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)/$(obj) 35 36$(obj)/44x.o: BOOTCFLAGS += -Wa,-mbooke 37$(obj)/ebony.o: BOOTCFLAGS += -Wa,-mbooke 38 39zlib := inffast.c inflate.c inftrees.c 40zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h 41zliblinuxheader := zlib.h zconf.h zutil.h 42 43$(addprefix $(obj)/,$(zlib) gunzip_util.o main.o): \ 44 $(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader)) 45 46src-wlib := string.S crt0.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \ 47 ns16550.c serial.c simple_alloc.c div64.S util.S \ 48 gunzip_util.c elf_util.c $(zlib) devtree.c \ 49 44x.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c 50src-plat := of.c cuboot-83xx.c cuboot-85xx.c holly.c \ 51 cuboot-ebony.c treeboot-ebony.c prpmc2800.c 52src-boot := $(src-wlib) $(src-plat) empty.c 53 54src-boot := $(addprefix $(obj)/, $(src-boot)) 55obj-boot := $(addsuffix .o, $(basename $(src-boot))) 56obj-wlib := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-wlib)))) 57obj-plat := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-plat)))) 58 59quiet_cmd_copy_zlib = COPY $@ 60 cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@ 61 62quiet_cmd_copy_zlibheader = COPY $@ 63 cmd_copy_zlibheader = sed "s@<linux/\([^>]*\).*@\"\1\"@" $< > $@ 64# stddef.h for NULL 65quiet_cmd_copy_zliblinuxheader = COPY $@ 66 cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@ 67 68$(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/% 69 $(call cmd,copy_zlib) 70 71$(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/% 72 $(call cmd,copy_zlibheader) 73 74$(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/% 75 $(call cmd,copy_zliblinuxheader) 76 77$(obj)/empty.c: 78 @touch $@ 79 80$(obj)/zImage.lds $(obj)/zImage.coff.lds: $(obj)/%: $(srctree)/$(src)/%.S 81 @cp $< $@ 82 83clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \ 84 empty.c zImage.coff.lds zImage.lds 85 86quiet_cmd_bootcc = BOOTCC $@ 87 cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $< 88 89quiet_cmd_bootas = BOOTAS $@ 90 cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $< 91 92quiet_cmd_bootar = BOOTAR $@ 93 cmd_bootar = $(CROSS32AR) -cr $@.$$$$ $(filter-out FORCE,$^); mv $@.$$$$ $@ 94 95$(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c FORCE 96 $(call if_changed_dep,bootcc) 97$(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S FORCE 98 $(call if_changed_dep,bootas) 99 100$(obj)/wrapper.a: $(obj-wlib) FORCE 101 $(call if_changed,bootar) 102 103hostprogs-y := addnote addRamDisk hack-coff mktree 104 105targets += $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a) 106extra-y := $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \ 107 $(obj)/zImage.lds $(obj)/zImage.coff.lds 108 109wrapper :=$(srctree)/$(src)/wrapper 110wrapperbits := $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) \ 111 $(wrapper) FORCE 112 113############# 114# Bits for building various flavours of zImage 115 116ifneq ($(CROSS32_COMPILE),) 117CROSSWRAP := -C "$(CROSS32_COMPILE)" 118else 119ifneq ($(CROSS_COMPILE),) 120CROSSWRAP := -C "$(CROSS_COMPILE)" 121endif 122endif 123 124# args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd 125quiet_cmd_wrap = WRAP $@ 126 cmd_wrap =$(CONFIG_SHELL) $(wrapper) -c -o $@ -p $2 $(CROSSWRAP) \ 127 $(if $3, -s $3)$(if $4, -d $4)$(if $5, -i $5) vmlinux 128 129image-$(CONFIG_PPC_PSERIES) += zImage.pseries 130image-$(CONFIG_PPC_MAPLE) += zImage.pseries 131image-$(CONFIG_PPC_IBM_CELL_BLADE) += zImage.pseries 132image-$(CONFIG_PPC_PS3) += zImage.ps3 133image-$(CONFIG_PPC_CELLEB) += zImage.pseries 134image-$(CONFIG_PPC_CHRP) += zImage.chrp 135image-$(CONFIG_PPC_EFIKA) += zImage.chrp 136image-$(CONFIG_PPC_PMAC) += zImage.pmac 137image-$(CONFIG_PPC_HOLLY) += zImage.holly-elf 138image-$(CONFIG_PPC_PRPMC2800) += zImage.prpmc2800 139image-$(CONFIG_DEFAULT_UIMAGE) += uImage 140 141ifneq ($(CONFIG_DEVICE_TREE),"") 142image-$(CONFIG_PPC_83xx) += cuImage.83xx 143image-$(CONFIG_PPC_85xx) += cuImage.85xx 144image-$(CONFIG_EBONY) += treeImage.ebony cuImage.ebony 145endif 146 147# For 32-bit powermacs, build the COFF and miboot images 148# as well as the ELF images. 