1# 2# linux/arch/x86/boot/compressed/Makefile 3# 4# create a compressed vmlinux image from the original vmlinux 5# 6# vmlinuz is: 7# decompression code (*.o) 8# asm globals (piggy.S), including: 9# vmlinux.bin.(gz|bz2|lzma|...) 10# 11# vmlinux.bin is: 12# vmlinux stripped of debugging and comments 13# vmlinux.bin.all is: 14# vmlinux.bin + vmlinux.relocs 15# vmlinux.bin.(gz|bz2|lzma|...) is: 16# (see scripts/Makefile.lib size_append) 17# compressed vmlinux.bin.all + u32 size of vmlinux.bin.all 18 19targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma \ 20 vmlinux.bin.xz vmlinux.bin.lzo vmlinux.bin.lz4 21 22KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2 23KBUILD_CFLAGS += -fno-strict-aliasing -fPIC 24KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING 25cflags-$(CONFIG_X86_32) := -march=i386 26cflags-$(CONFIG_X86_64) := -mcmodel=small 27KBUILD_CFLAGS += $(cflags-y) 28KBUILD_CFLAGS += -mno-mmx -mno-sse 29KBUILD_CFLAGS += $(call cc-option,-ffreestanding) 30KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) 31 32KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ 33GCOV_PROFILE := n 34 35LDFLAGS := -m elf_$(UTS_MACHINE) 36LDFLAGS_vmlinux := -T 37 38hostprogs-y := mkpiggy 39HOST_EXTRACFLAGS += -I$(srctree)/tools/include 40 41vmlinux-objs-y := $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o \ 42 $(obj)/string.o $(obj)/cmdline.o \ 43 $(obj)/piggy.o $(obj)/cpuflags.o 44 45vmlinux-objs-$(CONFIG_EARLY_PRINTK) += $(obj)/early_serial_console.o 46vmlinux-objs-$(CONFIG_RANDOMIZE_BASE) += $(obj)/aslr.o 47 48$(obj)/eboot.o: KBUILD_CFLAGS += -fshort-wchar -mno-red-zone 49 50vmlinux-objs-$(CONFIG_EFI_STUB) += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o \ 51 $(objtree)/drivers/firmware/efi/libstub/lib.a 52 53$(obj)/vmlinux: $(vmlinux-objs-y) FORCE 54 $(call if_changed,ld) 55 @: 56 57OBJCOPYFLAGS_vmlinux.bin := -R .comment -S 58$(obj)/vmlinux.bin: vmlinux FORCE 59 $(call if_changed,objcopy) 60 61targets += $(patsubst $(obj)/%,%,$(vmlinux-objs-y)) vmlinux.bin.all vmlinux.relocs 62 63CMD_RELOCS = arch/x86/tools/relocs 64quiet_cmd_relocs = RELOCS $@ 65 cmd_relocs = $(CMD_RELOCS) $< > $@;$(CMD_RELOCS) --abs-relocs $< 66$(obj)/vmlinux.relocs: vmlinux FORCE 67 $(call if_changed,relocs) 68 69vmlinux.bin.all-y := $(obj)/vmlinux.bin 70vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs 71 72$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE 73 $(call if_changed,gzip) 74$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE 75 $(call if_changed,bzip2) 76$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE 77 $(call if_changed,lzma) 78$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE 79 $(call if_changed,xzkern) 80$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE 81 $(call if_changed,lzo) 82$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE 83 $(call if_changed,lz4) 84 85suffix-$(CONFIG_KERNEL_GZIP) := gz 86suffix-$(CONFIG_KERNEL_BZIP2) := bz2 87suffix-$(CONFIG_KERNEL_LZMA) := lzma 88suffix-$(CONFIG_KERNEL_XZ) := xz 89suffix-$(CONFIG_KERNEL_LZO) := lzo 90suffix-$(CONFIG_KERNEL_LZ4) := lz4 91 92RUN_SIZE = $(shell $(OBJDUMP) -h vmlinux | \ 93 perl $(srctree)/arch/x86/tools/calc_run_size.pl) 94quiet_cmd_mkpiggy = MKPIGGY $@ 95 cmd_mkpiggy = $(obj)/mkpiggy $< $(RUN_SIZE) > $@ || ( rm -f $@ ; false ) 96 97targets += piggy.S 98$(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE 99 $(call if_changed,mkpiggy) 100