1# drivers/mtd/nand/Kconfig 2 3menuconfig MTD_NAND 4 tristate "NAND Device Support" 5 depends on MTD 6 select MTD_NAND_IDS 7 help 8 This enables support for accessing all type of NAND flash 9 devices. For further information see 10 <http://www.linux-mtd.infradead.org/doc/nand.html>. 11 12if MTD_NAND 13 14config MTD_NAND_VERIFY_WRITE 15 bool "Verify NAND page writes" 16 help 17 This adds an extra check when data is written to the flash. The 18 NAND flash device internally checks only bits transitioning 19 from 1 to 0. There is a rare possibility that even though the 20 device thinks the write was successful, a bit could have been 21 flipped accidentally due to device wear or something else. 22 23config MTD_NAND_ECC_SMC 24 bool "NAND ECC Smart Media byte order" 25 default n 26 help 27 Software ECC according to the Smart Media Specification. 28 The original Linux implementation had byte 0 and 1 swapped. 29 30config MTD_NAND_MUSEUM_IDS 31 bool "Enable chip ids for obsolete ancient NAND devices" 32 depends on MTD_NAND 33 default n 34 help 35 Enable this option only when your board has first generation 36 NAND chips (page size 256 byte, erase size 4-8KiB). The IDs 37 of these chips were reused by later, larger chips. 38 39config MTD_NAND_AUTCPU12 40 tristate "SmartMediaCard on autronix autcpu12 board" 41 depends on ARCH_AUTCPU12 42 help 43 This enables the driver for the autronix autcpu12 board to 44 access the SmartMediaCard. 45 46config MTD_NAND_EDB7312 47 tristate "Support for Cirrus Logic EBD7312 evaluation board" 48 depends on ARCH_EDB7312 49 help 50 This enables the driver for the Cirrus Logic EBD7312 evaluation 51 board to access the onboard NAND Flash. 52 53config MTD_NAND_H1900 54 tristate "iPAQ H1900 flash" 55 depends on ARCH_PXA && MTD_PARTITIONS 56 help 57 This enables the driver for the iPAQ h1900 flash. 58 59config MTD_NAND_GPIO 60 tristate "GPIO NAND Flash driver" 61 depends on GENERIC_GPIO && ARM 62 help 63 This enables a GPIO based NAND flash driver. 64 65config MTD_NAND_SPIA 66 tristate "NAND Flash device on SPIA board" 67 depends on ARCH_P720T 68 help 69 If you had to ask, you don't have one. Say 'N'. 70 71config MTD_NAND_AMS_DELTA 72 tristate "NAND Flash device on Amstrad E3" 73 depends on MACH_AMS_DELTA 74 help 75 Support for NAND flash on Amstrad E3 (Delta). 76 77config MTD_NAND_TS7250 78 tristate "NAND Flash device on TS-7250 board" 79 depends on MACH_TS72XX 80 help 81 Support for NAND flash on Technologic Systems TS-7250 platform. 82 83config MTD_NAND_IDS 84 tristate 85 86config MTD_NAND_AU1550 87 tristate "Au1550/1200 NAND support" 88 depends on SOC_AU1200 || SOC_AU1550 89 help 90 This enables the driver for the NAND flash controller on the 91 AMD/Alchemy 1550 SOC. 92 93config MTD_NAND_BF5XX 94 tristate "Blackfin on-chip NAND Flash Controller driver" 95 depends on (BF54x || BF52x) && MTD_NAND 96 help 97 This enables the Blackfin on-chip NAND flash controller 98 99 No board specific support is done by this driver, each board 100 must advertise a platform_device for the driver to attach. 101 102 This driver can also be built as a module. If so, the module 103 will be called bf5xx-nand. 104 105config MTD_NAND_BF5XX_HWECC 106 bool "BF5XX NAND Hardware ECC" 107 default y 108 depends on MTD_NAND_BF5XX 109 help 110 Enable the use of the BF5XX's internal ECC generator when 111 using NAND. 112 113config MTD_NAND_BF5XX_BOOTROM_ECC 114 bool "Use Blackfin BootROM ECC Layout" 115 default n 116 depends on MTD_NAND_BF5XX_HWECC 117 help 118 If you wish to modify NAND pages and allow the Blackfin on-chip 119 BootROM to boot from them, say Y here. This is only necessary 120 if you are booting U-Boot