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mediatek: filogic: add support for Xiaomi AX3000T
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Hardware specification:
  SoC: MediaTek MT7981B 2x A53
  Flash: ESMT F50L1G41LB 128MB
  RAM: NT52B128M16JR-FL 256MB
  Ethernet: 4x 10/100/1000 Mbps
  Switch: MediaTek MT7531AE
  WiFi: MediaTek MT7976C
  Button: Reset, Mesh
  Power: DC 12V 1A

Flash instructions:

1. Get ssh access
   ```
curl -X POST http://192.168.31.1/cgi-bin/luci/;stok=*******/api/misystem/arn_switch -d "open=1&model=1&level=%0Anvram%20set%20ssh_en%3D1%0A"
curl -X POST http://192.168.31.1/cgi-bin/luci/;stok=*******/api/misystem/arn_switch -d "open=1&model=1&level=%0Anvram%20commit%0A"
curl -X POST http://192.168.31.1/cgi-bin/luci/;stok=*******/api/misystem/arn_switch -d "open=1&model=1&level=%0Ased%20-i%20's%2Fchannel%3D.*%2Fchannel%3D%22debug%22%2Fg'%20%2Fetc%2Finit.d%2Fdropbear%0A"
curl -X POST http://192.168.31.1/cgi-bin/luci/;stok=*******/api/misystem/arn_switch -d "open=1&model=1&level=%0A%2Fetc%2Finit.d%2Fdropbear%20start%0A"
curl -X POST http://192.168.31.1/cgi-bin/luci/;stok=*******/api/misystem/arn_switch -d "open=1&model=1&level=%0Aecho%20-e%20%22root%5C%5Cnroot%22%20%7C%20passwd%20root%0A"
   ```

2. Backup import partitions
   ```
   dev:    size   erasesize  name
   mtd1: 00100000 00020000 "BL2"
   mtd2: 00040000 00020000 "Nvram"
   mtd3: 00040000 00020000 "Bdata"
   mtd4: 00200000 00020000 "Factory"
   mtd5: 00200000 00020000 "FIP"
   mtd8: 02200000 00020000 "ubi"
   mtd9: 02200000 00020000 "ubi1"
   mtd12: 00040000 00020000 "KF"
   ```

   Use these commands blow to backup your stock partitions.
   ```
   nanddump -f /tmp/BL2.bin /dev/mtd1
   nanddump -f /tmp/Nvram.bin /dev/mtd2
   nanddump -f /tmp/Bdata.bin /dev/mtd3
   nanddump -f /tmp/Factory.bin /dev/mtd4
   nanddump -f /tmp/FIP.bin /dev/mtd5
   nanddump -f /tmp/ubi.bin /dev/mtd8
   nanddump -f /tmp/KF.bin /dev/mtd12
   ```
   Then, transfer them to your computer via scp, netcat, tftp
   or others and keep them in a safe place.

3. Setup Nvram
   Get the current stock: `cat /proc/cmdline`

   If you find `firmware=0` or `mtd=ubi`, use these commands:
   ```
   nvram set boot_wait=on
   nvram set uart_en=1
   nvram set flag_boot_rootfs=1
   nvram set flag_last_success=1
   nvram set flag_boot_success=1
   nvram set flag_try_sys1_failed=0
   nvram set flag_try_sys2_failed=0
   nvram commit
   ```

   If you find `firmware=1` or `mtd=ubi1`, use these commands:
   ```
   nvram set boot_wait=on
   nvram set uart_en=1
   nvram set flag_boot_rootfs=0
   nvram set flag_last_success=0
   nvram set flag_boot_success=1
   nvram set flag_try_sys1_failed=0
   nvram set flag_try_sys2_failed=0
   nvram commit
   ```

4. Flash stock-initramfs-factory.ubi
   If you find `firmware=0` or `mtd=ubi`:
   `ubiformat /dev/mtd9 -y -f /tmp/stock-initramfs-factory.ubi`

   If you find `firmware=1` or `mtd=ubi1`:
   `ubiformat /dev/mtd8 -y -f /tmp/stock-initramfs-factory.ubi`

   Then reboot your router, it should boot to the openwrt
   initramfs system now.

