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This commit adds support for Mercusys MR80X(EU) v3 router. Device specification: - SoC: Mediatek MT7981b, Cortex-A53, 64-bit - RAM: 512MB - Flash: SPI NAND GigaDevice GD5F1GQ5UEYIGY (128 MB) - Ethernet: 4x 100/1000 Mbps LAN1,LAN2,LAN3 & WAN - Wireless: 2.4GHz (802.11 b/g/n/ax) - Wireless: 5GHz (802.11 a/n/ac/ax) - LEDs: 1 orange and 1 green status LEDs, 4 green gpio-controlled LEDs on ethernet ports - Buttons: 1 (Reset) - Bootloader: Main U-Boot - U-Boot 2022.01-rc4. Additionally, both UBI slots contain "seconduboot" (also U-Boot 2022.01-rc4) Installation (UART): - Place OpenWrt initramfs-kernel image on tftp server with IP 192.168.1.2 - Attach UART, switch on the router and interrupt the boot process by pressing 'Ctrl-C'. - Set the uboot environment for startup. setenv tp_boot_idx 0; setenv bootcmd bootm 0x46000000; saveenv If the bootarg is set to boot from ubi1, also change it to ubi0. - Load and run OpenWrt initramfs image. setenv serverip 192.168.1.2; setenv ipaddr 192.168.1.1; tftpboot initramfs-kernel.bin; bootm - Browse IP 192.168.1.1, upload the 'sysupgrade' image and do upgrade. Recovery: - Press Reset button and power on the router. - Navigate to U-Boot recovery web server (http://192.168.1.1/) and upload the OEM firmware. Stock layout: 0x000000000000-0x000000200000 : "boot" 0x000000200000-0x000000300000 : "u-boot-env" 0x000000300000-0x000003500000 : "ubi0" 0x000003500000-0x000006700000 : "ubi1" 0x000006700000-0x000006f00000 : "userconfig" 0x000006f00000-0x000007300000 : "tp_data" ubi0/ubi1 format: U-Boot at boot checks that all volumes are in place: +-------------------------------+ | Volume Name: uboot Vol ID: 0| | Volume Name: kernel Vol ID: 1| | Volume Name: rootfs Vol ID: 2| +-------------------------------+ MAC addresses: +---------+-------------------+-----------+ | | MAC | Algorithm | +---------+-------------------+-----------+ | label | 94:0C:xx:xx:xx:12 | label | | WAN | 94:0C:xx:xx:xx:13 | label+1 | | LAN | 94:0C:xx:xx:xx:12 | label | | WLAN 2g | 94:0C:xx:xx:xx:11 | label-1 | | WLAN 5g | 94:0C:xx:xx:xx:10 | label-2 | +---------+-------------------+-----------+ label MAC address was found in UBI partition "tp_data", file "default-mac". Signed-off-by: Schneider Azima <Schneider-Azima12@protonmail.com> Link: https://github.com/openwrt/openwrt/pull/18181 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>