# # IOMMU devices # menu "IOMMU device drivers" config IOMMU bool "Enable Driver Model for IOMMU drivers" depends on DM help Enable driver model for IOMMU devices. An IOMMU maps device virtiual memory addresses to physical addresses. Devices that sit behind an IOMMU can typically only access physical memory if the IOMMU has been programmed to allow access to that memory. config APPLE_DART bool "Apple DART support" depends on IOMMU && ARCH_APPLE default y help Enable support for the DART on Apple SoCs. The DART is Apple's IOMMU implementation. The driver performs the necessary configuration to put the DART into bypass mode such that it can be used transparently by U-Boot. endmenu