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)/4xx.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                 4xx.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c cuboot.c bamboo.c \
  48                 cpm-serial.c stdlib.c
  49 src-plat := of.c cuboot-83xx.c cuboot-85xx.c holly.c \
  50                 cuboot-ebony.c treeboot-ebony.c prpmc2800.c \
  51                 ps3-head.S ps3-hvcall.S ps3.c treeboot-bamboo.c cuboot-8xx.c \
  52                 cuboot-pq2.c cuboot-sequoia.c treeboot-walnut.c cuboot-bamboo.c
  53 src-boot := $(src-wlib) $(src-plat) empty.c
  54
  55 src-boot := $(addprefix $(obj)/, $(src-boot))
  56 obj-boot := $(addsuffix .o, $(basename $(src-boot)))
  57 obj-wlib := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-wlib))))
  58 obj-plat := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-plat))))
  59
  60 quiet_cmd_copy_zlib = COPY    $@
  61       cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
  62
  63 quiet_cmd_copy_zlibheader = COPY    $@
  64       cmd_copy_zlibheader = sed "s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
  65 # stddef.h for NULL
  66 quiet_cmd_copy_zliblinuxheader = COPY    $@
  67       cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
  68
  69 $(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
  70         $(call cmd,copy_zlib)
  71
  72 $(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
  73         $(call cmd,copy_zlibheader)
  74
  75 $(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/%
  76         $(call cmd,copy_zliblinuxheader)
  77
  78 $(obj)/empty.c:
  79         @touch $@
  80
  81 $(obj)/zImage.lds $(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds: $(obj)/%: $(srctree)/$(src)/%.S
  82         @cp $< $@
  83
  84 clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \
  85                 empty.c zImage zImage.coff.lds zImage.ps3.lds zImage.lds
  86
  87 quiet_cmd_bootcc = BOOTCC  $@
  88       cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $<
  89
  90 quiet_cmd_bootas = BOOTAS  $@
  91       cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $<
  92
  93 quiet_cmd_bootar = BOOTAR  $@
  94       cmd_bootar = $(CROSS32AR) -cr $@.$$$$ $(filter-out FORCE,$^); mv $@.$$$$ $@
  95
  96 $(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c FORCE
  97         $(call if_changed_dep,bootcc)
  98 $(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S FORCE
  99         $(call if_changed_dep,bootas)
 100
 101 $(obj)/wrapper.a: $(obj-wlib) FORCE
 102         $(call if_changed,bootar)
 103
 104 hostprogs-y     := addnote addRamDisk hack-coff mktree
 105
 106 targets         += $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a)
 107 extra-y         := $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \
 108                    $(obj)/zImage.lds $(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds
 109
 110 wrapper         :=$(srctree)/$(src)/wrapper
 111 wrapperbits     := $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) \
 112                         $(wrapper) FORCE
 113
 114 #############
 115 # Bits for building various flavours of zImage
 116
 117 ifneq ($(CROSS32_COMPILE),)
 118 CROSSWRAP := -C "$(CROSS32_COMPILE)"
 119 else
 120 ifneq ($(CROSS_COMPILE),)
 121 CROSSWRAP := -C "$(CROSS_COMPILE)"
 122 endif
 123 endif
 124
 125 # args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd
 126 quiet_cmd_wrap  = WRAP    $@
 127       cmd_wrap  =$(CONFIG_SHELL) $(wrapper) -c -o $@ -p $2 $(CROSSWRAP) \
 128                 $(if $3, -s $3)$(if $4, -d $4)$(if $5, -i $5) vmlinux
 129
 130 image-$(CONFIG_PPC_PSERIES)             += zImage.pseries
 131 image-$(CONFIG_PPC_MAPLE)               += zImage.pseries
 132 image-$(CONFIG_PPC_IBM_CELL_BLADE)      += zImage.pseries
 133 image-$(CONFIG_PPC_PS3)                 += zImage.ps3
 134 image-$(CONFIG_PPC_CELLEB)              += zImage.pseries
 135 image-$(CONFIG_PPC_CHRP)                += zImage.chrp
 136 image-$(CONFIG_PPC_EFIKA)               += zImage.chrp
 137 image-$(CONFIG_PPC_PMAC)                += zImage.pmac
 138 image-$(CONFIG_PPC_HOLLY)               += zImage.holly
 139 image-$(CONFIG_PPC_PRPMC2800)           += zImage.prpmc2800
 140 image-$(CONFIG_PPC_ISERIES)             += zImage.iseries
 141 image-$(CONFIG_DEFAULT_UIMAGE)          += uImage
 142
 143 ifneq ($(CONFIG_DEVICE_TREE),"")
 144 image-$(CONFIG_PPC_8xx)                 += cuImage.8xx
 145 image-$(CONFIG_8260)                    += cuImage.pq2
 146 image-$(CONFIG_PPC_83xx)                += cuImage.83xx
 147 image-$(CONFIG_PPC_85xx)                += cuImage.85xx
 148 image-$(CONFIG_EBONY)                   += treeImage.ebony cuImage.ebony
 149 image-$(CONFIG_BAMBOO)                  += treeImage.bamboo cuImage.bamboo
 150 image-$(CONFIG_SEQUOIA)                 += cuImage.sequoia
 151 image-$(CONFIG_WALNUT)                  += treeImage.walnut
 152 endif
 153
 154 # For 32-bit powermacs, build the COFF and miboot images
 155 # as well as the ELF images.
