1 menu "Self-contained MTD device drivers"
5 tristate "Ramix PMC551 PCI Mezzanine RAM card support"
8 This provides a MTD device driver for the Ramix PMC551 RAM PCI card
9 from Ramix Inc. <http://www.ramix.com/products/memory/pmc551.html>.
10 These devices come in memory configurations from 32M - 1G. If you
11 have one, you probably want to enable this.
13 If this driver is compiled as a module you get the ability to select
14 the size of the aperture window pointing into the devices memory.
15 What this means is that if you have a 1G card, normally the kernel
16 will use a 1G memory map as its view of the device. As a module,
17 you can select a 1M window into the memory and the driver will
18 "slide" the window around the PMC551's memory. This was
19 particularly useful on the 2.2 kernels on PPC architectures as there
20 was limited kernel space to deal with.
22 config MTD_PMC551_BUGFIX
23 bool "PMC551 256M DRAM Bugfix"
26 Some of Ramix's PMC551 boards with 256M configurations have invalid
27 column and row mux values. This option will fix them, but will
28 break other memory configurations. If unsure say N.
30 config MTD_PMC551_DEBUG
31 bool "PMC551 Debugging"
34 This option makes the PMC551 more verbose during its operation and
35 is only really useful if you are developing on this driver or
36 suspect a possible hardware or driver bug. If unsure say N.
39 tristate "DEC MS02-NV NVRAM module support"
40 depends on MACH_DECSTATION
42 This is an MTD driver for the DEC's MS02-NV (54-20948-01) battery
43 backed-up NVRAM module. The module was originally meant as an NFS
44 accelerator. Say Y here if you have a DECstation 5000/2x0 or a
45 DECsystem 5900 equipped with such a module.
47 If you want to compile this driver as a module ( = code which can be
48 inserted in and removed from the running kernel whenever you want),
49 say M here and read <file:Documentation/kbuild/modules.txt>.
50 The module will be called ms02-nv.
53 tristate "Support for AT45xxx DataFlash"
54 depends on SPI_MASTER && EXPERIMENTAL
56 This enables access to AT45xxx DataFlash chips, using SPI.
57 Sometimes DataFlash chips are packaged inside MMC-format
58 cards; at this writing, the MMC stack won't handle those.
60 config MTD_DATAFLASH_WRITE_VERIFY
61 bool "Verify DataFlash page writes"
62 depends on MTD_DATAFLASH
64 This adds an extra check when data is written to the flash.
65 It may help if you are verifying chip setup (timings etc) on
66 your board. There is a rare possibility that even though the
67 device thinks the write was successful, a bit could have been
68 flipped accidentally due to device wear or something else.
70 config MTD_DATAFLASH_OTP
71 bool "DataFlash OTP support (Security Register)"
72 depends on MTD_DATAFLASH
75 Newer DataFlash chips (revisions C and D) support 128 bytes of
76 one-time-programmable (OTP) data. The first half may be written
77 (once) with up to 64 bytes of data, such as a serial number or
78 other key product data. The second half is programmed with a
79 unique-to-each-chip bit pattern at the factory.
82 tristate "Support most SPI Flash chips (AT26DF, M25P, W25X, ...)"
83 depends on SPI_MASTER && EXPERIMENTAL
85 This enables access to most modern SPI flash chips, used for
86 program and data storage. Series supported include Atmel AT26DF,
87 Spansion S25SL, SST 25VF, ST M25P, and Winbond W25X. Other chips
88 are supported as well. See the driver source for the current list,
89 or to add other chips.
91 Note that the original DataFlash chips (AT45 series, not AT26DF),
92 need an entirely different driver.
94 Set up your spi devices with the right board-specific platform data,
95 if you want to specify device partitioning or to use a device which
96 doesn't support the JEDEC ID instruction.
98 config M25PXX_USE_FAST_READ
99 bool "Use FAST_READ OPCode allowing SPI CLK <= 50MHz"
100 depends on MTD_M25P80
103 This option enables FAST_READ access supported by ST M25Pxx.
106 tristate "Support SST25L (non JEDEC) SPI Flash chips"
107 depends on SPI_MASTER
109 This enables access to the non JEDEC SST25L SPI flash chips, used
110 for program and data storage.
112 Set up your spi devices with the right board-specific platform data,
113 if you want to specify device partitioning.
116 tristate "Uncached system RAM"
118 If your CPU cannot cache all of the physical memory in your machine,
119 you can still use it for storage or swap by using this driver to
120 present it to the system as a Memory Technology Device.
123 tristate "Physical system RAM"
125 This is a re-implementation of the slram driver above.
127 Use this driver to access physical memory that the kernel proper
128 doesn't have access to, memory beyond the mem=xxx limit, nvram,
129 memory on the video card, etc...
