arch/powerpc/boot/wrapper

   1 #!/bin/sh
   2
   3 # Copyright (C) 2006 Paul Mackerras, IBM Corporation <paulus@samba.org>
   4 # This program may be used under the terms of version 2 of the GNU
   5 # General Public License.
   6
   7 # This script takes a kernel binary and optionally an initrd image
   8 # and/or a device-tree blob, and creates a bootable zImage for a
   9 # given platform.
  10
  11 # Options:
  12 # -o zImage     specify output file
  13 # -p platform   specify platform (links in $platform.o)
  14 # -i initrd     specify initrd file
  15 # -d devtree    specify device-tree blob
  16 # -s tree.dts   specify device-tree source file (needs dtc installed)
  17 # -c            cache $kernel.strip.gz (use if present & newer, else make)
  18 # -C prefix     specify command prefix for cross-building tools
  19 #               (strip, objcopy, ld)
  20 # -D dir        specify directory containing data files used by script
  21 #               (default ./arch/powerpc/boot)
  22 # -W dir        specify working directory for temporary files (default .)
  23
  24 # Stop execution if any command fails
  25 set -e
  26
  27 # Allow for verbose output
  28 if [ "$V" = 1 ]; then
  29     set -x
  30 fi
  31
  32 # defaults
  33 kernel=
  34 ofile=zImage
  35 platform=of
  36 initrd=
  37 dtb=
  38 dts=
  39 cacheit=
  40 binary=
  41 gzip=.gz
  42 pie=
  43
  44 # cross-compilation prefix
  45 CROSS=
  46
  47 # mkimage wrapper script
  48 MKIMAGE=$srctree/scripts/mkuboot.sh
  49
  50 # directory for object and other files used by this script
  51 object=arch/powerpc/boot
  52 objbin=$object
  53 dtc=scripts/dtc/dtc
  54
  55 # directory for working files
  56 tmpdir=.
  57
  58 usage() {
  59     echo 'Usage: wrapper [-o output] [-p platform] [-i initrd]' >&2
  60     echo '       [-d devtree] [-s tree.dts] [-c] [-C cross-prefix]' >&2
  61     echo '       [-D datadir] [-W workingdir] [--no-gzip] [vmlinux]' >&2
  62     exit 1
  63 }
  64
  65 while [ "$#" -gt 0 ]; do
  66     case "$1" in
  67     -o)
  68         shift
  69         [ "$#" -gt 0 ] || usage
  70         ofile="$1"
  71         ;;
  72     -p)
  73         shift
  74         [ "$#" -gt 0 ] || usage
  75         platform="$1"
  76         ;;
  77     -i)
  78         shift
  79         [ "$#" -gt 0 ] || usage
  80         initrd="$1"
  81         ;;
  82     -d)
  83         shift
  84         [ "$#" -gt 0 ] || usage
  85         dtb="$1"
  86         ;;
  87     -s)
  88         shift
  89         [ "$#" -gt 0 ] || usage
  90         dts="$1"
  91         ;;
  92     -c)
  93         cacheit=y
  94         ;;
  95     -C)
  96         shift
  97         [ "$#" -gt 0 ] || usage
  98         CROSS="$1"
  99         ;;
 100     -D)
 101         shift
 102         [ "$#" -gt 0 ] || usage
 103         object="$1"
 104         objbin="$1"
 105         ;;
 106     -W)
 107         shift
 108         [ "$#" -gt 0 ] || usage
 109         tmpdir="$1"
 110         ;;
 111     --no-gzip)
 112         gzip=
 113         ;;
 114     -?)
