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84d31b3b8f
Added SPI_FLASH_BAR entry on Kconfig with help description Signed-off-by: Jagan Teki <jteki@openedev.com>
73 lines
2.6 KiB
Plaintext
73 lines
2.6 KiB
Plaintext
menu "SPI Flash Support"
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config DM_SPI_FLASH
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bool "Enable Driver Model for SPI flash"
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depends on DM && DM_SPI
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help
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Enable driver model for SPI flash. This SPI flash interface
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(spi_flash_probe(), spi_flash_write(), etc.) is then
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implemented by the SPI flash uclass. There is one standard
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SPI flash driver which knows how to probe most chips
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supported by U-Boot. The uclass interface is defined in
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include/spi_flash.h, but is currently fully compatible
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with the old interface to avoid confusion and duplication
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during the transition parent. SPI and SPI flash must be
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enabled together (it is not possible to use driver model
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for one and not the other).
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config SPI_FLASH_SANDBOX
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bool "Support sandbox SPI flash device"
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depends on SANDBOX && DM_SPI_FLASH
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help
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Since sandbox cannot access real devices, an emulation mechanism is
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provided instead. Drivers can be connected up to the sandbox SPI
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bus (see CONFIG_SANDBOX_SPI) and SPI traffic will be routed to this
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device. Typically the contents of the emulated SPI flash device is
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stored in a file on the host filesystem.
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config SPI_FLASH
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bool "Legacy SPI Flash Interface support"
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help
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Enable the legacy SPI flash support. This will include basic
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standard support for things like probing, read / write, and
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erasing through cmd_sf interface.
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If unsure, say N
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config SPI_FLASH_BAR
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bool "SPI flash Bank/Extended address register support"
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depends on SPI_FLASH
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help
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Enable the SPI flash Bank/Extended address register support.
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Bank/Extended address registers are used to access the flash
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which has size > 16MiB in 3-byte addressing.
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config SPI_FLASH_DATAFLASH
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bool "AT45xxx DataFlash support"
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depends on SPI_FLASH && DM_SPI_FLASH
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help
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Enable the access for SPI-flash-based AT45xxx DataFlash chips.
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DataFlash is a kind of SPI flash. Most AT45 chips have two buffers
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in each chip, which may be used for double buffered I/O; but this
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driver doesn't (yet) use these for any kind of i/o overlap or prefetching.
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Sometimes DataFlash is packaged in MMC-format cards, although the
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MMC stack can't (yet?) distinguish between MMC and DataFlash
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protocols during enumeration.
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If unsure, say N
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config SPI_FLASH_MTD
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bool "SPI Flash MTD support"
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depends on SPI_FLASH
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help
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Enable the MTD support for spi flash layer, this adapter is for
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translating mtd_read/mtd_write commands into spi_flash_read/write
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commands. It is not intended to use it within sf_cmd or the SPI
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flash subsystem. Such an adapter is needed for subsystems like
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UBI which can only operate on top of the MTD layer.
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If unsure, say N
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endmenu # menu "SPI Flash Support"
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