+config BLK
+ bool "Support block devices"
+ depends on DM
+ default y if DM_MMC
+ help
+ Enable support for block devices, such as SCSI, MMC and USB
+ flash sticks. These provide a block-level interface which permits
+ reading, writing and (in some cases) erasing blocks. Block
+ devices often have a partition table which allows the device to
+ be partitioned into several areas, called 'partitions' in U-Boot.
+ A filesystem can be placed in each partition.
+
+config BLOCK_CACHE
+ bool "Use block device cache"
+ default n
+ help
+ This option enables a disk-block cache for all block devices.
+ This is most useful when accessing filesystems under U-Boot since
+ it will prevent repeated reads from directory structures and other
+ filesystem data structures.
+
+config IDE
+ bool "Support IDE controllers"
+ help
+ Enables support for IDE (Integrated Drive Electronics) hard drives.
+ This allows access to raw blocks and filesystems on an IDE drive
+ from U-Boot. See also CMD_IDE which provides an 'ide' command for
+ performing various IDE operations.