1 # drivers/mtd/maps/Kconfig
3 menu "Self-contained MTD device drivers"
7 tristate "Ramix PMC551 PCI Mezzanine RAM card support"
10 This provides a MTD device driver for the Ramix PMC551 RAM PCI card
11 from Ramix Inc. <http://www.ramix.com/products/memory/pmc551.html>.
12 These devices come in memory configurations from 32M - 1G. If you
13 have one, you probably want to enable this.
15 If this driver is compiled as a module you get the ability to select
16 the size of the aperture window pointing into the devices memory.
17 What this means is that if you have a 1G card, normally the kernel
18 will use a 1G memory map as its view of the device. As a module,
19 you can select a 1M window into the memory and the driver will
20 "slide" the window around the PMC551's memory. This was
21 particularly useful on the 2.2 kernels on PPC architectures as there
22 was limited kernel space to deal with.
24 config MTD_PMC551_BUGFIX
25 bool "PMC551 256M DRAM Bugfix"
28 Some of Ramix's PMC551 boards with 256M configurations have invalid
29 column and row mux values. This option will fix them, but will
30 break other memory configurations. If unsure say N.
32 config MTD_PMC551_DEBUG
33 bool "PMC551 Debugging"
36 This option makes the PMC551 more verbose during its operation and
37 is only really useful if you are developing on this driver or
38 suspect a possible hardware or driver bug. If unsure say N.
41 tristate "DEC MS02-NV NVRAM module support"
42 depends on MACH_DECSTATION
44 This is an MTD driver for the DEC's MS02-NV (54-20948-01) battery
45 backed-up NVRAM module. The module was originally meant as an NFS
46 accelerator. Say Y here if you have a DECstation 5000/2x0 or a
47 DECsystem 5900 equipped with such a module.
49 If you want to compile this driver as a module ( = code which can be
50 inserted in and removed from the running kernel whenever you want),
51 say M here and read <file:Documentation/kbuild/modules.txt>.
52 The module will be called ms02-nv.ko.
55 tristate "Support for AT45xxx DataFlash"
56 depends on SPI_MASTER && EXPERIMENTAL
58 This enables access to AT45xxx DataFlash chips, using SPI.
59 Sometimes DataFlash chips are packaged inside MMC-format
60 cards; at this writing, the MMC stack won't handle those.
62 config MTD_DATAFLASH_WRITE_VERIFY
63 bool "Verify DataFlash page writes"
64 depends on MTD_DATAFLASH
66 This adds an extra check when data is written to the flash.
67 It may help if you are verifying chip setup (timings etc) on
68 your board. There is a rare possibility that even though the
69 device thinks the write was successful, a bit could have been
70 flipped accidentally due to device wear or something else.
72 config MTD_DATAFLASH_OTP
73 bool "DataFlash OTP support (Security Register)"
74 depends on MTD_DATAFLASH
77 Newer DataFlash chips (revisions C and D) support 128 bytes of
78 one-time-programmable (OTP) data. The first half may be written
79 (once) with up to 64 bytes of data, such as a serial number or
80 other key product data. The second half is programmed with a
81 unique-to-each-chip bit pattern at the factory.
84 tristate "Support most SPI Flash chips (AT26DF, M25P, W25X, ...)"
85 depends on SPI_MASTER && EXPERIMENTAL
87 This enables access to most modern SPI flash chips, used for
88 program and data storage. Series supported include Atmel AT26DF,
89 Spansion S25SL, SST 25VF, ST M25P, and Winbond W25X. Other chips
90 are supported as well. See the driver source for the current list,
91 or to add other chips.
93 Note that the original DataFlash chips (AT45 series, not AT26DF),
94 need an entirely different driver.
96 Set up your spi devices with the right board-specific platform data,
97 if you want to specify device partitioning or to use a device which
98 doesn't support the JEDEC ID instruction.
100 config M25PXX_USE_FAST_READ
101 bool "Use FAST_READ OPCode allowing SPI CLK <= 50MHz"
102 depends on MTD_M25P80
105 This option enables FAST_READ access supported by ST M25Pxx.
108 tristate "Uncached system RAM"
110 If your CPU cannot cache all of the physical memory in your machine,
111 you can still use it for storage or swap by using this driver to
112 present it to the system as a Memory Technology Device.
115 tristate "Physical system RAM"
117 This is a re-implementation of the slram driver above.
119 Use this driver to access physical memory that the kernel proper
120 doesn't have access to, memory beyond the mem=xxx limit, nvram,
121 memory on the video card, etc...
124 tristate "28F160xx flash driver for LART"
125 depends on SA1100_LART
127 This enables the flash driver for LART. Please note that you do
128 not need any mapping/chip driver for LART. This one does it all
129 for you, so go disable all of those if you enabled some of them (:
132 tristate "Test driver using RAM"
134 This enables a test MTD device driver which uses vmalloc() to
135 provide storage. You probably want to say 'N' unless you're
138 config MTDRAM_TOTAL_SIZE
139 int "MTDRAM device size in KiB"
140 depends on MTD_MTDRAM
143 This allows you to configure the total size of the MTD device
144 emulated by the MTDRAM driver. If the MTDRAM driver is built
145 as a module, it is also possible to specify this as a parameter when
148 config MTDRAM_ERASE_SIZE
149 int "MTDRAM erase block size in KiB"
150 depends on MTD_MTDRAM
153 This allows you to configure the size of the erase blocks in the
154 device emulated by the MTDRAM driver. If the MTDRAM driver is built
155 as a module, it is also possible to specify this as a parameter when
158 #If not a module (I don't want to test it as a module)
159 config MTDRAM_ABS_POS
160 hex "SRAM Hexadecimal Absolute position or 0"
161 depends on MTD_MTDRAM=y
164 If you have system RAM accessible by the CPU but not used by Linux
165 in normal operation, you can give the physical address at which the
166 available RAM starts, and the MTDRAM driver will use it instead of
167 allocating space from Linux's available memory. Otherwise, leave
168 this set to zero. Most people will want to leave this as zero.