out of NAND and you wish to update 121 U-Boot from Linux' userspace. Otherwise, you should say N here. 122 123 If unsure, say N. 124 125config MTD_NAND_RTC_FROM4 126 tristate "Renesas Flash ROM 4-slot interface board (FROM_BOARD4)" 127 depends on SH_SOLUTION_ENGINE 128 select REED_SOLOMON 129 select REED_SOLOMON_DEC8 130 select BITREVERSE 131 help 132 This enables the driver for the Renesas Technology AG-AND 133 flash interface board (FROM_BOARD4) 134 135config MTD_NAND_PPCHAMELEONEVB 136 tristate "NAND Flash device on PPChameleonEVB board" 137 depends on PPCHAMELEONEVB && BROKEN 138 help 139 This enables the NAND flash driver on the PPChameleon EVB Board. 140 141config MTD_NAND_S3C2410 142 tristate "NAND Flash support for S3C2410/S3C2440 SoC" 143 depends on ARCH_S3C2410 144 help 145 This enables the NAND flash controller on the S3C2410 and S3C2440 146 SoCs 147 148 No board specific support is done by this driver, each board 149 must advertise a platform_device for the driver to attach. 150 151config MTD_NAND_S3C2410_DEBUG 152 bool "S3C2410 NAND driver debug" 153 depends on MTD_NAND_S3C2410 154 help 155 Enable debugging of the S3C2410 NAND driver 156 157config MTD_NAND_S3C2410_HWECC 158 bool "S3C2410 NAND Hardware ECC" 159 depends on MTD_NAND_S3C2410 160 help 161 Enable the use of the S3C2410's internal ECC generator when 162 using NAND. Early versions of the chip have had problems with 163 incorrect ECC generation, and if using these, the default of 164 software ECC is preferable. 165 166config MTD_NAND_S3C2410_CLKSTOP 167 bool "S3C2410 NAND IDLE clock stop" 168 depends on MTD_NAND_S3C2410 169 default n 170 help 171 Stop the clock to the NAND controller when there is no chip 172 selected to save power. This will mean there is a small delay 173 when the is NAND chip selected or released, but will save 174 approximately 5mA of power when there is nothing happening. 175 176config MTD_NAND_DISKONCHIP 177 tristate "DiskOnChip 2000, Millennium and Millennium Plus (NAND reimplementation) (EXPERIMENTAL)" 178 depends on EXPERIMENTAL 179 select REED_SOLOMON 180 select REED_SOLOMON_DEC16 181 help 182 This is a reimplementation of M-Systems DiskOnChip 2000, 183 Millennium and Millennium Plus as a standard NAND device driver, 184 as opposed to the earlier self-contained MTD device drivers. 185 This should enable, among other things, proper JFFS2 operation on 186 these devices. 187 188config MTD_NAND_DISKONCHIP_PROBE_ADVANCED 189 bool "Advanced detection options for DiskOnChip" 190 depends on MTD_NAND_DISKONCHIP 191 help 192 This option allows you to specify nonstandard address at which to 193 probe for a DiskOnChip, or to change the detection options. You 194 are unlikely to need any of this unless you are using LinuxBIOS. 195 Say 'N'. 196 197config MTD_NAND_DISKONCHIP_PROBE_ADDRESS 198 hex "Physical address of DiskOnChip" if MTD_NAND_DISKONCHIP_PROBE_ADVANCED 199 depends on MTD_NAND_DISKONCHIP 200 default "0" 201 ---help--- 202 By default, the probe for DiskOnChip devices will look for a 203 DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000. 204 This option allows you to specify a single address at which to probe 205 for the device, which is useful if you have other devices in that 206 range which get upset when they are probed. 207 208 (Note that on PowerPC, the normal probe will only check at 209 0xE4000000.) 210 211 Normally, you should leave this set to zero, to allow the probe at 212 the normal addresses. 213 214config MTD_NAND_DISKONCHIP_PROBE_HIGH 215 bool "Probe high addresses" 216 depends on MTD_NAND_DISKONCHIP_PROBE_ADVANCED 217 help 218 By default, the probe for DiskOnChip devices will look for a 219 DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000. 