arch/powerpc/boot/Makefile

   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
  20 all: $(obj)/zImage
  21
  22 BOOTCFLAGS    := -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)
  26 BOOTAFLAGS      := -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc
  27
  28 ifeq ($(call cc-option-yn, -fstack-protector),y)
  29 BOOTCFLAGS      += -fno-stack-protector
  30 endif
  31
  32 BOOTCFLAGS      += -I$(obj) -I$(srctree)/$(obj)
  33
  34 $(obj)/44x.o: BOOTCFLAGS += -mcpu=440
  35 $(obj)/ebony.o: BOOTCFLAGS += -mcpu=440
  36
  37 zlib       := inffast.c inflate.c inftrees.c
  38 zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h
  39 zliblinuxheader := zlib.h zconf.h zutil.h
  40
  41 $(addprefix $(obj)/,$(zlib) gunzip_util.o main.o): \
  42         $(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader))
  43
  44 src-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
  48 src-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
  51 src-boot := $(src-wlib) $(src-plat) empty.c
  52
  53 src-boot := $(addprefix $(obj)/, $(src-boot))
  54 obj-boot := $(addsuffix .o, $(basename $(src-boot)))
  55 obj-wlib := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-wlib))))
  56 obj-plat := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-plat))))
  57
  58 quiet_cmd_copy_zlib = COPY    $@
  59       cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
  60
  61 quiet_cmd_copy_zlibheader = COPY    $@
  62       cmd_copy_zlibheader = sed "s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
  63 # stddef.h for NULL
  64 quiet_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
  82 clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \
  83                 empty.c zImage zImage.coff.lds zImage.ps3.lds zImage.lds
  84
  85 quiet_cmd_bootcc = BOOTCC  $@
  86       cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $<
  87
  88 quiet_cmd_bootas = BOOTAS  $@
  89       cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $<
  90
  91 quiet_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
 102 hostprogs-y     := addnote addRamDisk hack-coff mktree
 103
 104 targets         += $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a)
 105 extra-y         := $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \
 106                    $(obj)/zImage.lds $(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds
 107
 108 wrapper         :=$(srctree)/$(src)/wrapper
 109 wrapperbits     := $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) \
 110                         $(wrapper) FORCE
 111
 112 #############
 113 # Bits for building various flavours of zImage
 114
 115 ifneq ($(CROSS32_COMPILE),)
 116 CROSSWRAP := -C "$(CROSS32_COMPILE)"
 117 else
 118 ifneq ($(CROSS_COMPILE),)
 119 CROSSWRAP := -C "$(CROSS_COMPILE)"
 120 endif
 121 endif
 122
 123 # args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd
 124 quiet_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 $5) vmlinux
 127
 128 image-$(CONFIG_PPC_PSERIES)             += zImage.pseries
 129 image-$(CONFIG_PPC_MAPLE)               += zImage.pseries
 130 image-$(CONFIG_PPC_IBM_CELL_BLADE)      += zImage.pseries
 131 image-$(CONFIG_PPC_PS3)                 += zImage.ps3
 132 image-$(CONFIG_PPC_CELLEB)              += zImage.pseries
 133 image-$(CONFIG_PPC_CHRP)                += zImage.chrp
 134 image-$(CONFIG_PPC_EFIKA)               += zImage.chrp
 135 image-$(CONFIG_PPC_PMAC)                += zImage.pmac
 136 image-$(CONFIG_PPC_HOLLY)               += zImage.holly
 137 image-$(CONFIG_PPC_PRPMC2800)           += zImage.prpmc2800
 138 image-$(CONFIG_PPC_ISERIES)             += zImage.iseries
 139 image-$(CONFIG_DEFAULT_UIMAGE)          += uImage
 140
 141 ifneq ($(CONFIG_DEVICE_TREE),"")
 142 image-$(CONFIG_PPC_83xx)                += cuImage.83xx
 143 image-$(CONFIG_PPC_85xx)                += cuImage.85xx
 144 image-$(CONFIG_EBONY)                   += treeImage.ebony cuImage.ebony
 145 endif
 146
 147 # For 32-bit powermacs, build the COFF and miboot images
 148 # as well as the ELF images.
 149 ifeq ($(CONFIG_PPC32),y)
 150 image-$(CONFIG_PPC_PMAC)        += zImage.coff zImage.miboot
 151 endif
 152
 153 initrd-  := $(patsubst zImage%, zImage.initrd%, $(image-n) $(image-))
 154 initrd-y := $(patsubst zImage%, zImage.initrd%, \
 155                 $(patsubst treeImage%, treeImage.initrd%, $(image-y)))
 156 initrd-y := $(filter-out $(image-y), $(initrd-y))
 157 targets += $(image-y) $(initrd-y)
 158
 159 $(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz
 160
 161 # If CONFIG_WANT_DEVICE_TREE is set and CONFIG_DEVICE_TREE isn't an
 162 # empty string, define 'dts' to be path to the dts
 163 # CONFIG_DEVICE_TREE will have "" around it, make sure to strip them
 164 ifeq ($(CONFIG_WANT_DEVICE_TREE),y)
 165 ifneq ($(CONFIG_DEVICE_TREE),"")
 166 dts = $(if $(shell echo $(CONFIG_DEVICE_TREE) | grep '^/'),\
 167         ,$(srctree)/$(src)/dts/)$(CONFIG_DEVICE_TREE:"%"=%)
 168 endif
 169 endif
 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         $(call if_changed,wrap,treeboot-$*,$(dts))
 206
 207 # If there isn't a platform selected then just strip the vmlinux.
 208 ifeq (,$(image-y))
 209 image-y := vmlinux.strip
 210 endif
 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
 217 install: $(CONFIGURE) $(addprefix $(obj)/, $(image-y))
 218         sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $<
 219
 220 # anything not in $(targets)
 221 clean-files += $(image-) $(initrd-) zImage zImage.initrd cuImage.* treeImage.* \
 222         otheros.bld
 223
 224 # clean up files cached by wrapper
 225 clean-kernel := vmlinux.strip vmlinux.bin
 226 clean-kernel += $(addsuffix .gz,$(clean-kernel))
 227 # If not absolute clean-files are relative to $(obj).
 228 clean-files += $(addprefix $(objtree)/, $(clean-kernel))