1 menu "SPI Flash Support"
4 bool "Enable Driver Model for SPI flash"
5 depends on DM && DM_SPI
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).
18 config SPI_FLASH_SANDBOX
19 bool "Support sandbox SPI flash device"
20 depends on SANDBOX && DM_SPI_FLASH
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.
29 bool "Legacy SPI Flash Interface support"
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.
38 bool "SPI flash Bank/Extended address register support"
41 Enable the SPI flash Bank/Extended address register support.
42 Bank/Extended address registers are used to access the flash
43 which has size > 16MiB in 3-byte addressing.
46 bool "SPI DUAL flash memory support"
49 Enable this option to support two flash memories connected to a single
50 controller. Currently Xilinx Zynq qspi supports this.
54 config SPI_FLASH_ATMEL
55 bool "Atmel SPI flash support"
57 Add support for various Atmel SPI flash chips (AT45xxx and AT25xxx)
60 bool "EON SPI flash support"
62 Add support for various EON SPI flash chips (EN25xxx)
64 config SPI_FLASH_GIGADEVICE
65 bool "GigaDevice SPI flash support"
67 Add support for various GigaDevice SPI flash chips (GD25xxx)
70 bool "ISSI SPI flash support"
72 Add support for various ISSI SPI flash chips (ISxxx)
74 config SPI_FLASH_MACRONIX
75 bool "Macronix SPI flash support"
77 Add support for various Macronix SPI flash chips (MX25Lxxx)
79 config SPI_FLASH_SPANSION
80 bool "Spansion SPI flash support"
82 Add support for various Spansion SPI flash chips (S25FLxxx)
84 config SPI_FLASH_STMICRO
85 bool "STMicro SPI flash support"
87 Add support for various STMicro SPI flash chips (M25Pxxx and N25Qxxx)
90 bool "SST SPI flash support"
92 Add support for various SST SPI flash chips (SST25xxx)
94 config SPI_FLASH_WINBOND
95 bool "Winbond SPI flash support"
97 Add support for various Winbond SPI flash chips (W25xxx)
101 config SPI_FLASH_USE_4K_SECTORS
102 bool "Use small 4096 B erase sectors"
106 Many flash memories support erasing small (4096 B) sectors. Depending
107 on the usage this feature may provide performance gain in comparison
108 to erasing whole blocks (32/64 KiB).
109 Changing a small part of the flash's contents is usually faster with
110 small sectors. On the other hand erasing should be faster when using
111 64 KiB block instead of 16 × 4 KiB sectors.
113 Please note that some tools/drivers/filesystems may not work with
114 4096 B erase size (e.g. UBIFS requires 15 KiB as a minimum).
116 config SPI_FLASH_DATAFLASH
117 bool "AT45xxx DataFlash support"
118 depends on SPI_FLASH && DM_SPI_FLASH
120 Enable the access for SPI-flash-based AT45xxx DataFlash chips.
121 DataFlash is a kind of SPI flash. Most AT45 chips have two buffers
122 in each chip, which may be used for double buffered I/O; but this
123 driver doesn't (yet) use these for any kind of i/o overlap or prefetching.
125 Sometimes DataFlash is packaged in MMC-format cards, although the
126 MMC stack can't (yet?) distinguish between MMC and DataFlash
127 protocols during enumeration.
132 bool "SPI Flash MTD support"
135 Enable the MTD support for spi flash layer, this adapter is for
136 translating mtd_read/mtd_write commands into spi_flash_read/write
137 commands. It is not intended to use it within sf_cmd or the SPI
138 flash subsystem. Such an adapter is needed for subsystems like
139 UBI which can only operate on top of the MTD layer.
143 endmenu # menu "SPI Flash Support"