UEFI Option ROM driver

Hi All,

I have problems with the my PCI OpRom device driver on some platforms.

Driver executing successfully on the DG41TX motherboard, but on the DH67BL and DH77EB driver does not loading from OpRom on the PCIe card (even entrypoint does not executing).

Boot process not freezing and UEFI Shell from USB pen loading successfully after platform initialization.

With "loadpcirom" command from UEFI shell my driver executing successfully on any platforms.

Maybe problem is platform policy?

Can the platform completely ignore UEFI OpRom drivers?

Thanks, Vladimir.