1config SPI_FLASH 2 bool "Enable SPI Flash support" 3 help 4 Enable the legacy SPI flash support. This will include basic 5 standard support for things like probing, read / write, and 6 erasing through the MTD layer. 7 8 If unsure, say N 9 10config DM_SPI_FLASH 11 bool "Enable Driver Model for SPI flash" 12 depends on DM && DM_SPI 13 help 14 Enable driver model for SPI flash. This SPI flash interface 15 (spi_flash_probe(), spi_flash_write(), etc.) is then 16 implemented by the SPI flash uclass. There is one standard 17 SPI flash driver which knows how to probe most chips 18 supported by U-Boot. The uclass interface is defined in 19 include/spi_flash.h, but is currently fully compatible 20 with the old interface to avoid confusion and duplication 21 during the transition parent. SPI and SPI flash must be 22 enabled together (it is not possible to use driver model 23 for one and not the other). 24 25config SPI_FLASH_SANDBOX 26 bool "Support sandbox SPI flash device" 27 depends on SANDBOX && DM_SPI_FLASH 28 help 29 Since sandbox cannot access real devices, an emulation mechanism is 30 provided instead. Drivers can be connected up to the sandbox SPI 31 bus (see CONFIG_SANDBOX_SPI) and SPI traffic will be routed to this 32 device. Typically the contents of the emulated SPI flash device is 33 stored in a file on the host filesystem. 34