[net-next-2.6.git] / drivers / mtd / devices / Kconfig

# drivers/mtd/maps/Kconfig
# $Id: Kconfig,v 1.18 2005/11/07 11:14:24 gleixner Exp $

menu "Self-contained MTD device drivers"
	depends on MTD!=n

config MTD_PMC551
	tristate "Ramix PMC551 PCI Mezzanine RAM card support"
	depends on MTD && PCI
	---help---
	  This provides a MTD device driver for the Ramix PMC551 RAM PCI card
	  from Ramix Inc. <http://www.ramix.com/products/memory/pmc551.html>.
	  These devices come in memory configurations from 32M - 1G.  If you
	  have one, you probably want to enable this.

	  If this driver is compiled as a module you get the ability to select
	  the size of the aperture window pointing into the devices memory.
	  What this means is that if you have a 1G card, normally the kernel
	  will use a 1G memory map as its view of the device.  As a module,
	  you can select a 1M window into the memory and the driver will
	  "slide" the window around the PMC551's memory.  This was
	  particularly useful on the 2.2 kernels on PPC architectures as there
	  was limited kernel space to deal with.

config MTD_PMC551_BUGFIX
	bool "PMC551 256M DRAM Bugfix"
	depends on MTD_PMC551
	help
	  Some of Ramix's PMC551 boards with 256M configurations have invalid
	  column and row mux values.  This option will fix them, but will
	  break other memory configurations.  If unsure say N.

config MTD_PMC551_DEBUG
	bool "PMC551 Debugging"
	depends on MTD_PMC551
	help
	  This option makes the PMC551 more verbose during its operation and
	  is only really useful if you are developing on this driver or
	  suspect a possible hardware or driver bug.  If unsure say N.

config MTD_MS02NV
	tristate "DEC MS02-NV NVRAM module support"
	depends on MTD && MACH_DECSTATION
	help
	  This is an MTD driver for the DEC's MS02-NV (54-20948-01) battery
	  backed-up NVRAM module.  The module was originally meant as an NFS
	  accelerator.  Say Y here if you have a DECstation 5000/2x0 or a
	  DECsystem 5900 equipped with such a module.

	  If you want to compile this driver as a module ( = code which can be
	  inserted in and removed from the running kernel whenever you want),
	  say M here and read <file:Documentation/modules.txt>.  The module will
	  be called ms02-nv.o.

config MTD_DATAFLASH
	tristate "Support for AT45xxx DataFlash"
	depends on MTD && SPI_MASTER && EXPERIMENTAL
	help
	  This enables access to AT45xxx DataFlash chips, using SPI.
	  Sometimes DataFlash chips are packaged inside MMC-format
	  cards; at this writing, the MMC stack won't handle those.

config MTD_M25P80
	tristate "Support for M25 SPI Flash"
	depends on MTD && SPI_MASTER && EXPERIMENTAL
	help
	  This enables access to ST M25P80 and similar SPI flash chips,
	  used for program and data storage.  Set up your spi devices
	  with the right board-specific platform data.

config MTD_SLRAM
	tristate "Uncached system RAM"
	depends on MTD
	help
	  If your CPU cannot cache all of the physical memory in your machine,
	  you can still use it for storage or swap by using this driver to
	  present it to the system as a Memory Technology Device.

config MTD_PHRAM
	tristate "Physical system RAM"
	depends on MTD
	help
	  This is a re-implementation of the slram driver above.

	  Use this driver to access physical memory that the kernel proper
	  doesn't have access to, memory beyond the mem=xxx limit, nvram,
	  memory on the video card, etc...

config MTD_LART
	tristate "28F160xx flash driver for LART"
	depends on SA1100_LART && MTD
	help
	  This enables the flash driver for LART. Please note that you do
	  not need any mapping/chip driver for LART. This one does it all
	  for you, so go disable all of those if you enabled some of them (:

config MTD_MTDRAM
	tristate "Test driver using RAM"
	depends on MTD
	help
	  This enables a test MTD device driver which uses vmalloc() to
	  provide storage.  You probably want to say 'N' unless you're
	  testing stuff.

config MTDRAM_TOTAL_SIZE
	int "MTDRAM device size in KiB"
	depends on MTD_MTDRAM
	default "4096"
	help
	  This allows you to configure the total size of the MTD device
	  emulated by the MTDRAM driver.  If the MTDRAM driver is built
	  as a module, it is also possible to specify this as a parameter when
	  loading the module.

config MTDRAM_ERASE_SIZE
	int "MTDRAM erase block size in KiB"
	depends on MTD_MTDRAM
	default "128"
	help
	  This allows you to configure the size of the erase blocks in the
	  device emulated by the MTDRAM driver.  If the MTDRAM driver is built
	  as a module, it is also possible to specify this as a parameter when
	  loading the module.

