Re: RW_MRC_CACHE always displays needs update and boot time is more

[Moorthi M.s]

Hi Paul,
> Thanks for your reply.
>
> I figured out the issue.
>
> The ME CPU replayed option is printing as YES, and this forces the MRC
> training on each reset.
>
> Updated the ME firmware, and the issue was solved.
>
> Regards,
> Moorthi S
> On Wed, Jul 31, 2024, 12:02 Paul Menzel  wrote:
> > Dear Moorthi,
> >
> > Welcome to coreboot.
> >
> > Am 31.07.24 um 07:45 schrieb Moorthi M.s:
> > > I am developing coreboot (ver 4.17) along with UEFI payload for a custom
> > > board derived from CFL H RVP11 CRB.
> > >
> > > I included the CACHE_MRC_SETTINGS to reduce the boot time on subsequent
> > > power on.
> > >
> > > But the time was not reducing and on every power on, around 18 seconds
> >
> > are
> > > taking between post code 0x92 (Ram Init) and 0x98 (Ram Init Exit). And
> > > always prints as " MRC: cache data 'RW_MRC_CACHE' needs update".
> > >
> > > Because of this coreboot takes around 45 secs to boot.
> > >
> > > Why every time the MRC cache data is changing? Why the processor is not
> > > using the MRC cached data?
> >
> > Without knowing the code you are using, nobody knows. Did you dump the
> > cache data to compare?
> > > Is there any other configurations needs to be done?
> >
> > Unfortunately, you did not provide enough information to answer your
> > question. Please provide at least your configuration and the verbose
> > logs. Best would be to upload your code (and the schematics).
> >
> > Also, why do you use coreboot 4.17? 24.05 is the latest release.
> >
> > Kind regards,
> >
> > Paul
> >
> > PS: Just to mention it, there are coreboot consultants [1], that might
> > save you some time in the end.