Add support for the AlwayLink M01K43 5G CPE router.
Hardware specifications:
- SoC: MediaTek MT7981B (Filogic 820), dual-core Cortex-A53
- RAM: 256 MiB DDR3 (0x40000000, size 0x10000000)
- Flash: 128 MiB SPI-NAND (UBI, root) + 4 MiB SPI-NOR (bootloader)
- Ethernet: 4x 1 GbE LAN + 1x 2.5 GbE WAN
(MT7531 DSA switch; WAN via RTL8221B 2.5GbE PHY on MAC1)
- WiFi: MT7981 built-in 2x2 802.11ax (2.4 GHz + 5 GHz)
- USB: 1x xHCI (USB 2.0 only; USB 3.0 PHY pins not routed)
- Modem: M.2 B-Key slot wired for USB (tested: Quectel RM551E-GL,
Quectel RM520N-GL via QMI)
- LEDs: 10x GPIO LEDs (status, WAN, LAN, WiFi 2.4/5, signal bars)
- Buttons: WPS, Reset, RFKill
- Power: 12 V DC barrel jack
- UART: 3.3 V TTL header on PCB, 115200 8N1, no flow control
PCB silkscreen: M01K43 v5.0
Manufacturer: Shenzhen AlwayLink Wireless Technology Co., Ltd.
MAC addresses come from the 'ledeinfo' partition (mtd6) at offset 0x18
(label macaddr_ledeinfo_18); the stored value is the LAN MAC.
interface this port vendor firmware
------------------- ----------- --------------------------
eth0 / LAN bridge base + 0 base + 0
eth1 / WAN base + 1 base + 1
wifi 2.4 GHz band@0 base + 2 base (driver-derived)
wifi 5 GHz band@1 base + 3 base + LAA bit (driver)
The vendor's ethernet scheme (LAN = base, WAN = base + 1) is reproduced
exactly. For WiFi the vendor's proprietary mt_wifi driver ignores the
stored per-radio MAC and derives each BSSID from the base by setting the
locally-administered bit, so the radios are not given clean unicast
offsets. Under mainline mt76 + DSA, reusing the base (LAN) MAC on a radio
collides at L2 with the gmac0 conduit, so this port assigns the 2.4 GHz
and 5 GHz radios base + 2 and base + 3 — unique unicast addresses in the
same OUI block.
Installation
------------
Stock firmware defaults (verified on shipping units):
LAN IP: 192.168.100.1
SSH/web: user 'root', password 'admin'
Serial: 3.3 V TTL UART header on PCB, 115200 8N1, no flow control
Image artifacts produced by this device definition:
openwrt-mediatek-filogic-alwaylink_m01k43-squashfs-factory.bin
openwrt-mediatek-filogic-alwaylink_m01k43-squashfs-sysupgrade.bin
Before flashing, back up the per-unit partitions (cannot be
regenerated):
ssh root@192.168.100.1
dd if=/dev/mtd3 of=/tmp/factory.bin bs=1 count=655360
dd if=/dev/mtd6 of=/tmp/ledeinfo.bin bs=1 count=65536
exit
scp root@192.168.100.1:/tmp/factory.bin .
scp root@192.168.100.1:/tmp/ledeinfo.bin .
Method 1 - From an existing OpenWrt install (sysupgrade):
IMG=openwrt-mediatek-filogic-alwaylink_m01k43-squashfs-sysupgrade.bin
scp "$IMG" root@192.168.1.1:/tmp/sysupgrade.bin
ssh root@192.168.1.1 sysupgrade -n /tmp/sysupgrade.bin
Method 2 - U-Boot serial recovery via TFTP (requires 3.3 V USB-UART
adapter):
1. Attach 3.3 V USB-UART (TX, RX, GND) to the PCB header. Open a
terminal at 115200 8N1, no flow control.
2. Configure a TFTP server on the host PC at IP 192.168.2.88.
Place the factory image in the TFTP root, renamed if desired.
3. Power on the router. The BL2/U-Boot banner prints within ~1
second; press any key during the autoboot countdown to enter
the U-Boot menu.
4. From the menu, select 'Upgrade ubi'. U-Boot's default IP is
192.168.2.1 and it expects the TFTP server at 192.168.2.88.
Provide the factory image filename when prompted.
5. Wait for the write to complete; U-Boot reboots into OpenWrt.
Method 3 - From a NAND programmer (brick-recovery path):
1. Clip onto or desolder the SPI-NAND chip and dump the full
128 MiB with a programmer (e.g. RT809H, CH341A with NAND
adapter). Keep the dump as a recovery image.
2. Using the same programmer, write the factory.bin image to
the UBI region of the NAND. The SPI-NOR (BL2/u-boot-env/
Factory/FIP/woem/ledeinfo/nvram) must NOT be erased - those
partitions are per-unit and live on the separate 4 MiB NOR.
3. Reseat the chip and power on. The bootloader on NOR will
load the new kernel and rootfs from UBI.
Signed-off-by: Richard Jones <richard@netsolution.shop>
Link: https://github.com/openwrt/openwrt/pull/22818
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
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