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.
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
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 $kernel.strip.gz (use if present & newer, else make)
18 # -C prefix specify command prefix for cross-building tools
19 # (strip, objcopy, ld)
20 # -D dir specify directory containing data files used by script
21 # (default ./arch/powerpc/boot)
22 # -W dir specify working directory for temporary files (default .)
24 # Stop execution if any command fails
27 # Allow for verbose output
44 # cross-compilation prefix
47 # mkimage wrapper script
48 MKIMAGE=$srctree/scripts/mkuboot.sh
50 # directory for object and other files used by this script
51 object=arch/powerpc/boot
55 # directory for working files
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
65 while [ "$#" -gt 0 ]; do
69 [ "$#" -gt 0 ] || usage
74 [ "$#" -gt 0 ] || usage
79 [ "$#" -gt 0 ] || usage
84 [ "$#" -gt 0 ] || usage
89 [ "$#" -gt 0 ] || usage
97 [ "$#" -gt 0 ] || usage
102 [ "$#" -gt 0 ] || usage
108 [ "$#" -gt 0 ] || usage
118 [ -z "$kernel" ] || usage
125 if [ -n "$dts" ]; then
126 if [ ! -r "$dts" -a -r "$object/dts/$dts" ]; then
127 dts="$object/dts/$dts"
129 if [ -z "$dtb" ]; then
132 $dtc -O dtb -o "$dtb" -b 0 "$dts"
135 if [ -z "$kernel" ]; then
139 platformo=$object/"$platform".o
140 lds=$object/zImage.lds
143 tmp=$tmpdir/zImage.$$.o
144 ksection=.kernel:vmlinux.strip
145 isection=.kernel:initrd
146 link_address='0x400000'
150 platformo=$object/of.o
151 link_address='0x4000000'
154 platformo=$object/of.o
155 link_address='0x400000'
158 platformo=$object/of.o
161 platformo="$object/crt0.o $object/of.o"
162 lds=$object/zImage.coff.lds
163 link_address='0x500000'
167 # miboot and U-boot want just the bare bits, not an ELF binary
178 *-mpc866ads|*-mpc885ads|*-adder875*|*-ep88xc)
179 platformo=$object/cuboot-8xx.o
182 platformo=$object/cuboot-52xx.o
184 *-pq2fads|*-ep8248e|*-mpc8272*|*-storcenter)
185 platformo=$object/cuboot-pq2.o
188 platformo=$object/cuboot-824x.o
191 platformo=$object/cuboot-83xx.o
193 *-tqm8541|*-mpc8560*|*-tqm8560|*-tqm8555|*-ksi8560*)
194 platformo=$object/cuboot-85xx-cpm2.o
196 *-mpc85*|*-tqm85*|*-sbc85*)
197 platformo=$object/cuboot-85xx.o
200 link_address='0x800000'
205 platformo="$object/ps3-head.o $object/ps3-hvcall.o $object/ps3.o"
206 lds=$object/zImage.ps3.lds
209 objflags="-O binary --set-section-flags=.bss=contents,alloc,load,data"
210 ksection=.kernel:vmlinux.bin
211 isection=.kernel:initrd
215 ep88xc|ep405|ep8248e)
216 platformo="$object/fixed-head.o $object/$platform.o"
220 platformo="$object/fixed-head.o $object/redboot-8xx.o"
223 simpleboot-virtex405-*)
224 platformo="$object/virtex405-head.o $object/simpleboot.o $object/virtex.o"
227 simpleboot-virtex440-*)
228 platformo="$object/fixed-head.o $object/simpleboot.o $object/virtex.o"
232 platformo="$object/fixed-head.o $object/simpleboot.o"
236 platformo="$object/fixed-head.o $object/redboot-83xx.o"
240 link_address='0x1400000'
241 platformo=$object/cuboot-85xx.o
244 link_address='0x600000'
245 platformo="$object/$platform-head.o $object/$platform.o"
247 treeboot-iss4xx-mpic)
248 platformo="$object/treeboot-iss4xx.o"
251 link_address='0x20000000'
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.$$"
260 if [ -n "$gzip" ]; then
261 gzip -n -f -9 "$vmz.$$"
264 if [ -n "$cacheit" ]; then
265 mv -f "$vmz.$$$gzip" "$vmz$gzip"
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.]' | \
277 if [ -n "$version" ]; then
278 uboot_version="-n Linux-$version"
281 # physical offset of kernel image
282 membase=`${CROSS}objdump -p "$kernel" | grep -m 1 LOAD | awk '{print $7}'`
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
297 ${CROSS}objcopy $4 $1 \
298 --add-section=$3="$2" \
299 --set-section-flags=$3=contents,alloc,load,readonly,data
302 addsec $tmp "$vmz" $ksection $object/empty.o
303 if [ -z "$cacheit" ]; then
307 if [ -n "$initrd" ]; then
308 addsec $tmp "$initrd" $isection
311 if [ -n "$dtb" ]; then
312 addsec $tmp "$dtb" .kernel:dtb
313 if [ -n "$dts" ]; then
318 if [ "$platform" != "miboot" ]; then
319 if [ -n "$link_address" ] ; then
320 text_start="-Ttext $link_address"
322 ${CROSS}ld -m elf32ppc -T $lds $text_start $pie -o "$ofile" \
323 $platformo $tmp $object/wrapper.a
327 # Some platforms need the zImage's entry point and base address
328 base=0x`${CROSS}nm "$ofile" | grep ' _start$' | cut -d' ' -f1`
329 entry=`${CROSS}objdump -f "$ofile" | grep '^start address ' | cut -d' ' -f3`
331 if [ -n "$binary" ]; then
332 mv "$ofile" "$ofile".elf
333 ${CROSS}objcopy -O binary "$ofile".elf "$ofile"
336 # post-processing needed for some platforms
339 $objbin/addnote "$ofile"
342 ${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile"
343 $objbin/hack-coff "$ofile"
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 "$ofile"
351 mv "$ofile" "$ofile.elf"
352 $objbin/mktree "$ofile.elf" "$ofile" "$base" "$entry"
353 if [ -z "$cacheit" ]; then
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.
370 system_reset_overlay=0x`${CROSS}nm "$ofile" \
371 | grep ' __system_reset_overlay$' \
373 system_reset_overlay=`printf "%d" $system_reset_overlay`
374 system_reset_kernel=0x`${CROSS}nm "$ofile" \
375 | grep ' __system_reset_kernel$' \
377 system_reset_kernel=`printf "%d" $system_reset_kernel`
381 ${CROSS}objcopy -O binary "$ofile" "$ofile.bin"
383 dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \
384 skip=$overlay_dest seek=$system_reset_kernel \
385 count=$overlay_size bs=1
387 dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \
388 skip=$system_reset_overlay seek=$overlay_dest \
389 count=$overlay_size bs=1
391 odir="$(dirname "$ofile.bin")"
392 rm -f "$odir/otheros.bld"
393 gzip -n --force -9 --stdout "$ofile.bin" > "$odir/otheros.bld"