openwrt/target/default/target_skeleton/etc/preinit

   1 #!/bin/sh
   2 mount none /proc -t proc
   3 insmod diag
   4 echo 0x01 > /proc/sys/diag
   5 sleep 1
   6 if [ $(cat /proc/sys/reset) = 1 ] ; then
   7   export FAILSAFE=true
   8   while :; do { echo $(((X=(X+1)%8)%2)) > /proc/sys/diag; sleep $((X==0)); } done &
   9 else
  10   mount | grep jffs2 >&-
  11   if [ $? = 0 ] ; then
  12     mtd unlock rootfs
  13     [ $(cat /proc/mtd | wc -l) = 6 ] && {
  14       echo 5 > /proc/sys/diag
  15       mtd unlock OpenWrt
  16       mtd erase OpenWrt
  17       jffs2root --move
  18     }
  19     mount -o remount,rw /dev/root /
  20   else
  21     mtd unlock mtd4
  22     mount -t jffs2 /dev/mtdblock/4 /jffs
  23     pivot_root /jffs /jffs/rom
  24     mount none /dev -t devfs
  25     mount none /proc -t proc
  26     umount rom/proc rom/dev
  27   fi
  28 fi
  29 mount none /tmp -t ramfs
  30 exec /sbin/init