# Makefile for making ELF bootable images for booting on CHRP # using Open Firmware. # # Geert Uytterhoeven September 1997 # # Based on coffboot by Paul Mackerras # Simplified for ppc64 by Todd Inglett # # NOTE: this code is built for 32 bit in ELF32 format even though # it packages a 64 bit kernel. We do this to simplify the # bootloader and increase compatibility with OpenFirmware. # # To this end we need to define BOOTCC, etc, as the tools # needed to build the 32 bit image. These are normally HOSTCC, # but may be a third compiler if, for example, you are cross # compiling from an intel box. Once the 64bit ppc gcc is # stable it will probably simply be a compiler switch to # compile for 32bit mode. # To make it easier to setup a cross compiler, # CROSS32_COMPILE is setup as a prefix just like CROSS_COMPILE # in the toplevel makefile. HOSTCC := gcc BOOTCFLAGS := $(HOSTCFLAGS) -fno-builtin -nostdinc -isystem \ $(shell $(CROSS32CC) -print-file-name=include) -fPIC BOOTAFLAGS := -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc OBJCOPYFLAGS := contents,alloc,load,readonly,data OBJCOPY_COFF_ARGS := -O aixcoff-rs6000 --set-start 0x500000 OBJCOPY_MIB_ARGS := -O aixcoff-rs6000 -R .stab -R .stabstr -R .comment zlib := infblock.c infcodes.c inffast.c inflate.c inftrees.c infutil.c zlibheader := infblock.h infcodes.h inffast.h inftrees.h infutil.h zliblinuxheader := zlib.h zconf.h zutil.h $(addprefix $(obj)/,$(zlib) main.o): $(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader)) #$(addprefix $(obj)/,main.o): $(addprefix $(obj)/,zlib.h) src-boot := crt0.S string.S prom.c stdio.c main.c div64.S src-boot += $(zlib) src-boot := $(addprefix $(obj)/, $(src-boot)) obj-boot := $(addsuffix .o, $(basename $(src-boot))) BOOTCFLAGS += -I$(obj) -I$(srctree)/$(obj) quiet_cmd_copy_zlib = COPY $@ cmd_copy_zlib = sed "s@__attribute_used__@@;s@]\+\).*@\"\1\"@" $< > $@ quiet_cmd_copy_zlibheader = COPY $@ cmd_copy_zlibheader = sed "s@]\+\).*@\"\1\"@" $< > $@ # stddef.h for NULL quiet_cmd_copy_zliblinuxheader = COPY $@ cmd_copy_zliblinuxheader = sed "s@@\"string.h\"@;s@@@;s@]\+\).*@\"\1\"@" $< > $@ $(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/% $(call cmd,copy_zlib) $(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/% $(call cmd,copy_zlibheader) $(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/% $(call cmd,copy_zliblinuxheader) clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) quiet_cmd_bootcc = BOOTCC $@ cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $< quiet_cmd_bootas = BOOTAS $@ cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $< quiet_cmd_bootld = BOOTLD $@ cmd_bootld = $(CROSS32LD) -T $(srctree)/$(src)/$(3) -o $@ $(2) $(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c $(call if_changed_dep,bootcc) $(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S $(call if_changed_dep,bootas) #----------------------------------------------------------- # ELF sections within the zImage bootloader/wrapper #----------------------------------------------------------- required := vmlinux.strip initrd := initrd obj-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.o, $(section))) src-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.c, $(section))) gz-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.gz, $(section))) hostprogs-y := addnote addRamDisk hack-coff targets += zImage.vmode zImage.initrd.vmode zImage zImage.initrd \ zImage.coff zImage.initrd.coff miboot.image miboot.initrd.image \ $(patsubst $(obj)/%,%, $(call obj-sec, $(required) $(initrd))) \ $(patsubst $(obj)/%,%, $(call src-sec, $(required) $(initrd))) \ $(patsubst $(obj)/%,%, $(call gz-sec, $(required) $(initrd))) \ vmlinux.initrd dummy.o extra-y := initrd.o quiet_cmd_ramdisk = RAMDISK $@ cmd_ramdisk = $(obj)/addRamDisk $(obj)/ramdisk.image.gz $< $@ quiet_cmd_stripvm = STRIP $@ cmd_stripvm = $(STRIP) -s -R .comment $< -o $@ vmlinux.strip: vmlinux $(call if_changed,stripvm) $(obj)/vmlinux.initrd: vmlinux.strip $(obj)/addRamDisk $(obj)/ramdisk.image.gz $(call if_changed,ramdisk) quiet_cmd_addsection = ADDSEC $@ cmd_addsection = $(CROSS32OBJCOPY) $@ \ --add-section=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $@))=$(patsubst %.o,%.gz, $@) \ --set-section-flags=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $@))=$(OBJCOPYFLAGS) quiet_cmd_addnote = ADDNOTE $@ cmd_addnote = $(obj)/addnote $@ quiet_cmd_gen-miboot = GEN $@ cmd_gen-miboot = $(OBJCOPY) $(OBJCOPY_MIB_ARGS) \ --add-section=$1=$(word 2, $^) $< $@ quiet_cmd_gencoff = COFF $@ cmd_gencoff = $(OBJCOPY) $(OBJCOPY_COFF_ARGS) $@ && \ $(obj)/hack-coff $@ $(call gz-sec, $(required)): $(obj)/kernel-%.gz: % $(call if_changed,gzip) $(obj)/kernel-initrd.gz: $(obj)/ramdisk.image.gz cp -f $(obj)/ramdisk.image.gz $@ $(call src-sec, $(required) $(initrd)): $(obj)/kernel-%.c: $(obj)/kernel-%.gz @touch $@ $(call obj-sec, $(required) $(initrd)): $(obj)/kernel-%.o: $(obj)/kernel-%.c $(call if_changed_dep,bootcc) $(call cmd,addsection) $(obj)/zImage.vmode $(obj)/zImage.coff: obj-boot += $(call obj-sec, $(required)) $(obj)/zImage.vmode: $(call obj-sec, $(required)) $(obj-boot) $(srctree)/$(src)/zImage.lds $(call cmd,bootld,$(obj-boot),zImage.lds) $(obj)/zImage.initrd.vmode $(obj)/zImage.initrd.coff: obj-boot += $(call obj-sec, $(required) $(initrd)) $(obj)/zImage.initrd.vmode: $(call obj-sec, $(required) $(initrd)) $(obj-boot) $(srctree)/$(src)/zImage.lds $(call cmd,bootld,$(obj-boot),zImage.lds) # For 32-bit powermacs, build the COFF and miboot images # as well as the ELF images. coffimage-$(CONFIG_PPC_PMAC)-$(CONFIG_PPC32) := $(obj)/zImage.coff coffrdimg-$(CONFIG_PPC_PMAC)-$(CONFIG_PPC32) := $(obj)/zImage.initrd.coff mibootimg-$(CONFIG_PPC_PMAC)-$(CONFIG_PPC32) := $(obj)/miboot.image mibrdimg-$(CONFIG_PPC_PMAC)-$(CONFIG_PPC32) := $(obj)/miboot.initrd.image $(obj)/zImage: $(obj)/zImage.vmode $(obj)/addnote $(coffimage-y-y) \ $(mibootimg-y-y) @cp -f $< $@ $(call if_changed,addnote) $(obj)/zImage.initrd: $(obj)/zImage.initrd.vmode $(obj)/addnote \ $(coffrdimg-y-y) $(mibrdimg-y-y) @cp -f $< $@ $(call if_changed,addnote) $(obj)/zImage.coff: $(call obj-sec, $(required)) $(obj-boot) \ $(srctree)/$(src)/zImage.coff.lds $(obj)/hack-coff $(call cmd,bootld,$(obj-boot),zImage.coff.lds) $(call cmd,gencoff) $(obj)/zImage.initrd.coff: $(call obj-sec, $(required) $(initrd)) $(obj-boot) \ $(srctree)/$(src)/zImage.coff.lds $(obj)/hack-coff $(call cmd,bootld,$(obj-boot),zImage.coff.lds) $(call cmd,gencoff) $(obj)/miboot.image: $(obj)/dummy.o $(obj)/vmlinux.gz $(call cmd,gen-miboot,image) $(obj)/miboot.initrd.image: $(obj)/miboot.image $(images)/ramdisk.image.gz $(call cmd,gen-miboot,initrd) #----------------------------------------------------------- # build u-boot images #----------------------------------------------------------- quiet_cmd_mygzip = GZIP $@ cmd_mygzip = gzip -f -9 < $< > $@.$$$$ && mv $@.$$$$ $@ quiet_cmd_objbin = OBJCOPY $@ cmd_objbin = $(OBJCOPY) -O binary $< $@ quiet_cmd_uimage = UIMAGE $@ cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A ppc -O linux -T kernel \ -C gzip -a 00000000 -e 00000000 -n 'Linux-$(KERNELRELEASE)' \ -d $< $@ MKIMAGE := $(srctree)/scripts/mkuboot.sh targets += uImage extra-y += vmlinux.bin vmlinux.gz $(obj)/vmlinux.bin: vmlinux FORCE $(call if_changed,objbin) $(obj)/vmlinux.gz: $(obj)/vmlinux.bin FORCE $(call if_changed,mygzip) $(obj)/uImage: $(obj)/vmlinux.gz $(Q)rm -f $@ $(call cmd,uimage) @echo -n ' Image: $@ ' @if [ -f $@ ]; then echo 'is ready' ; else echo 'not made'; fi install: $(CONFIGURE) $(BOOTIMAGE) sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" "$(BOOTIMAGE)" clean-files += $(addprefix $(objtree)/, $(obj-boot) vmlinux.strip)