ar71xx: add support for Samsung WAM250

Samsung WAM250 is a dual-band (selectable, not simultaneous) wireless
hub, dedicated for Samsung Shape Wireless Audio System. The device is
based on Atheros AR9344. FCC ID: A3LWAM250.

Specification:

- 560/450/225 MHz (CPU/DDR/AHB)
- 64 MB of RAM (DDR2)
- 16 MB of FLASH (SPI NOR)
- 2x 10/100 Mbps Ethernet
- 2T2R 2.4/5 GHz (AR9344), with ext. PA (SE2598L, SE5003L) and LNA
- 1x USB 2.0
- 4x LED (all are driven by GPIO)
- 2x button (reset, wps/speaker add)
- DC jack for main power input (14 V)
- UART header on PCB (J4, RX: 3, TX: 5)

Flash instruction:

This device uses dual-image (switched between upgrades) with a common
jffs2 config partition. Fortunately, there is a way to disable this mode
so that more flash space can be used by OpenWrt image.

You can easily access this device over telnet, using root/root
credentials (the same also work for serial console access).

1. Make sure that your device uses second (bootpart=2) image using
   command: "fw_printenv bootpart".
2. If your device uses first image (bootpart=1), perform upgrade to the
   latest vendor firmware (after the update, device should boot from
   second partition) using web gui (default login: admin/1234567890).
3. Rename "sysupgrade" image to "firmware.bin", download it (you can use
   wget, tftp or ftpget) to "/tmp" and issue below commands:

   mtd_debug erase /dev/mtd3 0 $(wc -c /tmp/firmware.bin | awk -F' ' '{print $1}')
   mtd_debug write /dev/mtd3 0 $(wc -c /tmp/firmware.bin)
   fw_setenv bootpart
   fw_setenv bootcmd "bootm 0x9f070000"
   reboot

Revert to vendor firmware instruction:

1. Download vendor firmware to "/tmp" device and issue below commands:

   fw_setenv bootpart 1
   sysupgrade -n -F SS_BHUB_v2.2.05.bin

Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>

4 files changed, 10 insertions, 1 deletions

diff --git a/target/linux/ar71xx/base-files/etc/board.d/01_leds b/target/linux/ar71xx/base-files/etc/board.d/01_leds
index 2d0bf2cffa..24c71f2a3c 100755
--- a/target/linux/ar71xx/base-files/etc/board.d/01_leds
+++ b/target/linux/ar71xx/base-files/etc/board.d/01_leds
@@ -910,6 +910,10 @@ tube2h)
 	ucidef_set_led_rssi "signal3" "SIGNAL3" "alfa:green:signal3" "wlan0" "51" "100" "-50" "13"
 	ucidef_set_led_rssi "signal4" "SIGNAL4" "alfa:green:signal4" "wlan0" "76" "100" "-75" "13"
 	;;
+wam250)
+	ucidef_set_led_netdev "lan" "LAN" "$board:white:lan" "eth0"
+	ucidef_set_led_wlan "wlan" "WLAN" "$board:white:wlan" "phy0tpt"
+	;;
 wndap360)
 	ucidef_set_led_power "power" "POWER GREEN" "netgear:green:power" "1"
 	;;
diff --git a/target/linux/ar71xx/base-files/etc/diag.sh b/target/linux/ar71xx/base-files/etc/diag.sh
index bec14d4439..f7f622d92b 100644
--- a/target/linux/ar71xx/base-files/etc/diag.sh
+++ b/target/linux/ar71xx/base-files/etc/diag.sh
@@ -236,7 +236,8 @@ get_status_led() {
 		;;
 	gl-ar750|\
 	hiveap-121|\
-	nbg6716)
+	nbg6716|\
+	wam250)
 		status_led="$board:white:power"
 		;;
 	hiwifi-hc6361)
diff --git a/target/linux/ar71xx/base-files/lib/ar71xx.sh b/target/linux/ar71xx/base-files/lib/ar71xx.sh
index fc578cec65..034a3a435b 100755
--- a/target/linux/ar71xx/base-files/lib/ar71xx.sh
+++ b/target/linux/ar71xx/base-files/lib/ar71xx.sh
@@ -1298,6 +1298,9 @@ ar71xx_board_detect() {
 	*"UniFiAP Outdoor+")
 		name="unifi-outdoor-plus"
 		;;
+	*"WAM250")
+		name="wam250"
+		;;
 	*"WBS210")
 		name="wbs210"
 		tplink_pharos_board_detect
diff --git a/target/linux/ar71xx/base-files/lib/upgrade/platform.sh b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
index b080955359..2904535372 100755
--- a/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
@@ -286,6 +286,7 @@ platform_check_image() {
 	unifi-outdoor|\
 	unifiac-lite|\
 	unifiac-pro|\
+	wam250|\
 	weio|\
 	whr-g301n|\
 	whr-hp-g300n|\