Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) # SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) config JFFS2_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) 	tristate "Journalling Flash File System v2 (JFFS2) support"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) 	select CRC32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) 	depends on MTD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 	  JFFS2 is the second generation of the Journalling Flash File System
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 	  for use on diskless embedded devices. It provides improved wear
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 	  levelling, compression and support for hard links. You cannot use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) 	  this on normal block devices, only on 'MTD' devices.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 	  Further information on the design and implementation of JFFS2 is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 	  available at <http://sources.redhat.com/jffs2/>.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) config JFFS2_FS_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 	int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 	depends on JFFS2_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 	default "0"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	  This controls the amount of debugging messages produced by the JFFS2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	  code. Set it to zero for use in production systems. For evaluation,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 	  testing and debugging, it's advisable to set it to one. This will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	  enable a few assertions and will print debugging messages at the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	  KERN_DEBUG loglevel, where they won't normally be visible. Level 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	  is unlikely to be useful - it enables extra debugging in certain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	  areas which at one point needed debugging, but when the bugs were
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 	  located and fixed, the detailed messages were relegated to level 2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	  If reporting bugs, please try to have available a full dump of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	  messages at debug level 1 while the misbehaviour was occurring.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) config JFFS2_FS_WRITEBUFFER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	bool "JFFS2 write-buffering support"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	depends on JFFS2_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	default y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	  This enables the write-buffering support in JFFS2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	  This functionality is required to support JFFS2 on the following
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	  types of flash devices:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	    - NAND flash
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	    - NOR flash with transparent ECC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	    - DataFlash
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) config JFFS2_FS_WBUF_VERIFY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	bool "Verify JFFS2 write-buffer reads"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	depends on JFFS2_FS_WRITEBUFFER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	default n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	  This causes JFFS2 to read back every page written through the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	  write-buffer, and check for errors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) config JFFS2_SUMMARY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	bool "JFFS2 summary support"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	depends on JFFS2_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	default n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	  This feature makes it possible to use summary information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	  for faster filesystem mount.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	  The summary information can be inserted into a filesystem image
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	  by the utility 'sumtool'.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	  If unsure, say 'N'.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) config JFFS2_FS_XATTR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	bool "JFFS2 XATTR support"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	depends on JFFS2_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	default n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	  Extended attributes are name:value pairs associated with inodes by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	  the kernel or by users (see the attr(5) manual page for details).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	  If unsure, say N.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) config JFFS2_FS_POSIX_ACL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	bool "JFFS2 POSIX Access Control Lists"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	depends on JFFS2_FS_XATTR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	default y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	select FS_POSIX_ACL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	  Posix Access Control Lists (ACLs) support permissions for users and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	  groups beyond the owner/group/world scheme.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	  If you don't know what Access Control Lists are, say N
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) config JFFS2_FS_SECURITY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	bool "JFFS2 Security Labels"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	depends on JFFS2_FS_XATTR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	default y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	  Security labels support alternative access control models
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	  implemented by security modules like SELinux.  This option
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	  enables an extended attribute handler for file security
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	  labels in the jffs2 filesystem.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	  If you are not using a security module that requires using
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	  extended attributes for file security labels, say N.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) config JFFS2_COMPRESSION_OPTIONS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	bool "Advanced compression options for JFFS2"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	depends on JFFS2_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	default n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	  Enabling this option allows you to explicitly choose which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	  compression modules, if any, are enabled in JFFS2. Removing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	  compressors can mean you cannot read existing file systems,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	  and enabling experimental compressors can mean that you
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	  write a file system which cannot be read by a standard kernel.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	  If unsure, you should _definitely_ say 'N'.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) config JFFS2_ZLIB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	select ZLIB_INFLATE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	select ZLIB_DEFLATE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	depends on JFFS2_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	default y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	  Zlib is designed to be a free, general-purpose, legally unencumbered,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	  lossless data-compression library for use on virtually any computer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	  hardware and operating system. See <http://www.gzip.org/zlib/> for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	  further information.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	  Say 'Y' if unsure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) config JFFS2_LZO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	select LZO_COMPRESS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	select LZO_DECOMPRESS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	depends on JFFS2_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	default n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	  minilzo-based compression. Generally works better than Zlib.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	  This feature was added in July, 2007. Say 'N' if you need
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	  compatibility with older bootloaders or kernels.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) config JFFS2_RTIME
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	depends on JFFS2_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	default y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	  Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) config JFFS2_RUBIN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	depends on JFFS2_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	default n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	  RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) choice
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	default JFFS2_CMODE_PRIORITY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	depends on JFFS2_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	  You can set here the default compression mode of JFFS2 from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	  the available compression modes. Don't touch if unsure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) config JFFS2_CMODE_NONE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	bool "no compression"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	  Uses no compression.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) config JFFS2_CMODE_PRIORITY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	bool "priority"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	  Tries the compressors in a predefined order and chooses the first
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	  successful one.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) config JFFS2_CMODE_SIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	bool "size"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	  Tries all compressors and chooses the one which has the smallest
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	  result.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) config JFFS2_CMODE_FAVOURLZO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	bool "Favour LZO"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	  Tries all compressors and chooses the one which has the smallest
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	  result but gives some preference to LZO (which has faster
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	  decompression) at the expense of size.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) endchoice