1# Makefile for making ELF bootable images for booting on CHRP 2# using Open Firmware. 3# 4# Geert Uytterhoeven September 1997 5# 6# Based on coffboot by Paul Mackerras 7# Simplified for ppc64 by Todd Inglett 8# 9# NOTE: this code is built for 32 bit in ELF32 format even though 10# it packages a 64 bit kernel. We do this to simplify the 11# bootloader and increase compatibility with OpenFirmware. 12# 13# To this end we need to define BOOTCC, etc, as the tools 14# needed to build the 32 bit image. These are normally HOSTCC, 15# but may be a third compiler if, for example, you are cross 16# compiling from an intel box. Once the 64bit ppc gcc is 17# stable it will probably simply be a compiler switch to 18# compile for 32bit mode. 19# To make it easier to setup a cross compiler, 20# CROSS32_COMPILE is setup as a prefix just like CROSS_COMPILE 21# in the toplevel makefile. 22 23all: $(obj)/zImage 24 25HOSTCC := gcc 26BOOTCFLAGS := $(HOSTCFLAGS) -fno-builtin -nostdinc -isystem \ 27 $(shell $(CROSS32CC) -print-file-name=include) -fPIC 28BOOTAFLAGS := -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc 29 30ifeq ($(call cc-option-yn, -fstack-protector),y) 31BOOTCFLAGS += -fno-stack-protector 32endif 33 34BOOTCFLAGS += -I$(obj) -I$(srctree)/$(obj) 35 36zlib := inffast.c inflate.c inftrees.c 37zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h 38zliblinuxheader := zlib.h zconf.h zutil.h 39 40$(addprefix $(obj)/,$(zlib) main.o): $(addprefix $(obj)/,$(zliblinuxheader)) \ 41 $(addprefix $(obj)/,$(zlibheader)) 42 43src-wlib := string.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \ 44 ns16550.c serial.c simple_alloc.c div64.S util.S $(zlib) 45src-plat := of.c 46src-boot := crt0.S $(src-wlib) $(src-plat) empty.c 47 48src-boot := $(addprefix $(obj)/, $(src-boot)) 49obj-boot := $(addsuffix .o, $(basename $(src-boot))) 50obj-wlib := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-wlib)))) 51obj-plat := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-plat)))) 52 53quiet_cmd_copy_zlib = COPY $@ 54 cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@ 55 56quiet_cmd_copy_zlibheader = COPY $@ 57 cmd_copy_zlibheader = sed "s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@ 58# stddef.h for NULL 59quiet_cmd_copy_zliblinuxheader = COPY $@ 60 cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@ 61 62$(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/% 63 $(call cmd,copy_zlib) 64 65$(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/% 66 $(call cmd,copy_zlibheader) 67 68$(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/% 69 $(call cmd,copy_zliblinuxheader) 70 71$(obj)/empty.c: 72 @touch $@ 73 74$(obj)/zImage.lds $(obj)/zImage.coff.lds: $(obj)/%: $(srctree)/$(src)/%.S 75 @cp $< $@ 76 77clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \ 78 empty.c zImage zImage.coff.lds zImage.lds zImage.sandpoint 79 80quiet_cmd_bootcc = BOOTCC $@ 81 cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $< 82 83quiet_cmd_bootas = BOOTAS $@ 84 cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $< 85 86quiet_cmd_bootar = BOOTAR $@ 87 cmd_bootar = $(CROSS32AR) -cr $@.$$$$ $^; mv $@.