filogic: add support for ASUS TUF-AX4200

Hardware
--------
SOC:   MediaTek MT7986
RAM:   512MB DDR3
FLASH: 256MB SPI-NAND (Winbond W25N02KV)
WIFI:  Mediatek MT7986 DBDC 802.11ax 2.4/5 GHz
ETH:   MediaTek MT7531 Switch
       MaxLinear GPY211C 2.5 N-Base-T PHY
UART:  3V3 115200 8N1 (Pinout silkscreened / Do not ocnnect VCC)

Installation
------------

1. Download the OpenWrt initramfs image. Copy the image to a TFTP server
   reachable at 192.168.1.66/24. Rename the image to tufax4200.bin.

2. Connect the TFTP server to the AX4200. Conect to the serial console,
   interrupt the autoboot process by pressing '4' when prompted.

3. Download & Boot the OpenWrt initramfs image.

   $ setenv ipaddr 192.168.1.1
   $ setenv serverip 192.168.1.66
   $ tftpboot 0x46000000 tufax4200.bin
   $ bootm 0x46000000

4. Wait for OpenWrt to boot. Transfer the sysupgrade image to the device
   using scp and install using sysupgrade.

   $ sysupgrade -n <path-to-sysupgrade.bin>

Missing features
----------------

 - The LAN port LEDs are driven by the switch but OpenWrt does not
   correctly configure the output.

Signed-off-by: David Bauer <mail@david-bauer.net>

5 files changed, 59 insertions, 0 deletions

diff --git a/target/linux/mediatek/filogic/base-files/etc/board.d/02_network b/target/linux/mediatek/filogic/base-files/etc/board.d/02_network
index 13f52587c3..3d76e4d502 100644
--- a/target/linux/mediatek/filogic/base-files/etc/board.d/02_network
+++ b/target/linux/mediatek/filogic/base-files/etc/board.d/02_network
@@ -8,6 +8,10 @@ mediatek_setup_interfaces()
 	local board="$1"
 
 	case $board in
+	asus,tuf-ax4200)
+		CI_UBIPART="UBI_DEV"
+		ucidef_set_interfaces_lan_wan "lan1 lan2 lan3 lan4" "eth1"
+		;;
 	mediatek,mt7986a-rfb|\
 	mediatek,mt7986b-rfb)
 		ucidef_set_interfaces_lan_wan "lan0 lan1 lan2 lan3" eth1
@@ -34,6 +38,12 @@ mediatek_setup_macs()
 	local label_mac=""
 
 	case $board in
+	asus,tuf-ax4200)
+		CI_UBIPART="UBI_DEV"
+		addr=$(mtd_get_mac_binary_ubi "Factory" 0x4)
+		wan_mac="${addr}"
+		lan_mac="${addr}"
+		;;
 	xiaomi,redmi-router-ax6000-stock|\
 	xiaomi,redmi-router-ax6000-ubootmod)
 		wan_mac=$(mtd_get_mac_ascii Bdata ethaddr_wan)
diff --git a/target/linux/mediatek/filogic/base-files/etc/hotplug.d/firmware/11-mt76-caldata b/target/linux/mediatek/filogic/base-files/etc/hotplug.d/firmware/11-mt76-caldata
new file mode 100644
index 0000000000..0fe4c69988
--- /dev/null
+++ b/target/linux/mediatek/filogic/base-files/etc/hotplug.d/firmware/11-mt76-caldata
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+[ -e /lib/firmware/$FIRMWARE ] && exit 0
+
+. /lib/functions/caldata.sh
+
+board=$(board_name)
+
+case "$FIRMWARE" in
+"mediatek/mt7986_eeprom_mt7976_dbdc.bin")
+	case "$board" in
+	asus,tuf-ax4200)
+		CI_UBIPART="UBI_DEV"
+		caldata_extract_ubi "Factory" 0x0 0x1000
+		;;
+	esac
+	;;
+*)
+	exit 1
+	;;
+esac
diff --git a/target/linux/mediatek/filogic/base-files/etc/hotplug.d/ieee80211/11_fix_wifi_mac b/target/linux/mediatek/filogic/base-files/etc/hotplug.d/ieee80211/11_fix_wifi_mac
index fd822e3d4c..ecaf2eadcd 100644
--- a/target/linux/mediatek/filogic/base-files/etc/hotplug.d/ieee80211/11_fix_wifi_mac
+++ b/target/linux/mediatek/filogic/base-files/etc/hotplug.d/ieee80211/11_fix_wifi_mac
@@ -10,6 +10,15 @@ PHYNBR=${DEVPATH##*/phy}
 board=$(board_name)
 
 case "$board" in
+	asus,tuf-ax4200)
+		CI_UBIPART="UBI_DEV"
+		addr=$(mtd_get_mac_binary_ubi "Factory" 0x4)
+		# Originally, phy0 is phy1 mac with LA bit set. However, this would conflict
+		# addresses on mutiple VIFs with the other radio. Set LA bit and increment
+		# mac-address instead.
+		[ "$PHYNBR" = "0" ] && macaddr_setbit_la $(macaddr_add $addr 1) > /sys${DEVPATH}/macaddress
+		[ "$PHYNBR" = "1" ] && echo "$addr" > /sys${DEVPATH}/macaddress
+		;;
 	bananapi,bpi-r3)
 		addr=$(macaddr_add $(cat /sys/class/net/eth0/address) 2)
 		[ "$PHYNBR" = "0" ] && macaddr_unsetbit $addr 6 > /sys${DEVPATH}/macaddress
diff --git a/target/linux/mediatek/filogic/base-files/lib/preinit/10_fix_eth_mac.sh b/target/linux/mediatek/filogic/base-files/lib/preinit/10_fix_eth_mac.sh
new file mode 100644
index 0000000000..ec078741c9
--- /dev/null
+++ b/target/linux/mediatek/filogic/base-files/lib/preinit/10_fix_eth_mac.sh
@@ -0,0 +1,14 @@
+. /lib/functions/system.sh
+
+preinit_set_mac_address() {
+	case $(board_name) in
+	asus,tuf-ax4200)
+		CI_UBIPART="UBI_DEV"
+		addr=$(mtd_get_mac_binary_ubi "Factory" 0x4)
+		ip link set dev eth0 address "$addr"
+		ip link set dev eth1 address "$addr"
+		;;
+	esac
+}
+
+boot_hook_add preinit_main preinit_set_mac_address
diff --git a/target/linux/mediatek/filogic/base-files/lib/upgrade/platform.sh b/target/linux/mediatek/filogic/base-files/lib/upgrade/platform.sh
index 9a389d59b1..ca09741030 100755
--- a/target/linux/mediatek/filogic/base-files/lib/upgrade/platform.sh
+++ b/target/linux/mediatek/filogic/base-files/lib/upgrade/platform.sh
@@ -42,6 +42,11 @@ platform_do_upgrade() {
 	local board=$(board_name)
 
 	case "$board" in
+	asus,tuf-ax4200)
+		CI_UBIPART="UBI_DEV"
+		CI_KERNPART="linux"
+		nand_do_upgrade "$1"
+		;;
 	bananapi,bpi-r3)
 		local rootdev="$(cmdline_get_var root)"
 		rootdev="${rootdev##*/}"