yaffs-ecoscentric-gpl: Kconfig annotate

annotate Kconfig @ 165:c2f9b707a39e

Add Phils checkpoint configuration

author	charles <charles>
date	Tue, 19 Dec 2006 21:33:41 +0000
parents	34ac1a735230
children	b8f20fdc3a58

rev	line source
50 bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	1 #
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	2 # YAFFS file system configurations
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	3 #
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	4
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	5 config YAFFS_FS
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	6 tristate "YAFFS2 file system support"
53 9568724a7a82 Add missing default value for some Kconfig's entries. luc <luc> parents: 50 diff changeset	7 default n
121 86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	8 depends on MTD
89 b4b0f79124e4 Added some documentation to moduleconfig.h and set it to match the marty <marty> parents: 62 diff changeset	9 select YAFFS_YAFFS1
b4b0f79124e4 Added some documentation to moduleconfig.h and set it to match the marty <marty> parents: 62 diff changeset	10 select YAFFS_YAFFS2
50 bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	11 help
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	12 YAFFS2, or Yet Another Flash Filing System, is a filing system
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	13 optimised for NAND Flash chips.
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	14
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	15 To compile the YAFFS2 file system support as a module, choose M here:
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	16 the module will be called yaffs2.
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	17
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	18 If unsure, say N.
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	19
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	20 Further information on YAFFS2 is available at
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	21 <http://www.aleph1.co.uk/yaffs/>.
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	22
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	23 config YAFFS_YAFFS1
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	24 bool "512 byte / page devices"
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	25 depends on YAFFS_FS
53 9568724a7a82 Add missing default value for some Kconfig's entries. luc <luc> parents: 50 diff changeset	26 default y
50 bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	27 help
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	28 Enable YAFFS1 support -- yaffs for 512 byte / page devices
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	29
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	30 If unsure, say Y.
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	31
61 49f66fca0b09 newconfig: use YAFFS_DOES_ECC instead of USE_NANDECC luc <luc> parents: 53 diff changeset	32 config YAFFS_DOES_ECC
49f66fca0b09 newconfig: use YAFFS_DOES_ECC instead of USE_NANDECC luc <luc> parents: 53 diff changeset	33 bool "Lets Yaffs do its own ECC"
49f66fca0b09 newconfig: use YAFFS_DOES_ECC instead of USE_NANDECC luc <luc> parents: 53 diff changeset	34 depends on YAFFS_FS && YAFFS_YAFFS1
49f66fca0b09 newconfig: use YAFFS_DOES_ECC instead of USE_NANDECC luc <luc> parents: 53 diff changeset	35 default n
50 bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	36 help
61 49f66fca0b09 newconfig: use YAFFS_DOES_ECC instead of USE_NANDECC luc <luc> parents: 53 diff changeset	37 This enables Yaffs to use its own ECC functions instead of using
49f66fca0b09 newconfig: use YAFFS_DOES_ECC instead of USE_NANDECC luc <luc> parents: 53 diff changeset	38 the ones from the generic MTD-NAND driver.
50 bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	39
61 49f66fca0b09 newconfig: use YAFFS_DOES_ECC instead of USE_NANDECC luc <luc> parents: 53 diff changeset	40 If unsure, say N.
50 bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	41
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	42 config YAFFS_ECC_WRONG_ORDER
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	43 bool "Use the same ecc byte order as Steven Hill's nand_ecc.c"
61 49f66fca0b09 newconfig: use YAFFS_DOES_ECC instead of USE_NANDECC luc <luc> parents: 53 diff changeset	44 depends on YAFFS_FS && YAFFS_DOES_ECC
49f66fca0b09 newconfig: use YAFFS_DOES_ECC instead of USE_NANDECC luc <luc> parents: 53 diff changeset	45 default n
50 bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	46 help
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	47 This makes yaffs_ecc.c use the same ecc byte order as
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	48 Steven Hill's nand_ecc.c. If not set, then you get the
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	49 same ecc byte order as SmartMedia.
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	50
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	51 If unsure, say N.
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	52
62 6bbd34cee11c Move around the option in Kconfig so that depending stuff are nicely indented. luc <luc> parents: 61 diff changeset	53 config YAFFS_YAFFS2
6bbd34cee11c Move around the option in Kconfig so that depending stuff are nicely indented. luc <luc> parents: 61 diff changeset	54 bool "2048 byte (or larger) / page devices"
6bbd34cee11c Move around the option in Kconfig so that depending stuff are nicely indented. luc <luc> parents: 61 diff changeset	55 depends on YAFFS_FS
6bbd34cee11c Move around the option in Kconfig so that depending stuff are nicely indented. luc <luc> parents: 61 diff changeset	56 default y