5. Setup uboot-env
   Now it will be setup automatically in upgrade process,
   you can skip this step.

   If your `fw_setenv` did not work, you need run this command:
   `echo "/dev/mtd1 0x0 0x10000 0x20000" > /etc/fw_env.config`

   Then setup uboot-env:
   ```
   fw_setenv boot_wait on
   fw_setenv uart_en 1
   fw_setenv flag_boot_rootfs 0
   fw_setenv flag_last_success 1
   fw_setenv flag_boot_success 1
   fw_setenv flag_try_sys1_failed 8
   fw_setenv flag_try_sys2_failed 8
   fw_setenv mtdparts "nmbm0:1024k(bl2),256k(Nvram),256k(Bdata),
   2048k(factory),2048k(fip),256k(crash),256k(crash_log),
   34816k(ubi),34816k(ubi1),32768k(overlay),12288k(data),256k(KF)"
   ```

6. Flash stock-squashfs-sysupgrade.bin
   Use shell command:
   `sysupgrade -n /tmp/stock-squashfs-sysupgrade.bin`
   Or go to luci web.

If you need to change to Openwrt U-Boot layout, do next. If you
do not need, please ignore it.

Change to OpenWrt U-Boot:

1. Flash ubootmod-initramfs-factory.ubi
   Check mtd partitions: `cat /proc/mtd`
   ```
   mtd7: 00040000 00020000 "KF"
   mtd8: 02200000 00020000 "ubi_kernel"
   mtd9: 04e00000 00020000 "ubi"
   ```

   Run following command:
   `ubiformat /dev/mtd8 -y -f /tmp/ubootmod-initramfs-factory.ubi`
   Then reboot your router, it should boot to the openwrt initramfs
   system now.

2. Check mtd again
   ```
   mtd7: 00040000 00020000 "KF"
   mtd8: 07000000 00020000 "ubi"
   ```
   Make sure mtd8 is ubi.

3. Install kmod-mtd-rw
   Run command: `opkg update && opkg install kmod-mtd-rw`
   Or get it in openwrt server, or build it yourself, then install
   it manually

   Then run this command:
   `insmod /lib/modules/$(uname -r)/mtd-rw.ko i_want_a_brick=1`

4. Clean up pstore
   Run Command: `rm -f /sys/fs/pstore/*`

5. Format ubi and create new ubootenv volume
   ```
   ubidetach -p /dev/mtd8; ubiformat /dev/mtd8 -y; ubiattach -p /dev/mtd8
   ubimkvol /dev/ubi0 -n 0 -N ubootenv -s 128KiB
   ubimkvol /dev/ubi0 -n 1 -N ubootenv2 -s 128KiB
   ```

6. (Optional) Add recovery boot feature.
   ```
   ubimkvol /dev/ubi0 -n 2 -N recovery -s 10MiB
   ubiupdatevol /dev/ubi0_2 /tmp/ubootmod-initramfs-recovery.itb
   ```

7. Flash Openwrt U-Boot
   ```
   mtd write /tmp/ubootmod-preloader.bin BL2
   mtd write /tmp/ubootmod-bl31-uboot.fip FIP
   ```

6. Flash ubootmod-squashfs-sysupgrade.itb
   Use shell command:
   `sysupgrade -n /tmp/ubootmod-squashfs-sysupgrade.itb`
   Or go to luci web.

Now everything is done, Enjoy!

Go Back to stock from Openwrt U-Boot:

1. Force flash ubootmod-initramfs-recovery.itb
   Use shell command:
   `sysupgrade -F -n /tmp/ubootmod-initramfs-recovery.itb`
   Or go to luci web.
   Then it should boot to the openwrt initramfs system now.

