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.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma vmlinux.bin.xz vmlinux.bin.lzo head_$(BITS).o misc.o string.o cmdline.o early_serial_console.o piggy.o
   8
   9 KBUILD_CFLAGS := -m$(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)
  17
  18 KBUILD_AFLAGS  := $(KBUILD_CFLAGS) -D__ASSEMBLY__
  19 GCOV_PROFILE := n
  20
  21 LDFLAGS := -m elf_$(UTS_MACHINE)
  22 LDFLAGS_vmlinux := -T
  23
  24 hostprogs-y     := mkpiggy
  25 HOST_EXTRACFLAGS += -I$(srctree)/tools/include
  26
  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 \
  29         $(obj)/piggy.o
  30
  31 ifeq ($(CONFIG_EFI_STUB), y)
  32         VMLINUX_OBJS += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o
  33 endif
  34
  35 $(obj)/vmlinux: $(VMLINUX_OBJS) FORCE
  36         $(call if_changed,ld)
  37         @:
  38
  39 OBJCOPYFLAGS_vmlinux.bin :=  -R .comment -S
  40 $(obj)/vmlinux.bin: vmlinux FORCE
  41         $(call if_changed,objcopy)
  42
  43
  44 targets += vmlinux.bin.all vmlinux.relocs relocs
  45 hostprogs-$(CONFIG_X86_NEED_RELOCS) += relocs
  46
  47 quiet_cmd_relocs = RELOCS  $@
  48       cmd_relocs = $(obj)/relocs $< > $@;$(obj)/relocs --abs-relocs $<
  49 $(obj)/vmlinux.relocs: vmlinux $(obj)/relocs FORCE
  50         $(call if_changed,relocs)
  51
  52 vmlinux.bin.all-y := $(obj)/vmlinux.bin
  53 vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs
  54
  55 $(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
  56         $(call if_changed,gzip)
  57 $(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
  58         $(call if_changed,bzip2)
  59 $(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
  60         $(call if_changed,lzma)
  61 $(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
  62         $(call if_changed,xzkern)
  63 $(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
  64         $(call if_changed,lzo)
  65
  66 suffix-$(CONFIG_KERNEL_GZIP)    := gz
  67 suffix-$(CONFIG_KERNEL_BZIP2)   := bz2
  68 suffix-$(CONFIG_KERNEL_LZMA)    := lzma
  69 suffix-$(CONFIG_KERNEL_XZ)      := xz
  70 suffix-$(CONFIG_KERNEL_LZO)     := lzo
  71
  72 quiet_cmd_mkpiggy = MKPIGGY $@
  73       cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false )
  74
  75 targets += piggy.S
  76 $(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE
  77         $(call if_changed,mkpiggy)