kconfig

基于linux-2.6.28的mtd驱动

# drivers/mtd/maps/Kconfig

menu "Mapping drivers for chip access"
	depends on MTD!=n

config MTD_COMPLEX_MAPPINGS
	bool "Support non-linear mappings of flash chips"
	help
	  This causes the chip drivers to allow for complicated
	  paged mappings of flash chips.

config MTD_PHYSMAP
	tristate "CFI Flash device in physical memory map"
	depends on MTD_CFI || MTD_JEDECPROBE || MTD_ROM
	help
	  This provides a 'mapping' driver which allows the NOR Flash and
	  ROM driver code to communicate with chips which are mapped
	  physically into the CPU's memory. You will need to configure
	  the physical address and size of the flash chips on your
	  particular board as well as the bus width, either statically
	  with config options or at run-time.

	  To compile this driver as a module, choose M here: the
	  module will be called physmap.

config MTD_PHYSMAP_START
	hex "Physical start address of flash mapping"
	depends on MTD_PHYSMAP
	default "0x8000000"
	help
	  This is the physical memory location at which the flash chips
	  are mapped on your particular target board. Refer to the
	  memory map which should hopefully be in the documentation for
	  your board.
	  Ignore this option if you use run-time physmap configuration
	  (i.e., run-time calling physmap_configure()).

config MTD_PHYSMAP_LEN
	hex "Physical length of flash mapping"
	depends on MTD_PHYSMAP
	default "0"
	help
	  This is the total length of the mapping of the flash chips on
	  your particular board. If there is space, or aliases, in the
	  physical memory map between the chips, this could be larger
	  than the total amount of flash present. Refer to the memory
	  map which should hopefully be in the documentation for your
	  board.
	  Ignore this option if you use run-time physmap configuration
	  (i.e., run-time calling physmap_configure()).

config MTD_PHYSMAP_BANKWIDTH
	int "Bank width in octets"
	depends on MTD_PHYSMAP
	default "2"
	help
	  This is the total width of the data bus of the flash devices
	  in octets. For example, if you have a data bus width of 32
	  bits, you would set the bus width octet value to 4. This is
	  used internally by the CFI drivers.
	  Ignore this option if you use run-time physmap configuration
	  (i.e., run-time calling physmap_configure()).

config MTD_PHYSMAP_OF
	tristate "Flash device in physical memory map based on OF description"
	depends on PPC_OF && (MTD_CFI || MTD_JEDECPROBE || MTD_ROM)
	help
	  This provides a 'mapping' driver which allows the NOR Flash and
	  ROM driver code to communicate with chips which are mapped
	  physically into the CPU's memory. The mapping description here is
	  taken from OF device tree.

config MTD_PMC_MSP_EVM
	tristate "CFI Flash device mapped on PMC-Sierra MSP"
	depends on PMC_MSP && MTD_CFI
	select MTD_PARTITIONS
	help
	  This provides a 'mapping' driver which supports the way
	  in which user-programmable flash chips are connected on the
	  PMC-Sierra MSP eval/demo boards.

choice
	prompt "Maximum mappable memory available for flash IO"
	depends on MTD_PMC_MSP_EVM
	default MSP_FLASH_MAP_LIMIT_32M

config MSP_FLASH_MAP_LIMIT_32M
	bool "32M"

endchoice

config MSP_FLASH_MAP_LIMIT
	hex
	default "0x02000000"
	depends on MSP_FLASH_MAP_LIMIT_32M

config MTD_PMC_MSP_RAMROOT
	tristate "Embedded RAM block device for root on PMC-Sierra MSP"
	depends on PMC_MSP_EMBEDDED_ROOTFS && \
			(MTD_BLOCK || MTD_BLOCK_RO) && \
			MTD_RAM
	help
	  This provides support for the embedded root file system
          on PMC MSP devices.  This memory is mapped as a MTD block device.

config MTD_SUN_UFLASH
	tristate "Sun Microsystems userflash support"
	depends on SPARC && MTD_CFI && PCI
	help
	  This provides a 'mapping' driver which supports the way in
	  which user-programmable flash chips are connected on various
	  Sun Microsystems boardsets.  This driver will require CFI support
	  in the kernel, so if you did not enable CFI previously, do that now.

config MTD_SC520CDP
	tristate "CFI Flash device mapped on AMD SC520 CDP"
	depends on X86 && MTD_CFI && MTD_CONCAT
	help
	  The SC520 CDP board has two banks of CFI-compliant chips and one
	  Dual-in-line JEDEC chip. This 'mapping' driver supports that
	  arrangement, implementing three MTD devices.

config MTD_NETSC520
	tristate "CFI Flash device mapped on AMD NetSc520"
	depends on X86 && MTD_CFI && MTD_PARTITIONS
	help
	  This enables access routines for the flash chips on the AMD NetSc520
	  demonstration board. If you have one of these boards and would like
	  to use the flash chips on it, say 'Y'.

config MTD_TS5500
	tristate "JEDEC Flash device mapped on Technologic Systems TS-5500"
	depends on X86
	select MTD_PARTITIONS
	select MTD_JEDECPROBE
	select MTD_CFI_AMDSTD
	help
	  This provides a driver for the on-board flash of the Technologic
	  System's TS-5500 board. The 2MB flash is split into 3 partitions
	  which are accessed as separate MTD devices.

	  mtd0 and mtd2 are the two BIOS drives, which use the resident
	  flash disk (RFD) flash translation layer.

	  mtd1 allows you to reprogram your BIOS. BE VERY CAREFUL.

