAGSIZE);
+ *endtag = cpu_to_fdt32(FDT_END_NODE);
+
+ return offset;
+}
+
+int fdt_add_subnode(void *fdt, int parentoffset, const char *name)
+{
+ return fdt_add_subnode_namelen(fdt, parentoffset, name, strlen(name));
+}
+
+int fdt_del_node(void *fdt, int nodeoffset)
+{
+ int endoffset;
+
+ FDT_RW_CHECK_HEADER(fdt);
+
+ endoffset = _fdt_node_end_offset(fdt, nodeoffset);
+ if (endoffset < 0)
+ return endoffset;
+
+ return _fdt_splice_struct(fdt, _fdt_offset_ptr_w(fdt, nodeoffset),
+ endoffset - nodeoffset, 0);
+}
+
+static void _fdt_packblocks(const char *old, char *new,
+ int mem_rsv_size, int struct_size)
+{
+ int mem_rsv_off, struct_off, strings_off;
+
+ mem_rsv_off = FDT_ALIGN(sizeof(struct fdt_header), 8);
+ struct_off = mem_rsv_off + mem_rsv_size;
+ strings_off = struct_off + struct_size;
+
+ memmove(new + mem_rsv_off, old + fdt_off_mem_rsvmap(old), mem_rsv_size);
+ fdt_set_off_mem_rsvmap(new, mem_rsv_off);
+
+ memmove(new + struct_off, old + fdt_off_dt_struct(old), struct_size);
+ fdt_set_off_dt_struct(new, struct_off);
+ fdt_set_size_dt_struct(new, struct_size);
+
+ memmove(new + strings_off, old + fdt_off_dt_strings(old),
+ fdt_size_dt_strings(old));
+ fdt_set_off_dt_strings(new, strings_off);
+ fdt_set_size_dt_strings(new, fdt_size_dt_strings(old));
+}
+
+int fdt_open_into(const void *fdt, void *buf, int bufsize)
+{
+ int err;
+ int mem_rsv_size, struct_size;
+ int newsize;
+ const char *fdtstart = fdt;
+ const char *fdtend = fdtstart + fdt_totalsize(fdt);
+ char *tmp;
+
+ FDT_CHECK_HEADER(fdt);
+
+ mem_rsv_size = (fdt_num_mem_rsv(fdt)+1)
+ * sizeof(struct fdt_reserve_entry);
+
+ if (fdt_version(fdt) >= 17) {
+ struct_size = fdt_size_dt_struct(fdt);
+ } else {
+ struct_size = 0;
+ while (fdt_next_tag(fdt, struct_size, &struct_size) != FDT_END)
+ ;
+ }
+
+ if (!_fdt_blocks_misordered(fdt, mem_rsv_size, struct_size)) {
+ /* no further work necessary */
+ err = fdt_move(fdt, buf, bufsize);
+ if (err)
+ return err;
+ fdt_set_version(buf, 17);
+ fdt_set_size_dt_struct(buf, struct_size);
+ fdt_set_totalsize(buf, bufsize);
+ return 0;
+ }
+
+ /* Need to reorder */
+ newsize = FDT_ALIGN(sizeof(struct fdt_header), 8) + mem_rsv_size
+ + struct_size + fdt_size_dt_strings(fdt);
+
+ if (bufsize < newsize)
+ return -FDT_ERR_NOSPACE;
+
+ /* First attempt to build converted tree at beginning of buffer */
+ tmp = buf;
+ /* But if that overlaps with the old tree... */
+ if (((tmp + newsize) > fdtstart) && (tmp < fdtend)) {
+ /* Try right after the old tree instead */
+ tmp = (char *)(uintptr_t)fdtend;
+ if ((tmp + newsize) > ((char *)buf + bufsize))
+ return -FDT_ERR_NOSPACE;
+ }
+
+ _fdt_packblocks(fdt, tmp, mem_rsv_size, struct_size);
+ memmove(buf, tmp, newsize);
+
+ fdt_set_magic(buf, FDT_MAGIC);
+ fdt_set_totalsize(buf, bufsize);
+ fdt_set_version(buf, 17);
+ fdt_set_last_comp_version(buf, 16);
+ fdt_set_boot_cpuid_phys(buf, fdt_boot_cpuid_phys(fdt));
+
+ return 0;
+}
+
+int fdt_pack(void *fdt)
+{
+ int mem_rsv_size;
+
+ FDT_RW_CHECK_HEADER(fdt);
+
+ mem_rsv_size = (fdt_num_mem_rsv(fdt)+1)
+ * sizeof(struct fdt_reserve_entry);
+ _fdt_packblocks(fdt, fdt, mem_rsv_size, fdt_size_dt_struct(fdt));
+ fdt_set_totalsize(fdt, _fdt_data_size(fdt));
+
+ return 0;
+}
diff --git a/kexec/libfdt/fdt_strerror.c b/kexec/libfdt/fdt_strerror.c
new file mode 100644
index 0000000..e6c3cee
--- /dev/null
+++ b/kexec/libfdt/fdt_strerror.c
@@ -0,0 +1,96 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+struct fdt_errtabent {
+ const char *str;
+};
+
+#define FDT_ERRTABENT(val) \
+ [(val)] = { .str = #val, }
+
+static struct fdt_errtabent fdt_errtable[] = {
+ FDT_ERRTABENT(FDT_ERR_NOTFOUND),
+ FDT_ERRTABENT(FDT_ERR_EXISTS),
+ FDT_ERRTABENT(FDT_ERR_NOSPACE),
+
+ FDT_ERRTABENT(FDT_ERR_BADOFFSET),
+ FDT_ERRTABENT(FDT_ERR_BADPATH),
+ FDT_ERRTABENT(FDT_ERR_BADSTATE),
+
+ FDT_ERRTABENT(FDT_ERR_TRUNCATED),
+ FDT_ERRTABENT(FDT_ERR_BADMAGIC),
+ FDT_ERRTABENT(FDT_ERR_BADVERSION),
+ FDT_ERRTABENT(FDT_ERR_BADSTRUCTURE),
+ FDT_ERRTABENT(FDT_ERR_BADLAYOUT),
+};
+#define FDT_ERRTABSIZE (sizeof(fdt_errtable) / sizeof(fdt_errtable[0]))
+
+const char *fdt_strerror(int errval)
+{
+ if (errval > 0)
+ return "<valid offset/length>";
+ else if (errval == 0)
+ return "<no error>";
+ else if (errval > -FDT_ERRTABSIZE) {
+ const char *s = fdt_errtable[-errval].str;
+
+ if (s)
+ return s;
+ }
+
+ return "<unknown error>";
+}
diff --git a/kexec/libfdt/fdt_sw.c b/kexec/libfdt/fdt_sw.c
new file mode 100644
index 0000000..698329e
--- /dev/null
+++ b/kexec/libfdt/fdt_sw.c
@@ -0,0 +1,257 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+static int _fdt_sw_check_header(void *fdt)
+{
+ if (fdt_magic(fdt) != FDT_SW_MAGIC)
+ return -FDT_ERR_BADMAGIC;
+ /* FIXME: should check more details about the header state */
+ return 0;
+}
+
+#define FDT_SW_CHECK_HEADER(fdt) \
+ { \
+ int err; \
+ if ((err = _fdt_sw_check_header(fdt)) != 0) \
+ return err; \
+ }
+
+static void *_fdt_grab_space(void *fdt, int len)
+{
+ int offset = fdt_size_dt_struct(fdt);
+ int spaceleft;
+
+ spaceleft = fdt_totalsize(fdt) - fdt_off_dt_struct(fdt)
+ - fdt_size_dt_strings(fdt);
+
+ if ((offset + len < offset) || (offset + len > spaceleft))
+ return NULL;
+
+ fdt_set_size_dt_struct(fdt, offset + len);
+ return fdt_offset_ptr_w(fdt, offset, len);
+}
+
+int fdt_create(void *buf, int bufsize)
+{
+ void *fdt = buf;
+
+ if (bufsize < sizeof(struct fdt_header))
+ return -FDT_ERR_NOSPACE;
+
+ memset(buf, 0, bufsize);
+
+ fdt_set_magic(fdt, FDT_SW_MAGIC);
+ fdt_set_version(fdt, FDT_LAST_SUPPORTED_VERSION);
+ fdt_set_last_comp_version(fdt, FDT_FIRST_SUPPORTED_VERSION);
+ fdt_set_totalsize(fdt, bufsize);
+
+ fdt_set_off_mem_rsvmap(fdt, FDT_ALIGN(sizeof(struct fdt_header),
+ sizeof(struct fdt_reserve_entry)));
+ fdt_set_off_dt_struct(fdt, fdt_off_mem_rsvmap(fdt));
+ fdt_set_off_dt_strings(fdt, bufsize);
+
+ return 0;
+}
+
+int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size)
+{
+ struct fdt_reserve_entry *re;
+ int offset;
+
+ FDT_SW_CHECK_HEADER(fdt);
+
+ if (fdt_size_dt_struct(fdt))
+ return -FDT_ERR_BADSTATE;
+
+ offset = fdt_off_dt_struct(fdt);
+ if ((offset + sizeof(*re)) > fdt_totalsize(fdt))
+ return -FDT_ERR_NOSPACE;
+
+ re = (struct fdt_reserve_entry *)((char *)fdt + offset);
+ re->address = cpu_to_fdt64(addr);
+ re->size = cpu_to_fdt64(size);
+
+ fdt_set_off_dt_struct(fdt, offset + sizeof(*re));
+
+ return 0;
+}
+
+int fdt_finish_reservemap(void *fdt)
+{
+ return fdt_add_reservemap_entry(fdt, 0, 0);
+}
+
+int fdt_begin_node(void *fdt, const char *name)
+{
+ struct fdt_node_header *nh;
+ int namelen = strlen(name) + 1;
+
+ FDT_SW_CHECK_HEADER(fdt);
+
+ nh = _fdt_grab_space(fdt, sizeof(*nh) + FDT_TAGALIGN(namelen));
+ if (! nh)
+ return -FDT_ERR_NOSPACE;
+
+ nh->tag = cpu_to_fdt32(FDT_BEGIN_NODE);
+ memcpy(nh->name, name, namelen);
+ return 0;
+}
+
+int fdt_end_node(void *fdt)
+{
+ uint32_t *en;
+
+ FDT_SW_CHECK_HEADER(fdt);
+
+ en = _fdt_grab_space(fdt, FDT_TAGSIZE);
+ if (! en)
+ return -FDT_ERR_NOSPACE;
+
+ *en = cpu_to_fdt32(FDT_END_NODE);
+ return 0;
+}
+
+static int _fdt_find_add_string(void *fdt, const char *s)
