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-y := $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o \
  30         $(obj)/string.o $(obj)/cmdline.o \
  31         $(obj)/piggy.o $(obj)/cpuflags.o
  32
  33 vmlinux-objs-$(CONFIG_EARLY_PRINTK) += $(obj)/early_serial_console.o
  34 vmlinux-objs-$(CONFIG_RANDOMIZE_BASE) += $(obj)/aslr.o
  35
  36 $(obj)/eboot.o: KBUILD_CFLAGS += -fshort-wchar -mno-red-zone
  37
  38 vmlinux-objs-$(CONFIG_EFI_STUB) += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o
  39
  40 $(obj)/vmlinux: $(vmlinux-objs-y) FORCE
  41         $(call if_changed,ld)
  42         @:
  43
  44 OBJCOPYFLAGS_vmlinux.bin :=  -R .comment -S
  45 $(obj)/vmlinux.bin: vmlinux FORCE
  46         $(call if_changed,objcopy)
  47
  48 targets += $(patsubst $(obj)/%,%,$(vmlinux-objs-y)) vmlinux.bin.all vmlinux.relocs
  49
  50 CMD_RELOCS = arch/x86/tools/relocs
  51 quiet_cmd_relocs = RELOCS  $@
  52       cmd_relocs = $(CMD_RELOCS) $< > $@;$(CMD_RELOCS) --abs-relocs $<
  53 $(obj)/vmlinux.relocs: vmlinux FORCE
  54         $(call if_changed,relocs)
  55
  56 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)
  65 $(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
  66         $(call if_changed,xzkern)
  67 $(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
  68         $(call if_changed,lzo)
  69 $(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE
  70         $(call if_changed,lz4)
  71
  72 suffix-$(CONFIG_KERNEL_GZIP)    := gz
  73 suffix-$(CONFIG_KERNEL_BZIP2)   := bz2
  74 suffix-$(CONFIG_KERNEL_LZMA)    := lzma
  75 suffix-$(CONFIG_KERNEL_XZ)      := xz
  76 suffix-$(CONFIG_KERNEL_LZO)     := lzo
  77 suffix-$(CONFIG_KERNEL_LZ4)     := lz4
  78
  79 RUN_SIZE = $(shell objdump -h vmlinux | \
  80              perl $(srctree)/arch/x86/tools/calc_run_size.pl)
  81 quiet_cmd_mkpiggy = MKPIGGY $@
  82       cmd_mkpiggy = $(obj)/mkpiggy $< $(RUN_SIZE) > $@ || ( rm -f $@ ; false )
  83
  84 targets += piggy.S
  85 $(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE
  86         $(call if_changed,mkpiggy)