xref: /openbmc/u-boot/drivers/mtd/spi/Kconfig (revision 66dae3bb)
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
37config SPI_FLASH_BAR
38	bool "SPI flash Bank/Extended address register support"
39	depends on SPI_FLASH
40	help
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.
44
45config SF_DUAL_FLASH
46	bool "SPI DUAL flash memory support"
47	depends on SPI_FLASH
48	help
49	  Enable this option to support two flash memories connected to a single
50	  controller. Currently Xilinx Zynq qspi supports this.
51
52if SPI_FLASH
53
54config SPI_FLASH_ATMEL
55	bool "Atmel SPI flash support"
56	help
57	  Add support for various Atmel SPI flash chips (AT45xxx and AT25xxx)
58
59config SPI_FLASH_EON
60	bool "EON SPI flash support"
61	help
62	  Add support for various EON SPI flash chips (EN25xxx)
63
64config SPI_FLASH_GIGADEVICE
65	bool "GigaDevice SPI flash support"
66	help
67	  Add support for various GigaDevice SPI flash chips (GD25xxx)
68
69config SPI_FLASH_MACRONIX
70	bool "Macronix SPI flash support"
71	help
72	  Add support for various Macronix SPI flash chips (MX25Lxxx)
73
74config SPI_FLASH_SPANSION
75	bool "Spansion SPI flash support"
76	help
77	  Add support for various Spansion SPI flash chips (S25FLxxx)
78
79config SPI_FLASH_STMICRO
80	bool "STMicro SPI flash support"
81	help
82	  Add support for various STMicro SPI flash chips (M25Pxxx and N25Qxxx)
83
84config SPI_FLASH_SST
85	bool "SST SPI flash support"
86	help
87	  Add support for various SST SPI flash chips (SST25xxx)
88
89config SPI_FLASH_WINBOND
90	bool "Winbond SPI flash support"
91	help
92	  Add support for various Winbond SPI flash chips (W25xxx)
93
94endif
95
96config SPI_FLASH_USE_4K_SECTORS
97	bool "Use small 4096 B erase sectors"
98	depends on SPI_FLASH
99	default y
100	help
101	  Many flash memories support erasing small (4096 B) sectors. Depending
102	  on the usage this feature may provide performance gain in comparison
103	  to erasing whole blocks (32/64 KiB).
104	  Changing a small part of the flash's contents is usually faster with
105	  small sectors. On the other hand erasing should be faster when using
106	  64 KiB block instead of 16 × 4 KiB sectors.
107
108	  Please note that some tools/drivers/filesystems may not work with
109	  4096 B erase size (e.g. UBIFS requires 15 KiB as a minimum).
110
111config SPI_FLASH_DATAFLASH
112	bool "AT45xxx DataFlash support"
113	depends on SPI_FLASH && DM_SPI_FLASH
114	help
115	  Enable the access for SPI-flash-based AT45xxx DataFlash chips.
116	  DataFlash is a kind of SPI flash. Most AT45 chips have two buffers
117	  in each chip, which may be used for double buffered I/O; but this
118	  driver doesn't (yet) use these for any kind of i/o overlap or prefetching.
119
120	  Sometimes DataFlash is packaged in MMC-format cards, although the
121	  MMC stack can't (yet?) distinguish between MMC and DataFlash
122	  protocols during enumeration.
123
124	  If unsure, say N
125
126config SPI_FLASH_MTD
127	bool "SPI Flash MTD support"
128	depends on SPI_FLASH
129	help
130          Enable the MTD support for spi flash layer, this adapter is for
131	  translating mtd_read/mtd_write commands into spi_flash_read/write
132	  commands. It is not intended to use it within sf_cmd or the SPI
133	  flash subsystem. Such an adapter is needed for subsystems like
134	  UBI which can only operate on top of the MTD layer.
135
136	  If unsure, say N
137
138endmenu # menu "SPI Flash Support"
139