$$$$ $@ 88 89$(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c 90 $(call if_changed_dep,bootcc) 91$(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S 92 $(call if_changed_dep,bootas) 93 94$(obj)/wrapper.a: $(obj-wlib) 95 $(call cmd,bootar) 96 97hostprogs-y := addnote addRamDisk hack-coff mktree 98 99extra-y := $(obj)/crt0.o $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \ 100 $(obj)/zImage.lds $(obj)/zImage.coff.lds 101 102wrapper :=$(srctree)/$(src)/wrapper 103wrapperbits := $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) 104 105############# 106# Bits for building various flavours of zImage 107 108ifneq ($(CROSS32_COMPILE),) 109CROSSWRAP := -C "$(CROSS32_COMPILE)" 110else 111ifneq ($(CROSS_COMPILE),) 112CROSSWRAP := -C "$(CROSS_COMPILE)" 113endif 114endif 115 116quiet_cmd_wrap = WRAP $@ 117 cmd_wrap =$(CONFIG_SHELL) $(wrapper) -c -o $@ -p $2 $(CROSSWRAP) vmlinux 118quiet_cmd_wrap_initrd = WRAP $@ 119 cmd_wrap_initrd =$(CONFIG_SHELL) $(wrapper) -c -o $@ -p $2 $(CROSSWRAP) \ 120 -i $(obj)/ramdisk.image.gz vmlinux 121 122$(obj)/zImage.chrp: vmlinux $(wrapperbits) 123 $(call cmd,wrap,chrp) 124 125$(obj)/zImage.initrd.chrp: vmlinux $(wrapperbits) 126 $(call cmd,wrap_initrd,chrp) 127 128$(obj)/zImage.pseries: vmlinux $(wrapperbits) 129 $(call cmd,wrap,pseries) 130 131$(obj)/zImage.initrd.pseries: vmlinux $(wrapperbits) 132 $(call cmd,wrap_initrd,pseries) 133 134$(obj)/zImage.pmac: vmlinux $(wrapperbits) 135 $(call cmd,wrap,pmac) 136 137$(obj)/zImage.initrd.pmac: vmlinux $(wrapperbits) 138 $(call cmd,wrap_initrd,pmac) 139 140$(obj)/zImage.coff: vmlinux $(wrapperbits) 141 $(call cmd,wrap,pmaccoff) 142 143$(obj)/zImage.initrd.coff: vmlinux $(wrapperbits) 144 $(call cmd,wrap_initrd,pmaccoff) 145 146$(obj)/zImage.miboot: vmlinux $(wrapperbits) 147 $(call cmd,wrap,miboot) 148 149$(obj)/zImage.initrd.miboot: vmlinux $(wrapperbits) 150 $(call cmd,wrap_initrd,miboot) 151 152$(obj)/zImage.ps3: vmlinux 153 $(STRIP) -s -R .comment $< -o $@ 154 155$(obj)/zImage.initrd.ps3: vmlinux 156 @echo " WARNING zImage.initrd.ps3 not supported (yet)" 157 158$(obj)/uImage: vmlinux $(wrapperbits) 159 $(call cmd,wrap,uboot) 160 161image-$(CONFIG_PPC_PSERIES) += zImage.pseries 162image-$(CONFIG_PPC_MAPLE) += zImage.pseries 163image-$(CONFIG_PPC_IBM_CELL_BLADE) += zImage.pseries 164image-$(CONFIG_PPC_PS3) += zImage.ps3 165image-$(CONFIG_PPC_CELLEB) += zImage.pseries 166image-$(CONFIG_PPC_CHRP) += zImage.chrp 167image-$(CONFIG_PPC_EFIKA) += zImage.chrp 168image-$(CONFIG_PPC_PMAC) += zImage.pmac 169image-$(CONFIG_DEFAULT_UIMAGE) += uImage 170 171# For 32-bit powermacs, build the COFF and miboot images 172# as well as the ELF images. 173ifeq ($(CONFIG_PPC32),y) 174image-$(CONFIG_PPC_PMAC) += zImage.coff zImage.miboot 175endif 176 177initrd-y := $(patsubst zImage%, zImage.initrd%, $(image-y)) 178 179$(obj)/zImage: $(addprefix $(obj)/, $(image-y)) 180 @rm -f $@; ln $< $@ 181$(obj)/zImage.initrd: $(addprefix $(obj)/, $(initrd-y)) 182 @rm -f $@; ln $< $@ 183 184install: $(CONFIGURE) $(image-y) 185 sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $< 186 187clean-files += $(addprefix $(objtree)/, $(obj-boot) vmlinux.strip.gz) 188clean-files += $(addprefix $(objtree)/, $(obj-boot) vmlinux.bin.gz) 189clean-files += $(image-) 190