6bbd34cee11c Move around the option in Kconfig so that depending stuff are nicely indented. luc <luc> parents: 61 diff changeset	57 help
6bbd34cee11c Move around the option in Kconfig so that depending stuff are nicely indented. luc <luc> parents: 61 diff changeset	58 Enable YAFFS2 support -- yaffs for >= 2048 byte / page larger devices
6bbd34cee11c Move around the option in Kconfig so that depending stuff are nicely indented. luc <luc> parents: 61 diff changeset	59
6bbd34cee11c Move around the option in Kconfig so that depending stuff are nicely indented. luc <luc> parents: 61 diff changeset	60 If unsure, say Y.
6bbd34cee11c Move around the option in Kconfig so that depending stuff are nicely indented. luc <luc> parents: 61 diff changeset	61
108 4a8113f1c36b Add yaffs2 autoselection charles <charles> parents: 104 diff changeset	62 config YAFFS_AUTO_YAFFS2
4a8113f1c36b Add yaffs2 autoselection charles <charles> parents: 104 diff changeset	63 bool "Autoselect yaffs2 format"
4a8113f1c36b Add yaffs2 autoselection charles <charles> parents: 104 diff changeset	64 depends on YAFFS_YAFFS2
4a8113f1c36b Add yaffs2 autoselection charles <charles> parents: 104 diff changeset	65 default y
4a8113f1c36b Add yaffs2 autoselection charles <charles> parents: 104 diff changeset	66 help
4a8113f1c36b Add yaffs2 autoselection charles <charles> parents: 104 diff changeset	67 Without this, you need to explicitely use yaffs2 as the file
4a8113f1c36b Add yaffs2 autoselection charles <charles> parents: 104 diff changeset	68 system type. With this, you can say "yaffs" and yaffs or yaffs2
4a8113f1c36b Add yaffs2 autoselection charles <charles> parents: 104 diff changeset	69 will be used depending on the device page size.
4a8113f1c36b Add yaffs2 autoselection charles <charles> parents: 104 diff changeset	70
4a8113f1c36b Add yaffs2 autoselection charles <charles> parents: 104 diff changeset	71 If unsure, say Y.
4a8113f1c36b Add yaffs2 autoselection charles <charles> parents: 104 diff changeset	72
121 86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	73 config YAFFS_DISABLE_LAZY_LOAD
86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	74 bool "Disable lazy loading"
86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	75 depends on YAFFS_YAFFS2
86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	76 default n
86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	77 help
86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	78 "Lazy loading" defers loading file details until they are
86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	79 required. This saves mount time, but makes the first look-up
86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	80 a bit longer.
86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	81
86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	82 Lazy loading will only happen if enabled by this option being 'n'
86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	83 and if the appropriate tags are available, else yaffs2 will
86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	84 automatically fall back to immediate loading and do the right
86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	85 thing.
86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	86
86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	87 Lazy laoding will be required by checkpointing.
86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	88
86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	89 Setting this to 'y' will disable lazy loading.
86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	90
86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	91 If unsure, say N.
86ee01f6c141 Add lazy loading and mtd depend charles <charles> parents: 108 diff changeset	92
165 c2f9b707a39e Add Phils checkpoint configuration charles <charles> parents: 142 diff changeset	93 config YAFFS_CHECKPOINT_RESERVED_BLOCKS
c2f9b707a39e Add Phils checkpoint configuration charles <charles> parents: 142 diff changeset	94 int "Reserved blocks for checkpointing"
c2f9b707a39e Add Phils checkpoint configuration charles <charles> parents: 142 diff changeset	95 depends on YAFFS_YAFFS2
c2f9b707a39e Add Phils checkpoint configuration charles <charles> parents: 142 diff changeset	96 default 10
c2f9b707a39e Add Phils checkpoint configuration charles <charles> parents: 142 diff changeset	97 help
c2f9b707a39e Add Phils checkpoint configuration charles <charles> parents: 142 diff changeset	98 Give the number of Blocks to reserve for checkpointing. These Blocks
c2f9b707a39e Add Phils checkpoint configuration charles <charles> parents: 142 diff changeset	99 are reserved per partition, so if you have very small partitions the
c2f9b707a39e Add Phils checkpoint configuration charles <charles> parents: 142 diff changeset	100 default (10) may be a mess for you.
c2f9b707a39e Add Phils checkpoint configuration charles <charles> parents: 142 diff changeset	101 You can set this value to 0, but that does not mean checkpointing is
c2f9b707a39e Add Phils checkpoint configuration charles <charles> parents: 142 diff changeset	102 disabled at all. There only won't be any specially reserved blocks for
c2f9b707a39e Add Phils checkpoint configuration charles <charles> parents: 142 diff changeset	103 checkpointing, so if there is enough free space on the filesystem,
c2f9b707a39e Add Phils checkpoint configuration charles <charles> parents: 142 diff changeset	104 it will be used for checkpointing.
c2f9b707a39e Add Phils checkpoint configuration charles <charles> parents: 142 diff changeset	105
