drivers/block/Kconfig

   1 config 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
  12 config 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
  22 config BLOCK_CACHE
  23         bool "Use block device cache"
  24         default n
  25         help
  26           This option enables a disk-block cache for all block devices.
  27           This is most useful when accessing filesystems under U-Boot since
  28           it will prevent repeated reads from directory structures and other
  29           filesystem data structures.