1# 2# linux/arch/x86/boot/compressed/Makefile 3# 4# create a compressed vmlinux image from the original vmlinux 5# 6 7targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma vmlinux.bin.xz vmlinux.bin.lzo 8 9KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2 10KBUILD_CFLAGS += -fno-strict-aliasing -fPIC 11KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING 12cflags-$(CONFIG_X86_32) := -march=i386 13cflags-$(CONFIG_X86_64) := -mcmodel=small 14KBUILD_CFLAGS += $(cflags-y) 15KBUILD_CFLAGS += $(call cc-option,-ffreestanding) 16KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) 17 18KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ 19GCOV_PROFILE := n 20 21LDFLAGS := -m elf_$(UTS_MACHINE) 22LDFLAGS_vmlinux := -T 23 24hostprogs-y := mkpiggy 25HOST_EXTRACFLAGS += -I$(srctree)/tools/include 26 27VMLINUX_OBJS = $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o \ 28 $(obj)/string.o $(obj)/cmdline.o $(obj)/early_serial_console.o \ 29 $(obj)/piggy.o 30 31$(obj)/eboot.o: KBUILD_CFLAGS += -fshort-wchar -mno-red-zone 32 33ifeq ($(CONFIG_EFI_STUB), y) 34 VMLINUX_OBJS += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o 35endif 36 37$(obj)/vmlinux: $(VMLINUX_OBJS) FORCE 38 $(call if_changed,ld) 39 @: 40 41OBJCOPYFLAGS_vmlinux.bin := -R .comment -S 42$(obj)/vmlinux.bin: vmlinux FORCE 43 $(call if_changed,objcopy) 44 45targets += $(patsubst $(obj)/%,%,$(VMLINUX_OBJS)) vmlinux.bin.all vmlinux.relocs 46 47CMD_RELOCS = arch/x86/tools/relocs 48quiet_cmd_relocs = RELOCS $@ 49 cmd_relocs = $(CMD_RELOCS) $< > $@;$(CMD_RELOCS) --abs-relocs $< 50$(obj)/vmlinux.relocs: vmlinux FORCE 51 $(call if_changed,relocs) 52 53vmlinux.bin.all-y := $(obj)/vmlinux.bin 54vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs 55 56$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE 57 $(call if_changed,gzip) 58$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE 59 $(call if_changed,bzip2) 60$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE 61 $(call if_changed,lzma) 62$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE 63 $(call if_changed,xzkern) 64$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE 65 $(call if_changed,lzo) 66 67suffix-$(CONFIG_KERNEL_GZIP) := gz 68suffix-$(CONFIG_KERNEL_BZIP2) := bz2 69suffix-$(CONFIG_KERNEL_LZMA) := lzma 70suffix-$(CONFIG_KERNEL_XZ) := xz 71suffix-$(CONFIG_KERNEL_LZO) := lzo 72 73quiet_cmd_mkpiggy = MKPIGGY $@ 74 cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false ) 75 76targets += piggy.S 77$(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE 78 $(call if_changed,mkpiggy) 79