Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 407 insertions, 0 deletions

diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
new file mode 100644
index 0000000000..f19dbaa1d5
--- /dev/null
+++ b/arch/powerpc/Makefile
@@ -0,0 +1,407 @@
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies.
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License.  See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# Copyright (C) 1994 by Linus Torvalds
+# Changes for PPC by Gary Thomas
+# Rewritten by Cort Dougan and Paul Mackerras
+#
+
+HAS_BIARCH	:= $(call cc-option-yn, -m32)
+
+# Set default 32 bits cross compilers for vdso and boot wrapper
+CROSS32_COMPILE ?=
+
+# If we're on a ppc/ppc64/ppc64le machine use that defconfig, otherwise just use
+# ppc64_defconfig because we have nothing better to go on.
+uname := $(shell uname -m)
+KBUILD_DEFCONFIG := $(if $(filter ppc%,$(uname)),$(uname),ppc64)_defconfig
+
+new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
+
+ifeq ($(new_nm),y)
+NM		:= $(NM) --synthetic
+endif
+
+# BITS is used as extension for files which are available in a 32 bit
+# and a 64 bit version to simplify shared Makefiles.
+# e.g.: obj-y += foo_$(BITS).o
+export BITS
+
+ifdef CONFIG_PPC64
+        BITS := 64
+else
+        BITS := 32
+endif
+
+machine-y = ppc
+machine-$(CONFIG_PPC64) += 64
+machine-$(CONFIG_CPU_LITTLE_ENDIAN) += le
+UTS_MACHINE := $(subst $(space),,$(machine-y))
+
+ifeq ($(CONFIG_PPC64)$(CONFIG_LD_IS_BFD),yy)
+# Have the linker provide sfpr if possible.
+# There is a corresponding test in arch/powerpc/lib/Makefile
+KBUILD_LDFLAGS_MODULE += --save-restore-funcs
+else
+KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
+endif
+
+ifdef CONFIG_CPU_LITTLE_ENDIAN
+KBUILD_CFLAGS	+= -mlittle-endian
+KBUILD_LDFLAGS	+= -EL
+LDEMULATION	:= lppc
+GNUTARGET	:= powerpcle
+MULTIPLEWORD	:= -mno-multiple
+KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-save-toc-indirect)
+else
+KBUILD_CFLAGS += $(call cc-option,-mbig-endian)
+KBUILD_LDFLAGS	+= -EB
+LDEMULATION	:= ppc
+GNUTARGET	:= powerpc
+MULTIPLEWORD	:= -mmultiple
+endif
+
+ifdef CONFIG_PPC64
+ifndef CONFIG_CC_IS_CLANG
+cflags-$(CONFIG_PPC64_ELF_ABI_V1)	+= $(call cc-option,-mabi=elfv1)
+cflags-$(CONFIG_PPC64_ELF_ABI_V1)	+= $(call cc-option,-mcall-aixdesc)
+aflags-$(CONFIG_PPC64_ELF_ABI_V1)	+= $(call cc-option,-mabi=elfv1)
+aflags-$(CONFIG_PPC64_ELF_ABI_V2)	+= -mabi=elfv2
+endif
+endif
+
+ifndef CONFIG_CC_IS_CLANG
+  cflags-$(CONFIG_CPU_LITTLE_ENDIAN)	+= -mno-strict-align
+endif
+
+cflags-$(CONFIG_CPU_BIG_ENDIAN)		+= $(call cc-option,-mbig-endian)
+cflags-$(CONFIG_CPU_LITTLE_ENDIAN)	+= -mlittle-endian
+aflags-$(CONFIG_CPU_BIG_ENDIAN)		+= $(call cc-option,-mbig-endian)
+aflags-$(CONFIG_CPU_LITTLE_ENDIAN)	+= -mlittle-endian
+
+ifeq ($(HAS_BIARCH),y)
+KBUILD_CFLAGS	+= -m$(BITS)
+KBUILD_AFLAGS	+= -m$(BITS)
+KBUILD_LDFLAGS	+= -m elf$(BITS)$(LDEMULATION)
+endif
+
+cflags-$(CONFIG_STACKPROTECTOR)	+= -mstack-protector-guard=tls
+ifdef CONFIG_PPC64
+cflags-$(CONFIG_STACKPROTECTOR)	+= -mstack-protector-guard-reg=r13
+else
+cflags-$(CONFIG_STACKPROTECTOR)	+= -mstack-protector-guard-reg=r2
+endif
+
+LDFLAGS_vmlinux-y := -Bstatic
+LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie
+LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) += -z notext
+LDFLAGS_vmlinux	:= $(LDFLAGS_vmlinux-y)
+
+ifdef CONFIG_PPC64
+ifndef CONFIG_PPC_KERNEL_PCREL
+ifeq ($(call cc-option-yn,-mcmodel=medium),y)
+	# -mcmodel=medium breaks modules because it uses 32bit offsets from
+	# the TOC pointer to create pointers where possible. Pointers into the
+	# percpu data area are created by this method.
