4bb092811c
This simply prevents a build error if no platform is selected. Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
229 lines
8.1 KiB
Makefile
229 lines
8.1 KiB
Makefile
# Makefile for making ELF bootable images for booting on CHRP
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# using Open Firmware.
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#
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# Geert Uytterhoeven September 1997
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#
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# Based on coffboot by Paul Mackerras
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# Simplified for ppc64 by Todd Inglett
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#
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# NOTE: this code is built for 32 bit in ELF32 format even though
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# it packages a 64 bit kernel. We do this to simplify the
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# bootloader and increase compatibility with OpenFirmware.
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#
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# To this end we need to define BOOTCC, etc, as the tools
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# needed to build the 32 bit image. That's normally the same
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# compiler for the rest of the kernel, with the -m32 flag added.
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# To make it easier to setup a cross compiler,
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# CROSS32_COMPILE is setup as a prefix just like CROSS_COMPILE
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# in the toplevel makefile.
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all: $(obj)/zImage
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BOOTCFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
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-fno-strict-aliasing -Os -msoft-float -pipe \
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-fomit-frame-pointer -fno-builtin -fPIC -nostdinc \
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-isystem $(shell $(CROSS32CC) -print-file-name=include)
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BOOTAFLAGS := -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc
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ifeq ($(call cc-option-yn, -fstack-protector),y)
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BOOTCFLAGS += -fno-stack-protector
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endif
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BOOTCFLAGS += -I$(obj) -I$(srctree)/$(obj)
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$(obj)/44x.o: BOOTCFLAGS += -mcpu=440
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$(obj)/ebony.o: BOOTCFLAGS += -mcpu=440
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zlib := inffast.c inflate.c inftrees.c
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zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h
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zliblinuxheader := zlib.h zconf.h zutil.h
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$(addprefix $(obj)/,$(zlib) gunzip_util.o main.o): \
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$(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader))
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src-wlib := string.S crt0.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \
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ns16550.c serial.c simple_alloc.c div64.S util.S \
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gunzip_util.c elf_util.c $(zlib) devtree.c oflib.c ofconsole.c \
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44x.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c cuboot.c
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src-plat := of.c cuboot-83xx.c cuboot-85xx.c holly.c \
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cuboot-ebony.c treeboot-ebony.c prpmc2800.c \
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ps3-head.S ps3-hvcall.S ps3.c
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src-boot := $(src-wlib) $(src-plat) empty.c
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src-boot := $(addprefix $(obj)/, $(src-boot))
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obj-boot := $(addsuffix .o, $(basename $(src-boot)))
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obj-wlib := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-wlib))))
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obj-plat := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-plat))))
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quiet_cmd_copy_zlib = COPY $@
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cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
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quiet_cmd_copy_zlibheader = COPY $@
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cmd_copy_zlibheader = sed "s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
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# stddef.h for NULL
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quiet_cmd_copy_zliblinuxheader = COPY $@
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cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
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$(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
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$(call cmd,copy_zlib)
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$(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
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$(call cmd,copy_zlibheader)
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$(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/%
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$(call cmd,copy_zliblinuxheader)
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$(obj)/empty.c:
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@touch $@
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$(obj)/zImage.lds $(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds: $(obj)/%: $(srctree)/$(src)/%.S
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@cp $< $@
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clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \
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empty.c zImage zImage.coff.lds zImage.ps3.lds zImage.lds
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quiet_cmd_bootcc = BOOTCC $@
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cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $<
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quiet_cmd_bootas = BOOTAS $@
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cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $<
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quiet_cmd_bootar = BOOTAR $@
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cmd_bootar = $(CROSS32AR) -cr $@.$$$$ $(filter-out FORCE,$^); mv $@.$$$$ $@
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$(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c FORCE
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$(call if_changed_dep,bootcc)
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$(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S FORCE
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$(call if_changed_dep,bootas)
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$(obj)/wrapper.a: $(obj-wlib) FORCE
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$(call if_changed,bootar)
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hostprogs-y := addnote addRamDisk hack-coff mktree
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targets += $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a)
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extra-y := $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \
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$(obj)/zImage.lds $(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds
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wrapper :=$(srctree)/$(src)/wrapper
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wrapperbits := $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) \
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$(wrapper) FORCE
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#############
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# Bits for building various flavours of zImage
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ifneq ($(CROSS32_COMPILE),)
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CROSSWRAP := -C "$(CROSS32_COMPILE)"
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else
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ifneq ($(CROSS_COMPILE),)
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CROSSWRAP := -C "$(CROSS_COMPILE)"
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endif
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endif
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# args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd
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quiet_cmd_wrap = WRAP $@
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cmd_wrap =$(CONFIG_SHELL) $(wrapper) -c -o $@ -p $2 $(CROSSWRAP) \
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$(if $3, -s $3)$(if $4, -d $4)$(if $5, -i $5) vmlinux
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image-$(CONFIG_PPC_PSERIES) += zImage.pseries
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image-$(CONFIG_PPC_MAPLE) += zImage.pseries
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image-$(CONFIG_PPC_IBM_CELL_BLADE) += zImage.pseries
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image-$(CONFIG_PPC_PS3) += zImage.ps3
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image-$(CONFIG_PPC_CELLEB) += zImage.pseries
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image-$(CONFIG_PPC_CHRP) += zImage.chrp
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image-$(CONFIG_PPC_EFIKA) += zImage.chrp
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image-$(CONFIG_PPC_PMAC) += zImage.pmac
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image-$(CONFIG_PPC_HOLLY) += zImage.holly
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image-$(CONFIG_PPC_PRPMC2800) += zImage.prpmc2800
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image-$(CONFIG_PPC_ISERIES) += zImage.iseries
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image-$(CONFIG_DEFAULT_UIMAGE) += uImage
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ifneq ($(CONFIG_DEVICE_TREE),"")
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image-$(CONFIG_PPC_83xx) += cuImage.83xx
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image-$(CONFIG_PPC_85xx) += cuImage.85xx
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image-$(CONFIG_EBONY) += treeImage.ebony cuImage.ebony
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endif
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# For 32-bit powermacs, build the COFF and miboot images
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# as well as the ELF images.
