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#!/bin/sh
#
# Copyright (C) 2016 Chris Blake <chrisrblake93@gmail.com>
#
# Custom upgrade script for Meraki NAND devices (ex. MR24)
# Based on merakinand.sh from the ar71xx target
#
. /lib/apm821xx.sh
. /lib/functions.sh
merakinand_do_kernel_check() {
local board_name="$1"
local tar_file="$2"
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"')`
# What is our kernel magic string?
case "$board_name" in
"mr24")
[ "$image_magic_word" == "8e73ed8a" ] && {
echo "pass" && return 0
}
;;
esac
exit 1
}
merakinand_do_platform_check() {
local board_name="$1"
local tar_file="$2"
local control_length=`(tar xf $tar_file sysupgrade-$board_name/CONTROL -O | wc -c) 2> /dev/null`
local file_type="$(identify_tar $2 sysupgrade-$board_name/root)"
local kernel_magic="$(merakinand_do_kernel_check $1 $2)"
case "$board_name" in
"mr24")
[ "$control_length" = 0 -o "$file_type" != "squashfs" -o "$kernel_magic" != "pass" ] && {
echo "Invalid sysupgrade file for $board_name"
return 1
}
;;
*)
echo "Unsupported device $board_name";
return 1
;;
esac
return 0
}
merakinand_do_upgrade() {
local tar_file="$1"
local board_name="$(cat /tmp/sysinfo/board_name)"
# Do we need to do any platform tweaks?
case "$board_name" in
"mr24")
nand_do_upgrade $1
;;
*)
echo "Unsupported device $board_name";
exit 1
;;
esac
}
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