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# directory for object and other files used by this script 47object=arch/powerpc/boot 48objbin=$object 49 50# directory for working files 51tmpdir=. 52 53usage() { 54 echo 'Usage: wrapper [-o output] [-p platform] [-i initrd]' >&2 55 echo ' [-d devtree] [-s tree.dts] [-c] [-C cross-prefix]' >&2 56 echo ' [-D datadir] [-W workingdir] [--no-gzip] [vmlinux]' >&2 57 exit 1 58} 59 60while [ "$#" -gt 0 ]; do 61 case "$1" in 62 -o) 63 shift 64 [ "$#" -gt 0 ] || usage 65 ofile="$1" 66 ;; 67 -p) 68 shift 69 [ "$#" -gt 0 ] || usage 70 platform="$1" 71 ;; 72 -i) 73 shift 74 [ "$#" -gt 0 ] || usage 75 initrd="$1" 76 ;; 77 -d) 78 shift 79 [ "$#" -gt 0 ] || usage 80 dtb="$1" 81 ;; 82 -s) 83 shift 84 [ "$#" -gt 0 ] || usage 85 dts="$1" 86 ;; 87 -c) 88 cacheit=y 89 ;; 90 -C) 91 shift 92 [ "$#" -gt 0 ] || usage 93 CROSS="$1" 94 ;; 95 -D) 96 shift 97 [ "$#" -gt 0 ] || usage 98 object="$1" 99 objbin="$1" 100 ;; 101 -W) 102 shift 103 [ "$#" -gt 0 ] || usage 104 tmpdir="$1" 105 ;; 106 --no-gzip) 107 gzip= 108 ;; 109 -?) 110 usage 111 ;; 112 *) 113 [ -z "$kernel" ] || usage 114 kernel="$1" 115 ;; 116 esac 117 shift 118done 119 120if [ -n "$dts" ]; then 121 if [ ! -r "$dts" -a -r "$object/dts/$dts" ]; then 122 dts="$object/dts/$dts" 123 fi 124 if [ -z "$dtb" ]; then 125 dtb="$platform.dtb" 126 fi 127 $object/dtc -O dtb -o "$dtb" -b 0 "$dts" 128fi 129 130if [ -z "$kernel" ]; then 131 kernel=vmlinux 132fi 133 134platformo=$object/"$platform".o 135lds=$object/zImage.lds 136ext=strip 137objflags=-S 138tmp=$tmpdir/zImage.$$.o 139ksection=.kernel:vmlinux.strip 140isection=.kernel:initrd 141 142case "$platform" in 143pmac|pseries|chrp) 144 platformo=$object/of.o 145 ;; 146coff) 147 platformo=$object/of.o 148 lds=$object/zImage.coff.lds 149 ;; 150miboot|uboot) 151 # miboot and U-boot want just the bare bits, not an ELF binary 152 ext=bin 153 objflags="-O binary" 154 tmp="$ofile" 155 ksection=image 156 isection=initrd 157 ;; 158cuboot*) 159 binary=y 160 gzip= 161 case "$platform" in 162 *-mpc885ads|*-adder875*|*-ep88xc) 163 platformo=$object/cuboot-8xx.o 164 ;; 165 *5200*|*-motionpro) 166 platformo=$object/cuboot-52xx.o 167 ;; 168 *-pq2fads|*-ep8248e|*-mpc8272*|*-storcenter) 169 platformo=$object/cuboot-pq2.o 170 ;; 171 *-mpc824*) 172 platformo=$object/cuboot-824x.o 173 ;; 174 *-mpc83*) 175 platformo=$object/cuboot-83xx.o 176 ;; 177 *-tqm8541|*-mpc8560*|*-tqm8560|*-tqm8555*) 178 platformo=$object/cuboot-85xx-cpm2.o 179 ;; 180 *-mpc85*) 181 platformo=$object/cuboot-85xx.o 182 ;; 183 esac 184 ;; 185ps3) 186 platformo="$object/ps3-head.o $object/ps3-hvcall.o $object/ps3.o" 187 lds=$object/zImage.ps3.lds 188 gzip= 189 ext=bin 190 objflags="-O binary --set-section-flags=.bss=contents,alloc,load,data" 191 ksection=.kernel:vmlinux.bin 192 isection=.kernel:initrd 193 ;; 194ep88xc|ep405|redboot*|ep8248e) 195 platformo="$object/fixed-head.o $object/$platform.o" 196 binary=y 197 ;; 198esac 199 200vmz="$tmpdir/`basename \"$kernel\"`.$ext" 201if [ -z "$cacheit" -o ! -f "$vmz$gzip" -o "$vmz$gzip" -ot "$kernel" ]; then 202 ${CROSS}objcopy $objflags "$kernel" "$vmz.$$" 203 204 if [ -n "$gzip" ]; then 205 gzip -f -9 "$vmz.$$" 206 fi 207 208 if [ -n "$cacheit" ]; then 209 mv -f "$vmz.$$$gzip" "$vmz$gzip" 210 else 211 vmz="$vmz.