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136 lines
3.1 KiB
136 lines
3.1 KiB
#!/bin/sh
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#
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# Copyright (C) 2015 Chris Blake <chrisrblake93@gmail.com>
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#
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# Custom upgrade script for Meraki NAND devices (ex. MR18)
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# Based on dir825.sh and stock nand functions
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#
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. /lib/ar71xx.sh
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. /lib/functions.sh
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get_magic_at() {
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local mtddev=$1
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local pos=$2
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dd bs=1 count=2 skip=$pos if=$mtddev 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"'
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}
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mr18_is_caldata_valid() {
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local mtddev=$1
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local magic
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magic=$(get_magic_at $mtddev 4096)
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[ "$magic" != "0202" ] && return 0
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magic=$(get_magic_at $mtddev 20480)
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[ "$magic" != "0202" ] && return 0
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magic=$(get_magic_at $mtddev 36864)
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[ "$magic" != "0202" ] && return 0
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return 1
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}
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merakinand_copy_caldata() {
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local cal_src=$1
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local cal_dst=$2
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local ubidev=$( nand_find_ubi $CI_UBIPART )
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local board_name="$(cat /tmp/sysinfo/board_name)"
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local rootfs_size="$(ubinfo /dev/ubi0 -N rootfs_data | grep "Size" | awk '{ print $6 }')"
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# Setup partitions using board name, in case of future platforms
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case "$board_name" in
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"mr18")
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# Src is MTD
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mtd_src=$(find_mtd_chardev $cal_src)
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[ -n "$mtd_src" ] || {
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echo "no mtd device found for partition $cal_src"
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exit 1
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}
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# Dest is UBI
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# TODO: possibly add create (hard to do when rootfs_data is expanded & mounted)
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# Would need to be done from ramdisk
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mtd_dst="$(nand_find_volume $ubidev $cal_dst)"
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[ -n "$mtd_dst" ] || {
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echo "no ubi device found for partition $cal_dst"
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exit 1
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}
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mr18_is_caldata_valid "$mtd_src" && {
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echo "no valid calibration data found in $cal_src"
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exit 1
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}
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mr18_is_caldata_valid "/dev/$mtd_dst" && {
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echo "Copying calibration data from $cal_src to $cal_dst..."
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dd if="$mtd_src" of=/tmp/caldata.tmp 2>/dev/null
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ubiupdatevol "/dev/$mtd_dst" /tmp/caldata.tmp
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rm /tmp/caldata.tmp
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sync
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}
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return 0
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;;
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*)
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echo "Unsupported device $board_name";
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return 1
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;;
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esac
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}
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merakinand_do_kernel_check() {
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local board_name="$1"
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local tar_file="$2"
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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"')`
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# What is our kernel magic string?
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case "$board_name" in
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"mr18")
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[ "$image_magic_word" == "8e73ed8a" ] && {
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echo "pass" && return 0
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}
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;;
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esac
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exit 1
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}
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merakinand_do_platform_check() {
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local board_name="$1"
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local tar_file="$2"
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local control_length=`(tar xf $tar_file sysupgrade-$board_name/CONTROL -O | wc -c) 2> /dev/null`
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local file_type="$(identify_tar $2 sysupgrade-$board_name/root)"
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local kernel_magic="$(merakinand_do_kernel_check $1 $2)"
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case "$board_name" in
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"mr18")
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[ "$control_length" = 0 -o "$file_type" != "squashfs" -o "$kernel_magic" != "pass" ] && {
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echo "Invalid sysupgrade file for $board_name"
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return 1
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}
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;;
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*)
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echo "Unsupported device $board_name";
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return 1
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;;
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esac
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return 0
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}
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merakinand_do_upgrade() {
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local tar_file="$1"
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local board_name="$(cat /tmp/sysinfo/board_name)"
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# Do we need to do any platform tweaks?
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case "$board_name" in
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"mr18")
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# Check and create UBI caldata if it's invalid
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merakinand_copy_caldata "odm-caldata" "caldata"
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nand_do_upgrade $1
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;;
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*)
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echo "Unsupported device $board_name";
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exit 1
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;;
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esac
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}
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