220 This option changes to make it probe between 0xFFFC8000 and 221 0xFFFEE000. Unless you are using LinuxBIOS, this is unlikely to be 222 useful to you. Say 'N'. 223 224config MTD_NAND_DISKONCHIP_BBTWRITE 225 bool "Allow BBT writes on DiskOnChip Millennium and 2000TSOP" 226 depends on MTD_NAND_DISKONCHIP 227 help 228 On DiskOnChip devices shipped with the INFTL filesystem (Millennium 229 and 2000 TSOP/Alon), Linux reserves some space at the end of the 230 device for the Bad Block Table (BBT). If you have existing INFTL 231 data on your device (created by non-Linux tools such as M-Systems' 232 DOS drivers), your data might overlap the area Linux wants to use for 233 the BBT. If this is a concern for you, leave this option disabled and 234 Linux will not write BBT data into this area. 235 The downside of leaving this option disabled is that if bad blocks 236 are detected by Linux, they will not be recorded in the BBT, which 237 could cause future problems. 238 Once you enable this option, new filesystems (INFTL or others, created 239 in Linux or other operating systems) will not use the reserved area. 240 The only reason not to enable this option is to prevent damage to 241 preexisting filesystems. 242 Even if you leave this disabled, you can enable BBT writes at module 243 load time (assuming you build diskonchip as a module) with the module 244 parameter "inftl_bbt_write=1". 245 246config MTD_NAND_SHARPSL 247 tristate "Support for NAND Flash on Sharp SL Series (C7xx + others)" 248 depends on ARCH_PXA 249 250config MTD_NAND_BASLER_EXCITE 251 tristate "Support for NAND Flash on Basler eXcite" 252 depends on BASLER_EXCITE 253 help 254 This enables the driver for the NAND flash device found on the 255 Basler eXcite Smart Camera. If built as a module, the driver 256 will be named "excite_nandflash.ko". 257 258config MTD_NAND_CAFE 259 tristate "NAND support for OLPC CAFÉ chip" 260 depends on PCI 261 select REED_SOLOMON 262 select REED_SOLOMON_DEC16 263 help 264 Use NAND flash attached to the CAFÉ chip designed for the OLPC 265 laptop. 266 267config MTD_NAND_CS553X 268 tristate "NAND support for CS5535/CS5536 (AMD Geode companion chip)" 269 depends on X86_32 && (X86_PC || X86_GENERICARCH) 270 help 271 The CS553x companion chips for the AMD Geode processor 272 include NAND flash controllers with built-in hardware ECC 273 capabilities; enabling this option will allow you to use 274 these. The driver will check the MSRs to verify that the 275 controller is enabled for NAND, and currently requires that 276 the controller be in MMIO mode. 277 278 If you say "m", the module will be called "cs553x_nand.ko". 279 280config MTD_NAND_ATMEL 281 tristate "Support for NAND Flash / SmartMedia on AT91 and AVR32" 282 depends on ARCH_AT91 || AVR32 283 help 284 Enables support for NAND Flash / Smart Media Card interface 285 on Atmel AT91 and AVR32 processors. 286choice 287 prompt "ECC management for NAND Flash / SmartMedia on AT91 / AVR32" 288 depends on MTD_NAND_ATMEL 289 290config MTD_NAND_ATMEL_ECC_HW 291 bool "Hardware ECC" 292 depends on ARCH_AT91SAM9263 || ARCH_AT91SAM9260 || AVR32 293 help 294 Use hardware ECC instead of software ECC when the chip 295 supports it. 296 297 The hardware ECC controller is capable of single bit error 298 correction and 2-bit random detection per page. 299 300 NB : hardware and software ECC schemes are incompatible. 301 If you switch from one to another, you'll have to erase your 302 mtd partition. 303 304 If unsure, say Y 305 306config MTD_NAND_ATMEL_ECC_SOFT 307 bool "Software ECC" 308 help 309 Use software ECC. 310 311 NB : hardware and software ECC schemes are incompatible. 