[coreboot] MRC in coreboot

Antony AbeePrakash X V AntonyAbee.PrakashXV at LntTechservices.com
Wed Sep 5 15:00:48 CEST 2018


We are developing coreboot for Apollo lake custom board.  MRC training data save is enabled in FSP using Binary configuration tool.

But we are getting logs like,

No MRC cache found.
MRC SeCUmaSize memory size from SeC ... 0
MRC Parameters not valid. Status is Success
MRC:CpuMemoryTest Successful!
Saving MRC data using CSE through HECI interface
Try to find MRC training data HOB.
No MRC training data found, perform data save via HECI.
Saved MRC training data with status (0x80000003)

It seems that MRC data is not found and saved. Also I found that there are options to add MRC file path and mrc.bin in menuconfig. The only option I have is save cached MRC settings.

What this mrc.bin will do?
How to add the mrc.bin in coreboot?

Please explain on this.

Thanks & Regards,

L&T Technology Services Ltd


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