think

THOUGHTS.txt

@@ -6565,6 +6565,72 @@ use status and in fact there isn't one for reserved-memory
 we could use global config to enable pstore_msg and check it in
 the device module to enable the needed hw support
 
+Tue Dec 17 23:39:28 GMT 2024
 
+I think we can just stick a tee in the fallback logger pipeline that
+writes to /dev/pmsg0
 
-00PA727 00PA735
+Need to check it's a circular buffer
+
+do we want to do anything about recovering the log on boot?
+- we could just copy it to /run/log
+- if we have backfilling for shipped logs (we don't yet)
+  then we might want to ship it - but that may result in duplicate
+  logs if some of it was shipped before the crash
+
+perhaps we should truncate pmsg0 on orderly shutdown? or maybe it's
+good to see the late shutdown logs.
+
+Thu Dec 19 13:40:39 GMT 2024
+
+although we have PSTORE_foo in the omnia kconfig, I think this might
+be just because I copied it from RT3200
+
+Thu Dec 19 14:15:43 GMT 2024
+
+Omnia is not in ci.nix, and it's not trivial to add it because there
+is no output in the ci.nix configuration that makes sense for omnia.
+
+... OK, fixed by adding system-configuration as an independent module
+and importing in device config
+
+Thu Dec 19 21:59:47 GMT 2024
+
+The build-system shell script in outputs.systemConfiguration
+is ugly and requires we do bad things to avoid sucking build
+system stuff into the config
+
+I propose we make it a separate derivation.
+
+But first maybe we could improve some names
+
+Sun Dec 22 14:23:02 GMT 2024
+
+MT7622> echo $boot_default
+if env exists flag_recover ; then else run bootcmd ; fi ; run boot_recovery ; setenv replacevol 1 ; run boot_tftp_for
+ever
+MT7622> echo $bootcmd
+if pstore check ; then run boot_recovery ; else run boot_ubi ; fi
+MT7622> echo $boot_ubi
+ubi part ubi && run boot_production ; run boot_recovery
+MT7622> echo $boot_production
+led $bootled_pwr on ; run ubi_read_production && bootm $loadaddr#$bootconf ; led $bootled_pwr off
+MT7622> echo $ubi_read_production
+ubi read $loadaddr fit && iminfo $loadaddr && run ubi_prepare_rootfs
+MT7622> echo $ubi_prepare_rootfs
+if ubi check rootfs_data ; then else if env exists rootfs_data_max ; then ubi create rootfs_data $rootfs_data_max dynamic || ubi create rootfs_data - dynamic ; else ubi create rootfs_data - dynamic ; fi ; fi
+MT7622> echo $bootconf
+config-1
+MT7622> run boot_ubi
+UBI partition 'ubi' already selected
+No size specified -> Using max size (126976)
+Read 126976 bytes from volume fit to 0000000048000000
+
+## Checking Image at 48000000 ...
+Unknown image format!
+No size specified -> Using max size (7491584)
+Read 7491584 bytes from volume recovery to 0000000048000000
+## Loading kernel from FIT Image at 48000000 ...
+   Using 'config-1' configuration
+   Trying 'kernel-1' kernel subimage
+     Description:  ARM64 OpenWrt Linux-6.6.45