+	#
+	# The kernel module loader relocates the percpu data section from the
+	# original location (starting with 0xd...) to somewhere in the base
+	# kernel percpu data space (starting with 0xc...). We need a full
+	# 64bit relocation for this to work, hence -mcmodel=large.
+	KBUILD_CFLAGS_MODULE += -mcmodel=large
+else
+	export NO_MINIMAL_TOC := -mno-minimal-toc
+endif
+endif
+endif
+
+CFLAGS-$(CONFIG_PPC64)	:= $(call cc-option,-mtraceback=no)
+ifdef CONFIG_PPC64_ELF_ABI_V2
+CFLAGS-$(CONFIG_PPC64)	+= $(call cc-option,-mabi=elfv2,$(call cc-option,-mcall-aixdesc))
+else
+ifndef CONFIG_CC_IS_CLANG
+CFLAGS-$(CONFIG_PPC64)	+= $(call cc-option,-mabi=elfv1)
+CFLAGS-$(CONFIG_PPC64)	+= $(call cc-option,-mcall-aixdesc)
+endif
+endif
+CFLAGS-$(CONFIG_PPC64)	+= $(call cc-option,-mcmodel=medium,$(call cc-option,-mminimal-toc))
+CFLAGS-$(CONFIG_PPC64)	+= $(call cc-option,-mno-pointers-to-nested-functions)
+CFLAGS-$(CONFIG_PPC64)	+= $(call cc-option,-mlong-double-128)
+
+# Clang unconditionally reserves r2 on ppc32 and does not support the flag
+# https://bugs.llvm.org/show_bug.cgi?id=39555
+CFLAGS-$(CONFIG_PPC32)	:= $(call cc-option, -ffixed-r2)
+
+# Clang doesn't support -mmultiple / -mno-multiple
+# https://bugs.llvm.org/show_bug.cgi?id=39556
+CFLAGS-$(CONFIG_PPC32)	+= $(call cc-option, $(MULTIPLEWORD))
+
+CFLAGS-$(CONFIG_PPC32)	+= $(call cc-option,-mno-readonly-in-sdata)
+
+ifdef CONFIG_FUNCTION_TRACER
+ifdef CONFIG_ARCH_USING_PATCHABLE_FUNCTION_ENTRY
+KBUILD_CPPFLAGS	+= -DCC_USING_PATCHABLE_FUNCTION_ENTRY
+CC_FLAGS_FTRACE := -fpatchable-function-entry=2
+else
+CC_FLAGS_FTRACE := -pg
+ifdef CONFIG_MPROFILE_KERNEL
+CC_FLAGS_FTRACE += -mprofile-kernel
+endif
+endif
+endif
+
+CFLAGS-$(CONFIG_TARGET_CPU_BOOL) += -mcpu=$(CONFIG_TARGET_CPU)
+AFLAGS-$(CONFIG_TARGET_CPU_BOOL) += -mcpu=$(CONFIG_TARGET_CPU)
+
+CFLAGS-y += $(CONFIG_TUNE_CPU)
+
+asinstr := $(call as-instr,lis 9$(comma)foo@high,-DHAVE_AS_ATHIGH=1)
+
