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 # ROOT_DEV specifies the default root-device when making the image.
  13 # This can be either FLOPPY, CURRENT, /dev/xxxx or empty, in which case
  14 # the default of FLOPPY is used by 'build'.
  15
  16 ROOT_DEV        := CURRENT
  17
  18 # If you want to preset the SVGA mode, uncomment the next line and
  19 # set SVGA_MODE to whatever number you want.
  20 # Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
  21 # The number is the same as you would ordinarily press at bootup.
  22
  23 SVGA_MODE       := -DSVGA_MODE=NORMAL_VGA
  24
  25 targets         := vmlinux.bin setup.bin setup.elf bzImage
  26 targets         += fdimage fdimage144 fdimage288 image.iso mtools.conf
  27 subdir-         := compressed
  28
  29 setup-y         += a20.o bioscall.o cmdline.o copy.o cpu.o cpucheck.o edd.o
  30 setup-y         += header.o main.o mca.o memory.o pm.o pmjump.o
  31 setup-y         += printf.o regs.o string.o tty.o video.o video-mode.o
  32 setup-y         += version.o
  33 setup-$(CONFIG_X86_APM_BOOT) += apm.o
  34
  35 # The link order of the video-*.o modules can matter.  In particular,
  36 # video-vga.o *must* be listed first, followed by video-vesa.o.
  37 # Hardware-specific drivers should follow in the order they should be
  38 # probed, and video-bios.o should typically be last.
  39 setup-y         += video-vga.o
  40 setup-y         += video-vesa.o
  41 setup-y         += video-bios.o
  42
  43 targets         += $(setup-y)
  44 hostprogs-y     := mkcpustr tools/build
  45
  46 HOST_EXTRACFLAGS += $(LINUXINCLUDE)
  47
  48 $(obj)/cpu.o: $(obj)/cpustr.h
  49
  50 quiet_cmd_cpustr = CPUSTR  $@
  51       cmd_cpustr = $(obj)/mkcpustr > $@
  52 targets         += cpustr.h
  53 $(obj)/cpustr.h: $(obj)/mkcpustr FORCE
  54         $(call if_changed,cpustr)
  55
  56 # ---------------------------------------------------------------------------
  57
  58 # How to compile the 16-bit code.  Note we always compile for -march=i386,
  59 # that way we can complain to the user if the CPU is insufficient.
  60 KBUILD_CFLAGS   := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
  61                    -DDISABLE_BRANCH_PROFILING \
  62                    -Wall -Wstrict-prototypes \
  63                    -march=i386 -mregparm=3 \
  64                    -include $(srctree)/$(src)/code16gcc.h \
  65                    -fno-strict-aliasing -fomit-frame-pointer \
  66                    $(call cc-option, -ffreestanding) \
  67                    $(call cc-option, -fno-toplevel-reorder,\
  68                         $(call cc-option, -fno-unit-at-a-time)) \
  69                    $(call cc-option, -fno-stack-protector) \
  70                    $(call cc-option, -mpreferred-stack-boundary=2)
  71 KBUILD_CFLAGS   += $(call cc-option, -m32)
  72 KBUILD_AFLAGS   := $(KBUILD_CFLAGS) -D__ASSEMBLY__
  73
  74 $(obj)/bzImage: asflags-y  := $(SVGA_MODE)
  75
  76 quiet_cmd_image = BUILD   $@
  77 cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
  78         $(ROOT_DEV) > $@
  79
  80 $(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
  81         $(call if_changed,image)
  82         @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
  83
  84 OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
  85 $(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
  86         $(call if_changed,objcopy)
  87
  88 SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
  89
  90 sed-voffset := -e 's/^\([0-9a-fA-F]*\) . \(_text\|_end\)$$/\#define VO_\2 0x\1/p'
  91
  92 quiet_cmd_voffset = VOFFSET $@
  93       cmd_voffset = $(NM) $< | sed -n $(sed-voffset) > $@
  94
  95 targets += voffset.h
  96 $(obj)/voffset.h: vmlinux FORCE
  97         $(call if_changed,voffset)
  98
  99 sed-zoffset := -e 's/^\([0-9a-fA-F]*\) . \(startup_32\|input_data\|_end\|z_.*\)$$/\#define ZO_\2 0x\1/p'
 100
 101 quiet_cmd_zoffset = ZOFFSET $@
 102       cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@
 103
 104 targets += zoffset.h
 105 $(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE
 106         $(call if_changed,zoffset)
 107
 108
 109 AFLAGS_header.o += -I$(obj)
 110 $(obj)/header.o: $(obj)/voffset.h $(obj)/zoffset.h
