Mikhail Zhilkin d8002cb627 mediatek: add support for netis NX31
This PR adds support for netis NX31 router.

Specification
-------------
- SoC       : MediaTek MT7981BA dual-core ARM Cortex-A53 1.3 GHz
- RAM       : 256 MiB DDR3
- Flash     : SPI-NAND 128 MiB (ESMT)
- WLAN      : MediaTek MT7976CN dual-band WiFi 6
  - 2.4 GHz : b/g/n/ax, MIMO 2x2
  - 5 GHz   : a/n/ac/ax, MIMO 2x2
- Ethernet  : 10/100/1000 Mbps x3 (LAN, MediaTek MT7531AE)
              10/100/1000 Mbps x1 (WAN, SoC internal phy)
- USB       : No
- Buttons   : Mesh, Reset
- LEDs      : 1x Power (blue), unmanaged
              1x Status (blue), gpio-controlled
              1x WiFi 2.4 GHz (blue), gpio-controlled
              1x WiFi 5 GHz (blue), gpio-controlled
              3x LAN activity (blue), switch-controlled
              1x WAN activity (blue), gpio-controlled
- Power     : 12 VDC, 1 A

Installation
------------
1. Connect to the router using ssh (user: admin, pass: web interface
   password)
2. Make mtd backup:
   cat /dev/mtd0 | gzip -1 -c > /tmp/mtd0_spi0.0.bin.gz
   cat /dev/mtd1 | gzip -1 -c > /tmp/mtd1_BL2.bin.gz
   cat /dev/mtd2 | gzip -1 -c > /tmp/mtd2_u-boot-env.bin.gz
   cat /dev/mtd3 | gzip -1 -c > /tmp/mtd3_Factory.bin.gz
   cat /dev/mtd4 | gzip -1 -c > /tmp/mtd4_FIP.bin.gz
   cat /dev/mtd5 | gzip -1 -c > /tmp/mtd5_ubi.bin.gz
3. Download mtd backup from the /tmp dir of the router to your PC using
   scp protocol
4. Upload OpenWrt 'bl31-uboot.fip', 'preloader.bin' images to the /tmp
   dir of the router using scp protocol
5. Write FIP and BL2 (replace bootloader):
   mtd write /tmp/openwrt-mediatek-filogic-netis_nx31-bl31-uboot.fip FIP
   mtd write /tmp/openwrt-mediatek-filogic-netis_nx31-preloader.bin BL2
6. Place OpenWrt
   'openwrt-mediatek-filogic-netis_nx31-initramfs-recovery.itb' image on
   the tftp server (IP: 192.168.1.254)
7. Erase 'ubi' partition and reboot the router:
   mtd erase ubi
   reboot
8. U-Boot automatically boot OpenWrt recovery image from tftp server to
   the RAM
9. Upload OpenWrt 'sysupgrade.itb' image to the /tmp dir of the router
   (IP: 192.168.1.1) using scp protocol
10. Connect to the router using ssh and run:
    sysupgrade -n openwrt-mediatek-filogic-netis_nx31-squashfs-sysupgrade.itb

Return to stock
---------------
1. Unpack stock BL2 and FIP partitions backup
2. Upload stock BL2 and FIP partitions backup to the /tmp dir of the
   router using scp protocol
3. Connect to the router using ssh and run:
   apk update && apk add kmod-mtd-rw
   insmod mtd-rw i_want_a_brick=1
   mtd unlock BL2
   mtd unlock FIP
4. Restore backup:
   mtd write /tmp/mtd4_FIP.bin FIP
   mtd write /tmp/mtd1_BL2.bin BL2
5. Erase ubi and reboot:
   mtd erase ubi
   reboot
6. Power off the router
7. Press Reset button and power on the router. Release the button after
   ~10 sec
8. Navigate to U-Boot recovery web server (http://192.168.1.1/) and
   upload the OEM firmware

Recovery
--------
1. Place OpenWrt
   'openwrt-mediatek-filogic-netis_nx31-initramfs-recovery.itb' image on
   the tftp server (IP: 192.168.1.254)
2. Press “Reset” button and power on the router. After ~10 sec release
   the button.
