1 # drivers/mtd/maps/Kconfig
2 # $Id: Kconfig,v 1.18 2005/11/07 11:14:24 gleixner Exp $
4 menu "Self-contained MTD device drivers"
8 tristate "Ramix PMC551 PCI Mezzanine RAM card support"
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.
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.
25 config MTD_PMC551_BUGFIX
26 bool "PMC551 256M DRAM Bugfix"
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.
33 config MTD_PMC551_DEBUG
34 bool "PMC551 Debugging"
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.
42 tristate "DEC MS02-NV NVRAM module support"
43 depends on MACH_DECSTATION
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.
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/kbuild/modules.txt>.
53 The module will be called ms02-nv.ko.
56 tristate "Support for AT45xxx DataFlash"
57 depends on SPI_MASTER && EXPERIMENTAL
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.
64 tristate "Support most SPI Flash chips (AT26DF, M25P, W25X, ...)"
65 depends on SPI_MASTER && EXPERIMENTAL
67 This enables access to most modern SPI flash chips, used for
68 program and data storage. Series supported include Atmel AT26DF,
69 Spansion S25SL, SST 25VF, ST M25P, and Winbond W25X. Other chips
70 are supported as well. See the driver source for the current list,
71 or to add other chips.
73 Note that the original DataFlash chips (AT45 series, not AT26DF),
74 need an entirely different driver.
76 Set up your spi devices with the right board-specific platform data,
77 if you want to specify device partitioning or to use a device which
78 doesn't support the JEDEC ID instruction.
80 config M25PXX_USE_FAST_READ
81 bool "Use FAST_READ OPCode allowing SPI CLK <= 50MHz"
85 This option enables FAST_READ access supported by ST M25Pxx.
88 tristate "Uncached system RAM"
90 If your CPU cannot cache all of the physical memory in your machine,
91 you can still use it for storage or swap by using this driver to
92 present it to the system as a Memory Technology Device.
95 tristate "Physical system RAM"
97 This is a re-implementation of the slram driver above.
99 Use this driver to access physical memory that the kernel proper
100 doesn't have access to, memory beyond the mem=xxx limit, nvram,
101 memory on the video card, etc...
104 tristate "28F160xx flash driver for LART"
105 depends on SA1100_LART
107 This enables the flash driver for LART. Please note that you do
108 not need any mapping/chip driver for LART. This one does it all
109 for you, so go disable all of those if you enabled some of them (:
112 tristate "Test driver using RAM"
114 This enables a test MTD device driver which uses vmalloc() to
115 provide storage. You probably want to say 'N' unless you're
118 config MTDRAM_TOTAL_SIZE
119 int "MTDRAM device size in KiB"
120 depends on MTD_MTDRAM
123 This allows you to configure the total size of the MTD device
124 emulated by the MTDRAM driver. If the MTDRAM driver is built
125 as a module, it is also possible to specify this as a parameter when
128 config MTDRAM_ERASE_SIZE
129 int "MTDRAM erase block size in KiB"
130 depends on MTD_MTDRAM
133 This allows you to configure the size of the erase blocks in the
134 device emulated by the MTDRAM driver. If the MTDRAM driver is built
135 as a module, it is also possible to specify this as a parameter when
138 #If not a module (I don't want to test it as a module)
139 config MTDRAM_ABS_POS
140 hex "SRAM Hexadecimal Absolute position or 0"
141 depends on MTD_MTDRAM=y
144 If you have system RAM accessible by the CPU but not used by Linux
145 in normal operation, you can give the physical address at which the
146 available RAM starts, and the MTDRAM driver will use it instead of
147 allocating space from Linux's available memory. Otherwise, leave
148 this set to zero. Most people will want to leave this as zero.
151 tristate "MTD using block device"
154 This driver allows a block device to appear as an MTD. It would
155 generally be used in the following cases:
157 Using Compact Flash as an MTD, these usually present themselves to
158 the system as an ATA drive.
159 Testing MTD users (eg JFFS2) on large media and media that might
160 be removed during a write (using the floppy drive).
