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 42pie= 43 44# cross-compilation prefix 45CROSS= 46 47# mkimage wrapper script 48MKIMAGE=$srctree/scripts/mkuboot.sh 49 50# directory for object and other files used by this script 51object=arch/powerpc/boot 52objbin=$object 53dtc=scripts/dtc/dtc 54 55# directory for working files 56tmpdir=. 57 58usage() { 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 65while [ "$#" -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="$1" 120 ;; 121 esac 122 shift 123done 124 125if [ -n "$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 "$dts" 133fi 134 135if [ -z "$kernel" ]; then 136 kernel=vmlinux 137fi 138 139platformo=$object/"$platform".o 140lds=$object/zImage.lds 141ext=strip 142objflags=-S 143tmp=$tmpdir/zImage.$$.o 144ksection=.kernel:vmlinux.strip 145isection=.kernel:initrd 146link_address='0x400000' 147make_space=y 148 149case "$platform" in 150pseries) 151 platformo="$object/of.o $object/epapr.o" 152 link_address='0x4000000' 153 ;; 154maple) 155 platformo="$object/of.o $object/epapr.o" 156 link_address='0x400000' 157 ;; 158pmac|chrp) 159 platformo="$object/of.o $object/epapr.o" 160 ;; 161coff) 162 platformo="$object/crt0.o $object/of.o $object/epapr.o" 163 lds=$object/zImage.coff.lds 164 link_address='0x500000' 165 pie= 166 ;; 167miboot|uboot*) 168 # miboot and U-boot want just the bare bits, not an ELF binary 169 ext=bin 170 objflags="-O binary" 171 tmp="$ofile" 172 ksection=image 173 isection=initrd 174 ;; 175cuboot*) 176 binary=y 177 gzip= 178 case "$platform" in 179 *-mpc866ads|*-mpc885ads|*-adder875*|*-ep88xc) 180 platformo=$object/cuboot-8xx.o 181 ;; 182 *5200*|*-motionpro) 183 platformo=$object/cuboot-52xx.o 184 ;; 185 *-pq2fads|*-ep8248e|*-mpc8272*|*-storcenter) 186 platformo=$object/cuboot-pq2.o 187 ;; 188 *-mpc824*) 189 platformo=$object/cuboot-824x.o 190 ;; 191 *-mpc83*|*-asp834x*) 192 platformo=$object/cuboot-83xx.o 193 ;; 194 *-tqm8541|*-mpc8560*|*-tqm8560|*-tqm8555|*-ksi8560*) 195 platformo=$object/cuboot-85xx-cpm2.o 196 ;; 197 *-mpc85*|*-tqm85*|*-sbc85*) 198 platformo=$object/cuboot-85xx.o 199 ;; 200 *-amigaone) 201 link_address='0x800000' 202 ;; 203 esac 204 ;; 205ps3) 206 platformo="$object/ps3-head.o $object/ps3-hvcall.o $object/ps3.o" 207 lds=$object/zImage.ps3.lds 208 gzip= 209 ext=bin 210 objflags="-O binary --set-section-flags=.bss=contents,alloc,load,data" 211 ksection=.kernel:vmlinux.bin 212 isection=.kernel:initrd 213 link_address='' 214 make_space=n 215 pie= 216 ;; 217ep88xc|ep405|ep8248e) 218 platformo="$object/fixed-head.o $object/$platform.o" 219 binary=y 220 ;; 221adder875-redboot) 222 platformo="$object/fixed-head.o $object/redboot-8xx.o" 223 binary=y 224 ;; 225simpleboot-virtex405-*) 226 platformo="$object/virtex405-head.o $object/simpleboot.o $object/virtex.o" 227 binary=y 228 ;; 229simpleboot-virtex440-*) 230 platformo="$object/fixed-head.o $object/simpleboot.o $object/virtex.o" 231 binary=y 232 ;; 233simpleboot-*) 234 platformo="$object/fixed-head.o $object/simpleboot.o" 