+{
+ char *strtab = (char *)fdt + fdt_totalsize(fdt);
+ const char *p;
+ int strtabsize = fdt_size_dt_strings(fdt);
+ int len = strlen(s) + 1;
+ int struct_top, offset;
+
+ p = _fdt_find_string(strtab - strtabsize, strtabsize, s);
+ if (p)
+ return p - strtab;
+
+ /* Add it */
+ offset = -strtabsize - len;
+ struct_top = fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt);
+ if (fdt_totalsize(fdt) + offset < struct_top)
+ return 0; /* no more room :( */
+
+ memcpy(strtab + offset, s, len);
+ fdt_set_size_dt_strings(fdt, strtabsize + len);
+ return offset;
+}
+
+int fdt_property(void *fdt, const char *name, const void *val, int len)
+{
+ struct fdt_property *prop;
+ int nameoff;
+
+ FDT_SW_CHECK_HEADER(fdt);
+
+ nameoff = _fdt_find_add_string(fdt, name);
+ if (nameoff == 0)
+ return -FDT_ERR_NOSPACE;
+
+ prop = _fdt_grab_space(fdt, sizeof(*prop) + FDT_TAGALIGN(len));
+ if (! prop)
+ return -FDT_ERR_NOSPACE;
+
+ prop->tag = cpu_to_fdt32(FDT_PROP);
+ prop->nameoff = cpu_to_fdt32(nameoff);
+ prop->len = cpu_to_fdt32(len);
+ memcpy(prop->data, val, len);
+ return 0;
+}
+
+int fdt_finish(void *fdt)
+{
+ char *p = (char *)fdt;
+ uint32_t *end;
+ int oldstroffset, newstroffset;
+ uint32_t tag;
+ int offset, nextoffset;
+
+ FDT_SW_CHECK_HEADER(fdt);
+
+ /* Add terminator */
+ end = _fdt_grab_space(fdt, sizeof(*end));
+ if (! end)
+ return -FDT_ERR_NOSPACE;
+ *end = cpu_to_fdt32(FDT_END);
+
+ /* Relocate the string table */
+ oldstroffset = fdt_totalsize(fdt) - fdt_size_dt_strings(fdt);
+ newstroffset = fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt);
+ memmove(p + newstroffset, p + oldstroffset, fdt_size_dt_strings(fdt));
+ fdt_set_off_dt_strings(fdt, newstroffset);
+
+ /* Walk the structure, correcting string offsets */
+ offset = 0;
+ while ((tag = fdt_next_tag(fdt, offset, &nextoffset)) != FDT_END) {
+ if (tag == FDT_PROP) {
+ struct fdt_property *prop =
+ fdt_offset_ptr_w(fdt, offset, sizeof(*prop));
+ int nameoff;
+
+ if (! prop)
+ return -FDT_ERR_BADSTRUCTURE;
+
+ nameoff = fdt32_to_cpu(prop->nameoff);
+ nameoff += fdt_size_dt_strings(fdt);
+ prop->nameoff = cpu_to_fdt32(nameoff);
+ }
+ offset = nextoffset;
+ }
+
+ /* Finally, adjust the header */
+ fdt_set_totalsize(fdt, newstroffset + fdt_size_dt_strings(fdt));
+ fdt_set_magic(fdt, FDT_MAGIC);
+ return 0;
+}
diff --git a/kexec/libfdt/fdt_wip.c b/kexec/libfdt/fdt_wip.c
new file mode 100644
index 0000000..a4652c6
--- /dev/null
+++ b/kexec/libfdt/fdt_wip.c
@@ -0,0 +1,145 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
+ const void *val, int len)
+{
+ void *propval;
+ int proplen;
+
+ propval = fdt_getprop_w(fdt, nodeoffset, name, &proplen);
+ if (! propval)
+ return proplen;
+
+ if (proplen != len)
+ return -FDT_ERR_NOSPACE;
+
+ memcpy(propval, val, len);
+ return 0;
+}
+
+static void _fdt_nop_region(void *start, int len)
+{
+ uint32_t *p;
+
+ for (p = start; (char *)p < ((char *)start + len); p++)
+ *p = cpu_to_fdt32(FDT_NOP);
+}
+
+int fdt_nop_property(void *fdt, int nodeoffset, const char *name)
+{
+ struct fdt_property *prop;
+ int len;
+
+ prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
+ if (! prop)
+ return len;
+
+ _fdt_nop_region(prop, len + sizeof(*prop));
+
+ return 0;
+}
+
+int _fdt_node_end_offset(void *fdt, int nodeoffset)
+{
+ int level = 0;
+ uint32_t tag;
+ int offset, nextoffset;
+
+ tag = fdt_next_tag(fdt, nodeoffset, &nextoffset);
+ if (tag != FDT_BEGIN_NODE)
+ return -FDT_ERR_BADOFFSET;
+ do {
+ offset = nextoffset;
+ tag = fdt_next_tag(fdt, offset, &nextoffset);
+
+ switch (tag) {
+ case FDT_END:
+ return offset;
+
+ case FDT_BEGIN_NODE:
+ level++;
+ break;
+
+ case FDT_END_NODE:
+ level--;
+ break;
+
+ case FDT_PROP:
+ case FDT_NOP:
+ break;
+
+ default:
+ return -FDT_ERR_BADSTRUCTURE;
+ }
+ } while (level >= 0);
+
+ return nextoffset;
+}
+
+int fdt_nop_node(void *fdt, int nodeoffset)
+{
+ int endoffset;
+
+ endoffset = _fdt_node_end_offset(fdt, nodeoffset);
+ if (endoffset < 0)
+ return endoffset;
+
+ _fdt_nop_region(fdt_offset_ptr_w(fdt, nodeoffset, 0),
+ endoffset - nodeoffset);
+ return 0;
+}
diff --git a/kexec/libfdt/libfdt.h b/kexec/libfdt/libfdt.h
new file mode 100644
index 0000000..87a24ab
--- /dev/null
+++ b/kexec/libfdt/libfdt.h
@@ -0,0 +1,1100 @@
+#ifndef _LIBFDT_H
+#define _LIBFDT_H
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <libfdt_env.h>
+#include <fdt.h>
+
+#define FDT_FIRST_SUPPORTED_VERSION 0x10
+#define FDT_LAST_SUPPORTED_VERSION 0x11
+
+/* Error codes: informative error codes */
+#define FDT_ERR_NOTFOUND 1
+ /* FDT_ERR_NOTFOUND: The requested node or property does not exist */
+#define FDT_ERR_EXISTS 2
+ /* FDT_ERR_EXISTS: Attemped to create a node or property which
+ * already exists */
+#define FDT_ERR_NOSPACE 3
+ /* FDT_ERR_NOSPACE: Operation needed to expand the device
+ * tree, but its buffer did not have sufficient space to
+ * contain the expanded tree. Use fdt_open_into() to move the
+ * device tree to a buffer with more space. */
+
+/* Error codes: codes for bad parameters */
+#define FDT_ERR_BADOFFSET 4
+ /* FDT_ERR_BADOFFSET: Function was passed a structure block
+ * offset which is out-of-bounds, or which points to an
+ * unsuitable part of the structure for the operation. */
+#define FDT_ERR_BADPATH 5
+ /* FDT_ERR_BADPATH: Function was passed a badly formatted path
+ * (e.g. missing a leading / for a function which requires an
+ * absolute path) */
+#define FDT_ERR_BADPHANDLE 6
+ /* FDT_ERR_BADPHANDLE: Function was passed an invalid phandle
+ * value. phandle values of 0 and -1 are not permitted. */
+#define FDT_ERR_BADSTATE 7
+ /* FDT_ERR_BADSTATE: Function was passed an incomplete device
+ * tree created by the sequential-write functions, which is
+ * not sufficiently complete for the requested operation. */
+
+/* Error codes: codes for bad device tree blobs */
+#define FDT_ERR_TRUNCATED 8
+ /* FDT_ERR_TRUNCATED: Structure block of the given device tree
+ * ends without an FDT_END tag. */
+#define FDT_ERR_BADMAGIC 9
+ /* FDT_ERR_BADMAGIC: Given "device tree" appears not to be a
+ * device tree at all - it is missing the flattened device
+ * tree magic number. */
+#define FDT_ERR_BADVERSION 10
+ /* FDT_ERR_BADVERSION: Given device tree has a version which
+ * can't be handled by the requested operation. For
+ * read-write functions, this may mean that fdt_open_into() is
+ * required to convert the tree to the expected version. */
+#define FDT_ERR_BADSTRUCTURE 11
+ /* FDT_ERR_BADSTRUCTURE: Given device tree has a corrupt
+ * structure block or other serious error (e.g. misnested
+ * nodes, or subnodes preceding properties). */
+#define FDT_ERR_BADLAYOUT 12
+ /* FDT_ERR_BADLAYOUT: For read-write functions, the given
+ * device tree has it's sub-blocks in an order that the
+ * function can't handle (memory reserve map, then structure,
+ * then strings). Use fdt_open_into() to reorganize the tree
+ * into a form suitable for the read-write operations. */
+
+/* "Can't happen" error indicating a bug in libfdt */
+#define FDT_ERR_INTERNAL 13
+ /* FDT_ERR_INTERNAL: libfdt has failed an internal assertion.
