Intel Extensible Firmware Interface - Manual (Page 838)

Extensible Firmware Interface Specification
19-64 12/01/02 Version 1.10
Description
The EFI EBC protocol provides services to load and execute EBC images, which will typically be
loaded into option ROMs.The image loader will load the EBC image, perform standard
relocations, and invoke the
CreateThunk() service to create a thunk for the EBC image’s entry
point.The image can then be run using the standard EFI start image services.