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#!/bin/sh
is_dirty() {
grep Broadcom /proc/cpuinfo >&- || return 1
OFFSET="$(($(hexdump -v /dev/mtdblock/1 -s 20 -n 2 -e '"%d"')-1))"
return $(hexdump -v /dev/mtdblock/1 -s $OFFSET -n 1 -e '"%d"')
}
size=$(awk '/Mem:/ {l=5242880;print((s=$2/2)<l)?$2-l:s}' /proc/meminfo)
mount none /tmp -t tmpfs -o size=$size
if [ "$1" != "failsafe" ]; then
mtd unlock linux
mount | grep jffs2 >&-
if [ $? = 0 ] ; then
if [ $(cat /proc/mtd | wc -l) = 6 ]; then
mtd erase OpenWrt
jffs2root --move
else
mount -o remount,rw /dev/root /
fi
else
. /bin/firstboot
is_dirty
[ $? != 0 ] && {
echo "switching to jffs2"
mount /dev/mtdblock/4 /jffs -t jffs2
pivot /jffs /rom
} || {
echo "jffs2 unusable; using ramdisk"
ramoverlay
}
fi
fi
mount none /tmp -t tmpfs -o remount,nosuid,nodev,mode=1777
mkdir -p /dev/pts
mount none /dev/pts -t devpts
mount -t sysfs none /sys 2>&-
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