132 tristate "28F160xx flash driver for LART"
133 depends on SA1100_LART
135 This enables the flash driver for LART. Please note that you do
136 not need any mapping/chip driver for LART. This one does it all
137 for you, so go disable all of those if you enabled some of them (:
140 tristate "Test driver using RAM"
142 This enables a test MTD device driver which uses vmalloc() to
143 provide storage. You probably want to say 'N' unless you're
146 config MTDRAM_TOTAL_SIZE
147 int "MTDRAM device size in KiB"
148 depends on MTD_MTDRAM
151 This allows you to configure the total size of the MTD device
152 emulated by the MTDRAM driver. If the MTDRAM driver is built
153 as a module, it is also possible to specify this as a parameter when
156 config MTDRAM_ERASE_SIZE
157 int "MTDRAM erase block size in KiB"
158 depends on MTD_MTDRAM
161 This allows you to configure the size of the erase blocks in the
162 device emulated by the MTDRAM driver. If the MTDRAM driver is built
163 as a module, it is also possible to specify this as a parameter when
166 #If not a module (I don't want to test it as a module)
167 config MTDRAM_ABS_POS
168 hex "SRAM Hexadecimal Absolute position or 0"
169 depends on MTD_MTDRAM=y
172 If you have system RAM accessible by the CPU but not used by Linux
173 in normal operation, you can give the physical address at which the
174 available RAM starts, and the MTDRAM driver will use it instead of
175 allocating space from Linux's available memory. Otherwise, leave
176 this set to zero. Most people will want to leave this as zero.
179 tristate "MTD using block device"
182 This driver allows a block device to appear as an MTD. It would
183 generally be used in the following cases:
185 Using Compact Flash as an MTD, these usually present themselves to
186 the system as an ATA drive.
187 Testing MTD users (eg JFFS2) on large media and media that might
188 be removed during a write (using the floppy drive).
190 comment "Disk-On-Chip Device Drivers"
193 tristate "M-Systems Disk-On-Chip 2000 and Millennium (DEPRECATED)"
197 This provides an MTD device driver for the M-Systems DiskOnChip
198 2000 and Millennium devices. Originally designed for the DiskOnChip
199 2000, it also now includes support for the DiskOnChip Millennium.
200 If you have problems with this driver and the DiskOnChip Millennium,
201 you may wish to try the alternative Millennium driver below. To use
202 the alternative driver, you will need to undefine DOC_SINGLE_DRIVER
203 in the <file:drivers/mtd/devices/docprobe.c> source code.
205 If you use this device, you probably also want to enable the NFTL
206 'NAND Flash Translation Layer' option below, which is used to
207 emulate a block device by using a kind of file system on the flash
210 NOTE: This driver is deprecated and will probably be removed soon.
211 Please try the new DiskOnChip driver under "NAND Flash Device
215 tristate "M-Systems Disk-On-Chip Millennium-only alternative driver (DEPRECATED)"
219 This provides an alternative MTD device driver for the M-Systems
220 DiskOnChip Millennium devices. Use this if you have problems with
221 the combined DiskOnChip 2000 and Millennium driver above. To get
222 the DiskOnChip probe code to load and use this driver instead of
223 the other one, you will need to undefine DOC_SINGLE_DRIVER near
224 the beginning of <file:drivers/mtd/devices/docprobe.c>.
226 If you use this device, you probably also want to enable the NFTL
227 'NAND Flash Translation Layer' option below, which is used to
228 emulate a block device by using a kind of file system on the flash
231 NOTE: This driver is deprecated and will probably be removed soon.
232 Please try the new DiskOnChip driver under "NAND Flash Device
235 config MTD_DOC2001PLUS
236 tristate "M-Systems Disk-On-Chip Millennium Plus"
240 This provides an MTD device driver for the M-Systems DiskOnChip
241 Millennium Plus devices.
243 If you use this device, you probably also want to enable the INFTL
244 'Inverse NAND Flash Translation Layer' option below, which is used
245 to emulate a block device by using a kind of file system on the
248 NOTE: This driver will soon be replaced by the new DiskOnChip driver
249 under "NAND Flash Device Drivers" (currently that driver does not
250 support all Millennium Plus devices).
259 config MTD_DOCPROBE_ADVANCED
260 bool "Advanced detection options for DiskOnChip"
261 depends on MTD_DOCPROBE
263 This option allows you to specify nonstandard address at which to
264 probe for a DiskOnChip, or to change the detection options. You
265 are unlikely to need any of this unless you are using LinuxBIOS.
268 config MTD_DOCPROBE_ADDRESS
269 hex "Physical address of DiskOnChip" if MTD_DOCPROBE_ADVANCED
270 depends on MTD_DOCPROBE
271 default "0x0000" if MTD_DOCPROBE_ADVANCED
272 default "0" if !MTD_DOCPROBE_ADVANCED
274 By default, the probe for DiskOnChip devices will look for a
275 DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
276 This option allows you to specify a single address at which to probe
277 for the device, which is useful if you have other devices in that
278 range which get upset when they are probed.
280 (Note that on PowerPC, the normal probe will only check at
283 Normally, you should leave this set to zero, to allow the probe at
284 the normal addresses.
286 config MTD_DOCPROBE_HIGH
287 bool "Probe high addresses"
288 depends on MTD_DOCPROBE_ADVANCED
290 By default, the probe for DiskOnChip devices will look for a
291 DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
292 This option changes to make it probe between 0xFFFC8000 and
293 0xFFFEE000. Unless you are using LinuxBIOS, this is unlikely to be
294 useful to you. Say 'N'.
296 config MTD_DOCPROBE_55AA
297 bool "Probe for 0x55 0xAA BIOS Extension Signature"
298 depends on MTD_DOCPROBE_ADVANCED
300 Check for the 0x55 0xAA signature of a DiskOnChip, and do not
301 continue with probing if it is absent. The signature will always be
302 present for a DiskOnChip 2000 or a normal DiskOnChip Millennium.
303 Only if you have overwritten the first block of a DiskOnChip
304 Millennium will it be absent. Enable this option if you are using
305 LinuxBIOS or if you need to recover a DiskOnChip Millennium on which
306 you have managed to wipe the first block.