| 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 HAVE_BLOCK_DEVICE |
| bool "Enable Legacy Block Device" |
| help |
| Some devices require block support whether or not DM is enabled |
| |
| config SPL_BLK |
| bool "Support block devices in SPL" |
| depends on SPL_DM && BLK |
| default y |
| 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 TPL_BLK |
| bool "Support block devices in TPL" |
| depends on TPL_DM && BLK |
| default y |
| 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" |
| depends on BLK |
| default y |
| 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 SPL_BLOCK_CACHE |
| bool "Use block device cache in SPL" |
| depends on SPL_BLK |
| default n |
| help |
| This option enables the disk-block cache in SPL |
| |
| config IDE |
| bool "Support IDE controllers" |
| select HAVE_BLOCK_DEVICE |
| 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. |