 111
 112 LDFLAGS_setup.elf       := -T
 113 $(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
 114         $(call if_changed,ld)
 115
 116 OBJCOPYFLAGS_setup.bin  := -O binary
 117 $(obj)/setup.bin: $(obj)/setup.elf FORCE
 118         $(call if_changed,objcopy)
 119
 120 $(obj)/compressed/vmlinux: FORCE
 121         $(Q)$(MAKE) $(build)=$(obj)/compressed $@
 122
 123 # Set this if you want to pass append arguments to the
 124 # bzdisk/fdimage/isoimage kernel
 125 FDARGS =
 126 # Set this if you want an initrd included with the
 127 # bzdisk/fdimage/isoimage kernel
 128 FDINITRD =
 129
 130 image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,)
 131
 132 $(obj)/mtools.conf: $(src)/mtools.conf.in
 133         sed -e 's|@OBJ@|$(obj)|g' < $< > $@
 134
 135 # This requires write access to /dev/fd0
 136 bzdisk: $(obj)/bzImage $(obj)/mtools.conf
 137         MTOOLSRC=$(obj)/mtools.conf mformat a:                  ; sync
 138         syslinux /dev/fd0                                       ; sync
 139         echo '$(image_cmdline)' | \
 140                 MTOOLSRC=$(src)/mtools.conf mcopy - a:syslinux.cfg
 141         if [ -f '$(FDINITRD)' ] ; then \
 142                 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' a:initrd.img ; \
 143         fi
 144         MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage a:linux        ; sync
 145
 146 # These require being root or having syslinux 2.02 or higher installed
 147 fdimage fdimage144: $(obj)/bzImage $(obj)/mtools.conf
 148         dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440
 149         MTOOLSRC=$(obj)/mtools.conf mformat v:                  ; sync
 150         syslinux $(obj)/fdimage                                 ; sync
 151         echo '$(image_cmdline)' | \
 152                 MTOOLSRC=$(obj)/mtools.conf mcopy - v:syslinux.cfg
 153         if [ -f '$(FDINITRD)' ] ; then \
 154                 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' v:initrd.img ; \
 155         fi
 156         MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage v:linux        ; sync
 157
 158 fdimage288: $(obj)/bzImage $(obj)/mtools.conf
 159         dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880
 160         MTOOLSRC=$(obj)/mtools.conf mformat w:                  ; sync
 161         syslinux $(obj)/fdimage                                 ; sync
 162         echo '$(image_cmdline)' | \
 163                 MTOOLSRC=$(obj)/mtools.conf mcopy - w:syslinux.cfg
 164         if [ -f '$(FDINITRD)' ] ; then \
 165                 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' w:initrd.img ; \
 166         fi
 167         MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage w:linux        ; sync
 168
 169 isoimage: $(obj)/bzImage
 170         -rm -rf $(obj)/isoimage
 171         mkdir $(obj)/isoimage
 172         for i in lib lib64 share end ; do \
 173                 if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \
 174                         cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \
 175                         break ; \
 176                 fi ; \
 177                 if [ $$i = end ] ; then exit 1 ; fi ; \
 178         done
 179         cp $(obj)/bzImage $(obj)/isoimage/linux
 180         echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg
 181         if [ -f '$(FDINITRD)' ] ; then \
 182                 cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \
 183         fi
 184         mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \
 185                 -no-emul-boot -boot-load-size 4 -boot-info-table \
 186                 $(obj)/isoimage
 187         isohybrid $(obj)/image.iso 2>/dev/null || true
 188         rm -rf $(obj)/isoimage
 189
 190 bzlilo: $(obj)/bzImage
 191         if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
 192         if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
 193         cat $(obj)/bzImage > $(INSTALL_PATH)/vmlinuz
 194         cp System.map $(INSTALL_PATH)/
 195         if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
 196
 197 install:
 198         sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(obj)/bzImage \
 199                 System.map "$(INSTALL_PATH)"