3 # YAFFS: Yet another FFS. A NAND-flash specific file system.
5 # Copyright (C) 2002-2006 Aleph One Ltd.
7 # Created by Charles Manning <charles@aleph1.co.uk>
9 # This program is free software; you can redistribute it and/or modify
10 # it under the terms of the GNU General Public License version 2 as
11 # published by the Free Software Foundation.
13 # Patch YAFFS into the kernel
15 # args: kpath : Full path to kernel sources to be patched
17 # Somewhat "inspired by" the mtd patchin script
19 # $Id: patch-ker.sh,v 1.3 2007/07/25 01:04:38 charles Exp $
27 # To be a Linux directory, it must have a Makefile
30 # Display usage of this script
32 echo "usage: $0 c/l kernelpath"
33 echo " if c/l is c, then copy. If l then link"
44 if [ $COPYORLINK = l ]; then
46 elif [ $COPYORLINK = c ]; then
49 echo "unknown copy or link type"
54 # Check if kerneldir contains a Makefile
55 if [ ! -f $LINUXDIR/Makefile ]
57 echo "Directory $LINUXDIR does not exist or is not a kernel source directory";
62 VERSION=`grep -s VERSION <$LINUXDIR/Makefile | head -n 1 | sed s/'VERSION = '//`
63 PATCHLEVEL=`grep -s PATCHLEVEL <$LINUXDIR/Makefile | head -n 1 | sed s/'PATCHLEVEL = '//`
64 SUBLEVEL=`grep -s SUBLEVEL <$LINUXDIR/Makefile | head -n 1 | sed s/'SUBLEVEL = '//`
66 # Can we handle this version?
67 if [ $VERSION -ne 2 -o $PATCHLEVEL -lt 6 ]
69 echo "Cannot patch kernel version $VERSION.$PATCHLEVEL.$SUBLEVEL, must be 2.6.x or higher"
74 KCONFIG=$LINUXDIR/fs/Kconfig
75 KCONFIGOLD=$LINUXDIR/fs/Kconfig.pre.yaffs
76 YAFFS_PATCHED_STRING=`grep -s yaffs <$KCONFIG | head -n 1`
78 MAKEFILE=$LINUXDIR/fs/Makefile
79 MAKEFILEOLD=$LINUXDIR/fs/Makefile.pre.yaffs
81 if [ ! -z "$YAFFS_PATCHED_STRING" ]
84 echo "$KCONFIG already mentions YAFFS, so we will not change it"
86 # Change the fs/Kconfig file
87 # Save the old Kconfig
88 # Copy all stuff up to JFFS
89 # Insert some YAFFS stuff
90 # Copy all the rest of the stuff
93 echo "Updating $KCONFIG"
94 mv -f $KCONFIG $KCONFIGOLD
95 sed -n -e "/JFFS/,99999 ! p" $KCONFIGOLD >$KCONFIG
97 echo "# Patched by YAFFS" >>$KCONFIG
98 echo "source \"fs/yaffs2/Kconfig\"">>$KCONFIG
100 sed -n -e "/JFFS/,99999 p" $KCONFIGOLD >>$KCONFIG
102 # now do fs/Makefile -- simply add the target at the end
103 echo "Updating $MAKEFILE"
104 cp -f $MAKEFILE $MAKEFILEOLD
106 echo "# Patched by YAFFS" >>$MAKEFILE
107 echo "obj-\$(CONFIG_YAFFS_FS) += yaffs2/" >>$MAKEFILE
111 YAFFSDIR=$LINUXDIR/fs/yaffs2
115 echo "$YAFFSDIR exists, not patching"
117 mkdir $LINUXDIR/fs/yaffs2
118 $CPY $PWD/Makefile.kernel $LINUXDIR/fs/yaffs2/Makefile
119 $CPY $PWD/Kconfig $LINUXDIR/fs/yaffs2
120 $CPY $PWD/*.c $PWD/*.h $LINUXDIR/fs/yaffs2