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 elfformat="`${CROSS}objdump -p "$kernel" | grep 'file format' | awk '{print $4}'`"
159 elf64-powerpcle) format=elf64lppc ;;
160 elf64-powerpc) format=elf32ppc ;;
161 elf32-powerpc) format=elf32ppc ;;
166 # Poached from scripts/ld-version.sh, but we don't want to call that because
167 # this script (wrapper) is distributed separately from the kernel source.
168 # Extract linker version number from stdin and turn into single number.
171 gsub(".*version ", "");
174 print a[1]*100000000 + a[2]*1000000 + a[3]*10000;
179 # Do not include PT_INTERP segment when linking pie. Non-pie linking
180 # just ignores this option.
181 LD_VERSION=$(${CROSS}ld --version | ld_version)
182 LD_NO_DL_MIN_VERSION=$(echo 2.26 | ld_version)
183 if [ "$LD_VERSION" -ge "$LD_NO_DL_MIN_VERSION" ] ; then
184 nodl="--no-dynamic-linker"
187 platformo=$object/"$platform".o
188 lds=$object/zImage.lds
191 tmp=$tmpdir/zImage.$$.o
192 ksection=.kernel:vmlinux.strip
193 isection=.kernel:initrd
194 link_address='0x400000'
199 platformo="$object/of.o $object/epapr.o"
203 platformo="$object/pseries-head.o $object/of.o $object/epapr.o"
204 link_address='0x4000000'
205 if [ "$format" != "elf32ppc" ]; then
212 platformo="$object/of.o $object/epapr.o"
213 link_address='0x400000'
217 platformo="$object/of.o $object/epapr.o"
221 platformo="$object/crt0.o $object/of.o $object/epapr.o"
222 lds=$object/zImage.coff.lds
223 link_address='0x500000'
228 # miboot and U-boot want just the bare bits, not an ELF binary
239 *-mpc866ads|*-mpc885ads|*-adder875*|*-ep88xc)
240 platformo=$object/cuboot-8xx.o
243 platformo=$object/cuboot-52xx.o
245 *-pq2fads|*-ep8248e|*-mpc8272*|*-storcenter)
246 platformo=$object/cuboot-pq2.o
249 platformo=$object/cuboot-824x.o
252 platformo=$object/cuboot-83xx.o
254 *-tqm8541|*-mpc8560*|*-tqm8560|*-tqm8555|*-ksi8560*)
255 platformo=$object/cuboot-85xx-cpm2.o
257 *-mpc85*|*-tqm85*|*-sbc85*)
258 platformo=$object/cuboot-85xx.o
261 link_address='0x800000'
266 platformo="$object/ps3-head.o $object/ps3-hvcall.o $object/ps3.o"
267 lds=$object/zImage.ps3.lds
270 objflags="-O binary --set-section-flags=.bss=contents,alloc,load,data"
271 ksection=.kernel:vmlinux.bin
272 isection=.kernel:initrd
277 ep88xc|ep405|ep8248e)
278 platformo="$object/fixed-head.o $object/$platform.o"
282 platformo="$object/fixed-head.o $object/redboot-8xx.o"
285 simpleboot-virtex405-*)
286 platformo="$object/virtex405-head.o $object/simpleboot.o $object/virtex.o"
289 simpleboot-virtex440-*)
290 platformo="$object/fixed-head.o $object/simpleboot.o $object/virtex.o"
294 platformo="$object/fixed-head.o $object/simpleboot.o"
298 platformo="$object/fixed-head.o $object/redboot-83xx.o"
302 link_address='0x1400000'
303 platformo=$object/cuboot-85xx.o
306 link_address='0x600000'
307 platformo="$object/$platform-head.o $object/$platform.o"
310 link_address='0x1000000'
313 link_address='0x1000000'
315 treeboot-iss4xx-mpic)
316 platformo="$object/treeboot-iss4xx.o"
319 platformo="$object/pseries-head.o $object/epapr.o $object/epapr-wrapper.o"
320 link_address='0x20000000'
324 platformo="$object/fixed-head.o $object/mvme5100.o"
329 vmz="$tmpdir/`basename \"$kernel\"`.$ext"
330 if [ -z "$cacheit" -o ! -f "$vmz$gzip" -o "$vmz$gzip" -ot "$kernel" ]; then
331 ${CROSS}objcopy $objflags "$kernel" "$vmz.$$"
333 strip_size=$(stat -c %s $vmz.$$)
335 if [ -n "$gzip" ]; then
336 gzip -n -f -9 "$vmz.$$"
339 if [ -n "$cacheit" ]; then
340 mv -f "$vmz.$$$gzip" "$vmz$gzip"
345 # Calculate the vmlinux.strip size
346 ${CROSS}objcopy $objflags "$kernel" "$vmz.$$"
347 strip_size=$(stat -c %s $vmz.$$)
351 if [ "$make_space" = "y" ]; then
352 # Round the size to next higher MB limit
353 round_size=$(((strip_size + 0xfffff) & 0xfff00000))
355 round_size=0x$(printf "%x" $round_size)
356 link_addr=$(printf "%d" $link_address)
358 if [ $link_addr -lt $strip_size ]; then
359 echo "INFO: Uncompressed kernel (size 0x$(printf "%x\n" $strip_size))" \
360 "overlaps the address of the wrapper($link_address)"
361 echo "INFO: Fixing the link_address of wrapper to ($round_size)"
362 link_address=$round_size
368 # Extract kernel version information, some platforms want to include
369 # it in the image header
370 version=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \
372 if [ -n "$version" ]; then
373 uboot_version="-n Linux-$version"
376 # physical offset of kernel image
377 membase=`${CROSS}objdump -p "$kernel" | grep -m 1 LOAD | awk '{print $7}'`
382 ${MKIMAGE} -A ppc -O linux -T kernel -C gzip -a $membase -e $membase \
383 $uboot_version -d "$vmz" "$ofile"
384 if [ -z "$cacheit" ]; then
391 # obs600 wants a multi image with an initrd, so we need to put a fake
392 # one in even when building a "normal" image.
