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 "PS3 video RAM"
127 This driver allows you to use excess PS3 video RAM as volatile
128 storage or system swap.
131 tristate "28F160xx flash driver for LART"
132 depends on SA1100_LART
134 This enables the flash driver for LART. Please note that you do
135 not need any mapping/chip driver for LART. This one does it all
136 for you, so go disable all of those if you enabled some of them (:
139 tristate "Test driver using RAM"
141 This enables a test MTD device driver which uses vmalloc() to
142 provide storage. You probably want to say 'N' unless you're
145 config MTDRAM_TOTAL_SIZE
146 int "MTDRAM device size in KiB"
147 depends on MTD_MTDRAM
150 This allows you to configure the total size of the MTD device
151 emulated by the MTDRAM driver. If the MTDRAM driver is built
152 as a module, it is also possible to specify this as a parameter when
155 config MTDRAM_ERASE_SIZE
156 int "MTDRAM erase block size in KiB"
157 depends on MTD_MTDRAM
160 This allows you to configure the size of the erase blocks in the
161 device emulated by the MTDRAM driver. If the MTDRAM driver is built
162 as a module, it is also possible to specify this as a parameter when
165 #If not a module (I don't want to test it as a module)
166 config MTDRAM_ABS_POS
167 hex "SRAM Hexadecimal Absolute position or 0"
168 depends on MTD_MTDRAM=y
171 If you have system RAM accessible by the CPU but not used by Linux
172 in normal operation, you can give the physical address at which the
173 available RAM starts, and the MTDRAM driver will use it instead of
174 allocating space from Linux's available memory. Otherwise, leave
175 this set to zero. Most people will want to leave this as zero.
178 tristate "MTD using block device"
181 This driver allows a block device to appear as an MTD. It would
182 generally be used in the following cases:
184 Using Compact Flash as an MTD, these usually present themselves to
185 the system as an ATA drive.
186 Testing MTD users (eg JFFS2) on large media and media that might
187 be removed during a write (using the floppy drive).
189 comment "Disk-On-Chip Device Drivers"
192 tristate "M-Systems Disk-On-Chip 2000 and Millennium (DEPRECATED)"
196 This provides an MTD device driver for the M-Systems DiskOnChip
197 2000 and Millennium devices. Originally designed for the DiskOnChip
198 2000, it also now includes support for the DiskOnChip Millennium.
199 If you have problems with this driver and the DiskOnChip Millennium,
200 you may wish to try the alternative Millennium driver below. To use
201 the alternative driver, you will need to undefine DOC_SINGLE_DRIVER
202 in the <file:drivers/mtd/devices/docprobe.c> source code.
204 If you use this device, you probably also want to enable the NFTL
205 'NAND Flash Translation Layer' option below, which is used to
206 emulate a block device by using a kind of file system on the flash
209 NOTE: This driver is deprecated and will probably be removed soon.
210 Please try the new DiskOnChip driver under "NAND Flash Device
214 tristate "M-Systems Disk-On-Chip Millennium-only alternative driver (DEPRECATED)"
218 This provides an alternative MTD device driver for the M-Systems
219 DiskOnChip Millennium devices. Use this if you have problems with
220 the combined DiskOnChip 2000 and Millennium driver above. To get
221 the DiskOnChip probe code to load and use this driver instead of
222 the other one, you will need to undefine DOC_SINGLE_DRIVER near
223 the beginning of <file:drivers/mtd/devices/docprobe.c>.
225 If you use this device, you probably also want to enable the NFTL
226 'NAND Flash Translation Layer' option below, which is used to
227 emulate a block device by using a kind of file system on the flash
230 NOTE: This driver is deprecated and will probably be removed soon.
231 Please try the new DiskOnChip driver under "NAND Flash Device
234 config MTD_DOC2001PLUS
235 tristate "M-Systems Disk-On-Chip Millennium Plus"
239 This provides an MTD device driver for the M-Systems DiskOnChip
240 Millennium Plus devices.
242 If you use this device, you probably also want to enable the INFTL
243 'Inverse NAND Flash Translation Layer' option below, which is used
244 to emulate a block device by using a kind of file system on the
247 NOTE: This driver will soon be replaced by the new DiskOnChip driver
248 under "NAND Flash Device Drivers" (currently that driver does not
249 support all Millennium Plus devices).
258 config MTD_DOCPROBE_ADVANCED
259 bool "Advanced detection options for DiskOnChip"
260 depends on MTD_DOCPROBE
262 This option allows you to specify nonstandard address at which to
263 probe for a DiskOnChip, or to change the detection options. You
264 are unlikely to need any of this unless you are using LinuxBIOS.
267 config MTD_DOCPROBE_ADDRESS
268 hex "Physical address of DiskOnChip" if MTD_DOCPROBE_ADVANCED
269 depends on MTD_DOCPROBE
270 default "0x0000" if MTD_DOCPROBE_ADVANCED
271 default "0" if !MTD_DOCPROBE_ADVANCED
273 By default, the probe for DiskOnChip devices will look for a
274 DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
275 This option allows you to specify a single address at which to probe
276 for the device, which is useful if you have other devices in that
277 range which get upset when they are probed.
279 (Note that on PowerPC, the normal probe will only check at
282 Normally, you should leave this set to zero, to allow the probe at
283 the normal addresses.
285 config MTD_DOCPROBE_HIGH
286 bool "Probe high addresses"
287 depends on MTD_DOCPROBE_ADVANCED
289 By default, the probe for DiskOnChip devices will look for a
290 DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
291 This option changes to make it probe between 0xFFFC8000 and
292 0xFFFEE000. Unless you are using LinuxBIOS, this is unlikely to be
293 useful to you. Say 'N'.
295 config MTD_DOCPROBE_55AA
296 bool "Probe for 0x55 0xAA BIOS Extension Signature"
297 depends on MTD_DOCPROBE_ADVANCED
299 Check for the 0x55 0xAA signature of a DiskOnChip, and do not
300 continue with probing if it is absent. The signature will always be
301 present for a DiskOnChip 2000 or a normal DiskOnChip Millennium.
302 Only if you have overwritten the first block of a DiskOnChip
303 Millennium will it be absent. Enable this option if you are using
304 LinuxBIOS or if you need to recover a DiskOnChip Millennium on which
305 you have managed to wipe the first block.