[coreboot] Coffeelake Graphics Problem

[cagatay bagci]

Hello all,I have a custom CFL board. I used Tianocore UEFI payload. It boots without problem on console and I can enter BIOS menu. I put appropriate vbt.bin file and added that path to config file, so VBT exists. However, I cannot get display output. I inspected debug log and it says "graphics hand-off block not found" in one line. I understand that FSP does not build "gEfiGraphicsInfoHobGuid". Do you have an idea why FSP does not produce that HOB?
In addition to that, by using FSP debug binary, I can see that FSP does not even enter PeiGraphicsEntryPoint. It somehow quits after "SerialIoInit() Start" and notifys Post PCI Enumeration.
Thanks,