linux/arch/x86/boot/Makefile
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   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#
  10
  11# ROOT_DEV specifies the default root-device when making the image.
  12# This can be either FLOPPY, CURRENT, /dev/xxxx or empty, in which case
  13# the default of FLOPPY is used by 'build'.
  14
  15ROOT_DEV := CURRENT
  16
  17# If you want to preset the SVGA mode, uncomment the next line and
  18# set SVGA_MODE to whatever number you want.
  19# Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
  20# The number is the same as you would ordinarily press at bootup.
  21
  22SVGA_MODE := -DSVGA_MODE=NORMAL_VGA
  23
  24# If you want the RAM disk device, define this to be the size in blocks.
  25
  26#RAMDISK := -DRAMDISK=512
  27
  28targets         := vmlinux.bin setup.bin setup.elf zImage bzImage
  29subdir-         := compressed
  30
  31setup-y         += a20.o cmdline.o copy.o cpu.o cpucheck.o edd.o
  32setup-y         += header.o main.o mca.o memory.o pm.o pmjump.o
  33setup-y         += printf.o string.o tty.o video.o video-mode.o version.o
  34setup-$(CONFIG_X86_APM_BOOT) += apm.o
  35setup-$(CONFIG_X86_VOYAGER) += voyager.o
  36
  37# The link order of the video-*.o modules can matter.  In particular,
  38# video-vga.o *must* be listed first, followed by video-vesa.o.
  39# Hardware-specific drivers should follow in the order they should be
  40# probed, and video-bios.o should typically be last.
  41setup-y         += video-vga.o
  42setup-y         += video-vesa.o
  43setup-y         += video-bios.o
  44
  45targets         += $(setup-y)
  46hostprogs-y     := mkcpustr tools/build
  47
  48HOST_EXTRACFLAGS += $(LINUXINCLUDE)
  49
  50$(obj)/cpu.o: $(obj)/cpustr.h
  51
  52quiet_cmd_cpustr = CPUSTR  $@
  53      cmd_cpustr = $(obj)/mkcpustr > $@
  54targets         += cpustr.h
  55$(obj)/cpustr.h: $(obj)/mkcpustr FORCE
  56        $(call if_changed,cpustr)
  57
  58# ---------------------------------------------------------------------------
  59
  60# How to compile the 16-bit code.  Note we always compile for -march=i386,
  61# that way we can complain to the user if the CPU is insufficient.
  62KBUILD_CFLAGS   := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
  63                   -Wall -Wstrict-prototypes \
  64                   -march=i386 -mregparm=3 \
  65                   -include $(srctree)/$(src)/code16gcc.h \
  66                   -fno-strict-aliasing -fomit-frame-pointer \
  67                   $(call cc-option, -ffreestanding) \
  68                   $(call cc-option, -fno-toplevel-reorder,\
  69                        $(call cc-option, -fno-unit-at-a-time)) \
  70                   $(call cc-option, -fno-stack-protector) \
  71                   $(call cc-option, -mpreferred-stack-boundary=2)
  72KBUILD_CFLAGS +=   $(call cc-option,-m32)
  73KBUILD_AFLAGS   := $(KBUILD_CFLAGS) -D__ASSEMBLY__
  74
  75$(obj)/zImage:  IMAGE_OFFSET := 0x1000
  76$(obj)/zImage:  asflags-y := $(SVGA_MODE) $(RAMDISK)
  77$(obj)/bzImage: IMAGE_OFFSET := 0x100000
  78$(obj)/bzImage: ccflags-y := -D__BIG_KERNEL__
  79$(obj)/bzImage: asflags-y := $(SVGA_MODE) $(RAMDISK) -D__BIG_KERNEL__
  80$(obj)/bzImage: BUILDFLAGS   := -b
  81
  82quiet_cmd_image = BUILD   $@
  83cmd_image = $(obj)/tools/build $(BUILDFLAGS) $(obj)/setup.bin \
  84            $(obj)/vmlinux.bin $(ROOT_DEV) > $@
  85
  86$(obj)/zImage $(obj)/bzImage: $(obj)/setup.bin \
  87                              $(obj)/vmlinux.bin $(obj)/tools/build FORCE
  88        $(call if_changed,image)
  89        @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
  90
  91OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
  92$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
  93        $(call if_changed,objcopy)
  94
  95SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
  96
  97sed-offsets := -e 's/^00*/0/' \
  98        -e 's/^\([0-9a-fA-F]*\) . \(input_data\|input_data_end\)$$/\#define \2 0x\1/p'
  99
 100quiet_cmd_offsets = OFFSETS $@
 101      cmd_offsets = $(NM) $< | sed -n $(sed-offsets) > $@
 102
 103$(obj)/offsets.h: $(obj)/compressed/vmlinux FORCE
 104        $(call if_changed,offsets)
