yaffs-ecoscentric: Kconfig annotate

annotate Kconfig @ 192:e2070ca1f010

Add files missing from kernel makefile

author	charles
date	Wed, 25 Jul 2007 02:05:10 +0100
parents	31b2ee96d3a0
children	88a05fb266f0

rev	line source
52 9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	1 #
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	2 # YAFFS file system configurations
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	3 #
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	4
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	5 config YAFFS_FS
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	6 tristate "YAFFS2 file system support"
55 f79e2c26f741 Add missing default value for some Kconfig's entries. luc parents: 52 diff changeset	7 default n
125 d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	8 depends on MTD
92 31598d35e840 Added some documentation to moduleconfig.h and set it to match the marty parents: 64 diff changeset	9 select YAFFS_YAFFS1
31598d35e840 Added some documentation to moduleconfig.h and set it to match the marty parents: 64 diff changeset	10 select YAFFS_YAFFS2
52 9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	11 help
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	12 YAFFS2, or Yet Another Flash Filing System, is a filing system
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	13 optimised for NAND Flash chips.
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	14
174 7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	15 To compile the YAFFS2 file system support as a module, choose M
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	16 here: the module will be called yaffs2.
52 9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	17
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	18 If unsure, say N.
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	19
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	20 Further information on YAFFS2 is available at
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	21 <http://www.aleph1.co.uk/yaffs/>.
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	22
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	23 config YAFFS_YAFFS1
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	24 bool "512 byte / page devices"
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	25 depends on YAFFS_FS
55 f79e2c26f741 Add missing default value for some Kconfig's entries. luc parents: 52 diff changeset	26 default y
52 9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	27 help
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	28 Enable YAFFS1 support -- yaffs for 512 byte / page devices
174 7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	29
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	30 Not needed for 2K-page devices.
52 9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	31
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	32 If unsure, say Y.
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	33
185 fa4e74c5013d Rolling in Ians and other changes charles parents: 174 diff changeset	34 config YAFFS_9BYTE_TAGS
fa4e74c5013d Rolling in Ians and other changes charles parents: 174 diff changeset	35 bool "Use older-style on-NAND data format with pageStatus byte"
fa4e74c5013d Rolling in Ians and other changes charles parents: 174 diff changeset	36 depends on YAFFS_YAFFS1
fa4e74c5013d Rolling in Ians and other changes charles parents: 174 diff changeset	37 default n
fa4e74c5013d Rolling in Ians and other changes charles parents: 174 diff changeset	38 help
fa4e74c5013d Rolling in Ians and other changes charles parents: 174 diff changeset	39
fa4e74c5013d Rolling in Ians and other changes charles parents: 174 diff changeset	40 Older-style on-NAND data format has a "pageStatus" byte to record
fa4e74c5013d Rolling in Ians and other changes charles parents: 174 diff changeset	41 chunk/page state. This byte is zero when the page is discarded.
fa4e74c5013d Rolling in Ians and other changes charles parents: 174 diff changeset	42 Choose this option if you have existing on-NAND data using this
fa4e74c5013d Rolling in Ians and other changes charles parents: 174 diff changeset	43 format that you need to continue to support. New data written
fa4e74c5013d Rolling in Ians and other changes charles parents: 174 diff changeset	44 also uses the older-style format. Note: Use of this option
fa4e74c5013d Rolling in Ians and other changes charles parents: 174 diff changeset	45 generally requires that MTD's oob layout be adjusted to use the
190 31b2ee96d3a0 Update comments about use of CONFIG_YAFFS_9BYTE_TAGS option. imcd parents: 185 diff changeset	46 older-style format. See notes on tags formats and MTD versions
31b2ee96d3a0 Update comments about use of CONFIG_YAFFS_9BYTE_TAGS option. imcd parents: 185 diff changeset	47 in yaffs_mtdif1.c.
185 fa4e74c5013d Rolling in Ians and other changes charles parents: 174 diff changeset	48
fa4e74c5013d Rolling in Ians and other changes charles parents: 174 diff changeset	49 If unsure, say N.
fa4e74c5013d Rolling in Ians and other changes charles parents: 174 diff changeset	50
63 d7b5de6ac891 newconfig: use YAFFS_DOES_ECC instead of USE_NANDECC luc parents: 55 diff changeset	51 config YAFFS_DOES_ECC
d7b5de6ac891 newconfig: use YAFFS_DOES_ECC instead of USE_NANDECC luc parents: 55 diff changeset	52 bool "Lets Yaffs do its own ECC"
185 fa4e74c5013d Rolling in Ians and other changes charles parents: 174 diff changeset	53 depends on YAFFS_FS && YAFFS_YAFFS1 && !YAFFS_9BYTE_TAGS
63 d7b5de6ac891 newconfig: use YAFFS_DOES_ECC instead of USE_NANDECC luc parents: 55 diff changeset	54 default n
52 9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	55 help
63 d7b5de6ac891 newconfig: use YAFFS_DOES_ECC instead of USE_NANDECC luc parents: 55 diff changeset	56 This enables Yaffs to use its own ECC functions instead of using
d7b5de6ac891 newconfig: use YAFFS_DOES_ECC instead of USE_NANDECC luc parents: 55 diff changeset	57 the ones from the generic MTD-NAND driver.
52 9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	58