 115         usage
 116         ;;
 117     *)
 118         [ -z "$kernel" ] || usage
 119         kernel="$1"
 120         ;;
 121     esac
 122     shift
 123 done
 124
 125 if [ -n "$dts" ]; then
 126     if [ ! -r "$dts" -a -r "$object/dts/$dts" ]; then
 127         dts="$object/dts/$dts"
 128     fi
 129     if [ -z "$dtb" ]; then
 130         dtb="$platform.dtb"
 131     fi
 132     $dtc -O dtb -o "$dtb" -b 0 "$dts"
 133 fi
 134
 135 if [ -z "$kernel" ]; then
 136     kernel=vmlinux
 137 fi
 138
 139 platformo=$object/"$platform".o
 140 lds=$object/zImage.lds
 141 ext=strip
 142 objflags=-S
 143 tmp=$tmpdir/zImage.$$.o
 144 ksection=.kernel:vmlinux.strip
 145 isection=.kernel:initrd
 146 link_address='0x400000'
 147
 148 case "$platform" in
 149 pseries)
 150     platformo=$object/of.o
 151     link_address='0x4000000'
 152     ;;
 153 maple)
 154     platformo=$object/of.o
 155     link_address='0x400000'
 156     ;;
 157 pmac|chrp)
 158     platformo=$object/of.o
 159     ;;
 160 coff)
 161     platformo="$object/crt0.o $object/of.o"
 162     lds=$object/zImage.coff.lds
 163     link_address='0x500000'
 164     pie=
 165     ;;
 166 miboot|uboot)
 167     # miboot and U-boot want just the bare bits, not an ELF binary
 168     ext=bin
 169     objflags="-O binary"
 170     tmp="$ofile"
 171     ksection=image
 172     isection=initrd
 173     ;;
 174 cuboot*)
 175     binary=y
 176     gzip=
 177     case "$platform" in
 178     *-mpc866ads|*-mpc885ads|*-adder875*|*-ep88xc)
 179         platformo=$object/cuboot-8xx.o
 180         ;;
 181     *5200*|*-motionpro)
 182         platformo=$object/cuboot-52xx.o
 183         ;;
 184     *-pq2fads|*-ep8248e|*-mpc8272*|*-storcenter)
 185         platformo=$object/cuboot-pq2.o
 186         ;;
 187     *-mpc824*)
 188         platformo=$object/cuboot-824x.o
 189         ;;
 190     *-mpc83*|*-asp834x*)
 191         platformo=$object/cuboot-83xx.o
 192         ;;
 193     *-tqm8541|*-mpc8560*|*-tqm8560|*-tqm8555|*-ksi8560*)
 194         platformo=$object/cuboot-85xx-cpm2.o
 195         ;;
 196     *-mpc85*|*-tqm85*|*-sbc85*)
 197         platformo=$object/cuboot-85xx.o
 198         ;;
 199     *-amigaone)
 200         link_address='0x800000'
 201         ;;
 202     esac
 203     ;;
 204 ps3)
 205     platformo="$object/ps3-head.o $object/ps3-hvcall.o $object/ps3.o"
 206     lds=$object/zImage.ps3.lds
 207     gzip=
 208     ext=bin
 209     objflags="-O binary --set-section-flags=.bss=contents,alloc,load,data"
 210     ksection=.kernel:vmlinux.bin
 211     isection=.kernel:initrd
 212     link_address=''
 213     pie=
 214     ;;
 215 ep88xc|ep405|ep8248e)
 216     platformo="$object/fixed-head.o $object/$platform.o"
 217     binary=y
 218     ;;
 219 adder875-redboot)
 220     platformo="$object/fixed-head.o $object/redboot-8xx.o"
 221     binary=y
 222     ;;
 223 simpleboot-virtex405-*)
 224     platformo="$object/virtex405-head.o $object/simpleboot.o $object/virtex.o"
 225     binary=y
 226     ;;
 227 simpleboot-virtex440-*)
 228     platformo="$object/fixed-head.o $object/simpleboot.o $object/virtex.o"
 229     binary=y
 230     ;;
 231 simpleboot-*)
 232     platformo="$object/fixed-head.o $object/simpleboot.o"
 233     binary=y
 234     ;;
 235 asp834x-redboot)
 236     platformo="$object/fixed-head.o $object/redboot-83xx.o"
 237     binary=y
 238     ;;
 239 xpedite52*)
 240     link_address='0x1400000'
 241     platformo=$object/cuboot-85xx.o
 242     ;;
 243 gamecube|wii)
 244     link_address='0x600000'
 245     platformo="$object/$platform-head.o $object/$platform.o"
 246     ;;
 247 treeboot-iss4xx-mpic)
 248     platformo="$object/treeboot-iss4xx.o"
 249     ;;
 250 epapr)
 251     link_address='0x20000000'
 252     pie=-pie
 253     ;;
 254 esac
 255
 256 vmz="$tmpdir/`basename \"$kernel\"`.$ext"
 257 if [ -z "$cacheit" -o ! -f "$vmz$gzip" -o "$vmz$gzip" -ot "$kernel" ]; then
 258     ${CROSS}objcopy $objflags "$kernel" "$vmz.$$"
 259
 260     if [ -n "$gzip" ]; then
 261         gzip -n -f -9 "$vmz.$$"
 262     fi
 263
 264     if [ -n "$cacheit" ]; then
 265         mv -f "$vmz.$$$gzip" "$vmz$gzip"
 266     else
 267         vmz="$vmz.$$"
 268     fi
 269 fi
 270
 271 vmz="$vmz$gzip"
 272
 273 # Extract kernel version information, some platforms want to include
