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+# drivers/mtd/chips/Kconfig
+# $Id: Kconfig,v 1.13 2004/12/01 15:49:10 nico Exp $
+
+menu "RAM/ROM/Flash chip drivers"
+ depends on MTD!=n
+
+config MTD_CFI
+ tristate "Detect flash chips by Common Flash Interface (CFI) probe"
+ depends on MTD
+ select MTD_GEN_PROBE
+ help
+ The Common Flash Interface specification was developed by Intel,
+ AMD and other flash manufactures that provides a universal method
+ for probing the capabilities of flash devices. If you wish to
+ support any device that is CFI-compliant, you need to enable this
+ option. Visit <http://www.amd.com/products/nvd/overview/cfi.html>
+ for more information on CFI.
+
+config MTD_JEDECPROBE
+ tristate "Detect non-CFI AMD/JEDEC-compatible flash chips"
+ depends on MTD
+ select MTD_GEN_PROBE
+ help
+ This option enables JEDEC-style probing of flash chips which are not
+ compatible with the Common Flash Interface, but will use the common
+ CFI-targetted flash drivers for any chips which are identified which
+ are in fact compatible in all but the probe method. This actually
+ covers most AMD/Fujitsu-compatible chips, and will shortly cover also
+ non-CFI Intel chips (that code is in MTD CVS and should shortly be sent
+ for inclusion in Linus' tree)
+
+config MTD_GEN_PROBE
+ tristate
+
+config MTD_CFI_ADV_OPTIONS
+ bool "Flash chip driver advanced configuration options"
+ depends on MTD_GEN_PROBE
+ help
+ If you need to specify a specific endianness for access to flash
+ chips, or if you wish to reduce the size of the kernel by including
+ support for only specific arrangements of flash chips, say 'Y'. This
+ option does not directly affect the code, but will enable other
+ configuration options which allow you to do so.
+
+ If unsure, say 'N'.
+
+choice
+ prompt "Flash cmd/query data swapping"
+ depends on MTD_CFI_ADV_OPTIONS
+ default MTD_CFI_NOSWAP
+
+config MTD_CFI_NOSWAP
+ bool "NO"
+ ---help---
+ This option defines the way in which the CPU attempts to arrange
+ data bits when writing the 'magic' commands to the chips. Saying
+ 'NO', which is the default when CONFIG_MTD_CFI_ADV_OPTIONS isn't
+ enabled, means that the CPU will not do any swapping; the chips
+ are expected to be wired to the CPU in 'host-endian' form.
+ Specific arrangements are possible with the BIG_ENDIAN_BYTE and
+ LITTLE_ENDIAN_BYTE, if the bytes are reversed.
+
+ If you have a LART, on which the data (and address) lines were
+ connected in a fashion which ensured that the nets were as short
+ as possible, resulting in a bit-shuffling which seems utterly
+ random to the untrained eye, you need the LART_ENDIAN_BYTE option.
+
+ Yes, there really exists something sicker than PDP-endian :)
+
+config MTD_CFI_BE_BYTE_SWAP
+ bool "BIG_ENDIAN_BYTE"
+
+config MTD_CFI_LE_BYTE_SWAP
+ bool "LITTLE_ENDIAN_BYTE"
+
+endchoice
+
+config MTD_CFI_GEOMETRY
+ bool "Specific CFI Flash geometry selection"
+ depends on MTD_CFI_ADV_OPTIONS
+ help
+ This option does not affect the code directly, but will enable
+ some other configuration options which would allow you to reduce
+ the size of the kernel by including support for only certain
+ arrangements of CFI chips. If unsure, say 'N' and all options
+ which are supported by the current code will be enabled.
+
+config MTD_MAP_BANK_WIDTH_1
+ bool "Support 8-bit buswidth" if MTD_CFI_GEOMETRY
+ default y
+ help
+ If you wish to support CFI devices on a physical bus which is
+ 8 bits wide, say 'Y'.
+
+config MTD_MAP_BANK_WIDTH_2
+ bool "Support 16-bit buswidth" if MTD_CFI_GEOMETRY
+ default y
+ help
+ If you wish to support CFI devices on a physical bus which is
+ 16 bits wide, say 'Y'.
+
+config MTD_MAP_BANK_WIDTH_4
+ bool "Support 32-bit buswidth" if MTD_CFI_GEOMETRY
+ default y
+ help
+ If you wish to support CFI devices on a physical bus which is
+ 32 bits wide, say 'Y'.
+
+config MTD_MAP_BANK_WIDTH_8
+ bool "Support 64-bit buswidth" if MTD_CFI_GEOMETRY
+ default n
+ help
+ If you wish to support CFI devices on a physical bus which is
+ 64 bits wide, say 'Y'.
+
+config MTD_MAP_BANK_WIDTH_16
+ bool "Support 128-bit buswidth" if MTD_CFI_GEOMETRY
+ default n
+ help
+ If you wish to support CFI devices on a physical bus which is
+ 128 bits wide, say 'Y'.
+
+config MTD_MAP_BANK_WIDTH_32
+ bool "Support 256-bit buswidth" if MTD_CFI_GEOMETRY
+ default n
+ help
+ If you wish to support CFI devices on a physical bus which is
+ 256 bits wide, say 'Y'.
+
+config MTD_CFI_I1
+ bool "Support 1-chip flash interleave" if MTD_CFI_GEOMETRY
+ default y
+ help
+ If your flash chips are not interleaved - i.e. you only have one
+ flash chip addressed by each bus cycle, then say 'Y'.
+
+config MTD_CFI_I2
+ bool "Support 2-chip flash interleave" if MTD_CFI_GEOMETRY
+ default y
+ help
+ If your flash chips are interleaved in pairs - i.e. you have two
+ flash chips addressed by each bus cycle, then say 'Y'.
