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Date:      Thu, 5 Jan 2023 20:23:32 +0000 (UTC)
From:      "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>
To:        =?UTF-8?Q?Klaus_K=C3=BCchemann?= <maciphone2@googlemail.com>
Cc:        freebsd-arm@freebsd.org
Subject:   Re: (RPi) db> reboot -> cpu_reset failed
Message-ID:  <8o4s9914-sq84-90pq-no3o-59r18n5on14@yvfgf.mnoonqbm.arg>
In-Reply-To: <38B92299-2776-476D-A81F-7C8EB4D59A13@googlemail.com>
References:  <29q7q878-091-r17n-8r3n-o3n68p3646@mnoonqbm.arg> <F4435E57-1F90-454D-8E75-01DF50DD37DA@googlemail.com> <np4qps4-2o34-3n9n-q4s4-4931p4s7p13@yvfgf.mnoonqbm.arg> <38B92299-2776-476D-A81F-7C8EB4D59A13@googlemail.com>

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On Thu, 5 Jan 2023, Klaus Küchemann wrote:

> Hi Björn,
> ( ..I had a JTAG setup on the PI, but didn’t use it for some time..)
>
> yes that was a  "live“ boot example from today of the cm4(on orig. I/O-board),
> it hangs while initializing sdhci, while the boot partition is living on the emmc :
> —

Ok, I am just wondering given reboot works fine why reset in db>
wouldn't.  Given you have JTAG setup you can probably debug a lot better
than me but also you seem to have a different problem ...  too many
problems too short time *sigh*


>> Am 05.01.2023 um 19:48 schrieb Bjoern A. Zeeb <bzeeb-lists@lists.zabbadoz.net>:
>>
>> On Thu, 5 Jan 2023, Klaus Küchemann wrote:
>>
>> Hi Klaus,
>>
>>>> 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.
>>
>> does this mean you are running into the issue at boot as well or was
>> that just a (made up) example?
>>
>> --
>> Bjoern A. Zeeb                                                     r15:7
>
>
>
>

-- 
Bjoern A. Zeeb                                                     r15:7
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