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   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__ $(BOOTCFLAGS) -traditional -nostdinc
  27
  28 ifdef CONFIG_DEBUG_INFO
  29 BOOTCFLAGS      += -g
  30 endif
  31
  32 ifeq ($(call cc-option-yn, -fstack-protector),y)
  33 BOOTCFLAGS      += -fno-stack-protector
  34 endif
  35
  36 BOOTCFLAGS      += -I$(obj) -I$(srctree)/$(obj) -I$(srctree)/$(src)/libfdt
  37
  38 $(obj)/4xx.o: BOOTCFLAGS += -mcpu=440
  39 $(obj)/ebony.o: BOOTCFLAGS += -mcpu=440
  40 $(obj)/cuboot-taishan.o: BOOTCFLAGS += -mcpu=440
  41 $(obj)/cuboot-katmai.o: BOOTCFLAGS += -mcpu=440
  42 $(obj)/treeboot-walnut.o: BOOTCFLAGS += -mcpu=405
  43
  44
  45 zlib       := inffast.c inflate.c inftrees.c
  46 zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h
  47 zliblinuxheader := zlib.h zconf.h zutil.h
  48
  49 $(addprefix $(obj)/,$(zlib) gunzip_util.o main.o): \
  50         $(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader))
  51
  52 src-libfdt := fdt.c fdt_ro.c fdt_wip.c fdt_sw.c fdt_rw.c fdt_strerror.c
  53 src-wlib := string.S crt0.S stdio.c main.c \
  54                 $(addprefix libfdt/,$(src-libfdt)) libfdt-wrapper.c \
  55                 ns16550.c serial.c simple_alloc.c div64.S util.S \
  56                 gunzip_util.c elf_util.c $(zlib) devtree.c oflib.c ofconsole.c \
  57                 4xx.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c cuboot.c bamboo.c \
  58                 cpm-serial.c stdlib.c mpc52xx-psc.c planetcore.c uartlite.c \
  59                 fsl-soc.c mpc8xx.c pq2.c
  60 src-plat := of.c cuboot-52xx.c cuboot-824x.c cuboot-83xx.c cuboot-85xx.c holly.c \
  61                 cuboot-ebony.c treeboot-ebony.c prpmc2800.c \
  62                 ps3-head.S ps3-hvcall.S ps3.c treeboot-bamboo.c cuboot-8xx.c \
  63                 cuboot-pq2.c cuboot-sequoia.c treeboot-walnut.c cuboot-bamboo.c \
  64                 fixed-head.S ep88xc.c cuboot-hpc2.c ep405.c cuboot-taishan.c \
  65                 cuboot-katmai.c cuboot-rainier.c redboot-8xx.c ep8248e.c \
  66                 cuboot-warp.c cuboot-85xx-cpm2.c
  67 src-boot := $(src-wlib) $(src-plat) empty.c
  68
  69 src-boot := $(addprefix $(obj)/, $(src-boot))
  70 obj-boot := $(addsuffix .o, $(basename $(src-boot)))
  71 obj-wlib := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-wlib))))
  72 obj-plat := $(addsuffix .o, $(basename $(addprefix $(obj)/, $(src-plat))))
  73
  74 quiet_cmd_copy_zlib = COPY    $@
  75       cmd_copy_zlib = sed "s@__used@@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
  76
  77 quiet_cmd_copy_zlibheader = COPY    $@
  78       cmd_copy_zlibheader = sed "s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
  79 # stddef.h for NULL
  80 quiet_cmd_copy_zliblinuxheader = COPY    $@
  81       cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]*\).*@\"\1\"@" $< > $@
  82
  83 $(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
  84         $(call cmd,copy_zlib)
  85
  86 $(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
  87         $(call cmd,copy_zlibheader)
  88
  89 $(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/%
  90         $(call cmd,copy_zliblinuxheader)
  91
  92 $(obj)/empty.c:
  93         @touch $@
  94
  95 $(obj)/zImage.lds $(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds: $(obj)/%: $(srctree)/$(src)/%.S
