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   1 # Makefile for making bootable images on various OpenFirmware machines.
   2 #
   3 # Paul Mackerras        January 1997
   4 #       XCOFF bootable images for PowerMacs
   5 # Geert Uytterhoeven    September 1997
   6 #       ELF bootable iamges for CHRP machines.
   7 # Tom Rini              January 2001
   8 #       Cleaned up, moved into arch/ppc/boot/pmac
   9 # Tom Rini              July/August 2002
  10 #       Merged 'chrp' and 'pmac' into 'openfirmware', and cleaned up the
  11 #       rules.
  12
  13 zImage.initrd znetboot.initrd: del-ramdisk-sec  := -R .ramdisk
  14 zImage.initrd znetboot.initrd: initrd           := .initrd
  15
  16
  17 boot    := arch/ppc/boot
  18 common  := $(boot)/common
  19 utils   := $(boot)/utils
  20 bootlib := $(boot)/lib
  21 of1275  := $(boot)/of1275
  22 images  := $(boot)/images
  23
  24 OBJCOPY_ARGS    := -O aixcoff-rs6000 -R .stab -R .stabstr -R .comment
  25 COFF_LD_ARGS    := -T $(srctree)/$(boot)/ld.script -e _start -Ttext 0x00500000 \
  26                         -Bstatic
  27 CHRP_LD_ARGS    := -T $(srctree)/$(boot)/ld.script -e _start -Ttext 0x00800000
  28 NEWWORLD_LD_ARGS:= -T $(srctree)/$(boot)/ld.script -e _start -Ttext 0x01000000
  29
  30 COMMONOBJS      := start.o misc.o common.o
  31 COFFOBJS        := coffcrt0.o $(COMMONOBJS) coffmain.o
  32 CHRPOBJS        := crt0.o     $(COMMONOBJS) chrpmain.o
  33 NEWWORLDOBJS    := crt0.o     $(COMMONOBJS) newworldmain.o
  34
  35 targets         := $(COFFOBJS) $(CHRPOBJS) $(NEWWORLDOBJS) dummy.o
  36 COFFOBJS        := $(addprefix $(obj)/, $(COFFOBJS))
  37 CHRPOBJS        := $(addprefix $(obj)/, $(CHRPOBJS))
  38 NEWWORLDOBJS    := $(addprefix $(obj)/, $(NEWWORLDOBJS))
  39
  40 LIBS            := lib/lib.a $(bootlib)/lib.a $(of1275)/lib.a $(common)/lib.a
  41
  42 HACKCOFF := $(utils)/hack-coff
  43
  44 ifdef CONFIG_SMP
  45 END := .smp
  46 endif
  47 ifdef CONFIG_PPC64BRIDGE
  48 END += .64
  49 endif
  50
  51
  52 $(images)/ramdisk.image.gz:
  53         @echo '  MISSING $@'
  54         @echo '          RAM disk image must be provided separately'
  55         @/bin/false
  56
  57 quiet_cmd_genimage = GEN     $@
  58       cmd_genimage = $(OBJCOPY) -R .comment       \
  59         --add-section=.image=$(images)/vmlinux.gz \
  60         --set-section-flags=.image=contents,alloc,load,readonly,data $< $@
  61
  62 targets += image.o
  63 $(obj)/image.o: $(obj)/dummy.o $(images)/vmlinux.gz FORCE
  64         $(call if_changed,genimage)
  65
  66 # Place the ramdisk in the initrd image.
  67 quiet_cmd_genimage-initrd = GEN     $@
  68       cmd_genimage-initrd = $(OBJCOPY) $< $@ \
  69         --add-section=.ramdisk=$(images)/ramdisk.image.gz \
  70         --set-section-flags=.ramdisk=contents,alloc,load,readonly,data
  71 targets += image.initrd.o
  72 $(obj)/image.initrd.o: $(obj)/image.o $(images)/ramdisk.image.gz FORCE
  73         $(call if_changed,genimage-initrd)
  74
  75 # Create the note section for New-World PowerMacs.