393 if [ -n "$initrd" ]; then
397 echo "\0" >>"$real_rd"
399 ${MKIMAGE} -A ppc -O linux -T multi -C gzip -a $membase -e $membase \
400 $uboot_version -d "$vmz":"$real_rd":"$dtb" "$ofile"
401 if [ -z "$initrd" ]; then
404 if [ -z "$cacheit" ]; then
412 ${CROSS}objcopy $4 $1 \
413 --add-section=$3="$2" \
414 --set-section-flags=$3=contents,alloc,load,readonly,data
417 addsec $tmp "$vmz" $ksection $object/empty.o
418 if [ -z "$cacheit" ]; then
422 if [ -n "$initrd" ]; then
423 addsec $tmp "$initrd" $isection
426 if [ -n "$dtb" ]; then
427 addsec $tmp "$dtb" .kernel:dtb
428 if [ -n "$dts" ]; then
433 if [ "$platform" != "miboot" ]; then
434 if [ -n "$link_address" ] ; then
435 text_start="-Ttext $link_address"
437 ${CROSS}ld -m $format -T $lds $text_start $pie $nodl -o "$ofile" \
438 $platformo $tmp $object/wrapper.a
442 # Some platforms need the zImage's entry point and base address
443 base=0x`${CROSS}nm "$ofile" | grep ' _start$' | cut -d' ' -f1`
444 entry=`${CROSS}objdump -f "$ofile" | grep '^start address ' | cut -d' ' -f3`
446 if [ -n "$binary" ]; then
447 mv "$ofile" "$ofile".elf
448 ${CROSS}objcopy -O binary "$ofile".elf "$ofile"
451 # post-processing needed for some platforms
454 $objbin/addnote "$ofile"
457 ${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile"
458 $objbin/hack-coff "$ofile"
461 gzip -n -f -9 "$ofile"
462 ${MKIMAGE} -A ppc -O linux -T kernel -C gzip -a "$base" -e "$entry" \
463 $uboot_version -d "$ofile".gz "$ofile"
466 mv "$ofile" "$ofile.elf"
467 $objbin/mktree "$ofile.elf" "$ofile" "$base" "$entry"
468 if [ -z "$cacheit" ]; then
474 # The ps3's loader supports loading a gzipped binary image from flash
475 # rom to ram addr zero. The loader then enters the system reset
476 # vector at addr 0x100. A bootwrapper overlay is used to arrange for
477 # a binary image of the kernel to be at addr zero, and yet have a
478 # suitable bootwrapper entry at 0x100. To construct the final rom
479 # image 512 bytes from offset 0x100 is copied to the bootwrapper
480 # place holder at symbol __system_reset_kernel. The 512 bytes of the
481 # bootwrapper entry code at symbol __system_reset_overlay is then
482 # copied to offset 0x100. At runtime the bootwrapper program copies
483 # the data at __system_reset_kernel back to addr 0x100.
485 system_reset_overlay=0x`${CROSS}nm "$ofile" \
486 | grep ' __system_reset_overlay$' \
488 system_reset_overlay=`printf "%d" $system_reset_overlay`
489 system_reset_kernel=0x`${CROSS}nm "$ofile" \
490 | grep ' __system_reset_kernel$' \
492 system_reset_kernel=`printf "%d" $system_reset_kernel`
496 ${CROSS}objcopy -O binary "$ofile" "$ofile.bin"
498 run_cmd dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \
499 skip=$overlay_dest seek=$system_reset_kernel \
500 count=$overlay_size bs=1
502 run_cmd dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \
503 skip=$system_reset_overlay seek=$overlay_dest \
504 count=$overlay_size bs=1
506 odir="$(dirname "$ofile.bin")"
507 rm -f "$odir/otheros.bld"
508 gzip -n --force -9 --stdout "$ofile.bin" > "$odir/otheros.bld"