149ifeq ($(CONFIG_PPC32),y) 150image-$(CONFIG_PPC_PMAC) += zImage.coff zImage.miboot 151endif 152 153initrd- := $(patsubst zImage%, zImage.initrd%, $(image-n) $(image-)) 154initrd-y := $(patsubst zImage%, zImage.initrd%, \ 155 $(patsubst treeImage%, treeImage.initrd%, $(image-y))) 156initrd-y := $(filter-out $(image-y), $(initrd-y)) 157targets += $(image-y) $(initrd-y) 158 159$(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz 160 161dts- := $(patsubst zImage%, zImage.dts%, $(image-n) $(image-)) 162dts-y := $(patsubst zImage%, zImage.dts%, $(image-y)) 163dts-y := $(filter-out $(image-y), $(dts-y)) 164targets += $(image-y) $(dts-y) 165 166dts_initrd- := $(patsubst zImage%, zImage.dts_initrd%, $(image-n) $(image-)) 167dts_initrd-y := $(patsubst zImage%, zImage.dts_initrd%, $(image-y)) 168dts_initrd-y := $(filter-out $(image-y), $(dts_initrd-y)) 169targets += $(image-y) $(dts_initrd-y) 170 171$(addprefix $(obj)/, $(dts_initrd-y)): $(obj)/ramdisk.image.gz 172 173# Don't put the ramdisk on the pattern rule; when its missing make will try 174# the pattern rule with less dependencies that also matches (even with the 175# hard dependency listed). 176$(obj)/zImage.dts_initrd.%: vmlinux $(wrapperbits) $(dts) $(obj)/ramdisk.image.gz 177 $(call if_changed,wrap,$*,$(dts),,$(obj)/ramdisk.image.gz) 178 179$(obj)/zImage.dts.%: vmlinux $(wrapperbits) $(dts) 180 $(call if_changed,wrap,$*,$(dts)) 181 182$(obj)/zImage.initrd.%: vmlinux $(wrapperbits) 183 $(call if_changed,wrap,$*,,,$(obj)/ramdisk.image.gz) 184 185$(obj)/zImage.%: vmlinux $(wrapperbits) 186 $(call if_changed,wrap,$*) 187 188$(obj)/zImage.ps3: vmlinux 189 $(STRIP) -s -R .comment $< -o $@ 190 191$(obj)/zImage.initrd.ps3: vmlinux 192 @echo " WARNING zImage.initrd.ps3 not supported (yet)" 193 194$(obj)/zImage.holly-elf: vmlinux $(wrapperbits) 195 $(call if_changed,wrap,holly,$(obj)/dts/holly.dts,,) 196 197$(obj)/zImage.initrd.holly-elf: vmlinux $(wrapperbits) $(obj)/ramdisk.image.gz 198 $(call if_changed,wrap,holly,$(obj)/dts/holly.dts,,$(obj)/ramdisk.image.gz) 199 200$(obj)/uImage: vmlinux $(wrapperbits) 201 $(call if_changed,wrap,uboot) 202 203# CONFIG_DEVICE_TREE will have "" around it, make sure to strip them 204dts = $(if $(shell echo $(CONFIG_DEVICE_TREE) | grep '^/'),\ 205 ,$(srctree)/$(src)/dts/)$(CONFIG_DEVICE_TREE:"%"=%) 206 207$(obj)/cuImage.%: vmlinux $(dts) $(wrapperbits) 208 $(call if_changed,wrap,cuboot-$*,$(dts)) 209 210$(obj)/treeImage.initrd.%: vmlinux $(dts) $(wrapperbits) 211 $(call if_changed,wrap,treeboot-$*,$(dts),,$(obj)/ramdisk.image.gz) 212 213$(obj)/treeImage.%: vmlinux $(dts) $(wrapperbits) 214 $(call if_changed,wrap,treeboot-$*,$(dts)) 215 216$(obj)/zImage: $(addprefix $(obj)/, $(image-y)) 217 @rm -f $@; ln $< $@ 218$(obj)/zImage.initrd: $(addprefix $(obj)/, $(initrd-y)) 219 @rm -f $@; ln $< $@ 220$(obj)/zImage.dts: $(addprefix $(obj)/, $(dts-y)) 221 @rm -f $@; ln $< $@ 222$(obj)/zImage.dts_initrd: $(addprefix $(obj)/, $(dts_initrd-y)) 223 @rm -f $@; ln $< $@ 224 225 226install: $(CONFIGURE) $(addprefix $(obj)/, $(image-y)) 227 sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $< 228 229# anything not in $(targets) 230clean-files += $(image-) $(initrd-) zImage zImage.initrd cuImage.* \ 231 treeImage.* zImage.dts zImage.dts_initrd 232 233# clean up files cached by wrapper 234clean-kernel := vmlinux.strip vmlinux.bin 235clean-kernel += $(addsuffix .gz,$(clean-kernel)) 236# If not absolute clean-files are relative to $(obj). 237clean-files += $(addprefix $(objtree)/, $(clean-kernel)) 238