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improve install instructions for belkin rt3200

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This commit is contained in:
Daniel Barlow 2024-12-24 13:45:11 +00:00
parent f8a275d1a3
commit 67a1cd3718
1 changed files with 49 additions and 10 deletions
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59
devices/belkin-rt3200/default.nix
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@ -4,7 +4,8 @@
******************************
This device is based on a 64 bit Mediatek MT7622 ARM platform,
and is "work in progress" in Liminix.
and is mostly feature-complete in Liminix but as of Dec 2024
has seen very little actual use.
.. note:: The factory flash image contains ECC errors that make it
incompatible with Liminix: use the `OpenWrt
@ -25,7 +26,11 @@
Installation
============
Installation is currently a manual process.
Liminix on this device uses the UBI volume management system to
perform wear leveling on the flash. This is not set up from the
factory, so a one-time step is needed to prepare it before Liminix
can be installed.
Preparation
-----------
@ -33,7 +38,7 @@
To prepare the device for Liminix you first need to use the
`OpenWrt UBI Installer
<https://github.com/dangowrt/owrt-ubi-installer>`_ image to
rewrite the flash layout. You can do this in onw of two ways:
rewrite the flash layout. You can do this in one of two ways:
either follow the instructions to do it through the vendor web
interface, or you can drop to U-boot and use TFTP
@ -44,16 +49,50 @@
MT7622> tftpboot 0x42000000 openwrt-mediatek-mt7622-linksys_e8450-ubi-initramfs-recovery-installer.itb
MT7622> bootm 0x42000000
This will write the new flash layout and then boot into a
"recovery" OpenWrt installation. Once it's finished booting into
Linux you can safely reboot
This will write the new flash layout and then boot into a
"recovery" OpenWrt installation.
Installing Liminix
------------------
Building/installing Liminix
----------------
This is a manual process: you need a :ref:`serial <serial>` conection and TFTP : follow the instructions at :ref:`system-outputs-ubimage`
The default target for this device is ``outputs.ubimage`` which
makes a ubifs image suitable for use with :command:`ubiupdatevol`.
For a first-time installation the simplest way to achieve this is
using the OpenWrt recovery system that you installed in the
previous step. In this configuration the device assigns itself the
IP address 192.168.1.1/24 on its LAN ports and expects the
connected computer to have 192.168.1.254
'';
The `ubi0_7` device in these instructions is correct as of Dec
2024 (dangowrt/owrt-ubi-installer commit d79e7928). If you are
installing some time later, it is important to check the output
from :command:`ubinfo -a` and make sure you are updating the
"liminix" volume and not some other one which had been introduced
since I wrote this.
.. code-block:: console
$ nix-build -I liminix-config=./my-configuration.nix --arg device "import ./devices/belkin-rt3200" -A outputs.default
$ cat result/rootfs | ssh root@192.168.1.1 "cat > /tmp/rootfs"
$ ssh root@192.168.1.1
root@OpenWrt:~# ubimkvol /dev/ubi0 --name=liminix --maxavsize
root@OpenWrt:~# ubinfo -a
[...]
Volume ID: 7 (on ubi0)
Type: dynamic
Alignment: 1
Size: 851 LEBs (108056576 bytes, 103.0 MiB)
State: OK
Name: liminix
Character device major/minor: 250:8
root@OpenWrt:~# ubiupdatevol /dev/ubi0_7 /tmp/rootfs
For subsequent Liminix reinstalls, you don't need to repeat the
"Preparation" step and in fact should seek to avoid it if
possible. Updating volumes with :command:`ubiupdatevol` will
preserve the erase counters used for write levelling, so is
preferred over any kind of "factory" wipe which will reset them.
'';
system = {
crossSystem = {