  96         @cp $< $@
  97
  98 clean-files := $(zlib) $(zlibheader) $(zliblinuxheader) \
  99                 empty.c zImage zImage.coff.lds zImage.ps3.lds zImage.lds
 100
 101 quiet_cmd_bootcc = BOOTCC  $@
 102       cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $<
 103
 104 quiet_cmd_bootas = BOOTAS  $@
 105       cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $<
 106
 107 quiet_cmd_bootar = BOOTAR  $@
 108       cmd_bootar = $(CROSS32AR) -cr $@.$$$$ $(filter-out FORCE,$^); mv $@.$$$$ $@
 109
 110 $(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c FORCE
 111         $(Q)mkdir -p $(dir $@)
 112         $(call if_changed_dep,bootcc)
 113 $(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S FORCE
 114         $(Q)mkdir -p $(dir $@)
 115         $(call if_changed_dep,bootas)
 116
 117 $(obj)/wrapper.a: $(obj-wlib) FORCE
 118         $(call if_changed,bootar)
 119
 120 hostprogs-y     := addnote addRamDisk hack-coff mktree dtc
 121
 122 targets         += $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a)
 123 extra-y         := $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \
 124                    $(obj)/zImage.lds $(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds
 125
 126 wrapper         :=$(srctree)/$(src)/wrapper
 127 wrapperbits     := $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree dtc) \
 128                         $(wrapper) FORCE
 129
 130 #############
 131 # Bits for building dtc
 132 # DTC_GENPARSER      := 1    # Uncomment to rebuild flex/bison output
 133
 134 dtc-objs := dtc.o flattree.o fstree.o data.o livetree.o treesource.o srcpos.o checks.o
 135 dtc-objs += dtc-lexer.lex.o dtc-parser.tab.o
 136 dtc-objs := $(addprefix dtc-src/, $(dtc-objs))
 137
 138 # prerequisites on generated files needs to be explicit
 139 $(obj)/dtc-src/dtc-parser.tab.o: $(obj)/dtc-src/dtc-parser.tab.c $(obj)/dtc-src/dtc-parser.tab.h
 140 $(obj)/dtc-src/dtc-lexer.lex.o:  $(obj)/dtc-src/dtc-lexer.lex.c $(obj)/dtc-src/dtc-parser.tab.h
 141
 142 HOSTCFLAGS += -I$(src)/dtc-src/ -I$(src)/libfdt/
 143
 144 targets += dtc-src/dtc-parser.tab.c
 145 targets += dtc-src/dtc-lexer.lex.c
 146
 147 ifdef DTC_GENPARSER
 148 BISON = bison
 149 FLEX = flex
 150
 151 quiet_cmd_bison = BISON   $@
 152       cmd_bison = $(BISON) -o$@ -d $<; cp $@ $@_shipped
 153 quiet_cmd_flex = FLEX    $@
 154       cmd_flex = $(FLEX) -o$@ $<; cp $@ $@_shipped
 155
 156 $(obj)/dtc-src/dtc-parser.tab.c: $(src)/dtc-src/dtc-parser.y FORCE
 157      $(call if_changed,bison)
 158
 159 $(obj)/dtc-src/dtc-parser.tab.h: $(obj)/dtc-src/dtc-parser.tab.c
 160
 161 $(obj)/dtc-src/dtc-lexer.lex.c: $(src)/dtc-src/dtc-lexer.l FORCE
 162      $(call if_changed,flex)
 163 endif
 164
 165 #############
 166 # Bits for building various flavours of zImage
 167
 168 ifneq ($(CROSS32_COMPILE),)
 169 CROSSWRAP := -C "$(CROSS32_COMPILE)"
 170 else
 171 ifneq ($(CROSS_COMPILE),)
 172 CROSSWRAP := -C "$(CROSS_COMPILE)"
 173 endif
 174 endif
 175
 176 # args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd
 177 quiet_cmd_wrap  = WRAP    $@
 178       cmd_wrap  =$(CONFIG_SHELL) $(wrapper) -c -o $@ -p $2 $(CROSSWRAP) \
 179                 $(if $3, -s $3)$(if $4, -d $4)$(if $5, -i $5) vmlinux
 180
 181 image-$(CONFIG_PPC_PSERIES)             += zImage.pseries
