package/base-files/rb532/sbin/cf2nand

   1 #!/bin/sh
   2 . /etc/functions.sh
   3
   4 copy_kernel() {
   5         local input="$1"
   6         local output="$2"
   7         local cmdline="$3"
   8         size="$(echo -n "$cmdline" | wc -c)"
   9         dd if="$input" bs=3M count=1 | (
  10                 dd bs=4112 count=1
  11                 echo -n "$cmdline"
  12                 dd if=/dev/zero bs="$((512 - $size))" count=1
  13                 dd bs=512 count=1 of=/dev/null
  14                 cat
  15         ) > "$output"
  16 }
  17
  18 fstype="$(mount | grep ' / ' | awk '{print $5}')"
  19 case "$fstype" in
  20         ext2|jffs2) echo "Copying from $fstype to yaffs2";;
  21         *) echo "Invalid filesystem."; exit 1;;
  22 esac
  23
  24 [ -d /tmp/cf2nand ] && {
  25         echo "/tmp/cf2nand already exists"
  26         exit 1
  27 }
  28
  29 mkdir /tmp/cf2nand
  30 mkdir /tmp/cf2nand/rootfs
  31 mount -t "$fstype" /dev/root /tmp/cf2nand/rootfs || {
  32         echo "Mounting rootfs failed."
  33         exit 1
  34 }
  35
  36 boot="$(find_mtd_part 'RouterBoard NAND Boot')"
  37 main="$(find_mtd_part 'RouterBoard NAND Main')"
  38 [ -z "$boot" -o -z "$main" ] && {
  39         echo "Cannot find NAND Flash partitions"
  40         exit 1
  41 }
  42
  43 echo "Erasing filesystem..."
  44 mtd erase Boot 2>/dev/null >/dev/null
  45 mtd erase Main 2>/dev/null >/dev/null
  46
  47 mkdir /tmp/cf2nand/p1
  48 mkdir /tmp/cf2nand/p2
  49 mount -t yaffs2 "$boot" /tmp/cf2nand/p1
  50 mount -t yaffs2 "$main" /tmp/cf2nand/p2
  51
  52 echo "Copying kernel..."
  53 copy_kernel /dev/cf/card0/part1 /tmp/cf2nand/p1/kernel "root=/dev/mtdblock1 rootfstype=yaffs2 " 2>/dev/null >/dev/null
  54 umount /tmp/cf2nand/p1
  55 rmdir /tmp/cf2nand/p1
  56
  57 echo "Copying filesystem..."
  58 ( cd /tmp/cf2nand/rootfs; tar c . ) | ( cd /tmp/cf2nand/p2; tar x )
  59 sync
  60 umount /tmp/cf2nand/p2
  61 rmdir /tmp/cf2nand/p2
  62
  63 umount /tmp/cf2nand/rootfs
  64 rmdir /tmp/cf2nand/rootfs
  65 rmdir /tmp/cf2nand
  66