2. Format ubi and Nvram
   ```
   ubidetach -p /dev/mtd8; ubiformat /dev/mtd8 -y; ubiattach -p /dev/mtd8
   mtd erase Nvram
   ```

3. Install kmod-mtd-rw
   Run command: `opkg update && opkg install kmod-mtd-rw`
   Or get it in openwrt server, or build it yourself, then install
   it manually

   Then run this command:
   `insmod /lib/modules/$(uname -r)/mtd-rw.ko i_want_a_brick=1`

4. Flash stock U-Boot and ubi
   ```
   mtd write /tmp/BL2.bin BL2
   mtd write /tmp/FIP.bin FIP
   mtd write /tmp/ubi.bin ubi
   ```
   Then reboot your router, waiting it finished rollback in minutes.

Go Back to stock from stock layout Openwrt:
   Just run command: `ubiformat /dev/mtd8 -y -f /tmp/ubi.bin`
   Then reboot your router, waiting it finished rollback in minutes.
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@dimfishr
dimfishr committed Nov 24, 2023
1 parent df16745 commit 5fd66a9
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34 changes: 34 additions & 0 deletions target/linux/mediatek/dts/mt7981b-xiaomi-mi-router-ax3000t-stock.dts
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// SPDX-License-Identifier: GPL-2.0-or-later OR MIT

/dts-v1/;
#include "mt7981b-xiaomi-mi-router-ax3000t.dtsi"

/ {
model = "Xiaomi Mi Router AX3000T (stock layout)";
compatible = "xiaomi,mi-router-ax3000t-stock", "mediatek,mt7981";
};

&spi_nand {
mediatek,nmbm;
mediatek,bmt-max-ratio = <1>;
mediatek,bmt-max-reserved-blocks = <64>;
};

&partitions {
// ubi_kernel is the ubi partition in stock.
partition@600000 {
label = "ubi_kernel";
reg = <0x600000 0x2200000>;
};

/* ubi is the result of squashing
* consecutive stock partitions:
* - ubi1
* - overlay
* - data
*/
partition@2800000 {
label = "ubi";
reg = <0x2800000 0x4e00000>;
};
};
16 changes: 16 additions & 0 deletions target/linux/mediatek/dts/mt7981b-xiaomi-mi-router-ax3000t-ubootmod.dts
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// SPDX-License-Identifier: GPL-2.0-or-later OR MIT

/dts-v1/;
#include "mt7981b-xiaomi-mi-router-ax3000t.dtsi"

/ {
model = "Xiaomi Mi Router AX3000T (OpenWrt U-Boot layout)";
compatible = "xiaomi,mi-router-ax3000t-ubootmod", "mediatek,mt7981";
};

&partitions {
partition@600000 {
label = "ubi";
reg = <0x600000 0x7000000>;
};
};
29 changes: 29 additions & 0 deletions target/linux/mediatek/dts/mt7981b-xiaomi-mi-router-ax3000t.dtsi
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// SPDX-License-Identifier: GPL-2.0-or-later OR MIT

/dts-v1/;
#include "mt7981b-xiaomi-mi-router-common.dtsi"


&gmac0 {
mac-address-increment = <(-2)>;
};

&i2c0 {
pinctrl-names = "default";
pinctrl-0 = <&i2c_pins>;
status = "okay";

nfc@57 {
compatible = "nt082c";
reg = <0x57>;
};
};

&pio {
i2c_pins: i2c-pins {
mux {
function = "i2c";
groups = "i2c0_1";
};
};
};
238 changes: 238 additions & 0 deletions target/linux/mediatek/dts/mt7981b-xiaomi-mi-router-common.dtsi
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// SPDX-License-Identifier: GPL-2.0-or-later OR MIT

/dts-v1/;
#include <dt-bindings/input/input.h>
#include <dt-bindings/gpio/gpio.h>

#include "mt7981.dtsi"