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ifeq ($(CONFIG_PPC32),y)
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image-$(CONFIG_PPC_PMAC) += zImage.coff zImage.miboot
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endif
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initrd- := $(patsubst zImage%, zImage.initrd%, $(image-n) $(image-))
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initrd-y := $(patsubst zImage%, zImage.initrd%, \
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$(patsubst treeImage%, treeImage.initrd%, $(image-y)))
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initrd-y := $(filter-out $(image-y), $(initrd-y))
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targets += $(image-y) $(initrd-y)
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$(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz
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# If CONFIG_WANT_DEVICE_TREE is set and CONFIG_DEVICE_TREE isn't an
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# empty string, define 'dts' to be path to the dts
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# CONFIG_DEVICE_TREE will have "" around it, make sure to strip them
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ifeq ($(CONFIG_WANT_DEVICE_TREE),y)
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ifneq ($(CONFIG_DEVICE_TREE),"")
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dts = $(if $(shell echo $(CONFIG_DEVICE_TREE) | grep '^/'),\
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,$(srctree)/$(src)/dts/)$(CONFIG_DEVICE_TREE:"%"=%)
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endif
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endif
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# Don't put the ramdisk on the pattern rule; when its missing make will try
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# the pattern rule with less dependencies that also matches (even with the
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# hard dependency listed).
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$(obj)/zImage.initrd.%: vmlinux $(wrapperbits) $(dts)
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$(call if_changed,wrap,$*,$(dts),,$(obj)/ramdisk.image.gz)
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$(obj)/zImage.%: vmlinux $(wrapperbits) $(dts)
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$(call if_changed,wrap,$*,$(dts))
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# This cannot be in the root of $(src) as the zImage rule always adds a $(obj)
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# prefix
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$(obj)/vmlinux.strip: vmlinux
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$(STRIP) -s -R .comment $< -o $@
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$(obj)/zImage.iseries: vmlinux
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$(STRIP) -s -R .comment $< -o $@
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$(obj)/zImage.ps3: vmlinux $(wrapper) $(wrapperbits) $(srctree)/$(src)/dts/ps3.dts
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$(STRIP) -s -R .comment $< -o vmlinux.strip
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$(call cmd,wrap,ps3,$(srctree)/$(src)/dts/ps3.dts,,)
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$(obj)/zImage.initrd.ps3: vmlinux $(wrapper) $(wrapperbits) $(srctree)/$(src)/dts/ps3.dts $(obj)/ramdisk.image.gz
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$(call cmd,wrap,ps3,$(srctree)/$(src)/dts/ps3.dts,,$(obj)/ramdisk.image.gz)
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$(obj)/uImage: vmlinux $(wrapperbits)
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$(call if_changed,wrap,uboot)
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$(obj)/cuImage.%: vmlinux $(dts) $(wrapperbits)
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$(call if_changed,wrap,cuboot-$*,$(dts))
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$(obj)/treeImage.initrd.%: vmlinux $(dts) $(wrapperbits)
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$(call if_changed,wrap,treeboot-$*,$(dts),,$(obj)/ramdisk.image.gz)
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$(obj)/treeImage.%: vmlinux $(dts) $(wrapperbits)
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$(call if_changed,wrap,treeboot-$*,$(dts))
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# If there isn't a platform selected then just strip the vmlinux.
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ifeq (,$(image-y))
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image-y := vmlinux.strip
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endif
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$(obj)/zImage: $(addprefix $(obj)/, $(image-y))
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@rm -f $@; ln $< $@
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$(obj)/zImage.initrd: $(addprefix $(obj)/, $(initrd-y))
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@rm -f $@; ln $< $@
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install: $(CONFIGURE) $(addprefix $(obj)/, $(image-y))
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sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $<
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# anything not in $(targets)
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clean-files += $(image-) $(initrd-) zImage zImage.initrd cuImage.* treeImage.* \
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otheros.bld
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# clean up files cached by wrapper
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clean-kernel := vmlinux.strip vmlinux.bin
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clean-kernel += $(addsuffix .gz,$(clean-kernel))
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# If not absolute clean-files are relative to $(obj).
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clean-files += $(addprefix $(objtree)/, $(clean-kernel))
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