1config BLK 2 bool "Support block devices" 3 depends on DM 4 help 5 Enable support for block devices, such as SCSI, MMC and USB 6 flash sticks. These provide a block-level interface which permits 7 reading, writing and (in some cases) erasing blocks. Block 8 devices often have a partition table which allows the device to 9 be partitioned into several areas, called 'partitions' in U-Boot. 10 A filesystem can be placed in each partition. 11 12config DISK 13 bool "Support disk controllers with driver model" 14 depends on DM 15 default y if DM 16 help 17 This enables a uclass for disk controllers in U-Boot. Various driver 18 types can use this, such as AHCI/SATA. It does not provide any standard 19 operations at present. The block device interface has not been converted 20 to driver model. 21