#If not a module (I don't want to test it as a module)
config MTDRAM_ABS_POS
	hex "SRAM Hexadecimal Absolute position or 0"
	depends on MTD_MTDRAM=y
	default "0"
	help
	  If you have system RAM accessible by the CPU but not used by Linux
	  in normal operation, you can give the physical address at which the
	  available RAM starts, and the MTDRAM driver will use it instead of
	  allocating space from Linux's available memory. Otherwise, leave
	  this set to zero. Most people will want to leave this as zero.

config MTD_BLOCK2MTD
	tristate "MTD using block device"
	depends on MTD && BLOCK
	help
	  This driver allows a block device to appear as an MTD. It would
	  generally be used in the following cases:

	  Using Compact Flash as an MTD, these usually present themselves to
	  the system as an ATA drive.
	  Testing MTD users (eg JFFS2) on large media and media that might
	  be removed during a write (using the floppy drive).

comment "Disk-On-Chip Device Drivers"

config MTD_DOC2000
	tristate "M-Systems Disk-On-Chip 2000 and Millennium (DEPRECATED)"
	depends on MTD
	select MTD_DOCPROBE
	select MTD_NAND_IDS
	---help---
	  This provides an MTD device driver for the M-Systems DiskOnChip
	  2000 and Millennium devices.  Originally designed for the DiskOnChip
	  2000, it also now includes support for the DiskOnChip Millennium.
	  If you have problems with this driver and the DiskOnChip Millennium,
	  you may wish to try the alternative Millennium driver below. To use
	  the alternative driver, you will need to undefine DOC_SINGLE_DRIVER
	  in the <file:drivers/mtd/devices/docprobe.c> source code.

	  If you use this device, you probably also want to enable the NFTL
	  'NAND Flash Translation Layer' option below, which is used to
	  emulate a block device by using a kind of file system on the flash
	  chips.

	  NOTE: This driver is deprecated and will probably be removed soon.
	  Please try the new DiskOnChip driver under "NAND Flash Device
	  Drivers".

config MTD_DOC2001
	tristate "M-Systems Disk-On-Chip Millennium-only alternative driver (DEPRECATED)"
	depends on MTD
	select MTD_DOCPROBE
	select MTD_NAND_IDS
	---help---
	  This provides an alternative MTD device driver for the M-Systems
	  DiskOnChip Millennium devices.  Use this if you have problems with
	  the combined DiskOnChip 2000 and Millennium driver above.  To get
	  the DiskOnChip probe code to load and use this driver instead of
	  the other one, you will need to undefine DOC_SINGLE_DRIVER near
	  the beginning of <file:drivers/mtd/devices/docprobe.c>.

	  If you use this device, you probably also want to enable the NFTL
	  'NAND Flash Translation Layer' option below, which is used to
	  emulate a block device by using a kind of file system on the flash
	  chips.

	  NOTE: This driver is deprecated and will probably be removed soon.
	  Please try the new DiskOnChip driver under "NAND Flash Device
	  Drivers".

config MTD_DOC2001PLUS
	tristate "M-Systems Disk-On-Chip Millennium Plus"
	depends on MTD
	select MTD_DOCPROBE
	select MTD_NAND_IDS
	---help---
	  This provides an MTD device driver for the M-Systems DiskOnChip
	  Millennium Plus devices.

	  If you use this device, you probably also want to enable the INFTL
	  'Inverse NAND Flash Translation Layer' option below, which is used
	  to emulate a block device by using a kind of file system on the
	  flash chips.

	  NOTE: This driver will soon be replaced by the new DiskOnChip driver
	  under "NAND Flash Device Drivers" (currently that driver does not
	  support all Millennium Plus devices).

config MTD_DOCPROBE
	tristate
	select MTD_DOCECC

config MTD_DOCECC
	tristate

config MTD_DOCPROBE_ADVANCED
	bool "Advanced detection options for DiskOnChip"
	depends on MTD_DOCPROBE
	help
	  This option allows you to specify nonstandard address at which to
	  probe for a DiskOnChip, or to change the detection options.  You
	  are unlikely to need any of this unless you are using LinuxBIOS.
	  Say 'N'.

config MTD_DOCPROBE_ADDRESS
	hex "Physical address of DiskOnChip" if MTD_DOCPROBE_ADVANCED
	depends on MTD_DOCPROBE
	default "0x0000" if MTD_DOCPROBE_ADVANCED
	default "0" if !MTD_DOCPROBE_ADVANCED
	---help---
	  By default, the probe for DiskOnChip devices will look for a
	  DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
	  This option allows you to specify a single address at which to probe
	  for the device, which is useful if you have other devices in that
	  range which get upset when they are probed.

