Re: (RPi) db> reboot -> cpu_reset failed

In reply to: Bjoern A. Zeeb: "(RPi) db> reboot -> cpu_reset failed"
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From: Klaus_Küchemann <maciphone2_at_googlemail.com>
Date: Thu, 05 Jan 2023 18:01:11 UTC


> Am 05.01.2023 um 17:37 schrieb Bjoern A. Zeeb <bzeeb-lists@lists.zabbadoz.net>:
> 
> Hi,
> 
> given I currently find myself debugging more PIs again, what is needed
> to be able to reset from the db> prompt?
> 
> Currently I get "cpu_reset failed" when trying.
> 
> Needing remote hands or an OOB PDU to cycle the PI is not satisfying.
> 
> /bz
> 
> -- 
> Bjoern A. Zeeb                                                     r15:7
> 


you even cannot be sure to reach the ddb prompt at panic, like here :

--
..
KDB: stack backtrace:
..
#14 0xffff0000000008b4 at virtdone+0x78
Uptime: 1s
--
..and good night Pi ..

halt/resume of CPU is more promising by setting up a JTAG controller.

-
Regards
K.