| 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" |