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. That's normally the same 15# compiler for the rest of the kernel, with the -m32 flag added. 16# To make it easier to setup a cross compiler, 17# CROSS32_COMPILE is setup as a prefix just like CROSS_COMPILE 18# in the toplevel makefile. 19 20all: $(obj)/zImage 21 22BOOTCFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ 23 -fno-strict-aliasing -Os -msoft-float -pipe \ 24 -fomit-frame-pointer -fno-builtin -fPIC -nostdinc \ 25 -isystem $(shell $(CROSS32CC) -print-file-name=include) 26BOOTAFLAGS := -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc 27 28ifeq ($(call cc-option-yn, -fstack-protector),y) 29BOOTCFLAGS += -fno-stack-protector 30endif 31 32BOOTCFLAGS += -I$(obj) -I$(srctree)/$(obj) 33 34$(obj)/44x.o: BOOTCFLAGS += -mcpu=440 35$(obj)/ebony.o: BOOTCFLAGS += -mcpu=440 36 37zlib := inffast.c inflate.c inftrees.c 38zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h 39zliblinuxheader := zlib.h zconf.h zutil.h 40 41$(addprefix $(obj)/,$(zlib) gunzip_util.o main.o): \ 42 $(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader)) 43 44src-wlib := string.S crt0.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \ 45 ns16550.c serial.c simple_alloc.c div64.S util.S \ 46 gunzip_util.c elf_util.c $(zlib) devtree.c \ 47 44x.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c 48src-plat := of.c cuboot-83xx.c cuboot-85xx.c holly.c \ 49 cuboot-ebony.c treeboot-ebony.c prpmc2800.c 50src-boot := $(src-wlib) $(src-plat) empty.c 51 52src-boot := $(addprefix $(obj)/, $(src-boot)) 53obj-boot := $(addsuffix .o, $(basename $(src-boot))) 54obj-wlib := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-wlib)))) 55obj-plat := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-plat)))) 56 57quiet_cmd_copy_zlib = COPY $@ 58 cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@ 59 60quiet_cmd_copy_zlibheader = COPY $@ 61 cmd_copy_zlibheader = sed "s@<linux/\([^>]*\).*@\"\1\"@" $< > $@ 62# stddef.h for NULL 63quiet_cmd_copy_zliblinuxheader = COPY $@ 64 cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@ 65 66$(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/% 67 $(call cmd,copy_zlib) 68 69$(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/% 70 $(call cmd,copy_zlibheader) 71 72$(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/% 73 $(call cmd,copy_zliblinuxheader) 74 75$(obj)/empty.c: 76 @touch $@ 77 78$(obj)/zImage.lds $(obj)/zImage.coff.lds: $(obj)/%: $(srctree)/$(src)/%.S 79 @cp $< $@ 80 81clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \ 82 empty.c zImage.coff.lds zImage.lds 83 84quiet_cmd_bootcc = BOOTCC $@ 85 cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $< 86 87quiet_cmd_bootas = BOOTAS $@ 88 cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $< 89 90quiet_cmd_bootar = BOOTAR $@ 91 cmd_bootar = $(CROSS32AR) -cr $@.$$$$ $(filter-out FORCE,$^); mv $@.$$$$ $@ 92 93$(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c FORCE 94 $(call if_changed_dep,bootcc) 95$(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S FORCE 96 $(call if_changed_dep,bootas) 97 98$(obj)/wrapper.a: $(obj-wlib) FORCE 99 $(call if_changed,bootar) 100 101hostprogs-y := addnote addRamDisk hack-coff mktree 102 103targets += $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a) 104extra-y := $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \ 105 $(obj)/zImage.lds $(obj)/zImage.coff.lds 106 107wrapper :=$(srctree)/$(src)/wrapper 108wrapperbits := $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) \ 109 $(wrapper) FORCE 110 111############# 112# Bits for building various flavours of zImage 113 114ifneq ($(CROSS32_COMPILE),) 115CROSSWRAP := -C "$(CROSS32_COMPILE)" 116else 117ifneq ($(CROSS_COMPILE),) 118CROSSWRAP := -C "$(CROSS_COMPILE)" 119endif 120endif 121 122# args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd 123quiet_cmd_wrap = WRAP $@ 124 cmd_wrap =$(CONFIG_SHELL) $(wrapper) -c -o $@ -p $2 $(CROSSWRAP) \ 125 $(if $3, -s $3)$(if $4, -d $4)$(if $5, -i $5) vmlinux 126 127image-$(CONFIG_PPC_PSERIES) += zImage.pseries 128image-$(CONFIG_PPC_MAPLE) += zImage.pseries 129image-$(CONFIG_PPC_IBM_CELL_BLADE) += zImage.pseries 130image-$(CONFIG_PPC_PS3) += zImage.ps3 