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rt3200: replace bootcmd variable

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the default is to boot to recovery if there's anything in pstore, but
this doesn't interact well with persstent logging
This commit is contained in:
Daniel Barlow 2025-01-01 11:56:54 +00:00
parent 28d39cd66d
commit 3af9e86624
1 changed files with 17 additions and 8 deletions
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25
devices/belkin-rt3200/default.nix
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@ -86,16 +86,25 @@
Name: liminix
Character device major/minor: 250:8
root@OpenWrt:~# ubiupdatevol /dev/ubi0_7 /tmp/rootfs
root@OpenWrt:~# fw_setenv orig_boot_production $(fw_printenv boot_production | sed -E 's/.+?=//')
To make the new system bootable we also need to change some U-Boot variables.
``boot_production`` needs to mount the filesystem and boot the FIT image
found there, and :code:`bootcmd` needs to be told _not_ to boot the rescue
image if there are records in pstore, because that interferes with
``config.log.persistent``
root@OpenWrt:~# fw_setenv orig_boot_production $(fw_printenv -n boot_production)
root@OpenWrt:~# fw_setenv orig_bootcmd $(fw_printenv -n bootcmd)
root@OpenWrt:~# fw_setenv boot_production 'led $bootled_pwr on ; ubifsmount ubi0:liminix && ubifsload ''${loadaddr} boot/fit && bootm ''${loadaddr}'
root@OpenWrt:~# fw_setenv bootcmd 'run boot_ubi'
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.
'';
For subsequent Liminix reinstalls, just run the
:command:`ubiupdatevol` command again. You don't need to repeat
the "Preparation" step and in fact should seek to avoid it if
possible, as it will reset the erase counters used for write
levelling. Using UBI-aware tools is therefore preferred over any
kind of "factory" wipe which will reset them.
'';
system = {
crossSystem = {