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'
151 platformo
="$object/of.o $object/epapr.o"
155 platformo
="$object/of.o $object/epapr.o"
156 link_address
='0x4000000'
160 platformo
="$object/of.o $object/epapr.o"
161 link_address
='0x400000'
165 platformo
="$object/of.o $object/epapr.o"
169 platformo
="$object/crt0.o $object/of.o $object/epapr.o"
170 lds
=$object/zImage.coff.lds
171 link_address
='0x500000'
176 # miboot and U-boot want just the bare bits, not an ELF binary
187 *-mpc866ads|
*-mpc885ads|
*-adder875*|
*-ep88xc)
188 platformo
=$object/cuboot-8xx.o
191 platformo
=$object/cuboot-52xx.o
193 *-pq2fads|
*-ep8248e|
*-mpc8272*|
*-storcenter)
194 platformo
=$object/cuboot-pq2.o
197 platformo
=$object/cuboot-824x.o
200 platformo
=$object/cuboot-83xx.o
202 *-tqm8541|
*-mpc8560*|
*-tqm8560|
*-tqm8555|
*-ksi8560*)
203 platformo
=$object/cuboot-85xx-cpm2.o
205 *-mpc85*|
*-tqm85*|
*-sbc85*)
206 platformo
=$object/cuboot-85xx.o
209 link_address
='0x800000'
214 platformo
="$object/ps3-head.o $object/ps3-hvcall.o $object/ps3.o"
215 lds
=$object/zImage.ps3.lds
218 objflags
="-O binary --set-section-flags=.bss=contents,alloc,load,data"
219 ksection
=.kernel
:vmlinux.bin
220 isection
=.kernel
:initrd
225 ep88xc|ep405|ep8248e
)
226 platformo
="$object/fixed-head.o $object/$platform.o"
230 platformo
="$object/fixed-head.o $object/redboot-8xx.o"
233 simpleboot-virtex405-
*)
234 platformo
="$object/virtex405-head.o $object/simpleboot.o $object/virtex.o"
237 simpleboot-virtex440-
*)
238 platformo
="$object/fixed-head.o $object/simpleboot.o $object/virtex.o"
242 platformo
="$object/fixed-head.o $object/simpleboot.o"
246 platformo
="$object/fixed-head.o $object/redboot-83xx.o"
250 link_address
='0x1400000'
251 platformo
=$object/cuboot-85xx.o
254 link_address
='0x600000'
255 platformo
="$object/$platform-head.o $object/$platform.o"
258 link_address
='0x1000000'
260 treeboot-iss4xx-mpic
)
261 platformo
="$object/treeboot-iss4xx.o"
264 platformo
="$object/epapr.o $object/epapr-wrapper.o"
265 link_address
='0x20000000'
269 platformo
="$object/fixed-head.o $object/mvme5100.o"
274 vmz
="$tmpdir/`basename \"$kernel\"`.$ext"
275 if [ -z "$cacheit" -o ! -f "$vmz$gzip" -o "$vmz$gzip" -ot "$kernel" ]; then
276 ${CROSS}objcopy
$objflags "$kernel" "$vmz.$$"
278 strip_size
=$
(stat
-c %s
$vmz.$$
)
280 if [ -n "$gzip" ]; then
281 gzip -n -f -9 "$vmz.$$"
284 if [ -n "$cacheit" ]; then
285 mv -f "$vmz.$$$gzip" "$vmz$gzip"
290 # Calculate the vmlinux.strip size
291 ${CROSS}objcopy
$objflags "$kernel" "$vmz.$$"
292 strip_size
=$
(stat
-c %s
$vmz.$$
)
296 if [ "$make_space" = "y" ]; then
297 # Round the size to next higher MB limit
298 round_size
=$
(((strip_size
+ 0xfffff) & 0xfff00000))
300 round_size
=0x$
(printf "%x" $round_size)
301 link_addr
=$
(printf "%d" $link_address)
303 if [ $link_addr -lt $strip_size ]; then
304 echo "INFO: Uncompressed kernel (size 0x$(printf "%x
\n" $strip_size))" \
305 "overlaps the address of the wrapper($link_address)"
306 echo "INFO: Fixing the link_address of wrapper to ($round_size)"
307 link_address
=$round_size
313 # Extract kernel version information, some platforms want to include
314 # it in the image header
315 version
=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \
317 if [ -n "$version" ]; then
318 uboot_version
="-n Linux-$version"
321 # physical offset of kernel image
322 membase
=`${CROSS}objdump -p "$kernel" | grep -m 1 LOAD | awk '{print $7}'`
327 ${MKIMAGE} -A ppc
-O linux
-T kernel
-C gzip -a $membase -e $membase \
328 $uboot_version -d "$vmz" "$ofile"
329 if [ -z "$cacheit" ]; then
336 # obs600 wants a multi image with an initrd, so we need to put a fake
337 # one in even when building a "normal" image.