+ * Should never be returned, if it is, it indicates a bug in
+ * libfdt itself. */
+
+#define FDT_ERR_MAX 13
+
+/**********************************************************************/
+/* Low-level functions (you probably don't need these) */
+/**********************************************************************/
+
+const void *fdt_offset_ptr(const void *fdt, int offset, int checklen);
+static inline void *fdt_offset_ptr_w(void *fdt, int offset, int checklen)
+{
+ return (void *)(uintptr_t)fdt_offset_ptr(fdt, offset, checklen);
+}
+
+uint32_t fdt_next_tag(const void *fdt, int offset, int *nextoffset);
+
+/**********************************************************************/
+/* Traversal functions */
+/**********************************************************************/
+
+int fdt_next_node(const void *fdt, int offset, int *depth);
+
+/**********************************************************************/
+/* General functions */
+/**********************************************************************/
+
+#define fdt_get_header(fdt, field) \
+ (fdt32_to_cpu(((const struct fdt_header *)(fdt))->field))
+#define fdt_magic(fdt) (fdt_get_header(fdt, magic))
+#define fdt_totalsize(fdt) (fdt_get_header(fdt, totalsize))
+#define fdt_off_dt_struct(fdt) (fdt_get_header(fdt, off_dt_struct))
+#define fdt_off_dt_strings(fdt) (fdt_get_header(fdt, off_dt_strings))
+#define fdt_off_mem_rsvmap(fdt) (fdt_get_header(fdt, off_mem_rsvmap))
+#define fdt_version(fdt) (fdt_get_header(fdt, version))
+#define fdt_last_comp_version(fdt) (fdt_get_header(fdt, last_comp_version))
+#define fdt_boot_cpuid_phys(fdt) (fdt_get_header(fdt, boot_cpuid_phys))
+#define fdt_size_dt_strings(fdt) (fdt_get_header(fdt, size_dt_strings))
+#define fdt_size_dt_struct(fdt) (fdt_get_header(fdt, size_dt_struct))
+
+#define __fdt_set_hdr(name) \
+ static inline void fdt_set_##name(void *fdt, uint32_t val) \
+ { \
+ struct fdt_header *fdth = fdt; \
+ fdth->name = cpu_to_fdt32(val); \
+ }
+__fdt_set_hdr(magic);
+__fdt_set_hdr(totalsize);
+__fdt_set_hdr(off_dt_struct);
+__fdt_set_hdr(off_dt_strings);
+__fdt_set_hdr(off_mem_rsvmap);
+__fdt_set_hdr(version);
+__fdt_set_hdr(last_comp_version);
+__fdt_set_hdr(boot_cpuid_phys);
+__fdt_set_hdr(size_dt_strings);
+__fdt_set_hdr(size_dt_struct);
+#undef __fdt_set_hdr
+
+/**
+ * fdt_check_header - sanity check a device tree or possible device tree
+ * @fdt: pointer to data which might be a flattened device tree
+ *
+ * fdt_check_header() checks that the given buffer contains what
+ * appears to be a flattened device tree with sane information in its
+ * header.
+ *
+ * returns:
+ * 0, if the buffer appears to contain a valid device tree
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE, standard meanings, as above
+ */
+int fdt_check_header(const void *fdt);
+
+/**
+ * fdt_move - move a device tree around in memory
+ * @fdt: pointer to the device tree to move
+ * @buf: pointer to memory where the device is to be moved
+ * @bufsize: size of the memory space at buf
+ *
+ * fdt_move() relocates, if possible, the device tree blob located at
+ * fdt to the buffer at buf of size bufsize. The buffer may overlap
+ * with the existing device tree blob at fdt. Therefore,
+ * fdt_move(fdt, fdt, fdt_totalsize(fdt))
+ * should always succeed.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, bufsize is insufficient to contain the device tree
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE, standard meanings
+ */
+int fdt_move(const void *fdt, void *buf, int bufsize);
+
+/**********************************************************************/
+/* Read-only functions */
+/**********************************************************************/
+
+/**
+ * fdt_string - retrieve a string from the strings block of a device tree
+ * @fdt: pointer to the device tree blob
+ * @stroffset: offset of the string within the strings block (native endian)
+ *
+ * fdt_string() retrieves a pointer to a single string from the
+ * strings block of the device tree blob at fdt.
+ *
+ * returns:
+ * a pointer to the string, on success
+ * NULL, if stroffset is out of bounds
+ */
+const char *fdt_string(const void *fdt, int stroffset);
+
+/**
+ * fdt_num_mem_rsv - retrieve the number of memory reserve map entries
+ * @fdt: pointer to the device tree blob
+ *
+ * Returns the number of entries in the device tree blob's memory
+ * reservation map. This does not include the terminating 0,0 entry
+ * or any other (0,0) entries reserved for expansion.
+ *
+ * returns:
+ * the number of entries
+ */
+int fdt_num_mem_rsv(const void *fdt);
+
+/**
+ * fdt_get_mem_rsv - retrieve one memory reserve map entry
+ * @fdt: pointer to the device tree blob
+ * @address, @size: pointers to 64-bit variables
+ *
+ * On success, *address and *size will contain the address and size of
+ * the n-th reserve map entry from the device tree blob, in
+ * native-endian format.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE, standard meanings
+ */
+int fdt_get_mem_rsv(const void *fdt, int n, uint64_t *address, uint64_t *size);
+
+/**
+ * fdt_subnode_offset_namelen - find a subnode based on substring
+ * @fdt: pointer to the device tree blob
+ * @parentoffset: structure block offset of a node
+ * @name: name of the subnode to locate
+ * @namelen: number of characters of name to consider
+ *
+ * Identical to fdt_subnode_offset(), but only examine the first
+ * namelen characters of name for matching the subnode name. This is
+ * useful for finding subnodes based on a portion of a larger string,
+ * such as a full path.
+ */
+int fdt_subnode_offset_namelen(const void *fdt, int parentoffset,
+ const char *name, int namelen);
+/**
+ * fdt_subnode_offset - find a subnode of a given node
+ * @fdt: pointer to the device tree blob
+ * @parentoffset: structure block offset of a node
+ * @name: name of the subnode to locate
+ *
+ * fdt_subnode_offset() finds a subnode of the node at structure block
+ * offset parentoffset with the given name. name may include a unit
+ * address, in which case fdt_subnode_offset() will find the subnode
+ * with that unit address, or the unit address may be omitted, in
+ * which case fdt_subnode_offset() will find an arbitrary subnode
+ * whose name excluding unit address matches the given name.
+ *
+ * returns:
+ * structure block offset of the requested subnode (>=0), on success
+ * -FDT_ERR_NOTFOUND, if the requested subnode does not exist
+ * -FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings.
+ */
+int fdt_subnode_offset(const void *fdt, int parentoffset, const char *name);
+
+/**
+ * fdt_path_offset - find a tree node by its full path
+ * @fdt: pointer to the device tree blob
+ * @path: full path of the node to locate
+ *
+ * fdt_path_offset() finds a node of a given path in the device tree.
+ * Each path component may omit the unit address portion, but the
+ * results of this are undefined if any such path component is
+ * ambiguous (that is if there are multiple nodes at the relevant
+ * level matching the given component, differentiated only by unit
+ * address).
+ *
+ * returns:
+ * structure block offset of the node with the requested path (>=0), on success
+ * -FDT_ERR_BADPATH, given path does not begin with '/' or is invalid
+ * -FDT_ERR_NOTFOUND, if the requested node does not exist
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings.
