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annotate patch-ker.sh @ 50:bcf056049698

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Added files that support the ability to "patchin" yaffs2 into the 2.6 kernel tree so that it can be compiled there. Makefile.kernel and patch-ker.sh will need to be edited when the source tree is reorganized.
author marty <marty>
date Sun, 31 Jul 2005 09:04:13 +0000
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children b8f20fdc3a58
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50
bcf056049698 Added files that support the ability to "patchin" yaffs2 into the 2.6
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1 #!/bin/sh
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2 #
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3 # YAFFS: Yet another FFS. A NAND-flash specific file system.
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4 #
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5 # Copyright (C) 2002 Aleph One Ltd.
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6 #
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7 # Created by Charles Manning <charles@aleph1.co.uk>
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8 #
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9 # This program is free software; you can redistribute it and/or modify
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10 # it under the terms of the GNU General Public License version 2 as
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11 # published by the Free Software Foundation.
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12 #
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13 # Patch YAFFS into the kernel
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14 #
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15 # args: kpath : Full path to kernel sources to be patched
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16 #
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17 # Somewhat "inspired by" the mtd patchin script
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18 #
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19 # $Id: patch-ker.sh,v 1.1 2005-07-31 09:04:13 marty Exp $
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20
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21 VERSION=0
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22 PATCHLEVEL=0
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23 SUBLEVEL=0
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24 LINUXDIR=$1
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25
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26 # To be a Linux directory, it must have a Makefile
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27
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28
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29 # Display usage of this script
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30 usage () {
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31 echo "usage: $0 kernelpath"
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32 exit 1
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33 }
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34
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35
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36
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37 if [ -z $LINUXDIR ]
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38 then
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39 usage;
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40 fi
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41
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42 # Check if kerneldir contains a Makefile
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43 if [ ! -f $LINUXDIR/Makefile ]
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44 then
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45 echo "Directory $LINUXDIR does not exist or is not a kernel source directory";
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46 exit 1;
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47 fi
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48
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49 # Get kernel version
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50 VERSION=`grep -s VERSION <$LINUXDIR/Makefile | head -n 1 | sed s/'VERSION = '//`
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51 PATCHLEVEL=`grep -s PATCHLEVEL <$LINUXDIR/Makefile | head -n 1 | sed s/'PATCHLEVEL = '//`
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52 SUBLEVEL=`grep -s SUBLEVEL <$LINUXDIR/Makefile | head -n 1 | sed s/'SUBLEVEL = '//`
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53
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54 # Can we handle this version?
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55 if [ $VERSION -ne 2 -o $PATCHLEVEL -lt 6 ]
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56 then
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57 echo "Cannot patch kernel version $VERSION.$PATCHLEVEL.$SUBLEVEL, must be 2.6.x or higher"
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58 exit 1;
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59 fi
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60
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61
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62 KCONFIG=$LINUXDIR/fs/Kconfig
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63 KCONFIGOLD=$LINUXDIR/fs/Kconfig.pre.yaffs
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64 YAFFS_PATCHED_STRING=`grep -s yaffs <$KCONFIG | head -n 1`
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65
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66 MAKEFILE=$LINUXDIR/fs/Makefile
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67 MAKEFILEOLD=$LINUXDIR/fs/Makefile.pre.yaffs
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68
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69 if [ ! -z "$YAFFS_PATCHED_STRING" ]
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70 then
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71 YAFFS_PATCHED=0
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72 echo "$KCONFIG already mentions YAFFS, so we will not change it"
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73 else
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74 # Change the fs/Kconfig file
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75 # Save the old Kconfig
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76 # Copy all stuff up to JFFS
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77 # Insert some YAFFS stuff
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78 # Copy all the rest of the stuff
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79
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80 YAFFS_PATCHED=1
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81 echo "Updating $KCONFIG"
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82 mv -f $KCONFIG $KCONFIGOLD
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83 sed -n -e "/JFFS/,99999 ! p" $KCONFIGOLD >$KCONFIG
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84 echo "">>$KCONFIG
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85 echo "# Patched by YAFFS" >>$KCONFIG
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86 echo "source \"fs/yaffs2/Kconfig\"">>$KCONFIG
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87 echo "">>$KCONFIG
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88 sed -n -e "/JFFS/,99999 p" $KCONFIGOLD >>$KCONFIG
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89
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90 # now do fs/Makefile -- simply add the target at the end
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91 echo "Updating $MAKEFILE"
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92 cp -f $MAKEFILE $MAKEFILEOLD
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93 echo "">>$MAKEFILE
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94 echo "# Patched by YAFFS" >>$MAKEFILE
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95 echo "obj-\$(CONFIG_YAFFS_FS) += yaffs2/" >>$MAKEFILE
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96
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97 fi
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98
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99 YAFFSDIR=$LINUXDIR/fs/yaffs2
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100
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101 if [ -e $YAFFSDIR ]
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102 then
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103 echo "$YAFFSDIR exists, not patching"
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104 else
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105 mkdir $LINUXDIR/fs/yaffs2
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106 cp Makefile.kernel $LINUXDIR/fs/yaffs2/Makefile
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107 cp Kconfig $LINUXDIR/fs/yaffs2
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108 cp *.c *.h $LINUXDIR/fs/yaffs2
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109 fi