338 if [ -n "$initrd" ]; then
342 echo "\0" >>"$real_rd"
344 ${MKIMAGE} -A ppc
-O linux
-T multi
-C gzip -a $membase -e $membase \
345 $uboot_version -d "$vmz":"$real_rd":"$dtb" "$ofile"
346 if [ -z "$initrd" ]; then
349 if [ -z "$cacheit" ]; then
357 ${CROSS}objcopy
$4 $1 \
358 --add-section=$3="$2" \
359 --set-section-flags=$3=contents
,alloc
,load
,readonly,data
362 addsec
$tmp "$vmz" $ksection $object/empty.o
363 if [ -z "$cacheit" ]; then
367 if [ -n "$initrd" ]; then
368 addsec
$tmp "$initrd" $isection
371 if [ -n "$dtb" ]; then
372 addsec
$tmp "$dtb" .kernel
:dtb
373 if [ -n "$dts" ]; then
378 if [ "$platform" != "miboot" ]; then
379 if [ -n "$link_address" ] ; then
380 text_start
="-Ttext $link_address"
382 ${CROSS}ld
-m elf32ppc
-T $lds $text_start $pie -o "$ofile" \
383 $platformo $tmp $object/wrapper.a
387 # Some platforms need the zImage's entry point and base address
388 base
=0x
`${CROSS}nm "$ofile" | grep ' _start$' | cut -d' ' -f1`
389 entry
=`${CROSS}objdump -f "$ofile" | grep '^start address ' | cut -d' ' -f3`
391 if [ -n "$binary" ]; then
392 mv "$ofile" "$ofile".elf
393 ${CROSS}objcopy
-O binary
"$ofile".elf
"$ofile"
396 # post-processing needed for some platforms
399 $objbin/addnote
"$ofile"
402 ${CROSS}objcopy
-O aixcoff-rs6000
--set-start "$entry" "$ofile"
403 $objbin/hack-coff
"$ofile"
406 gzip -n -f -9 "$ofile"
407 ${MKIMAGE} -A ppc
-O linux
-T kernel
-C gzip -a "$base" -e "$entry" \
408 $uboot_version -d "$ofile".gz
"$ofile"
411 mv "$ofile" "$ofile.elf"
412 $objbin/mktree
"$ofile.elf" "$ofile" "$base" "$entry"
413 if [ -z "$cacheit" ]; then
419 # The ps3's loader supports loading a gzipped binary image from flash
420 # rom to ram addr zero. The loader then enters the system reset
421 # vector at addr 0x100. A bootwrapper overlay is used to arrange for
422 # a binary image of the kernel to be at addr zero, and yet have a
423 # suitable bootwrapper entry at 0x100. To construct the final rom
424 # image 512 bytes from offset 0x100 is copied to the bootwrapper
425 # place holder at symbol __system_reset_kernel. The 512 bytes of the
426 # bootwrapper entry code at symbol __system_reset_overlay is then
427 # copied to offset 0x100. At runtime the bootwrapper program copies
428 # the data at __system_reset_kernel back to addr 0x100.
430 system_reset_overlay
=0x
`${CROSS}nm "$ofile" \
431 | grep ' __system_reset_overlay$' \
433 system_reset_overlay
=`printf "%d" $system_reset_overlay`
434 system_reset_kernel
=0x
`${CROSS}nm "$ofile" \
435 | grep ' __system_reset_kernel$' \
437 system_reset_kernel
=`printf "%d" $system_reset_kernel`
441 ${CROSS}objcopy
-O binary
"$ofile" "$ofile.bin"
443 dd if="$ofile.bin" of
="$ofile.bin" conv
=notrunc \
444 skip
=$overlay_dest seek
=$system_reset_kernel \
445 count
=$overlay_size bs
=1
447 dd if="$ofile.bin" of
="$ofile.bin" conv
=notrunc \
448 skip
=$system_reset_overlay seek
=$overlay_dest \
449 count
=$overlay_size bs
=1
451 odir
="$(dirname "$ofile.bin
")"
452 rm -f "$odir/otheros.bld"
453 gzip -n --force -9 --stdout "$ofile.bin" > "$odir/otheros.bld"