From a57d6e2d47688cfa392d6ea7f36ae6f9d84affc5 Mon Sep 17 00:00:00 2001
From: Chris Blake <chrisrblake93@gmail.com>
Date: Wed, 20 Jul 2016 15:44:51 +0200
Subject: apm821xx: add support for the Cisco Meraki MR24

This patch adds support for the Cisco Meraki MR24 Access point
to the apm821xx target.

Board:		MR24 - Meraki MR24 Cloud Managed Access Point
CPU:		APM82181 SoC 800 MHz (PLB=200 OPB=100 EBC=100)
Flash size:	32MiB
RAM Size:	128MiB
Wireless:	Atheros AR9380 5.0GHz + Atheros AR9380 2.4GHz
Ethernet ports:	1x Gigabit Atheros AR8035

WARNING: The serial port needs a TTL/RS-232 v3.3 level converter!

For flashing instructions, visit:
<https://github.com/riptidewave93/Openwrt-MR24/blob/master/README.md#flashing>

Signed-off-by: Chris Blake <chrisrblake93@gmail.com>
---
 target/linux/apm821xx/base-files/lib/apm821xx.sh   |  4 ++
 .../lib/preinit/05_set_iface_mac_apm821xx          | 14 +++++
 .../apm821xx/base-files/lib/upgrade/merakinand.sh  | 65 ++++++++++++++++++++++
 .../apm821xx/base-files/lib/upgrade/platform.sh    |  9 +++
 4 files changed, 92 insertions(+)
 create mode 100644 target/linux/apm821xx/base-files/lib/preinit/05_set_iface_mac_apm821xx
 create mode 100755 target/linux/apm821xx/base-files/lib/upgrade/merakinand.sh

(limited to 'target/linux/apm821xx/base-files/lib')

diff --git a/target/linux/apm821xx/base-files/lib/apm821xx.sh b/target/linux/apm821xx/base-files/lib/apm821xx.sh
index 8f15ced8ca..82f85c56be 100755
--- a/target/linux/apm821xx/base-files/lib/apm821xx.sh
+++ b/target/linux/apm821xx/base-files/lib/apm821xx.sh
@@ -10,6 +10,10 @@ apm821xx_board_detect() {
 	model=$(awk 'BEGIN{FS="[ \t]+:[ \t]"} /model/ {print $2}' /proc/cpuinfo)
 
 	case "$model" in
+	*"Meraki MR24 Access Point")
+		name="mr24"
+		;;
+
 	*)
 		name="unknown"
 		;;
diff --git a/target/linux/apm821xx/base-files/lib/preinit/05_set_iface_mac_apm821xx b/target/linux/apm821xx/base-files/lib/preinit/05_set_iface_mac_apm821xx
new file mode 100644
index 0000000000..5dc7175730
--- /dev/null
+++ b/target/linux/apm821xx/base-files/lib/preinit/05_set_iface_mac_apm821xx
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+. /lib/apm821xx.sh
+
+preinit_set_mac_address() {
+	case $(apm821xx_board_name) in
+		mr24)
+			mac_lan=$(mtd_get_mac_binary_ubi board-config 102)
+			[ -n "$mac_lan" ] && ifconfig eth0 hw ether "$mac_lan"
+			;;
+	esac
+}
+
+boot_hook_add preinit_main preinit_set_mac_address
diff --git a/target/linux/apm821xx/base-files/lib/upgrade/merakinand.sh b/target/linux/apm821xx/base-files/lib/upgrade/merakinand.sh
new file mode 100755
index 0000000000..5861d97f12
--- /dev/null
+++ b/target/linux/apm821xx/base-files/lib/upgrade/merakinand.sh
@@ -0,0 +1,65 @@
+#!/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 $board_name";
+		exit 1
+		;;
+	esac
+}
diff --git a/target/linux/apm821xx/base-files/lib/upgrade/platform.sh b/target/linux/apm821xx/base-files/lib/upgrade/platform.sh
index 2406113bad..ddf775f4ae 100755
--- a/target/linux/apm821xx/base-files/lib/upgrade/platform.sh
+++ b/target/linux/apm821xx/base-files/lib/upgrade/platform.sh
@@ -11,6 +11,11 @@ platform_check_image() {
 	[ "$#" -gt 1 ] && return 1
 
 	case "$board" in
+	mr24)
+		merakinand_do_platform_check $board "$1"
+		return $?;
+		;;
+
 	*)
 		;;
 	esac
@@ -23,6 +28,10 @@ platform_pre_upgrade() {
 	local board=$(apm821xx_board_name)
 
 	case "$board" in
+	mr24)
+		merakinand_do_upgrade "$1"
+		;;
+
 	*)
 		;;
 	esac
-- 
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