+ */
+int fdt_path_offset(const void *fdt, const char *path);
+
+/**
+ * fdt_get_name - retrieve the name of a given node
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: structure block offset of the starting node
+ * @lenp: pointer to an integer variable (will be overwritten) or NULL
+ *
+ * fdt_get_name() retrieves the name (including unit address) of the
+ * device tree node at structure block offset nodeoffset. If lenp is
+ * non-NULL, the length of this name is also returned, in the integer
+ * pointed to by lenp.
+ *
+ * returns:
+ * pointer to the node's name, on success
+ * If lenp is non-NULL, *lenp contains the length of that name (>=0)
+ * NULL, on error
+ * if lenp is non-NULL *lenp contains an error code (<0):
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE, standard meanings
+ */
+const char *fdt_get_name(const void *fdt, int nodeoffset, int *lenp);
+
+/**
+ * fdt_get_property - find a given property in a given node
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to find
+ * @name: name of the property to find
+ * @lenp: pointer to an integer variable (will be overwritten) or NULL
+ *
+ * fdt_get_property() retrieves a pointer to the fdt_property
+ * structure within the device tree blob corresponding to the property
+ * named 'name' of the node at offset nodeoffset. If lenp is
+ * non-NULL, the length of the property value is also returned, in the
+ * integer pointed to by lenp.
+ *
+ * returns:
+ * pointer to the structure representing the property
+ * if lenp is non-NULL, *lenp contains the length of the property
+ * value (>=0)
+ * NULL, on error
+ * if lenp is non-NULL, *lenp contains an error code (<0):
+ * -FDT_ERR_NOTFOUND, node does not have named property
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+const struct fdt_property *fdt_get_property(const void *fdt, int nodeoffset,
+ const char *name, int *lenp);
+static inline struct fdt_property *fdt_get_property_w(void *fdt, int nodeoffset,
+ const char *name,
+ int *lenp)
+{
+ return (struct fdt_property *)(uintptr_t)
+ fdt_get_property(fdt, nodeoffset, name, lenp);
+}
+
+/**
+ * fdt_getprop - retrieve the value of a given property
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to find
+ * @name: name of the property to find
+ * @lenp: pointer to an integer variable (will be overwritten) or NULL
+ *
+ * fdt_getprop() retrieves a pointer to the value of the property
+ * named 'name' of the node at offset nodeoffset (this will be a
+ * pointer to within the device blob itself, not a copy of the value).
+ * If lenp is non-NULL, the length of the property value is also
+ * returned, in the integer pointed to by lenp.
+ *
+ * returns:
+ * pointer to the property's value
+ * if lenp is non-NULL, *lenp contains the length of the property
+ * value (>=0)
+ * NULL, on error
+ * if lenp is non-NULL, *lenp contains an error code (<0):
+ * -FDT_ERR_NOTFOUND, node does not have named property
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+const void *fdt_getprop(const void *fdt, int nodeoffset,
+ const char *name, int *lenp);
+static inline void *fdt_getprop_w(void *fdt, int nodeoffset,
+ const char *name, int *lenp)
+{
+ return (void *)(uintptr_t)fdt_getprop(fdt, nodeoffset, name, lenp);
+}
+
+/**
+ * fdt_get_phandle - retrieve the phandle of a given node
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: structure block offset of the node
+ *
+ * fdt_get_phandle() retrieves the phandle of the device tree node at
+ * structure block offset nodeoffset.
+ *
+ * returns:
+ * the phandle of the node at nodeoffset, on success (!= 0, != -1)
+ * 0, if the node has no phandle, or another error occurs
+ */
+uint32_t fdt_get_phandle(const void *fdt, int nodeoffset);
+
+/**
+ * fdt_get_path - determine the full path of a node
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose path to find
+ * @buf: character buffer to contain the returned path (will be overwritten)
+ * @buflen: size of the character buffer at buf
+ *
+ * fdt_get_path() computes the full path of the node at offset
+ * nodeoffset, and records that path in the buffer at buf.
+ *
+ * NOTE: This function is expensive, as it must scan the device tree
+ * structure from the start to nodeoffset.
+ *
+ * returns:
+ * 0, on success
+ * buf contains the absolute path of the node at
+ * nodeoffset, as a NUL-terminated string.
+ * -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
+ * -FDT_ERR_NOSPACE, the path of the given node is longer than (bufsize-1)
+ * characters and will not fit in the given buffer.
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE, standard meanings
+ */
+int fdt_get_path(const void *fdt, int nodeoffset, char *buf, int buflen);
+
+/**
+ * fdt_supernode_atdepth_offset - find a specific ancestor of a node
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose parent to find
+ * @supernodedepth: depth of the ancestor to find
+ * @nodedepth: pointer to an integer variable (will be overwritten) or NULL
+ *
+ * fdt_supernode_atdepth_offset() finds an ancestor of the given node
+ * at a specific depth from the root (where the root itself has depth
+ * 0, its immediate subnodes depth 1 and so forth). So
+ * fdt_supernode_atdepth_offset(fdt, nodeoffset, 0, NULL);
+ * will always return 0, the offset of the root node. If the node at
+ * nodeoffset has depth D, then:
+ * fdt_supernode_atdepth_offset(fdt, nodeoffset, D, NULL);
+ * will return nodeoffset itself.
+ *
+ * NOTE: This function is expensive, as it must scan the device tree
+ * structure from the start to nodeoffset.
+ *
+ * returns:
+
+ * structure block offset of the node at node offset's ancestor
+ * of depth supernodedepth (>=0), on success
+ * -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
+* -FDT_ERR_NOTFOUND, supernodedepth was greater than the depth of nodeoffset
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE, standard meanings
+ */
+int fdt_supernode_atdepth_offset(const void *fdt, int nodeoffset,
+ int supernodedepth, int *nodedepth);
+
+/**
+ * fdt_node_depth - find the depth of a given node
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose parent to find
+ *
+ * fdt_node_depth() finds the depth of a given node. The root node
+ * has depth 0, its immediate subnodes depth 1 and so forth.
+ *
+ * NOTE: This function is expensive, as it must scan the device tree
+ * structure from the start to nodeoffset.
+ *
+ * returns:
+ * depth of the node at nodeoffset (>=0), on success
+ * -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE, standard meanings
+ */
+int fdt_node_depth(const void *fdt, int nodeoffset);
+
+/**
+ * fdt_parent_offset - find the parent of a given node
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose parent to find
+ *
+ * fdt_parent_offset() locates the parent node of a given node (that
+ * is, it finds the offset of the node which contains the node at
+ * nodeoffset as a subnode).
+ *
+ * NOTE: This function is expensive, as it must scan the device tree
+ * structure from the start to nodeoffset, *twice*.
+ *
+ * returns:
+ * structure block offset of the parent of the node at nodeoffset
+ * (>=0), on success
+ * -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE, standard meanings
+ */
+int fdt_parent_offset(const void *fdt, int nodeoffset);
+
+/**
+ * fdt_node_offset_by_prop_value - find nodes with a given property value
+ * @fdt: pointer to the device tree blob
+ * @startoffset: only find nodes after this offset
+ * @propname: property name to check
+ * @propval: property value to search for
+ * @proplen: length of the value in propval
+ *
+ * fdt_node_offset_by_prop_value() returns the offset of the first
+ * node after startoffset, which has a property named propname whose
+ * value is of length proplen and has value equal to propval; or if
+ * startoffset is -1, the very first such node in the tree.
+ *
+ * To iterate through all nodes matching the criterion, the following
+ * idiom can be used:
+ * offset = fdt_node_offset_by_prop_value(fdt, -1, propname,
+ * propval, proplen);
+ * while (offset != -FDT_ERR_NOTFOUND) {
+ * // other code here
+ * offset = fdt_node_offset_by_prop_value(fdt, offset, propname,
+ * propval, proplen);
+ * }
+ *
+ * Note the -1 in the first call to the function, if 0 is used here
+ * instead, the function will never locate the root node, even if it
+ * matches the criterion.
+ *
+ * returns:
+ * structure block offset of the located node (>= 0, >startoffset),
+ * on success
+ * -FDT_ERR_NOTFOUND, no node matching the criterion exists in the
+ * tree after startoffset
+ * -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE, standard meanings
+ */
+int fdt_node_offset_by_prop_value(const void *fdt, int startoffset,
+ const char *propname,
+ const void *propval, int proplen);
+
+/**
+ * fdt_node_offset_by_phandle - find the node with a given phandle
+ * @fdt: pointer to the device tree blob
+ * @phandle: phandle value
+ *
+ * fdt_node_offset_by_phandle() returns the offset of the node
+ * which has the given phandle value. If there is more than one node
+ * in the tree with the given phandle (an invalid tree), results are
+ * undefined.
+ *
+ * returns:
+ * structure block offset of the located node (>= 0), on success
+ * -FDT_ERR_NOTFOUND, no node with that phandle exists
+ * -FDT_ERR_BADPHANDLE, given phandle value was invalid (0 or -1)
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE, standard meanings
+ */
+int fdt_node_offset_by_phandle(const void *fdt, uint32_t phandle);
+
+/**
+ * fdt_node_check_compatible: check a node's compatible property
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of a tree node
+ * @compatible: string to match against
+ *
+ *
+ * fdt_node_check_compatible() returns 0 if the given node contains a
+ * 'compatible' property with the given string as one of its elements,
+ * it returns non-zero otherwise, or on error.
