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config BLK
bool "Support block devices"
depends on DM
default y if DM_MMC || DM_USB
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
help
This option enables the disk-block cache in SPL
config TPL_BLOCK_CACHE
bool "Use block device cache in TPL"
depends on TPL_BLK
help
This option enables the disk-block cache in TPL
config EFI_MEDIA
bool "Support EFI media drivers"
default y if EFI || SANDBOX
help
Enable this to support media devices on top of UEFI. This enables
just the uclass so you also need a specific driver to make this do
anything.
For sandbox there is a test driver.
if EFI_MEDIA
config EFI_MEDIA_SANDBOX
bool "Sandbox EFI media driver"
depends on SANDBOX
default y
help
Enables a simple sandbox media driver, used for testing just the
EFI_MEDIA uclass. It does not do anything useful, since sandbox does
not actually support running on top of UEFI.
config EFI_MEDIA_BLK
bool "EFI media block driver"
depends on EFI_APP
default y
help
Enables a block driver for providing access to UEFI devices. This
allows use of block devices detected by the underlying UEFI
implementation. With this it is possible to use filesystems on these
devices, for example.
endif # EFI_MEDIA
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.
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