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openwrt-xburst/target/linux/adm8668/image/my-mkimage
florian 9406119753 [adm8668] fix firstboot with new MTD map driver
my-mkimage previously did not include the fs_mark of deadc0de because
upon formatting of jffs2 partition, U-Boot's CRC validation would not
allow the image to boot. This new MTD map will shrink the
kernel+rootfs+fs_mark image and recalculate the CRC, so that only the
kernel is part of the image validation. This also improves boot time,
since less is copied from FLASH->RAM. This is mostly from brcm47xx,
just with u-boot image vs TRX partitions.

Signed-off-by: Scott Nicholas <scott.nicholas@scottn.us>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@25176 3c298f89-4303-0410-b956-a3cf2f4a3e73
2011-01-27 21:50:00 +00:00

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#!/bin/sh
# my-mkimage
# This will pad given files to 64k boundaries to make a single u-boot image.
# we have to be fancy because u-boot mkimage is going to add 64 byte header, ...
# and i only know basic arithmetic.. ;)
#
# Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us>
[ $# -lt 2 ] && {
echo usage: $0 loader.bin [rootfs.squashfs [fs_mark [...]]] output.bin
}
OLDSIZE=$(stat -c%s $1)
NEWSIZE=$(((OLDSIZE / 65536 + 1) * 65536 - 64))
dd if=$1 of=vmlinuz.tmp bs=$NEWSIZE conv=sync >/dev/null 2>&1
shift
appends=$(($# - 1))
echo
while [ $appends -gt 0 ]; do
dd if=$1 of=temp bs=64k conv=sync >/dev/null 2>&1
printf "### '%s' starts at 0x%x\n" "`basename $1`" "$((NEWSIZE+64))"
cat temp >>vmlinuz.tmp
shift
appends=$((appends-1))
NEWSIZE=$(stat -c%s vmlinuz.tmp)
done
echo
../../../../staging_dir/host/bin/mkimage -A mips -O linux -T kernel \
-C none -a 0x80400000 -e 0x80400000 -n "ADM8668 Linux Kernel(2.4.31)" \
-d vmlinuz.tmp $1
rm temp vmlinuz.tmp