arch/x86/boot/compressed/Makefile

   1 #
   2 # linux/arch/x86/boot/compressed/Makefile
   3 #
   4 # create a compressed vmlinux image from the original vmlinux
   5 #
   6
   7 targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma \
   8         vmlinux.bin.xz vmlinux.bin.lzo vmlinux.bin.lz4
   9
  10 KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
  11 KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
  12 KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
  13 cflags-$(CONFIG_X86_32) := -march=i386
  14 cflags-$(CONFIG_X86_64) := -mcmodel=small
  15 KBUILD_CFLAGS += $(cflags-y)
  16 KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
  17 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
  18
  19 KBUILD_AFLAGS  := $(KBUILD_CFLAGS) -D__ASSEMBLY__
  20 GCOV_PROFILE := n
  21
  22 LDFLAGS := -m elf_$(UTS_MACHINE)
  23 LDFLAGS_vmlinux := -T
  24
  25 hostprogs-y     := mkpiggy
  26 HOST_EXTRACFLAGS += -I$(srctree)/tools/include
  27
  28 VMLINUX_OBJS = $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o \
  29         $(obj)/string.o $(obj)/cmdline.o $(obj)/early_serial_console.o \
  30         $(obj)/piggy.o
  31
  32 $(obj)/eboot.o: KBUILD_CFLAGS += -fshort-wchar -mno-red-zone
  33
  34 ifeq ($(CONFIG_EFI_STUB), y)
  35         VMLINUX_OBJS += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o
  36 endif
  37
  38 $(obj)/vmlinux: $(VMLINUX_OBJS) FORCE
  39         $(call if_changed,ld)
  40         @:
  41
  42 OBJCOPYFLAGS_vmlinux.bin :=  -R .comment -S
  43 $(obj)/vmlinux.bin: vmlinux FORCE
  44         $(call if_changed,objcopy)
  45
  46 targets += $(patsubst $(obj)/%,%,$(VMLINUX_OBJS)) vmlinux.bin.all vmlinux.relocs
  47
  48 CMD_RELOCS = arch/x86/tools/relocs
  49 quiet_cmd_relocs = RELOCS  $@
  50       cmd_relocs = $(CMD_RELOCS) $< > $@;$(CMD_RELOCS) --abs-relocs $<
  51 $(obj)/vmlinux.relocs: vmlinux FORCE
  52         $(call if_changed,relocs)
  53
  54 vmlinux.bin.all-y := $(obj)/vmlinux.bin
  55 vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs
  56
  57 $(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
  58         $(call if_changed,gzip)
  59 $(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
  60         $(call if_changed,bzip2)
  61 $(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
  62         $(call if_changed,lzma)
  63 $(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
  64         $(call if_changed,xzkern)
  65 $(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
  66         $(call if_changed,lzo)
  67 $(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE
  68         $(call if_changed,lz4)
  69
  70 suffix-$(CONFIG_KERNEL_GZIP)    := gz
  71 suffix-$(CONFIG_KERNEL_BZIP2)   := bz2
  72 suffix-$(CONFIG_KERNEL_LZMA)    := lzma
  73 suffix-$(CONFIG_KERNEL_XZ)      := xz
  74 suffix-$(CONFIG_KERNEL_LZO)     := lzo
  75 suffix-$(CONFIG_KERNEL_LZ4)     := lz4
  76
  77 quiet_cmd_mkpiggy = MKPIGGY $@
  78       cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false )
  79
  80 targets += piggy.S
  81 $(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE
  82         $(call if_changed,mkpiggy)