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.
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 "Support SST25L (non JEDEC) SPI Flash chips"
109 depends on SPI_MASTER
111 This enables access to the non JEDEC SST25L SPI flash chips, used
112 for program and data storage.
114 Set up your spi devices with the right board-specific platform data,
115 if you want to specify device partitioning.
118 tristate "Uncached system RAM"
120 If your CPU cannot cache all of the physical memory in your machine,
121 you can still use it for storage or swap by using this driver to
122 present it to the system as a Memory Technology Device.
125 tristate "Physical system RAM"
127 This is a re-implementation of the slram driver above.
129 Use this driver to access physical memory that the kernel proper
130 doesn't have access to, memory beyond the mem=xxx limit, nvram,
131 memory on the video card, etc...
134 tristate "28F160xx flash driver for LART"
135 depends on SA1100_LART
137 This enables the flash driver for LART. Please note that you do
138 not need any mapping/chip driver for LART. This one does it all
139 for you, so go disable all of those if you enabled some of them (:
142 tristate "Test driver using RAM"
144 This enables a test MTD device driver which uses vmalloc() to
145 provide storage. You probably want to say 'N' unless you're
148 config MTDRAM_TOTAL_SIZE
149 int "MTDRAM device size in KiB"
150 depends on MTD_MTDRAM
153 This allows you to configure the total size of the MTD device
154 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 config MTDRAM_ERASE_SIZE
159 int "MTDRAM erase block size in KiB"
160 depends on MTD_MTDRAM
163 This allows you to configure the size of the erase blocks in the
164 device emulated by the MTDRAM driver. If the MTDRAM driver is built
165 as a module, it is also possible to specify this as a parameter when
168 #If not a module (I don't want to test it as a module)
169 config MTDRAM_ABS_POS
170 hex "SRAM Hexadecimal Absolute position or 0"
171 depends on MTD_MTDRAM=y
174 If you have system RAM accessible by the CPU but not used by Linux
175 in normal operation, you can give the physical address at which the
176 available RAM starts, and the MTDRAM driver will use it instead of
177 allocating space from Linux's available memory. Otherwise, leave
178 this set to zero. Most people will want to leave this as zero.
181 tristate "MTD using block device"
184 This driver allows a block device to appear as an MTD. It would
185 generally be used in the following cases:
187 Using Compact Flash as an MTD, these usually present themselves to
188 the system as an ATA drive.
189 Testing MTD users (eg JFFS2) on large media and media that might
190 be removed during a write (using the floppy drive).
192 comment "Disk-On-Chip Device Drivers"
195 tristate "M-Systems Disk-On-Chip 2000 and Millennium (DEPRECATED)"
199 This provides an MTD device driver for the M-Systems DiskOnChip
200 2000 and Millennium devices. Originally designed for the DiskOnChip
201 2000, it also now includes support for the DiskOnChip Millennium.
202 If you have problems with this driver and the DiskOnChip Millennium,
203 you may wish to try the alternative Millennium driver below. To use
204 the alternative driver, you will need to undefine DOC_SINGLE_DRIVER
205 in the <file:drivers/mtd/devices/docprobe.c> source code.
207 If you use this device, you probably also want to enable the NFTL
208 'NAND Flash Translation Layer' option below, which is used to
209 emulate a block device by using a kind of file system on the flash
212 NOTE: This driver is deprecated and will probably be removed soon.
213 Please try the new DiskOnChip driver under "NAND Flash Device
217 tristate "M-Systems Disk-On-Chip Millennium-only alternative driver (DEPRECATED)"
221 This provides an alternative MTD device driver for the M-Systems
222 DiskOnChip Millennium devices. Use this if you have problems with
223 the combined DiskOnChip 2000 and Millennium driver above. To get
224 the DiskOnChip probe code to load and use this driver instead of
225 the other one, you will need to undefine DOC_SINGLE_DRIVER near
226 the beginning of <file:drivers/mtd/devices/docprobe.c>.
228 If you use this device, you probably also want to enable the NFTL
229 'NAND Flash Translation Layer' option below, which is used to
230 emulate a block device by using a kind of file system on the flash
233 NOTE: This driver is deprecated and will probably be removed soon.
234 Please try the new DiskOnChip driver under "NAND Flash Device
237 config MTD_DOC2001PLUS
238 tristate "M-Systems Disk-On-Chip Millennium Plus"
242 This provides an MTD device driver for the M-Systems DiskOnChip
243 Millennium Plus devices.
245 If you use this device, you probably also want to enable the INFTL
246 'Inverse NAND Flash Translation Layer' option below, which is used
247 to emulate a block device by using a kind of file system on the
250 NOTE: This driver will soon be replaced by the new DiskOnChip driver
251 under "NAND Flash Device Drivers" (currently that driver does not
252 support all Millennium Plus devices).
261 config MTD_DOCPROBE_ADVANCED
262 bool "Advanced detection options for DiskOnChip"
263 depends on MTD_DOCPROBE
265 This option allows you to specify nonstandard address at which to
266 probe for a DiskOnChip, or to change the detection options. You
267 are unlikely to need any of this unless you are using LinuxBIOS.
270 config MTD_DOCPROBE_ADDRESS
271 hex "Physical address of DiskOnChip" if MTD_DOCPROBE_ADVANCED
272 depends on MTD_DOCPROBE
273 default "0x0000" if MTD_DOCPROBE_ADVANCED
274 default "0" if !MTD_DOCPROBE_ADVANCED
276 By default, the probe for DiskOnChip devices will look for a
277 DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
278 This option allows you to specify a single address at which to probe
279 for the device, which is useful if you have other devices in that
280 range which get upset when they are probed.
282 (Note that on PowerPC, the normal probe will only check at
285 Normally, you should leave this set to zero, to allow the probe at
286 the normal addresses.
288 config MTD_DOCPROBE_HIGH
289 bool "Probe high addresses"
290 depends on MTD_DOCPROBE_ADVANCED
292 By default, the probe for DiskOnChip devices will look for a
293 DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
294 This option changes to make it probe between 0xFFFC8000 and
295 0xFFFEE000. Unless you are using LinuxBIOS, this is unlikely to be
296 useful to you. Say 'N'.
298 config MTD_DOCPROBE_55AA
299 bool "Probe for 0x55 0xAA BIOS Extension Signature"
300 depends on MTD_DOCPROBE_ADVANCED
302 Check for the 0x55 0xAA signature of a DiskOnChip, and do not
303 continue with probing if it is absent. The signature will always be
304 present for a DiskOnChip 2000 or a normal DiskOnChip Millennium.
305 Only if you have overwritten the first block of a DiskOnChip
306 Millennium will it be absent. Enable this option if you are using
307 LinuxBIOS or if you need to recover a DiskOnChip Millennium on which
308 you have managed to wipe the first block.