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 $kernel.strip.gz (use if present & newer, else make)
18 # -C prefix specify command prefix for cross-building tools
19 # (strip, objcopy, ld)
20 # -D dir specify directory containing data files used by script
21 # (default ./arch/powerpc/boot)
22 # -W dir specify working directory for temporary files (default .)
24 # Stop execution if any command fails
27 # Allow for verbose output
45 # cross-compilation prefix
48 # mkimage wrapper script
49 MKIMAGE=$srctree/scripts/mkuboot.sh
51 # directory for object and other files used by this script
52 object=arch/powerpc/boot
56 # directory for working files
60 echo 'Usage: wrapper [-o output] [-p platform] [-i initrd]' >&2
61 echo ' [-d devtree] [-s tree.dts] [-c] [-C cross-prefix]' >&2
62 echo ' [-D datadir] [-W workingdir] [--no-gzip] [vmlinux]' >&2
66 while [ "$#" -gt 0 ]; do
70 [ "$#" -gt 0 ] || usage
75 [ "$#" -gt 0 ] || usage
80 [ "$#" -gt 0 ] || usage
85 [ "$#" -gt 0 ] || usage
90 [ "$#" -gt 0 ] || usage
98 [ "$#" -gt 0 ] || usage
103 [ "$#" -gt 0 ] || usage
109 [ "$#" -gt 0 ] || usage
119 [ -z "$kernel" ] || usage
126 if [ -n "$dts" ]; then
127 if [ ! -r "$dts" -a -r "$object/dts/$dts" ]; then
128 dts="$object/dts/$dts"
130 if [ -z "$dtb" ]; then
133 $dtc -O dtb -o "$dtb" -b 0 "$dts"
136 if [ -z "$kernel" ]; then
140 elfformat="`${CROSS}objdump -p "$kernel" | grep 'file format' | awk '{print $4}'`"
142 elf64-powerpcle) format=elf64lppc ;;
143 elf64-powerpc) format=elf32ppc ;;
144 elf32-powerpc) format=elf32ppc ;;
148 platformo=$object/"$platform".o
149 lds=$object/zImage.lds
152 tmp=$tmpdir/zImage.$$.o
153 ksection=.kernel:vmlinux.strip
154 isection=.kernel:initrd
155 link_address='0x400000'
160 platformo="$object/of.o $object/epapr.o"
164 platformo="$object/pseries-head.o $object/of.o $object/epapr.o"
165 link_address='0x4000000'
166 if [ "$format" != "elf32ppc" ]; then
173 platformo="$object/of.o $object/epapr.o"
174 link_address='0x400000'
178 platformo="$object/of.o $object/epapr.o"
182 platformo="$object/crt0.o $object/of.o $object/epapr.o"
183 lds=$object/zImage.coff.lds
184 link_address='0x500000'
189 # miboot and U-boot want just the bare bits, not an ELF binary
200 *-mpc866ads|*-mpc885ads|*-adder875*|*-ep88xc)
201 platformo=$object/cuboot-8xx.o
204 platformo=$object/cuboot-52xx.o
206 *-pq2fads|*-ep8248e|*-mpc8272*|*-storcenter)
207 platformo=$object/cuboot-pq2.o
210 platformo=$object/cuboot-824x.o
213 platformo=$object/cuboot-83xx.o
215 *-tqm8541|*-mpc8560*|*-tqm8560|*-tqm8555|*-ksi8560*)
216 platformo=$object/cuboot-85xx-cpm2.o
218 *-mpc85*|*-tqm85*|*-sbc85*)
219 platformo=$object/cuboot-85xx.o
222 link_address='0x800000'
227 platformo="$object/ps3-head.o $object/ps3-hvcall.o $object/ps3.o"
228 lds=$object/zImage.ps3.lds
231 objflags="-O binary --set-section-flags=.bss=contents,alloc,load,data"
232 ksection=.kernel:vmlinux.bin
233 isection=.kernel:initrd
238 ep88xc|ep405|ep8248e)
239 platformo="$object/fixed-head.o $object/$platform.o"
243 platformo="$object/fixed-head.o $object/redboot-8xx.o"
246 simpleboot-virtex405-*)
247 platformo="$object/virtex405-head.o $object/simpleboot.o $object/virtex.o"
250 simpleboot-virtex440-*)
251 platformo="$object/fixed-head.o $object/simpleboot.o $object/virtex.o"
255 platformo="$object/fixed-head.o $object/simpleboot.o"
259 platformo="$object/fixed-head.o $object/redboot-83xx.o"
263 link_address='0x1400000'
264 platformo=$object/cuboot-85xx.o
267 link_address='0x600000'
268 platformo="$object/$platform-head.o $object/$platform.o"
271 link_address='0x1000000'
273 treeboot-iss4xx-mpic)
274 platformo="$object/treeboot-iss4xx.o"
277 platformo="$object/epapr.o $object/epapr-wrapper.o"
278 link_address='0x20000000'
282 platformo="$object/fixed-head.o $object/mvme5100.o"
287 vmz="$tmpdir/`basename \"$kernel\"`.$ext"
288 if [ -z "$cacheit" -o ! -f "$vmz$gzip" -o "$vmz$gzip" -ot "$kernel" ]; then
289 ${CROSS}objcopy $objflags "$kernel" "$vmz.$$"
291 strip_size=$(stat -c %s $vmz.$$)
293 if [ -n "$gzip" ]; then
294 gzip -n -f -9 "$vmz.$$"
297 if [ -n "$cacheit" ]; then
298 mv -f "$vmz.$$$gzip" "$vmz$gzip"
303 # Calculate the vmlinux.strip size
304 ${CROSS}objcopy $objflags "$kernel" "$vmz.$$"
305 strip_size=$(stat -c %s $vmz.$$)
309 if [ "$make_space" = "y" ]; then
310 # Round the size to next higher MB limit
311 round_size=$(((strip_size + 0xfffff) & 0xfff00000))
313 round_size=0x$(printf "%x" $round_size)
314 link_addr=$(printf "%d" $link_address)
316 if [ $link_addr -lt $strip_size ]; then
317 echo "INFO: Uncompressed kernel (size 0x$(printf "%x\n" $strip_size))" \
318 "overlaps the address of the wrapper($link_address)"
319 echo "INFO: Fixing the link_address of wrapper to ($round_size)"
320 link_address=$round_size
326 # Extract kernel version information, some platforms want to include
327 # it in the image header
328 version=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \
330 if [ -n "$version" ]; then
331 uboot_version="-n Linux-$version"
334 # physical offset of kernel image
335 membase=`${CROSS}objdump -p "$kernel" | grep -m 1 LOAD | awk '{print $7}'`
340 ${MKIMAGE} -A ppc -O linux -T kernel -C gzip -a $membase -e $membase \
341 $uboot_version -d "$vmz" "$ofile"
342 if [ -z "$cacheit" ]; then
349 # obs600 wants a multi image with an initrd, so we need to put a fake
350 # one in even when building a "normal" image.
