target/linux/apm821xx/base-files/lib/upgrade/merakinand.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (C) 2016 Chris Blake <chrisrblake93@gmail.com>
   4 #
   5 # Custom upgrade script for Meraki NAND devices (ex. MR24)
   6 # Based on merakinand.sh from the ar71xx target
   7 #
   8 . /lib/apm821xx.sh
   9 . /lib/functions.sh
  10
  11 merakinand_do_kernel_check() {
  12         local board_name="$1"
  13         local tar_file="$2"
  14         local image_magic_word=`(tar xf $tar_file sysupgrade-$board_name/kernel -O 2>/dev/null | dd bs=1 count=4 skip=0 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"')`
  15
  16         # What is our kernel magic string?
  17         case "$board_name" in
  18         "mr24")
  19                 [ "$image_magic_word" == "8e73ed8a" ] && {
  20                         echo "pass" && return 0
  21                 }
  22                 ;;
  23         esac
  24
  25         exit 1
  26 }
  27
  28 merakinand_do_platform_check() {
  29         local board_name="$1"
  30         local tar_file="$2"
  31         local control_length=`(tar xf $tar_file sysupgrade-$board_name/CONTROL -O | wc -c) 2> /dev/null`
  32         local file_type="$(identify_tar $2 sysupgrade-$board_name/root)"
  33         local kernel_magic="$(merakinand_do_kernel_check $1 $2)"
  34
  35         case "$board_name" in
  36         "mr24")
  37                 [ "$control_length" = 0 -o "$file_type" != "squashfs" -o "$kernel_magic" != "pass" ] && {
  38                         echo "Invalid sysupgrade file for $board_name"
  39                         return 1
  40                 }
  41                 ;;
  42         *)
  43                 echo "Unsupported device $board_name";
  44                 return 1
  45                 ;;
  46         esac
  47
  48         return 0
  49 }
  50
  51 merakinand_do_upgrade() {
  52         local tar_file="$1"
  53         local board_name="$(cat /tmp/sysinfo/board_name)"
  54
  55         # Do we need to do any platform tweaks?
  56         case "$board_name" in
  57         "mr24")
  58                 nand_do_upgrade $1
  59                 ;;
  60         *)
  61                 echo "Unsupported device $board_name";
  62                 exit 1
  63                 ;;
  64         esac
  65 }