+ *
+ * returns:
+ * 0, if the node has a 'compatible' property listing the given string
+ * 1, if the node has a 'compatible' property, but it does not list
+ * the given string
+ * -FDT_ERR_NOTFOUND, if the given node has no 'compatible' property
+ * -FDT_ERR_BADOFFSET, if nodeoffset does not refer to a BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE, standard meanings
+ */
+int fdt_node_check_compatible(const void *fdt, int nodeoffset,
+ const char *compatible);
+
+/**
+ * fdt_node_offset_by_compatible - find nodes with a given 'compatible' value
+ * @fdt: pointer to the device tree blob
+ * @startoffset: only find nodes after this offset
+ * @compatible: 'compatible' string to match against
+ *
+ * fdt_node_offset_by_compatible() returns the offset of the first
+ * node after startoffset, which has a 'compatible' property which
+ * lists the given compatible string; or if startoffset is -1, the
+ * very first such node in the tree.
+ *
+ * To iterate through all nodes matching the criterion, the following
+ * idiom can be used:
+ * offset = fdt_node_offset_by_compatible(fdt, -1, compatible);
+ * while (offset != -FDT_ERR_NOTFOUND) {
+ * // other code here
+ * offset = fdt_node_offset_by_compatible(fdt, offset, compatible);
+ * }
+ *
+ * Note the -1 in the first call to the function, if 0 is used here
+ * instead, the function will never locate the root node, even if it
+ * matches the criterion.
+ *
+ * returns:
+ * structure block offset of the located node (>= 0, >startoffset),
+ * on success
+ * -FDT_ERR_NOTFOUND, no node matching the criterion exists in the
+ * tree after startoffset
+ * -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE, standard meanings
+ */
+int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
+ const char *compatible);
+
+/**********************************************************************/
+/* Write-in-place functions */
+/**********************************************************************/
+
+/**
+ * fdt_setprop_inplace - change a property's value, but not its size
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ * @val: pointer to data to replace the property value with
+ * @len: length of the property value
+ *
+ * fdt_setprop_inplace() replaces the value of a given property with
+ * the data in val, of length len. This function cannot change the
+ * size of a property, and so will only work if len is equal to the
+ * current length of the property.
+ *
+ * This function will alter only the bytes in the blob which contain
+ * the given property value, and will not alter or move any other part
+ * of the tree.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, if len is not equal to the property's current length
+ * -FDT_ERR_NOTFOUND, node does not have the named property
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
+ const void *val, int len);
+
+/**
+ * fdt_setprop_inplace_cell - change the value of a single-cell property
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ * @val: cell (32-bit integer) value to replace the property with
+ *
+ * fdt_setprop_inplace_cell() replaces the value of a given property
+ * with the 32-bit integer cell value in val, converting val to
+ * big-endian if necessary. This function cannot change the size of a
+ * property, and so will only work if the property already exists and
+ * has length 4.
+ *
+ * This function will alter only the bytes in the blob which contain
+ * the given property value, and will not alter or move any other part
+ * of the tree.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, if the property's length is not equal to 4
+ * -FDT_ERR_NOTFOUND, node does not have the named property
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+static inline int fdt_setprop_inplace_cell(void *fdt, int nodeoffset,
+ const char *name, uint32_t val)
+{
+ val = cpu_to_fdt32(val);
+ return fdt_setprop_inplace(fdt, nodeoffset, name, &val, sizeof(val));
+}
+
+/**
+ * fdt_nop_property - replace a property with nop tags
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to nop
+ * @name: name of the property to nop
+ *
+ * fdt_nop_property() will replace a given property's representation
+ * in the blob with FDT_NOP tags, effectively removing it from the
+ * tree.
+ *
+ * This function will alter only the bytes in the blob which contain
+ * the property, and will not alter or move any other part of the
+ * tree.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOTFOUND, node does not have the named property
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_nop_property(void *fdt, int nodeoffset, const char *name);
+
+/**
+ * fdt_nop_node - replace a node (subtree) with nop tags
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node to nop
+ *
+ * fdt_nop_node() will replace a given node's representation in the
+ * blob, including all its subnodes, if any, with FDT_NOP tags,
+ * effectively removing it from the tree.
+ *
+ * This function will alter only the bytes in the blob which contain
+ * the node and its properties and subnodes, and will not alter or
+ * move any other part of the tree.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_nop_node(void *fdt, int nodeoffset);
+
+/**********************************************************************/
+/* Sequential write functions */
+/**********************************************************************/
+
+int fdt_create(void *buf, int bufsize);
+int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size);
+int fdt_finish_reservemap(void *fdt);
+int fdt_begin_node(void *fdt, const char *name);
+int fdt_property(void *fdt, const char *name, const void *val, int len);
+static inline int fdt_property_cell(void *fdt, const char *name, uint32_t val)
+{
+ val = cpu_to_fdt32(val);
+ return fdt_property(fdt, name, &val, sizeof(val));
+}
+#define fdt_property_string(fdt, name, str) \
+ fdt_property(fdt, name, str, strlen(str)+1)
+int fdt_end_node(void *fdt);
+int fdt_finish(void *fdt);
+
+/**********************************************************************/
+/* Read-write functions */
+/**********************************************************************/
+
+int fdt_open_into(const void *fdt, void *buf, int bufsize);
+int fdt_pack(void *fdt);
+
+/**
+ * fdt_add_mem_rsv - add one memory reserve map entry
+ * @fdt: pointer to the device tree blob
+ * @address, @size: 64-bit values (native endian)
+ *
+ * Adds a reserve map entry to the given blob reserving a region at
+ * address address of length size.
+ *
+ * This function will insert data into the reserve map and will
+ * therefore change the indexes of some entries in the table.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
+ * contain the new reservation entry
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_add_mem_rsv(void *fdt, uint64_t address, uint64_t size);
+
+/**
+ * fdt_del_mem_rsv - remove a memory reserve map entry
+ * @fdt: pointer to the device tree blob
+ * @n: entry to remove
+ *
+ * fdt_del_mem_rsv() removes the n-th memory reserve map entry from
+ * the blob.
+ *
+ * This function will delete data from the reservation table and will
+ * therefore change the indexes of some entries in the table.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOTFOUND, there is no entry of the given index (i.e. there
+ * are less than n+1 reserve map entries)
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_del_mem_rsv(void *fdt, int n);
+
+/**
+ * fdt_set_name - change the name of a given node
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: structure block offset of a node
+ * @name: name to give the node
+ *
+ * fdt_set_name() replaces the name (including unit address, if any)
+ * of the given node with the given string. NOTE: this function can't
+ * efficiently check if the new name is unique amongst the given
+ * node's siblings; results are undefined if this function is invoked
+ * with a name equal to one of the given node's siblings.
+ *
+ * This function may insert or delete data from the blob, and will
+ * therefore change the offsets of some existing nodes.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, there is insufficient free space in the blob
+ * to contain the new name
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE, standard meanings
+ */
+int fdt_set_name(void *fdt, int nodeoffset, const char *name);
+
+/**
+ * fdt_setprop - create or change a property
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ * @val: pointer to data to set the property value to
+ * @len: length of the property value
+ *
+ * fdt_setprop() sets the value of the named property in the given
+ * node to the given value and length, creating the property if it
+ * does not already exist.
+ *
+ * This function may insert or delete data from the blob, and will
+ * therefore change the offsets of some existing nodes.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
+ * contain the new property value
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_setprop(void *fdt, int nodeoffset, const char *name,
+ const void *val, int len);
+
+/**
+ * fdt_setprop_cell - set a property to a single cell value
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ * @val: 32-bit integer value for the property (native endian)
+ *
+ * fdt_setprop_cell() sets the value of the named property in the
+ * given node to the given cell value (converting to big-endian if
+ * necessary), or creates a new property with that value if it does
+ * not already exist.
+ *
+ * This function may insert or delete data from the blob, and will
+ * therefore change the offsets of some existing nodes.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
+ * contain the new property value
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+static inline int fdt_setprop_cell(void *fdt, int nodeoffset, const char *name,
+ uint32_t val)
+{
+ val = cpu_to_fdt32(val);
+ return fdt_setprop(fdt, nodeoffset, name, &val, sizeof(val));
+}
+
+/**
+ * fdt_setprop_string - set a property to a string value
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ * @str: string value for the property
+ *
+ * fdt_setprop_string() sets the value of the named property in the
+ * given node to the given string value (using the length of the
+ * string to determine the new length of the property), or creates a
+ * new property with that value if it does not already exist.
+ *
+ * This function may insert or delete data from the blob, and will
+ * therefore change the offsets of some existing nodes.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
+ * contain the new property value
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+#define fdt_setprop_string(fdt, nodeoffset, name, str) \
+ fdt_setprop((fdt), (nodeoffset), (name), (str), strlen(str)+1)
+
+/**
+ * fdt_delprop - delete a property
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to nop
+ * @name: name of the property to nop
+ *
+ * fdt_del_property() will delete the given property.
