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 GCOV_PROFILE := n
  74
  75 $(obj)/bzImage: asflags-y  := $(SVGA_MODE)
  76
  77 quiet_cmd_image = BUILD   $@
  78 cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
  79         $(ROOT_DEV) > $@
  80
  81 $(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
  82         $(call if_changed,image)
  83         @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
  84
  85 OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
  86 $(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
  87         $(call if_changed,objcopy)
  88
  89 SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
  90
  91 sed-voffset := -e 's/^\([0-9a-fA-F]*\) . \(_text\|_end\)$$/\#define VO_\2 0x\1/p'
  92
  93 quiet_cmd_voffset = VOFFSET $@
  94       cmd_voffset = $(NM) $< | sed -n $(sed-voffset) > $@
  95
  96 targets += voffset.h
  97 $(obj)/voffset.h: vmlinux FORCE
  98         $(call if_changed,voffset)
  99
 100 sed-zoffset := -e 's/^\([0-9a-fA-F]*\) . \(startup_32\|input_data\|_end\|z_.*\)$$/\#define ZO_\2 0x\1/p'
 101
 102 quiet_cmd_zoffset = ZOFFSET $@
 103       cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@
 104
 105 targets += zoffset.h
 106 $(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE
 107         $(call if_changed,zoffset)
 108
 109
 110 AFLAGS_header.o += -I$(obj)
 111 $(obj)/header.o: $(obj)/voffset.h $(obj)/zoffset.h
 112
 113 LDFLAGS_setup.elf       := -T
 114 $(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
 115         $(call if_changed,ld)
 116
 117 OBJCOPYFLAGS_setup.bin  := -O binary
 118 $(obj)/setup.bin: $(obj)/setup.elf FORCE
 119         $(call if_changed,objcopy)
 120
 121 $(obj)/compressed/vmlinux: FORCE
 122         $(Q)$(MAKE) $(build)=$(obj)/compressed $@
 123
 124 # Set this if you want to pass append arguments to the
 125 # bzdisk/fdimage/isoimage kernel
 126 FDARGS =
 127 # Set this if you want an initrd included with the
 128 # bzdisk/fdimage/isoimage kernel
 129 FDINITRD =
 130
 131 image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,)
 132
 133 $(obj)/mtools.conf: $(src)/mtools.conf.in
 134         sed -e 's|@OBJ@|$(obj)|g' < $< > $@
 135
 136 # This requires write access to /dev/fd0
 137 bzdisk: $(obj)/bzImage $(obj)/mtools.conf
 138         MTOOLSRC=$(obj)/mtools.conf mformat a:                  ; sync
 139         syslinux /dev/fd0                                       ; sync
 140         echo '$(image_cmdline)' | \
 141                 MTOOLSRC=$(src)/mtools.conf mcopy - a:syslinux.cfg
 142         if [ -f '$(FDINITRD)' ] ; then \
 143                 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' a:initrd.img ; \
 144         fi
 145         MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage a:linux        ; sync
 146
 147 # These require being root or having syslinux 2.02 or higher installed
 148 fdimage fdimage144: $(obj)/bzImage $(obj)/mtools.conf
 149         dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440
 150         MTOOLSRC=$(obj)/mtools.conf mformat v:                  ; sync
 151         syslinux $(obj)/fdimage                                 ; sync
 152         echo '$(image_cmdline)' | \
 153                 MTOOLSRC=$(obj)/mtools.conf mcopy - v:syslinux.cfg
 154         if [ -f '$(FDINITRD)' ] ; then \
 155                 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' v:initrd.img ; \
 156         fi
 157         MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage v:linux        ; sync
 158
 159 fdimage288: $(obj)/bzImage $(obj)/mtools.conf
 160         dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880
 161         MTOOLSRC=$(obj)/mtools.conf mformat w:                  ; sync
 162         syslinux $(obj)/fdimage                                 ; sync
 163         echo '$(image_cmdline)' | \
 164                 MTOOLSRC=$(obj)/mtools.conf mcopy - w:syslinux.cfg
 165         if [ -f '$(FDINITRD)' ] ; then \
 166                 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' w:initrd.img ; \
 167         fi
 168         MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage w:linux        ; sync
 169
 170 isoimage: $(obj)/bzImage
 171         -rm -rf $(obj)/isoimage
 172         mkdir $(obj)/isoimage
 173         for i in lib lib64 share end ; do \
 174                 if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \
 175                         cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \
 176                         break ; \
 177                 fi ; \
 178                 if [ $$i = end ] ; then exit 1 ; fi ; \
 179         done
 180         cp $(obj)/bzImage $(obj)/isoimage/linux
 181         echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg
 182         if [ -f '$(FDINITRD)' ] ; then \
 183                 cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \
 184         fi
 185         mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \
 186                 -no-emul-boot -boot-load-size 4 -boot-info-table \
 187                 $(obj)/isoimage
 188         isohybrid $(obj)/image.iso 2>/dev/null || true
 189         rm -rf $(obj)/isoimage
 190
 191 bzlilo: $(obj)/bzImage
 192         if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
 193         if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
 194         cat $(obj)/bzImage > $(INSTALL_PATH)/vmlinuz
 195         cp System.map $(INSTALL_PATH)/
 196         if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
 197
 198 install:
 199         sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(obj)/bzImage \
 200                 System.map "$(INSTALL_PATH)"