3. Use OpenWrt initramfs system for recovery

MAC addresses
-------------
+---------+-------------------+-----------+
|         | MAC               | Algorithm |
+---------+-------------------+-----------+
| LAN     | dc:xx:xx:d1:xx:18 | label     |
| WAN     | dc:xx:xx:d1:xx:1a | label+2   |
| WLAN 2g | de:xx:xx:11:xx:19 |           |
| WLAN 5g | de:xx:xx:71:xx:19 |           |
+---------+-------------------+-----------+
The LAN MAC was found in 'Factory', 0x1fef20
The WAN MAC was found in 'Factory', 0x1fef26
The WLAN 2g/5g MAC prototype was found in 'Factory', 0x4

Signed-off-by: Mikhail Zhilkin <csharper2005@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/18324
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2025-04-06 20:14:18 +02:00

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--- /dev/null
+++ b/configs/mt7981_netis_nx31_defconfig
@@ -0,0 +1,106 @@
+CONFIG_ARM=y
+CONFIG_SYS_HAS_NONCACHED_MEMORY=y
+CONFIG_POSITION_INDEPENDENT=y
+CONFIG_ARCH_MEDIATEK=y
+CONFIG_TEXT_BASE=0x41e00000
+CONFIG_SYS_MALLOC_F_LEN=0x4000
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_DEFAULT_DEVICE_TREE="mt7981-netis_nx31"
+CONFIG_OF_LIBFDT_OVERLAY=y
+CONFIG_TARGET_MT7981=y
+CONFIG_SYS_LOAD_ADDR=0x46000000
+CONFIG_PRE_CON_BUF_ADDR=0x4007ef00
+CONFIG_DEBUG_UART_BASE=0x11002000
+CONFIG_DEBUG_UART_CLOCK=40000000
+CONFIG_DEBUG_UART=y
+CONFIG_FIT=y
+CONFIG_BOOTDELAY=30
+CONFIG_AUTOBOOT_KEYED=y
+CONFIG_AUTOBOOT_MENU_SHOW=y
+CONFIG_DEFAULT_FDT_FILE="mediatek/mt7981-netis_nx31.dtb"
+CONFIG_LOGLEVEL=7
+CONFIG_PRE_CONSOLE_BUFFER=y
+CONFIG_LOG=y
+CONFIG_BOARD_LATE_INIT=y
+CONFIG_HUSH_PARSER=y
+CONFIG_SYS_PROMPT="MT7981> "
+CONFIG_CMD_CPU=y
+CONFIG_CMD_LICENSE=y
+CONFIG_CMD_BOOTMENU=y
+CONFIG_CMD_ASKENV=y
+CONFIG_CMD_ERASEENV=y
+CONFIG_CMD_ENV_FLAGS=y
+CONFIG_CMD_STRINGS=y
+CONFIG_CMD_DM=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_GPT=y
+CONFIG_CMD_MTD=y
+CONFIG_CMD_PART=y
+CONFIG_CMD_TFTPSRV=y
+CONFIG_CMD_RARP=y
+CONFIG_CMD_CDP=y
+CONFIG_CMD_SNTP=y
+CONFIG_CMD_LINK_LOCAL=y
+CONFIG_CMD_DHCP=y
+CONFIG_CMD_DNS=y
+CONFIG_CMD_PING=y
+CONFIG_CMD_PXE=y
+CONFIG_CMD_CACHE=y
+CONFIG_CMD_PSTORE=y
+CONFIG_CMD_PSTORE_MEM_ADDR=0x42ff0000
+CONFIG_CMD_UUID=y
+CONFIG_CMD_HASH=y
+CONFIG_CMD_SMC=y
+CONFIG_CMD_UBI=y
+CONFIG_CMD_UBI_RENAME=y
+CONFIG_OF_EMBED=y
+CONFIG_ENV_OVERWRITE=y
+CONFIG_ENV_IS_IN_UBI=y
+CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
+CONFIG_ENV_UBI_PART="ubi"
+CONFIG_ENV_UBI_VOLUME="ubootenv"
+CONFIG_ENV_UBI_VOLUME_REDUND="ubootenv2"
+CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+CONFIG_USE_DEFAULT_ENV_FILE=y
+CONFIG_DEFAULT_ENV_FILE="defenvs/netis_nx31_env"
+CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
+CONFIG_VERSION_VARIABLE=y
+CONFIG_NETCONSOLE=y
+CONFIG_USE_IPADDR=y
+CONFIG_IPADDR="192.168.1.1"
+CONFIG_USE_SERVERIP=y
