diff options
Diffstat (limited to 'arch/x86/boot/compressed/Makefile')
| -rw-r--r-- | arch/x86/boot/compressed/Makefile | 62 |
1 files changed, 60 insertions, 2 deletions
diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile index 52c1db85452..fe24ceabd90 100644 --- a/arch/x86/boot/compressed/Makefile +++ b/arch/x86/boot/compressed/Makefile @@ -1,5 +1,63 @@ +# +# linux/arch/x86/boot/compressed/Makefile +# +# create a compressed vmlinux image from the original vmlinux +# + +targets := vmlinux vmlinux.bin vmlinux.bin.gz head_$(BITS).o misc.o piggy.o + +KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2 +KBUILD_CFLAGS += -fno-strict-aliasing -fPIC +cflags-$(CONFIG_X86_64) := -mcmodel=small +KBUILD_CFLAGS += $(cflags-y) +KBUILD_CFLAGS += $(call cc-option,-ffreestanding) +KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) + +KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ + +LDFLAGS := -m elf_$(UTS_MACHINE) +LDFLAGS_vmlinux := -T + +$(obj)/vmlinux: $(src)/vmlinux_$(BITS).lds $(obj)/head_$(BITS).o $(obj)/misc.o $(obj)/piggy.o FORCE + $(call if_changed,ld) + @: + +$(obj)/vmlinux.bin: vmlinux FORCE + $(call if_changed,objcopy) + + ifeq ($(CONFIG_X86_32),y) -include ${srctree}/arch/x86/boot/compressed/Makefile_32 +targets += vmlinux.bin.all vmlinux.relocs +hostprogs-y := relocs + +quiet_cmd_relocs = RELOCS $@ + cmd_relocs = $(obj)/relocs $< > $@;$(obj)/relocs --abs-relocs $< +$(obj)/vmlinux.relocs: vmlinux $(obj)/relocs FORCE + $(call if_changed,relocs) + +vmlinux.bin.all-y := $(obj)/vmlinux.bin +vmlinux.bin.all-$(CONFIG_RELOCATABLE) += $(obj)/vmlinux.relocs +quiet_cmd_relocbin = BUILD $@ + cmd_relocbin = cat $(filter-out FORCE,$^) > $@ +$(obj)/vmlinux.bin.all: $(vmlinux.bin.all-y) FORCE + $(call if_changed,relocbin) + +ifdef CONFIG_RELOCATABLE +$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin.all FORCE + $(call if_changed,gzip) else -include ${srctree}/arch/x86/boot/compressed/Makefile_64 +$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE + $(call if_changed,gzip) endif +LDFLAGS_piggy.o := -r --format binary --oformat elf32-i386 -T + +else +$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE + $(call if_changed,gzip) + +LDFLAGS_piggy.o := -r --format binary --oformat elf64-x86-64 -T +endif + + +$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE + $(call if_changed,ld) |