diff options
Diffstat (limited to 'arch/x86/boot/Makefile')
| -rw-r--r-- | arch/x86/boot/Makefile | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile new file mode 100644 index 0000000000..f33e45ed14 --- /dev/null +++ b/arch/x86/boot/Makefile @@ -0,0 +1,157 @@ +# +# arch/x86/boot/Makefile +# +# 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 +# Changed by many, many contributors over the years. +# + +# Sanitizer runtimes are unavailable and cannot be linked for early boot code. +KASAN_SANITIZE := n +KCSAN_SANITIZE := n +KMSAN_SANITIZE := n +OBJECT_FILES_NON_STANDARD := y + +# Kernel does not boot with kcov instrumentation here. +# One of the problems observed was insertion of __sanitizer_cov_trace_pc() +# callback into middle of per-cpu data enabling code. Thus the callback observed +# inconsistent state and crashed. We are interested mostly in syscall coverage, +# so boot code is not interesting anyway. +KCOV_INSTRUMENT := n + +# If you want to preset the SVGA mode, uncomment the next line and +# set SVGA_MODE to whatever number you want. +# Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode. +# The number is the same as you would ordinarily press at bootup. + +SVGA_MODE := -DSVGA_MODE=NORMAL_VGA + +targets := vmlinux.bin setup.bin setup.elf bzImage +targets += fdimage fdimage144 fdimage288 image.iso hdimage +subdir- := compressed + +setup-y += a20.o bioscall.o cmdline.o copy.o cpu.o cpuflags.o cpucheck.o +setup-y += early_serial_console.o edd.o header.o main.o memory.o +setup-y += pm.o pmjump.o printf.o regs.o string.o tty.o video.o +setup-y += video-mode.o version.o +setup-$(CONFIG_X86_APM_BOOT) += apm.o + +# The link order of the video-*.o modules can matter. In particular, +# video-vga.o *must* be listed first, followed by video-vesa.o. +# Hardware-specific drivers should follow in the order they should be +# probed, and video-bios.o should typically be last. +setup-y += video-vga.o +setup-y += video-vesa.o +setup-y += video-bios.o + +targets += $(setup-y) +hostprogs := tools/build +hostprogs += mkcpustr + +HOST_EXTRACFLAGS += -I$(srctree)/tools/include \ + -include include/generated/autoconf.h \ + -D__EXPORTED_HEADERS__ + +$(obj)/cpu.o: $(obj)/cpustr.h + +quiet_cmd_cpustr = CPUSTR $@ + cmd_cpustr = $(obj)/mkcpustr > $@ +$(obj)/cpustr.h: $(obj)/mkcpustr FORCE + $(call if_changed,cpustr) +targets += cpustr.h + +# --------------------------------------------------------------------------- + +KBUILD_CFLAGS := $(REALMODE_CFLAGS) -D_SETUP +KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ +KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) +KBUILD_CFLAGS += -fno-asynchronous-unwind-tables +GCOV_PROFILE := n +UBSAN_SANITIZE := n + +$(obj)/bzImage: asflags-y := $(SVGA_MODE) + +quiet_cmd_image = BUILD $@ +silent_redirect_image = >/dev/null +cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \ + $(obj)/zoffset.h $@ $($(quiet)redirect_image) + +$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE + $(call if_changed,image) + @$(kecho) 'Kernel: $@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),`cat .version`)')' + +OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S +$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE + $(call if_changed,objcopy) + +SETUP_OBJS = $(addprefix $(obj)/,$(setup-y)) + +sed-zoffset := -e 's/^\([0-9a-fA-F]*\) [a-zA-Z] \(startup_32\|startup_64\|efi32_stub_entry\|efi64_stub_entry\|efi_pe_entry\|efi32_pe_entry\|input_data\|kernel_info\|_end\|_ehead\|_text\|z_.*\)$$/\#define ZO_\2 0x\1/p' + +quiet_cmd_zoffset = ZOFFSET $@ + cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@ + +targets += zoffset.h +$(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE + $(call if_changed,zoffset) + + +AFLAGS_header.o += -I$(objtree)/$(obj) +$(obj)/header.o: $(obj)/zoffset.h + +LDFLAGS_setup.elf := -m elf_i386 -z noexecstack -T +$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE + $(call if_changed,ld) + +OBJCOPYFLAGS_setup.bin := -O binary +$(obj)/setup.bin: $(obj)/setup.elf FORCE + $(call if_changed,objcopy) + +$(obj)/compressed/vmlinux: FORCE + $(Q)$(MAKE) $(build)=$(obj)/compressed $@ + +# Set this if you want to pass append arguments to the +# bzdisk/fdimage/hdimage/isoimage kernel +FDARGS = +# Set this if you want one or more initrds included in the image +FDINITRD = + +imgdeps = $(obj)/bzImage $(obj)/mtools.conf $(src)/genimage.sh + +$(obj)/mtools.conf: $(src)/mtools.conf.in + sed -e 's|@OBJ@|$(obj)|g' < $< > $@ + +targets += mtools.conf + +# genimage.sh requires bash, but it also has a bunch of other +# external dependencies. +quiet_cmd_genimage = GENIMAGE $3 +cmd_genimage = $(BASH) $(srctree)/$(src)/genimage.sh $2 $3 $(obj)/bzImage \ + $(obj)/mtools.conf '$(FDARGS)' $(FDINITRD) + +PHONY += bzdisk fdimage fdimage144 fdimage288 hdimage isoimage + +# This requires write access to /dev/fd0 +# All images require syslinux to be installed; hdimage also requires +# EDK2/OVMF if the kernel is compiled with the EFI stub. +bzdisk: $(imgdeps) + $(call cmd,genimage,bzdisk,/dev/fd0) + +fdimage fdimage144: $(imgdeps) + $(call cmd,genimage,fdimage144,$(obj)/fdimage) + @$(kecho) 'Kernel: $(obj)/fdimage is ready' + +fdimage288: $(imgdeps) + $(call cmd,genimage,fdimage288,$(obj)/fdimage) + @$(kecho) 'Kernel: $(obj)/fdimage is ready' + +hdimage: $(imgdeps) + $(call cmd,genimage,hdimage,$(obj)/hdimage) + @$(kecho) 'Kernel: $(obj)/hdimage is ready' + +isoimage: $(imgdeps) + $(call cmd,genimage,isoimage,$(obj)/image.iso) + @$(kecho) 'Kernel: $(obj)/image.iso is ready' |