3 # YAFFS: Yet another FFS. A NAND-flash specific file system.
5 # Copyright (C) 2002-2010 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
26 # To be a Linux directory, it must have a Makefile
29 # Display usage of this script
31 echo "usage: $0 c/l kernelpath"
32 echo " if c/l is c, then copy. If l then link"
43 if [ $COPYORLINK = l ]; then
45 elif [ $COPYORLINK = c ]; then
48 echo "unknown copy or link type"
53 # Check if kerneldir contains a Makefile
54 if [ ! -f $LINUXDIR/Makefile ]
56 echo "Directory $LINUXDIR does not exist or is not a kernel source directory";
61 VERSION=`grep -s VERSION <$LINUXDIR/Makefile | head -n 1 | sed s/'VERSION = '//`
62 PATCHLEVEL=`grep -s PATCHLEVEL <$LINUXDIR/Makefile | head -n 1 | sed s/'PATCHLEVEL = '//`
63 SUBLEVEL=`grep -s SUBLEVEL <$LINUXDIR/Makefile | head -n 1 | sed s/'SUBLEVEL = '//`
65 # Can we handle this version?
66 if [ $VERSION -ne 2 -o $PATCHLEVEL -lt 6 ]
68 echo "Cannot patch kernel version $VERSION.$PATCHLEVEL.$SUBLEVEL, must be 2.6.x or higher"
73 KCONFIG=$LINUXDIR/fs/Kconfig
74 KCONFIGOLD=$LINUXDIR/fs/Kconfig.pre.yaffs
75 YAFFS_PATCHED_STRING=`grep -s yaffs <$KCONFIG | head -n 1`
77 MAKEFILE=$LINUXDIR/fs/Makefile
78 MAKEFILEOLD=$LINUXDIR/fs/Makefile.pre.yaffs
80 if [ ! -z "$YAFFS_PATCHED_STRING" ]
83 echo "$KCONFIG already mentions YAFFS, so we will not change it"
85 # Change the fs/Kconfig file
86 # Save the old Kconfig
87 # Copy all stuff up to JFFS
88 # Insert some YAFFS stuff
89 # Copy all the rest of the stuff
92 echo "Updating $KCONFIG"
93 mv -f $KCONFIG $KCONFIGOLD
94 sed -n -e "/[Jj][Ff][Ff][Ss]/,99999 ! p" $KCONFIGOLD >$KCONFIG
96 echo "# Patched by YAFFS" >>$KCONFIG
97 echo "source \"fs/yaffs2/Kconfig\"">>$KCONFIG
99 sed -n -e "/[Jj][Ff][Ff][Ss]/,99999 p" $KCONFIGOLD >>$KCONFIG
101 # now do fs/Makefile -- simply add the target at the end
102 echo "Updating $MAKEFILE"
103 cp -f $MAKEFILE $MAKEFILEOLD
105 echo "# Patched by YAFFS" >>$MAKEFILE
106 echo "obj-\$(CONFIG_YAFFS_FS) += yaffs2/" >>$MAKEFILE
110 YAFFSDIR=$LINUXDIR/fs/yaffs2
114 echo "$YAFFSDIR exists, not patching"
116 mkdir $LINUXDIR/fs/yaffs2
117 $CPY $PWD/Makefile.kernel $LINUXDIR/fs/yaffs2/Makefile
118 $CPY $PWD/Kconfig $LINUXDIR/fs/yaffs2
119 $CPY $PWD/*.c $PWD/*.h $LINUXDIR/fs/yaffs2