5 This enables support for accessing all type of NAND flash
6 devices. For further information see
7 <http://www.linux-mtd.infradead.org/doc/nand.html>.
13 prompt "i.MX NAND driver"
14 depends on ARCH_IMX21 || ARCH_IMX27 || ARCH_IMX31 || ARCH_IMX35 || ARCH_IMX25
18 prompt "Support Starting barebox from NAND"
19 depends on NAND_IMX || NAND_IMX_V2
22 tristate "NAND Flash Support for GPMC based OMAP platforms"
23 depends on ((ARCH_OMAP2 || ARCH_OMAP3) && GPMC)
25 Support for NAND flash using GPMC. GPMC is a common memory
26 interface found on Texas Instrument's OMAP platforms
28 config NAND_OMAP_GPMC_HWECC
29 bool "The Hardware ECC support"
30 depends on NAND && NAND_OMAP_GPMC
33 The ECC compuatation for the data to be written/read can be either by
34 software or omap has Hw ecc engine which calculates it.
38 prompt "Atmel (AT91SAM9xxx) NAND driver"
43 prompt "Samsung S3C24X0 NAND driver"
44 depends on ARCH_S3C24xx
46 Add support for processor's NAND device controller.
48 config MTD_NAND_VERIFY_WRITE
49 bool "Verify NAND page writes"
51 This adds an extra check when data is written to the flash. The
52 NAND flash device internally checks only bits transitioning
53 from 1 to 0. There is a rare possibility that even though the
54 device thinks the write was successful, a bit could have been
55 flipped accidentally due to device wear or something else.
57 config MTD_NAND_ECC_SMC
58 bool "NAND ECC Smart Media byte order"
61 Software ECC according to the Smart Media Specification.
62 The original Linux implementation had byte 0 and 1 swapped.
64 config MTD_NAND_MUSEUM_IDS
65 bool "Enable chip ids for obsolete ancient NAND devices"
69 Enable this option only when your board has first generation
70 NAND chips (page size 256 byte, erase size 4-8KiB). The IDs
71 of these chips were reused by later, larger chips.
76 config MTD_NAND_DISKONCHIP
77 tristate "DiskOnChip 2000, Millennium and Millennium Plus"
78 depends on EXPERIMENTAL && BROKEN
80 This is a reimplementation of M-Systems DiskOnChip 2000,
81 Millennium and Millennium Plus as a standard NAND device driver,
82 as opposed to the earlier self-contained MTD device drivers.
83 This should enable, among other things, proper JFFS2 operation on
86 config MTD_NAND_DISKONCHIP_BBTWRITE
87 bool "Allow BBT writes on DiskOnChip Millennium and 2000TSOP"
88 depends on MTD_NAND_DISKONCHIP
90 On DiskOnChip devices shipped with the INFTL filesystem (Millennium
91 and 2000 TSOP/Alon), Linux reserves some space at the end of the
92 device for the Bad Block Table (BBT). If you have existing INFTL
93 data on your device (created by non-Linux tools such as M-Systems'
94 DOS drivers), your data might overlap the area Linux wants to use for
95 the BBT. If this is a concern for you, leave this option disabled and
96 Linux will not write BBT data into this area.
97 The downside of leaving this option disabled is that if bad blocks
98 are detected by Linux, they will not be recorded in the BBT, which
99 could cause future problems.
100 Once you enable this option, new filesystems (INFTL or others, created
101 in Linux or other operating systems) will not use the reserved area.
102 The only reason not to enable this option is to prevent damage to
103 preexisting filesystems.
104 Even if you leave this disabled, you can enable BBT writes at module
105 load time (assuming you build diskonchip as a module) with the module
106 parameter "inftl_bbt_write=1".