$$" 212 fi 213fi 214 215vmz="$vmz$gzip" 216 217# Extract kernel version information, some platforms want to include 218# it in the image header 219version=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \ 220 cut -d' ' -f3` 221if [ -n "$version" ]; then 222 uboot_version="-n Linux-$version" 223fi 224 225case "$platform" in 226uboot) 227 rm -f "$ofile" 228 mkimage -A ppc -O linux -T kernel -C gzip -a 00000000 -e 00000000 \ 229 $uboot_version -d "$vmz" "$ofile" 230 if [ -z "$cacheit" ]; then 231 rm -f "$vmz" 232 fi 233 exit 0 234 ;; 235esac 236 237addsec() { 238 ${CROSS}objcopy $4 $1 \ 239 --add-section=$3="$2" \ 240 --set-section-flags=$3=contents,alloc,load,readonly,data 241} 242 243addsec $tmp "$vmz" $ksection $object/empty.o 244if [ -z "$cacheit" ]; then 245 rm -f "$vmz" 246fi 247 248if [ -n "$initrd" ]; then 249 addsec $tmp "$initrd" $isection 250fi 251 252if [ -n "$dtb" ]; then 253 addsec $tmp "$dtb" .kernel:dtb 254 if [ -n "$dts" ]; then 255 rm $dtb 256 fi 257fi 258 259if [ "$platform" != "miboot" ]; then 260 ${CROSS}ld -m elf32ppc -T $lds -o "$ofile" \ 261 $platformo $tmp $object/wrapper.a 262 rm $tmp 263fi 264 265# Some platforms need the zImage's entry point and base address 266base=0x`${CROSS}nm "$ofile" | grep ' _start$' | cut -d' ' -f1` 267entry=`${CROSS}objdump -f "$ofile" | grep '^start address ' | cut -d' ' -f3` 268 269if [ -n "$binary" ]; then 270 mv "$ofile" "$ofile".elf 271 ${CROSS}objcopy -O binary "$ofile".elf "$ofile" 272fi 273 274# post-processing needed for some platforms 275case "$platform" in 276pseries|chrp) 277 $objbin/addnote "$ofile" 278 ;; 279coff) 280 ${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile" 281 $objbin/hack-coff "$ofile" 282 ;; 283cuboot*) 284 gzip -f -9 "$ofile" 285 mkimage -A ppc -O linux -T kernel -C gzip -a "$base" -e "$entry" \ 286 $uboot_version -d "$ofile".gz "$ofile" 287 ;; 288treeboot*) 289 mv "$ofile" "$ofile.elf" 290 $objbin/mktree "$ofile.elf" "$ofile" "$base" "$entry" 291 if [ -z "$cacheit" ]; then 292 rm -f "$ofile.elf" 293 fi 294 exit 0 295 ;; 296ps3) 297 # The ps3's loader supports loading gzipped binary images from flash 298 # rom to addr zero. The loader enters the image at addr 0x100. A 299 # bootwrapper overlay is use to arrange for the kernel to be loaded 300 # to addr zero and to have a suitable bootwrapper entry at 0x100. 301 # To construct the rom image, 0x100 bytes from offset 0x100 in the 302 # kernel is copied to the bootwrapper symbol __system_reset_kernel. 303 # The 0x100 bytes at the bootwrapper symbol __system_reset_overlay is 304 # then copied to offset 0x100. At runtime the bootwrapper program 305 # copies the 0x100 bytes at __system_reset_kernel to addr 0x100. 306 307 system_reset_overlay=0x`${CROSS}nm "$ofile" \ 308 | grep ' __system_reset_overlay$' \ 309 | cut -d' ' -f1` 310 system_reset_overlay=`printf "%d" $system_reset_overlay` 311 system_reset_kernel=0x`${CROSS}nm "$ofile" \ 312 | grep ' __system_reset_kernel$' \ 313 | cut -d' ' -f1` 314 system_reset_kernel=`printf "%d" $system_reset_kernel` 315 overlay_dest="256" 316 overlay_size="256" 317 318 ${CROSS}objcopy -O binary "$ofile" "$ofile.bin" 319 320 dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \ 321 skip=$overlay_dest seek=$system_reset_kernel \ 322 count=$overlay_size bs=1 323 324 dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \ 325 skip=$system_reset_overlay seek=$overlay_dest \ 326 count=$overlay_size bs=1 327 328 odir="$(dirname "$ofile.bin")" 329 rm -f "$odir/otheros.bld" 330 gzip --force -9 --stdout "$ofile.bin" > "$odir/otheros.bld" 331 ;; 332esac 333