351 if [ -n "$initrd" ]; then
355 echo "\0" >>"$real_rd"
357 ${MKIMAGE} -A ppc -O linux -T multi -C gzip -a $membase -e $membase \
358 $uboot_version -d "$vmz":"$real_rd":"$dtb" "$ofile"
359 if [ -z "$initrd" ]; then
362 if [ -z "$cacheit" ]; then
370 ${CROSS}objcopy $4 $1 \
371 --add-section=$3="$2" \
372 --set-section-flags=$3=contents,alloc,load,readonly,data
375 addsec $tmp "$vmz" $ksection $object/empty.o
376 if [ -z "$cacheit" ]; then
380 if [ -n "$initrd" ]; then
381 addsec $tmp "$initrd" $isection
384 if [ -n "$dtb" ]; then
385 addsec $tmp "$dtb" .kernel:dtb
386 if [ -n "$dts" ]; then
391 if [ "$platform" != "miboot" ]; then
392 if [ -n "$link_address" ] ; then
393 text_start="-Ttext $link_address"
395 ${CROSS}ld -m $format -T $lds $text_start $pie -o "$ofile" \
396 $platformo $tmp $object/wrapper.a
400 # Some platforms need the zImage's entry point and base address
401 base=0x`${CROSS}nm "$ofile" | grep ' _start$' | cut -d' ' -f1`
402 entry=`${CROSS}objdump -f "$ofile" | grep '^start address ' | cut -d' ' -f3`
404 if [ -n "$binary" ]; then
405 mv "$ofile" "$ofile".elf
406 ${CROSS}objcopy -O binary "$ofile".elf "$ofile"
409 # post-processing needed for some platforms
412 $objbin/addnote "$ofile"
415 ${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile"
416 $objbin/hack-coff "$ofile"
419 gzip -n -f -9 "$ofile"
420 ${MKIMAGE} -A ppc -O linux -T kernel -C gzip -a "$base" -e "$entry" \
421 $uboot_version -d "$ofile".gz "$ofile"
424 mv "$ofile" "$ofile.elf"
425 $objbin/mktree "$ofile.elf" "$ofile" "$base" "$entry"
426 if [ -z "$cacheit" ]; then
432 # The ps3's loader supports loading a gzipped binary image from flash
433 # rom to ram addr zero. The loader then enters the system reset
434 # vector at addr 0x100. A bootwrapper overlay is used to arrange for
435 # a binary image of the kernel to be at addr zero, and yet have a
436 # suitable bootwrapper entry at 0x100. To construct the final rom
437 # image 512 bytes from offset 0x100 is copied to the bootwrapper
438 # place holder at symbol __system_reset_kernel. The 512 bytes of the
439 # bootwrapper entry code at symbol __system_reset_overlay is then
440 # copied to offset 0x100. At runtime the bootwrapper program copies
441 # the data at __system_reset_kernel back to addr 0x100.
443 system_reset_overlay=0x`${CROSS}nm "$ofile" \
444 | grep ' __system_reset_overlay$' \
446 system_reset_overlay=`printf "%d" $system_reset_overlay`
447 system_reset_kernel=0x`${CROSS}nm "$ofile" \
448 | grep ' __system_reset_kernel$' \
450 system_reset_kernel=`printf "%d" $system_reset_kernel`
454 ${CROSS}objcopy -O binary "$ofile" "$ofile.bin"
456 dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \
457 skip=$overlay_dest seek=$system_reset_kernel \
458 count=$overlay_size bs=1
460 dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \
461 skip=$system_reset_overlay seek=$overlay_dest \
462 count=$overlay_size bs=1
464 odir="$(dirname "$ofile.bin")"
465 rm -f "$odir/otheros.bld"
466 gzip -n --force -9 --stdout "$ofile.bin" > "$odir/otheros.bld"