1 # drivers/mtd/nand/Kconfig
2 # $Id: Kconfig,v 1.14 2004/07/13 00:14:35 dbrown Exp $
4 menu "NAND Flash Device Drivers"
8 tristate "NAND Device Support"
11 This enables support for accessing all type of NAND flash
12 devices. For further information see
13 <http://www.linux-mtd.infradead.org/tech/nand.html>.
15 config MTD_NAND_VERIFY_WRITE
16 bool "Verify NAND page writes"
19 This adds an extra check when data is written to the flash. The
20 NAND flash device internally checks only bits transitioning
21 from 1 to 0. There is a rare possibility that even though the
22 device thinks the write was successful, a bit could have been
23 flipped accidentaly due to device wear or something else.
25 config MTD_NAND_AUTCPU12
26 tristate "SmartMediaCard on autronix autcpu12 board"
27 depends on ARM && MTD_NAND && ARCH_AUTCPU12
29 This enables the driver for the autronix autcpu12 board to
30 access the SmartMediaCard.
32 config MTD_NAND_EDB7312
33 tristate "Support for Cirrus Logic EBD7312 evaluation board"
34 depends on ARM && MTD_NAND && ARCH_EDB7312
36 This enables the driver for the Cirrus Logic EBD7312 evaluation
37 board to access the onboard NAND Flash.
40 tristate "NAND Flash device on SPIA board"
41 depends on ARM && ARCH_P720T && MTD_NAND
43 If you had to ask, you don't have one. Say 'N'.
46 tristate "NAND Flash device on TOTO board"
47 depends on ARM && ARCH_OMAP && MTD_NAND
49 Support for NAND flash on Texas Instruments Toto platform.
53 default y if MTD_NAND = y || MTD_DOC2000 = y || MTD_DOC2001 = y || MTD_DOC2001PLUS = y
54 default m if MTD_NAND = m || MTD_DOC2000 = m || MTD_DOC2001 = m || MTD_DOC2001PLUS = m
56 config MTD_NAND_TX4925NDFMC
57 tristate "SmartMedia Card on Toshiba RBTX4925 reference board"
58 depends on TOSHIBA_RBTX4925 && MTD_NAND && TOSHIBA_RBTX4925_MPLEX_NAND
60 This enables the driver for the NAND flash device found on the
61 Toshiba RBTX4925 reference board, which is a SmartMediaCard.
63 config MTD_NAND_TX4938NDFMC
64 tristate "NAND Flash device on Toshiba RBTX4938 reference board"
65 depends on TOSHIBA_RBTX4938 && MTD_NAND && TOSHIBA_RBTX4938_MPLEX_NAND
67 This enables the driver for the NAND flash device found on the
68 Toshiba RBTX4938 reference board.
70 config MTD_NAND_AU1550
71 tristate "Au1550 NAND support"
72 depends on SOC_AU1550 && MTD_NAND
74 This enables the driver for the NAND flash controller on the
77 config MTD_NAND_PPCHAMELEONEVB
78 tristate "NAND Flash device on PPChameleonEVB board"
79 depends on PPCHAMELEONEVB && MTD_NAND
81 This enables the NAND flash driver on the PPChameleon EVB Board.
83 config MTD_NAND_DISKONCHIP
84 tristate "DiskOnChip 2000 and Millennium (NAND reimplementation) (EXPERIMENTAL)"
85 depends on MTD_NAND && EXPERIMENTAL
87 This is a reimplementation of M-Systems DiskOnChip 2000 and
88 Millennium as a standard NAND device driver, as opposed to the
89 earlier self-contained MTD device drivers.
90 This should enable, among other things, proper JFFS2 operation on
93 config MTD_NAND_DISKONCHIP_BBTWRITE
94 bool "Allow BBT writes on DiskOnChip Millennium and 2000TSOP"
95 depends on MTD_NAND_DISKONCHIP
97 On DiskOnChip devices shipped with the INFTL filesystem (Millennium
98 and 2000 TSOP/Alon), Linux reserves some space at the end of the
99 device for the Bad Block Table (BBT). If you have existing INFTL
100 data on your device (created by non-Linux tools such as M-Systems'
101 DOS drivers), your data might overlap the area Linux wants to use for
102 the BBT. If this is a concern for you, leave this option disabled and
103 Linux will not write BBT data into this area.
104 The downside of leaving this option disabled is that if bad blocks
105 are detected by Linux, they will not be recorded in the BBT, which
106 could cause future problems.
107 Once you enable this option, new filesystems (INFTL or others, created
108 in Linux or other operating systems) will not use the reserved area.
109 The only reason not to enable this option is to prevent damage to
110 preexisting filesystems.
111 Even if you leave this disabled, you can enable BBT writes at module
112 load time (assuming you build diskonchip as a module) with the module
113 parameter "inftl_bbt_write=1".