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 19KASAN_SANITIZE := n 20 21targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma \ 22 vmlinux.bin.xz vmlinux.bin.lzo vmlinux.bin.lz4 23 24KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2 25KBUILD_CFLAGS += -fno-strict-aliasing -fPIC 26KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING 27cflags-$(CONFIG_X86_32) := -march=i386 28cflags-$(CONFIG_X86_64) := -mcmodel=small 29KBUILD_CFLAGS += $(cflags-y) 30KBUILD_CFLAGS += -mno-mmx -mno-sse 31KBUILD_CFLAGS += $(call cc-option,-ffreestanding) 32KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) 33 34KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ 35GCOV_PROFILE := n 36UBSAN_SANITIZE :=n 37 38LDFLAGS := -m elf_$(UTS_MACHINE) 39LDFLAGS_vmlinux := -T 40 41hostprogs-y := mkpiggy 42HOST_EXTRACFLAGS += -I$(srctree)/tools/include 43 44vmlinux-objs-y := $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o \ 45 $(obj)/string.o $(obj)/cmdline.o \ 46 $(obj)/piggy.o $(obj)/cpuflags.o 47 48vmlinux-objs-$(CONFIG_EARLY_PRINTK) += $(obj)/early_serial_console.o 49vmlinux-objs-$(CONFIG_RANDOMIZE_BASE) += $(obj)/aslr.o 50 51$(obj)/eboot.o: KBUILD_CFLAGS += -fshort-wchar -mno-red-zone 52 53vmlinux-objs-$(CONFIG_EFI_STUB) += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o \ 54 $(objtree)/drivers/firmware/efi/libstub/lib.a 55vmlinux-objs-$(CONFIG_EFI_MIXED) += $(obj)/efi_thunk_$(BITS).o 56 57$(obj)/vmlinux: $(vmlinux-objs-y) FORCE 58 $(call if_changed,ld) 59 @: 60 61OBJCOPYFLAGS_vmlinux.bin := -R .comment -S 62$(obj)/vmlinux.bin: vmlinux FORCE 63 $(call if_changed,objcopy) 64 65targets += $(patsubst $(obj)/%,%,$(vmlinux-objs-y)) vmlinux.bin.all vmlinux.relocs 66 67CMD_RELOCS = arch/x86/tools/relocs 68quiet_cmd_relocs = RELOCS $@ 69 cmd_relocs = $(CMD_RELOCS) $< > $@;$(CMD_RELOCS) --abs-relocs $< 70$(obj)/vmlinux.relocs: vmlinux FORCE 71 $(call if_changed,relocs) 72 73vmlinux.bin.all-y := $(obj)/vmlinux.bin 74vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs 75 76$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE 77 $(call if_changed,gzip) 78$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE 79 $(call if_changed,bzip2) 80$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE 81 $(call if_changed,lzma) 82$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE 83 $(call if_changed,xzkern) 84$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE 85 $(call if_changed,lzo) 86$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE 87 $(call if_changed,lz4) 88 89suffix-$(CONFIG_KERNEL_GZIP) := gz 90suffix-$(CONFIG_KERNEL_BZIP2) := bz2 91suffix-$(CONFIG_KERNEL_LZMA) := lzma 92suffix-$(CONFIG_KERNEL_XZ) := xz 93suffix-$(CONFIG_KERNEL_LZO) := lzo 94suffix-$(CONFIG_KERNEL_LZ4) := lz4 95 96RUN_SIZE = $(shell $(OBJDUMP) -h vmlinux | \ 97 $(CONFIG_SHELL) $(srctree)/arch/x86/tools/calc_run_size.sh) 98quiet_cmd_mkpiggy = MKPIGGY $@ 99 cmd_mkpiggy = $(obj)/mkpiggy $< $(RUN_SIZE) > $@ || ( rm -f $@ ; false ) 100 101targets += piggy.S 102$(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE 103 $(call if_changed,mkpiggy) 104