	  (Note that on PowerPC, the normal probe will only check at
	  0xE4000000.)

	  Normally, you should leave this set to zero, to allow the probe at
	  the normal addresses.

config MTD_DOCPROBE_HIGH
	bool "Probe high addresses"
	depends on MTD_DOCPROBE_ADVANCED
	help
	  By default, the probe for DiskOnChip devices will look for a
	  DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
	  This option changes to make it probe between 0xFFFC8000 and
	  0xFFFEE000.  Unless you are using LinuxBIOS, this is unlikely to be
	  useful to you.  Say 'N'.

config MTD_DOCPROBE_55AA
	bool "Probe for 0x55 0xAA BIOS Extension Signature"
	depends on MTD_DOCPROBE_ADVANCED
	help
	  Check for the 0x55 0xAA signature of a DiskOnChip, and do not
	  continue with probing if it is absent.  The signature will always be
	  present for a DiskOnChip 2000 or a normal DiskOnChip Millennium.
	  Only if you have overwritten the first block of a DiskOnChip
	  Millennium will it be absent.  Enable this option if you are using
	  LinuxBIOS or if you need to recover a DiskOnChip Millennium on which
	  you have managed to wipe the first block.

endmenu
Commit	Line	Data
1da177e4	1	# drivers/mtd/maps/Kconfig
e5580fbe	2	# $Id: Kconfig,v 1.18 2005/11/07 11:14:24 gleixner Exp $
1da177e4 LT	3
	4	menu "Self-contained MTD device drivers"
	5	depends on MTD!=n
	6
	7	config MTD_PMC551
	8	tristate "Ramix PMC551 PCI Mezzanine RAM card support"
	9	depends on MTD && PCI
	10	---help---
	11	This provides a MTD device driver for the Ramix PMC551 RAM PCI card
	12	from Ramix Inc. <http://www.ramix.com/products/memory/pmc551.html>.
	13	These devices come in memory configurations from 32M - 1G. If you
	14	have one, you probably want to enable this.
	15
	16	If this driver is compiled as a module you get the ability to select
	17	the size of the aperture window pointing into the devices memory.
	18	What this means is that if you have a 1G card, normally the kernel
	19	will use a 1G memory map as its view of the device. As a module,
	20	you can select a 1M window into the memory and the driver will
	21	"slide" the window around the PMC551's memory. This was
	22	particularly useful on the 2.2 kernels on PPC architectures as there
	23	was limited kernel space to deal with.
	24
	25	config MTD_PMC551_BUGFIX
	26	bool "PMC551 256M DRAM Bugfix"
	27	depends on MTD_PMC551
	28	help
	29	Some of Ramix's PMC551 boards with 256M configurations have invalid
	30	column and row mux values. This option will fix them, but will
	31	break other memory configurations. If unsure say N.
	32
	33	config MTD_PMC551_DEBUG
	34	bool "PMC551 Debugging"
	35	depends on MTD_PMC551
	36	help
	37	This option makes the PMC551 more verbose during its operation and
	38	is only really useful if you are developing on this driver or
	39	suspect a possible hardware or driver bug. If unsure say N.
	40
	41	config MTD_MS02NV
	42	tristate "DEC MS02-NV NVRAM module support"
	43	depends on MTD && MACH_DECSTATION
	44	help
	45	This is an MTD driver for the DEC's MS02-NV (54-20948-01) battery
	46	backed-up NVRAM module. The module was originally meant as an NFS
	47	accelerator. Say Y here if you have a DECstation 5000/2x0 or a
	48	DECsystem 5900 equipped with such a module.
	49
be21ce11 MM	50	If you want to compile this driver as a module ( = code which can be
	51	inserted in and removed from the running kernel whenever you want),
	52	say M here and read <file:Documentation/modules.txt>. The module will
	53	be called ms02-nv.o.
	54
1d6432fe DB	55	config MTD_DATAFLASH
	56	tristate "Support for AT45xxx DataFlash"
	57	depends on MTD && SPI_MASTER && EXPERIMENTAL
	58	help
	59	This enables access to AT45xxx DataFlash chips, using SPI.
	60	Sometimes DataFlash chips are packaged inside MMC-format
	61	cards; at this writing, the MMC stack won't handle those.
	62
2f9f7628 ML	63	config MTD_M25P80
	64	tristate "Support for M25 SPI Flash"
	65	depends on MTD && SPI_MASTER && EXPERIMENTAL
	66	help
	67	This enables access to ST M25P80 and similar SPI flash chips,
	68	used for program and data storage. Set up your spi devices