+CONFIG_SERVERIP="192.168.1.254"
+CONFIG_NET_RANDOM_ETHADDR=y
+CONFIG_BUTTON=y
+CONFIG_BUTTON_GPIO=y
+CONFIG_CLK=y
+CONFIG_GPIO_HOG=y
+CONFIG_LED=y
+CONFIG_LED_BLINK=y
+CONFIG_LED_GPIO=y
+# CONFIG_MMC is not set
+CONFIG_MTD=y
+CONFIG_DM_MTD=y
+CONFIG_MTD_SPI_NAND=y
+CONFIG_MTD_UBI_FASTMAP=y
+CONFIG_PHY_FIXED=y
+CONFIG_MEDIATEK_ETH=y
+CONFIG_PHY=y
+CONFIG_PHY_MTK_TPHY=y
+CONFIG_PINCTRL=y
+CONFIG_PINCONF=y
+CONFIG_PINCTRL_MT7981=y
+CONFIG_POWER_DOMAIN=y
+CONFIG_MTK_POWER_DOMAIN=y
+CONFIG_DM_REGULATOR=y
+CONFIG_DM_REGULATOR_FIXED=y
+CONFIG_DM_REGULATOR_GPIO=y
+CONFIG_RAM=y
+CONFIG_DM_SERIAL=y
+CONFIG_SERIAL_RX_BUFFER=y
+CONFIG_MTK_SERIAL=y
+CONFIG_SPI=y
+CONFIG_DM_SPI=y
+CONFIG_MTK_SPIM=y
+CONFIG_ZSTD=y
+CONFIG_HEXDUMP=y
--- /dev/null
+++ b/arch/arm/dts/mt7981-netis_nx31.dts
@@ -0,0 +1,162 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2025
+ * Author: Mikhail Zhilkin <csharper2005@gmail.com>
+ */
+
+/dts-v1/;
+#include "mt7981.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
+
+/ {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ model = "netis NX31";
+ compatible = "netis,nx31", "mediatek,mt7981";
+
+ chosen {
+ stdout-path = &uart0;
+ tick-timer = &timer0;
+ };
+
+ memory@40000000 {
+ device_type = "memory";
+ reg = <0x40000000 0x10000000>;
+ };
+
+ keys {
+ compatible = "gpio-keys";
+
+ button-0 {
+ label = "mesh";
+ linux,code = <BTN_0>;
+ gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
+ };
+
+ button-1 {
+ label = "reset";
+ linux,code = <KEY_RESTART>;
+ gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
+ };
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ led-0 {
+ label = "blue:wlan2g";
+ gpios = <&gpio 5 GPIO_ACTIVE_LOW>;
+ };
+
+ led-1 {
+ label = "blue:status";
+ gpios = <&gpio 7 GPIO_ACTIVE_LOW>;
+ };
+
+ led-2 {
+ label = "blue:wan";
+ gpios = <&gpio 8 GPIO_ACTIVE_LOW>;
+ };
+
+ led-3 {
+ label = "blue:wlan5g";
+ gpios = <&gpio 34 GPIO_ACTIVE_LOW>;
+ };
+ };
+};
+
+&uart0 {
+ mediatek,force-highspeed;
+ status = "okay";
+};
+
+&eth {
+ status = "okay";
+ mediatek,gmac-id = <0>;
+ phy-mode = "2500base-x";
+ mediatek,switch = "mt7531";
+ reset-gpios = <&gpio 39 GPIO_ACTIVE_HIGH>;
+
+ fixed-link {
+ speed = <2500>;
+ full-duplex;
+ };
+};
+
+&pinctrl {
+ spi_flash_pins: spi0-pins-func-1 {
+ mux {
+ function = "flash";
+ groups = "spi0", "spi0_wp_hold";
+ };
+
+ conf-pu {
+ pins = "SPI0_CS", "SPI0_HOLD", "SPI0_WP";
+ drive-strength = <MTK_DRIVE_8mA>;
+ bias-pull-up = <MTK_PUPD_SET_R1R0_11>;
+ };
+
+ conf-pd {
+ pins = "SPI0_CLK", "SPI0_MOSI", "SPI0_MISO";
+ drive-strength = <MTK_DRIVE_8mA>;
+ bias-pull-down = <MTK_PUPD_SET_R1R0_11>;
+ };
+ };
+};
+
+&spi0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi_flash_pins>;
+ status = "okay";
+ must_tx;
+ enhance_timing;
+ dma_ext;
+ ipm_design;
+ support_quad;
+ tick_dly = <2>;
