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
39 bool "Lets Yaffs do its own ECC"
40 depends on YAFFS_FS && YAFFS_YAFFS1
43 This enables Yaffs to use its own ECC functions instead of using
44 the ones from the generic MTD-NAND driver.
48 config YAFFS_ECC_WRONG_ORDER
49 bool "Use the same ecc byte order as Steven Hill's nand_ecc.c"
50 depends on YAFFS_FS && YAFFS_DOES_ECC
53 This makes yaffs_ecc.c use the same ecc byte order as
54 Steven Hill's nand_ecc.c. If not set, then you get the
55 same ecc byte order as SmartMedia.
59 config YAFFS_DISABLE_CHUNK_ERASED_CHECK
60 bool "Turn off debug chunk erase check"
64 Enabling this turns off the test that chunks are erased in flash
65 before writing to them. This is safe, since the write verification
66 will fail. Suggest enabling the test (ie. say N)
67 during development to help debug things.
71 config YAFFS_SHORT_NAMES_IN_RAM
72 bool "Cache short names in RAM"
76 If this config is set, then short names are stored with the
77 yaffs_Object. This costs an extra 16 bytes of RAM per object,
78 but makes look-ups faster.