blob: 80eea84dc29731c96a48a2fd8814cd511375806b [file] [log] [blame]
Simon Glass09d71aa2016-02-29 15:25:55 -07001config 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
Simon Glassa2196392016-05-01 11:35:52 -060012config AHCI
13 bool "Support SATA controllers with driver model"
Simon Glasse3b5f042016-01-17 16:11:34 -070014 depends on DM
Simon Glasse3b5f042016-01-17 16:11:34 -070015 help
16 This enables a uclass for disk controllers in U-Boot. Various driver
17 types can use this, such as AHCI/SATA. It does not provide any standard
18 operations at present. The block device interface has not been converted
19 to driver model.
Eric Nelsone40cf342016-03-28 10:05:44 -070020
21config BLOCK_CACHE
22 bool "Use block device cache"
23 default n
24 help
25 This option enables a disk-block cache for all block devices.
26 This is most useful when accessing filesystems under U-Boot since
27 it will prevent repeated reads from directory structures and other
28 filesystem data structures.