Enable UEFI for RPB linux?

Before flash rpb latest , Do I need to do something with my board to enable UEFI or Can I just flash rpb ?

So, the answer is, Yes I do need to enable uefi before using rpb linux.
Can you confirm ?

yes, you have to install uefi

Currently, uefi is the only alternative to the obfuscated and overengineered booting through fastboot, because there is no traditional bootloader like u-boot available for hikey960.