	  Note that jumper 3 ("Write Enable Drive A") must be set
	  otherwise detection won't succeed.

config MTD_SBC_GXX
	tristate "CFI Flash device mapped on Arcom SBC-GXx boards"
	depends on X86 && MTD_CFI_INTELEXT && MTD_PARTITIONS && MTD_COMPLEX_MAPPINGS
	help
	  This provides a driver for the on-board flash of Arcom Control
	  Systems' SBC-GXn family of boards, formerly known as SBC-MediaGX.
	  By default the flash is split into 3 partitions which are accessed
	  as separate MTD devices. This board utilizes Intel StrataFlash.
	  More info at
	  <http://www.arcomcontrols.com/products/icp/pc104/processors/SBC_GX1.htm>.

config MTD_PXA2XX
	tristate "CFI Flash device mapped on Intel XScale PXA2xx based boards"
	depends on (PXA25x || PXA27x) && MTD_CFI_INTELEXT
	select MTD_PARTITIONS
	help
	  This provides a driver for the NOR flash attached to a PXA2xx chip.

config MTD_OCTAGON
	tristate "JEDEC Flash device mapped on Octagon 5066 SBC"
	depends on X86 && MTD_JEDEC && MTD_COMPLEX_MAPPINGS
	help
	  This provides a 'mapping' driver which supports the way in which
	  the flash chips are connected in the Octagon-5066 Single Board
	  Computer. More information on the board is available at
	  <http://www.octagonsystems.com/CPUpages/5066.html>.

config MTD_VMAX
	tristate "JEDEC Flash device mapped on Tempustech VMAX SBC301"
	depends on X86 && MTD_JEDEC && MTD_COMPLEX_MAPPINGS
	help
	  This provides a 'mapping' driver which supports the way in which
	  the flash chips are connected in the Tempustech VMAX SBC301 Single
	  Board Computer. More information on the board is available at
	  <http://www.tempustech.com/>.

config MTD_SCx200_DOCFLASH
	tristate "Flash device mapped with DOCCS on NatSemi SCx200"
	depends on SCx200 && MTD_CFI && MTD_PARTITIONS
	help
	  Enable support for a flash chip mapped using the DOCCS signal on a
	  National Semiconductor SCx200 processor.

	  If you don't know what to do here, say N.

	  If compiled as a module, it will be called scx200_docflash.

config MTD_AMD76XROM
	tristate "BIOS flash chip on AMD76x southbridge"
	depends on X86 && MTD_JEDECPROBE
	help
	  Support for treating the BIOS flash chip on AMD76x motherboards
	  as an MTD device - with this you can reprogram your BIOS.

	  BE VERY CAREFUL.

config MTD_ICHXROM
	tristate "BIOS flash chip on Intel Controller Hub 2/3/4/5"
	depends on X86 && MTD_JEDECPROBE
	help
	  Support for treating the BIOS flash chip on ICHX motherboards
	  as an MTD device - with this you can reprogram your BIOS.

	  BE VERY CAREFUL.

config MTD_ESB2ROM
        tristate "BIOS flash chip on Intel ESB Controller Hub 2"
        depends on X86 && MTD_JEDECPROBE && PCI
        help
          Support for treating the BIOS flash chip on ESB2 motherboards
          as an MTD device - with this you can reprogram your BIOS.

          BE VERY CAREFUL.

config MTD_CK804XROM
	tristate "BIOS flash chip on Nvidia CK804"
	depends on X86 && MTD_JEDECPROBE && PCI
	help
	  Support for treating the BIOS flash chip on nvidia motherboards
	  as an MTD device - with this you can reprogram your BIOS.

	  BE VERY CAREFUL.

config MTD_SCB2_FLASH
	tristate "BIOS flash chip on Intel SCB2 boards"
	depends on X86 && MTD_JEDECPROBE
	help
	  Support for treating the BIOS flash chip on Intel SCB2 boards
	  as an MTD device - with this you can reprogram your BIOS.

	  BE VERY CAREFUL.

config MTD_TSUNAMI
	tristate "Flash chips on Tsunami TIG bus"
	depends on ALPHA_TSUNAMI && MTD_COMPLEX_MAPPINGS
	help
	  Support for the flash chip on Tsunami TIG bus.

config MTD_NETtel
	tristate "CFI flash device on SnapGear/SecureEdge"
	depends on X86 && MTD_PARTITIONS && MTD_JEDECPROBE
	help
	  Support for flash chips on NETtel/SecureEdge/SnapGear boards.

config MTD_ALCHEMY
	tristate "AMD Alchemy Pb1xxx/Db1xxx/RDK MTD support"
	depends on SOC_AU1X00 && MTD_PARTITIONS && MTD_CFI
	help
	  Flash memory access on AMD Alchemy Pb/Db/RDK Reference Boards

config MTD_DILNETPC
	tristate "CFI Flash device mapped on DIL/Net PC"
	depends on X86 && MTD_CONCAT && MTD_PARTITIONS && MTD_CFI_INTELEXT
	help
	  MTD map driver for SSV DIL/Net PC Boards "DNP" and "ADNP".
	  For details, see <http://www.ssv-embedded.de/ssv/pc104/p169.htm>
 	  and <http://www.ssv-embedded.de/ssv/pc104/p170.htm>

config MTD_DILNETPC_BOOTSIZE
	hex "Size of DIL/Net PC flash boot partition"
	depends on MTD_DILNETPC
	default "0x80000"
	help
	  The amount of space taken up by the kernel or Etherboot
	  on the DIL/Net PC flash chips.

config MTD_L440GX