+ *
+ * This function will delete data from the blob, and will therefore
+ * change the offsets of some existing nodes.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_NOTFOUND, node does not have the named property
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_delprop(void *fdt, int nodeoffset, const char *name);
+
+/**
+ * fdt_add_subnode_namelen - creates a new node based on substring
+ * @fdt: pointer to the device tree blob
+ * @parentoffset: structure block offset of a node
+ * @name: name of the subnode to locate
+ * @namelen: number of characters of name to consider
+ *
+ * Identical to fdt_add_subnode(), but use only the first namelen
+ * characters of name as the name of the new node. This is useful for
+ * creating subnodes based on a portion of a larger string, such as a
+ * full path.
+ */
+int fdt_add_subnode_namelen(void *fdt, int parentoffset,
+ const char *name, int namelen);
+
+/**
+ * fdt_add_subnode - creates a new node
+ * @fdt: pointer to the device tree blob
+ * @parentoffset: structure block offset of a node
+ * @name: name of the subnode to locate
+ *
+ * fdt_add_subnode() creates a new node as a subnode of the node at
+ * structure block offset parentoffset, with the given name (which
+ * should include the unit address, if any).
+ *
+ * This function will insert data into the blob, and will therefore
+ * change the offsets of some existing nodes.
+
+ * returns:
+ * structure block offset of the created nodeequested subnode (>=0), on success
+ * -FDT_ERR_NOTFOUND, if the requested subnode does not exist
+ * -FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE tag
+ * -FDT_ERR_EXISTS, if the node at parentoffset already has a subnode of
+ * the given name
+ * -FDT_ERR_NOSPACE, if there is insufficient free space in the
+ * blob to contain the new node
+ * -FDT_ERR_NOSPACE
+ * -FDT_ERR_BADLAYOUT
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings.
+ */
+int fdt_add_subnode(void *fdt, int parentoffset, const char *name);
+
+/**
+ * fdt_del_node - delete a node (subtree)
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node to nop
+ *
+ * fdt_del_node() will remove the given node, including all its
+ * subnodes if any, from the blob.
+ *
+ * This function will delete data from the blob, and will therefore
+ * change the offsets of some existing nodes.
+ *
+ * returns:
+ * 0, on success
+ * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ * -FDT_ERR_BADLAYOUT,
+ * -FDT_ERR_BADMAGIC,
+ * -FDT_ERR_BADVERSION,
+ * -FDT_ERR_BADSTATE,
+ * -FDT_ERR_BADSTRUCTURE,
+ * -FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_del_node(void *fdt, int nodeoffset);
+
+/**********************************************************************/
+/* Debugging / informational functions */
+/**********************************************************************/
+
+const char *fdt_strerror(int errval);
+
+#define FDT_ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1))
+#define FDT_TAGALIGN(x) (FDT_ALIGN((x), FDT_TAGSIZE))
+
+/*
+ * if add a new subnode:
+ * see: fdt_add_subnode -> fdt_add_subnode_namelen
+ */
+static inline int fdt_node_len(const char* node_name)
+{
+ return sizeof(struct fdt_node_header) +
+ FDT_TAGALIGN(strlen(node_name) + 1) + FDT_TAGSIZE;
+}
+
+/*
+ * if add a new prop: (assume prop_name not exist in strtab)
+ * see: fdt_setprop -> _fdt_add_property
+ */
+static inline int fdt_prop_len(const char* prop_name, int len)
+{
+ return (strlen(prop_name) + 1) +
+ sizeof(struct fdt_property) +
+ FDT_TAGALIGN(len);
+}
+
+#endif /* _LIBFDT_H */
diff --git a/kexec/libfdt/libfdt_env.h b/kexec/libfdt/libfdt_env.h
new file mode 100644
index 0000000..449bf60
--- /dev/null
+++ b/kexec/libfdt/libfdt_env.h
@@ -0,0 +1,23 @@
+#ifndef _LIBFDT_ENV_H
+#define _LIBFDT_ENV_H
+
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#define _B(n) ((unsigned long long)((uint8_t *)&x)[n])
+static inline uint32_t fdt32_to_cpu(uint32_t x)
+{
+ return (_B(0) << 24) | (_B(1) << 16) | (_B(2) << 8) | _B(3);
+}
+#define cpu_to_fdt32(x) fdt32_to_cpu(x)
+
+static inline uint64_t fdt64_to_cpu(uint64_t x)
+{
+ return (_B(0) << 56) | (_B(1) << 48) | (_B(2) << 40) | (_B(3) << 32)
+ | (_B(4) << 24) | (_B(5) << 16) | (_B(6) << 8) | _B(7);
+}
+#define cpu_to_fdt64(x) fdt64_to_cpu(x)
+#undef _B
+
+#endif /* _LIBFDT_ENV_H */
diff --git a/kexec/libfdt/libfdt_internal.h b/kexec/libfdt/libfdt_internal.h
new file mode 100644
index 0000000..7e6c4c8
--- /dev/null
+++ b/kexec/libfdt/libfdt_internal.h
@@ -0,0 +1,92 @@
+#ifndef _LIBFDT_INTERNAL_H
+#define _LIBFDT_INTERNAL_H
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ * b) Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <fdt.h>
+
+#define FDT_CHECK_HEADER(fdt) \
+ { \
+ int err; \
+ if ((err = fdt_check_header(fdt)) != 0) \
+ return err; \
+ }
+
+uint32_t _fdt_next_tag(const void *fdt, int startoffset, int *nextoffset);
+int _fdt_check_node_offset(const void *fdt, int offset);
+const char *_fdt_find_string(const char *strtab, int tabsize, const char *s);
+int _fdt_node_end_offset(void *fdt, int nodeoffset);
+
+static inline const void *_fdt_offset_ptr(const void *fdt, int offset)
+{
+ return (const char *)fdt + fdt_off_dt_struct(fdt) + offset;
+}
+
+static inline void *_fdt_offset_ptr_w(void *fdt, int offset)
+{
+ return (void *)(uintptr_t)_fdt_offset_ptr(fdt, offset);
+}
+
+static inline const struct fdt_reserve_entry *_fdt_mem_rsv(const void *fdt, int n)
+{
+ const struct fdt_reserve_entry *rsv_table =
+ (const struct fdt_reserve_entry *)
+ ((const char *)fdt + fdt_off_mem_rsvmap(fdt));
+
+ return rsv_table + n;
+}
+static inline struct fdt_reserve_entry *_fdt_mem_rsv_w(void *fdt, int n)
+{
+ return (void *)(uintptr_t)_fdt_mem_rsv(fdt, n);
+}
+
+#define FDT_SW_MAGIC (~FDT_MAGIC)
+
+#endif /* _LIBFDT_INTERNAL_H */
diff --git a/kexec/lzma.c b/kexec/lzma.c
new file mode 100644
index 0000000..2fc07e6
--- /dev/null
+++ b/kexec/lzma.c
@@ -0,0 +1,253 @@
+#include <unistd.h>
+#include <sys/types.h>
+
+#include "kexec-lzma.h"
+#include "config.h"
+#include "kexec.h"
+
+#ifdef HAVE_LIBLZMA
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/stat.h>
+#include <ctype.h>
+#include <lzma.h>
+
+#define kBufferSize (1 << 15)
+
+typedef struct lzfile {
+ uint8_t buf[kBufferSize];
+ lzma_stream strm;
+ FILE *file;
+ int encoding;
+ int eof;
+} LZFILE;
+
+LZFILE *lzopen(const char *path, const char *mode);
+int lzclose(LZFILE *lzfile);
+ssize_t lzread(LZFILE *lzfile, void *buf, size_t len);
+
+static LZFILE *lzopen_internal(const char *path, const char *mode, int fd)
+{
+ int level = 5;
+ int encoding = 0;
+ FILE *fp;
+ LZFILE *lzfile;
+ lzma_ret ret;
+ lzma_stream lzma_strm_tmp = LZMA_STREAM_INIT;
+
+ for (; *mode; mode++) {
+ if (*mode == 'w')
+ encoding = 1;
+ else if (*mode == 'r')
+ encoding = 0;
+ else if (*mode >= '1' && *mode <= '9')
+ level = *mode - '0';
+ }
+ if (fd != -1)
+ fp = fdopen(fd, encoding ? "w" : "r");
+ else
+ fp = fopen(path, encoding ? "w" : "r");
+ if (!fp)
+ return NULL;
+
