-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Somebody in the thread at some point said: | 2009/3/5 Timo Juhani Lindfors <[email protected]>: |> I added a patch to http://docs.openmoko.org/trac/ticket//2135 that |> logs all kernel messages to RAM and retrieves them after |> reboot. Together with a watchdog this has been very useful for my |> limited kernel debugging needs. | | Wow this is cool stuff... Maybe I'll give it a try. However I don't | understand yet, how the RAM survives a battery+usb removal (necessary, | as the phone doesn't shutdown on power-button and I have no other | access...)? | | Could you please elaborate a bit on this!?
That's what he meant by watchdog, it'd reset the thing if it froze; you can select to reset after panic as well. If that's not enough, this is a very interesting article about DRAM rentention without refresh or power: http://citp.princeton.edu/pub/coldboot.pdf In the end when we have a backup rootfs / menu rootfs that's working, it would be cool if Qi can show errors or previous boot failure dumps like tis by starting the backup fs and let people read, scroll through or save the errors. - -Andy -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iEYEARECAAYFAkmv+qUACgkQOjLpvpq7dMqk/QCeO6MpXtxPug6POCE1bZ4obAyQ Wx8AoIs3CizoGgQnv14ekiezAQGbz2Rr =PqVb -----END PGP SIGNATURE-----