  76 quiet_cmd_mknote = MKNOTE  $@
  77      cmd_mknote  = $(utils)/mknote > $@
  78 targets         += note
  79 $(obj)/note: $(utils)/mknote FORCE
  80         $(call if_changed,mknote)
  81
  82
  83 $(obj)/coffcrt0.o: EXTRA_AFLAGS := -traditional -DXCOFF
  84 $(obj)/crt0.o:     EXTRA_AFLAGS := -traditional
  85 targets += coffcrt0.o crt0.o
  86 $(obj)/coffcrt0.o $(obj)/crt0.o: $(common)/crt0.S FORCE
  87         $(call if_changed_dep,as_o_S)
  88
  89 quiet_cmd_gencoffb = COFF    $@
  90       cmd_gencoffb = $(LD) -o $@ $(COFF_LD_ARGS) $(COFFOBJS) $< $(LIBS) && \
  91                      $(OBJCOPY) $@ $@ -R .comment $(del-ramdisk-sec)
  92 targets += coffboot
  93 $(obj)/coffboot: $(obj)/image.o $(COFFOBJS) $(LIBS) $(srctree)/$(boot)/ld.script FORCE
  94         $(call if_changed,gencoffb)
  95 targets += coffboot.initrd
  96 $(obj)/coffboot.initrd: $(obj)/image.initrd.o $(COFFOBJS) $(LIBS) \
  97                         $(srctree)/$(boot)/ld.script FORCE
  98         $(call if_changed,gencoffb)
  99
 100
 101 quiet_cmd_gen-coff = COFF    $@
 102       cmd_gen-coff = $(OBJCOPY) $(OBJCOPY_ARGS) $< $@ && \
 103                         $(HACKCOFF) $@ && \
 104                         ln -sf $(notdir $@) $(images)/zImage$(initrd).pmac
 105
 106 $(images)/vmlinux.coff: $(obj)/coffboot
 107         $(call cmd,gen-coff)
 108
 109 $(images)/vmlinux.initrd.coff: $(obj)/coffboot.initrd
 110         $(call cmd,gen-coff)
 111
 112 quiet_cmd_gen-elf-pmac = ELF     $@
 113       cmd_gen-elf-pmac = $(LD) $(NEWWORLD_LD_ARGS) -o $@ \
 114                                 $(NEWWORLDOBJS) $(LIBS) $< && \
 115                         $(OBJCOPY) $@ $@ --add-section=.note=$(obj)/note \
 116                                          -R .comment $(del-ramdisk-sec)
 117
 118 $(images)/vmlinux.elf-pmac: $(obj)/image.o $(NEWWORLDOBJS) $(LIBS) \
 119                         $(obj)/note $(srctree)/$(boot)/ld.script
 120         $(call cmd,gen-elf-pmac)
 121 $(images)/vmlinux.initrd.elf-pmac: $(obj)/image.initrd.o $(NEWWORLDOBJS) \
 122                                    $(LIBS) $(obj)/note \
 123                                    $(srctree)/$(boot)/ld.script
 124         $(call cmd,gen-elf-pmac)
 125
 126 quiet_cmd_gen-chrp = CHRP    $@
 127       cmd_gen-chrp = $(LD) $(CHRP_LD_ARGS) -o $@ $(CHRPOBJS) $< $(LIBS) && \
 128                         $(OBJCOPY) $@ $@ -R .comment $(del-ramdisk-sec)
 129
 130 $(images)/zImage.chrp: $(obj)/image.o $(CHRPOBJS) $(LIBS) \
 131                                    $(srctree)/$(boot)/ld.script
 132         $(call cmd,gen-chrp)
 133 $(images)/zImage.initrd.chrp: $(obj)/image.initrd.o $(CHRPOBJS) $(LIBS) \
 134                                    $(srctree)/$(boot)/ld.script
 135         $(call cmd,gen-chrp)
 136
 137 quiet_cmd_addnote = ADDNOTE $@
 138       cmd_addnote = cat $< > $@ && $(utils)/addnote $@
 139 $(images)/zImage.chrp-rs6k $(images)/zImage.initrd.chrp-rs6k: \
 140         %-rs6k: %
 141         $(call cmd,addnote)
 142
 143 quiet_cmd_gen-miboot = GEN     $@
 144       cmd_gen-miboot = $(OBJCOPY) $(OBJCOPY_ARGS) \
 145                        --add-section=$1=$(word 2, $^) $< $@
 146 $(images)/miboot.image: $(obj)/dummy.o $(images)/vmlinux.gz
 147         $(call cmd,gen-miboot,image)
 148
 149 $(images)/miboot.initrd.image: $(images)/miboot.image $(images)/ramdisk.image.gz
 150         $(call cmd,gen-miboot,initrd)
 151
 152 # The targets used on the make command-line
 153
 154 .PHONY: zImage zImage.initrd
 155 zImage:          $(images)/vmlinux.coff         \
 156                  $(images)/vmlinux.elf-pmac     \
 157                  $(images)/zImage.chrp          \
 158                  $(images)/zImage.chrp-rs6k     \
 159                  $(images)/miboot.image
 160         @echo '  kernel: $@ is ready ($<)'
 161 zImage.initrd:   $(images)/vmlinux.initrd.coff          \
 162                  $(images)/vmlinux.initrd.elf-pmac      \
 163                  $(images)/zImage.initrd.chrp           \
 164                  $(images)/zImage.initrd.chrp-rs6k      \
 165                  $(images)/miboot.initrd.image
 166         @echo '  kernel: $@ is ready ($<)'
 167
 168 TFTPIMAGE       := /tftpboot/zImage
 169
 170 .PHONY: znetboot znetboot.initrd
 171 znetboot:       $(images)/vmlinux.coff          \
 172                 $(images)/vmlinux.elf-pmac      \
 173                 $(images)/zImage.chrp
 174         cp $(images)/vmlinux.coff     $(TFTPIMAGE).pmac$(END)
 175         cp $(images)/vmlinux.elf-pmac $(TFTPIMAGE).pmac$(END).elf
 176         cp $(images)/zImage.chrp      $(TFTPIMAGE).chrp$(END)
 177         @echo '  kernel: $@ is ready ($<)'
 178 znetboot.initrd:$(images)/vmlinux.initrd.coff           \
 179                 $(images)/vmlinux.initrd.elf-pmac       \
 180                 $(images)/zImage.initrd.chrp
 181         cp $(images)/vmlinux.initrd.coff     $(TFTPIMAGE).pmac$(END)
 182         cp $(images)/vmlinux.initrd.elf-pmac $(TFTPIMAGE).pmac$(END).elf
 183         cp $(images)/zImage.initrd.chrp      $(TFTPIMAGE).chrp$(END)
 184         @echo '  kernel: $@ is ready ($<)'
 185