b2c5f61920
This abstracts the operations used in the bootwrapper, and defines the operations needed for the bootwrapper to run on an OF platform. The operations have been divided up into platform ops (platform_ops), firmware ops (fw_ops), device tree ops (dt_ops), and console ops (console_ops). The proper operations will be hooked up at runtime to provide the functionality that you need. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
221 lines
8.1 KiB
Makefile
221 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. 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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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__ $(BOOTCFLAGS) -traditional -nostdinc
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OBJCOPYFLAGS := contents,alloc,load,readonly,data
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OBJCOPY_COFF_ARGS := -O aixcoff-rs6000 --set-start 0x500000
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OBJCOPY_MIB_ARGS := -O aixcoff-rs6000 -R .stab -R .stabstr -R .comment
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zlib := inffast.c inflate.c inftrees.c
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zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h
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zliblinuxheader := zlib.h zconf.h zutil.h
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$(addprefix $(obj)/,$(zlib) main.o): $(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader))
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#$(addprefix $(obj)/,main.o): $(addprefix $(obj)/,zlib.h)
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src-boot-$(CONFIG_PPC_MULTIPLATFORM) := of.c
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src-boot := crt0.S string.S stdio.c main.c div64.S $(src-boot-y)
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src-boot += $(zlib)
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src-boot := $(addprefix $(obj)/, $(src-boot))
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obj-boot := $(addsuffix .o, $(basename $(src-boot)))
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ifeq ($(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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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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clean-files := $(zlib) $(zlibheader) $(zliblinuxheader)
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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_bootld = BOOTLD $@
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cmd_bootld = $(CROSS32LD) -T $(srctree)/$(src)/$(3) -o $@ $(2)
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$(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c
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$(call if_changed_dep,bootcc)
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$(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S
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$(call if_changed_dep,bootas)
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#-----------------------------------------------------------
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# ELF sections within the zImage bootloader/wrapper
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#-----------------------------------------------------------
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required := vmlinux.strip
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initrd := initrd
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obj-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.o, $(section)))
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src-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.c, $(section)))
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gz-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.gz, $(section)))
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hostprogs-y := addnote addRamDisk hack-coff
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targets += zImage.vmode zImage.initrd.vmode zImage zImage.initrd \
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zImage.coff zImage.initrd.coff miboot.image miboot.initrd.image \
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$(patsubst $(obj)/%,%, $(call obj-sec, $(required) $(initrd))) \
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$(patsubst $(obj)/%,%, $(call src-sec, $(required) $(initrd))) \
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$(patsubst $(obj)/%,%, $(call gz-sec, $(required) $(initrd))) \
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vmlinux.initrd dummy.o
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extra-y := initrd.o
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quiet_cmd_ramdisk = RAMDISK $@
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cmd_ramdisk = $(obj)/addRamDisk $(obj)/ramdisk.image.gz $< $@
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quiet_cmd_stripvm = STRIP $@
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cmd_stripvm = $(STRIP) -s -R .comment $< -o $@
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vmlinux.strip: vmlinux
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$(call if_changed,stripvm)
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$(obj)/vmlinux.initrd: vmlinux.strip $(obj)/addRamDisk $(obj)/ramdisk.image.gz
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$(call if_changed,ramdisk)
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quiet_cmd_addsection = ADDSEC $@
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cmd_addsection = $(CROSS32OBJCOPY) $@ \
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--add-section=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $@))=$(patsubst %.o,%.gz, $@) \
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--set-section-flags=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $@))=$(OBJCOPYFLAGS)
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quiet_cmd_addnote = ADDNOTE $@
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cmd_addnote = $(obj)/addnote $@
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quiet_cmd_gen-miboot = GEN $@
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cmd_gen-miboot = $(OBJCOPY) $(OBJCOPY_MIB_ARGS) \
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--add-section=$1=$(word 2, $^) $< $@
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quiet_cmd_gencoff = COFF $@
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cmd_gencoff = $(OBJCOPY) $(OBJCOPY_COFF_ARGS) $@ && \
