1 # drivers/mtd/nand/Kconfig
2 # $Id: Kconfig,v 1.35 2005/11/07 11:14:30 gleixner Exp $
4 menu "NAND Flash Device Drivers"
8 tristate "NAND Device Support"
12 This enables support for accessing all type of NAND flash
13 devices. For further information see
14 <http://www.linux-mtd.infradead.org/doc/nand.html>.
16 config MTD_NAND_VERIFY_WRITE
17 bool "Verify NAND page writes"
20 This adds an extra check when data is written to the flash. The
21 NAND flash device internally checks only bits transitioning
22 from 1 to 0. There is a rare possibility that even though the
23 device thinks the write was successful, a bit could have been
24 flipped accidentally due to device wear or something else.
26 config MTD_NAND_ECC_SMC
27 bool "NAND ECC Smart Media byte order"
31 Software ECC according to the Smart Media Specification.
32 The original Linux implementation had byte 0 and 1 swapped.
34 config MTD_NAND_AUTCPU12
35 tristate "SmartMediaCard on autronix autcpu12 board"
36 depends on MTD_NAND && ARCH_AUTCPU12
38 This enables the driver for the autronix autcpu12 board to
39 access the SmartMediaCard.
41 config MTD_NAND_EDB7312
42 tristate "Support for Cirrus Logic EBD7312 evaluation board"
43 depends on MTD_NAND && ARCH_EDB7312
45 This enables the driver for the Cirrus Logic EBD7312 evaluation
46 board to access the onboard NAND Flash.
49 tristate "iPAQ H1900 flash"
50 depends on MTD_NAND && ARCH_PXA && MTD_PARTITIONS
52 This enables the driver for the iPAQ h1900 flash.
55 tristate "NAND Flash device on SPIA board"
56 depends on ARCH_P720T && MTD_NAND
58 If you had to ask, you don't have one. Say 'N'.
60 config MTD_NAND_AMS_DELTA
61 tristate "NAND Flash device on Amstrad E3"
62 depends on MACH_AMS_DELTA && MTD_NAND
64 Support for NAND flash on Amstrad E3 (Delta).
67 tristate "NAND Flash device on TOTO board"
68 depends on ARCH_OMAP && MTD_NAND && BROKEN
70 Support for NAND flash on Texas Instruments Toto platform.
72 config MTD_NAND_TS7250
73 tristate "NAND Flash device on TS-7250 board"
74 depends on MACH_TS72XX && MTD_NAND
76 Support for NAND flash on Technologic Systems TS-7250 platform.
81 config MTD_NAND_AU1550
82 tristate "Au1550/1200 NAND support"
83 depends on (SOC_AU1200 || SOC_AU1550) && MTD_NAND
85 This enables the driver for the NAND flash controller on the
88 config MTD_NAND_RTC_FROM4
89 tristate "Renesas Flash ROM 4-slot interface board (FROM_BOARD4)"
90 depends on MTD_NAND && SH_SOLUTION_ENGINE
92 select REED_SOLOMON_DEC8
95 This enables the driver for the Renesas Technology AG-AND
96 flash interface board (FROM_BOARD4)
98 config MTD_NAND_PPCHAMELEONEVB
99 tristate "NAND Flash device on PPChameleonEVB board"
100 depends on PPCHAMELEONEVB && MTD_NAND && BROKEN
102 This enables the NAND flash driver on the PPChameleon EVB Board.
104 config MTD_NAND_S3C2410
105 tristate "NAND Flash support for S3C2410/S3C2440 SoC"
106 depends on ARCH_S3C2410 && MTD_NAND
108 This enables the NAND flash controller on the S3C2410 and S3C2440
111 No board specific support is done by this driver, each board
112 must advertise a platform_device for the driver to attach.
114 config MTD_NAND_S3C2410_DEBUG
115 bool "S3C2410 NAND driver debug"
116 depends on MTD_NAND_S3C2410
118 Enable debugging of the S3C2410 NAND driver
120 config MTD_NAND_S3C2410_HWECC
121 bool "S3C2410 NAND Hardware ECC"
122 depends on MTD_NAND_S3C2410
124 Enable the use of the S3C2410's internal ECC generator when
125 using NAND. Early versions of the chip have had problems with
126 incorrect ECC generation, and if using these, the default of
127 software ECC is preferable.
129 If you lay down a device with the hardware ECC, then you will
130 currently not be able to switch to software, as there is no
131 implementation for ECC method used by the S3C2410
134 tristate "NDFC NanD Flash Controller"
135 depends on MTD_NAND && 44x
137 NDFC Nand Flash Controllers are integrated in EP44x SoCs
139 config MTD_NAND_S3C2410_CLKSTOP
140 bool "S3C2410 NAND IDLE clock stop"
141 depends on MTD_NAND_S3C2410
144 Stop the clock to the NAND controller when there is no chip
145 selected to save power. This will mean there is a small delay
146 when the is NAND chip selected or released, but will save
147 approximately 5mA of power when there is nothing happening.
