2 # YAFFS file system configurations
6 tristate "YAFFS2 file system support"
9 YAFFS2, or Yet Another Flash Filing System, is a filing system
10 optimised for NAND Flash chips.
12 To compile the YAFFS2 file system support as a module, choose M here:
13 the module will be called yaffs2.
17 Further information on YAFFS2 is available at
18 <http://www.aleph1.co.uk/yaffs/>.
21 bool "512 byte / page devices"
25 Enable YAFFS1 support -- yaffs for 512 byte / page devices
30 bool "2048 byte (or larger) / page devices"
34 Enable YAFFS2 support -- yaffs for >= 2048 byte / page larger devices
38 config YAFFS_USE_NANDECC
39 bool "Use ECC functions of the generic MTD-NAND driver"
43 This enables the ECC functions of the generic MTD-NAND driver.
44 This will not work if you are using the old mtd.
46 NB Use NAND ECC does not work at present with yaffsram.
50 config YAFFS_ECC_WRONG_ORDER
51 bool "Use the same ecc byte order as Steven Hill's nand_ecc.c"
52 depends on YAFFS_FS && !YAFFS_USE_NANDECC
54 This makes yaffs_ecc.c use the same ecc byte order as
55 Steven Hill's nand_ecc.c. If not set, then you get the
56 same ecc byte order as SmartMedia.
60 config YAFFS_DISABLE_CHUNK_ERASED_CHECK
61 bool "Turn off debug chunk erase check"
65 Enabling this turns off the test that chunks are erased in flash
66 before writing to them. This is safe, since the write verification
67 will fail. Suggest enabling the test (ie. say N)
68 during development to help debug things.
72 config YAFFS_SHORT_NAMES_IN_RAM
73 bool "Cache short names in RAM"
77 If this config is set, then short names are stored with the
78 yaffs_Object. This costs an extra 16 bytes of RAM per object,
79 but makes look-ups faster.