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 oflib.c ofconsole.c \ 47 44x.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c cuboot.c 48src-plat := of.c cuboot-83xx.c cuboot-85xx.c holly.c \ 49 cuboot-ebony.c treeboot-ebony.c prpmc2800.c \ 50 ps3-head.S ps3-hvcall.S ps3.c 51src-boot := $(src-wlib) $(src-plat) empty.c 52 53src-boot := $(addprefix $(obj)/, $(src-boot)) 54obj-boot := $(addsuffix .o, $(basename $(src-boot))) 55obj-wlib := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-wlib)))) 56obj-plat := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-plat)))) 57 58quiet_cmd_copy_zlib = COPY $@ 59 cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@ 60 61quiet_cmd_copy_zlibheader = COPY $@ 62 cmd_copy_zlibheader = sed "s@<linux/\([^>]*\).*@\"\1\"@" $< > $@ 63# stddef.h for NULL 64quiet_cmd_copy_zliblinuxheader = COPY $@ 65 cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@ 66 67$(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/% 68 $(call cmd,copy_zlib) 69 70$(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/% 71 $(call cmd,copy_zlibheader) 72 73$(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/% 74 $(call cmd,copy_zliblinuxheader) 75 76$(obj)/empty.c: 77 @touch $@ 78 79$(obj)/zImage.lds $(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds: $(obj)/%: $(srctree)/$(src)/%.S 80 @cp $< $@ 81 82clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \ 83 empty.c zImage zImage.coff.lds zImage.ps3.lds zImage.lds 84 85quiet_cmd_bootcc = BOOTCC $@ 86 cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $< 87 88quiet_cmd_bootas = BOOTAS $@ 89 cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $< 90 91quiet_cmd_bootar = BOOTAR $@ 92 cmd_bootar = $(CROSS32AR) -cr $@.$$$$ $(filter-out FORCE,$^); mv $@.$$$$ $@ 93 94$(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c FORCE 95 $(call if_changed_dep,bootcc) 96$(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S FORCE 97 $(call if_changed_dep,bootas) 98 99$(obj)/wrapper.a: $(obj-wlib) FORCE 100 $(call if_changed,bootar) 101 102hostprogs-y := addnote addRamDisk hack-coff mktree 103 104targets += $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a) 105extra-y := $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \ 106 $(obj)/zImage.lds $(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds 107 108wrapper :=$(srctree)/$(src)/wrapper 109wrapperbits := $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) \ 110 $(wrapper) FORCE 111 112############# 113# Bits for building various flavours of zImage 114 115ifneq ($(CROSS32_COMPILE),) 116CROSSWRAP := -C "$(CROSS32_COMPILE)" 117else 118ifneq ($(CROSS_COMPILE),) 119CROSSWRAP := -C "$(CROSS_COMPILE)" 120endif 121endif 122 123# args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd 124quiet_cmd_wrap = WRAP $@ 125 cmd_wrap =$(CONFIG_SHELL) $(wrapper) -c -o $@ -p $2 $(CROSSWRAP) \ 126 $(if $3, -s $3)$(if $4, -d $4)$(if $5, -i $5) vmlinux 127 128image-$(CONFIG_PPC_PSERIES) += zImage.pseries 129image-$(CONFIG_PPC_MAPLE) += zImage.pseries 130image-$(CONFIG_PPC_IBM_CELL_BLADE) += zImage.pseries 