	69	with the right board-specific platform data.
	70
1da177e4 LT	71	config MTD_SLRAM
	72	tristate "Uncached system RAM"
	73	depends on MTD
	74	help
	75	If your CPU cannot cache all of the physical memory in your machine,
	76	you can still use it for storage or swap by using this driver to
	77	present it to the system as a Memory Technology Device.
	78
	79	config MTD_PHRAM
	80	tristate "Physical system RAM"
	81	depends on MTD
	82	help
	83	This is a re-implementation of the slram driver above.
	84
	85	Use this driver to access physical memory that the kernel proper
	86	doesn't have access to, memory beyond the mem=xxx limit, nvram,
	87	memory on the video card, etc...
	88
	89	config MTD_LART
	90	tristate "28F160xx flash driver for LART"
	91	depends on SA1100_LART && MTD
	92	help
	93	This enables the flash driver for LART. Please note that you do
	94	not need any mapping/chip driver for LART. This one does it all
	95	for you, so go disable all of those if you enabled some of them (:
	96
	97	config MTD_MTDRAM
	98	tristate "Test driver using RAM"
	99	depends on MTD
	100	help
	101	This enables a test MTD device driver which uses vmalloc() to
	102	provide storage. You probably want to say 'N' unless you're
	103	testing stuff.
	104
	105	config MTDRAM_TOTAL_SIZE
	106	int "MTDRAM device size in KiB"
	107	depends on MTD_MTDRAM
	108	default "4096"
	109	help
	110	This allows you to configure the total size of the MTD device
	111	emulated by the MTDRAM driver. If the MTDRAM driver is built
	112	as a module, it is also possible to specify this as a parameter when
	113	loading the module.
	114
	115	config MTDRAM_ERASE_SIZE
	116	int "MTDRAM erase block size in KiB"
	117	depends on MTD_MTDRAM
	118	default "128"
	119	help
	120	This allows you to configure the size of the erase blocks in the
	121	device emulated by the MTDRAM driver. If the MTDRAM driver is built
	122	as a module, it is also possible to specify this as a parameter when
	123	loading the module.
	124
	125	#If not a module (I don't want to test it as a module)
	126	config MTDRAM_ABS_POS
	127	hex "SRAM Hexadecimal Absolute position or 0"
	128	depends on MTD_MTDRAM=y
	129	default "0"
	130	help
	131	If you have system RAM accessible by the CPU but not used by Linux
	132	in normal operation, you can give the physical address at which the
	133	available RAM starts, and the MTDRAM driver will use it instead of
e5580fbe	134	allocating space from Linux's available memory. Otherwise, leave
1da177e4 LT	135	this set to zero. Most people will want to leave this as zero.
1da177e4 LT	136
acc8dadc JE	137	config MTD_BLOCK2MTD
acc8dadc JE	138	tristate "MTD using block device"
9361401e	139	depends on MTD && BLOCK
1da177e4 LT	140	help
	141	This driver allows a block device to appear as an MTD. It would
	142	generally be used in the following cases:
	143
	144	Using Compact Flash as an MTD, these usually present themselves to
	145	the system as an ATA drive.
	146	Testing MTD users (eg JFFS2) on large media and media that might
	147	be removed during a write (using the floppy drive).
	148
1da177e4 LT	149	comment "Disk-On-Chip Device Drivers"
	150
	151	config MTD_DOC2000
	152	tristate "M-Systems Disk-On-Chip 2000 and Millennium (DEPRECATED)"
	153	depends on MTD
	154	select MTD_DOCPROBE
	155	select MTD_NAND_IDS
	156	---help---
	157	This provides an MTD device driver for the M-Systems DiskOnChip
	158	2000 and Millennium devices. Originally designed for the DiskOnChip
	159	2000, it also now includes support for the DiskOnChip Millennium.
	160	If you have problems with this driver and the DiskOnChip Millennium,
	161	you may wish to try the alternative Millennium driver below. To use
	162	the alternative driver, you will need to undefine DOC_SINGLE_DRIVER
	163	in the <file:drivers/mtd/devices/docprobe.c> source code.
	164
	165	If you use this device, you probably also want to enable the NFTL
	166	'NAND Flash Translation Layer' option below, which is used to
	167	emulate a block device by using a kind of file system on the flash
	168	chips.
	169
	170	NOTE: This driver is deprecated and will probably be removed soon.
