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