arch/ppc/boot/openfirmware/Makefile

   1 # Makefile for making bootable images on various OpenFirmware machines.
   2 #
   3 # This file is included by the global makefile so that you can add your own
   4 # architecture-specific flags and dependencies.
   5 #
   6 # Paul Mackerras        January 1997
   7 #       XCOFF bootable images for PowerMacs
   8 # Geert Uytterhoeven    September 1997
   9 #       ELF bootable iamges for CHRP machines.
  10 # Tom Rini              January 2001
  11 #       Cleaned up, moved into arch/ppc/boot/pmac
  12 # Tom Rini              July/August 2002
  13 #       Merged 'chrp' and 'pmac' into 'openfirmware', and cleaned up the
  14 #       rules.
  15
  16 zImage.initrd znetboot.initrd: del-ramdisk-sec  := -R .ramdisk
  17 zImage.initrd znetboot.initrd: initrd           := .initrd
  18
  19
  20 boot    := arch/ppc/boot
  21 common  := $(boot)/common
  22 utils   := $(boot)/utils
  23 bootlib := $(boot)/lib
  24 of1275  := $(boot)/of1275
  25 images  := $(boot)/images
  26
  27 CHRP_LD_ARGS    := -T $(srctree)/$(boot)/ld.script -e _start -Ttext 0x00800000
  28
  29 COMMONOBJS      := start.o misc.o common.o
  30 CHRPOBJS        := crt0.o     $(COMMONOBJS) chrpmain.o
  31
  32 targets         := $(CHRPOBJS) dummy.o
  33 CHRPOBJS        := $(addprefix $(obj)/, $(CHRPOBJS))
  34
  35 LIBS            := lib/lib.a $(bootlib)/lib.a $(of1275)/lib.a $(common)/lib.a
  36
  37 ifdef CONFIG_SMP
  38 END := .smp
  39 endif
  40 ifdef CONFIG_PPC64BRIDGE
  41 END += .64
  42 endif
  43
  44
  45 $(images)/ramdisk.image.gz:
  46         @echo '  MISSING $@'
  47         @echo '          RAM disk image must be provided separately'
  48         @/bin/false
  49
  50 quiet_cmd_genimage = GEN     $@
  51       cmd_genimage = $(OBJCOPY) -R .comment       \
  52         --add-section=.image=$(images)/vmlinux.gz \
  53         --set-section-flags=.image=contents,alloc,load,readonly,data $< $@
  54
  55 targets += image.o
  56 $(obj)/image.o: $(obj)/dummy.o $(images)/vmlinux.gz FORCE
  57         $(call if_changed,genimage)
  58
  59 # Place the ramdisk in the initrd image.
  60 quiet_cmd_genimage-initrd = GEN     $@
  61       cmd_genimage-initrd = $(OBJCOPY) $< $@ \
  62         --add-section=.ramdisk=$(images)/ramdisk.image.gz \
  63         --set-section-flags=.ramdisk=contents,alloc,load,readonly,data
  64 targets += image.initrd.o
  65 $(obj)/image.initrd.o: $(obj)/image.o $(images)/ramdisk.image.gz FORCE
  66         $(call if_changed,genimage-initrd)
  67
  68
  69 targets += crt0.o
  70 $(obj)/crt0.o: $(common)/crt0.S FORCE
  71         $(call if_changed_dep,as_o_S)
  72
  73 quiet_cmd_gen-chrp = CHRP    $@
  74       cmd_gen-chrp = $(LD) $(CHRP_LD_ARGS) -o $@ $(CHRPOBJS) $< $(LIBS) && \
  75                         $(OBJCOPY) $@ $@ -R .comment $(del-ramdisk-sec)
  76
  77 $(images)/zImage.chrp: $(obj)/image.o $(CHRPOBJS) $(LIBS) \
  78                                    $(srctree)/$(boot)/ld.script
  79         $(call cmd,gen-chrp)
  80 $(images)/zImage.initrd.chrp: $(obj)/image.initrd.o $(CHRPOBJS) $(LIBS) \
  81                                    $(srctree)/$(boot)/ld.script
  82         $(call cmd,gen-chrp)
  83
  84 quiet_cmd_addnote = ADDNOTE $@
  85       cmd_addnote = cat $< > $@ && $(utils)/addnote $@
  86 $(images)/zImage.chrp-rs6k $(images)/zImage.initrd.chrp-rs6k: \
  87         %-rs6k: %
  88         $(call cmd,addnote)
  89
  90 # The targets used on the make command-line
  91
  92 PHONY += zImage zImage.initrd
  93 zImage:          $(images)/zImage.chrp          \
  94                  $(images)/zImage.chrp-rs6k
  95         @echo '  kernel: $@ is ready ($<)'
  96 zImage.initrd:   $(images)/zImage.initrd.chrp           \
  97                  $(images)/zImage.initrd.chrp-rs6k
  98         @echo '  kernel: $@ is ready ($<)'
  99
 100 TFTPIMAGE       := /tftpboot/zImage
 101
 102 PHONY += znetboot znetboot.initrd
 103 znetboot:       $(images)/zImage.chrp
 104         cp $(images)/zImage.chrp      $(TFTPIMAGE).chrp$(END)
 105         @echo '  kernel: $@ is ready ($<)'
 106 znetboot.initrd:$(images)/zImage.initrd.chrp
 107         cp $(images)/zImage.initrd.chrp      $(TFTPIMAGE).chrp$(END)
 108         @echo '  kernel: $@ is ready ($<)'
 109