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Add support for Genexis Pulse EX400 / Inteno Pulse EX400. A branded
variant for the Finnish ISP DNA has already been added in fea2264d9fdd
(ramips: mt7621: Add DNA Valokuitu Plus EX400, 2023-07-31). This commit
adds support for the generic variants with Inteno and Genexis branding.
Inteno changed its name to Genexis and both brandings exist.
In terms of electronics, there is no difference between the DNA-branded
version and other brandings. LED markings on the case are different,
though. While the DNA-version has a "software-update" LED, the other
versions have a WPS LED. To reduce user confusion, create a separate
image.
Add the different device-tree with the different LED and rename things
to work the same way for both variants.
Specifications:
- Device: Genexis Pulse EX400 / Inteno Pulse EX400
- SoC: MT7621A
- Flash: 256 MB NAND
- RAM: 256 MB
- Ethernet: Built-in, 2 x 1 GbE
- Wifi: MT7603 2.4 GHz 2x2 MIMO, MT7615 5 GHz 4x4 MU-MIMO
- USB: 1x 2.0
- LEDs (GPIO): green/red status, green WPS
- LEDs (SX9512, unsupported): Broadband, Wi-Fi 2.4G, Wi-Fi 5G
- Buttons (GPIO): Reset
- Buttons (SX9512, unsupported): Wi-Fi 2.4G, Wi-Fi 5G, WPS
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, or from the U-Boot recovery 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.
Signed-off-by: Andreas Gnau <andreas.gnau@iopsys.eu>
Link: https://github.com/openwrt/openwrt/pull/17551
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>