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$(obj)/hack-coff $@
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$(call gz-sec, $(required)): $(obj)/kernel-%.gz: %
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$(call if_changed,gzip)
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$(obj)/kernel-initrd.gz: $(obj)/ramdisk.image.gz
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cp -f $(obj)/ramdisk.image.gz $@
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$(call src-sec, $(required) $(initrd)): $(obj)/kernel-%.c: $(obj)/kernel-%.gz
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@touch $@
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$(call obj-sec, $(required) $(initrd)): $(obj)/kernel-%.o: $(obj)/kernel-%.c
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$(call if_changed_dep,bootcc)
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$(call cmd,addsection)
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$(obj)/zImage.vmode $(obj)/zImage.coff: obj-boot += $(call obj-sec, $(required))
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$(obj)/zImage.vmode: $(call obj-sec, $(required)) $(obj-boot) $(srctree)/$(src)/zImage.lds
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$(call cmd,bootld,$(obj-boot),zImage.lds)
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$(obj)/zImage.initrd.vmode $(obj)/zImage.initrd.coff: obj-boot += $(call obj-sec, $(required) $(initrd))
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$(obj)/zImage.initrd.vmode: $(call obj-sec, $(required) $(initrd)) $(obj-boot) $(srctree)/$(src)/zImage.lds
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$(call cmd,bootld,$(obj-boot),zImage.lds)
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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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coffimage-$(CONFIG_PPC_PMAC)-$(CONFIG_PPC32) := $(obj)/zImage.coff
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coffrdimg-$(CONFIG_PPC_PMAC)-$(CONFIG_PPC32) := $(obj)/zImage.initrd.coff
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mibootimg-$(CONFIG_PPC_PMAC)-$(CONFIG_PPC32) := $(obj)/miboot.image
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mibrdimg-$(CONFIG_PPC_PMAC)-$(CONFIG_PPC32) := $(obj)/miboot.initrd.image
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$(obj)/zImage: $(obj)/zImage.vmode $(obj)/addnote $(coffimage-y-y) \
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$(mibootimg-y-y)
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@cp -f $< $@
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$(call if_changed,addnote)
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$(obj)/zImage.initrd: $(obj)/zImage.initrd.vmode $(obj)/addnote \
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$(coffrdimg-y-y) $(mibrdimg-y-y)
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@cp -f $< $@
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$(call if_changed,addnote)
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$(obj)/zImage.coff: $(call obj-sec, $(required)) $(obj-boot) \
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$(srctree)/$(src)/zImage.coff.lds $(obj)/hack-coff
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$(call cmd,bootld,$(obj-boot),zImage.coff.lds)
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$(call cmd,gencoff)
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$(obj)/zImage.initrd.coff: $(call obj-sec, $(required) $(initrd)) $(obj-boot) \
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$(srctree)/$(src)/zImage.coff.lds $(obj)/hack-coff
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$(call cmd,bootld,$(obj-boot),zImage.coff.lds)
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$(call cmd,gencoff)
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$(obj)/miboot.image: $(obj)/dummy.o $(obj)/vmlinux.gz
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$(call cmd,gen-miboot,image)
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$(obj)/miboot.initrd.image: $(obj)/miboot.image $(images)/ramdisk.image.gz
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$(call cmd,gen-miboot,initrd)
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#-----------------------------------------------------------
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# build u-boot images
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#-----------------------------------------------------------
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quiet_cmd_mygzip = GZIP $@
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cmd_mygzip = gzip -f -9 < $< > $@.$$$$ && mv $@.$$$$ $@
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quiet_cmd_objbin = OBJCOPY $@
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cmd_objbin = $(OBJCOPY) -O binary $< $@
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quiet_cmd_uimage = UIMAGE $@
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cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A ppc -O linux -T kernel \
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-C gzip -a 00000000 -e 00000000 -n 'Linux-$(KERNELRELEASE)' \
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-d $< $@
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MKIMAGE := $(srctree)/scripts/mkuboot.sh
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targets += uImage
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extra-y += vmlinux.bin vmlinux.gz
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$(obj)/vmlinux.bin: vmlinux FORCE
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$(call if_changed,objbin)
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$(obj)/vmlinux.gz: $(obj)/vmlinux.bin FORCE
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$(call if_changed,mygzip)
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$(obj)/uImage: $(obj)/vmlinux.gz
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$(Q)rm -f $@
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$(call cmd,uimage)
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@echo -n ' Image: $@ '
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@if [ -f $@ ]; then echo 'is ready' ; else echo 'not made'; fi
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install: $(CONFIGURE) $(BOOTIMAGE)
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sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" "$(BOOTIMAGE)"
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clean-files += $(addprefix $(objtree)/, $(obj-boot) vmlinux.strip)
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