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 "SPI Flash Core Interface support" 30 select SPI_MEM 31 help 32 Enable the SPI flash Core support. This will include basic 33 standard support for things like probing, read / write, and 34 erasing through cmd_sf interface. 35 36 If unsure, say N 37 38config SF_DEFAULT_BUS 39 int "SPI Flash default bus identifier" 40 depends on SPI_FLASH || DM_SPI_FLASH 41 default 0 42 help 43 The default bus may be provided by the platform 44 to handle the common case when only a single serial 45 flash is present on the system. 46 47config SF_DEFAULT_CS 48 int "SPI Flash default Chip-select" 49 depends on SPI_FLASH || DM_SPI_FLASH 50 default 0 51 help 52 The default chip select may be provided by the platform 53 to handle the common case when only a single serial 54 flash is present on the system. 55 56config SF_DEFAULT_MODE 57 hex "SPI Flash default mode (see include/spi.h)" 58 depends on SPI_FLASH || DM_SPI_FLASH 59 default 3 60 help 61 The default mode may be provided by the platform 62 to handle the common case when only a single serial 63 flash is present on the system. 64 Not used for boot with device tree; the SPI driver reads 65 speed and mode from platdata values computed from 66 available node. 67 68config SF_DEFAULT_SPEED 69 int "SPI Flash default speed in Hz" 70 depends on SPI_FLASH || DM_SPI_FLASH 71 default 1000000 72 help 73 The default speed may be provided by the platform 74 to handle the common case when only a single serial 75 flash is present on the system. 76 Not used for boot with device tree; the SPI driver reads 77 speed and mode from platdata values computed from 78 available node. 79 80if SPI_FLASH 81 82config SPI_FLASH_SFDP_SUPPORT 83 bool "SFDP table parsing support for SPI NOR flashes" 84 depends on !SPI_FLASH_BAR 85 help 86 Enable support for parsing and auto discovery of parameters for 87 SPI NOR flashes using Serial Flash Discoverable Parameters (SFDP) 88 tables as per JESD216 standard. 89 90config SPI_FLASH_BAR 91 bool "SPI flash Bank/Extended address register support" 92 help 93 Enable the SPI flash Bank/Extended address register support. 94 Bank/Extended address registers are used to access the flash 95 which has size > 16MiB in 3-byte addressing. 96 97config SF_DUAL_FLASH 98 bool "SPI DUAL flash memory support" 99 help 100 Enable this option to support two flash memories connected to a single 101 controller. Currently Xilinx Zynq qspi supports this. 102 103config SPI_FLASH_ATMEL 104 bool "Atmel SPI flash support" 105 help 106 Add support for various Atmel SPI flash chips (AT45xxx and AT25xxx) 107 108config SPI_FLASH_EON 109 bool "EON SPI flash support" 110 help 111 Add support for various EON SPI flash chips (EN25xxx) 112 113config SPI_FLASH_GIGADEVICE 114 bool "GigaDevice SPI flash support" 115 help 116 Add support for various GigaDevice SPI flash chips (GD25xxx) 117 118config SPI_FLASH_ISSI 119 bool "ISSI SPI flash support" 120 help 121 Add support for various ISSI SPI flash chips (ISxxx) 122 123config SPI_FLASH_MACRONIX 124 bool "Macronix SPI flash support" 125 help 126 Add support for various Macronix SPI flash chips (MX25Lxxx) 127 128config SPI_FLASH_SPANSION 129 bool "Spansion SPI flash support" 130 help 131 Add support for various Spansion SPI flash chips (S25FLxxx) 132 133config SPI_FLASH_STMICRO 134 bool "STMicro SPI flash support" 135 help 136 Add support for various STMicro SPI flash chips (M25Pxxx and N25Qxxx) 137 138config SPI_FLASH_SST 139 bool "SST SPI flash support" 140 help 141 Add support for various SST SPI flash chips (SST25xxx) 142 143config SPI_FLASH_WINBOND 144 bool "Winbond SPI flash support" 145 help 146 Add support for various Winbond SPI flash chips (W25xxx) 147 148config SPI_FLASH_XMC 149 bool "XMC SPI flash support" 150 help 151 Add support for various XMC (Wuhan Xinxin Semiconductor 152 Manufacturing Corp.) SPI flash chips (XM25xxx) 153 154config SPI_FLASH_XTX 155 bool "XTX SPI flash support" 156 help 157 Add support for various XTX (XTX Technology Limited) 158 SPI flash chips (XT25xxx). 159 160endif 161 162config SPI_FLASH_USE_4K_SECTORS 163 bool "Use small 4096 B erase sectors" 164 depends on SPI_FLASH 165 default y 166 help 167 Many flash memories support erasing small (4096 B) sectors. Depending 168 on the usage this feature may provide performance gain in comparison 169 to erasing whole blocks (32/64 KiB). 170 Changing a small part of the flash's contents is usually faster with 171 small sectors. On the other hand erasing should be faster when using 172 64 KiB block instead of 16 × 4 KiB sectors. 173 174 Please note that some tools/drivers/filesystems may not work with 175 4096 B erase size (e.g. UBIFS requires 15 KiB as a minimum). 176 177config SPI_FLASH_DATAFLASH 178 bool "AT45xxx DataFlash support" 179 depends on SPI_FLASH && DM_SPI_FLASH 180 help 181 Enable the access for SPI-flash-based AT45xxx DataFlash chips. 182 DataFlash is a kind of SPI flash. Most AT45 chips have two buffers 183 in each chip, which may be used for double buffered I/O; but this 184 driver doesn't (yet) use these for any kind of i/o overlap or prefetching. 185 186 Sometimes DataFlash is packaged in MMC-format cards, although the 187 MMC stack can't (yet?) distinguish between MMC and DataFlash 188 protocols during enumeration. 189 190 If unsure, say N 191 192config SPI_FLASH_MTD 193 bool "SPI Flash MTD support" 194 depends on SPI_FLASH 195 help 196 Enable the MTD support for spi flash layer, this adapter is for 197 translating mtd_read/mtd_write commands into spi_flash_read/write 198 commands. It is not intended to use it within sf_cmd or the SPI 199 flash subsystem. Such an adapter is needed for subsystems like 200 UBI which can only operate on top of the MTD layer. 201 202 If unsure, say N 203 204config SPL_SPI_FLASH_MTD 205 bool "SPI flash MTD support for SPL" 206 depends on SPI_FLASH 207 help 208 Enable the MTD support for the SPI flash layer in SPL. 209 210 If unsure, say N 211 212endmenu # menu "SPI Flash Support" 213