+ sample_sel = <0>;
+
+ spi_nand@0 {
+ compatible = "spi-nand";
+ reg = <0>;
+ spi-max-frequency = <52000000>;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "BL2";
+ reg = <0x0 0x100000>;
+ };
+
+ partition@100000 {
+ label = "u-boot-env (unused)";
+ reg = <0x100000 0x80000>;
+ };
+
+ partition@160000 {
+ label = "Factory";
+ reg = <0x180000 0x200000>;
+ };
+
+ partition@380000 {
+ label = "FIP";
+ reg = <0x380000 0x200000>;
+ };
+
+ partition@580000 {
+ label = "ubi";
+ reg = <0x580000 0x7a80000>;
+ };
+ };
+ };
+};
+
+&watchdog {
+ status = "disabled";
+};
--- /dev/null
+++ b/defenvs/netis_nx31_env
@@ -0,0 +1,57 @@
+ipaddr=192.168.1.1
+serverip=192.168.1.254
+loadaddr=0x46000000
+console=earlycon=uart8250,mmio32,0x11002000 console=ttyS0
+bootcmd=run check_buttons ; if pstore check ; then run boot_recovery ; else run boot_ubi ; fi
+bootconf=config-1
+bootdelay=0
+bootfile=openwrt-mediatek-filogic-netis_nx31-initramfs-recovery.itb
+bootfile_bl2=openwrt-mediatek-filogic-netis_nx31-preloader.bin
+bootfile_fip=openwrt-mediatek-filogic-netis_nx31-bl31-uboot.fip
+bootfile_upg=openwrt-mediatek-filogic-netis_nx31-squashfs-sysupgrade.itb
+bootled_status=blue:status
+bootmenu_confirm_return=askenv - Press ENTER to return to menu ; bootmenu 60
+bootmenu_default=0
+bootmenu_delay=0
+bootmenu_title= ( ( ( OpenWrt ) ) )
+bootmenu_0=Initialize environment.=run _firstboot
+bootmenu_0d=Run default boot command.=run boot_default
+bootmenu_1=Boot system via TFTP.=run boot_tftp ; run bootmenu_confirm_return
+bootmenu_2=Boot production system from NAND.=run boot_production ; run bootmenu_confirm_return
+bootmenu_3=Boot recovery system from NAND.=run boot_recovery ; run bootmenu_confirm_return
+bootmenu_4=Load production system via TFTP then write to NAND.=setenv noboot 1 ; setenv replacevol 1 ; run boot_tftp_production ; setenv noboot ; setenv replacevol ; run bootmenu_confirm_return
+bootmenu_5=Load recovery system via TFTP then write to NAND.=setenv noboot 1 ; setenv replacevol 1 ; run boot_tftp_recovery ; setenv noboot ; setenv replacevol ; run bootmenu_confirm_return
+bootmenu_6=Load BL31+U-Boot FIP via TFTP then write to NAND.=run boot_tftp_write_fip ; run bootmenu_confirm_return
+bootmenu_7=Load BL2 preloader via TFTP then write to NAND.=run boot_tftp_write_bl2 ; run bootmenu_confirm_return
+bootmenu_8=Reboot.=reset
+bootmenu_9=Reset all settings to factory defaults.=run reset_factory ; reset
+boot_first=if button reset ; then led $bootled_status on ; run boot_default ; fi ; bootmenu
+boot_default=if env exists flag_recover ; then else run bootcmd ; fi ; run boot_recovery ; setenv replacevol 1 ; run boot_tftp_forever
+boot_production=led $bootled_status on ; run ubi_read_production && bootm $loadaddr#$bootconf ; led bootled_status off