+ lzfile = calloc(1, sizeof(*lzfile));
+
+ if (!lzfile) {
+ fclose(fp);
+ return NULL;
+ }
+
+ lzfile->file = fp;
+ lzfile->encoding = encoding;
+ lzfile->eof = 0;
+ lzfile->strm = lzma_strm_tmp;
+ if (encoding) {
+ lzma_options_lzma opt_lzma;
+ if (lzma_lzma_preset(&opt_lzma, level - 1))
+ return NULL;
+ ret = lzma_alone_encoder(&lzfile->strm, &opt_lzma);
+ } else {
+ ret = lzma_auto_decoder(&lzfile->strm,
+ UINT64_C(64) * 1024 * 1024, 0);
+ }
+ if (ret != LZMA_OK) {
+ fclose(fp);
+ free(lzfile);
+ return NULL;
+ }
+ return lzfile;
+}
+
+LZFILE *lzopen(const char *path, const char *mode)
+{
+ return lzopen_internal(path, mode, -1);
+}
+
+int lzclose(LZFILE *lzfile)
+{
+ lzma_ret ret;
+ size_t n;
+
+ if (!lzfile)
+ return -1;
+
+ if (lzfile->encoding) {
+ for (;;) {
+ lzfile->strm.avail_out = kBufferSize;
+ lzfile->strm.next_out = lzfile->buf;
+ ret = lzma_code(&lzfile->strm, LZMA_FINISH);
+ if (ret != LZMA_OK && ret != LZMA_STREAM_END)
+ return -1;
+ n = kBufferSize - lzfile->strm.avail_out;
+ if (n && fwrite(lzfile->buf, 1, n, lzfile->file) != n)
+ return -1;
+ if (ret == LZMA_STREAM_END)
+ break;
+ }
+ }
+ lzma_end(&lzfile->strm);
+
+ return fclose(lzfile->file);
+ free(lzfile);
+}
+
+ssize_t lzread(LZFILE *lzfile, void *buf, size_t len)
+{
+ lzma_ret ret;
+ int eof = 0;
+
+ if (!lzfile || lzfile->encoding)
+ return -1;
+
+ if (lzfile->eof)
+ return 0;
+
+ lzfile->strm.next_out = buf;
+ lzfile->strm.avail_out = len;
+
+ for (;;) {
+ if (!lzfile->strm.avail_in) {
+ lzfile->strm.next_in = lzfile->buf;
+ lzfile->strm.avail_in = fread(lzfile->buf, 1, kBufferSize, lzfile->file);
+ if (!lzfile->strm.avail_in)
+ eof = 1;
+ }
+
+ ret = lzma_code(&lzfile->strm, LZMA_RUN);
+ if (ret == LZMA_STREAM_END) {
+ lzfile->eof = 1;
+ return len - lzfile->strm.avail_out;
+ }
+
+ if (ret != LZMA_OK)
+ return -1;
+
+ if (!lzfile->strm.avail_out)
+ return len;
+
+ if (eof)
+ return -1;
+ }
+}
+
+int is_lzma_file(const char *filename)
+{
+ FILE *fp;
+ int ret = 0;
+ uint8_t buf[13];
+
+ if (!filename)
+ return 0;
+
+ fp = fopen(filename, "r");
+ if (fp == NULL)
+ return 0;
+
+ const size_t size = fread(buf, 1, sizeof(buf), fp);
+
+ if (size != 13) {
+ /* file is too small to be a lzma file. */
+ fclose(fp);
+ return 0;
+ }
+
+ lzma_filter filter = { .id = LZMA_FILTER_LZMA1 };
+
+ switch (lzma_properties_decode(&filter, NULL, buf, 5)) {
+ case LZMA_OK:
+ ret = 1;
+ break;
+ default:
+ /* It's not a lzma file */
+ ret = 0;
+ }
+
+ fclose(fp);
+ return ret;
+}
+
+char *lzma_decompress_file(const char *filename, off_t *r_size)
+{
+ LZFILE *fp;
+ char *buf;
+ off_t size, allocated;
+ ssize_t result;
+
+ dbgprintf("Try LZMA decompression.\n");
+
+ *r_size = 0;
+ if (!filename)
+ return NULL;
+
+ if (!is_lzma_file(filename))
+ return NULL;
+
+ fp = lzopen(filename, "rb");
+ if (fp == 0) {
+ dbgprintf("Cannot open `%s'\n", filename);
+ return NULL;
+ }
+ size = 0;
+ allocated = 65536;
+ buf = xmalloc(allocated);
+ do {
+ if (size == allocated) {
+ allocated <<= 1;
+ buf = xrealloc(buf, allocated);
+ }
+ result = lzread(fp, buf + size, allocated - size);
+ if (result < 0) {
+ if ((errno == EINTR) || (errno == EAGAIN))
+ continue;
+
+ dbgprintf("%s: read on %s of %ld bytes failed\n",
+ __func__, filename, (allocated - size) + 0UL);
+ break;
+ }
+ size += result;
+ } while (result > 0);
+
+ if (lzclose(fp) != LZMA_OK) {
+ dbgprintf("%s: Close of %s failed\n", __func__, filename);
+ goto fail;
+ }
+ if (result < 0)
+ goto fail;
+
+ *r_size = size;
+ return buf;
+fail:
+ free(buf);
+ return NULL;
+}
+#else
+char *lzma_decompress_file(const char *UNUSED(filename), off_t *UNUSED(r_size))
+{
+ return NULL;
+}
+#endif /* HAVE_LIBLZMA */
diff --git a/kexec/mem_regions.c b/kexec/mem_regions.c
new file mode 100644
index 0000000..ad7d3f1
--- /dev/null
+++ b/kexec/mem_regions.c
@@ -0,0 +1,169 @@
+#include <stdlib.h>
+
+#include "kexec.h"
+#include "mem_regions.h"
+
+static int mem_range_cmp(const void *a1, const void *a2)
+{
+ const struct memory_range *r1 = a1;
+ const struct memory_range *r2 = a2;
+
+ if (r1->start > r2->start)
+ return 1;
+ if (r1->start < r2->start)
+ return -1;
+
+ return 0;
+}
+
+/**
+ * mem_regions_sort() - sort ranges into ascending address order
+ * @ranges: ranges to sort
+ *
+ * Sort the memory regions into ascending address order.
+ */
+void mem_regions_sort(struct memory_ranges *ranges)
+{
+ qsort(ranges->ranges, ranges->size, sizeof(*ranges->ranges),
+ mem_range_cmp);
+}
+
+/**
+ * mem_regions_add() - add a memory region to a set of ranges
+ * @ranges: ranges to add the memory region to
+ * @base: base address of memory region
+ * @length: length of memory region in bytes
+ * @type: type of memory region
+ *
+ * Add the memory region to the set of ranges, and return %0 if successful,
+ * or %-1 if we ran out of space.
+ */
+int mem_regions_add(struct memory_ranges *ranges, unsigned long long base,
+ unsigned long long length, int type)
+{
+ struct memory_range *range;
+
+ if (ranges->size >= ranges->max_size)
+ return -1;
+
+ range = ranges->ranges + ranges->size++;
+ range->start = base;
+ range->end = base + length - 1;
+ range->type = type;
+
+ return 0;
+}
+
+static void mem_regions_remove(struct memory_ranges *ranges, int index)
+{
+ int tail_entries;
+
+ /* we are assured to have at least one entry */
+ ranges->size -= 1;
+
+ /* if we have following entries, shuffle them down one place */
+ tail_entries = ranges->size - index;
+ if (tail_entries)
+ memmove(ranges->ranges + index, ranges->ranges + index + 1,
+ tail_entries * sizeof(*ranges->ranges));
+
+ /* zero the new tail entry */
+ memset(ranges->ranges + ranges->size, 0, sizeof(*ranges->ranges));
+}
+
+/**
+ * mem_regions_exclude() - excludes a memory region from a set of memory ranges
+ * @ranges: memory ranges to exclude the region from
+ * @range: memory range to exclude
+ *
+ * Exclude a memory region from a set of memory ranges. We assume that
+ * the region to be excluded is either wholely located within one of the
+ * memory ranges, or not at all.
+ */
+int mem_regions_exclude(struct memory_ranges *ranges,
+ const struct memory_range *range)
+{
+ int i, ret;
+
+ for (i = 0; i < ranges->size; i++) {
+ struct memory_range *r = ranges->ranges + i;
+
+ /*
+ * We assume that crash area is fully contained in
+ * some larger memory area.
+ */
+ if (r->start <= range->start && r->end >= range->end) {
+ if (r->start == range->start) {
+ if (r->end == range->end)
+ /* Remove this entry */
+ mem_regions_remove(ranges, i);
+ else
+ /* Shrink the start of this memory range */
+ r->start = range->end + 1;
+ } else if (r->end == range->end) {
+ /* Shrink the end of this memory range */
+ r->end = range->start - 1;
+ } else {
+ /*
+ * Split this area into 2 smaller ones and
+ * remove excluded range from between. First
+ * create new entry for the remaining area.
+ */
+ ret = mem_regions_add(ranges, range->end + 1,
+ r->end - range->end, 0);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Update this area to end before excluded
+ * range.
