Is CONFIG_USE_OPTION_TABLE option stable?

[Аладышев Константин]

Hello!

I'm trying to include CMOS variables use to my Coreboot, but when I enable
"CONFIG_USE_OPTION_TABLE" option strange things happen.

Windows stucks at boot logo and coreinfo payload displays very strange NVRAM
RTC data (completely incorrect time with year and second that increment
every second).

I checked this with upstream code on Google/Panther motherboard. This
motherboard uses "mc146818rtc" driver for RTC.

Without "CONFIG_USE_OPTION_TABLE" option coreinfo displays time correctly.
What can be the source of such thing?

Best Regards,
Aladyshev Konstantin

[Gergely Kiss]

Hi,

I saw very similar symptoms myself while porting coreboot to the ASUS
AM1I-A board.

I'm not sure about the reasons but this is likely caused by corrupted NVRAM
data. Make sure your board has a valid cmos.layout and a cmos.default file
(the latter one is optional) then build a fresh copy of coreboot and flash
it. Power off, remove the power cord and clear the CMOS memory using a
jumper on the mainboard. This ensures coreboot rewrites the CMOS memory
with defaults on next boot.

I did the same and it helped, the issue disappeared and never came back
later.

Hope it helps you, too!

Regards,
Gergely

On 24 January 2018 at 16:35, Аладышев Константин 
wrote:
> Hello!
>
> I'm trying to include CMOS variables use to my Coreboot, but when I enable
> "CONFIG_USE_OPTION_TABLE" option strange things happen.
>
> Windows stucks at boot logo and coreinfo payload displays very strange
> NVRAM
> RTC data (completely incorrect time with year and second that increment
> every second).
>
> I checked this with upstream code on Google/Panther motherboard. This
> motherboard uses "mc146818rtc" driver for RTC.
>
> Without "CONFIG_USE_OPTION_TABLE" option coreinfo displays time correctly.
> What can be the source of such thing?
>
> Best Regards,
> Aladyshev Konstantin