162 comment "Disk-On-Chip Device Drivers"
165 tristate "M-Systems Disk-On-Chip 2000 and Millennium (DEPRECATED)"
169 This provides an MTD device driver for the M-Systems DiskOnChip
170 2000 and Millennium devices. Originally designed for the DiskOnChip
171 2000, it also now includes support for the DiskOnChip Millennium.
172 If you have problems with this driver and the DiskOnChip Millennium,
173 you may wish to try the alternative Millennium driver below. To use
174 the alternative driver, you will need to undefine DOC_SINGLE_DRIVER
175 in the <file:drivers/mtd/devices/docprobe.c> source code.
177 If you use this device, you probably also want to enable the NFTL
178 'NAND Flash Translation Layer' option below, which is used to
179 emulate a block device by using a kind of file system on the flash
182 NOTE: This driver is deprecated and will probably be removed soon.
183 Please try the new DiskOnChip driver under "NAND Flash Device
187 tristate "M-Systems Disk-On-Chip Millennium-only alternative driver (DEPRECATED)"
191 This provides an alternative MTD device driver for the M-Systems
192 DiskOnChip Millennium devices. Use this if you have problems with
193 the combined DiskOnChip 2000 and Millennium driver above. To get
194 the DiskOnChip probe code to load and use this driver instead of
195 the other one, you will need to undefine DOC_SINGLE_DRIVER near
196 the beginning of <file:drivers/mtd/devices/docprobe.c>.
198 If you use this device, you probably also want to enable the NFTL
199 'NAND Flash Translation Layer' option below, which is used to
200 emulate a block device by using a kind of file system on the flash
203 NOTE: This driver is deprecated and will probably be removed soon.
204 Please try the new DiskOnChip driver under "NAND Flash Device
207 config MTD_DOC2001PLUS
208 tristate "M-Systems Disk-On-Chip Millennium Plus"
212 This provides an MTD device driver for the M-Systems DiskOnChip
213 Millennium Plus devices.
215 If you use this device, you probably also want to enable the INFTL
216 'Inverse NAND Flash Translation Layer' option below, which is used
217 to emulate a block device by using a kind of file system on the
220 NOTE: This driver will soon be replaced by the new DiskOnChip driver
221 under "NAND Flash Device Drivers" (currently that driver does not
222 support all Millennium Plus devices).
231 config MTD_DOCPROBE_ADVANCED
232 bool "Advanced detection options for DiskOnChip"
233 depends on MTD_DOCPROBE
235 This option allows you to specify nonstandard address at which to
236 probe for a DiskOnChip, or to change the detection options. You
237 are unlikely to need any of this unless you are using LinuxBIOS.
240 config MTD_DOCPROBE_ADDRESS
241 hex "Physical address of DiskOnChip" if MTD_DOCPROBE_ADVANCED
242 depends on MTD_DOCPROBE
243 default "0x0000" if MTD_DOCPROBE_ADVANCED
244 default "0" if !MTD_DOCPROBE_ADVANCED
246 By default, the probe for DiskOnChip devices will look for a
247 DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
248 This option allows you to specify a single address at which to probe
249 for the device, which is useful if you have other devices in that
250 range which get upset when they are probed.
252 (Note that on PowerPC, the normal probe will only check at
255 Normally, you should leave this set to zero, to allow the probe at
256 the normal addresses.
258 config MTD_DOCPROBE_HIGH
259 bool "Probe high addresses"
260 depends on MTD_DOCPROBE_ADVANCED
262 By default, the probe for DiskOnChip devices will look for a
263 DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
264 This option changes to make it probe between 0xFFFC8000 and
265 0xFFFEE000. Unless you are using LinuxBIOS, this is unlikely to be
266 useful to you. Say 'N'.
268 config MTD_DOCPROBE_55AA
269 bool "Probe for 0x55 0xAA BIOS Extension Signature"
270 depends on MTD_DOCPROBE_ADVANCED
272 Check for the 0x55 0xAA signature of a DiskOnChip, and do not
273 continue with probing if it is absent. The signature will always be
274 present for a DiskOnChip 2000 or a normal DiskOnChip Millennium.
275 Only if you have overwritten the first block of a DiskOnChip
276 Millennium will it be absent. Enable this option if you are using
277 LinuxBIOS or if you need to recover a DiskOnChip Millennium on which
278 you have managed to wipe the first block.