2 bool "Support block devices"
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.
14 bool "Support SCSI controllers"
16 This enables support for SCSI (Small Computer System Interface),
17 a parallel interface widely used with storage peripherals such as
18 hard drives and optical drives. The SCSI standards define physical
19 interfaces as well as protocols for controlling devices and
23 bool "Support SCSI controllers with driver model"
26 This option enables the SCSI (Small Computer System Interface) uclass
27 which supports SCSI and SATA HDDs. For every device configuration
28 (IDs/LUNs) a block device is created with RAW read/write and
32 bool "Use block device cache"
35 This option enables a disk-block cache for all block devices.
36 This is most useful when accessing filesystems under U-Boot since
37 it will prevent repeated reads from directory structures and other
38 filesystem data structures.
41 bool "Support IDE controllers"
43 Enables support for IDE (Integrated Drive Electronics) hard drives.
44 This allows access to raw blocks and filesystems on an IDE drive
45 from U-Boot. See also CMD_IDE which provides an 'ide' command for
46 performing various IDE operations.