Makefile 2.6 KB
Newer Older
1 2 3 4 5 6
#
# linux/arch/x86/boot/compressed/Makefile
#
# create a compressed vmlinux image from the original vmlinux
#

7 8
targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma \
	vmlinux.bin.xz vmlinux.bin.lzo vmlinux.bin.lz4
9 10 11

KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
12
KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
13
cflags-$(CONFIG_X86_32) := -march=i386
14 15
cflags-$(CONFIG_X86_64) := -mcmodel=small
KBUILD_CFLAGS += $(cflags-y)
16
KBUILD_CFLAGS += -mno-mmx -mno-sse
17 18 19 20
KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)

KBUILD_AFLAGS  := $(KBUILD_CFLAGS) -D__ASSEMBLY__
21
GCOV_PROFILE := n
22 23 24 25

LDFLAGS := -m elf_$(UTS_MACHINE)
LDFLAGS_vmlinux := -T

26
hostprogs-y	:= mkpiggy
27
HOST_EXTRACFLAGS += -I$(srctree)/tools/include
28

M
Matt Fleming 已提交
29 30
VMLINUX_OBJS = $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o \
	$(obj)/string.o $(obj)/cmdline.o $(obj)/early_serial_console.o \
31
	$(obj)/piggy.o $(obj)/cpuflags.o $(obj)/aslr.o
M
Matt Fleming 已提交
32

33 34
$(obj)/eboot.o: KBUILD_CFLAGS += -fshort-wchar -mno-red-zone

M
Matt Fleming 已提交
35
ifeq ($(CONFIG_EFI_STUB), y)
36 37
	VMLINUX_OBJS += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o \
				$(objtree)/drivers/firmware/efi/libstub/lib.a
M
Matt Fleming 已提交
38 39 40
endif

$(obj)/vmlinux: $(VMLINUX_OBJS) FORCE
41 42 43
	$(call if_changed,ld)
	@:

44
OBJCOPYFLAGS_vmlinux.bin :=  -R .comment -S
45 46 47
$(obj)/vmlinux.bin: vmlinux FORCE
	$(call if_changed,objcopy)

48
targets += $(patsubst $(obj)/%,%,$(VMLINUX_OBJS)) vmlinux.bin.all vmlinux.relocs
49

50
CMD_RELOCS = arch/x86/tools/relocs
51
quiet_cmd_relocs = RELOCS  $@
52 53
      cmd_relocs = $(CMD_RELOCS) $< > $@;$(CMD_RELOCS) --abs-relocs $<
$(obj)/vmlinux.relocs: vmlinux FORCE
54 55 56
	$(call if_changed,relocs)

vmlinux.bin.all-y := $(obj)/vmlinux.bin
57
vmlinux.bin.all-$(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)
L
Lasse Collin 已提交
65 66
$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
	$(call if_changed,xzkern)
67 68
$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
	$(call if_changed,lzo)
69 70
$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE
	$(call if_changed,lz4)
71

72 73 74
suffix-$(CONFIG_KERNEL_GZIP)	:= gz
suffix-$(CONFIG_KERNEL_BZIP2)	:= bz2
suffix-$(CONFIG_KERNEL_LZMA)	:= lzma
L
Lasse Collin 已提交
75
suffix-$(CONFIG_KERNEL_XZ)	:= xz
76
suffix-$(CONFIG_KERNEL_LZO) 	:= lzo
77
suffix-$(CONFIG_KERNEL_LZ4) 	:= lz4
78

79 80 81 82 83 84
quiet_cmd_mkpiggy = MKPIGGY $@
      cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false )

targets += piggy.S
$(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE
	$(call if_changed,mkpiggy)