From 68d649f5cd9ee2f6fda00df7bde4b9074474becf Mon Sep 17 00:00:00 2001
From: Chris Blake <chrisrblake93@gmail.com>
Date: Tue, 20 Sep 2016 07:14:29 -0500
Subject: ar71xx: add support for Cisco Meraki Z1 Cloud Managed Teleworker
 Gateway

This patch adds support for Cisco's Z1.
Detailed instructions for the flashing the device can
be found in the OpenWrt wiki:
<https://wiki.openwrt.org/toh/meraki/z1>

Signed-off-by: Chris Blake <chrisrblake93@gmail.com>
---
 .../ar71xx/base-files/lib/upgrade/merakinand.sh    | 61 ++++++++++++++++------
 1 file changed, 45 insertions(+), 16 deletions(-)

(limited to 'target/linux/ar71xx/base-files/lib/upgrade/merakinand.sh')

diff --git a/target/linux/ar71xx/base-files/lib/upgrade/merakinand.sh b/target/linux/ar71xx/base-files/lib/upgrade/merakinand.sh
index cc7a86c93d..78cde20a13 100644
--- a/target/linux/ar71xx/base-files/lib/upgrade/merakinand.sh
+++ b/target/linux/ar71xx/base-files/lib/upgrade/merakinand.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Copyright (C) 2015 Chris Blake <chrisrblake93@gmail.com>
+# Copyright (C) 2015-2016 Chris Blake <chrisrblake93@gmail.com>
 #
 # Custom upgrade script for Meraki NAND devices (ex. MR18)
 # Based on dir825.sh and stock nand functions
@@ -14,34 +14,52 @@ get_magic_at() {
 	dd bs=1 count=2 skip=$pos if=$mtddev 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"'
 }
 
-mr18_is_caldata_valid() {
-	local mtddev=$1
+meraki_is_caldata_valid() {
+	local board=$1
+	local mtddev=$2
 	local magic
 
-	magic=$(get_magic_at $mtddev 4096)
-	[ "$magic" != "0202" ] && return 0
+	case "$board" in
+	"mr18")
+		magic=$(get_magic_at $mtddev 4096)
+		[ "$magic" != "0202" ] && return 0
+
+		magic=$(get_magic_at $mtddev 20480)
+		[ "$magic" != "0202" ] && return 0
 
-	magic=$(get_magic_at $mtddev 20480)
-	[ "$magic" != "0202" ] && return 0
+		magic=$(get_magic_at $mtddev 36864)
+		[ "$magic" != "0202" ] && return 0
+
+		return 1
+		;;
+	"z1")
+		magic=$(get_magic_at $mtddev 4096)
+		[ "$magic" != "0202" ] && return 0
 
-	magic=$(get_magic_at $mtddev 36864)
-	[ "$magic" != "0202" ] && return 0
+		magic=$(get_magic_at $mtddev 86016)
+		[ "$magic" != "a55a" ] && return 0
 
-	return 1
+		return 1
+		;;
+	*)
+		return 1
+		;;
+	esac
 }
 
 merakinand_copy_caldata() {
 	local cal_src=$1
 	local cal_dst=$2
-	local ubidev=$( nand_find_ubi $CI_UBIPART )
+	local ubidev="$(nand_find_ubi $CI_UBIPART)"
 	local board_name="$(cat /tmp/sysinfo/board_name)"
 	local rootfs_size="$(ubinfo /dev/ubi0 -N rootfs_data | grep "Size" | awk '{ print $6 }')"
 
 	# Setup partitions using board name, in case of future platforms
 	case "$board_name" in
-	"mr18")
+	"mr18"|\
+	"z1")
 		# Src is MTD
-		mtd_src=$(find_mtd_chardev $cal_src)
+		mtd_src="$(find_mtd_chardev $cal_src)"
 		[ -n "$mtd_src" ] || {
 			echo "no mtd device found for partition $cal_src"
 			exit 1
@@ -56,12 +74,12 @@ merakinand_copy_caldata() {
 			exit 1
 		}
 
-		mr18_is_caldata_valid "$mtd_src" && {
+		meraki_is_caldata_valid "$board_name" "$mtd_src" && {
 			echo "no valid calibration data found in $cal_src"
 			exit 1
 		}
 
-		mr18_is_caldata_valid "/dev/$mtd_dst" && {
+		meraki_is_caldata_valid "$board_name" "/dev/$mtd_dst" && {
 			echo "Copying calibration data from $cal_src to $cal_dst..."
 			dd if="$mtd_src" of=/tmp/caldata.tmp 2>/dev/null
 			ubiupdatevol "/dev/$mtd_dst" /tmp/caldata.tmp
@@ -89,6 +107,11 @@ merakinand_do_kernel_check() {
 			echo "pass" && return 0
 		}
 		;;
+	"z1")
+		[ "$image_magic_word" == "4d495053" ] && {
+			echo "pass" && return 0
+		}
+		;;
 	esac
 
 	exit 1
@@ -102,7 +125,8 @@ merakinand_do_platform_check() {
 	local kernel_magic="$(merakinand_do_kernel_check $1 $2)"
 
 	case "$board_name" in
-	"mr18")
+	"mr18"|\
+	"z1")
 		[ "$control_length" = 0 -o "$file_type" != "squashfs" -o "$kernel_magic" != "pass" ] && {
 			echo "Invalid sysupgrade file for $board_name"
 			return 1
@@ -128,6 +152,11 @@ merakinand_do_upgrade() {
 		merakinand_copy_caldata "odm-caldata" "caldata"
 		nand_do_upgrade $1
 		;;
+	"z1")
+		# Check and create UBI caldata if it's invalid
+		merakinand_copy_caldata "origcaldata" "caldata"
+		nand_do_upgrade $1
+		;;
 	*)
 		echo "Unsupported device $board_name";
 		exit 1
-- 
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