3 # Copyright (C) 2015 Chris Blake <chrisrblake93@gmail.com>
5 # Custom upgrade script for Meraki NAND devices (ex. MR18)
6 # Based on dir825.sh and stock nand functions
14 dd bs
=1 count
=2 skip
=$pos if=$mtddev 2>/dev
/null |
hexdump -v -n 4 -e '1/1 "%02x"'
17 mr18_is_caldata_valid
() {
21 magic
=$
(get_magic_at
$mtddev 4096)
22 [ "$magic" != "0202" ] && return 0
24 magic
=$
(get_magic_at
$mtddev 20480)
25 [ "$magic" != "0202" ] && return 0
27 magic
=$
(get_magic_at
$mtddev 36864)
28 [ "$magic" != "0202" ] && return 0
33 merakinand_copy_caldata
() {
36 local ubidev
=$
( nand_find_ubi
$CI_UBIPART )
37 local board_name
="$(cat /tmp/sysinfo/board_name)"
38 local rootfs_size
="$(ubinfo /dev/ubi0 -N rootfs_data | grep "Size
" | awk '{ print $6 }')"
40 # Setup partitions using board name, in case of future platforms
44 mtd_src
=$
(find_mtd_chardev
$cal_src)
45 [ -n "$mtd_src" ] ||
{
46 echo "no mtd device found for partition $cal_src"
51 # TODO: possibly add create (hard to do when rootfs_data is expanded & mounted)
52 # Would need to be done from ramdisk
53 mtd_dst
="$(nand_find_volume $ubidev $cal_dst)"
54 [ -n "$mtd_dst" ] ||
{
55 echo "no ubi device found for partition $cal_dst"
59 mr18_is_caldata_valid
"$mtd_src" && {
60 echo "no valid calibration data found in $cal_src"
64 mr18_is_caldata_valid
"/dev/$mtd_dst" && {
65 echo "Copying calibration data from $cal_src to $cal_dst..."
66 dd if="$mtd_src" of
=/tmp
/caldata.tmp
2>/dev
/null
67 ubiupdatevol
"/dev/$mtd_dst" /tmp
/caldata.tmp
74 echo "Unsupported device $board_name";
80 merakinand_do_kernel_check
() {
83 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"')`
85 # What is our kernel magic string?
88 [ "$image_magic_word" == "8e73ed8a" ] && {
89 echo "pass" && return 0
97 merakinand_do_platform_check
() {
100 local control_length
=`(tar xf $tar_file sysupgrade-$board_name/CONTROL -O | wc -c) 2> /dev/null`
101 local file_type
="$(identify_tar $2 sysupgrade-$board_name/root)"
102 local kernel_magic
="$(merakinand_do_kernel_check $1 $2)"
104 case "$board_name" in
106 [ "$control_length" = 0 -o "$file_type" != "squashfs" -o "$kernel_magic" != "pass" ] && {
107 echo "Invalid sysupgrade file for $board_name"
112 echo "Unsupported device $board_name";
120 merakinand_do_upgrade
() {
122 local board_name
="$(cat /tmp/sysinfo/board_name)"
124 # Do we need to do any platform tweaks?
125 case "$board_name" in
127 # Check and create UBI caldata if it's invalid
128 merakinand_copy_caldata
"odm-caldata" "caldata"
132 echo "Unsupported device $board_name";