config EFI_LOADER bool "Support running EFI Applications in U-Boot" depends on (ARM64 || ARM) && OF_LIBFDT default y help Select this option if you want to run EFI applications (like grub2) on top of U-Boot. If this option is enabled, U-Boot will expose EFI interfaces to a loaded EFI application, enabling it to reuse U-Boot's device drivers. config EFI_LOADER_BOUNCE_BUFFER bool "EFI Applications use bounce buffers for DMA operations" depends on EFI_LOADER && ARM64 default n help Some hardware does not support DMA to full 64bit addresses. For this hardware we can create a bounce buffer so that payloads don't have to worry about platform details.