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