c2f9b707a39e Add Phils checkpoint configuration charles <charles> parents: 142 diff changeset	106 If unsure, leave at default (10), but don't wonder if there are always
c2f9b707a39e Add Phils checkpoint configuration charles <charles> parents: 142 diff changeset	107 2MB used on your large page device partition (10 x 2k pagesize). When
c2f9b707a39e Add Phils checkpoint configuration charles <charles> parents: 142 diff changeset	108 using small partitions or when being very small on space, you probably
c2f9b707a39e Add Phils checkpoint configuration charles <charles> parents: 142 diff changeset	109 want to set this to zero.
c2f9b707a39e Add Phils checkpoint configuration charles <charles> parents: 142 diff changeset	110
104 8d952dff2dff Hook wide tnode support into Linux charles <charles> parents: 89 diff changeset	111 config YAFFS_DISABLE_WIDE_TNODES
8d952dff2dff Hook wide tnode support into Linux charles <charles> parents: 89 diff changeset	112 bool "Turn off wide tnodes"
8d952dff2dff Hook wide tnode support into Linux charles <charles> parents: 89 diff changeset	113 depends on YAFFS_FS
8d952dff2dff Hook wide tnode support into Linux charles <charles> parents: 89 diff changeset	114 default n
8d952dff2dff Hook wide tnode support into Linux charles <charles> parents: 89 diff changeset	115 help
8d952dff2dff Hook wide tnode support into Linux charles <charles> parents: 89 diff changeset	116 Wide tnodes are only used for large NAND arrays (>=32MB for
8d952dff2dff Hook wide tnode support into Linux charles <charles> parents: 89 diff changeset	117 512-byte page devices and >=128MB for 2k page devices). They use
8d952dff2dff Hook wide tnode support into Linux charles <charles> parents: 89 diff changeset	118 slightly more RAM but are faster since they eliminate chunk group
8d952dff2dff Hook wide tnode support into Linux charles <charles> parents: 89 diff changeset	119 searching.
8d952dff2dff Hook wide tnode support into Linux charles <charles> parents: 89 diff changeset	120
8d952dff2dff Hook wide tnode support into Linux charles <charles> parents: 89 diff changeset	121 Setting this to 'y' will force tnode width to 16 bits and make
8d952dff2dff Hook wide tnode support into Linux charles <charles> parents: 89 diff changeset	122 large arrays slower.
8d952dff2dff Hook wide tnode support into Linux charles <charles> parents: 89 diff changeset	123
8d952dff2dff Hook wide tnode support into Linux charles <charles> parents: 89 diff changeset	124 If unsure, say N.
8d952dff2dff Hook wide tnode support into Linux charles <charles> parents: 89 diff changeset	125
142 34ac1a735230 Better retirement and erasure checking. charles <charles> parents: 121 diff changeset	126 config YAFFS_ALWAYS_CHECK_CHUNK_ERASED
34ac1a735230 Better retirement and erasure checking. charles <charles> parents: 121 diff changeset	127 bool "Force chunk erase check"
50 bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	128 depends on YAFFS_FS
142 34ac1a735230 Better retirement and erasure checking. charles <charles> parents: 121 diff changeset	129 default n
50 bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	130 help
142 34ac1a735230 Better retirement and erasure checking. charles <charles> parents: 121 diff changeset	131 Normally YAFFS only checks chunks before writing until an erased
34ac1a735230 Better retirement and erasure checking. charles <charles> parents: 121 diff changeset	132 chunk is found. This helps to detect any partially written chunks
34ac1a735230 Better retirement and erasure checking. charles <charles> parents: 121 diff changeset	133 that might have happened due to power loss.
34ac1a735230 Better retirement and erasure checking. charles <charles> parents: 121 diff changeset	134
34ac1a735230 Better retirement and erasure checking. charles <charles> parents: 121 diff changeset	135 Enabling this forces on the test that chunks are erased in flash
34ac1a735230 Better retirement and erasure checking. charles <charles> parents: 121 diff changeset	136 before writing to them. This takes more time but is potentially a
34ac1a735230 Better retirement and erasure checking. charles <charles> parents: 121 diff changeset	137 bit more secure.
34ac1a735230 Better retirement and erasure checking. charles <charles> parents: 121 diff changeset	138
34ac1a735230 Better retirement and erasure checking. charles <charles> parents: 121 diff changeset	139 Suggest setting Y during development and ironing out driver issues
34ac1a735230 Better retirement and erasure checking. charles <charles> parents: 121 diff changeset	140 etc. Suggest setting to N if you want faster writing.
50 bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	141
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	142 If unsure, say Y.
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	143
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	144 config YAFFS_SHORT_NAMES_IN_RAM
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	145 bool "Cache short names in RAM"
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	146 depends on YAFFS_FS
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	147 default y
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	148 help
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	149 If this config is set, then short names are stored with the
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	150 yaffs_Object. This costs an extra 16 bytes of RAM per object,
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	151 but makes look-ups faster.
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	152
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6 marty <marty> parents: diff changeset	153 If unsure, say Y.

Mercurial > yaffs-ecoscentric-gpl

annotate Kconfig @ 165:c2f9b707a39e