 156 ifeq ($(CONFIG_PPC32),y)
 157 image-$(CONFIG_PPC_PMAC)        += zImage.coff zImage.miboot
 158 endif
 159
 160 initrd-  := $(patsubst zImage%, zImage.initrd%, $(image-n) $(image-))
 161 initrd-y := $(patsubst zImage%, zImage.initrd%, \
 162                 $(patsubst treeImage%, treeImage.initrd%, $(image-y)))
 163 initrd-y := $(filter-out $(image-y), $(initrd-y))
 164 targets += $(image-y) $(initrd-y)
 165
 166 $(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz
 167
 168 # If CONFIG_WANT_DEVICE_TREE is set and CONFIG_DEVICE_TREE isn't an
 169 # empty string, define 'dts' to be path to the dts
 170 # CONFIG_DEVICE_TREE will have "" around it, make sure to strip them
 171 ifeq ($(CONFIG_WANT_DEVICE_TREE),y)
 172 ifneq ($(CONFIG_DEVICE_TREE),"")
 173 dts = $(if $(shell echo $(CONFIG_DEVICE_TREE) | grep '^/'),\
 174         ,$(srctree)/$(src)/dts/)$(CONFIG_DEVICE_TREE:"%"=%)
 175 endif
 176 endif
 177
 178 # Don't put the ramdisk on the pattern rule; when its missing make will try
 179 # the pattern rule with less dependencies that also matches (even with the
 180 # hard dependency listed).
 181 $(obj)/zImage.initrd.%: vmlinux $(wrapperbits) $(dts)
 182         $(call if_changed,wrap,$*,$(dts),,$(obj)/ramdisk.image.gz)
 183
 184 $(obj)/zImage.%: vmlinux $(wrapperbits) $(dts)
 185         $(call if_changed,wrap,$*,$(dts))
 186
 187 # This cannot be in the root of $(src) as the zImage rule always adds a $(obj)
 188 # prefix
 189 $(obj)/vmlinux.strip: vmlinux
 190         $(STRIP) -s -R .comment $< -o $@
 191
 192 $(obj)/zImage.iseries: vmlinux
 193         $(STRIP) -s -R .comment $< -o $@
 194
 195 $(obj)/zImage.ps3: vmlinux  $(wrapper) $(wrapperbits) $(srctree)/$(src)/dts/ps3.dts
 196         $(STRIP) -s -R .comment $< -o vmlinux.strip
 197         $(call cmd,wrap,ps3,$(srctree)/$(src)/dts/ps3.dts,,)
 198
 199 $(obj)/zImage.initrd.ps3: vmlinux  $(wrapper) $(wrapperbits) $(srctree)/$(src)/dts/ps3.dts $(obj)/ramdisk.image.gz
 200         $(call cmd,wrap,ps3,$(srctree)/$(src)/dts/ps3.dts,,$(obj)/ramdisk.image.gz)
 201
 202 $(obj)/uImage: vmlinux $(wrapperbits)
 203         $(call if_changed,wrap,uboot)
 204
 205 $(obj)/cuImage.%: vmlinux $(dts) $(wrapperbits)
 206         $(call if_changed,wrap,cuboot-$*,$(dts))
 207
 208 $(obj)/treeImage.initrd.%: vmlinux $(dts) $(wrapperbits)
 209         $(call if_changed,wrap,treeboot-$*,$(dts),,$(obj)/ramdisk.image.gz)
 210
 211 $(obj)/treeImage.%: vmlinux $(dts) $(wrapperbits)
 212         $(call if_changed,wrap,treeboot-$*,$(dts))
 213
 214 # If there isn't a platform selected then just strip the vmlinux.
 215 ifeq (,$(image-y))
 216 image-y := vmlinux.strip
 217 endif
 218
 219 $(obj)/zImage:          $(addprefix $(obj)/, $(image-y))
 220         @rm -f $@; ln $< $@
 221 $(obj)/zImage.initrd:   $(addprefix $(obj)/, $(initrd-y))
 222         @rm -f $@; ln $< $@
 223
 224 install: $(CONFIGURE) $(addprefix $(obj)/, $(image-y))
 225         sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $<
 226
 227 # anything not in $(targets)
 228 clean-files += $(image-) $(initrd-) zImage zImage.initrd cuImage.* treeImage.* \
 229         otheros.bld
 230
 231 # clean up files cached by wrapper
 232 clean-kernel := vmlinux.strip vmlinux.bin
 233 clean-kernel += $(addsuffix .gz,$(clean-kernel))
 234 # If not absolute clean-files are relative to $(obj).
 235 clean-files += $(addprefix $(objtree)/, $(clean-kernel))