--- /dev/null
+#
+# YAFFS file system configurations
+#
+config YAFFS_FS
+ tristate "Yet Another Flash Filing System(YAFFS) file system support"
+ help
+ YAFFS, for Yet Another Flash Filing System, is a filing system
+ optimised for NAND Flash chips.
+
+ To compile the YAFFS file system support as a module, choose M here:
+ the module will be called yaffs.
+
+ If unsure, say N.
+
+ Further information on YAFFS is available at
+ <http://www.aleph1.co.uk/yaffs/>.
+
+config YAFFS_MTD_ENABLED
+ bool "NAND mtd support"
+ depends on YAFFS_FS
+ help
+ This adds the yaffs file system support for working with a NAND mtd.
+
+ If unsure, say Y.
+
+config YAFFS_RAM_ENABLED
+ bool "yaffsram file system support"
+ depends on YAFFS_FS
+ help
+ This adds the yaffsram file system support. Nice for testing on x86,
+ but uses 2MB of RAM. Don't enable for NAND-based targets.
+
+ If unsure, say N.
+
+comment "WARNING: mtd and/or yaffsram support should be selected"
+ depends on YAFFS_FS && !YAFFS_MTD_ENABLED && !YAFFS_RAM_ENABLED
+
+config YAFFS_USE_OLD_MTD
+ bool "Old mtd support"
+ depends on YAFFS_FS && 0
+ help
+ Enable this to use the old MTD stuff that did not have yaffs support.
+ You can use this to get around compilation problems, but the best
+ thing to do is to upgrade your MTD support. You will get better speed.
+
+ If unsure, say N.
+
+config YAFFS_USE_NANDECC
+ bool "Use ECC functions of the generic MTD-NAND driver"
+ depends on YAFFS_FS
+ default y
+ help
+ This enables the ECC functions of the generic MTD-NAND driver.
+ This will not work if you are using the old mtd.
+
+ NB Use NAND ECC does not work at present with yaffsram.
+
+ If unsure, say Y.
+
+config YAFFS_ECC_WRONG_ORDER
+ bool "Use the same ecc byte order as Steven Hill's nand_ecc.c"
+ depends on YAFFS_FS
+ help
+ This makes yaffs_ecc.c use the same ecc byte order as
+ Steven Hill's nand_ecc.c. If not set, then you get the
+ same ecc byte order as SmartMedia.
+
+ If unsure, say N.
+
+config YAFFS_USE_GENERIC_RW
+ bool "Use Linux file caching layer"
+ default y
+ depends on YAFFS_FS
+ help
+ Use generic_read/generic_write for reading/writing files. This
+ enables the use of the Linux file caching layer.
+
+ If you disable this, then caching is disabled and file read/write
+ is direct.
+
+ If unsure, say Y.
+
+config YAFFS_USE_HEADER_FILE_SIZE
+ bool "Use object header size"
+ depends on YAFFS_FS
+ help
+ When the flash is scanned, two file sizes are constructed:
+ * The size taken from the object header for the file.
+ * The size figured out by scanning the data chunks.
+ If this option is enabled, then the object header size is used,
+ otherwise the scanned size is used.
+
+ If unsure, say N.
+
+config YAFFS_DISABLE_CHUNK_ERASED_CHECK
+ bool "Turn off debug chunk erase check"
+ depends on YAFFS_FS
+ default y
+ help
+ Enabling this turns off the test that chunks are erased in flash
+ before writing to them. This is safe, since the write verification
+ will fail. Suggest enabling the test (ie. say N)
+ during development to help debug things.
+
+ If unsure, say Y.
+
+#config YAFFS_DISABLE_WRITE_VERIFY
+# bool "Disable write verify (DANGEROUS)"
+# depends on YAFFS_FS && EXPERIMENTAL
+# help
+# I am severely reluctant to provide this config. Disabling the
+# verification is not a good thing to do since NAND writes can
+# fail silently. Disabling the write verification will cause your
+# teeth to rot, rats to eat your corn and give you split ends.
