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ramips: mt7621: Add DNA Valokuitu Plus EX400
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 <[email protected]>
[rmilecki: try NVMEM for MACs]
Signed-off-by: Rafał Miłecki <[email protected]>- Loading branch information
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target/linux/ramips/dts/mt7621_dna_valokuitu-plus-ex400.dts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,130 @@ | ||
| // SPDX-License-Identifier: GPL-2.0-or-later OR MIT | ||
|
|
||
| #include "mt7621.dtsi" | ||
|
|
||
| #include <dt-bindings/gpio/gpio.h> | ||
| #include <dt-bindings/input/input.h> | ||
| #include <dt-bindings/leds/common.h> | ||
|
|
||
| / { | ||
| compatible = "dna,valokuitu-plus-ex400", "mediatek,mt7621-soc"; | ||
| model = "DNA Valokuitu Plus EX400"; | ||
|
|
||
| aliases { | ||
| ethernet0 = &gmac0; | ||
| label-mac-device = &gmac0; | ||
| led-boot = &led_status_red; | ||
| led-failsafe = &led_status_red; | ||
| led-running = &led_status_green; | ||
| led-upgrade = &led_update_green; | ||
| }; | ||
|
|
||
| chosen { | ||
| bootargs-override = "console=ttyS0,115200 rootfstype=squashfs,jffs2"; | ||
| }; | ||
|
|
||
| keys { | ||
| compatible = "gpio-keys"; | ||
|
|
||
| reset { | ||
| label = "reset"; | ||
| gpios = <&gpio 18 GPIO_ACTIVE_LOW>; | ||
| linux,code = <KEY_RESTART>; | ||
| }; | ||
| }; | ||
|
|
||
| leds { | ||
| compatible = "gpio-leds"; | ||
|
|
||
| led_status_green: led-0 { | ||
| color = <LED_COLOR_ID_GREEN>; | ||
| function = LED_FUNCTION_STATUS; | ||
| gpios = <&gpio 8 GPIO_ACTIVE_LOW>; | ||
| }; | ||
|
|
||
| led_status_red: led-1 { | ||
| color = <LED_COLOR_ID_RED>; | ||
| function = LED_FUNCTION_STATUS; | ||
| gpios = <&gpio 11 GPIO_ACTIVE_HIGH>; | ||
| }; | ||
|
|
||
| led_update_green: led-2 { | ||
| color = <LED_COLOR_ID_GREEN>; | ||
| function = LED_FUNCTION_PROGRAMMING; | ||
| gpios = <&gpio 12 GPIO_ACTIVE_LOW>; | ||
| }; | ||
| }; | ||
| }; | ||
|
|
||
| &pcie { | ||
| status = "okay"; | ||
| }; | ||
|
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||
| &nand { | ||
| status = "okay"; | ||
|
|
||
| partitions { | ||
| compatible = "fixed-partitions"; | ||
| #address-cells = <1>; | ||
| #size-cells = <1>; | ||
|
|
||
| partition@0 { | ||
| reg = <0x00 0x100000>; | ||
| label = "uboot"; | ||
| read-only; | ||
| }; | ||
|
|
||
| partition@100000 { | ||
| reg = <0x100000 0xff00000>; | ||
| label = "ubi"; | ||
|
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||
| volumes { | ||
| ubi-volume-env1 { | ||
| volname = "env1"; | ||
|
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||
| nvmem-layout { | ||
| compatible = "u-boot,env"; | ||
|
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||
| ethaddr: ethaddr { | ||
| #nvmem-cell-cells = <1>; | ||
| }; | ||
| }; | ||
| }; | ||
| }; | ||
| }; | ||
| }; | ||
| }; | ||
|
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||
| &gmac1 { | ||
| label = "wan"; | ||
| phy-handle = <ðphy0>; | ||
| nvmem-cells = <ðaddr 1>; | ||
| nvmem-cell-names = "mac-address"; | ||
| status = "okay"; | ||
| }; | ||
|
|
||
| &i2c { | ||
| status = "okay"; | ||
| }; | ||
|
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||
| ðphy0 { | ||
| /delete-property/ interrupts; | ||
| }; | ||
|
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||
| &state_default { | ||
| gpio { | ||
| groups = "uart2", "uart3"; | ||
| function = "gpio"; | ||
| }; | ||
| }; | ||
|
|
||
| &switch0 { | ||
| ports { | ||
| port@1 { | ||
| label = "lan"; | ||
| nvmem-cells = <ðaddr 0>; | ||
| nvmem-cell-names = "mac-address"; | ||
| status = "okay"; | ||
| }; | ||
| }; | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| # | ||
| # Copyright (C) 2023 Mauri Sandberg | ||
| # | ||
|
|
||
| # The vendor UBI is split in volumes 0-3. Volumes 0 and 1 contain U-Boot | ||
| # environments env1 and env2, respectively. The vendor root file systems | ||
| # are in volumes 2 (rootfs_0) and 3 (rootfs_1). Drop the two roots and | ||
| # explicitly use rootfs_0 as a boot partition that contains the dtb and the | ||
| # OpenWrt kernel. This is because the vendor U-Boot expects to find them there. | ||
| # Then continue upgrade with the default method - a SquashFS rootfs will be | ||
| # installed and the rest of UBI will be used as an overlay. | ||
|
|
||
| # The 'kernel' inside the sysupgrage.tar is an UBIFS image that contains | ||
| # /boot/dtb and /boot/kernel. The 'root' is an OpenWrt SquashFS root | ||
|
|
||
| . /lib/functions.sh | ||
| . /lib/upgrade/nand.sh | ||
|
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| dna_do_upgrade () { | ||
| tar -xaf $1 | ||
|
|
||
| # get the size of the new bootfs | ||
| local _bootfs_size=$(wc -c < ./sysupgrade-dna_valokuitu-plus-ex400/kernel) | ||
| [ -n "$_bootfs_size" -a "$_bootfs_size" -gt "0" ] || nand_do_upgrade_failed | ||
|
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||
| # remove existing rootfses and recreate rootfs_0 | ||
| ubirmvol /dev/ubi0 --name=rootfs_0 > /dev/null 2>&1 | ||
| ubirmvol /dev/ubi0 --name=rootfs_1 > /dev/null 2>&1 | ||
| ubirmvol /dev/ubi0 --name=rootfs > /dev/null 2>&1 | ||
| ubirmvol /dev/ubi0 --name=rootfs_data > /dev/null 2>&1 | ||
| ubimkvol /dev/ubi0 --type=static --size=${_bootfs_size} --name=rootfs_0 | ||
|
|
||
| # update the rootfs_0 contents | ||
| local _kern_ubivol=$( nand_find_volume "ubi0" "rootfs_0" ) | ||
| ubiupdatevol /dev/${_kern_ubivol} sysupgrade-dna_valokuitu-plus-ex400/kernel | ||
|
|
||
| fw_setenv root_vol rootfs_0 | ||
| fw_setenv boot_cnt_primary 0 | ||
| fw_setenv boot_cnt_alt 0 | ||
|
|
||
| # proceed to upgrade the default way | ||
| CI_KERNPART=none | ||
| nand_do_upgrade "$1" | ||
| } |
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