312 If you switch from one to another, you'll have to erase your 313 mtd partition. 314 315config MTD_NAND_ATMEL_ECC_NONE 316 bool "No ECC (testing only, DANGEROUS)" 317 depends on DEBUG_KERNEL 318 help 319 No ECC will be used. 320 It's not a good idea and it should be reserved for testing 321 purpose only. 322 323 If unsure, say N 324 325 endchoice 326 327endchoice 328 329config MTD_NAND_PXA3xx 330 bool "Support for NAND flash devices on PXA3xx" 331 depends on MTD_NAND && PXA3xx 332 help 333 This enables the driver for the NAND flash device found on 334 PXA3xx processors 335 336config MTD_NAND_PXA3xx_BUILTIN 337 bool "Use builtin definitions for some NAND chips (deprecated)" 338 depends on MTD_NAND_PXA3xx 339 help 340 This enables builtin definitions for some NAND chips. This 341 is deprecated in favor of platform specific data. 342 343config MTD_NAND_CM_X270 344 tristate "Support for NAND Flash on CM-X270 modules" 345 depends on MTD_NAND && MACH_ARMCORE 346 347config MTD_NAND_PASEMI 348 tristate "NAND support for PA Semi PWRficient" 349 depends on MTD_NAND && PPC_PASEMI 350 help 351 Enables support for NAND Flash interface on PA Semi PWRficient 352 based boards 353 354config MTD_NAND_TMIO 355 tristate "NAND Flash device on Toshiba Mobile IO Controller" 356 depends on MTD_NAND && MFD_TMIO 357 help 358 Support for NAND flash connected to a Toshiba Mobile IO 359 Controller in some PDAs, including the Sharp SL6000x. 360 361config MTD_NAND_NANDSIM 362 tristate "Support for NAND Flash Simulator" 363 depends on MTD_PARTITIONS 364 help 365 The simulator may simulate various NAND flash chips for the 366 MTD nand layer. 367 368config MTD_NAND_PLATFORM 369 tristate "Support for generic platform NAND driver" 370 depends on MTD_NAND 371 help 372 This implements a generic NAND driver for on-SOC platform 373 devices. You will need to provide platform-specific functions 374 via platform_data. 375 376config MTD_ALAUDA 377 tristate "MTD driver for Olympus MAUSB-10 and Fujifilm DPC-R1" 378 depends on MTD_NAND && USB 379 help 380 These two (and possibly other) Alauda-based cardreaders for 381 SmartMedia and xD allow raw flash access. 382 383config MTD_NAND_ORION 384 tristate "NAND Flash support for Marvell Orion SoC" 385 depends on PLAT_ORION && MTD_NAND 386 help 387 This enables the NAND flash controller on Orion machines. 388 389 No board specific support is done by this driver, each board 390 must advertise a platform_device for the driver to attach. 391 392config MTD_NAND_FSL_ELBC 393 tristate "NAND support for Freescale eLBC controllers" 394 depends on MTD_NAND && PPC_OF 395 help 396 Various Freescale chips, including the 8313, include a NAND Flash 397 Controller Module with built-in hardware ECC capabilities. 398 Enabling this option will enable you to use this to control 399 external NAND devices. 400 401config MTD_NAND_FSL_UPM 402 tristate "Support for NAND on Freescale UPM" 403 depends on MTD_NAND && (PPC_83xx || PPC_85xx) 404 select FSL_LBC 405 help 406 Enables support for NAND Flash chips wired onto Freescale PowerPC 407 processor localbus with User-Programmable Machine support. 408 409config MTD_NAND_MXC 410 tristate "MXC NAND support" 411 depends on ARCH_MX2 412 help 413 This enables the driver for the NAND flash controller on the 414 MXC processors. 415 416config MTD_NAND_SH_FLCTL 417 tristate "Support for NAND on Renesas SuperH FLCTL" 418 depends on MTD_NAND && SUPERH && CPU_SUBTYPE_SH7723 419 help 420 Several Renesas SuperH CPU has FLCTL. This option enables support 421 for NAND Flash using FLCTL. This driver support SH7723. 422 423endif # MTD_NAND 424