+# You have been warned. ie. Don't uncomment the following line.
+#
+# If unsure, say N.
+#
+
+config YAFFS_SHORT_NAMES_IN_RAM
+ bool "Cache short names in RAM"
+ depends on YAFFS_FS
+ default y
+ help
+ If this config is set, then short names are stored with the
+ yaffs_Object. This costs an extra 16 bytes of RAM per object,
+ but makes look-ups faster.
+
+ If unsure, say Y.
+
+
--- /dev/null
+#!/bin/sh
+#
+# YAFFS: Yet another FFS. A NAND-flash specific file system.
+#
+# Copyright (C) 2002 Aleph One Ltd.
+#
+# Created by Charles Manning <charles@aleph1.co.uk>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# Patch YAFFS into the kernel
+#
+# args: kpath : Full path to kernel sources to be patched
+#
+# Somewhat "inspired by" the mtd patchin script
+#
+# $Id: patch-ker.sh,v 1.1 2005-04-06 01:03:46 charles Exp $
+
+VERSION=0
+PATCHLEVEL=0
+SUBLEVEL=0
+LINUXDIR=$1
+
+# To be a Linux directory, it must have a Makefile
+
+
+# Display usage of this script
+usage () {
+ echo "usage: $0 kernelpath"
+ exit 1
+}
+
+
+
+if [ -z $LINUXDIR ]
+then
+ usage;
+fi
+
+# Check if kerneldir contains a Makefile
+if [ ! -f $LINUXDIR/Makefile ]
+then
+ echo "Directory $LINUXDIR does not exist or is not a kernel source directory";
+ exit 1;
+fi
+
+# Get kernel version
+VERSION=`grep -s VERSION <$LINUXDIR/Makefile | head -n 1 | sed s/'VERSION = '//`
+PATCHLEVEL=`grep -s PATCHLEVEL <$LINUXDIR/Makefile | head -n 1 | sed s/'PATCHLEVEL = '//`
+SUBLEVEL=`grep -s SUBLEVEL <$LINUXDIR/Makefile | head -n 1 | sed s/'SUBLEVEL = '//`
+
+# Can we handle this version?
+if [ $VERSION -ne 2 -o $PATCHLEVEL -lt 6 ]
+then
+ echo "Cannot patch kernel version $VERSION.$PATCHLEVEL.$SUBLEVEL, must be 2.6.x or higher"
+ exit 1;
+fi
+
+
+KCONFIG=$LINUXDIR/fs/Kconfig
+KCONFIGOLD=$LINUXDIR/fs/Kconfig.pre.yaffs
+YAFFS_PATCHED_STRING=`grep -s yaffs <$KCONFIG | head -n 1`
+
+
+if [ ! -z "$YAFFS_PATCHED_STRING" ]
+then
+ YAFFS_PATCHED=0
+ echo "$KCONFIG already mentions YAFFS, so we will not change it"
+else
+ # Change the fs/Kconfig file
+ # Save the old Kconfig
+ # Copy all stuff up to JFFS
+ # Insert some YAFFS stuff
+ # Copy all the rest of the stuff
+
+ YAFFS_PATCHED=1
+ echo "Updating $KCONFIG"
+ mv -f $KCONFIG $KCONFIGOLD
+ sed -n -e "/JFFS/,99999 ! p" $KCONFIGOLD >$KCONFIG
+ echo "">>$KCONFIG
+ echo "# Patched by YAFFS" >>$KCONFIG
+ echo "source \"fs/yaffs/Kconfig\"">>$KCONFIG
+ echo "">>$KCONFIG
+ sed -n -e "/JFFS/,99999 p" $KCONFIGOLD >>$KCONFIG
+
+fi
+
+
+YAFFSDIR=$LINUXDIR/fs/yaffs
+
+if [ -e $YAFFSDIR ]
+then
+ echo "$YAFFSDIR exists, not patching"
+else
+ ln -fs `pwd`/fs/yaffs $LINUXDIR/fs/yaffs
+fi
+
projects / yaffs / .git / commitdiff