Hi Keith,
Appreciate the undertaking. I have a Z77 Sabertooth which will be replaced
with a different system in the near future, so I would be willing to test
with a precompiled ROM. If the ROM would be publically available at one
point on Github or Gitlab where issues can be reported conveniently
similarly to what the Dasharo/3mdeb guys do that would be wonderful. Also
for the sake of being able to recover easily (without an RTE or CH341A)
from a no-POST situation I'd like to have the USB BIOS FlashBack feature
implemented *first* before doing any test. Michał Żygowski has
reverse-engineered this for the MSI Z690 boards (USB FlashBIOS) and it's
working great. I'm not an expert here, but I would assume that there are
possibly similarities in how this works across vendors?
--
Network Security Analyst
Technology Department
http://comicsanscriminal.com
http://comicsanscriminal.com
Buncombe County Schools
ComicSans Awareness Campaign
https://comicsanscriminal.com
On Fri, Dec 20, 2024 at 1:46 PM Keith Hui
buurin@gmail.com wrote:
> Hello,
>
> I recently got my hands on boardviews of many Asus P8x7x series
> mainboards, and some offshoots such as Z77-A and Sabertooth Z77, and
> have also found a way to extract VBT data and the USB port config out
> of the vendor firmware image (which isn't really a straight image, but
> what looks like an update capsule), allowing me to attempt something
> quite ambitious given I only have the P8Z77-M on hand: Bring coreboot
> to the entire family.
>
> Again because I only have the vendor firmware image and boardview to
> go by, I will only be able to put out an untested new board patch,
> hence I am calling for anyone with these boards, that aren't already
> in the tree, to help me test them, and to get things I can't get out
> of firmware image, such as HDA verbs and GPIO setup, by running
> autoport on your board.
>
> Additionally, if you have a P8Z77-V (Hello Bill!), please test this patch:
>
https://review.coreboot.org/c/coreboot/+/85413
> And if you have a P8Z77-M PRO, please test your serial port, and if
> changing
> it to use serial port A like P8Z77-M does, make the serial port work.
>
> Now, during my survey of the board family, I found that:
> 1. They link their power LEDs to only one of two GPIOs on the PCH: 8
> or 27. That's easily determined from the boardview.
> 2. Except for P8C WS which I can't get a boardview for, this family
> only uses one of two Nuvoton super I/Os: NCT5535D or NCT6779D. 6779 is
> well known, but I cannot find the datasheet for 5535, and the pinout
> for the closest thing I can find, NCT5532D, have the pins shifted by
> approximately 3 pins, and there may be more differences.
>
> Does anyone know anything about NCT5535D or can hook me up with a
> datasheet?
>
> Thanks
> Keith
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