xref: /openbmc/linux/arch/x86/boot/compressed/Makefile (revision b6dcefde) 
1#
2# linux/arch/x86/boot/compressed/Makefile
3#
4# create a compressed vmlinux image from the original vmlinux
5#
6
7targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma vmlinux.bin.lzo head_$(BITS).o misc.o piggy.o
8
9KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
10KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
11KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
12cflags-$(CONFIG_X86_32) := -march=i386
13cflags-$(CONFIG_X86_64) := -mcmodel=small
14KBUILD_CFLAGS += $(cflags-y)
15KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
16KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
17
18KBUILD_AFLAGS  := $(KBUILD_CFLAGS) -D__ASSEMBLY__
19GCOV_PROFILE := n
20
21LDFLAGS := -m elf_$(UTS_MACHINE)
22LDFLAGS_vmlinux := -T
23
24hostprogs-y	:= mkpiggy
25
26$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o $(obj)/piggy.o FORCE
27	$(call if_changed,ld)
28	@:
29
30OBJCOPYFLAGS_vmlinux.bin :=  -R .comment -S
31$(obj)/vmlinux.bin: vmlinux FORCE
32	$(call if_changed,objcopy)
33
34
35targets += vmlinux.bin.all vmlinux.relocs relocs
36hostprogs-$(CONFIG_X86_NEED_RELOCS) += relocs
37
38quiet_cmd_relocs = RELOCS  $@
39      cmd_relocs = $(obj)/relocs $< > $@;$(obj)/relocs --abs-relocs $<
40$(obj)/vmlinux.relocs: vmlinux $(obj)/relocs FORCE
41	$(call if_changed,relocs)
42
43vmlinux.bin.all-y := $(obj)/vmlinux.bin
44vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs
45
46$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
47	$(call if_changed,gzip)
48$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
49	$(call if_changed,bzip2)
50$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
51	$(call if_changed,lzma)
52$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
53	$(call if_changed,lzo)
54
55suffix-$(CONFIG_KERNEL_GZIP)	:= gz
56suffix-$(CONFIG_KERNEL_BZIP2)	:= bz2
57suffix-$(CONFIG_KERNEL_LZMA)	:= lzma
58suffix-$(CONFIG_KERNEL_LZO) 	:= lzo
59
60quiet_cmd_mkpiggy = MKPIGGY $@
61      cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false )
62
63targets += piggy.S
64$(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE
65	$(call if_changed,mkpiggy)
66