63 d7b5de6ac891 newconfig: use YAFFS_DOES_ECC instead of USE_NANDECC luc parents: 55 diff changeset	59 If unsure, say N.
52 9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	60
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	61 config YAFFS_ECC_WRONG_ORDER
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	62 bool "Use the same ecc byte order as Steven Hill's nand_ecc.c"
185 fa4e74c5013d Rolling in Ians and other changes charles parents: 174 diff changeset	63 depends on YAFFS_FS && YAFFS_DOES_ECC && !YAFFS_9BYTE_TAGS
63 d7b5de6ac891 newconfig: use YAFFS_DOES_ECC instead of USE_NANDECC luc parents: 55 diff changeset	64 default n
52 9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	65 help
174 7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	66 This makes yaffs_ecc.c use the same ecc byte order as Steven
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	67 Hill's nand_ecc.c. If not set, then you get the same ecc byte
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	68 order as SmartMedia.
52 9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	69
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	70 If unsure, say N.
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	71
64 14c997a84f06 Move around the option in Kconfig so that depending stuff are nicely indented. luc parents: 63 diff changeset	72 config YAFFS_YAFFS2
14c997a84f06 Move around the option in Kconfig so that depending stuff are nicely indented. luc parents: 63 diff changeset	73 bool "2048 byte (or larger) / page devices"
14c997a84f06 Move around the option in Kconfig so that depending stuff are nicely indented. luc parents: 63 diff changeset	74 depends on YAFFS_FS
14c997a84f06 Move around the option in Kconfig so that depending stuff are nicely indented. luc parents: 63 diff changeset	75 default y
14c997a84f06 Move around the option in Kconfig so that depending stuff are nicely indented. luc parents: 63 diff changeset	76 help
174 7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	77 Enable YAFFS2 support -- yaffs for >= 2K bytes per page devices
64 14c997a84f06 Move around the option in Kconfig so that depending stuff are nicely indented. luc parents: 63 diff changeset	78
14c997a84f06 Move around the option in Kconfig so that depending stuff are nicely indented. luc parents: 63 diff changeset	79 If unsure, say Y.
14c997a84f06 Move around the option in Kconfig so that depending stuff are nicely indented. luc parents: 63 diff changeset	80
111 43d9629a47ec Add yaffs2 autoselection charles parents: 107 diff changeset	81 config YAFFS_AUTO_YAFFS2
43d9629a47ec Add yaffs2 autoselection charles parents: 107 diff changeset	82 bool "Autoselect yaffs2 format"
43d9629a47ec Add yaffs2 autoselection charles parents: 107 diff changeset	83 depends on YAFFS_YAFFS2
43d9629a47ec Add yaffs2 autoselection charles parents: 107 diff changeset	84 default y
43d9629a47ec Add yaffs2 autoselection charles parents: 107 diff changeset	85 help
43d9629a47ec Add yaffs2 autoselection charles parents: 107 diff changeset	86 Without this, you need to explicitely use yaffs2 as the file
43d9629a47ec Add yaffs2 autoselection charles parents: 107 diff changeset	87 system type. With this, you can say "yaffs" and yaffs or yaffs2
174 7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	88 will be used depending on the device page size (yaffs on
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	89 512-byte page devices, yaffs2 on 2K page devices).
111 43d9629a47ec Add yaffs2 autoselection charles parents: 107 diff changeset	90
43d9629a47ec Add yaffs2 autoselection charles parents: 107 diff changeset	91 If unsure, say Y.
43d9629a47ec Add yaffs2 autoselection charles parents: 107 diff changeset	92
125 d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	93 config YAFFS_DISABLE_LAZY_LOAD
d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	94 bool "Disable lazy loading"
d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	95 depends on YAFFS_YAFFS2
d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	96 default n
d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	97 help
d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	98 "Lazy loading" defers loading file details until they are
d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	99 required. This saves mount time, but makes the first look-up
d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	100 a bit longer.
d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	101
d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	102 Lazy loading will only happen if enabled by this option being 'n'
d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	103 and if the appropriate tags are available, else yaffs2 will
d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	104 automatically fall back to immediate loading and do the right
d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	105 thing.
d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	106
d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	107 Lazy laoding will be required by checkpointing.
d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	108
d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	109 Setting this to 'y' will disable lazy loading.
d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	110
d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	111 If unsure, say N.
d7d697637ee6 Add lazy loading and mtd depend charles parents: 111 diff changeset	112
171 52ba5731a251 Add Phils checkpoint configuration charles parents: 148 diff changeset	113 config YAFFS_CHECKPOINT_RESERVED_BLOCKS
52ba5731a251 Add Phils checkpoint configuration charles parents: 148 diff changeset	114 int "Reserved blocks for checkpointing"
52ba5731a251 Add Phils checkpoint configuration charles parents: 148 diff changeset	115 depends on YAFFS_YAFFS2
52ba5731a251 Add Phils checkpoint configuration charles parents: 148 diff changeset	116 default 10
52ba5731a251 Add Phils checkpoint configuration charles parents: 148 diff changeset	117 help
174 7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	118 Give the number of Blocks to reserve for checkpointing.
