1 menu "SPI Flash Support" 2 3 config 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 18 config 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 28 config SPI_FLASH 29 bool "Legacy SPI Flash Interface support" 30 depends on SPI 31 select SPI_MEM 32 help 33 Enable the legacy SPI flash support. This will include basic 34 standard support for things like probing, read / write, and 35 erasing through cmd_sf interface. 36 37 If unsure, say N 38 39 config SF_DEFAULT_BUS 40 int "SPI Flash default bus identifier" 41 depends on SPI_FLASH || DM_SPI_FLASH 42 default 0 43 help 44 The default bus may be provided by the platform 45 to handle the common case when only a single serial 46 flash is present on the system. 47 48 config SF_DEFAULT_CS 49 int "SPI Flash default Chip-select" 50 depends on SPI_FLASH || DM_SPI_FLASH 51 default 0 52 help 53 The default chip select may be provided by the platform 54 to handle the common case when only a single serial 55 flash is present on the system. 56 57 config SF_DEFAULT_MODE 58 hex "SPI Flash default mode (see include/spi.h)" 59 depends on SPI_FLASH || DM_SPI_FLASH 60 default 3 61 help 62 The default mode may be provided by the platform 63 to handle the common case when only a single serial 64 flash is present on the system. 65 66 config SF_DEFAULT_SPEED 67 int "SPI Flash default speed in Hz" 68 depends on SPI_FLASH || DM_SPI_FLASH 69 default 1000000 70 help 71 The default speed may be provided by the platform 72 to handle the common case when only a single serial 73 flash is present on the system. 74 75 if SPI_FLASH 76 77 config SPI_FLASH_SFDP_SUPPORT 78 bool "SFDP table parsing support for SPI NOR flashes" 79 depends on !SPI_FLASH_BAR 80 help 81 Enable support for parsing and auto discovery of parameters for 82 SPI NOR flashes using Serial Flash Discoverable Parameters (SFDP) 83 tables as per JESD216 standard. 84 85 config SPI_FLASH_BAR 86 bool "SPI flash Bank/Extended address register support" 87 help 88 Enable the SPI flash Bank/Extended address register support. 89 Bank/Extended address registers are used to access the flash 90 which has size > 16MiB in 3-byte addressing. 91 92 config SF_DUAL_FLASH 93 bool "SPI DUAL flash memory support" 94 help 95 Enable this option to support two flash memories connected to a single 96 controller. Currently Xilinx Zynq qspi supports this. 97 98 config SPI_FLASH_ATMEL 99 bool "Atmel SPI flash support" 100 help 101 Add support for various Atmel SPI flash chips (AT45xxx and AT25xxx) 102 103 config SPI_FLASH_EON 104 bool "EON SPI flash support" 105 help 106 Add support for various EON SPI flash chips (EN25xxx) 107 108 config SPI_FLASH_GIGADEVICE 109 bool "GigaDevice SPI flash support" 110 help 111 Add support for various GigaDevice SPI flash chips (GD25xxx) 112 113 config SPI_FLASH_ISSI 114 bool "ISSI SPI flash support" 115 help 116 Add support for various ISSI SPI flash chips (ISxxx) 117 118 config SPI_FLASH_MACRONIX 119 bool "Macronix SPI flash support" 120 help 121 Add support for various Macronix SPI flash chips (MX25Lxxx) 122 123 config SPI_FLASH_SPANSION 124 bool "Spansion SPI flash support" 125 help 126 Add support for various Spansion SPI flash chips (S25FLxxx) 127 128 config SPI_FLASH_STMICRO 129 bool "STMicro SPI flash support" 130 help 131 Add support for various STMicro SPI flash chips (M25Pxxx and N25Qxxx) 132 133 config SPI_FLASH_SST 134 bool "SST SPI flash support" 135 help 136 Add support for various SST SPI flash chips (SST25xxx) 137 138 config SPI_FLASH_WINBOND 139 bool "Winbond SPI flash support" 140 help 141 Add support for various Winbond SPI flash chips (W25xxx) 142 143 config SPI_FLASH_XMC 144 bool "XMC SPI flash support" 145 help 146 Add support for various XMC (Wuhan Xinxin Semiconductor 147 Manufacturing Corp.) SPI flash chips (XM25xxx) 148 149 endif 150 151 config SPI_FLASH_USE_4K_SECTORS 152 bool "Use small 4096 B erase sectors" 153 depends on SPI_FLASH 154 default y 155 help 156 Many flash memories support erasing small (4096 B) sectors. Depending 157 on the usage this feature may provide performance gain in comparison 158 to erasing whole blocks (32/64 KiB). 159 Changing a small part of the flash's contents is usually faster with 160 small sectors. On the other hand erasing should be faster when using 161 64 KiB block instead of 16 × 4 KiB sectors. 162 163 Please note that some tools/drivers/filesystems may not work with 164 4096 B erase size (e.g. UBIFS requires 15 KiB as a minimum). 165 166 config SPI_FLASH_DATAFLASH 167 bool "AT45xxx DataFlash support" 168 depends on SPI_FLASH && DM_SPI_FLASH 169 help 170 Enable the access for SPI-flash-based AT45xxx DataFlash chips. 171 DataFlash is a kind of SPI flash. Most AT45 chips have two buffers 172 in each chip, which may be used for double buffered I/O; but this 173 driver doesn't (yet) use these for any kind of i/o overlap or prefetching. 174 175 Sometimes DataFlash is packaged in MMC-format cards, although the 176 MMC stack can't (yet?) distinguish between MMC and DataFlash 177 protocols during enumeration. 178 179 If unsure, say N 180 181 config SPI_FLASH_MTD 182 bool "SPI Flash MTD support" 183 depends on SPI_FLASH 184 help 185 Enable the MTD support for spi flash layer, this adapter is for 186 translating mtd_read/mtd_write commands into spi_flash_read/write 187 commands. It is not intended to use it within sf_cmd or the SPI 188 flash subsystem. Such an adapter is needed for subsystems like 189 UBI which can only operate on top of the MTD layer. 190 191 If unsure, say N 192 193 endmenu # menu "SPI Flash Support" 194