X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=Kconfig;h=de151639019fa5d9f93df20ea5b67c59529e5954;hp=6bd1a6b7f5f0bf59a5658e40d7bee1317a65539a;hb=49942b13d7cfbdba72c18de0f37d16d81b4372a8;hpb=6f1de4473200f31d1ca1cf4672baf7afcdec2db0

diff --git a/Kconfig b/Kconfig
index 6bd1a6b..de15163 100644
--- a/Kconfig
+++ b/Kconfig
@@ -26,14 +26,31 @@ config YAFFS_YAFFS1
 	default y
 	help
 	  Enable YAFFS1 support -- yaffs for 512 byte / page devices
-	  
+
 	  Not needed for 2K-page devices.
 
 	  If unsure, say Y.
 
+config YAFFS_9BYTE_TAGS
+	bool "Use older-style on-NAND data format with pageStatus byte"
+	depends on YAFFS_YAFFS1
+	default n
+	help
+
+	  Older-style on-NAND data format has a "pageStatus" byte to record
+	  chunk/page state.  This byte is zero when the page is discarded.
+	  Choose this option if you have existing on-NAND data using this
+	  format that you need to continue to support.  New data written
+	  also uses the older-style format.  Note: Use of this option
+	  generally requires that MTD's oob layout be adjusted to use the
+	  older-style format.  See notes on tags formats and MTD versions
+	  in yaffs_mtdif1.c.
+
+	  If unsure, say N.
+
 config YAFFS_DOES_ECC
 	bool "Lets Yaffs do its own ECC"
-	depends on YAFFS_FS && YAFFS_YAFFS1
+	depends on YAFFS_FS && YAFFS_YAFFS1 && !YAFFS_9BYTE_TAGS
 	default n
 	help
 	  This enables Yaffs to use its own ECC functions instead of using
@@ -43,7 +60,7 @@ config YAFFS_DOES_ECC
 
 config YAFFS_ECC_WRONG_ORDER
 	bool "Use the same ecc byte order as Steven Hill's nand_ecc.c"
-	depends on YAFFS_FS && YAFFS_DOES_ECC
+	depends on YAFFS_FS && YAFFS_DOES_ECC && !YAFFS_9BYTE_TAGS
 	default n
 	help
 	  This makes yaffs_ecc.c use the same ecc byte order as Steven
@@ -93,26 +110,6 @@ config YAFFS_DISABLE_LAZY_LOAD
 
 	  If unsure, say N.
 
-config YAFFS_CHECKPOINT_RESERVED_BLOCKS
-	int "Reserved blocks for checkpointing"
-	depends on YAFFS_YAFFS2
-	default 10
-	help
-          Give the number of Blocks to reserve for checkpointing.
-	  Checkpointing saves the state at unmount so that mounting is
-	  much faster as a scan of all the flash to regenerate this state
-	  is not needed.  These Blocks are reserved per partition, so if
-	  you have very small partitions the default (10) may be a mess
-	  for you.  You can set this value to 0, but that does not mean
-	  checkpointing is disabled at all. There only won't be any
-	  specially reserved blocks for checkpointing, so if there is
-	  enough free space on the filesystem, it will be used for
-	  checkpointing.
-
-	  If unsure, leave at default (10), but don't wonder if there are
-	  always 2MB used on your large page device partition (10 x 2k
-	  pagesize). When using small partitions or when being very small
-	  on space, you probably want to set this to zero.
 
 config YAFFS_DISABLE_WIDE_TNODES
 	bool "Turn off wide tnodes"
@@ -141,9 +138,9 @@ config YAFFS_ALWAYS_CHECK_CHUNK_ERASED
 	  Enabling this forces on the test that chunks are erased in flash
 	  before writing to them. This takes more time but is potentially
 	  a bit more secure.
- 
+
 	  Suggest setting Y during development and ironing out driver
-	  issues etc. Suggest setting to N if you want faster writing.  
+	  issues etc. Suggest setting to N if you want faster writing.
 
 	  If unsure, say Y.