+KBUILD_CPPFLAGS	+= -I $(srctree)/arch/$(ARCH) $(asinstr)
+KBUILD_AFLAGS	+= $(AFLAGS-y)
+KBUILD_CFLAGS	+= $(call cc-option,-msoft-float)
+KBUILD_CFLAGS	+= $(CFLAGS-y)
+CPP		= $(CC) -E $(KBUILD_CFLAGS)
+
+CHECKFLAGS	+= -m$(BITS) -D__powerpc__ -D__powerpc$(BITS)__
+ifdef CONFIG_CPU_BIG_ENDIAN
+CHECKFLAGS	+= -D__BIG_ENDIAN__
+else
+CHECKFLAGS	+= -D__LITTLE_ENDIAN__
+endif
+
+ifdef CONFIG_476FPE_ERR46
+	KBUILD_LDFLAGS_MODULE += --ppc476-workaround \
+		-T $(srctree)/arch/powerpc/platforms/44x/ppc476_modules.lds
+endif
+
+# No prefix or pcrel
+ifdef CONFIG_PPC_KERNEL_PREFIXED
+KBUILD_CFLAGS += $(call cc-option,-mprefixed)
+else
+KBUILD_CFLAGS += $(call cc-option,-mno-prefixed)
+endif
+ifdef CONFIG_PPC_KERNEL_PCREL
+KBUILD_CFLAGS += $(call cc-option,-mpcrel)
+else
+KBUILD_CFLAGS += $(call cc-option,-mno-pcrel)
+endif
+
+# No AltiVec or VSX or MMA instructions when building kernel
+KBUILD_CFLAGS += $(call cc-option,-mno-altivec)
+KBUILD_CFLAGS += $(call cc-option,-mno-vsx)
+KBUILD_CFLAGS += $(call cc-option,-mno-mma)
+
+# No SPE instruction when building kernel
+# (We use all available options to help semi-broken compilers)
+KBUILD_CFLAGS += $(call cc-option,-mno-spe)
+KBUILD_CFLAGS += $(call cc-option,-mspe=no)
+
+# Don't emit .eh_frame since we have no use for it
+KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
+
+# Never use string load/store instructions as they are
+# often slow when they are implemented at all
+KBUILD_CFLAGS		+= $(call cc-option,-mno-string)
+
+cpu-as-$(CONFIG_ALTIVEC)	+= $(call as-option,-Wa$(comma)-maltivec)
+
+# When using '-many -mpower4' gas will first try and find a matching power4
+# mnemonic and failing that it will allow any valid mnemonic that GAS knows
+# about. GCC will pass -many to GAS when assembling, clang does not.
+# LLVM IAS doesn't understand either flag: https://github.com/ClangBuiltLinux/linux/issues/675
+# but LLVM IAS only supports ISA >= 2.06 for Book3S 64 anyway...
