package/system/procd/files/nand-preinit.sh

   1 #!/bin/sh
   2 # Copyright (C) 2014 OpenWrt.org
   3
   4 nand_takeover() {
   5         . /lib/upgrade/nand.sh
   6         mtd=$(find_mtd_index "$CI_UBIPART")
   7         esize=$(cat /proc/mtd | grep mtd$mtd |cut -d" " -f 3)
   8         [ -z "$esize" ] && return 1
   9         esize=$(printf "%d" 0x$esize)
  10         for a in `seq 0 64`; do
  11                 mtd -o $((a * esize)) -l 400 dump /dev/mtd$mtd > /tmp/takeover.hdr
  12                 MAGIC=$(dd if=/tmp/takeover.hdr bs=1 skip=261 count=5 2> /dev/null)
  13                 SIZE=$(printf "%d" 0x$(dd if=/tmp/takeover.hdr bs=4 count=1 2> /dev/null | hexdump -v -n 4 -e '1/1 "%02x"'))
  14                 [ "$MAGIC" = "ustar" ] && {
  15                         mtd -o $((a * esize)) -l $((SIZE + 4)) dump /dev/mtd$mtd | dd bs=1 skip=4 of=/tmp/sysupgrade.tar
  16                         nand_do_upgrade_stage2 /tmp/sysupgrade.tar
  17                 }
  18         done
  19 }
  20
  21 boot_hook_add initramfs nand_takeover