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#!/bin/sh
. /etc/functions.sh
copy_kernel() {
local input="$1"
local output="$2"
local cmdline="$3"
size="$(echo -n "$cmdline" | wc -c)"
dd if="$input" bs=3M count=1 | (
dd bs=4112 count=1
echo -n "$cmdline"
dd if=/dev/zero bs="$((512 - $size))" count=1
dd bs=512 count=1 of=/dev/null
cat
) > "$output"
}
fstype="$(mount | grep ' / ' | awk '{print $5}')"
[ -d /tmp/cf2nand ] && {
echo "/tmp/cf2nand already exists"
exit 1
}
mkdir /tmp/cf2nand
mkdir /tmp/cf2nand/rootfs
mount -t "$fstype" /dev/root /tmp/cf2nand/rootfs || {
echo "Mounting rootfs failed."
exit 1
}
boot="$(find_mtd_part 'RouterBoard NAND Boot')"
main="$(find_mtd_part 'RouterBoard NAND Main')"
[ -z "$boot" -o -z "$main" ] && {
echo "Cannot find NAND Flash partitions"
exit 1
}
echo "Erasing filesystem..."
mtd erase Boot 2>/dev/null >/dev/null
mtd erase Main 2>/dev/null >/dev/null
mkdir /tmp/cf2nand/p1
mkdir /tmp/cf2nand/p2
mount -t yaffs2 "$boot" /tmp/cf2nand/p1
mount -t yaffs2 "$main" /tmp/cf2nand/p2
echo "Copying kernel..."
copy_kernel /dev/cf/card0/part1 /tmp/cf2nand/p1/kernel "root=/dev/mtdblock1 rootfstype=yaffs2 " 2>/dev/null >/dev/null
umount /tmp/cf2nand/p1
rmdir /tmp/cf2nand/p1
echo "Copying filesystem..."
( cd /tmp/cf2nand/rootfs; tar c . ) | ( cd /tmp/cf2nand/p2; tar x )
sync
umount /tmp/cf2nand/p2
rmdir /tmp/cf2nand/p2
umount /tmp/cf2nand/rootfs
rmdir /tmp/cf2nand/rootfs
rmdir /tmp/cf2nand
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