+ */
+ r->end = range->start - 1;
+ break;
+ }
+ }
+ }
+ return 0;
+}
+
+#define KEXEC_MEMORY_RANGES 16
+
+int mem_regions_alloc_and_add(struct memory_ranges *ranges,
+ unsigned long long base,
+ unsigned long long length, int type)
+{
+ void *new_ranges;
+
+ if (ranges->size >= ranges->max_size) {
+ new_ranges = realloc(ranges->ranges,
+ sizeof(struct memory_range) *
+ (ranges->max_size + KEXEC_MEMORY_RANGES));
+ if (!new_ranges)
+ return -1;
+
+ ranges->ranges = new_ranges;
+ ranges->max_size += KEXEC_MEMORY_RANGES;
+ }
+
+ return mem_regions_add(ranges, base, length, type);
+}
+
+int mem_regions_alloc_and_exclude(struct memory_ranges *ranges,
+ const struct memory_range *range)
+{
+ void *new_ranges;
+
+ /* for safety, we should have at least one free entry in ranges */
+ if (ranges->size >= ranges->max_size) {
+ new_ranges = realloc(ranges->ranges,
+ sizeof(struct memory_range) *
+ (ranges->max_size + KEXEC_MEMORY_RANGES));
+ if (!new_ranges)
+ return -1;
+
+ ranges->ranges = new_ranges;
+ ranges->max_size += KEXEC_MEMORY_RANGES;
+ }
+
+ return mem_regions_exclude(ranges, range);
+}
diff --git a/kexec/mem_regions.h b/kexec/mem_regions.h
new file mode 100644
index 0000000..e306d67
--- /dev/null
+++ b/kexec/mem_regions.h
@@ -0,0 +1,22 @@
+#ifndef MEM_REGIONS_H
+#define MEM_REGIONS_H
+
+struct memory_ranges;
+struct memory_range;
+
+void mem_regions_sort(struct memory_ranges *ranges);
+
+int mem_regions_exclude(struct memory_ranges *ranges,
+ const struct memory_range *range);
+
+int mem_regions_add(struct memory_ranges *ranges, unsigned long long base,
+ unsigned long long length, int type);
+
+int mem_regions_alloc_and_exclude(struct memory_ranges *ranges,
+ const struct memory_range *range);
+
+int mem_regions_alloc_and_add(struct memory_ranges *ranges,
+ unsigned long long base,
+ unsigned long long length, int type);
+
+#endif
diff --git a/kexec/phys_arch.c b/kexec/phys_arch.c
new file mode 100644
index 0000000..1571a0f
--- /dev/null
+++ b/kexec/phys_arch.c
@@ -0,0 +1,28 @@
+#include "kexec.h"
+#include <errno.h>
+#include <string.h>
+#include <sys/utsname.h>
+
+long physical_arch(void)
+{
+ struct utsname utsname;
+ int i, result = uname(&utsname);
+ if (result < 0) {
+ fprintf(stderr, "uname failed: %s\n",
+ strerror(errno));
+ return -1;
+ }
+
+ for (i = 0; arches[i].machine; ++i) {
+ if (strcmp(utsname.machine, arches[i].machine) == 0)
+ return arches[i].arch;
+ if ((strcmp(arches[i].machine, "arm") == 0) &&
+ (strncmp(utsname.machine, arches[i].machine,
+ strlen(arches[i].machine)) == 0))
+ return arches[i].arch;
+ }
+
+ fprintf(stderr, "Unsupported machine type: %s\n",
+ utsname.machine);
+ return -1;
+}
diff --git a/kexec/phys_to_virt.c b/kexec/phys_to_virt.c
new file mode 100644
index 0000000..5e8c4e3
--- /dev/null
+++ b/kexec/phys_to_virt.c
@@ -0,0 +1,16 @@
+#include "kexec.h"
+#include "crashdump.h"
+
+/**
+ * phys_to_virt() - translate physical address to virtual address
+ * @paddr: physical address to translate
+ *
+ * For most architectures physical address is simply virtual address minus
+ * PAGE_OFFSET. Architectures that don't follow this convention should provide
+ * their own implementation.
+ */
+unsigned long
+phys_to_virt(struct crash_elf_info *elf_info, unsigned long long paddr)
+{
+ return paddr + elf_info->page_offset;
+}
diff --git a/kexec/proc_iomem.c b/kexec/proc_iomem.c
new file mode 100644
index 0000000..85daa85
--- /dev/null
+++ b/kexec/proc_iomem.c
@@ -0,0 +1,13 @@
+#include "kexec.h"
+
+static const char proc_iomem_str[] = "/proc/iomem";
+
+/*
+ * Allow an architecture specific implementation of this
+ * function to override the location of a file looking a lot
+ * like /proc/iomem
+ */
+const char *proc_iomem(void)
+{
+ return proc_iomem_str;
+}
diff --git a/kexec/symbols.c b/kexec/symbols.c
new file mode 100644
index 0000000..04377ca
--- /dev/null
+++ b/kexec/symbols.c
@@ -0,0 +1,36 @@
+#include <stdio.h>
+#include <string.h>
+#include "kexec.h"
+
+/* Retrieve kernel symbol virtual address from /proc/kallsyms */
+unsigned long long get_kernel_sym(const char *symbol)
+{
+ const char *kallsyms = "/proc/kallsyms";
+ char sym[128];
+ char line[128];
+ FILE *fp;
+ unsigned long long vaddr;
+ char type;
+
+ fp = fopen(kallsyms, "r");
+ if (!fp) {
+ fprintf(stderr, "Cannot open %s\n", kallsyms);
+ return 0;
+ }
+
+ while (fgets(line, sizeof(line), fp) != NULL) {
+ if (sscanf(line, "%llx %c %s", &vaddr, &type, sym) != 3)
+ continue;
+ if (strcmp(sym, symbol) == 0) {
+ dbgprintf("kernel symbol %s vaddr = %16llx\n",
+ symbol, vaddr);
+ fclose(fp);
+ return vaddr;
+ }
+ }
+
+ dbgprintf("Cannot get kernel %s symbol address\n", symbol);
+
+ fclose(fp);
+ return 0;
+}
diff --git a/kexec/virt_to_phys.c b/kexec/virt_to_phys.c
new file mode 100644
index 0000000..a746917
--- /dev/null
+++ b/kexec/virt_to_phys.c
@@ -0,0 +1,7 @@
+#include "kexec.h"
+#include <stdlib.h>
+
+unsigned long virt_to_phys(unsigned long UNUSED(addr))
+{
+ abort();
+}
diff --git a/kexec/zlib.c b/kexec/zlib.c
new file mode 100644
index 0000000..3ed6bd6
--- /dev/null
+++ b/kexec/zlib.c
@@ -0,0 +1,129 @@
+#include "kexec-zlib.h"
+#include "kexec.h"
+
+#ifdef HAVE_LIBZ
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <ctype.h>
+#include <zlib.h>
+
+static void _gzerror(gzFile fp, int *errnum, const char **errmsg)
+{
+ *errmsg = gzerror(fp, errnum);
+ if (*errnum == Z_ERRNO) {
+ *errmsg = strerror(*errnum);
+ }
+}
+
+int is_zlib_file(const char *filename, off_t *r_size)
+{
+ gzFile fp;
+ int errnum;
+ int is_zlib_file = 0; /* default: It's not in gzip format */
+ const char *msg;
+ ssize_t result;
+
+ if (!filename)
+ goto out;
+
+ fp = gzopen(filename, "rb");
+ if (fp == 0) {
+ _gzerror(fp, &errnum, &msg);
+ dbgprintf("Cannot open `%s': %s\n", filename, msg);
+ goto out;
+ }
+
+ if (!gzdirect(fp))
+ /* It's in gzip format */
+ is_zlib_file = 1;
+
+ result = gzclose(fp);
+ if (result != Z_OK) {
+ _gzerror(fp, &errnum, &msg);
+ dbgprintf(" Close of %s failed: %s\n", filename, msg);
+ }
+
+out:
+ return is_zlib_file;
+}
+
+char *zlib_decompress_file(const char *filename, off_t *r_size)
+{
+ gzFile fp;
+ int errnum;
+ const char *msg;
+ char *buf = NULL;
+ off_t size = 0, allocated;
+ ssize_t result;
+
+ dbgprintf("Try gzip decompression.\n");
+
+ *r_size = 0;
+ if (!filename) {
+ return NULL;
+ }
+ fp = gzopen(filename, "rb");
+ if (fp == 0) {
+ _gzerror(fp, &errnum, &msg);
+ dbgprintf("Cannot open `%s': %s\n", filename, msg);
+ return NULL;
+ }
+ if (gzdirect(fp)) {
+ /* It's not in gzip format */
+ goto fail;
+ }
+ allocated = 65536;
+ buf = xmalloc(allocated);
+ do {
+ if (size == allocated) {
+ allocated <<= 1;
+ buf = xrealloc(buf, allocated);
+ }
+ result = gzread(fp, buf + size, allocated - size);
+ if (result < 0) {
+ if ((errno == EINTR) || (errno == EAGAIN))
+ continue;
+ _gzerror(fp, &errnum, &msg);
+ dbgprintf("Read on %s of %d bytes failed: %s\n",
+ filename, (int)(allocated - size), msg);
+ size = 0;
+ goto fail;
+ }
+ size += result;
+ } while(result > 0);
+
+fail:
+ result = gzclose(fp);
+ if (result != Z_OK) {
+ _gzerror(fp, &errnum, &msg);
+ dbgprintf(" Close of %s failed: %s\n", filename, msg);
+ }
+
+ if (size > 0) {
+ *r_size = size;
+ } else {
+ free(buf);
+ buf = NULL;
+ }
+ return buf;
+}
+#else
+
+int is_zlib_file(const char *filename, off_t *r_size)
+{
+ return 0;
+}
+
+char *zlib_decompress_file(const char *UNUSED(filename), off_t *UNUSED(r_size))
+{
+ return NULL;
+}
+#endif /* HAVE_ZLIB */