diff options
Diffstat (limited to 'arch/x86/boot/compressed/Makefile')
| -rw-r--r-- | arch/x86/boot/compressed/Makefile | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile new file mode 100644 index 000000000..0a291cdfa --- /dev/null +++ b/arch/x86/boot/compressed/Makefile @@ -0,0 +1,102 @@ +# +# linux/arch/x86/boot/compressed/Makefile +# +# create a compressed vmlinux image from the original vmlinux +# +# vmlinuz is: +# decompression code (*.o) +# asm globals (piggy.S), including: +# vmlinux.bin.(gz|bz2|lzma|...) +# +# vmlinux.bin is: +# vmlinux stripped of debugging and comments +# vmlinux.bin.all is: +# vmlinux.bin + vmlinux.relocs +# vmlinux.bin.(gz|bz2|lzma|...) is: +# (see scripts/Makefile.lib size_append) +# compressed vmlinux.bin.all + u32 size of vmlinux.bin.all + +KASAN_SANITIZE := n + +targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma \ + vmlinux.bin.xz vmlinux.bin.lzo vmlinux.bin.lz4 + +KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2 +KBUILD_CFLAGS += -fno-strict-aliasing -fPIC +KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING +cflags-$(CONFIG_X86_32) := -march=i386 +cflags-$(CONFIG_X86_64) := -mcmodel=small +KBUILD_CFLAGS += $(cflags-y) +KBUILD_CFLAGS += -mno-mmx -mno-sse +KBUILD_CFLAGS += $(call cc-option,-ffreestanding) +KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) + +KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ +GCOV_PROFILE := n + +LDFLAGS := -m elf_$(UTS_MACHINE) +LDFLAGS_vmlinux := -T + +hostprogs-y := mkpiggy +HOST_EXTRACFLAGS += -I$(srctree)/tools/include + +vmlinux-objs-y := $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o \ + $(obj)/string.o $(obj)/cmdline.o \ + $(obj)/piggy.o $(obj)/cpuflags.o + +vmlinux-objs-$(CONFIG_EARLY_PRINTK) += $(obj)/early_serial_console.o +vmlinux-objs-$(CONFIG_RANDOMIZE_BASE) += $(obj)/aslr.o + +$(obj)/eboot.o: KBUILD_CFLAGS += -fshort-wchar -mno-red-zone + +vmlinux-objs-$(CONFIG_EFI_STUB) += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o \ + $(objtree)/drivers/firmware/efi/libstub/lib.a +vmlinux-objs-$(CONFIG_EFI_MIXED) += $(obj)/efi_thunk_$(BITS).o + +$(obj)/vmlinux: $(vmlinux-objs-y) FORCE + $(call if_changed,ld) + @: + +OBJCOPYFLAGS_vmlinux.bin := -R .comment -S +$(obj)/vmlinux.bin: vmlinux FORCE + $(call if_changed,objcopy) + +targets += $(patsubst $(obj)/%,%,$(vmlinux-objs-y)) vmlinux.bin.all vmlinux.relocs + +CMD_RELOCS = arch/x86/tools/relocs +quiet_cmd_relocs = RELOCS $@ + cmd_relocs = $(CMD_RELOCS) $< > $@;$(CMD_RELOCS) --abs-relocs $< +$(obj)/vmlinux.relocs: vmlinux FORCE + $(call if_changed,relocs) + +vmlinux.bin.all-y := $(obj)/vmlinux.bin +vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs + +$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE + $(call if_changed,gzip) +$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE + $(call if_changed,bzip2) +$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE + $(call if_changed,lzma) +$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE + $(call if_changed,xzkern) +$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE + $(call if_changed,lzo) +$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE + $(call if_changed,lz4) + +suffix-$(CONFIG_KERNEL_GZIP) := gz +suffix-$(CONFIG_KERNEL_BZIP2) := bz2 +suffix-$(CONFIG_KERNEL_LZMA) := lzma +suffix-$(CONFIG_KERNEL_XZ) := xz +suffix-$(CONFIG_KERNEL_LZO) := lzo +suffix-$(CONFIG_KERNEL_LZ4) := lz4 + +RUN_SIZE = $(shell $(OBJDUMP) -h vmlinux | \ + $(CONFIG_SHELL) $(srctree)/arch/x86/tools/calc_run_size.sh) +quiet_cmd_mkpiggy = MKPIGGY $@ + cmd_mkpiggy = $(obj)/mkpiggy $< $(RUN_SIZE) > $@ || ( rm -f $@ ; false ) + +targets += piggy.S +$(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE + $(call if_changed,mkpiggy) |