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 $kernel.strip.gz (use if present & newer, else make)
18 # -C prefix specify command prefix for cross-building tools
19 # (strip, objcopy, ld)
20 # -D dir specify directory containing data files used by script
21 # (default ./arch/powerpc/boot)
22 # -W dir specify working directory for temporary files (default .)
24 # Stop execution if any command fails
27 # Allow for verbose output
43 # cross-compilation prefix
46 # directory for object and other files used by this script
47 object=arch/powerpc/boot
50 # directory for working files
54 echo 'Usage: wrapper [-o output] [-p platform] [-i initrd]' >&2
55 echo ' [-d devtree] [-s tree.dts] [-c] [-C cross-prefix]' >&2
56 echo ' [-D datadir] [-W workingdir] [--no-gzip] [vmlinux]' >&2
60 while [ "$#" -gt 0 ]; do
64 [ "$#" -gt 0 ] || usage
69 [ "$#" -gt 0 ] || usage
74 [ "$#" -gt 0 ] || usage
79 [ "$#" -gt 0 ] || usage
84 [ "$#" -gt 0 ] || usage
92 [ "$#" -gt 0 ] || usage
97 [ "$#" -gt 0 ] || usage
103 [ "$#" -gt 0 ] || usage
113 [ -z "$kernel" ] || usage
120 if [ -n "$dts" ]; then
121 if [ ! -r "$dts" -a -r "$object/dts/$dts" ]; then
122 dts="$object/dts/$dts"
124 if [ -z "$dtb" ]; then
127 $object/dtc -O dtb -o "$dtb" -b 0 "$dts"
130 if [ -z "$kernel" ]; then
134 platformo=$object/"$platform".o
135 lds=$object/zImage.lds
138 tmp=$tmpdir/zImage.$$.o
139 ksection=.kernel:vmlinux.strip
140 isection=.kernel:initrd
144 platformo=$object/of.o
147 platformo=$object/of.o
148 lds=$object/zImage.coff.lds
151 # miboot and U-boot want just the bare bits, not an ELF binary
162 *-mpc885ads|*-adder875*|*-ep88xc)
163 platformo=$object/cuboot-8xx.o
166 platformo=$object/cuboot-52xx.o
168 *-pq2fads|*-ep8248e|*-mpc8272*|*-storcenter)
169 platformo=$object/cuboot-pq2.o
172 platformo=$object/cuboot-824x.o
175 platformo=$object/cuboot-83xx.o
177 *-tqm8541|*-mpc8560*|*-tqm8560|*-tqm8555|*-ksi8560*)
178 platformo=$object/cuboot-85xx-cpm2.o
180 *-mpc85*|*-tqm8540|*-sbc85*)
181 platformo=$object/cuboot-85xx.o
186 platformo="$object/ps3-head.o $object/ps3-hvcall.o $object/ps3.o"
187 lds=$object/zImage.ps3.lds
190 objflags="-O binary --set-section-flags=.bss=contents,alloc,load,data"
191 ksection=.kernel:vmlinux.bin
192 isection=.kernel:initrd
194 ep88xc|ep405|ep8248e)
195 platformo="$object/fixed-head.o $object/$platform.o"
199 platformo="$object/fixed-head.o $object/redboot-8xx.o"
202 simpleboot-virtex405-*)
203 platformo="$object/virtex405-head.o $object/simpleboot.o"
208 vmz="$tmpdir/`basename \"$kernel\"`.$ext"
209 if [ -z "$cacheit" -o ! -f "$vmz$gzip" -o "$vmz$gzip" -ot "$kernel" ]; then
210 ${CROSS}objcopy $objflags "$kernel" "$vmz.$$"
212 if [ -n "$gzip" ]; then
216 if [ -n "$cacheit" ]; then
217 mv -f "$vmz.$$$gzip" "$vmz$gzip"
225 # Extract kernel version information, some platforms want to include
226 # it in the image header
227 version=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \
229 if [ -n "$version" ]; then
230 uboot_version="-n Linux-$version"
233 # physical offset of kernel image
234 membase=`${CROSS}objdump -p "$kernel" | grep -m 1 LOAD | awk '{print $7}'`
239 mkimage -A ppc -O linux -T kernel -C gzip -a $membase -e $membase \
240 $uboot_version -d "$vmz" "$ofile"
241 if [ -z "$cacheit" ]; then
249 ${CROSS}objcopy $4 $1 \
250 --add-section=$3="$2" \
251 --set-section-flags=$3=contents,alloc,load,readonly,data
254 addsec $tmp "$vmz" $ksection $object/empty.o
255 if [ -z "$cacheit" ]; then
259 if [ -n "$initrd" ]; then
260 addsec $tmp "$initrd" $isection
263 if [ -n "$dtb" ]; then
264 addsec $tmp "$dtb" .kernel:dtb
265 if [ -n "$dts" ]; then
270 if [ "$platform" != "miboot" ]; then
271 ${CROSS}ld -m elf32ppc -T $lds -o "$ofile" \
272 $platformo $tmp $object/wrapper.a
276 # Some platforms need the zImage's entry point and base address
277 base=0x`${CROSS}nm "$ofile" | grep ' _start$' | cut -d' ' -f1`
278 entry=`${CROSS}objdump -f "$ofile" | grep '^start address ' | cut -d' ' -f3`
280 if [ -n "$binary" ]; then
281 mv "$ofile" "$ofile".elf
282 ${CROSS}objcopy -O binary "$ofile".elf "$ofile"
285 # post-processing needed for some platforms
288 $objbin/addnote "$ofile"
291 ${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile"
292 $objbin/hack-coff "$ofile"
296 mkimage -A ppc -O linux -T kernel -C gzip -a "$base" -e "$entry" \
297 $uboot_version -d "$ofile".gz "$ofile"
300 mv "$ofile" "$ofile.elf"
301 $objbin/mktree "$ofile.elf" "$ofile" "$base" "$entry"
302 if [ -z "$cacheit" ]; then
308 # The ps3's loader supports loading a gzipped binary image from flash
309 # rom to ram addr zero. The loader then enters the system reset
310 # vector at addr 0x100. A bootwrapper overlay is used to arrange for
311 # a binary image of the kernel to be at addr zero, and yet have a
312 # suitable bootwrapper entry at 0x100. To construct the final rom
313 # image 512 bytes from offset 0x100 is copied to the bootwrapper
314 # place holder at symbol __system_reset_kernel. The 512 bytes of the
315 # bootwrapper entry code at symbol __system_reset_overlay is then
316 # copied to offset 0x100. At runtime the bootwrapper program copies
317 # the data at __system_reset_kernel back to addr 0x100.
319 system_reset_overlay=0x`${CROSS}nm "$ofile" \
320 | grep ' __system_reset_overlay$' \
322 system_reset_overlay=`printf "%d" $system_reset_overlay`
323 system_reset_kernel=0x`${CROSS}nm "$ofile" \
324 | grep ' __system_reset_kernel$' \
326 system_reset_kernel=`printf "%d" $system_reset_kernel`
330 ${CROSS}objcopy -O binary "$ofile" "$ofile.bin"
332 dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \
333 skip=$overlay_dest seek=$system_reset_kernel \
334 count=$overlay_size bs=1
336 dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \
337 skip=$system_reset_overlay seek=$overlay_dest \
338 count=$overlay_size bs=1
340 odir="$(dirname "$ofile.bin")"
341 rm -f "$odir/otheros.bld"
342 gzip --force -9 --stdout "$ofile.bin" > "$odir/otheros.bld"