/ {
aliases {
serial0 = &uart0;
led-boot = &led_system_yellow;
led-failsafe = &led_system_yellow;
led-running = &led_system_blue;
led-upgrade = &led_system_yellow;
};

chosen {
stdout-path = "serial0:115200n8";
};

memory {
reg = <0 0x40000000 0 0x10000000>;
};

gpio-keys {
compatible = "gpio-keys";

reset {
label = "reset";
gpios = <&pio 1 GPIO_ACTIVE_LOW>;
linux,code = <KEY_RESTART>;
};

mesh {
label = "mesh";
gpios = <&pio 0 GPIO_ACTIVE_LOW>;
linux,code = <BTN_9>;
linux,input-type = <EV_SW>;
};
};

leds: leds {
compatible = "gpio-leds";

led_system_blue: system_blue {
label = "blue:system";
gpios = <&pio 9 GPIO_ACTIVE_LOW>;
};

led_system_yellow: system_yellow {
label = "yellow:system";
gpios = <&pio 10 GPIO_ACTIVE_LOW>;
};
};
};

&eth {
status = "okay";

gmac0: mac@0 {
compatible = "mediatek,eth-mac";
reg = <0>;
phy-mode = "2500base-x";

nvmem-cells = <&macaddr_factory_4>;
nvmem-cell-names = "mac-address";

fixed-link {
speed = <2500>;
full-duplex;
pause;
};
};
};

&mdio_bus {
switch: switch@1f {
compatible = "mediatek,mt7531";
reg = <31>;
reset-gpios = <&pio 39 GPIO_ACTIVE_HIGH>;
interrupt-controller;
#interrupt-cells = <1>;
interrupt-parent = <&pio>;
interrupts = <38 IRQ_TYPE_LEVEL_HIGH>;
};
};

&switch {
ports {
#address-cells = <1>;
#size-cells = <0>;

port@0 {
reg = <0>;
label = "wan";
};

port@1 {
reg = <1>;
label = "lan2";
};

port@2 {
reg = <2>;
label = "lan3";
};

port@3 {
reg = <3>;
label = "lan4";
};

port@6 {
reg = <6>;
ethernet = <&gmac0>;
phy-mode = "2500base-x";

fixed-link {
speed = <2500>;
full-duplex;
pause;
};
};
};
};

&spi0 {
pinctrl-names = "default";
pinctrl-0 = <&spi0_flash_pins>;
status = "okay";

spi_nand: flash@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "spi-nand";
reg = <0>;

spi-max-frequency = <52000000>;
spi-tx-bus-width = <4>;
spi-rx-bus-width = <4>;

partitions: partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;

partition@0 {
label = "BL2";
reg = <0x00 0x100000>;
read-only;
};

partition@100000 {
label = "Nvram";
reg = <0x100000 0x40000>;
};

partition@140000 {
label = "Bdata";
reg = <0x140000 0x40000>;
};

factory: partition@180000 {
label = "Factory";
reg = <0x180000 0x200000>;
read-only;

compatible = "nvmem-cells";
#address-cells = <1>;
#size-cells = <1>;

macaddr_factory_4: macaddr@4 {
reg = <0x4 0x6>;
};
};

partition@380000 {
label = "FIP";
reg = <0x380000 0x200000>;
read-only;
};

partition@580000 {
label = "crash";
reg = <0x580000 0x40000>;
read-only;
};

partition@5c0000 {
label = "crash_log";
reg = <0x5c0000 0x40000>;
read-only;
};

partition@7600000 {
label = "KF";
reg = <0x7600000 0x40000>;
read-only;
};
};
};
};

&pio {
spi0_flash_pins: spi0-pins {
mux {
function = "spi";
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>;
};
};
};

&wifi {
status = "okay";

mediatek,mtd-eeprom = <&factory 0x0>;
};

&uart0 {
status = "okay";
};

&watchdog {
status = "okay";
};
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