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
75 if [ $? -ne "0" ]; then
83 while [ "$#" -gt 0 ]; do
87 [ "$#" -gt 0 ] || usage
92 [ "$#" -gt 0 ] || usage
97 [ "$#" -gt 0 ] || usage
102 [ "$#" -gt 0 ] || usage
107 [ "$#" -gt 0 ] || usage
115 [ "$#" -gt 0 ] || usage
120 [ "$#" -gt 0 ] || usage
126 [ "$#" -gt 0 ] || usage
136 [ -z "$kernel" ] || usage
143 if [ -n "$dts" ]; then
144 if [ ! -r "$dts" -a -r "$object/dts/$dts" ]; then
145 dts="$object/dts/$dts"
147 if [ -z "$dtb" ]; then
150 $dtc -O dtb -o "$dtb" -b 0 "$dts"
153 if [ -z "$kernel" ]; then
157 LANG=C elfformat="`${CROSS}objdump -p "$kernel" | grep 'file format' | awk '{print $4}'`"
159 elf64-powerpcle) format=elf64lppc ;;
160 elf64-powerpc) format=elf32ppc ;;
161 elf32-powerpc) format=elf32ppc ;;
165 platformo=$object/"$platform".o
166 lds=$object/zImage.lds
169 tmp=$tmpdir/zImage.$$.o
170 ksection=.kernel:vmlinux.strip
171 isection=.kernel:initrd
172 link_address='0x400000'
177 platformo="$object/of.o $object/epapr.o"
181 platformo="$object/pseries-head.o $object/of.o $object/epapr.o"
182 link_address='0x4000000'
183 if [ "$format" != "elf32ppc" ]; then
190 platformo="$object/of.o $object/epapr.o"
191 link_address='0x400000'
195 platformo="$object/of.o $object/epapr.o"
199 platformo="$object/crt0.o $object/of.o $object/epapr.o"
200 lds=$object/zImage.coff.lds
201 link_address='0x500000'
206 # miboot and U-boot want just the bare bits, not an ELF binary
217 *-mpc866ads|*-mpc885ads|*-adder875*|*-ep88xc)
218 platformo=$object/cuboot-8xx.o
221 platformo=$object/cuboot-52xx.o
223 *-pq2fads|*-ep8248e|*-mpc8272*|*-storcenter)
224 platformo=$object/cuboot-pq2.o
227 platformo=$object/cuboot-824x.o
230 platformo=$object/cuboot-83xx.o
232 *-tqm8541|*-mpc8560*|*-tqm8560|*-tqm8555|*-ksi8560*)
233 platformo=$object/cuboot-85xx-cpm2.o
235 *-mpc85*|*-tqm85*|*-sbc85*)
236 platformo=$object/cuboot-85xx.o
239 link_address='0x800000'
244 platformo="$object/ps3-head.o $object/ps3-hvcall.o $object/ps3.o"
245 lds=$object/zImage.ps3.lds
248 objflags="-O binary --set-section-flags=.bss=contents,alloc,load,data"
249 ksection=.kernel:vmlinux.bin
250 isection=.kernel:initrd
255 ep88xc|ep405|ep8248e)
256 platformo="$object/fixed-head.o $object/$platform.o"
260 platformo="$object/fixed-head.o $object/redboot-8xx.o"
263 simpleboot-virtex405-*)
264 platformo="$object/virtex405-head.o $object/simpleboot.o $object/virtex.o"
267 simpleboot-virtex440-*)
268 platformo="$object/fixed-head.o $object/simpleboot.o $object/virtex.o"
272 platformo="$object/fixed-head.o $object/simpleboot.o"
276 platformo="$object/fixed-head.o $object/redboot-83xx.o"
280 link_address='0x1400000'
281 platformo=$object/cuboot-85xx.o
284 link_address='0x600000'
285 platformo="$object/$platform-head.o $object/$platform.o"
288 link_address='0x1000000'
291 link_address='0x1000000'
293 treeboot-iss4xx-mpic)
294 platformo="$object/treeboot-iss4xx.o"
297 platformo="$object/pseries-head.o $object/epapr.o $object/epapr-wrapper.o"
298 link_address='0x20000000'
302 platformo="$object/fixed-head.o $object/mvme5100.o"
306 platformo="$object/motload-head.o $object/mvme7100.o"
307 link_address='0x4000000'
312 vmz="$tmpdir/`basename \"$kernel\"`.$ext"
313 if [ -z "$cacheit" -o ! -f "$vmz$gzip" -o "$vmz$gzip" -ot "$kernel" ]; then
314 ${CROSS}objcopy $objflags "$kernel" "$vmz.$$"
316 strip_size=$(stat -c %s $vmz.$$)
318 if [ -n "$gzip" ]; then
319 gzip -n -f -9 "$vmz.$$"
322 if [ -n "$cacheit" ]; then
323 mv -f "$vmz.$$$gzip" "$vmz$gzip"
328 # Calculate the vmlinux.strip size
329 ${CROSS}objcopy $objflags "$kernel" "$vmz.$$"
330 strip_size=$(stat -c %s $vmz.$$)
334 if [ "$make_space" = "y" ]; then
335 # Round the size to next higher MB limit
336 round_size=$(((strip_size + 0xfffff) & 0xfff00000))
338 round_size=0x$(printf "%x" $round_size)
339 link_addr=$(printf "%d" $link_address)
341 if [ $link_addr -lt $strip_size ]; then
342 echo "INFO: Uncompressed kernel (size 0x$(printf "%x\n" $strip_size))" \
343 "overlaps the address of the wrapper($link_address)"
344 echo "INFO: Fixing the link_address of wrapper to ($round_size)"
345 link_address=$round_size
351 # Extract kernel version information, some platforms want to include
352 # it in the image header
353 version=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \
355 if [ -n "$version" ]; then
356 uboot_version="-n Linux-$version"
359 # physical offset of kernel image
360 membase=`${CROSS}objdump -p "$kernel" | grep -m 1 LOAD | awk '{print $7}'`
365 ${MKIMAGE} -A ppc -O linux -T kernel -C gzip -a $membase -e $membase \
366 $uboot_version -d "$vmz" "$ofile"
367 if [ -z "$cacheit" ]; then
374 # obs600 wants a multi image with an initrd, so we need to put a fake
375 # one in even when building a "normal" image.
