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https://github.com/torvalds/linux
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ac18c673e7
This allows the zImage target to once again be used to build all supported image types, rather than requiring an explicit "make uImage" to avoid failing to create an unneeded cuImage. Signed-off-by: Scott Wood <scottwood@freescale.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
192 lines
6.5 KiB
Makefile
192 lines
6.5 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. These are normally HOSTCC,
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# but may be a third compiler if, for example, you are cross
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# compiling from an intel box. Once the 64bit ppc gcc is
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# stable it will probably simply be a compiler switch to
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# compile for 32bit mode.
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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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HOSTCC := gcc
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BOOTCFLAGS := $(HOSTCFLAGS) -fno-builtin -nostdinc -isystem \
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$(shell $(CROSS32CC) -print-file-name=include) -fPIC
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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)/$(obj)
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zlib := inffast.c inflate.c inftrees.c
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zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h
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zliblinuxheader := zlib.h zconf.h zutil.h
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$(addprefix $(obj)/,$(zlib) main.o): $(addprefix $(obj)/,$(zliblinuxheader)) \
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$(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
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src-plat := of.c cuboot-83xx.c cuboot-85xx.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)/%: $(srctree)/$(src)/%.S
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@cp $< $@
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clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \
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empty.c zImage.coff.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 $(obj)/zImage.coff.lds
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wrapper :=$(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_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-$(CONFIG_PPC_85xx) += cuImage.85xx
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endif
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# For 32-bit powermacs, build the COFF and miboot images
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# as well as the ELF images.
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ifeq ($(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%, $(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)): $(obj)/ramdisk.image.gz
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# Don't put the ramdisk on the pattern rule; when its missing make will try
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# the pattern rule with less dependencies that also matches (even with the
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# hard dependency listed).
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$(obj)/zImage.initrd.%: vmlinux $(wrapperbits)
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$(call if_changed,wrap,$*,,,$(obj)/ramdisk.image.gz)
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$(obj)/zImage.%: vmlinux $(wrapperbits)
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$(call if_changed,wrap,$*)
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$(obj)/zImage.ps3: vmlinux
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$(STRIP) -s -R .comment $< -o $@
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$(obj)/zImage.initrd.ps3: vmlinux
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@echo " WARNING zImage.initrd.ps3 not supported (yet)"
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$(obj)/uImage: vmlinux $(wrapperbits)
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$(call if_changed,wrap,uboot)
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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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$(obj)/cuImage.%: vmlinux $(wrapperbits)
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$(call if_changed,wrap,cuboot-$*,$(dts))
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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.*
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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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