mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 15:37:23 +00:00
0417b8523c
We don't want boards to be able to change these. They can be handled as dependencies of options that need them, such as SPL_MMC. There is no point in enabling the block interface without any storage devices to create a block device. Hide both options from the 'menuconfig' display and deny their use in defconfig files. Signed-off-by: Simon Glass <sjg@chromium.org>
240 lines
7.9 KiB
Text
240 lines
7.9 KiB
Text
config BLK
|
|
bool # "Support block devices"
|
|
depends on DM
|
|
default y if MMC || USB || SCSI || NVME || IDE || AHCI || SATA
|
|
default y if EFI_MEDIA || VIRTIO_BLK || PVBLOCK
|
|
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 SPL_LEGACY_BLOCK
|
|
bool # "Enable Legacy Block Device"
|
|
depends on SPL && !DM_SPL
|
|
default y if SPL_MMC || SPL_USB_STORAGE || SCSI || NVME || IDE
|
|
default y if SPL_AHCI_PCI
|
|
help
|
|
Some devices require block support whether or not DM is enabled. This
|
|
is only supported in SPL. With this, the blk uclass is not used, but
|
|
instead a legacy implementation of block devices is used, with all
|
|
devices consisting of 'struct blk_desc' records.
|
|
|
|
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 VPL_BLK
|
|
bool "Support block devices in VPL"
|
|
depends on VPL_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"
|
|
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.
|
|
|
|
if IDE
|
|
|
|
config SYS_IDE_MAXBUS
|
|
hex "Maximumm number of IDE buses"
|
|
default 2
|
|
help
|
|
This is the number of IDE buses provided by the board. Each one
|
|
can have one or two devices. One is designated the master and the
|
|
other one the slave. It is not required to have one or both on any
|
|
controller.
|
|
|
|
config SYS_IDE_MAXDEVICE
|
|
hex "Maximum number of IDE devices"
|
|
default 2
|
|
help
|
|
This is the number of IDE devices which can be connected to the
|
|
board. Normally this is 2 * CONFIG_SYS_IDE_MAXBUS since up to two
|
|
devices can be connected to each bus. The number of devices actually
|
|
connected is determined by probing.
|
|
|
|
config SYS_ATA_BASE_ADDR
|
|
hex "Base address of IDE controller"
|
|
default 0
|
|
help
|
|
This is the address of the IDE controller, from which other addresses
|
|
are calculated. Each bus is at a fixed offset from this address,
|
|
so it assumed that they are in the same area of the I/O space or
|
|
memory.
|
|
|
|
config SYS_ATA_STRIDE
|
|
hex "IDE port stride"
|
|
default 0x1
|
|
help
|
|
This is the distance between each IDE register, in bytes. For an
|
|
8-bit controller this is typically 1, meaning that the registers
|
|
appear at consecutive bytes. If the value 2 two, that might indicate
|
|
a 16-bit register space.
|
|
|
|
config SYS_ATA_DATA_OFFSET
|
|
hex "Offset of the data register"
|
|
default 0x0
|
|
help
|
|
This is the offset of the controller's data register from the base
|
|
address of the controller. This is typically 0, but may be something
|
|
else if there are some other registers at the start of the
|
|
controller space.
|
|
|
|
config SYS_ATA_REG_OFFSET
|
|
hex "Offset of the register space"
|
|
default 0x0
|
|
help
|
|
This is the offset of the controller's 'register' space from the base
|
|
address of the controller. The data register (which is typically at
|
|
offset 0) has its own CONFIG, to deal with controllers where it is
|
|
somewhere else. Register 1 will be at this offset + 1, register 2 at
|
|
CONFIG_SYS_ATA_REG_OFFSET + 2, etc.
|
|
|
|
config SYS_ATA_ALT_OFFSET
|
|
hex "Offset of the alternative registers"
|
|
default 0x0
|
|
help
|
|
This is the offset of the controller's 'alternative' space from the
|
|
base address of the controller. This allows these registers to be
|
|
located separately from the data and register space.
|
|
|
|
config SYS_ATA_IDE0_OFFSET
|
|
hex "Offset of bus 0"
|
|
default 0x1f0
|
|
help
|
|
This is the start offset of bus 0 from the start of the
|
|
controller registers. All the other registers are calculated from
|
|
this address. using the above options. For x86 hardware this is often
|
|
0x1f0.
|
|
|
|
config SYS_ATA_IDE1_OFFSET
|
|
hex "Offset of bus 1"
|
|
default 0x170
|
|
help
|
|
This is the start offset of bus 1 from the start of the
|
|
controller registers. All the other registers are calculated from
|
|
this address. using the above options. For x86 hardware this is often
|
|
0x170.
|
|
|
|
config ATAPI
|
|
bool "Enable ATAPI support"
|
|
help
|
|
This enabled Advanced Technology Attachment Packet Interface (ATAPI),
|
|
a protocol that allows a greater variety of devices to be connected
|
|
to the IDE port than with plain ATA. It allows SCSI commands to be
|
|
sent across the bus, e.g. to support optical drives.
|
|
|
|
config IDE_RESET
|
|
bool "Support board-specific reset"
|
|
help
|
|
If this is defined, IDE Reset will be performed by calling the
|
|
function:
|
|
|
|
ide_set_reset(int reset)
|
|
|
|
where reset is 1 to assert reset and 0 to de-assert it. This function
|
|
must be defined in a board-specific file.
|
|
|
|
endif # IDE
|
|
|
|
config LBA48
|
|
bool "Enable LBA support for disks larger than 137GB"
|
|
help
|
|
Set this to enable support for disks larger than 137GB.
|
|
Also look at CONFIG_SYS_64BIT_LBA. Without both of these, LBA48
|
|
support uses 32bit variables and will 'only' support disks up to
|
|
2.1TB.
|
|
|
|
config SYS_64BIT_LBA
|
|
bool "Enable 64bit number of blocks on a block device"
|
|
help
|
|
Make the block subsystem use 64bit sector addresses, rather than the
|
|
default of 32bit.
|