arch/x86/boot/Makefile

   1 #
   2 # arch/x86/boot/Makefile
   3 #
   4 # This file is subject to the terms and conditions of the GNU General Public
   5 # License.  See the file "COPYING" in the main directory of this archive
   6 # for more details.
   7 #
   8 # Copyright (C) 1994 by Linus Torvalds
   9 # Changed by many, many contributors over the years.
  10 #
  11
  12 # If you want to preset the SVGA mode, uncomment the next line and
  13 # set SVGA_MODE to whatever number you want.
  14 # Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
  15 # The number is the same as you would ordinarily press at bootup.
  16
  17 SVGA_MODE       := -DSVGA_MODE=NORMAL_VGA
  18
  19 targets         := vmlinux.bin setup.bin setup.elf bzImage
  20 targets         += fdimage fdimage144 fdimage288 image.iso hdimage
  21 subdir-         := compressed
  22
  23 setup-y         += a20.o bioscall.o cmdline.o copy.o cpu.o cpuflags.o cpucheck.o
  24 setup-y         += early_serial_console.o edd.o header.o main.o memory.o
  25 setup-y         += pm.o pmjump.o printf.o regs.o string.o tty.o video.o
  26 setup-y         += video-mode.o version.o
  27 setup-$(CONFIG_X86_APM_BOOT) += apm.o
  28
  29 # The link order of the video-*.o modules can matter.  In particular,
  30 # video-vga.o *must* be listed first, followed by video-vesa.o.
  31 # Hardware-specific drivers should follow in the order they should be
  32 # probed, and video-bios.o should typically be last.
  33 setup-y         += video-vga.o
  34 setup-y         += video-vesa.o
  35 setup-y         += video-bios.o
  36
  37 targets         += $(setup-y)
  38 hostprogs       := tools/build
  39 hostprogs       += mkcpustr
  40
  41 HOST_EXTRACFLAGS += -I$(srctree)/tools/include \
  42                     -include include/generated/autoconf.h \
  43                     -D__EXPORTED_HEADERS__
  44
  45 $(obj)/cpu.o: $(obj)/cpustr.h
  46
  47 quiet_cmd_cpustr = CPUSTR  $@
  48       cmd_cpustr = $(obj)/mkcpustr > $@
  49 $(obj)/cpustr.h: $(obj)/mkcpustr FORCE
  50         $(call if_changed,cpustr)
  51 targets += cpustr.h
  52
  53 # ---------------------------------------------------------------------------
  54
  55 KBUILD_CFLAGS   := $(REALMODE_CFLAGS) -D_SETUP
  56 KBUILD_AFLAGS   := $(KBUILD_CFLAGS) -D__ASSEMBLY__
  57 KBUILD_CFLAGS   += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
  58 KBUILD_CFLAGS   += -fno-asynchronous-unwind-tables
  59 KBUILD_CFLAGS   += $(CONFIG_CC_IMPLICIT_FALLTHROUGH)
  60
  61 $(obj)/bzImage: asflags-y  := $(SVGA_MODE)
  62
  63 quiet_cmd_image = BUILD   $@
  64 silent_redirect_image = >/dev/null
  65 cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
  66                                $(obj)/zoffset.h $@ $($(quiet)redirect_image)
  67
  68 $(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
  69         $(call if_changed,image)
  70         @$(kecho) 'Kernel: $@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),`cat .version`)')'
  71
  72 OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
  73 $(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
  74         $(call if_changed,objcopy)
  75
  76 SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
  77
  78 sed-zoffset := -e 's/^\([0-9a-fA-F]*\) [a-zA-Z] \(startup_32\|efi.._stub_entry\|efi\(32\)\?_pe_entry\|input_data\|kernel_info\|_end\|_ehead\|_text\|_e\?data\|z_.*\)$$/\#define ZO_\2 0x\1/p'
  79
  80 quiet_cmd_zoffset = ZOFFSET $@
  81       cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@
  82
  83 targets += zoffset.h
  84 $(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE
  85         $(call if_changed,zoffset)
  86
  87
  88 AFLAGS_header.o += -I$(objtree)/$(obj)
  89 $(obj)/header.o: $(obj)/zoffset.h
  90
  91 LDFLAGS_setup.elf       := -m elf_i386 -z noexecstack -T
  92 $(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
  93         $(call if_changed,ld)
  94
  95 OBJCOPYFLAGS_setup.bin  := -O binary
  96 $(obj)/setup.bin: $(obj)/setup.elf FORCE
  97         $(call if_changed,objcopy)
  98
  99 $(obj)/compressed/vmlinux: FORCE
 100         $(Q)$(MAKE) $(build)=$(obj)/compressed $@
 101
 102 # Set this if you want to pass append arguments to the
 103 # bzdisk/fdimage/hdimage/isoimage kernel
 104 FDARGS =
 105 # Set this if you want one or more initrds included in the image
 106 FDINITRD =
 107
 108 imgdeps = $(obj)/bzImage $(obj)/mtools.conf $(src)/genimage.sh
 109
 110 $(obj)/mtools.conf: $(src)/mtools.conf.in
 111         sed -e 's|@OBJ@|$(obj)|g' < $< > $@
 112
 113 targets += mtools.conf
 114
 115 # genimage.sh requires bash, but it also has a bunch of other
 116 # external dependencies.
 117 quiet_cmd_genimage = GENIMAGE $3
 118       cmd_genimage = $(BASH) $(src)/genimage.sh $2 $3 $(obj)/bzImage \
 119                 $(obj)/mtools.conf '$(FDARGS)' $(FDINITRD)
 120
 121 PHONY += bzdisk fdimage fdimage144 fdimage288 hdimage isoimage
 122
 123 # This requires write access to /dev/fd0
 124 # All images require syslinux to be installed; hdimage also requires
 125 # EDK2/OVMF if the kernel is compiled with the EFI stub.
 126 bzdisk: $(imgdeps)
 127         $(call cmd,genimage,bzdisk,/dev/fd0)
 128
 129 fdimage fdimage144: $(imgdeps)
 130         $(call cmd,genimage,fdimage144,$(obj)/fdimage)
 131         @$(kecho) 'Kernel: $(obj)/fdimage is ready'
 132
 133 fdimage288: $(imgdeps)
 134         $(call cmd,genimage,fdimage288,$(obj)/fdimage)
 135         @$(kecho) 'Kernel: $(obj)/fdimage is ready'
 136
 137 hdimage: $(imgdeps)
 138         $(call cmd,genimage,hdimage,$(obj)/hdimage)
 139         @$(kecho) 'Kernel: $(obj)/hdimage is ready'
 140
 141 isoimage: $(imgdeps)
 142         $(call cmd,genimage,isoimage,$(obj)/image.iso)
 143         @$(kecho) 'Kernel: $(obj)/image.iso is ready'