131image-$(CONFIG_PPC_PS3) += zImage.ps3 132image-$(CONFIG_PPC_CELLEB) += zImage.pseries 133image-$(CONFIG_PPC_CHRP) += zImage.chrp 134image-$(CONFIG_PPC_EFIKA) += zImage.chrp 135image-$(CONFIG_PPC_PMAC) += zImage.pmac 136image-$(CONFIG_PPC_HOLLY) += zImage.holly 137image-$(CONFIG_PPC_PRPMC2800) += zImage.prpmc2800 138image-$(CONFIG_PPC_ISERIES) += zImage.iseries 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)): $(obj)/ramdisk.image.gz 160 161# If CONFIG_WANT_DEVICE_TREE is set and CONFIG_DEVICE_TREE isn't an 162# empty string, define 'dts' to be path to the dts 163# CONFIG_DEVICE_TREE will have "" around it, make sure to strip them 164ifeq ($(CONFIG_WANT_DEVICE_TREE),y) 165ifneq ($(CONFIG_DEVICE_TREE),"") 166dts = $(if $(shell echo $(CONFIG_DEVICE_TREE) | grep '^/'),\ 167 ,$(srctree)/$(src)/dts/)$(CONFIG_DEVICE_TREE:"%"=%) 168endif 169endif 170 171# Don't put the ramdisk on the pattern rule; when its missing make will try 172# the pattern rule with less dependencies that also matches (even with the 173# hard dependency listed). 174$(obj)/zImage.initrd.%: vmlinux $(wrapperbits) $(dts) 175 $(call if_changed,wrap,$*,$(dts),,$(obj)/ramdisk.image.gz) 176 177$(obj)/zImage.%: vmlinux $(wrapperbits) $(dts) 178 $(call if_changed,wrap,$*,$(dts)) 179 180# This cannot be in the root of $(src) as the zImage rule always adds a $(obj) 181# prefix 182$(obj)/vmlinux.strip: vmlinux 183 $(STRIP) -s -R .comment $< -o $@ 184 185$(obj)/zImage.iseries: vmlinux 186 $(STRIP) -s -R .comment $< -o $@ 187 188$(obj)/zImage.ps3: vmlinux $(wrapper) $(wrapperbits) $(srctree)/$(src)/dts/ps3.dts 189 $(STRIP) -s -R .comment $< -o vmlinux.strip 190 $(call cmd,wrap,ps3,$(srctree)/$(src)/dts/ps3.dts,,) 191 192$(obj)/zImage.initrd.ps3: vmlinux $(wrapper) $(wrapperbits) $(srctree)/$(src)/dts/ps3.dts $(obj)/ramdisk.image.gz 193 $(call cmd,wrap,ps3,$(srctree)/$(src)/dts/ps3.dts,,$(obj)/ramdisk.image.gz) 194 195$(obj)/uImage: vmlinux $(wrapperbits) 196 $(call if_changed,wrap,uboot) 197 198$(obj)/cuImage.%: vmlinux $(dts) $(wrapperbits) 199 $(call if_changed,wrap,cuboot-$*,$(dts)) 200 201$(obj)/treeImage.initrd.%: vmlinux $(dts) $(wrapperbits) 202 $(call if_changed,wrap,treeboot-$*,$(dts),,$(obj)/ramdisk.image.gz) 203 204$(obj)/treeImage.%: vmlinux $(dts) $(wrapperbits) 205 $(call if_changed,wrap,treeboot-$*,$(dts)) 206 207# If there isn't a platform selected then just strip the vmlinux. 208ifeq (,$(image-y)) 209image-y := vmlinux.strip 210endif 211 212$(obj)/zImage: $(addprefix $(obj)/, $(image-y)) 213 @rm -f $@; ln $< $@ 214$(obj)/zImage.initrd: $(addprefix $(obj)/, $(initrd-y)) 215 @rm -f $@; ln $< $@ 216 217install: $(CONFIGURE) $(addprefix $(obj)/, $(image-y)) 218 sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $< 219 220# anything not in $(targets) 221clean-files += $(image-) $(initrd-) zImage zImage.initrd cuImage.* treeImage.* \ 222 otheros.bld 223 224# clean up files cached by wrapper 225clean-kernel := vmlinux.strip vmlinux.bin 226clean-kernel += $(addsuffix .gz,$(clean-kernel)) 227# If not absolute clean-files are relative to $(obj). 228clean-files += $(addprefix $(objtree)/, $(clean-kernel)) 229