1config BLK
2	bool "Support block devices"
3	depends on DM
4	default y if DM_MMC
5	help
6	  Enable support for block devices, such as SCSI, MMC and USB
7	  flash sticks. These provide a block-level interface which permits
8	  reading, writing and (in some cases) erasing blocks. Block
9	  devices often have a partition table which allows the device to
10	  be partitioned into several areas, called 'partitions' in U-Boot.
11	  A filesystem can be placed in each partition.
12
13config HAVE_BLOCK_DEVICE
14	bool "Enable Legacy Block Device"
15	help
16	  Some devices require block support whether or not DM is enabled
17
18config SPL_BLK
19	bool "Support block devices in SPL"
20	depends on SPL_DM && BLK
21	default y
22	help
23	  Enable support for block devices, such as SCSI, MMC and USB
24	  flash sticks. These provide a block-level interface which permits
25	  reading, writing and (in some cases) erasing blocks. Block
26	  devices often have a partition table which allows the device to
27	  be partitioned into several areas, called 'partitions' in U-Boot.
28	  A filesystem can be placed in each partition.
29
30config TPL_BLK
31	bool "Support block devices in TPL"
32	depends on TPL_DM && BLK
33	default y
34	help
35	  Enable support for block devices, such as SCSI, MMC and USB
36	  flash sticks. These provide a block-level interface which permits
37	  reading, writing and (in some cases) erasing blocks. Block
38	  devices often have a partition table which allows the device to
39	  be partitioned into several areas, called 'partitions' in U-Boot.
40	  A filesystem can be placed in each partition.
41
42config BLOCK_CACHE
43	bool "Use block device cache"
44	depends on BLK
45	default y
46	help
47	  This option enables a disk-block cache for all block devices.
48	  This is most useful when accessing filesystems under U-Boot since
49	  it will prevent repeated reads from directory structures and other
50	  filesystem data structures.
51
52config SPL_BLOCK_CACHE
53	bool "Use block device cache in SPL"
54	depends on SPL_BLK
55	default n
56	help
57	  This option enables the disk-block cache in SPL
58
59config TPL_BLOCK_CACHE
60	bool "Use block device cache in TPL"
61	depends on TPL_BLK
62	default n
63	help
64	  This option enables the disk-block cache in TPL
65
66config IDE
67	bool "Support IDE controllers"
68	select HAVE_BLOCK_DEVICE
69	help
70	  Enables support for IDE (Integrated Drive Electronics) hard drives.
71	  This allows access to raw blocks and filesystems on an IDE drive
72	  from U-Boot. See also CMD_IDE which provides an 'ide' command for
73	  performing various IDE operations.
74