Trying to run coreboot on apollo lake atom CPU.
I'm stopped at romstage - on call FspMemoryInit I get this message (from debug FSP):

 FitHeader signature was invalid.

As I understood - this mean that FSP can't validate FIT header in memory: "_FIT_  ". I have no ideas what going wrong. I'm doing all by guidlines and recomendations - but have this problem.
Also, what mean this coreboot out:
CBFS: Unmatched 'filename' at 'offset' ?

Thanks!