[coreboot] [RFC] board_status: Add serial log to `serial_console.txt`

David Hendricks dhendrix at google.com
Fri Jul 4 01:18:34 CEST 2014

Necromancing this thread...

Sage has a patch to *optionally* use a serial console log in
board_status.sh: http://review.coreboot.org/#/c/6094/

Earlier objections to such an approach seemed to stem from either:
- Desire to use cbmem console instead. A fine idea, but on some platforms
(especially those which use AGESA) a lot of information gets spit out to
the console before cbmem is available. Re-factoring to make cbmem init
happen earlier is unfeasible AFAICT.

- Avoid confusing cbmem console log and other logs. This can be easily
solved by using a different filename. I personally think it's best to only
upload one log (whichever is most useful) and avoid polluting the web UI
with redundant files. But I could live with multiple console logs if others
feel strongly.

Seeing as how only a small handful of people currently actually use this
utility anyway, I'm inclined to think it's best to make the utility more
useful for a major coreboot contributor get some more status reports


On Wed, Feb 19, 2014 at 3:14 PM, Kyösti Mälkki <kyosti.malkki at gmail.com>

> On 02/20/2014 12:56 AM, Vladimir 'φ-coder/phcoder' Serbinenko wrote:
>>> You do not get raminit debug output printed in ramstage.
>>> Unfortunately, the case of incompatible DIMMs seems to be common one
>>> with recent AGESA ports so information from romstage what DIMMs have
>>> worked is actually relevant.
>> Just read this data from registers and print it.
> Neither of us has probably looked closely what details we are missing from
> AGESA romstages. I very much doubt it would be just static register
> configuration on memory controllers that could be dumped afterwards.
> AMD has an amount of SMP init going on in romstage along with possibly
> multiple logical CPUs using CAR etc.

David Hendricks (dhendrix)
Systems Software Engineer, Google Inc.
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