mediatek: add support for Acer Predator W6

Hardware
--------
SOC:   MediaTek MT7986A
RAM:   1GB DDR4
FLASH: 4GB eMMC
WiFi:  2x2 2.4 GHz 802.11 b/g/n/ax MT7916 DBDC
       4x4 5 GHz   802.11 a/n/ac/ax MT7986
       2x2 6 GHz   802.11ax MT7916 DBDC
ETH:   4x LAN 1Gbit/s (MT7531)
       1x WAN 2.5Gbit/s (GPY211)
BTN:   RESET, WPS
LED:   Antenna LEDs (GPIO)
       Mood-LED (Kinetic KTD2601) - unsupported
UART:  Header nest to USB port - 3V3 115200 8N1
       [BUTTON] GND - RX - TX [USB]

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

1. Connect to the device using serial console.

2. Interrupt the Autoboot process when promted by sending '0' twice.

3. Serve the OpenWrt initramfs image using TFTP at 192.168.1.66. Name
   the image "predator.bin" and conenct the TFTP server to the routers
   LAN port.

4. Configure U-Boot to allow loading unsigned images from MMC

   $ setenv bootcmd 'mmc read 0x40000000 0x00004400 0x0010000;
     fdt addr $(fdtcontroladdr); fdt rm /signature; bootm 0x40000000';
     saveenv

5. Transfer the image from U-Boot

   $ setenv serverip 192.168.1.66; setenv ipaddr 192.168.1.1;
     tftpboot 0x46000000 predator.bin; fdt addr $(fdtcontroladdr);
     fdt rm /signature; bootm

6. Wait for OpenWrt to boot

7. Transfer the OpenWrt sysupgrade image to the router using scp.

8. Install OpenWrt using sysupgrade.

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

target/linux/mediatek/filogic/base-files/etc/board.d/02_network

@@ -8,6 +8,9 @@ mediatek_setup_interfaces()
 	local board="$1"
 
 	case $board in
+	acer,predator-w6)
+		ucidef_set_interfaces_lan_wan "lan1 lan2 lan3 game" eth1
+		;;
 	asus,tuf-ax4200)
 		ucidef_set_interfaces_lan_wan "lan1 lan2 lan3 lan4" eth1
 		;;

target/linux/mediatek/filogic/base-files/etc/hotplug.d/firmware/11-mt76-caldata

@@ -7,6 +7,20 @@
 board=$(board_name)
 
 case "$FIRMWARE" in
+"mediatek/mt7916_eeprom.bin")
+	case "$board" in
+	acer,predator-w6)
+		caldata_extract_mmc "factory" 0xA0000 0x1000
+		;;
+	esac
+	;;
+"mediatek/mt7986_eeprom_mt7976.bin")
+	case "$board" in
+	acer,predator-w6)
+		caldata_extract_mmc "factory" 0x0 0x1000
+		;;
+	esac
+	;;
 "mediatek/mt7986_eeprom_mt7976_dbdc.bin")
 	case "$board" in
 	asus,tuf-ax4200)

target/linux/mediatek/filogic/base-files/etc/hotplug.d/ieee80211/11_fix_wifi_mac

@@ -10,6 +10,12 @@ PHYNBR=${DEVPATH##*/phy}
 board=$(board_name)
 
 case "$board" in
+	acer,predator-w6)
+		key_path="/var/qcidata/data"
+		[ "$PHYNBR" = "0" ] && cat $key_path/2gMAC > /sys${DEVPATH}/macaddress
+		[ "$PHYNBR" = "1" ] && cat $key_path/6gMAC > /sys${DEVPATH}/macaddress
+		[ "$PHYNBR" = "2" ] && cat $key_path/5gMAC > /sys${DEVPATH}/macaddress
+		;;
 	asus,tuf-ax4200)
 		CI_UBIPART="UBI_DEV"
 		addr=$(mtd_get_mac_binary_ubi "Factory" 0x4)

target/linux/mediatek/filogic/base-files/lib/preinit/05_extract_factory_data.sh

@@ -0,0 +1,25 @@
+. /lib/functions/system.sh
+
+predator_w6_factory_extract() {
+	local mmc_part
+
+	mmc_part="$(find_mmc_part qcidata)"
+
+	mkdir -p /var/qcidata/data
+	mkdir -p /var/qcidata/mount
+
+	mount -r "$mmc_part" /var/qcidata/mount
+
+	cp /var/qcidata/mount/factory/*MAC "/var/qcidata/data/"
+	umount "/var/qcidata/mount"
+}
+
+preinit_extract_factory() {
+	case $(board_name) in
+	acer,predator-w6)
+		predator_w6_factory_extract
+		;;
+	esac
+}
+
+boot_hook_add preinit_main preinit_extract_factory

target/linux/mediatek/filogic/base-files/lib/preinit/10_fix_eth_mac.sh

@@ -2,6 +2,14 @@
 
 preinit_set_mac_address() {
 	case $(board_name) in
+	acer,predator-w6)
+		key_path="/var/qcidata/data"
+		ip link set dev lan1 address "$(cat $key_path/LANMAC)"
+		ip link set dev lan2 address "$(cat $key_path/LANMAC)"
+		ip link set dev lan3 address "$(cat $key_path/LANMAC)"
+		ip link set dev game address "$(cat $key_path/LANMAC)"
+		ip link set dev eth1 address "$(cat $key_path/WANMAC)"
+		;;
 	asus,tuf-ax4200)
 		CI_UBIPART="UBI_DEV"
 		addr=$(mtd_get_mac_binary_ubi "Factory" 0x4)

target/linux/mediatek/filogic/base-files/lib/upgrade/platform.sh

@@ -51,6 +51,11 @@ platform_do_upgrade() {
 	local board=$(board_name)
 
 	case "$board" in
+	acer,predator-w6)
+		CI_KERNPART="kernel"
+		CI_ROOTPART="rootfs"
+		emmc_do_upgrade "$1"
+		;;
 	asus,tuf-ax4200)
 		CI_UBIPART="UBI_DEV"
 		CI_KERNPART="linux"

target/linux/mediatek/image/filogic.mk

@@ -98,6 +98,21 @@ define Device/asus_tuf-ax4200
 endef
 TARGET_DEVICES += asus_tuf-ax4200
 
+define Device/acer_predator-w6
+  DEVICE_VENDOR := Acer
+  DEVICE_MODEL := Predator W6
+  DEVICE_DTS := mt7986a-acer-predator-w6
+  DEVICE_DTS_DIR := ../dts
+  DEVICE_DTS_LOADADDR := 0x47000000
+  DEVICE_PACKAGES := kmod-usb3 kmod-mt7986-firmware kmod-mt7916-firmware mt7986-wo-firmware
+  IMAGES := sysupgrade.bin
+  KERNEL := kernel-bin | lzma | fit lzma $$(KDIR)/image-$$(firstword $$(DEVICE_DTS)).dtb
+  KERNEL_INITRAMFS := kernel-bin | lzma | \
+	fit lzma $$(KDIR)/image-$$(firstword $$(DEVICE_DTS)).dtb with-initrd | pad-to 64k
+  IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
+endef
+TARGET_DEVICES += acer_predator-w6
+
 define Device/bananapi_bpi-r3
   DEVICE_VENDOR := Bananapi
   DEVICE_MODEL := BPi-R3