2 # linux/arch/x86/boot/compressed/Makefile
4 # create a compressed vmlinux image from the original vmlinux
7 targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma vmlinux.bin.xz vmlinux.bin.lzo
9 KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
10 KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
11 KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
12 cflags-$(CONFIG_X86_32) := -march=i386
13 cflags-$(CONFIG_X86_64) := -mcmodel=small
14 KBUILD_CFLAGS += $(cflags-y)
15 KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
16 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
18 KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
21 LDFLAGS := -m elf_$(UTS_MACHINE)
24 hostprogs-y := mkpiggy
25 HOST_EXTRACFLAGS += -I$(srctree)/tools/include
27 VMLINUX_OBJS = $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o \
28 $(obj)/string.o $(obj)/cmdline.o $(obj)/early_serial_console.o \
31 $(obj)/eboot.o: KBUILD_CFLAGS += -fshort-wchar -mno-red-zone
33 ifeq ($(CONFIG_EFI_STUB), y)
34 VMLINUX_OBJS += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o
37 $(obj)/vmlinux: $(VMLINUX_OBJS) FORCE
41 OBJCOPYFLAGS_vmlinux.bin := -R .comment -S
42 $(obj)/vmlinux.bin: vmlinux FORCE
43 $(call if_changed,objcopy)
45 targets += $(patsubst $(obj)/%,%,$(VMLINUX_OBJS)) vmlinux.bin.all vmlinux.relocs
47 CMD_RELOCS = arch/x86/tools/relocs
48 quiet_cmd_relocs = RELOCS $@
49 cmd_relocs = $(CMD_RELOCS) $< > $@;$(CMD_RELOCS) --abs-relocs $<
50 $(obj)/vmlinux.relocs: vmlinux FORCE
51 $(call if_changed,relocs)
53 vmlinux.bin.all-y := $(obj)/vmlinux.bin
54 vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs
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 $(call if_changed,lzo)
67 suffix-$(CONFIG_KERNEL_GZIP) := gz
68 suffix-$(CONFIG_KERNEL_BZIP2) := bz2
69 suffix-$(CONFIG_KERNEL_LZMA) := lzma
70 suffix-$(CONFIG_KERNEL_XZ) := xz
71 suffix-$(CONFIG_KERNEL_LZO) := lzo
73 quiet_cmd_mkpiggy = MKPIGGY $@
74 cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false )
77 $(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE
78 $(call if_changed,mkpiggy)