--- /dev/null
+config JFFS2_FS
+ tristate "Journalling Flash File System v2 (JFFS2) support"
+ select CRC32
+ depends on MTD
+ help
+ JFFS2 is the second generation of the Journalling Flash File System
+ for use on diskless embedded devices. It provides improved wear
+ levelling, compression and support for hard links. You cannot use
+ this on normal block devices, only on 'MTD' devices.
+
+ Further information on the design and implementation of JFFS2 is
+ available at <http://sources.redhat.com/jffs2/>.
+
+config JFFS2_FS_DEBUG
+ int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
+ depends on JFFS2_FS
+ default "0"
+ help
+ This controls the amount of debugging messages produced by the JFFS2
+ code. Set it to zero for use in production systems. For evaluation,
+ testing and debugging, it's advisable to set it to one. This will
+ enable a few assertions and will print debugging messages at the
+ KERN_DEBUG loglevel, where they won't normally be visible. Level 2
+ is unlikely to be useful - it enables extra debugging in certain
+ areas which at one point needed debugging, but when the bugs were
+ located and fixed, the detailed messages were relegated to level 2.
+
+ If reporting bugs, please try to have available a full dump of the
+ messages at debug level 1 while the misbehaviour was occurring.
+
+config JFFS2_FS_WRITEBUFFER
+ bool "JFFS2 write-buffering support"
+ depends on JFFS2_FS
+ default y
+ help
+ This enables the write-buffering support in JFFS2.
+
+ This functionality is required to support JFFS2 on the following
+ types of flash devices:
+ - NAND flash
+ - NOR flash with transparent ECC
+ - DataFlash
+
+config JFFS2_FS_WBUF_VERIFY
+ bool "Verify JFFS2 write-buffer reads"
+ depends on JFFS2_FS_WRITEBUFFER
+ default n
+ help
+ This causes JFFS2 to read back every page written through the
+ write-buffer, and check for errors.
+
+config JFFS2_SUMMARY
+ bool "JFFS2 summary support (EXPERIMENTAL)"
+ depends on JFFS2_FS && EXPERIMENTAL
+ default n
+ help
+ This feature makes it possible to use summary information
+ for faster filesystem mount.
+
+ The summary information can be inserted into a filesystem image
+ by the utility 'sumtool'.
+
+ If unsure, say 'N'.
+
+config JFFS2_FS_XATTR
+ bool "JFFS2 XATTR support (EXPERIMENTAL)"
+ depends on JFFS2_FS && EXPERIMENTAL
+ default n
+ help
+ Extended attributes are name:value pairs associated with inodes by
+ the kernel or by users (see the attr(5) manual page, or visit
+ <http://acl.bestbits.at/> for details).
+
+ If unsure, say N.
+
+config JFFS2_FS_POSIX_ACL
+ bool "JFFS2 POSIX Access Control Lists"
+ depends on JFFS2_FS_XATTR
+ default y
+ select FS_POSIX_ACL
+ help
+ Posix Access Control Lists (ACLs) support permissions for users and
+ groups beyond the owner/group/world scheme.
+
+ To learn more about Access Control Lists, visit the Posix ACLs for
+ Linux website <http://acl.bestbits.at/>.
+
+ If you don't know what Access Control Lists are, say N
+
+config JFFS2_FS_SECURITY
+ bool "JFFS2 Security Labels"
+ depends on JFFS2_FS_XATTR
+ default y
+ help
+ Security labels support alternative access control models
+ implemented by security modules like SELinux. This option
+ enables an extended attribute handler for file security
+ labels in the jffs2 filesystem.
+
+ If you are not using a security module that requires using
+ extended attributes for file security labels, say N.
+
+config JFFS2_COMPRESSION_OPTIONS
+ bool "Advanced compression options for JFFS2"
+ depends on JFFS2_FS
+ default n
+ help
+ Enabling this option allows you to explicitly choose which
+ compression modules, if any, are enabled in JFFS2. Removing
+ compressors can mean you cannot read existing file systems,
+ and enabling experimental compressors can mean that you
+ write a file system which cannot be read by a standard kernel.
+
+ If unsure, you should _definitely_ say 'N'.
+
+config JFFS2_ZLIB
+ bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
+ select ZLIB_INFLATE
+ select ZLIB_DEFLATE
+ depends on JFFS2_FS
+ default y
+ help
+ Zlib is designed to be a free, general-purpose, legally unencumbered,
+ lossless data-compression library for use on virtually any computer
+ hardware and operating system. See <http://www.gzip.org/zlib/> for
+ further information.
+
+ Say 'Y' if unsure.
+
+config JFFS2_LZO
+ bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS
+ select LZO_COMPRESS
+ select LZO_DECOMPRESS
+ depends on JFFS2_FS
+ default n
+ help
+ minilzo-based compression. Generally works better than Zlib.
+
+ This feature was added in July, 2007. Say 'N' if you need
+ compatibility with older bootloaders or kernels.
+
+config JFFS2_RTIME
+ bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
+ depends on JFFS2_FS
+ default y
+ help
+ Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
+
+config JFFS2_RUBIN
+ bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
+ depends on JFFS2_FS
+ default n
+ help
+ RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
+
+choice
+ prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
+ default JFFS2_CMODE_PRIORITY
+ depends on JFFS2_FS
+ help
+ You can set here the default compression mode of JFFS2 from
+ the available compression modes. Don't touch if unsure.
+
+config JFFS2_CMODE_NONE
+ bool "no compression"
+ help
+ Uses no compression.
+
+config JFFS2_CMODE_PRIORITY
+ bool "priority"
+ help
+ Tries the compressors in a predefined order and chooses the first
+ successful one.
+
+config JFFS2_CMODE_SIZE
+ bool "size (EXPERIMENTAL)"
+ help
+ Tries all compressors and chooses the one which has the smallest
+ result.
+
+config JFFS2_CMODE_FAVOURLZO
+ bool "Favour LZO"
+ help
+ Tries all compressors and chooses the one which has the smallest
+ result but gives some preference to LZO (which has faster
+ decompression) at the expense of size.
+
+endchoice
projects / karo-tx-linux.git / blobdiff