 182 image-$(CONFIG_PPC_MAPLE)               += zImage.pseries
 183 image-$(CONFIG_PPC_IBM_CELL_BLADE)      += zImage.pseries
 184 image-$(CONFIG_PPC_PS3)                 += zImage.ps3
 185 image-$(CONFIG_PPC_CELLEB)              += zImage.pseries
 186 image-$(CONFIG_PPC_CHRP)                += zImage.chrp
 187 image-$(CONFIG_PPC_EFIKA)               += zImage.chrp
 188 image-$(CONFIG_PPC_PMAC)                += zImage.pmac
 189 image-$(CONFIG_PPC_HOLLY)               += zImage.holly
 190 image-$(CONFIG_PPC_PRPMC2800)           += zImage.prpmc2800
 191 image-$(CONFIG_PPC_ISERIES)             += zImage.iseries
 192 image-$(CONFIG_DEFAULT_UIMAGE)          += uImage
 193
 194 ifneq ($(CONFIG_DEVICE_TREE),"")
 195 image-$(CONFIG_PPC_8xx)                 += cuImage.8xx
 196 image-$(CONFIG_PPC_EP88XC)              += zImage.ep88xc
 197 image-$(CONFIG_EP405)                   += zImage.ep405
 198 image-$(CONFIG_8260)                    += cuImage.pq2
 199 image-$(CONFIG_EP8248E)                 += zImage.ep8248e
 200 image-$(CONFIG_PPC_MPC52xx)             += cuImage.52xx
 201 image-$(CONFIG_STORCENTER)              += cuImage.824x
 202 image-$(CONFIG_PPC_83xx)                += cuImage.83xx
 203 image-$(CONFIG_PPC_85xx)                += cuImage.85xx
 204 ifeq ($(CONFIG_CPM2),y)
 205 image-$(CONFIG_PPC_85xx)                += cuImage.85xx-cpm2
 206 endif
 207 image-$(CONFIG_MPC7448HPC2)             += cuImage.hpc2
 208 image-$(CONFIG_EBONY)                   += treeImage.ebony cuImage.ebony
 209 image-$(CONFIG_BAMBOO)                  += treeImage.bamboo cuImage.bamboo
 210 image-$(CONFIG_SEQUOIA)                 += cuImage.sequoia
 211 image-$(CONFIG_RAINIER)                 += cuImage.rainier
 212 image-$(CONFIG_WALNUT)                  += treeImage.walnut
 213 image-$(CONFIG_TAISHAN)                 += cuImage.taishan
 214 image-$(CONFIG_KATMAI)                  += cuImage.katmai
 215 image-$(CONFIG_WARP)                    += cuImage.warp
 216 endif
 217
 218 ifneq ($(CONFIG_REDBOOT),"")
 219 image-$(CONFIG_PPC_8xx)                 += zImage.redboot-8xx
 220 endif
 221
 222 # For 32-bit powermacs, build the COFF and miboot images
 223 # as well as the ELF images.
 224 ifeq ($(CONFIG_PPC32),y)
 225 image-$(CONFIG_PPC_PMAC)        += zImage.coff zImage.miboot
 226 endif
 227
 228 initrd-  := $(patsubst zImage%, zImage.initrd%, $(image-n) $(image-))
 229 initrd-y := $(patsubst zImage%, zImage.initrd%, \
 230                 $(patsubst treeImage%, treeImage.initrd%, $(image-y)))
 231 initrd-y := $(filter-out $(image-y), $(initrd-y))
 232 targets += $(image-y) $(initrd-y)
 233
 234 $(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz
 235
 236 # If CONFIG_WANT_DEVICE_TREE is set and CONFIG_DEVICE_TREE isn't an
 237 # empty string, define 'dts' to be path to the dts
 238 # CONFIG_DEVICE_TREE will have "" around it, make sure to strip them
 239 ifeq ($(CONFIG_WANT_DEVICE_TREE),y)
 240 ifneq ($(CONFIG_DEVICE_TREE),"")
 241 dts = $(if $(shell echo $(CONFIG_DEVICE_TREE) | grep '^/'),\
 242         ,$(srctree)/$(src)/dts/)$(CONFIG_DEVICE_TREE:"%"=%)
 243 endif
 244 endif
 245
 246 # Don't put the ramdisk on the pattern rule; when its missing make will try
 247 # the pattern rule with less dependencies that also matches (even with the
 248 # hard dependency listed).
