Re: [coreboot] Minnowboard

[Michael Graichen]

Hey Daniel,

What type of Minnowboard do you use?

First thing is to make sure the microcode is right without that it will hang before giving any output.

Best regards
Michael

-------- Ursprüngliche Nachricht --------
Von: Zoran Stojsavljevic 
Datum: 21.03.18 13:23 (GMT+01:00)
An: Daniel Wagner 
Cc: coreboot 
Betreff: Re: [coreboot] Minnowboard

Hello Daniel,

You need to properly build Coreboot, integrating BYT-I (as I recall
minnow board) FSP, and the info about BYT-I FSP you can find here:
https://github.com/IntelFsp/FSP

Zoran
_______

On Wed, Mar 21, 2018 at 12:47 PM, Daniel Wagner  wrote:
> Hi,
>
> I would like to test my -rt kernels releases on the minnowboard. Though
> cyclictest always reports 2 to 4 ms spikes. It looks like that the
> original firmware is stealing those cycles. So my plan was to try out
> coreboot and see if my theory is correct or not.
>
> Now, I am struggling with getting anything working. All my attempts to
> bake a working binary have been completely fruitless. Not a single char
> on the serial port. If I would at least get something on the serial port
> I could find my way through the maze.
>
> I am confident that flashing the device is works correctly via my
> raspberry pi [2]. When I flash the original firmware, the device comes
> back to live again.
>
> Unfortunately, the documentation on how to configure and build coreboot
> a bit outdated [1]. My google-foo didn't help either.
>
> Could someone share his/her current config and also post the SHAs of
> coreboot? This would rule out that part. I am not sure if my binary
> blobs I extracted or downloaded are okay (fd, me, gbe, FSB).
>
> Thanks,
> Daniel
>
> [1] https://elinux.org/Minnowboard:MinnowMaxCoreboot
> [2]
> https://3mdeb.com/firmware/flashing-minnowboard-turbot-with-raspberry-pi-zer...