131image-$(CONFIG_PPC_CELLEB) += zImage.pseries 132image-$(CONFIG_PPC_CHRP) += zImage.chrp 133image-$(CONFIG_PPC_EFIKA) += zImage.chrp 134image-$(CONFIG_PPC_PMAC) += zImage.pmac 135image-$(CONFIG_PPC_HOLLY) += zImage.holly-elf 136image-$(CONFIG_PPC_PRPMC2800) += zImage.prpmc2800 137image-$(CONFIG_PPC_ISERIES) += zImage.iseries 138image-$(CONFIG_DEFAULT_UIMAGE) += uImage 139 140ifneq ($(CONFIG_DEVICE_TREE),"") 141image-$(CONFIG_PPC_83xx) += cuImage.83xx 142image-$(CONFIG_PPC_85xx) += cuImage.85xx 143image-$(CONFIG_EBONY) += treeImage.ebony cuImage.ebony 144endif 145 146# For 32-bit powermacs, build the COFF and miboot images 147# as well as the ELF images. 148ifeq ($(CONFIG_PPC32),y) 149image-$(CONFIG_PPC_PMAC) += zImage.coff zImage.miboot 150endif 151 152initrd- := $(patsubst zImage%, zImage.initrd%, $(image-n) $(image-)) 153initrd-y := $(patsubst zImage%, zImage.initrd%, \ 154 $(patsubst treeImage%, treeImage.initrd%, $(image-y))) 155initrd-y := $(filter-out $(image-y), $(initrd-y)) 156targets += $(image-y) $(initrd-y) 157 158$(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz 159 160dts- := $(patsubst zImage%, zImage.dts%, $(image-n) $(image-)) 161dts-y := $(patsubst zImage%, zImage.dts%, $(image-y)) 162dts-y := $(filter-out $(image-y), $(dts-y)) 163targets += $(image-y) $(dts-y) 164 165dts_initrd- := $(patsubst zImage%, zImage.dts_initrd%, $(image-n) $(image-)) 166dts_initrd-y := $(patsubst zImage%, zImage.dts_initrd%, $(image-y)) 167dts_initrd-y := $(filter-out $(image-y), $(dts_initrd-y)) 168targets += $(image-y) $(dts_initrd-y) 169 170$(addprefix $(obj)/, $(dts_initrd-y)): $(obj)/ramdisk.image.gz 171 172# Don't put the ramdisk on the pattern rule; when its missing make will try 173# the pattern rule with less dependencies that also matches (even with the 174# hard dependency listed). 175$(obj)/zImage.dts_initrd.%: vmlinux $(wrapperbits) $(dts) $(obj)/ramdisk.image.gz 176 $(call if_changed,wrap,$*,$(dts),,$(obj)/ramdisk.image.gz) 177 178$(obj)/zImage.dts.%: vmlinux $(wrapperbits) $(dts) 179 $(call if_changed,wrap,$*,$(dts)) 180 181$(obj)/zImage.initrd.%: vmlinux $(wrapperbits) 182 $(call if_changed,wrap,$*,,,$(obj)/ramdisk.image.gz) 183 184$(obj)/zImage.%: vmlinux $(wrapperbits) 185 $(call if_changed,wrap,$*) 186 187$(obj)/zImage.iseries: vmlinux 188 $(STRIP) -s -R .comment $< -o $@ 189 190$(obj)/zImage.ps3: vmlinux 191 $(STRIP) -s -R .comment $< -o $@ 192 193$(obj)/zImage.initrd.ps3: vmlinux 194 @echo " WARNING zImage.initrd.ps3 not supported (yet)" 195 196$(obj)/zImage.holly-elf: vmlinux $(wrapperbits) 197 $(call if_changed,wrap,holly,$(obj)/dts/holly.dts,,) 198 199$(obj)/zImage.initrd.holly-elf: vmlinux $(wrapperbits) $(obj)/ramdisk.image.gz 200 $(call if_changed,wrap,holly,$(obj)/dts/holly.dts,,$(obj)/ramdisk.image.gz) 201 202$(obj)/uImage: vmlinux $(wrapperbits) 203 $(call if_changed,wrap,uboot) 204 205# CONFIG_DEVICE_TREE will have "" around it, make sure to strip them 206dts = $(if $(shell echo $(CONFIG_DEVICE_TREE) | grep '^/'),\ 207 ,$(srctree)/$(src)/dts/)$(CONFIG_DEVICE_TREE:"%"=%) 208 209$(obj)/cuImage.%: vmlinux $(dts) $(wrapperbits) 210 $(call if_changed,wrap,cuboot-$*,$(dts)) 211 212$(obj)/treeImage.initrd.%: vmlinux $(dts) $(wrapperbits) 213 $(call if_changed,wrap,treeboot-$*,$(dts),,$(obj)/ramdisk.image.gz) 214 215$(obj)/treeImage.%: vmlinux $(dts) $(wrapperbits) 216 $(call if_changed,wrap,treeboot-$*,$(dts)) 217 218$(obj)/zImage: $(addprefix $(obj)/, $(image-y)) 219 @rm -f $@; ln $< $@ 220$(obj)/zImage.initrd: $(addprefix $(obj)/, $(initrd-y)) 221 @rm -f $@; ln $< $@ 222$(obj)/zImage.dts: $(addprefix $(obj)/, $(dts-y)) 223 @rm -f $@; ln $< $@ 224$(obj)/zImage.dts_initrd: $(addprefix $(obj)/, $(dts_initrd-y)) 225 @rm -f $@; ln $< $@ 226 227 228install: $(CONFIGURE) $(addprefix $(obj)/, $(image-y)) 229 sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $< 230 231# anything not in $(targets) 232clean-files += $(image-) $(initrd-) zImage zImage.initrd cuImage.* \ 233 treeImage.* zImage.dts zImage.dts_initrd 234 235# clean up files cached by wrapper 236clean-kernel := vmlinux.strip vmlinux.bin 237clean-kernel += $(addsuffix .gz,$(clean-kernel)) 238# If not absolute clean-files are relative to $(obj). 239clean-files += $(addprefix $(objtree)/, $(clean-kernel)) 240