| menu "SPI Flash Support" |
| |
| config DM_SPI_FLASH |
| bool "Enable Driver Model for SPI flash" |
| depends on DM && DM_SPI |
| help |
| Enable driver model for SPI flash. This SPI flash interface |
| (spi_flash_probe(), spi_flash_write(), etc.) is then |
| implemented by the SPI flash uclass. There is one standard |
| SPI flash driver which knows how to probe most chips |
| supported by U-Boot. The uclass interface is defined in |
| include/spi_flash.h, but is currently fully compatible |
| with the old interface to avoid confusion and duplication |
| during the transition parent. SPI and SPI flash must be |
| enabled together (it is not possible to use driver model |
| for one and not the other). |
| |
| config SPI_FLASH_SANDBOX |
| bool "Support sandbox SPI flash device" |
| depends on SANDBOX && DM_SPI_FLASH |
| help |
| Since sandbox cannot access real devices, an emulation mechanism is |
| provided instead. Drivers can be connected up to the sandbox SPI |
| bus (see CONFIG_SANDBOX_SPI) and SPI traffic will be routed to this |
| device. Typically the contents of the emulated SPI flash device is |
| stored in a file on the host filesystem. |
| |
| config SPI_FLASH |
| bool "Legacy SPI Flash Interface support" |
| help |
| Enable the legacy SPI flash support. This will include basic |
| standard support for things like probing, read / write, and |
| erasing through cmd_sf interface. |
| |
| If unsure, say N |
| |
| config SPI_FLASH_BAR |
| bool "SPI flash Bank/Extended address register support" |
| depends on SPI_FLASH |
| help |
| Enable the SPI flash Bank/Extended address register support. |
| Bank/Extended address registers are used to access the flash |
| which has size > 16MiB in 3-byte addressing. |
| |
| if SPI_FLASH |
| |
| config SPI_FLASH_ATMEL |
| bool "Atmel SPI flash support" |
| help |
| Add support for various Atmel SPI flash chips (AT45xxx and AT25xxx) |
| |
| config SPI_FLASH_EON |
| bool "EON SPI flash support" |
| help |
| Add support for various EON SPI flash chips (EN25xxx) |
| |
| config SPI_FLASH_GIGADEVICE |
| bool "GigaDevice SPI flash support" |
| help |
| Add support for various GigaDevice SPI flash chips (GD25xxx) |
| |
| config SPI_FLASH_MACRONIX |
| bool "Macronix SPI flash support" |
| help |
| Add support for various Macronix SPI flash chips (MX25Lxxx) |
| |
| config SPI_FLASH_SPANSION |
| bool "Spansion SPI flash support" |
| help |
| Add support for various Spansion SPI flash chips (S25FLxxx) |
| |
| config SPI_FLASH_STMICRO |
| bool "STMicro SPI flash support" |
| help |
| Add support for various STMicro SPI flash chips (M25Pxxx and N25Qxxx) |
| |
| config SPI_FLASH_SST |
| bool "SST SPI flash support" |
| help |
| Add support for various SST SPI flash chips (SST25xxx) |
| |
| config SPI_FLASH_WINBOND |
| bool "Winbond SPI flash support" |
| help |
| Add support for various Winbond SPI flash chips (W25xxx) |
| |
| endif |
| |
| config SPI_FLASH_USE_4K_SECTORS |
| bool "Use small 4096 B erase sectors" |
| depends on SPI_FLASH |
| default y |
| help |
| Many flash memories support erasing small (4096 B) sectors. Depending |
| on the usage this feature may provide performance gain in comparison |
| to erasing whole blocks (32/64 KiB). |
| Changing a small part of the flash's contents is usually faster with |
| small sectors. On the other hand erasing should be faster when using |
| 64 KiB block instead of 16 × 4 KiB sectors. |
| |
| Please note that some tools/drivers/filesystems may not work with |
| 4096 B erase size (e.g. UBIFS requires 15 KiB as a minimum). |
| |
| config SPI_FLASH_DATAFLASH |
| bool "AT45xxx DataFlash support" |
| depends on SPI_FLASH && DM_SPI_FLASH |
| help |
| Enable the access for SPI-flash-based AT45xxx DataFlash chips. |
| DataFlash is a kind of SPI flash. Most AT45 chips have two buffers |
| in each chip, which may be used for double buffered I/O; but this |
| driver doesn't (yet) use these for any kind of i/o overlap or prefetching. |
| |
| Sometimes DataFlash is packaged in MMC-format cards, although the |
| MMC stack can't (yet?) distinguish between MMC and DataFlash |
| protocols during enumeration. |
| |
| If unsure, say N |
| |
| config SPI_FLASH_MTD |
| bool "SPI Flash MTD support" |
| depends on SPI_FLASH |
| help |
| Enable the MTD support for spi flash layer, this adapter is for |
| translating mtd_read/mtd_write commands into spi_flash_read/write |
| commands. It is not intended to use it within sf_cmd or the SPI |
| flash subsystem. Such an adapter is needed for subsystems like |
| UBI which can only operate on top of the MTD layer. |
| |
| If unsure, say N |
| |
| endmenu # menu "SPI Flash Support" |