 274 # it in the image header
 275 version=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \
 276     cut -d' ' -f3`
 277 if [ -n "$version" ]; then
 278     uboot_version="-n Linux-$version"
 279 fi
 280
 281 # physical offset of kernel image
 282 membase=`${CROSS}objdump -p "$kernel" | grep -m 1 LOAD | awk '{print $7}'`
 283
 284 case "$platform" in
 285 uboot)
 286     rm -f "$ofile"
 287     ${MKIMAGE} -A ppc -O linux -T kernel -C gzip -a $membase -e $membase \
 288         $uboot_version -d "$vmz" "$ofile"
 289     if [ -z "$cacheit" ]; then
 290         rm -f "$vmz"
 291     fi
 292     exit 0
 293     ;;
 294 esac
 295
 296 addsec() {
 297     ${CROSS}objcopy $4 $1 \
 298         --add-section=$3="$2" \
 299         --set-section-flags=$3=contents,alloc,load,readonly,data
 300 }
 301
 302 addsec $tmp "$vmz" $ksection $object/empty.o
 303 if [ -z "$cacheit" ]; then
 304     rm -f "$vmz"
 305 fi
 306
 307 if [ -n "$initrd" ]; then
 308     addsec $tmp "$initrd" $isection
 309 fi
 310
 311 if [ -n "$dtb" ]; then
 312     addsec $tmp "$dtb" .kernel:dtb
 313     if [ -n "$dts" ]; then
 314         rm $dtb
 315     fi
 316 fi
 317
 318 if [ "$platform" != "miboot" ]; then
 319     if [ -n "$link_address" ] ; then
 320         text_start="-Ttext $link_address"
 321     fi
 322     ${CROSS}ld -m elf32ppc -T $lds $text_start $pie -o "$ofile" \
 323         $platformo $tmp $object/wrapper.a
 324     rm $tmp
 325 fi
 326
 327 # Some platforms need the zImage's entry point and base address
 328 base=0x`${CROSS}nm "$ofile" | grep ' _start$' | cut -d' ' -f1`
 329 entry=`${CROSS}objdump -f "$ofile" | grep '^start address ' | cut -d' ' -f3`
 330
 331 if [ -n "$binary" ]; then
 332     mv "$ofile" "$ofile".elf
 333     ${CROSS}objcopy -O binary "$ofile".elf "$ofile"
 334 fi
 335
 336 # post-processing needed for some platforms
 337 case "$platform" in
 338 pseries|chrp|maple)
 339     $objbin/addnote "$ofile"
 340     ;;
 341 coff)
 342     ${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile"
 343     $objbin/hack-coff "$ofile"
 344     ;;
 345 cuboot*)
 346     gzip -n -f -9 "$ofile"
 347     ${MKIMAGE} -A ppc -O linux -T kernel -C gzip -a "$base" -e "$entry" \
 348             $uboot_version -d "$ofile".gz "$ofile"
 349     ;;
 350 treeboot*)
 351     mv "$ofile" "$ofile.elf"
 352     $objbin/mktree "$ofile.elf" "$ofile" "$base" "$entry"
 353     if [ -z "$cacheit" ]; then
 354         rm -f "$ofile.elf"
 355     fi
 356     exit 0
 357     ;;
 358 ps3)
 359     # The ps3's loader supports loading a gzipped binary image from flash
 360     # rom to ram addr zero. The loader then enters the system reset
 361     # vector at addr 0x100.  A bootwrapper overlay is used to arrange for
 362     # a binary image of the kernel to be at addr zero, and yet have a
 363     # suitable bootwrapper entry at 0x100.  To construct the final rom
 364     # image 512 bytes from offset 0x100 is copied to the bootwrapper
 365     # place holder at symbol __system_reset_kernel.  The 512 bytes of the
 366     # bootwrapper entry code at symbol __system_reset_overlay is then
 367     # copied to offset 0x100.  At runtime the bootwrapper program copies
 368     # the data at __system_reset_kernel back to addr 0x100.
 369
 370     system_reset_overlay=0x`${CROSS}nm "$ofile" \
 371         | grep ' __system_reset_overlay$'       \
 372         | cut -d' ' -f1`
 373     system_reset_overlay=`printf "%d" $system_reset_overlay`
 374     system_reset_kernel=0x`${CROSS}nm "$ofile" \
 375         | grep ' __system_reset_kernel$'       \
 376         | cut -d' ' -f1`
 377     system_reset_kernel=`printf "%d" $system_reset_kernel`
 378     overlay_dest="256"
 379     overlay_size="512"
 380
 381     ${CROSS}objcopy -O binary "$ofile" "$ofile.bin"
 382
 383     dd if="$ofile.bin" of="$ofile.bin" conv=notrunc   \
 384         skip=$overlay_dest seek=$system_reset_kernel  \
 385         count=$overlay_size bs=1
 386
 387     dd if="$ofile.bin" of="$ofile.bin" conv=notrunc   \
 388         skip=$system_reset_overlay seek=$overlay_dest \
 389         count=$overlay_size bs=1
 390
 391     odir="$(dirname "$ofile.bin")"
 392     rm -f "$odir/otheros.bld"
 393     gzip -n --force -9 --stdout "$ofile.bin" > "$odir/otheros.bld"
 394     ;;
 395 esac