235 binary=y 236 ;; 237asp834x-redboot) 238 platformo="$object/fixed-head.o $object/redboot-83xx.o" 239 binary=y 240 ;; 241xpedite52*) 242 link_address='0x1400000' 243 platformo=$object/cuboot-85xx.o 244 ;; 245gamecube|wii) 246 link_address='0x600000' 247 platformo="$object/$platform-head.o $object/$platform.o" 248 ;; 249treeboot-currituck) 250 link_address='0x1000000' 251 ;; 252treeboot-iss4xx-mpic) 253 platformo="$object/treeboot-iss4xx.o" 254 ;; 255epapr) 256 platformo="$object/epapr.o $object/epapr-wrapper.o" 257 link_address='0x20000000' 258 pie=-pie 259 ;; 260esac 261 262vmz="$tmpdir/`basename \"$kernel\"`.$ext" 263if [ -z "$cacheit" -o ! -f "$vmz$gzip" -o "$vmz$gzip" -ot "$kernel" ]; then 264 ${CROSS}objcopy $objflags "$kernel" "$vmz.$$" 265 266 strip_size=$(stat -c %s $vmz.$$) 267 268 if [ -n "$gzip" ]; then 269 gzip -n -f -9 "$vmz.$$" 270 fi 271 272 if [ -n "$cacheit" ]; then 273 mv -f "$vmz.$$$gzip" "$vmz$gzip" 274 else 275 vmz="$vmz.$$" 276 fi 277else 278 # Calculate the vmlinux.strip size 279 ${CROSS}objcopy $objflags "$kernel" "$vmz.$$" 280 strip_size=$(stat -c %s $vmz.$$) 281 rm -f $vmz.$$ 282fi 283 284if [ "$make_space" = "y" ]; then 285 # Round the size to next higher MB limit 286 round_size=$(((strip_size + 0xfffff) & 0xfff00000)) 287 288 round_size=0x$(printf "%x" $round_size) 289 link_addr=$(printf "%d" $link_address) 290 291 if [ $link_addr -lt $strip_size ]; then 292 echo "INFO: Uncompressed kernel (size 0x$(printf "%x\n" $strip_size))" \ 293 "overlaps the address of the wrapper($link_address)" 294 echo "INFO: Fixing the link_address of wrapper to ($round_size)" 295 link_address=$round_size 296 fi 297fi 298 299vmz="$vmz$gzip" 300 301# Extract kernel version information, some platforms want to include 302# it in the image header 303version=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \ 304 cut -d' ' -f3` 305if [ -n "$version" ]; then 306 uboot_version="-n Linux-$version" 307fi 308 309# physical offset of kernel image 310membase=`${CROSS}objdump -p "$kernel" | grep -m 1 LOAD | awk '{print $7}'` 311 312case "$platform" in 313uboot) 314 rm -f "$ofile" 315 ${MKIMAGE} -A ppc -O linux -T kernel -C gzip -a $membase -e $membase \ 316 $uboot_version -d "$vmz" "$ofile" 317 if [ -z "$cacheit" ]; then 318 rm -f "$vmz" 319 fi 320 exit 0 321 ;; 322uboot-obs600) 323 rm -f "$ofile" 324 # obs600 wants a multi image with an initrd, so we need to put a fake 325 # one in even when building a "normal" image. 326 if [ -n "$initrd" ]; then 327 real_rd="$initrd" 328 else 329 real_rd=`mktemp` 330 echo "\0" >>"$real_rd" 331 fi 332 ${MKIMAGE} -A ppc -O linux -T multi -C gzip -a $membase -e $membase \ 333 $uboot_version -d "$vmz":"$real_rd":"$dtb" "$ofile" 334 if [ -z "$initrd" ]; then 335 rm -f "$real_rd" 336 fi 337 if [ -z "$cacheit" ]; then 338 rm -f "$vmz" 339 fi 340 exit 0 341 ;; 342esac 343 344addsec() { 345 ${CROSS}objcopy $4 $1 \ 346 --add-section=$3="$2" \ 347 --set-section-flags=$3=contents,alloc,load,readonly,data 348} 349 350addsec $tmp "$vmz" $ksection $object/empty.o 351if [ -z "$cacheit" ]; then 352 rm -f "$vmz" 353fi 354 355if [ -n "$initrd" ]; then 356 addsec $tmp "$initrd" $isection 357fi 358 359if [ -n "$dtb" ]; then 360 addsec $tmp "$dtb" .kernel:dtb 361 if [ -n "$dts" ]; then 362 rm $dtb 363 fi 364fi 365 366if [ "$platform" != "miboot" ]; then 367 if [ -n "$link_address" ] ; then 368 text_start="-Ttext $link_address" 369 fi 370 ${CROSS}ld -m elf32ppc -T $lds $text_start $pie -o "$ofile" \ 371 $platformo $tmp $object/wrapper.a 372 rm $tmp 373fi 374 375# Some platforms need the zImage's entry point and base address 376base=0x`${CROSS}nm "$ofile" | grep ' _start$' | cut -d' ' -f1` 377entry=`${CROSS}objdump -f "$ofile" | grep '^start address ' | cut -d' ' -f3` 378 379if [ -n "$binary" ]; then 380 mv "$ofile" "$ofile".elf 381 ${CROSS}objcopy -O binary "$ofile".elf "$ofile" 382fi 383 384# post-processing needed for some platforms 385case "$platform" in 386pseries|chrp|maple) 387 $objbin/addnote "$ofile" 388 ;; 389coff) 390 ${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile" 391 $objbin/hack-coff "$ofile" 392 ;; 393cuboot*) 394 gzip -n -f -9 "$ofile" 395 ${MKIMAGE} -A ppc -O linux -T kernel -C gzip -a "$base" -e "$entry" \ 396 $uboot_version -d "$ofile".gz "$ofile" 397 ;; 398treeboot*) 399 mv "$ofile" "$ofile.elf" 400 $objbin/mktree "$ofile.elf" "$ofile" "$base" "$entry" 401 if [ -z "$cacheit" ]; then 402 rm -f "$ofile.elf" 403 fi 404 exit 0 405 ;; 406ps3) 407 # The ps3's loader supports loading a gzipped binary image from flash 408 # rom to ram addr zero. The loader then enters the system reset 409 # vector at addr 0x100. A bootwrapper overlay is used to arrange for 410 # a binary image of the kernel to be at addr zero, and yet have a 411 # suitable bootwrapper entry at 0x100. To construct the final rom 412 # image 512 bytes from offset 0x100 is copied to the bootwrapper 413 # place holder at symbol __system_reset_kernel. The 512 bytes of the 414 # bootwrapper entry code at symbol __system_reset_overlay is then 415 # copied to offset 0x100. At runtime the bootwrapper program copies 416 # the data at __system_reset_kernel back to addr 0x100. 417 418 system_reset_overlay=0x`${CROSS}nm "$ofile" \ 419 | grep ' __system_reset_overlay$' \ 420 | cut -d' ' -f1` 421 system_reset_overlay=`printf "%d" $system_reset_overlay` 422 system_reset_kernel=0x`${CROSS}nm "$ofile" \ 423 | grep ' __system_reset_kernel$' \ 424 | cut -d' ' -f1` 425 system_reset_kernel=`printf "%d" $system_reset_kernel` 426 overlay_dest="256" 427 overlay_size="512" 428 429 ${CROSS}objcopy -O binary "$ofile" "$ofile.bin" 430 431 dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \ 432 skip=$overlay_dest seek=$system_reset_kernel \ 433 count=$overlay_size bs=1 434 435 dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \ 436 skip=$system_reset_overlay seek=$overlay_dest \ 437 count=$overlay_size bs=1 438 439 odir="$(dirname "$ofile.bin")" 440 rm -f "$odir/otheros.bld" 441 gzip -n --force -9 --stdout "$ofile.bin" > "$odir/otheros.bld" 442 ;; 443esac 444