The current bootloader does not support UEFI as it is too much data to fit into the EEPROM. The size of the EEPROM is 16mbit (2mbyte), if there is a UEFI implementation that could fit within this size limitation then it may be possible to implement a U-Boot UEFI implementation with ACPI tables, but this will not be default or standard and has yet to be officially investigated or implemented.
