1menu "SPI Flash Support" 2 3config DM_SPI_FLASH 4 bool "Enable Driver Model for SPI flash" 5 depends on DM && DM_SPI 6 help 7 Enable driver model for SPI flash. This SPI flash interface 8 (spi_flash_probe(), spi_flash_write(), etc.) is then 9 implemented by the SPI flash uclass. There is one standard 10 SPI flash driver which knows how to probe most chips 11 supported by U-Boot. The uclass interface is defined in 12 include/spi_flash.h, but is currently fully compatible 13 with the old interface to avoid confusion and duplication 14 during the transition parent. SPI and SPI flash must be 15 enabled together (it is not possible to use driver model 16 for one and not the other). 17 18config SPI_FLASH_SANDBOX 19 bool "Support sandbox SPI flash device" 20 depends on SANDBOX && DM_SPI_FLASH 21 help 22 Since sandbox cannot access real devices, an emulation mechanism is 23 provided instead. Drivers can be connected up to the sandbox SPI 24 bus (see CONFIG_SANDBOX_SPI) and SPI traffic will be routed to this 25 device. Typically the contents of the emulated SPI flash device is 26 stored in a file on the host filesystem. 27 28config SPI_FLASH 29 bool "Legacy SPI Flash Interface support" 30 help 31 Enable the legacy SPI flash support. This will include basic 32 standard support for things like probing, read / write, and 33 erasing through cmd_sf interface. 34 35 If unsure, say N 36 37if SPI_FLASH 38 39config SPI_FLASH_SFDP_SUPPORT 40 bool "SFDP table parsing support for SPI NOR flashes" 41 depends on !SPI_FLASH_BAR 42 help 43 Enable support for parsing and auto discovery of parameters for 44 SPI NOR flashes using Serial Flash Discoverable Parameters (SFDP) 45 tables as per JESD216 standard. 46 47config SPI_FLASH_BAR 48 bool "SPI flash Bank/Extended address register support" 49 help 50 Enable the SPI flash Bank/Extended address register support. 51 Bank/Extended address registers are used to access the flash 52 which has size > 16MiB in 3-byte addressing. 53 54config SF_DUAL_FLASH 55 bool "SPI DUAL flash memory support" 56 help 57 Enable this option to support two flash memories connected to a single 58 controller. Currently Xilinx Zynq qspi supports this. 59 60config SPI_FLASH_ATMEL 61 bool "Atmel SPI flash support" 62 help 63 Add support for various Atmel SPI flash chips (AT45xxx and AT25xxx) 64 65config SPI_FLASH_EON 66 bool "EON SPI flash support" 67 help 68 Add support for various EON SPI flash chips (EN25xxx) 69 70config SPI_FLASH_GIGADEVICE 71 bool "GigaDevice SPI flash support" 72 help 73 Add support for various GigaDevice SPI flash chips (GD25xxx) 74 75config SPI_FLASH_ISSI 76 bool "ISSI SPI flash support" 77 help 78 Add support for various ISSI SPI flash chips (ISxxx) 79 80config SPI_FLASH_MACRONIX 81 bool "Macronix SPI flash support" 82 help 83 Add support for various Macronix SPI flash chips (MX25Lxxx) 84 85config SPI_FLASH_SPANSION 86 bool "Spansion SPI flash support" 87 help 88 Add support for various Spansion SPI flash chips (S25FLxxx) 89 90config SPI_FLASH_STMICRO 91 bool "STMicro SPI flash support" 92 help 93 Add support for various STMicro SPI flash chips (M25Pxxx and N25Qxxx) 94 95config SPI_FLASH_SST 96 bool "SST SPI flash support" 97 help 98 Add support for various SST SPI flash chips (SST25xxx) 99 100config SPI_FLASH_WINBOND 101 bool "Winbond SPI flash support" 102 help 103 Add support for various Winbond SPI flash chips (W25xxx) 104 105config SPI_FLASH_XMC 106 bool "XMC SPI flash support" 107 help 108 Add support for various XMC (Wuhan Xinxin Semiconductor 109 Manufacturing Corp.) SPI flash chips (XM25xxx) 110 111endif 112 113config SPI_FLASH_USE_4K_SECTORS 114 bool "Use small 4096 B erase sectors" 115 depends on SPI_FLASH 116 default y 117 help 118 Many flash memories support erasing small (4096 B) sectors. Depending 119 on the usage this feature may provide performance gain in comparison 120 to erasing whole blocks (32/64 KiB). 121 Changing a small part of the flash's contents is usually faster with 122 small sectors. On the other hand erasing should be faster when using 123 64 KiB block instead of 16 × 4 KiB sectors. 124 125 Please note that some tools/drivers/filesystems may not work with 126 4096 B erase size (e.g. UBIFS requires 15 KiB as a minimum). 127 128config SPI_FLASH_DATAFLASH 129 bool "AT45xxx DataFlash support" 130 depends on SPI_FLASH && DM_SPI_FLASH 131 help 132 Enable the access for SPI-flash-based AT45xxx DataFlash chips. 133 DataFlash is a kind of SPI flash. Most AT45 chips have two buffers 134 in each chip, which may be used for double buffered I/O; but this 135 driver doesn't (yet) use these for any kind of i/o overlap or prefetching. 136 137 Sometimes DataFlash is packaged in MMC-format cards, although the 138 MMC stack can't (yet?) distinguish between MMC and DataFlash 139 protocols during enumeration. 140 141 If unsure, say N 142 143config SPI_FLASH_MTD 144 bool "SPI Flash MTD support" 145 depends on SPI_FLASH 146 help 147 Enable the MTD support for spi flash layer, this adapter is for 148 translating mtd_read/mtd_write commands into spi_flash_read/write 149 commands. It is not intended to use it within sf_cmd or the SPI 150 flash subsystem. Such an adapter is needed for subsystems like 151 UBI which can only operate on top of the MTD layer. 152 153 If unsure, say N 154 155endmenu # menu "SPI Flash Support" 156