We have a system that is based upon the Atom E3845 processor. It has been discovered that our firmware which is based upon the Firmware Support Package and integrated in u-boot has an issue with no video output on newer SOCs. A cross examination has shown that the manufacturers firmware which is instead UEFI based has video output on the same hardware in question. Has there been a change to the silicon that would render the FSP binary files no longer adequate? What documentation is available for writing a UEFI based firmware?
Thank you for contacting Intel Embedded Community.
We are not supporting Bay Trail family. anymore.
But you can check this document, maybe it helps for what you need.
Intel® Firmware Support Package for Intel® Atom™ Processor E3800 Product Family: Integration Guide