Hi,

 

We are developing coreboot for Apollo lake custom board.  

 

We would like to reduce the boot time. For this,

• Enabled “MRC training data save” in FSP2_0 using Binary configuration tool.

 

But we are receiving the following logs:

NVM Write Failed. Update is lost. If repeatedly encountered, clear GPP4 and try again

Saved MRC training data with status (0x80000007)

 

We would like to get clarification for the following:

1. Can we cache and save MRC training data for Apollo lake platform ?
2. Will it be done through CSE using HECI interface or through the SPI read/write operation in the NVRAM ?
3. Do we need to add Mrc.bin file with coreboot?  If yes, where can we get the same ?

 

Thanks & Regards,

Antony