 105
 106targets += offsets.h
 107
 108AFLAGS_header.o += -I$(obj)
 109$(obj)/header.o: $(obj)/offsets.h
 110
 111LDFLAGS_setup.elf       := -T
 112$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
 113        $(call if_changed,ld)
 114
 115OBJCOPYFLAGS_setup.bin  := -O binary
 116$(obj)/setup.bin: $(obj)/setup.elf FORCE
 117        $(call if_changed,objcopy)
 118
 119$(obj)/compressed/vmlinux: FORCE
 120        $(Q)$(MAKE) $(build)=$(obj)/compressed IMAGE_OFFSET=$(IMAGE_OFFSET) $@
 121
 122# Set this if you want to pass append arguments to the zdisk/fdimage/isoimage kernel
 123FDARGS =
 124# Set this if you want an initrd included with the zdisk/fdimage/isoimage kernel
 125FDINITRD =
 126
 127image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,)
 128
 129$(obj)/mtools.conf: $(src)/mtools.conf.in
 130        sed -e 's|@OBJ@|$(obj)|g' < $< > $@
 131
 132# This requires write access to /dev/fd0
 133zdisk: $(BOOTIMAGE) $(obj)/mtools.conf
 134        MTOOLSRC=$(obj)/mtools.conf mformat a:                  ; sync
 135        syslinux /dev/fd0                                       ; sync
 136        echo '$(image_cmdline)' | \
 137                MTOOLSRC=$(src)/mtools.conf mcopy - a:syslinux.cfg
 138        if [ -f '$(FDINITRD)' ] ; then \
 139                MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' a:initrd.img ; \
 140        fi
 141        MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) a:linux  ; sync
 142
 143# These require being root or having syslinux 2.02 or higher installed
 144fdimage fdimage144: $(BOOTIMAGE) $(obj)/mtools.conf
 145        dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440
 146        MTOOLSRC=$(obj)/mtools.conf mformat v:                  ; sync
 147        syslinux $(obj)/fdimage                                 ; sync
 148        echo '$(image_cmdline)' | \
 149                MTOOLSRC=$(obj)/mtools.conf mcopy - v:syslinux.cfg
 150        if [ -f '$(FDINITRD)' ] ; then \
 151                MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' v:initrd.img ; \
 152        fi
 153        MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) v:linux  ; sync
 154
 155fdimage288: $(BOOTIMAGE) $(obj)/mtools.conf
 156        dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880
 157        MTOOLSRC=$(obj)/mtools.conf mformat w:                  ; sync
 158        syslinux $(obj)/fdimage                                 ; sync
 159        echo '$(image_cmdline)' | \
 160                MTOOLSRC=$(obj)/mtools.conf mcopy - w:syslinux.cfg
 161        if [ -f '$(FDINITRD)' ] ; then \
 162                MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' w:initrd.img ; \
 163        fi
 164        MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) w:linux  ; sync
 165
 166isoimage: $(BOOTIMAGE)
 167        -rm -rf $(obj)/isoimage
 168        mkdir $(obj)/isoimage
 169        for i in lib lib64 share end ; do \
 170                if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \
 171                        cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \
 172                        break ; \
 173                fi ; \
 174                if [ $$i = end ] ; then exit 1 ; fi ; \
 175        done
 176        cp $(BOOTIMAGE) $(obj)/isoimage/linux
 177        echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg
 178        if [ -f '$(FDINITRD)' ] ; then \
 179                cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \
 180        fi
 181        mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \
 182                -no-emul-boot -boot-load-size 4 -boot-info-table \
 183                $(obj)/isoimage
 184        rm -rf $(obj)/isoimage
 185
 186zlilo: $(BOOTIMAGE)
 187        if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
 188        if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
 189        cat $(BOOTIMAGE) > $(INSTALL_PATH)/vmlinuz
 190        cp System.map $(INSTALL_PATH)/
 191        if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
 192
 193install:
 194        sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(BOOTIMAGE) System.map "$(INSTALL_PATH)"
 195