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 20OBJECT_FILES_NON_STANDARD := y 21 22# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in. 23KCOV_INSTRUMENT := n 24 25targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma \ 26 vmlinux.bin.xz vmlinux.bin.lzo vmlinux.bin.lz4 27 28KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2 29KBUILD_CFLAGS += -fno-strict-aliasing -fPIC 30KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING 31cflags-$(CONFIG_X86_32) := -march=i386 32cflags-$(CONFIG_X86_64) := -mcmodel=small 33KBUILD_CFLAGS += $(cflags-y) 34KBUILD_CFLAGS += -mno-mmx -mno-sse 35KBUILD_CFLAGS += $(call cc-option,-ffreestanding) 36KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) 37 38KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ 39GCOV_PROFILE := n 40UBSAN_SANITIZE :=n 41 42LDFLAGS := -m elf_$(UTS_MACHINE) 43LDFLAGS_vmlinux := -T 44 45hostprogs-y := mkpiggy 46HOST_EXTRACFLAGS += -I$(srctree)/tools/include 47 48vmlinux-objs-y := $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o \ 49 $(obj)/string.o $(obj)/cmdline.o \ 50 $(obj)/piggy.o $(obj)/cpuflags.o 51 52vmlinux-objs-$(CONFIG_EARLY_PRINTK) += $(obj)/early_serial_console.o 53vmlinux-objs-$(CONFIG_RANDOMIZE_BASE) += $(obj)/aslr.o 54 55$(obj)/eboot.o: KBUILD_CFLAGS += -fshort-wchar -mno-red-zone 56 57vmlinux-objs-$(CONFIG_EFI_STUB) += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o \ 58 $(objtree)/drivers/firmware/efi/libstub/lib.a 59vmlinux-objs-$(CONFIG_EFI_MIXED) += $(obj)/efi_thunk_$(BITS).o 60 61$(obj)/vmlinux: $(vmlinux-objs-y) FORCE 62 $(call if_changed,ld) 63 @: 64 65OBJCOPYFLAGS_vmlinux.bin := -R .comment -S 66$(obj)/vmlinux.bin: vmlinux FORCE 67 $(call if_changed,objcopy) 68 69targets += $(patsubst $(obj)/%,%,$(vmlinux-objs-y)) vmlinux.bin.all vmlinux.relocs 70 71CMD_RELOCS = arch/x86/tools/relocs 72quiet_cmd_relocs = RELOCS $@ 73 cmd_relocs = $(CMD_RELOCS) $< > $@;$(CMD_RELOCS) --abs-relocs $< 74$(obj)/vmlinux.relocs: vmlinux FORCE 75 $(call if_changed,relocs) 76 77vmlinux.bin.all-y := $(obj)/vmlinux.bin 78vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs 79 80$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE 81 $(call if_changed,gzip) 82$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE 83 $(call if_changed,bzip2) 84$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE 85 $(call if_changed,lzma) 86$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE 87 $(call if_changed,xzkern) 88$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE 89 $(call if_changed,lzo) 90$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE 91 $(call if_changed,lz4) 92 93suffix-$(CONFIG_KERNEL_GZIP) := gz 94suffix-$(CONFIG_KERNEL_BZIP2) := bz2 95suffix-$(CONFIG_KERNEL_LZMA) := lzma 96suffix-$(CONFIG_KERNEL_XZ) := xz 97suffix-$(CONFIG_KERNEL_LZO) := lzo 98suffix-$(CONFIG_KERNEL_LZ4) := lz4 99 100RUN_SIZE = $(shell $(OBJDUMP) -h vmlinux | \ 101 $(CONFIG_SHELL) $(srctree)/arch/x86/tools/calc_run_size.sh) 102quiet_cmd_mkpiggy = MKPIGGY $@ 103 cmd_mkpiggy = $(obj)/mkpiggy $< $(RUN_SIZE) > $@ || ( rm -f $@ ; false ) 104 105targets += piggy.S 106$(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE 107 $(call if_changed,mkpiggy) 108