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 \ 8 vmlinux.bin.xz vmlinux.bin.lzo vmlinux.bin.lz4 9 10KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2 11KBUILD_CFLAGS += -fno-strict-aliasing -fPIC 12KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING 13cflags-$(CONFIG_X86_32) := -march=i386 14cflags-$(CONFIG_X86_64) := -mcmodel=small 15KBUILD_CFLAGS += $(cflags-y) 16KBUILD_CFLAGS += -mno-mmx -mno-sse 17KBUILD_CFLAGS += $(call cc-option,-ffreestanding) 18KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) 19 20KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ 21GCOV_PROFILE := n 22 23LDFLAGS := -m elf_$(UTS_MACHINE) 24LDFLAGS_vmlinux := -T 25 26hostprogs-y := mkpiggy 27HOST_EXTRACFLAGS += -I$(srctree)/tools/include 28 29vmlinux-objs-y := $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o \ 30 $(obj)/string.o $(obj)/cmdline.o \ 31 $(obj)/piggy.o $(obj)/cpuflags.o 32 33vmlinux-objs-$(CONFIG_EARLY_PRINTK) += $(obj)/early_serial_console.o 34vmlinux-objs-$(CONFIG_RANDOMIZE_BASE) += $(obj)/aslr.o 35 36$(obj)/eboot.o: KBUILD_CFLAGS += -fshort-wchar -mno-red-zone 37 38vmlinux-objs-$(CONFIG_EFI_STUB) += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o 39 40$(obj)/vmlinux: $(vmlinux-objs-y) FORCE 41 $(call if_changed,ld) 42 @: 43 44OBJCOPYFLAGS_vmlinux.bin := -R .comment -S 45$(obj)/vmlinux.bin: vmlinux FORCE 46 $(call if_changed,objcopy) 47 48targets += $(patsubst $(obj)/%,%,$(vmlinux-objs-y)) vmlinux.bin.all vmlinux.relocs 49 50CMD_RELOCS = arch/x86/tools/relocs 51quiet_cmd_relocs = RELOCS $@ 52 cmd_relocs = $(CMD_RELOCS) $< > $@;$(CMD_RELOCS) --abs-relocs $< 53$(obj)/vmlinux.relocs: vmlinux FORCE 54 $(call if_changed,relocs) 55 56vmlinux.bin.all-y := $(obj)/vmlinux.bin 57vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs 58 59$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE 60 $(call if_changed,gzip) 61$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE 62 $(call if_changed,bzip2) 63$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE 64 $(call if_changed,lzma) 65$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE 66 $(call if_changed,xzkern) 67$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE 68 $(call if_changed,lzo) 69$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE 70 $(call if_changed,lz4) 71 72suffix-$(CONFIG_KERNEL_GZIP) := gz 73suffix-$(CONFIG_KERNEL_BZIP2) := bz2 74suffix-$(CONFIG_KERNEL_LZMA) := lzma 75suffix-$(CONFIG_KERNEL_XZ) := xz 76suffix-$(CONFIG_KERNEL_LZO) := lzo 77suffix-$(CONFIG_KERNEL_LZ4) := lz4 78 79RUN_SIZE = $(shell objdump -h vmlinux | \ 80 perl $(srctree)/arch/x86/tools/calc_run_size.pl) 81quiet_cmd_mkpiggy = MKPIGGY $@ 82 cmd_mkpiggy = $(obj)/mkpiggy $< $(RUN_SIZE) > $@ || ( rm -f $@ ; false ) 83 84targets += piggy.S 85$(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE 86 $(call if_changed,mkpiggy) 87