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 subdir-         := compressed
  27
  28 setup-y         += a20.o cmdline.o copy.o cpu.o cpucheck.o edd.o
  29 setup-y         += header.o main.o mca.o memory.o pm.o pmjump.o
  30 setup-y         += printf.o string.o tty.o video.o video-mode.o version.o
  31 setup-$(CONFIG_X86_APM_BOOT) += apm.o
  32
  33 # The link order of the video-*.o modules can matter.  In particular,
  34 # video-vga.o *must* be listed first, followed by video-vesa.o.
  35 # Hardware-specific drivers should follow in the order they should be
  36 # probed, and video-bios.o should typically be last.
  37 setup-y         += video-vga.o
  38 setup-y         += video-vesa.o
  39 setup-y         += video-bios.o
  40
  41 targets         += $(setup-y)
  42 hostprogs-y     := mkcpustr tools/build
  43
  44 HOST_EXTRACFLAGS += $(LINUXINCLUDE)
  45
  46 $(obj)/cpu.o: $(obj)/cpustr.h
  47
  48 quiet_cmd_cpustr = CPUSTR  $@
  49       cmd_cpustr = $(obj)/mkcpustr > $@
  50 targets         += cpustr.h
  51 $(obj)/cpustr.h: $(obj)/mkcpustr FORCE
  52         $(call if_changed,cpustr)
  53
  54 # ---------------------------------------------------------------------------
  55
  56 # How to compile the 16-bit code.  Note we always compile for -march=i386,
  57 # that way we can complain to the user if the CPU is insufficient.
  58 KBUILD_CFLAGS   := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
  59                    -Wall -Wstrict-prototypes \
  60                    -march=i386 -mregparm=3 \
  61                    -include $(srctree)/$(src)/code16gcc.h \
  62                    -fno-strict-aliasing -fomit-frame-pointer \
  63                    $(call cc-option, -ffreestanding) \
  64                    $(call cc-option, -fno-toplevel-reorder,\
  65                         $(call cc-option, -fno-unit-at-a-time)) \
  66                    $(call cc-option, -fno-stack-protector) \
  67                    $(call cc-option, -mpreferred-stack-boundary=2)
  68 KBUILD_CFLAGS +=   $(call cc-option,-m32)
  69 KBUILD_AFLAGS   := $(KBUILD_CFLAGS) -D__ASSEMBLY__
  70
  71 $(obj)/bzImage: asflags-y  := $(SVGA_MODE)
  72
  73 quiet_cmd_image = BUILD   $@
  74 cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
  75         $(ROOT_DEV) > $@
  76
  77 $(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
  78         $(call if_changed,image)
  79         @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
  80
  81 OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
  82 $(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
  83         $(call if_changed,objcopy)
  84
  85 SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
  86
  87 sed-offsets := -e 's/^00*/0/' \
  88         -e 's/^\([0-9a-fA-F]*\) . \(input_data\|input_data_end\)$$/\#define \2 0x\1/p'
  89
  90 quiet_cmd_offsets = OFFSETS $@
  91       cmd_offsets = $(NM) $< | sed -n $(sed-offsets) > $@
  92
  93 $(obj)/offsets.h: $(obj)/compressed/vmlinux FORCE
  94         $(call if_changed,offsets)
  95
  96 targets += offsets.h
  97
  98 AFLAGS_header.o += -I$(obj)
  99 $(obj)/header.o: $(obj)/offsets.h
 100
 101 LDFLAGS_setup.elf       := -T
 102 $(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
 103         $(call if_changed,ld)
 104
 105 OBJCOPYFLAGS_setup.bin  := -O binary
 106 $(obj)/setup.bin: $(obj)/setup.elf FORCE
 107         $(call if_changed,objcopy)
 108
 109 $(obj)/compressed/vmlinux: FORCE
 110         $(Q)$(MAKE) $(build)=$(obj)/compressed $@
 111
 112 # Set this if you want to pass append arguments to the
 113 # bzdisk/fdimage/isoimage kernel
 114 FDARGS =
 115 # Set this if you want an initrd included with the
 116 # bzdisk/fdimage/isoimage kernel
 117 FDINITRD =
 118
 119 image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,)
 120
 121 $(obj)/mtools.conf: $(src)/mtools.conf.in
 122         sed -e 's|@OBJ@|$(obj)|g' < $< > $@
 123
 124 # This requires write access to /dev/fd0
 125 bzdisk: $(obj)/bzImage $(obj)/mtools.conf
 126         MTOOLSRC=$(obj)/mtools.conf mformat a:                  ; sync
 127         syslinux /dev/fd0                                       ; sync
 128         echo '$(image_cmdline)' | \
 129                 MTOOLSRC=$(src)/mtools.conf mcopy - a:syslinux.cfg
 130         if [ -f '$(FDINITRD)' ] ; then \
 131                 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' a:initrd.img ; \
 132         fi
 133         MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage a:linux        ; sync
 134
 135 # These require being root or having syslinux 2.02 or higher installed
 136 fdimage fdimage144: $(obj)/bzImage $(obj)/mtools.conf
 137         dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440
 138         MTOOLSRC=$(obj)/mtools.conf mformat v:                  ; sync
 139         syslinux $(obj)/fdimage                                 ; sync
 140         echo '$(image_cmdline)' | \
 141                 MTOOLSRC=$(obj)/mtools.conf mcopy - v:syslinux.cfg
 142         if [ -f '$(FDINITRD)' ] ; then \
 143                 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' v:initrd.img ; \
 144         fi
 145         MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage v:linux        ; sync
 146
 147 fdimage288: $(obj)/bzImage $(obj)/mtools.conf
 148         dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880
 149         MTOOLSRC=$(obj)/mtools.conf mformat w:                  ; sync
 150         syslinux $(obj)/fdimage                                 ; sync
 151         echo '$(image_cmdline)' | \
 152                 MTOOLSRC=$(obj)/mtools.conf mcopy - w:syslinux.cfg
 153         if [ -f '$(FDINITRD)' ] ; then \
 154                 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' w:initrd.img ; \
 155         fi
 156         MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage w:linux        ; sync
 157
 158 isoimage: $(obj)/bzImage
 159         -rm -rf $(obj)/isoimage
 160         mkdir $(obj)/isoimage
 161         for i in lib lib64 share end ; do \
 162                 if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \
 163                         cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \
 164                         break ; \
 165                 fi ; \
 166                 if [ $$i = end ] ; then exit 1 ; fi ; \
 167         done
 168         cp $(obj)/bzImage $(obj)/isoimage/linux
 169         echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg
 170         if [ -f '$(FDINITRD)' ] ; then \
 171                 cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \
 172         fi
 173         mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \
 174                 -no-emul-boot -boot-load-size 4 -boot-info-table \
 175                 $(obj)/isoimage
 176         isohybrid $(obj)/image.iso 2>/dev/null || true
 177         rm -rf $(obj)/isoimage
 178
 179 bzlilo: $(obj)/bzImage
 180         if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
 181         if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
 182         cat $(obj)/bzImage > $(INSTALL_PATH)/vmlinuz
 183         cp System.map $(INSTALL_PATH)/
 184         if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
 185
 186 install:
 187         sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(obj)/bzImage \
 188                 System.map "$(INSTALL_PATH)"