171 tristate "MTD using block device"
174 This driver allows a block device to appear as an MTD. It would
175 generally be used in the following cases:
177 Using Compact Flash as an MTD, these usually present themselves to
178 the system as an ATA drive.
179 Testing MTD users (eg JFFS2) on large media and media that might
180 be removed during a write (using the floppy drive).
182 comment "Disk-On-Chip Device Drivers"
185 tristate "M-Systems Disk-On-Chip 2000 and Millennium (DEPRECATED)"
189 This provides an MTD device driver for the M-Systems DiskOnChip
190 2000 and Millennium devices. Originally designed for the DiskOnChip
191 2000, it also now includes support for the DiskOnChip Millennium.
192 If you have problems with this driver and the DiskOnChip Millennium,
193 you may wish to try the alternative Millennium driver below. To use
194 the alternative driver, you will need to undefine DOC_SINGLE_DRIVER
195 in the <file:drivers/mtd/devices/docprobe.c> source code.
197 If you use this device, you probably also want to enable the NFTL
198 'NAND Flash Translation Layer' option below, which is used to
199 emulate a block device by using a kind of file system on the flash
202 NOTE: This driver is deprecated and will probably be removed soon.
203 Please try the new DiskOnChip driver under "NAND Flash Device
207 tristate "M-Systems Disk-On-Chip Millennium-only alternative driver (DEPRECATED)"
211 This provides an alternative MTD device driver for the M-Systems
212 DiskOnChip Millennium devices. Use this if you have problems with
213 the combined DiskOnChip 2000 and Millennium driver above. To get
214 the DiskOnChip probe code to load and use this driver instead of
215 the other one, you will need to undefine DOC_SINGLE_DRIVER near
216 the beginning of <file:drivers/mtd/devices/docprobe.c>.
218 If you use this device, you probably also want to enable the NFTL
219 'NAND Flash Translation Layer' option below, which is used to
220 emulate a block device by using a kind of file system on the flash
223 NOTE: This driver is deprecated and will probably be removed soon.
224 Please try the new DiskOnChip driver under "NAND Flash Device
227 config MTD_DOC2001PLUS
228 tristate "M-Systems Disk-On-Chip Millennium Plus"
232 This provides an MTD device driver for the M-Systems DiskOnChip
233 Millennium Plus devices.
235 If you use this device, you probably also want to enable the INFTL
236 'Inverse NAND Flash Translation Layer' option below, which is used
237 to emulate a block device by using a kind of file system on the
240 NOTE: This driver will soon be replaced by the new DiskOnChip driver
241 under "NAND Flash Device Drivers" (currently that driver does not
242 support all Millennium Plus devices).
251 config MTD_DOCPROBE_ADVANCED
252 bool "Advanced detection options for DiskOnChip"
253 depends on MTD_DOCPROBE
255 This option allows you to specify nonstandard address at which to
256 probe for a DiskOnChip, or to change the detection options. You
257 are unlikely to need any of this unless you are using LinuxBIOS.
260 config MTD_DOCPROBE_ADDRESS
261 hex "Physical address of DiskOnChip" if MTD_DOCPROBE_ADVANCED
262 depends on MTD_DOCPROBE
263 default "0x0000" if MTD_DOCPROBE_ADVANCED
264 default "0" if !MTD_DOCPROBE_ADVANCED
266 By default, the probe for DiskOnChip devices will look for a
267 DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
268 This option allows you to specify a single address at which to probe
269 for the device, which is useful if you have other devices in that
270 range which get upset when they are probed.
272 (Note that on PowerPC, the normal probe will only check at
275 Normally, you should leave this set to zero, to allow the probe at
276 the normal addresses.
278 config MTD_DOCPROBE_HIGH
279 bool "Probe high addresses"
280 depends on MTD_DOCPROBE_ADVANCED
282 By default, the probe for DiskOnChip devices will look for a
283 DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
284 This option changes to make it probe between 0xFFFC8000 and
285 0xFFFEE000. Unless you are using LinuxBIOS, this is unlikely to be
286 useful to you. Say 'N'.
288 config MTD_DOCPROBE_55AA
289 bool "Probe for 0x55 0xAA BIOS Extension Signature"
290 depends on MTD_DOCPROBE_ADVANCED
292 Check for the 0x55 0xAA signature of a DiskOnChip, and do not
293 continue with probing if it is absent. The signature will always be
294 present for a DiskOnChip 2000 or a normal DiskOnChip Millennium.
295 Only if you have overwritten the first block of a DiskOnChip
296 Millennium will it be absent. Enable this option if you are using
297 LinuxBIOS or if you need to recover a DiskOnChip Millennium on which
298 you have managed to wipe the first block.