+cpu-as-$(CONFIG_PPC_BOOK3S_64)	+= $(call as-option,-Wa$(comma)-mpower4) $(call as-option,-Wa$(comma)-many)
+
+KBUILD_AFLAGS += $(cpu-as-y)
+KBUILD_CFLAGS += $(cpu-as-y)
+
+KBUILD_AFLAGS += $(aflags-y)
+KBUILD_CFLAGS += $(cflags-y)
+
+# Default to zImage, override when needed
+all: zImage
+
+# With make 3.82 we cannot mix normal and wildcard targets
+BOOT_TARGETS1 := zImage zImage.initrd uImage
+BOOT_TARGETS2 := zImage% dtbImage% treeImage.% cuImage.% simpleImage.% uImage.%
+
+PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2)
+
+boot := arch/$(ARCH)/boot
+
+$(BOOT_TARGETS1): vmlinux
+	$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
+$(BOOT_TARGETS2): vmlinux
+	$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
+
+
+PHONY += bootwrapper_install
+bootwrapper_install:
+	$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
+
+include $(srctree)/scripts/Makefile.defconf
+
+generated_configs += ppc64le_defconfig
+ppc64le_defconfig:
+	$(call merge_into_defconfig,ppc64_defconfig,le)
+
+generated_configs += ppc64le_guest_defconfig
+ppc64le_guest_defconfig:
+	$(call merge_into_defconfig,ppc64_defconfig,le guest kvm_guest)
+
+generated_configs += ppc64_guest_defconfig
+ppc64_guest_defconfig:
+	$(call merge_into_defconfig,ppc64_defconfig,be guest kvm_guest)
+
+generated_configs += pseries_le_defconfig
+pseries_le_defconfig: ppc64le_guest_defconfig
+
+generated_configs += pseries_defconfig
+pseries_defconfig: ppc64le_guest_defconfig
+
+generated_configs += powernv_be_defconfig
+powernv_be_defconfig:
+	$(call merge_into_defconfig,powernv_defconfig,be)
+
+generated_configs += mpc85xx_defconfig
+mpc85xx_defconfig:
+	$(call merge_into_defconfig,mpc85xx_base.config,\
+		85xx-32bit 85xx-hw fsl-emb-nonhw)
+
+generated_configs += mpc85xx_smp_defconfig
+mpc85xx_smp_defconfig:
+	$(call merge_into_defconfig,mpc85xx_base.config,\
+		85xx-32bit 85xx-smp 85xx-hw fsl-emb-nonhw)
+
+generated_configs += corenet32_smp_defconfig
+corenet32_smp_defconfig:
+	$(call merge_into_defconfig,corenet_base.config,\
+		85xx-32bit 85xx-smp 85xx-hw fsl-emb-nonhw dpaa)
+
+generated_configs += corenet64_smp_defconfig
+corenet64_smp_defconfig:
+	$(call merge_into_defconfig,corenet_base.config,\
+		85xx-64bit 85xx-smp altivec 85xx-hw fsl-emb-nonhw dpaa)
+
+generated_configs += mpc86xx_defconfig
+mpc86xx_defconfig:
+	$(call merge_into_defconfig,mpc86xx_base.config,\
+		86xx-hw fsl-emb-nonhw)
+
+generated_configs += mpc86xx_smp_defconfig
+mpc86xx_smp_defconfig:
+	$(call merge_into_defconfig,mpc86xx_base.config,\
+		86xx-smp 86xx-hw fsl-emb-nonhw)
+
+generated_configs += ppc32_allmodconfig
+ppc32_allmodconfig:
+	$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/book3s_32.config \
+		-f $(srctree)/Makefile allmodconfig
+
+generated_configs += ppc_defconfig
+ppc_defconfig:
+	$(call merge_into_defconfig,book3s_32.config,)
+
+generated_configs += ppc64le_allmodconfig
+ppc64le_allmodconfig:
+	$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/le.config \
+		-f $(srctree)/Makefile allmodconfig
+
+generated_configs += ppc64le_allnoconfig
+ppc64le_allnoconfig:
+	$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/ppc64le.config \
+		-f $(srctree)/Makefile allnoconfig
+
+generated_configs += ppc64_book3e_allmodconfig
+ppc64_book3e_allmodconfig:
+	$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/85xx-64bit.config \
+		-f $(srctree)/Makefile allmodconfig
+
+generated_configs += ppc32_randconfig
+ppc32_randconfig:
+	$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/32-bit.config \
+		-f $(srctree)/Makefile randconfig
+
+generated_configs += ppc64_randconfig
+ppc64_randconfig:
+	$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/64-bit.config \
+		-f $(srctree)/Makefile randconfig
+
+PHONY += $(generated_configs)
+
+define archhelp
+  echo '* zImage          - Build default images selected by kernel config'
+  echo '  zImage.*        - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
+  echo '  uImage          - U-Boot native image format'
+  echo '  cuImage.<dt>    - Backwards compatible U-Boot image for older'
+  echo '                    versions which do not support device trees'
+  echo '  dtbImage.<dt>   - zImage with an embedded device tree blob'
+  echo '  simpleImage.<dt> - Firmware independent image.'
