I am trying to configure coreboot and fsp for Intel Tigerlake Board.

I am facing the following issues:

While building coreboot, in the menuconfig command, in mainboard section, if the ON BOARD EC is selected as INTEL EC, when make command is given, it is giving "Makefile:215" error. 

If the ON BOARD EC is selected as Chrome EC, then only the make is successful. But it is displaying the following warning: "coreboot has been built without Intel Firmware Descriptor. . . . "

The mainboard vendor and model are selected as Intel and Tigerlake UP3 RVP respectively.

Can you please help in solving this issue?

It would be of great help if you could explain how to build coreboot and fsp for Tigerlake Board.

Thanking you in anticipation.

Thanks and Regards,

Renuka