 249 $(obj)/zImage.initrd.%: vmlinux $(wrapperbits) $(dts)
 250         $(call if_changed,wrap,$*,$(dts),,$(obj)/ramdisk.image.gz)
 251
 252 $(obj)/zImage.%: vmlinux $(wrapperbits) $(dts)
 253         $(call if_changed,wrap,$*,$(dts))
 254
 255 # This cannot be in the root of $(src) as the zImage rule always adds a $(obj)
 256 # prefix
 257 $(obj)/vmlinux.strip: vmlinux
 258         $(STRIP) -s -R .comment $< -o $@
 259
 260 $(obj)/zImage.iseries: vmlinux
 261         $(STRIP) -s -R .comment $< -o $@
 262
 263 $(obj)/zImage.ps3: vmlinux  $(wrapper) $(wrapperbits) $(srctree)/$(src)/dts/ps3.dts
 264         $(STRIP) -s -R .comment $< -o vmlinux.strip
 265         $(call cmd,wrap,ps3,$(srctree)/$(src)/dts/ps3.dts,,)
 266
 267 $(obj)/zImage.initrd.ps3: vmlinux  $(wrapper) $(wrapperbits) $(srctree)/$(src)/dts/ps3.dts $(obj)/ramdisk.image.gz
 268         $(call cmd,wrap,ps3,$(srctree)/$(src)/dts/ps3.dts,,$(obj)/ramdisk.image.gz)
 269
 270 $(obj)/uImage: vmlinux $(wrapperbits)
 271         $(call if_changed,wrap,uboot)
 272
 273 $(obj)/cuImage.%: vmlinux $(dts) $(wrapperbits)
 274         $(call if_changed,wrap,cuboot-$*,$(dts))
 275
 276 $(obj)/treeImage.initrd.%: vmlinux $(dts) $(wrapperbits)
 277         $(call if_changed,wrap,treeboot-$*,$(dts),,$(obj)/ramdisk.image.gz)
 278
 279 $(obj)/treeImage.%: vmlinux $(dts) $(wrapperbits)
 280         $(call if_changed,wrap,treeboot-$*,$(dts))
 281
 282 # If there isn't a platform selected then just strip the vmlinux.
 283 ifeq (,$(image-y))
 284 image-y := vmlinux.strip
 285 endif
 286
 287 $(obj)/zImage:          $(addprefix $(obj)/, $(image-y))
 288         @rm -f $@; ln $< $@
 289 $(obj)/zImage.initrd:   $(addprefix $(obj)/, $(initrd-y))
 290         @rm -f $@; ln $< $@
 291
 292 install: $(CONFIGURE) $(addprefix $(obj)/, $(image-y))
 293         sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $<
 294
 295 # anything not in $(targets)
 296 clean-files += $(image-) $(initrd-) zImage zImage.initrd cuImage.* treeImage.* \
 297         otheros.bld
 298
 299 # clean up files cached by wrapper
 300 clean-kernel := vmlinux.strip vmlinux.bin
 301 clean-kernel += $(addsuffix .gz,$(clean-kernel))
 302 # If not absolute clean-files are relative to $(obj).