	171	Please try the new DiskOnChip driver under "NAND Flash Device
	172	Drivers".
	173
	174	config MTD_DOC2001
	175	tristate "M-Systems Disk-On-Chip Millennium-only alternative driver (DEPRECATED)"
	176	depends on MTD
	177	select MTD_DOCPROBE
	178	select MTD_NAND_IDS
	179	---help---
e5580fbe	180	This provides an alternative MTD device driver for the M-Systems
1da177e4 LT	181	DiskOnChip Millennium devices. Use this if you have problems with
	182	the combined DiskOnChip 2000 and Millennium driver above. To get
	183	the DiskOnChip probe code to load and use this driver instead of
	184	the other one, you will need to undefine DOC_SINGLE_DRIVER near
	185	the beginning of <file:drivers/mtd/devices/docprobe.c>.
	186
	187	If you use this device, you probably also want to enable the NFTL
	188	'NAND Flash Translation Layer' option below, which is used to
	189	emulate a block device by using a kind of file system on the flash
	190	chips.
	191
	192	NOTE: This driver is deprecated and will probably be removed soon.
	193	Please try the new DiskOnChip driver under "NAND Flash Device
	194	Drivers".
	195
	196	config MTD_DOC2001PLUS
	197	tristate "M-Systems Disk-On-Chip Millennium Plus"
	198	depends on MTD
	199	select MTD_DOCPROBE
	200	select MTD_NAND_IDS
	201	---help---
	202	This provides an MTD device driver for the M-Systems DiskOnChip
	203	Millennium Plus devices.
	204
	205	If you use this device, you probably also want to enable the INFTL
	206	'Inverse NAND Flash Translation Layer' option below, which is used
e5580fbe	207	to emulate a block device by using a kind of file system on the
1da177e4 LT	208	flash chips.
	209
	210	NOTE: This driver will soon be replaced by the new DiskOnChip driver
	211	under "NAND Flash Device Drivers" (currently that driver does not
	212	support all Millennium Plus devices).
	213
	214	config MTD_DOCPROBE
	215	tristate
	216	select MTD_DOCECC
	217
	218	config MTD_DOCECC
	219	tristate
	220
	221	config MTD_DOCPROBE_ADVANCED
	222	bool "Advanced detection options for DiskOnChip"
	223	depends on MTD_DOCPROBE
	224	help
	225	This option allows you to specify nonstandard address at which to
	226	probe for a DiskOnChip, or to change the detection options. You
	227	are unlikely to need any of this unless you are using LinuxBIOS.
	228	Say 'N'.
	229
	230	config MTD_DOCPROBE_ADDRESS
	231	hex "Physical address of DiskOnChip" if MTD_DOCPROBE_ADVANCED
	232	depends on MTD_DOCPROBE
	233	default "0x0000" if MTD_DOCPROBE_ADVANCED
	234	default "0" if !MTD_DOCPROBE_ADVANCED
	235	---help---
	236	By default, the probe for DiskOnChip devices will look for a
	237	DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
	238	This option allows you to specify a single address at which to probe
	239	for the device, which is useful if you have other devices in that
	240	range which get upset when they are probed.
	241
	242	(Note that on PowerPC, the normal probe will only check at
	243	0xE4000000.)
	244
	245	Normally, you should leave this set to zero, to allow the probe at
	246	the normal addresses.
	247
	248	config MTD_DOCPROBE_HIGH
	249	bool "Probe high addresses"
	250	depends on MTD_DOCPROBE_ADVANCED
	251	help
	252	By default, the probe for DiskOnChip devices will look for a
	253	DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
	254	This option changes to make it probe between 0xFFFC8000 and
	255	0xFFFEE000. Unless you are using LinuxBIOS, this is unlikely to be
	256	useful to you. Say 'N'.
	257
	258	config MTD_DOCPROBE_55AA
	259	bool "Probe for 0x55 0xAA BIOS Extension Signature"
	260	depends on MTD_DOCPROBE_ADVANCED
	261	help
	262	Check for the 0x55 0xAA signature of a DiskOnChip, and do not
	263	continue with probing if it is absent. The signature will always be
	264	present for a DiskOnChip 2000 or a normal DiskOnChip Millennium.
	265	Only if you have overwritten the first block of a DiskOnChip
	266	Millennium will it be absent. Enable this option if you are using
	267	LinuxBIOS or if you need to recover a DiskOnChip Millennium on which
	268	you have managed to wipe the first block.
	269
	270	endmenu
	271