376 if [ -n "$initrd" ]; then
380 echo "\0" >>"$real_rd"
382 ${MKIMAGE} -A ppc -O linux -T multi -C gzip -a $membase -e $membase \
383 $uboot_version -d "$vmz":"$real_rd":"$dtb" "$ofile"
384 if [ -z "$initrd" ]; then
387 if [ -z "$cacheit" ]; then
395 ${CROSS}objcopy $4 $1 \
396 --add-section=$3="$2" \
397 --set-section-flags=$3=contents,alloc,load,readonly,data
400 addsec $tmp "$vmz" $ksection $object/empty.o
401 if [ -z "$cacheit" ]; then
405 if [ -n "$initrd" ]; then
406 addsec $tmp "$initrd" $isection
409 if [ -n "$dtb" ]; then
410 addsec $tmp "$dtb" .kernel:dtb
411 if [ -n "$dts" ]; then
416 if [ "$platform" != "miboot" ]; then
417 if [ -n "$link_address" ] ; then
418 text_start="-Ttext $link_address"
420 ${CROSS}ld -m $format -T $lds $text_start $pie -o "$ofile" \
421 $platformo $tmp $object/wrapper.a
425 # Some platforms need the zImage's entry point and base address
426 base=0x`${CROSS}nm "$ofile" | grep ' _start$' | cut -d' ' -f1`
427 entry=`${CROSS}objdump -f "$ofile" | grep '^start address ' | cut -d' ' -f3`
429 if [ -n "$binary" ]; then
430 mv "$ofile" "$ofile".elf
431 ${CROSS}objcopy -O binary "$ofile".elf "$ofile"
434 # post-processing needed for some platforms
437 $objbin/addnote "$ofile"
440 ${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile"
441 $objbin/hack-coff "$ofile"
444 gzip -n -f -9 "$ofile"
445 ${MKIMAGE} -A ppc -O linux -T kernel -C gzip -a "$base" -e "$entry" \
446 $uboot_version -d "$ofile".gz "$ofile"
449 mv "$ofile" "$ofile.elf"
450 $objbin/mktree "$ofile.elf" "$ofile" "$base" "$entry"
451 if [ -z "$cacheit" ]; then
457 # The ps3's loader supports loading a gzipped binary image from flash
458 # rom to ram addr zero. The loader then enters the system reset
459 # vector at addr 0x100. A bootwrapper overlay is used to arrange for
460 # a binary image of the kernel to be at addr zero, and yet have a
461 # suitable bootwrapper entry at 0x100. To construct the final rom
462 # image 512 bytes from offset 0x100 is copied to the bootwrapper
463 # place holder at symbol __system_reset_kernel. The 512 bytes of the
464 # bootwrapper entry code at symbol __system_reset_overlay is then
465 # copied to offset 0x100. At runtime the bootwrapper program copies
466 # the data at __system_reset_kernel back to addr 0x100.
468 system_reset_overlay=0x`${CROSS}nm "$ofile" \
469 | grep ' __system_reset_overlay$' \
471 system_reset_overlay=`printf "%d" $system_reset_overlay`
472 system_reset_kernel=0x`${CROSS}nm "$ofile" \
473 | grep ' __system_reset_kernel$' \
475 system_reset_kernel=`printf "%d" $system_reset_kernel`
479 ${CROSS}objcopy -O binary "$ofile" "$ofile.bin"
481 run_cmd dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \
482 skip=$overlay_dest seek=$system_reset_kernel \
483 count=$overlay_size bs=1
485 run_cmd dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \
486 skip=$system_reset_overlay seek=$overlay_dest \
487 count=$overlay_size bs=1
489 odir="$(dirname "$ofile.bin")"
490 rm -f "$odir/otheros.bld"
491 gzip -n --force -9 --stdout "$ofile.bin" > "$odir/otheros.bld"