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	119 Checkpointing saves the state at unmount so that mounting is
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	120 much faster as a scan of all the flash to regenerate this state
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	121 is not needed. These Blocks are reserved per partition, so if
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	122 you have very small partitions the default (10) may be a mess
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	123 for you. You can set this value to 0, but that does not mean
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	124 checkpointing is disabled at all. There only won't be any
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	125 specially reserved blocks for checkpointing, so if there is
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	126 enough free space on the filesystem, it will be used for
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	127 checkpointing.
171 52ba5731a251 Add Phils checkpoint configuration charles parents: 148 diff changeset	128
174 7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	129 If unsure, leave at default (10), but don't wonder if there are
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	130 always 2MB used on your large page device partition (10 x 2k
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	131 pagesize). When using small partitions or when being very small
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	132 on space, you probably want to set this to zero.
171 52ba5731a251 Add Phils checkpoint configuration charles parents: 148 diff changeset	133
107 f5445121de97 Hook wide tnode support into Linux charles parents: 92 diff changeset	134 config YAFFS_DISABLE_WIDE_TNODES
f5445121de97 Hook wide tnode support into Linux charles parents: 92 diff changeset	135 bool "Turn off wide tnodes"
f5445121de97 Hook wide tnode support into Linux charles parents: 92 diff changeset	136 depends on YAFFS_FS
f5445121de97 Hook wide tnode support into Linux charles parents: 92 diff changeset	137 default n
f5445121de97 Hook wide tnode support into Linux charles parents: 92 diff changeset	138 help
174 7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	139 Wide tnodes are only used for NAND arrays >=32MB for 512-byte
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	140 page devices and >=128MB for 2k page devices. They use slightly
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	141 more RAM but are faster since they eliminate chunk group
107 f5445121de97 Hook wide tnode support into Linux charles parents: 92 diff changeset	142 searching.
f5445121de97 Hook wide tnode support into Linux charles parents: 92 diff changeset	143
174 7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	144 Setting this to 'y' will force tnode width to 16 bits and save
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	145 memory but make large arrays slower.
107 f5445121de97 Hook wide tnode support into Linux charles parents: 92 diff changeset	146
f5445121de97 Hook wide tnode support into Linux charles parents: 92 diff changeset	147 If unsure, say N.
f5445121de97 Hook wide tnode support into Linux charles parents: 92 diff changeset	148
148 1d8892b579f5 Better retirement and erasure checking. charles parents: 125 diff changeset	149 config YAFFS_ALWAYS_CHECK_CHUNK_ERASED
1d8892b579f5 Better retirement and erasure checking. charles parents: 125 diff changeset	150 bool "Force chunk erase check"
52 9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	151 depends on YAFFS_FS
148 1d8892b579f5 Better retirement and erasure checking. charles parents: 125 diff changeset	152 default n
52 9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	153 help
148 1d8892b579f5 Better retirement and erasure checking. charles parents: 125 diff changeset	154 Normally YAFFS only checks chunks before writing until an erased
174 7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	155 chunk is found. This helps to detect any partially written
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	156 chunks that might have happened due to power loss.
148 1d8892b579f5 Better retirement and erasure checking. charles parents: 125 diff changeset	157
1d8892b579f5 Better retirement and erasure checking. charles parents: 125 diff changeset	158 Enabling this forces on the test that chunks are erased in flash
174 7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	159 before writing to them. This takes more time but is potentially
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	160 a bit more secure.
148 1d8892b579f5 Better retirement and erasure checking. charles parents: 125 diff changeset	161
174 7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	162 Suggest setting Y during development and ironing out driver
7d11ae6795e4 normalise licence headers and attributions wookey parents: 171 diff changeset	163 issues etc. Suggest setting to N if you want faster writing.
52 9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	164
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	165 If unsure, say Y.
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	166
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	167 config YAFFS_SHORT_NAMES_IN_RAM
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	168 bool "Cache short names in RAM"
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	169 depends on YAFFS_FS
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	170 default y
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	171 help
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	172 If this config is set, then short names are stored with the
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	173 yaffs_Object. This costs an extra 16 bytes of RAM per object,
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	174 but makes look-ups faster.
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	175
9fff486c54cb Added files that support the ability to "patchin" yaffs2 into the 2.6 marty parents: diff changeset	176 If unsure, say Y.

Mercurial > yaffs-ecoscentric

annotate Kconfig @ 192:e2070ca1f010