A little bit of file system configuration logic

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4586 42af7a65-404d-4744-a932-0658087f49c3

fs/nxffs/Kconfig

@@ -2,3 +2,55 @@
 # For a description of the syntax of this configuration file,
 # see misc/tools/kconfig-language.txt.
 #
+
+menu "NXFFS file system configuration"
+comment "NXFFS file system configuration"
+
+config FS_NXFFS
+	bool "NXFFS file system"
+	default n
+	---help---
+		Enable NuttX FLASH file system (NXFF) support.
+
+config NXFFS_ERASEDSTATE
+	bool "FLASH erased state"
+	default n
+	depends on FS_NXFFS
+	---help---	
+		The erased state of FLASH. 
+		This must have one of the values of 0xff or 0x00.
+		Default: 0xff.
+
+config NXFFS_PACKTHRESHOLD
+	bool "Re-packing threshold"
+	default n
+	depends on FS_NXFFS
+	---help---
+		When packing flash file data,
+		don't both with file chunks smaller than this number of data bytes.
+		Default: 32.
+
+config NXFFS_MAXNAMLEN
+	bool "Maximum file name length"
+	default n
+	depends on FS_NXFFS
+	---help---	
+		The maximum size of an NXFFS file name.
+		Default: 255.
+
+config NXFFS_TAILTHRESHOLD
+	bool "Tail threshold"
+	default n
+	depends on FS_NXFFS
+	---help---	
+		clean-up can either mean
+		packing files together toward the end of the file or, if file are
+		deleted at the end of the file, clean up can simply mean erasing
+		the end of FLASH memory so that it can be re-used again.  However,
+		doing this can also harm the life of the FLASH part because it can
+		mean that the tail end of the FLASH is re-used too often. This
+		threshold determines if/when it is worth erased the tail end of FLASH
+		and making it available for re-use (and possible over-wear).
+		Default: 8192.
+
+endmenu