+boot_recovery=led $bootled_status on ; run ubi_read_recovery && bootm $loadaddr#$bootconf ; led bootled_status off
+boot_ubi=run boot_production ; run boot_recovery ; run boot_tftp_forever
+boot_tftp_forever=led $bootled_status on ; while true ; do run boot_tftp ; sleep 1 ; done
+boot_tftp_production=tftpboot $loadaddr $bootfile_upg && env exists replacevol && iminfo $loadaddr && run ubi_write_production ; if env exists noboot ; then else bootm $loadaddr#$bootconf ; fi
+boot_tftp_recovery=tftpboot $loadaddr $bootfile && env exists replacevol && iminfo $loadaddr && run ubi_write_recovery ; if env exists noboot ; then else bootm $loadaddr#$bootconf ; fi
+boot_tftp=tftpboot $loadaddr $bootfile && bootm $loadaddr#$bootconf
+boot_tftp_write_fip=tftpboot $loadaddr $bootfile_fip && run mtd_write_fip && run reset_factory
+boot_tftp_write_bl2=tftpboot $loadaddr $bootfile_bl2 && run mtd_write_bl2
+check_buttons=if button reset ; then run boot_tftp ; fi
+ethaddr_factory=mtd read Factory 0x40080000 0x1e0000 0x20000 && env readmem -b ethaddr 0x4009ef20 0x6 ; setenv ethaddr_factory
+part_default=production
+part_recovery=recovery
+reset_factory=ubi part ubi ; mw $loadaddr 0x0 0x800 ; ubi write $loadaddr ubootenv 0x800 ; ubi write $loadaddr ubootenv2 0x800
+mtd_write_fip=mtd erase FIP && mtd write FIP $loadaddr
+mtd_write_bl2=mtd erase BL2 && mtd write BL2 $loadaddr
+ubi_create_env=ubi check ubootenv || ubi create ubootenv 0x100000 dynamic || run ubi_format ; ubi check ubootenv2 || ubi create ubootenv2 0x100000 dynamic || run ubi_format
+ubi_format=ubi detach ; mtd erase ubi && ubi part ubi ; reset
+ubi_prepare_rootfs=if ubi check rootfs_data ; then else if env exists rootfs_data_max ; then ubi create rootfs_data $rootfs_data_max dynamic || ubi create rootfs_data - dynamic ; else ubi create rootfs_data - dynamic ; fi ; fi
+ubi_read_production=ubi read $loadaddr fit && iminfo $loadaddr && run ubi_prepare_rootfs
+ubi_read_recovery=ubi check recovery && ubi read $loadaddr recovery
+ubi_remove_rootfs=ubi check rootfs_data && ubi remove rootfs_data
+ubi_write_production=ubi check fit && ubi remove fit ; run ubi_remove_rootfs ; ubi create fit $filesize dynamic && ubi write $loadaddr fit $filesize
+ubi_write_recovery=ubi check recovery && ubi remove recovery ; run ubi_remove_rootfs ; ubi create recovery $filesize dynamic && ubi write $loadaddr recovery $filesize
+_init_env=setenv _init_env ; run ubi_create_env ; saveenv ; saveenv
+_firstboot=setenv _firstboot ; run ethaddr_factory ; run _switch_to_menu ; run _init_env ; run boot_first
+_switch_to_menu=setenv _switch_to_menu ; setenv bootdelay 3 ; setenv bootmenu_delay 3 ; setenv bootmenu_0 $bootmenu_0d ; setenv bootmenu_0d ; run _bootmenu_update_title
+_bootmenu_update_title=setenv _bootmenu_update_title ; setenv bootmenu_title "$bootmenu_title $ver"