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 += -mno-mmx -mno-sse
  17 KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
  18 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
  19
  20 KBUILD_AFLAGS  := $(KBUILD_CFLAGS) -D__ASSEMBLY__
  21 GCOV_PROFILE := n
  22
  23 LDFLAGS := -m elf_$(UTS_MACHINE)
  24 LDFLAGS_vmlinux := -T
  25
  26 hostprogs-y     := mkpiggy
  27 HOST_EXTRACFLAGS += -I$(srctree)/tools/include
  28
  29 VMLINUX_OBJS = $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o \
  30         $(obj)/string.o $(obj)/cmdline.o $(obj)/early_serial_console.o \
  31         $(obj)/piggy.o $(obj)/cpuflags.o $(obj)/aslr.o
  32
  33 $(obj)/eboot.o: KBUILD_CFLAGS += -fshort-wchar -mno-red-zone
  34
  35 ifeq ($(CONFIG_EFI_STUB), y)
  36         VMLINUX_OBJS += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o
  37 endif
  38
  39 $(obj)/vmlinux: $(VMLINUX_OBJS) FORCE
  40         $(call if_changed,ld)
  41         @:
  42
  43 OBJCOPYFLAGS_vmlinux.bin :=  -R .comment -S
  44 $(obj)/vmlinux.bin: vmlinux FORCE
  45         $(call if_changed,objcopy)
  46
  47 targets += $(patsubst $(obj)/%,%,$(VMLINUX_OBJS)) vmlinux.bin.all vmlinux.relocs
  48
  49 CMD_RELOCS = arch/x86/tools/relocs
  50 quiet_cmd_relocs = RELOCS  $@
  51       cmd_relocs = $(CMD_RELOCS) $< > $@;$(CMD_RELOCS) --abs-relocs $<
  52 $(obj)/vmlinux.relocs: vmlinux FORCE
  53         $(call if_changed,relocs)
  54
  55 vmlinux.bin.all-y := $(obj)/vmlinux.bin
  56 vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs
  57
  58 $(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
  59         $(call if_changed,gzip)
  60 $(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
  61         $(call if_changed,bzip2)
  62 $(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
  63         $(call if_changed,lzma)
  64 $(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
  65         $(call if_changed,xzkern)
  66 $(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
  67         $(call if_changed,lzo)
  68 $(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE
  69         $(call if_changed,lz4)
  70
  71 suffix-$(CONFIG_KERNEL_GZIP)    := gz
  72 suffix-$(CONFIG_KERNEL_BZIP2)   := bz2
  73 suffix-$(CONFIG_KERNEL_LZMA)    := lzma
  74 suffix-$(CONFIG_KERNEL_XZ)      := xz
  75 suffix-$(CONFIG_KERNEL_LZO)     := lzo
  76 suffix-$(CONFIG_KERNEL_LZ4)     := lz4
  77
  78 quiet_cmd_mkpiggy = MKPIGGY $@
  79       cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false )
  80
  81 targets += piggy.S
  82 $(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE
  83         $(call if_changed,mkpiggy)