| # 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 := inffast.c inflate.c inftrees.c |
| zlibheader := inffast.h inffixed.h inflate.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@<linux/\([^>]\+\).*@\"\1\"@" $< > $@ |
| |
| quiet_cmd_copy_zlibheader = COPY $@ |
| cmd_copy_zlibheader = sed "s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@ |
| # stddef.h for NULL |
| quiet_cmd_copy_zliblinuxheader = COPY $@ |
| cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]\+\).*@\"\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) |
