a7fdd90bc4
This makes it possible to build kernels for PReP and/or CHRP with ARCH=ppc by removing the (non-building) powermac support. It's now also possible to select PReP and CHRP independently. Powermac users should now build with ARCH=powerpc instead of ARCH=ppc. (This does mean that it is no longer possible to build a 32-bit kernel for a G5.) Signed-off-by: Paul Mackerras <paulus@samba.org>
106 lines
3.1 KiB
Makefile
106 lines
3.1 KiB
Makefile
# Makefile for making bootable images on various OpenFirmware machines.
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#
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# Paul Mackerras January 1997
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# XCOFF bootable images for PowerMacs
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# Geert Uytterhoeven September 1997
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# ELF bootable iamges for CHRP machines.
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# Tom Rini January 2001
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# Cleaned up, moved into arch/ppc/boot/pmac
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# Tom Rini July/August 2002
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# Merged 'chrp' and 'pmac' into 'openfirmware', and cleaned up the
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# rules.
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zImage.initrd znetboot.initrd: del-ramdisk-sec := -R .ramdisk
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zImage.initrd znetboot.initrd: initrd := .initrd
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boot := arch/ppc/boot
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common := $(boot)/common
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utils := $(boot)/utils
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bootlib := $(boot)/lib
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of1275 := $(boot)/of1275
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images := $(boot)/images
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CHRP_LD_ARGS := -T $(srctree)/$(boot)/ld.script -e _start -Ttext 0x00800000
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COMMONOBJS := start.o misc.o common.o
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CHRPOBJS := crt0.o $(COMMONOBJS) chrpmain.o
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targets := $(CHRPOBJS) dummy.o
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CHRPOBJS := $(addprefix $(obj)/, $(CHRPOBJS))
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LIBS := lib/lib.a $(bootlib)/lib.a $(of1275)/lib.a $(common)/lib.a
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ifdef CONFIG_SMP
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END := .smp
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endif
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ifdef CONFIG_PPC64BRIDGE
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END += .64
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endif
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$(images)/ramdisk.image.gz:
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@echo ' MISSING $@'
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@echo ' RAM disk image must be provided separately'
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@/bin/false
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quiet_cmd_genimage = GEN $@
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cmd_genimage = $(OBJCOPY) -R .comment \
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--add-section=.image=$(images)/vmlinux.gz \
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--set-section-flags=.image=contents,alloc,load,readonly,data $< $@
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targets += image.o
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$(obj)/image.o: $(obj)/dummy.o $(images)/vmlinux.gz FORCE
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$(call if_changed,genimage)
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# Place the ramdisk in the initrd image.
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quiet_cmd_genimage-initrd = GEN $@
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cmd_genimage-initrd = $(OBJCOPY) $< $@ \
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--add-section=.ramdisk=$(images)/ramdisk.image.gz \
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--set-section-flags=.ramdisk=contents,alloc,load,readonly,data
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targets += image.initrd.o
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$(obj)/image.initrd.o: $(obj)/image.o $(images)/ramdisk.image.gz FORCE
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$(call if_changed,genimage-initrd)
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targets += crt0.o
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$(obj)/crt0.o: $(common)/crt0.S FORCE
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$(call if_changed_dep,as_o_S)
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quiet_cmd_gen-chrp = CHRP $@
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cmd_gen-chrp = $(LD) $(CHRP_LD_ARGS) -o $@ $(CHRPOBJS) $< $(LIBS) && \
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$(OBJCOPY) $@ $@ -R .comment $(del-ramdisk-sec)
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$(images)/zImage.chrp: $(obj)/image.o $(CHRPOBJS) $(LIBS) \
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$(srctree)/$(boot)/ld.script
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$(call cmd,gen-chrp)
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$(images)/zImage.initrd.chrp: $(obj)/image.initrd.o $(CHRPOBJS) $(LIBS) \
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$(srctree)/$(boot)/ld.script
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$(call cmd,gen-chrp)
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quiet_cmd_addnote = ADDNOTE $@
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cmd_addnote = cat $< > $@ && $(utils)/addnote $@
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$(images)/zImage.chrp-rs6k $(images)/zImage.initrd.chrp-rs6k: \
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%-rs6k: %
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$(call cmd,addnote)
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# The targets used on the make command-line
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.PHONY: zImage zImage.initrd
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zImage: $(images)/zImage.chrp \
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$(images)/zImage.chrp-rs6k
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@echo ' kernel: $@ is ready ($<)'
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zImage.initrd: $(images)/zImage.initrd.chrp \
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$(images)/zImage.initrd.chrp-rs6k
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@echo ' kernel: $@ is ready ($<)'
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TFTPIMAGE := /tftpboot/zImage
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.PHONY: znetboot znetboot.initrd
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znetboot: $(images)/zImage.chrp
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cp $(images)/zImage.chrp $(TFTPIMAGE).chrp$(END)
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@echo ' kernel: $@ is ready ($<)'
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znetboot.initrd:$(images)/zImage.initrd.chrp
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cp $(images)/zImage.initrd.chrp $(TFTPIMAGE).chrp$(END)
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@echo ' kernel: $@ is ready ($<)'
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