 303 clean-files += $(addprefix $(objtree)/, $(clean-kernel))
 304
 305 WRAPPER_OBJDIR := /usr/lib/kernel-wrapper
 306 WRAPPER_DTSDIR := /usr/lib/kernel-wrapper/dts
 307 WRAPPER_BINDIR := /usr/sbin
 308 INSTALL := install
 309
 310 extra-installed         := $(patsubst $(obj)/%, $(DESTDIR)$(WRAPPER_OBJDIR)/%, $(extra-y))
 311 hostprogs-installed     := $(patsubst %, $(DESTDIR)$(WRAPPER_BINDIR)/%, $(hostprogs-y))
 312 wrapper-installed       := $(DESTDIR)$(WRAPPER_BINDIR)/wrapper
 313 dts-installed           := $(patsubst $(obj)/dts/%, $(DESTDIR)$(WRAPPER_DTSDIR)/%, $(wildcard $(obj)/dts/*.dts))
 314
 315 all-installed           := $(extra-installed) $(hostprogs-installed) $(wrapper-installed) $(dts-installed)
 316
 317 quiet_cmd_mkdir           = MKDIR   $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
 318       cmd_mkdir           = mkdir -p $@
 319
 320 quiet_cmd_install         = INSTALL $(patsubst $(DESTDIR)$(WRAPPER_OBJDIR)/%,%,$@)
 321       cmd_install         = $(INSTALL)  -m0644 $(patsubst $(DESTDIR)$(WRAPPER_OBJDIR)/%,$(obj)/%,$@) $@
 322
 323 quiet_cmd_install_dts     = INSTALL $(patsubst $(DESTDIR)$(WRAPPER_DTSDIR)/%,dts/%,$@)
 324       cmd_install_dts     = $(INSTALL)  -m0644 $(patsubst $(DESTDIR)$(WRAPPER_DTSDIR)/%,$(srctree)/$(obj)/dts/%,$@) $@
 325
 326 quiet_cmd_install_exe     = INSTALL $(patsubst $(DESTDIR)$(WRAPPER_BINDIR)/%,%,$@)
 327       cmd_install_exe     = $(INSTALL)  -m0755 $(patsubst $(DESTDIR)$(WRAPPER_BINDIR)/%,$(obj)/%,$@) $@
 328
 329 quiet_cmd_install_wrapper = INSTALL $(patsubst $(DESTDIR)$(WRAPPER_BINDIR)/%,%,$@)
 330       cmd_install_wrapper = $(INSTALL)  -m0755 $(patsubst $(DESTDIR)$(WRAPPER_BINDIR)/%,$(srctree)/$(obj)/%,$@) $@ ;\
 331                                 sed -i $@ -e 's%^object=.*%object=$(WRAPPER_OBJDIR)%' \
 332                                           -e 's%^objbin=.*%objbin=$(WRAPPER_BINDIR)%' \
 333
 334
 335 $(DESTDIR)$(WRAPPER_OBJDIR) $(DESTDIR)$(WRAPPER_DTSDIR) $(DESTDIR)$(WRAPPER_BINDIR):
 336         $(call cmd,mkdir)
 337
 338 $(extra-installed)      : $(DESTDIR)$(WRAPPER_OBJDIR)/% : $(obj)/% | $(DESTDIR)$(WRAPPER_OBJDIR)
 339         $(call cmd,install)
 340
 341 $(hostprogs-installed)  : $(DESTDIR)$(WRAPPER_BINDIR)/% : $(obj)/% | $(DESTDIR)$(WRAPPER_BINDIR)
 342         $(call cmd,install_exe)
 343
 344 $(dts-installed)        : $(DESTDIR)$(WRAPPER_DTSDIR)/% : $(srctree)/$(obj)/dts/% | $(DESTDIR)$(WRAPPER_DTSDIR)
 345         $(call cmd,install_dts)
 346
 347 $(wrapper-installed): $(DESTDIR)$(WRAPPER_BINDIR) $(srctree)/$(obj)/wrapper | $(DESTDIR)$(WRAPPER_BINDIR)
 348         $(call cmd,install_wrapper)
 349
 350 $(obj)/bootwrapper_install: $(all-installed)
 351