+
+config MTD_CFI_I4
+ bool "Support 4-chip flash interleave" if MTD_CFI_GEOMETRY
+ default n
+ help
+ If your flash chips are interleaved in fours - i.e. you have four
+ flash chips addressed by each bus cycle, then say 'Y'.
+
+config MTD_CFI_I8
+ bool "Support 8-chip flash interleave" if MTD_CFI_GEOMETRY
+ default n
+ help
+ If your flash chips are interleaved in eights - i.e. you have eight
+ flash chips addressed by each bus cycle, then say 'Y'.
+
+config MTD_CFI_INTELEXT
+ tristate "Support for Intel/Sharp flash chips"
+ depends on MTD_GEN_PROBE
+ select MTD_CFI_UTIL
+ help
+ The Common Flash Interface defines a number of different command
+ sets which a CFI-compliant chip may claim to implement. This code
+ provides support for one of those command sets, used on Intel
+ StrataFlash and other parts.
+
+config MTD_CFI_AMDSTD
+ tristate "Support for AMD/Fujitsu flash chips"
+ depends on MTD_GEN_PROBE
+ select MTD_CFI_UTIL
+ help
+ The Common Flash Interface defines a number of different command
+ sets which a CFI-compliant chip may claim to implement. This code
+ provides support for one of those command sets, used on chips
+ including the AMD Am29LV320.
+
+config MTD_CFI_AMDSTD_RETRY
+ int "Retry failed commands (erase/program)"
+ depends on MTD_CFI_AMDSTD
+ default "0"
+ help
+ Some chips, when attached to a shared bus, don't properly filter
+ bus traffic that is destined to other devices. This broken
+ behavior causes erase and program sequences to be aborted when
+ the sequences are mixed with traffic for other devices.
+
+ SST49LF040 (and related) chips are know to be broken.
+
+config MTD_CFI_AMDSTD_RETRY_MAX
+ int "Max retries of failed commands (erase/program)"
+ depends on MTD_CFI_AMDSTD_RETRY
+ default "0"
+ help
+ If you have an SST49LF040 (or related chip) then this value should
+ be set to at least 1. This can also be adjusted at driver load
+ time with the retry_cmd_max module parameter.
+
+config MTD_CFI_STAA
+ tristate "Support for ST (Advanced Architecture) flash chips"
+ depends on MTD_GEN_PROBE
+ select MTD_CFI_UTIL
+ help
+ The Common Flash Interface defines a number of different command
+ sets which a CFI-compliant chip may claim to implement. This code
+ provides support for one of those command sets.
+
+config MTD_CFI_UTIL
+ tristate
+
+config MTD_RAM
+ tristate "Support for RAM chips in bus mapping"
+ depends on MTD
+ help
+ This option enables basic support for RAM chips accessed through
+ a bus mapping driver.
+
+config MTD_ROM
+ tristate "Support for ROM chips in bus mapping"
+ depends on MTD
+ help
+ This option enables basic support for ROM chips accessed through
+ a bus mapping driver.
+
+config MTD_ABSENT
+ tristate "Support for absent chips in bus mapping"
+ depends on MTD
+ help
+ This option enables support for a dummy probing driver used to
+ allocated placeholder MTD devices on systems that have socketed
+ or removable media. Use of this driver as a fallback chip probe
+ preserves the expected registration order of MTD device nodes on
+ the system regardless of media presence. Device nodes created
+ with this driver will return -ENODEV upon access.
+
+config MTD_OBSOLETE_CHIPS
+ depends on MTD && BROKEN
+ bool "Older (theoretically obsoleted now) drivers for non-CFI chips"
+ help
+ This option does not enable any code directly, but will allow you to
+ select some other chip drivers which are now considered obsolete,
+ because the generic CONFIG_JEDECPROBE code above should now detect
+ the chips which are supported by these drivers, and allow the generic
+ CFI-compatible drivers to drive the chips. Say 'N' here unless you have
+ already tried the CONFIG_JEDECPROBE method and reported its failure
+ to the MTD mailing list at <linux-mtd@lists.infradead.org>
+
+config MTD_AMDSTD
+ tristate "AMD compatible flash chip support (non-CFI)"
+ depends on MTD && MTD_OBSOLETE_CHIPS
+ help
+ This option enables support for flash chips using AMD-compatible
+ commands, including some which are not CFI-compatible and hence
+ cannot be used with the CONFIG_MTD_CFI_AMDSTD option.
+
+ It also works on AMD compatible chips that do conform to CFI.
+
+config MTD_SHARP
+ tristate "pre-CFI Sharp chip support"
+ depends on MTD && MTD_OBSOLETE_CHIPS
+ help
+ This option enables support for flash chips using Sharp-compatible
+ commands, including some which are not CFI-compatible and hence
+ cannot be used with the CONFIG_MTD_CFI_INTELxxx options.
+
+config MTD_JEDEC
+ tristate "JEDEC device support"
+ depends on MTD && MTD_OBSOLETE_CHIPS
+ help
+ Enable older older JEDEC flash interface devices for self
+ programming flash. It is commonly used in older AMD chips. It is
+ only called JEDEC because the JEDEC association
+ <http://www.jedec.org/> distributes the identification codes for the
+ chips.
+
+config MTD_XIP
+ bool "XIP aware MTD support"
+ depends on !SMP && MTD_CFI_INTELEXT && EXPERIMENTAL
+ default y if XIP_KERNEL
+ help
+ This allows MTD support to work with flash memory which is also
+ used for XIP purposes. If you're not sure what this is all about
+ then say N.
+
+endmenu
+