149 config MTD_NAND_DISKONCHIP
150 tristate "DiskOnChip 2000, Millennium and Millennium Plus (NAND reimplementation) (EXPERIMENTAL)"
151 depends on MTD_NAND && EXPERIMENTAL
153 select REED_SOLOMON_DEC16
155 This is a reimplementation of M-Systems DiskOnChip 2000,
156 Millennium and Millennium Plus as a standard NAND device driver,
157 as opposed to the earlier self-contained MTD device drivers.
158 This should enable, among other things, proper JFFS2 operation on
161 config MTD_NAND_DISKONCHIP_PROBE_ADVANCED
162 bool "Advanced detection options for DiskOnChip"
163 depends on MTD_NAND_DISKONCHIP
165 This option allows you to specify nonstandard address at which to
166 probe for a DiskOnChip, or to change the detection options. You
167 are unlikely to need any of this unless you are using LinuxBIOS.
170 config MTD_NAND_DISKONCHIP_PROBE_ADDRESS
171 hex "Physical address of DiskOnChip" if MTD_NAND_DISKONCHIP_PROBE_ADVANCED
172 depends on MTD_NAND_DISKONCHIP
175 By default, the probe for DiskOnChip devices will look for a
176 DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
177 This option allows you to specify a single address at which to probe
178 for the device, which is useful if you have other devices in that
179 range which get upset when they are probed.
181 (Note that on PowerPC, the normal probe will only check at
184 Normally, you should leave this set to zero, to allow the probe at
185 the normal addresses.
187 config MTD_NAND_DISKONCHIP_PROBE_HIGH
188 bool "Probe high addresses"
189 depends on MTD_NAND_DISKONCHIP_PROBE_ADVANCED
191 By default, the probe for DiskOnChip devices will look for a
192 DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
193 This option changes to make it probe between 0xFFFC8000 and
194 0xFFFEE000. Unless you are using LinuxBIOS, this is unlikely to be
195 useful to you. Say 'N'.
197 config MTD_NAND_DISKONCHIP_BBTWRITE
198 bool "Allow BBT writes on DiskOnChip Millennium and 2000TSOP"
199 depends on MTD_NAND_DISKONCHIP
201 On DiskOnChip devices shipped with the INFTL filesystem (Millennium
202 and 2000 TSOP/Alon), Linux reserves some space at the end of the
203 device for the Bad Block Table (BBT). If you have existing INFTL
204 data on your device (created by non-Linux tools such as M-Systems'
205 DOS drivers), your data might overlap the area Linux wants to use for
206 the BBT. If this is a concern for you, leave this option disabled and
207 Linux will not write BBT data into this area.
208 The downside of leaving this option disabled is that if bad blocks
209 are detected by Linux, they will not be recorded in the BBT, which
210 could cause future problems.
211 Once you enable this option, new filesystems (INFTL or others, created
212 in Linux or other operating systems) will not use the reserved area.
213 The only reason not to enable this option is to prevent damage to
214 preexisting filesystems.
215 Even if you leave this disabled, you can enable BBT writes at module
216 load time (assuming you build diskonchip as a module) with the module
217 parameter "inftl_bbt_write=1".
219 config MTD_NAND_SHARPSL
220 tristate "Support for NAND Flash on Sharp SL Series (C7xx + others)"
221 depends on MTD_NAND && ARCH_PXA
224 tristate "NAND support for OLPC CAFÉ chip"
227 Use NAND flash attached to the CAFÉ chip designed for the $100
230 config MTD_NAND_CS553X
231 tristate "NAND support for CS5535/CS5536 (AMD Geode companion chip)"
232 depends on MTD_NAND && X86_32 && (X86_PC || X86_GENERICARCH)
234 The CS553x companion chips for the AMD Geode processor
235 include NAND flash controllers with built-in hardware ECC
236 capabilities; enabling this option will allow you to use
237 these. The driver will check the MSRs to verify that the
238 controller is enabled for NAND, and currently requires that
239 the controller be in MMIO mode.
241 If you say "m", the module will be called "cs553x_nand.ko".
244 bool "Support for NAND Flash / SmartMedia on AT91"
245 depends on MTD_NAND && ARCH_AT91
247 Enables support for NAND Flash / Smart Media Card interface
248 on Atmel AT91 processors.
250 config MTD_NAND_NANDSIM
251 tristate "Support for NAND Flash Simulator"
252 depends on MTD_NAND && MTD_PARTITIONS
254 The simulator may simulate various NAND flash chips for the