dtb=
dts=
cacheit=
+gzip=.gz
# cross-compilation prefix
CROSS=
usage() {
echo 'Usage: wrapper [-o output] [-p platform] [-i initrd]' >&2
echo ' [-d devtree] [-s tree.dts] [-c] [-C cross-prefix]' >&2
- echo ' [-D datadir] [-W workingdir] [vmlinux]' >&2
+ echo ' [-D datadir] [-W workingdir] [--no-gzip] [vmlinux]' >&2
exit 1
}
[ "$#" -gt 0 ] || usage
tmpdir="$1"
;;
+ --no-gzip)
+ gzip=
+ ;;
-?)
usage
;;
pmac|pseries|chrp)
platformo=$object/of.o
;;
-pmaccoff)
+coff)
platformo=$object/of.o
lds=$object/zImage.coff.lds
;;
ksection=image
isection=initrd
;;
+cuboot*)
+ gzip=
+ ;;
+ps3)
+ platformo="$object/ps3-head.o $object/ps3-hvcall.o $object/ps3.o"
+ lds=$object/zImage.ps3.lds
+ gzip=
+ ext=bin
+ objflags="-O binary --set-section-flags=.bss=contents,alloc,load,data"
+ ksection=.kernel:vmlinux.bin
+ isection=.kernel:initrd
+ ;;
esac
vmz="$tmpdir/`basename \"$kernel\"`.$ext"
-if [ -z "$cacheit" -o ! -f "$vmz.gz" -o "$vmz.gz" -ot "$kernel" ]; then
+if [ -z "$cacheit" -o ! -f "$vmz$gzip" -o "$vmz$gzip" -ot "$kernel" ]; then
${CROSS}objcopy $objflags "$kernel" "$vmz.$$"
- gzip -f -9 "$vmz.$$"
+
+ if [ -n "$gzip" ]; then
+ gzip -f -9 "$vmz.$$"
+ fi
+
if [ -n "$cacheit" ]; then
- mv -f "$vmz.$$.gz" "$vmz.gz"
+ mv -f "$vmz.$$$gzip" "$vmz$gzip"
else
vmz="$vmz.$$"
fi
fi
+vmz="$vmz$gzip"
+
+# Extract kernel version information, some platforms want to include
+# it in the image header
+version=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \
+ cut -d' ' -f3`
+if [ -n "$version" ]; then
+ uboot_version="-n Linux-$version"
+fi
+
case "$platform" in
uboot)
rm -f "$ofile"
- version=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \
- cut -d' ' -f3`
- if [ -n "$version" ]; then
- version="-n Linux-$version"
- fi
mkimage -A ppc -O linux -T kernel -C gzip -a 00000000 -e 00000000 \
- $version -d "$vmz.gz" "$ofile"
+ $uboot_version -d "$vmz" "$ofile"
if [ -z "$cacheit" ]; then
- rm -f $vmz.gz
+ rm -f "$vmz"
fi
exit 0
;;
--set-section-flags=$3=contents,alloc,load,readonly,data
}
-addsec $tmp "$vmz.gz" $ksection $object/empty.o
+addsec $tmp "$vmz" $ksection $object/empty.o
if [ -z "$cacheit" ]; then
- rm -f "$vmz.gz"
+ rm -f "$vmz"
fi
if [ -n "$initrd" ]; then
if [ "$platform" != "miboot" ]; then
${CROSS}ld -m elf32ppc -T $lds -o "$ofile" \
- $object/crt0.o $platformo $tmp $object/wrapper.a
+ $platformo $tmp $object/wrapper.a
rm $tmp
fi
+# Some platforms need the zImage's entry point and base address
+base=0x`${CROSS}nm "$ofile" | grep ' _start$' | cut -d' ' -f1`
+entry=`${CROSS}objdump -f "$ofile" | grep '^start address ' | cut -d' ' -f3`
+
# post-processing needed for some platforms
case "$platform" in
pseries|chrp)
$object/addnote "$ofile"
;;
-pmaccoff)
- ${CROSS}objcopy -O aixcoff-rs6000 --set-start 0x500000 "$ofile"
+coff)
+ ${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile"
$object/hack-coff "$ofile"
;;
+cuboot*)
+ mv "$ofile" "$ofile".elf
+ ${CROSS}objcopy -O binary "$ofile".elf "$ofile".bin
+ gzip -f -9 "$ofile".bin
+ mkimage -A ppc -O linux -T kernel -C gzip -a "$base" -e "$entry" \
+ $uboot_version -d "$ofile".bin.gz "$ofile"
+ ;;
+treeboot*)
+ mv "$ofile" "$ofile.elf"
+ $object/mktree "$ofile.elf" "$ofile" "$base" "$entry"
+ if [ -z "$cacheit" ]; then
+ rm -f "$ofile.elf"
+ fi
+ exit 0
+ ;;
+ps3)
+ # The ps3's loader supports loading gzipped binary images from flash
+ # rom to addr zero. The loader enters the image at addr 0x100. A
+ # bootwrapper overlay is use to arrange for the kernel to be loaded
+ # to addr zero and to have a suitable bootwrapper entry at 0x100.
+ # To construct the rom image, 0x100 bytes from offset 0x100 in the
+ # kernel is copied to the bootwrapper symbol __system_reset_kernel.
+ # The 0x100 bytes at the bootwrapper symbol __system_reset_overlay is
+ # then copied to offset 0x100. At runtime the bootwrapper program
+ # copies the 0x100 bytes at __system_reset_kernel to addr 0x100.
+
+ system_reset_overlay=0x`${CROSS}nm "$ofile" \
+ | grep ' __system_reset_overlay$' \
+ | cut -d' ' -f1`
+ system_reset_overlay=`printf "%d" $system_reset_overlay`
+ system_reset_kernel=0x`${CROSS}nm "$ofile" \
+ | grep ' __system_reset_kernel$' \
+ | cut -d' ' -f1`
+ system_reset_kernel=`printf "%d" $system_reset_kernel`
+ overlay_dest="256"
+ overlay_size="256"
+
+ rm -f "$object/otheros.bld"
+
+ ${CROSS}objcopy -O binary "$ofile" "$ofile.bin"
+
+ msg=$(dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \
+ skip=$overlay_dest seek=$system_reset_kernel \
+ count=$overlay_size bs=1 2>&1)
+
+ if [ $? -ne "0" ]; then
+ echo $msg
+ exit 1
+ fi
+
+ msg=$(dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \
+ skip=$system_reset_overlay seek=$overlay_dest \
+ count=$overlay_size bs=1 2>&1)
+
+ if [ $? -ne "0" ]; then
+ echo $msg
+ exit 2
+ fi
+
+ gzip --force -9 --stdout "$ofile.bin" > "$object/otheros.bld"
+ ;;
esac