+  echo '  treeImage.<dt>  - Support for older IBM 4xx firmware (not U-Boot)'
+  echo '  install         - Install kernel using'
+  echo '                    (your) ~/bin/$(INSTALLKERNEL) or'
+  echo '                    (distribution) /sbin/$(INSTALLKERNEL) or'
+  echo '                    install to $$(INSTALL_PATH) and run lilo'
+  echo '  *_defconfig     - Select default config from arch/$(ARCH)/configs'
+  echo ''
+  echo '  Targets with <dt> embed a device tree blob inside the image'
+  echo '  These targets support board with firmware that does not'
+  echo '  support passing a device tree directly.  Replace <dt> with the'
+  echo '  name of a dts file from the arch/$(ARCH)/boot/dts/ directory'
+  echo '  (minus the .dts extension).'
+  echo
+  $(foreach cfg,$(generated_configs),
+    printf "  %-27s - Build for %s\\n" $(cfg) $(subst _defconfig,,$(cfg));)
+endef
+
+PHONY += install
+install:
+	$(call cmd,install)
+
+ifeq ($(KBUILD_EXTMOD),)
+# We need to generate vdso-offsets.h before compiling certain files in kernel/.
+# In order to do that, we should use the archprepare target, but we can't since
+# asm-offsets.h is included in some files used to generate vdso-offsets.h, and
+# asm-offsets.h is built in prepare0, for which archprepare is a dependency.
+# Therefore we need to generate the header after prepare0 has been made, hence
+# this hack.
+prepare: vdso_prepare
+vdso_prepare: prepare0
+	$(if $(CONFIG_VDSO32),$(Q)$(MAKE) \
+		$(build)=arch/powerpc/kernel/vdso include/generated/vdso32-offsets.h)
+	$(if $(CONFIG_PPC64),$(Q)$(MAKE) \
+		$(build)=arch/powerpc/kernel/vdso include/generated/vdso64-offsets.h)
+endif
+
+archprepare: checkbin
+
+archheaders:
+	$(Q)$(MAKE) $(build)=arch/powerpc/kernel/syscalls all
+
+ifdef CONFIG_STACKPROTECTOR
+prepare: stack_protector_prepare
+
+PHONY += stack_protector_prepare
+stack_protector_prepare: prepare0
+ifdef CONFIG_PPC64
+	$(eval KBUILD_CFLAGS += -mstack-protector-guard-offset=$(shell awk '{if ($$2 == "PACA_CANARY") print $$3;}' include/generated/asm-offsets.h))
+else
+	$(eval KBUILD_CFLAGS += -mstack-protector-guard-offset=$(shell awk '{if ($$2 == "TASK_CANARY") print $$3;}' include/generated/asm-offsets.h))
+endif
+endif
+
+PHONY += checkbin
+checkbin:
+	@if test "x${CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT}" = "xy" -a \
+		"x${CONFIG_LD_IS_BFD}" = "xy" -a \
+		"${CONFIG_LD_VERSION}" = "23700" ; then \
+		echo -n '*** binutils 2.37 drops unused section symbols, which recordmcount ' ; \
+		echo 'is unable to handle.' ; \
+		echo '*** Please use a different binutils version.' ; \
+		false ; \
+	fi