fea2264d9f
Specifications:
- Device: DNA Valokuitu Plus EX400
- SoC: MT7621A
- Flash: 256MB NAND
- RAM: 256MB
- Ethernet: Built-in, 2 x 1GbE
- Wifi: MT7603 2.4 GHz, MT7615 5 GHz (4x internal antennas)
- USB: 1x 3.0
- LED: 1x green/red, 1x green
- Buttons: Reset
MAC addresses:
- LAN: u-boot 'ethaddr' (label)
- WAN: label + 1
- 2.4 GHz: label + 6
- 5 GHz: label + 7
Serial:
There is a black block connector next to the red ethernet connector. It
is accessible also through holes in the casing.
Pinout (TTL 3.3V)
+---+---+
|Tx |Rx |
+---+---+
|Vcc|Gnd|
+---+---+
Firmware:
The vendor firmware is a fork of OpenWrt (Reboot) with a kernel version
4.4.93. The flash is arranged as below and there is a dual boot
mechanism alternating between rootfs_0 and rootfs_1.
+-------+------+------+-----------+-----------+
| | env1 | env2 | rootfs_0 | rootfs_1 |
| +------+------+-----------+-----------+
| | UBI volumes |
+-------+-------------------------------------+
|U-Boot | UBI |
+-------+-------------------------------------+
|mtd0 | mtd1 |
+-------+-------------------------------------+
| NAND |
+---------------------------------------------+
In OpenWrt rootfs_0 will be used as a boot partition that will contain the
kernel and the dtb. The squashfs rootfs and overlay are standard OpenWrt
behaviour.
+-------+------+------+-----------+--------+------------+
| | env1 | env2 | rootfs_0 | rootfs | rootfs_data|
| +------+------+-----------+--------+------------+
| | UBI volumes |
+-------+-----------------------------------------------+
|U-Boot | UBI |
+-------+-----------------------------------------------+
|mtd0 | mtd1 |
+-------+-----------------------------------------------+
| NAND |
+-------------------------------------------------------+
U-boot:
With proper serial access booting can be halted to U-boot by pressing any
key. TFTP and flash writes are available, but only the first one has been
tested.
NOTE: Recovery mode can be accessed by holding down the reset button while
powering on the device. The led 'Update' will show a solid green light
once ready. A web server will be running at 192.168.1.1:80 and it will
allow flashing a firmware package. You can cycle between rootfs_0 and
rootfs_1 by pressing the reset button once.
Root password:
With the vendor web UI create a backup of your settings and download the
archive to your computer. Within the archive in the file
/etc/shadow replace the password hash for root with that of a password you
know. Restore the configuration with the vendor web UI and you will have
changed the root password.
SSH access:
You might need to enable the SSH service for LAN interface as by default
it's enabled for WAN only.
Installing OpenWrt:
With the vendor web UI install the OpenWrt factory image. Alternatively,
ssh to the device and use sysupgrade -n from cli.
Finalize by installing the OpenWrt sysupgrade image to get a fully
functioning system.
Reverting to the vendor firmware:
Boot with OpenWrt initramfs image
- Remove volumes rootfs_0, rootfs and rootfs_data and create vendor
volumes.
ubirmvol /dev/ubi0 -n 2
ubirmvol /dev/ubi0 -n 3
ubirmvol /dev/ubi0 -n 4
ubimkvol /dev/ubi0 -N rootfs_0 -S 990
ubimkvol /dev/ubi0 -N rootfs_1 -S 990
Power off and enter to the U-boot recovery to install the vendor
firmware.
Known issues:
- MACs for wifi are stored in currently unknown place but it seems
to persist over power-off. They might be stored on the chip.
Signed-off-by: Mauri Sandberg <maukka@ext.kapsi.fi>
[rmilecki: try NVMEM for MACs]
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
131 lines
2.1 KiB
Plaintext
131 lines
2.1 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
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#include "mt7621.dtsi"
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/input/input.h>
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#include <dt-bindings/leds/common.h>
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/ {
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compatible = "dna,valokuitu-plus-ex400", "mediatek,mt7621-soc";
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model = "DNA Valokuitu Plus EX400";
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aliases {
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ethernet0 = &gmac0;
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label-mac-device = &gmac0;
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led-boot = &led_status_red;
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led-failsafe = &led_status_red;
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led-running = &led_status_green;
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led-upgrade = &led_update_green;
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};
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chosen {
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bootargs-override = "console=ttyS0,115200 rootfstype=squashfs,jffs2";
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};
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keys {
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compatible = "gpio-keys";
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reset {
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label = "reset";
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gpios = <&gpio 18 GPIO_ACTIVE_LOW>;
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linux,code = <KEY_RESTART>;
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};
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};
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leds {
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compatible = "gpio-leds";
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led_status_green: led-0 {
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color = <LED_COLOR_ID_GREEN>;
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function = LED_FUNCTION_STATUS;
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gpios = <&gpio 8 GPIO_ACTIVE_LOW>;
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};
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led_status_red: led-1 {
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color = <LED_COLOR_ID_RED>;
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function = LED_FUNCTION_STATUS;
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gpios = <&gpio 11 GPIO_ACTIVE_HIGH>;
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};
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led_update_green: led-2 {
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color = <LED_COLOR_ID_GREEN>;
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function = LED_FUNCTION_PROGRAMMING;
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gpios = <&gpio 12 GPIO_ACTIVE_LOW>;
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};
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};
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};
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&pcie {
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status = "okay";
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};
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&nand {
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status = "okay";
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partitions {
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compatible = "fixed-partitions";
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#address-cells = <1>;
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#size-cells = <1>;
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partition@0 {
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reg = <0x00 0x100000>;
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label = "uboot";
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read-only;
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};
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partition@100000 {
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reg = <0x100000 0xff00000>;
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label = "ubi";
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volumes {
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ubi-volume-env1 {
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volname = "env1";
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nvmem-layout {
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compatible = "u-boot,env";
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ethaddr: ethaddr {
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#nvmem-cell-cells = <1>;
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};
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};
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};
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};
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};
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};
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};
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&gmac1 {
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label = "wan";
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phy-handle = <ðphy0>;
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nvmem-cells = <ðaddr 1>;
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nvmem-cell-names = "mac-address";
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status = "okay";
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};
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&i2c {
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status = "okay";
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};
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ðphy0 {
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/delete-property/ interrupts;
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};
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&state_default {
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gpio {
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groups = "uart2", "uart3";
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function = "gpio";
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};
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};
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&switch0 {
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ports {
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port@1 {
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label = "lan";
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nvmem-cells = <ðaddr 0>;
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nvmem-cell-names = "mac-address";
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status = "okay";
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};
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};
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};
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