[PATCH v2] bcm53xx: add support for Asus RT-AC88U

[Arınç ÜNAL]

Asus RT-AC88U is an AC3100 router featuring 9 Ethernet ports over the
integrated Broadcom and the external Realtek switch.

Hardware info:
* Processor: Broadcom BCM4709C0KFEBG dual-core @ 1.4 GHz
* Switch: BCM53012 in BCM4709C0KFEBG & external RTL8365MB
* DDR3 RAM: 512 MB
* Flash: 128 MB (ESMT F59L1G81LA-25T)
* 2.4GHz: BCM4366 4×4 2.4/5G single chip 802.11ac SoC
* 5GHz: BCM4366 4×4 2.4/5G single chip 802.11ac SoC
* Ports: 8 Ports, 1 WAN Ports

Flashing instructions:
* Boot to CFE Recovery Mode by holding the reset button while power-on.
* Connect to the router with an ethernet cable.
* Set IPv4 address of the computer to 192.168.1.2 subnet 255.255.255.0.
* Head to http://192.168.1.1.
* Reset NVRAM.
* Upload the OpenWrt image.

CFE bootloader may reject flashing the image due to image integrity check.
In that case, follow the instructions below.

* Rename the OpenWrt image as firmware.trx.
* Run a TFTP server and make it serve the firmware.trx file.
* Run the URL below on a browser or curl.
  http://192.168.1.1/do.htm?cmd=flash+-noheader+192.168.1.2:firmware.trx+flash0.trx

Signed-off-by: Arınç ÜNAL <arinc.unal at arinc9.com>
---
 target/linux/bcm53xx/base-files/etc/board.d/01_leds |  6 ++++++
 .../linux/bcm53xx/base-files/etc/board.d/02_network |  3 +++
 .../bcm53xx/base-files/etc/init.d/set_nvram_vars    | 13 +++++++++++++
 target/linux/bcm53xx/image/Makefile                 |  8 ++++++++
 4 files changed, 30 insertions(+)
 create mode 100755 target/linux/bcm53xx/base-files/etc/init.d/set_nvram_vars

diff --git a/target/linux/bcm53xx/base-files/etc/board.d/01_leds b/target/linux/bcm53xx/base-files/etc/board.d/01_leds
index aba526b9c3..f37fa79d4f 100644
--- a/target/linux/bcm53xx/base-files/etc/board.d/01_leds
+++ b/target/linux/bcm53xx/base-files/etc/board.d/01_leds
@@ -8,6 +8,12 @@ netgear,r8000)
 	ucidef_set_led_usbport "usb2" "USB 2.0" "bcm53xx:white:usb2" "usb1-port2" "usb2-port2"
 	ucidef_set_led_usbport "usb3" "USB 3.0" "bcm53xx:white:usb3" "usb1-port1" "usb2-port1" "usb4-port1"
 	;;
+asus,rt-ac88u)
+	ucidef_set_led_default "power" "Power" "white:power" "1"
+	ucidef_set_led_netdev "lan" "LAN" "white:lan" "eth1"
+	ucidef_set_led_usbport "usb2" "USB 2.0" "white:usb2" "usb1-port2"
+	ucidef_set_led_usbport "usb3" "USB 3.0" "white:usb3" "usb1-port1" "usb4-port1"
+	;;
 esac
 
 board_config_flush
diff --git a/target/linux/bcm53xx/base-files/etc/board.d/02_network b/target/linux/bcm53xx/base-files/etc/board.d/02_network
index 6d970e1d0e..822320c0a6 100644
--- a/target/linux/bcm53xx/base-files/etc/board.d/02_network
+++ b/target/linux/bcm53xx/base-files/etc/board.d/02_network
@@ -13,6 +13,9 @@ bcm53xx_setup_interfaces()
 	asus,rt-ac87u)
 		ucidef_set_interfaces_lan_wan "lan1 lan2 lan3" "wan"
 		;;
+	asus,rt-ac88u)
+		ucidef_set_interfaces_lan_wan "lan1 lan2 lan3 lan4 extsw" "wan"
+		;;
 	linksys,panamera)
 		ucidef_set_interfaces_lan_wan "lan1 lan2 lan3 lan4 lan5 lan6 lan7 lan8 extsw" "wan"
 		;;
diff --git a/target/linux/bcm53xx/base-files/etc/init.d/set_nvram_vars b/target/linux/bcm53xx/base-files/etc/init.d/set_nvram_vars
new file mode 100755
index 0000000000..9c2b3ebf4d
--- /dev/null
+++ b/target/linux/bcm53xx/base-files/etc/init.d/set_nvram_vars
@@ -0,0 +1,13 @@
+#!/bin/sh /etc/rc.common
+
+START=99
+boot() {
+	. /lib/functions.sh
+
+	case $(board_name) in
+		asus,rt-ac88u)
+			# clear et0macaddr which makes cfe recovery mode inaccessible, set eth1 & eth2 mac addresses and wireless LEDs behaviour variables on nvram
+			nvram unset et0macaddr set et1macaddr=$(nvram get 0:macaddr) set et2macaddr=$(nvram get 1:macaddr) set 0:ledbh9=0x7 set 1:ledbh9=0x7 && nvram commit
+			;;
+	esac
+}
diff --git a/target/linux/bcm53xx/image/Makefile b/target/linux/bcm53xx/image/Makefile
index aadac9c3d4..fc85a131cc 100644
--- a/target/linux/bcm53xx/image/Makefile
+++ b/target/linux/bcm53xx/image/Makefile
@@ -167,6 +167,14 @@ define Device/asus_rt-ac87u
 endef
 TARGET_DEVICES += asus_rt-ac87u
 
+define Device/asus_rt-ac88u
+  $(call Device/asus)
+  DEVICE_MODEL := RT-AC88U
+  DEVICE_PACKAGES := $(BRCMFMAC_4366C0) $(USB3_PACKAGES)
+  ASUS_PRODUCTID := RT-AC88U
+endef
+TARGET_DEVICES += asus_rt-ac88u
+
 define Device/asus_rt-n18u
   $(call Device/asus)
   DEVICE_MODEL := RT-N18U
-- 
2.25.1