chromeos/scripts/kernelconfig

   1 #!/bin/bash
   2
   3 # Script to merge all configs and run 'make silentoldconfig' on it to wade out bad juju.
   4 # Then split the configs into distro-commmon and flavour-specific parts
   5
   6 # We have to be in the top level kernel source directory
   7 if [ ! -f MAINTAINERS ] || [ ! -f Makefile ]; then
   8         echo "This does not appear to be the kernel source directory." 1>&2
   9         exit 1
  10 fi
  11
  12 mode=${1:?"Usage: $0 [oldconfig|editconfig]"}
  13 case "$mode" in
  14     oldconfig)  ;; # All is good
  15     editconfig) ;; # All is good
  16     genconfig)  ;; # All is good
  17     *) echo "$0 called with invalid mode" 1>&2
  18        exit 1 ;;
  19 esac
  20 kerneldir="`pwd`"
  21 confdir="$kerneldir/chromeos/config"
  22 archs="x86_64 i386 armel"
  23 bindir="`pwd`/chromeos/scripts"
  24 base_conf="$confdir/base.config"
  25 tmpdir=`mktemp -d`
  26
  27 if [ "$mode" = "genconfig" ]; then
  28         keep=1
  29         mode="oldconfig"
  30         test -d CONFIGS || mkdir CONFIGS
  31 fi
  32
  33 test -d build || mkdir build
  34
  35 for arch in $archs; do
  36         # Map debian archs to kernel archs
  37         case "$arch" in
  38                 amd64)  kernarch="x86_64"       ;;
  39                 lpia)   kernarch="x86" ;;
  40                 sparc)  kernarch="sparc64"      ;;
  41                 armel)  kernarch="arm" ;;
  42                 *)      kernarch="$arch"        ;;
  43         esac
  44
  45         echo ""
  46         echo "***************************************"
  47         echo "* Processing $arch ($kernarch) ... "
  48         archconfdir=$confdir/$arch
  49         flavourconfigs=$(cd $archconfdir && ls *.flavour.config)
  50
  51         # Merge configs
  52         # We merge base.config + common.config + <flavour>.flavour.config
  53
  54         for config in $flavourconfigs; do
  55                 fullconf="$tmpdir/$arch-$config-full"
  56                 cp $base_conf "$fullconf"
  57                 cat $archconfdir/common.config >> "$fullconf"
  58                 cat $archconfdir/$config >> "$fullconf"
  59         done
  60
  61         for config in $flavourconfigs; do
  62                 fullconf="$tmpdir/$arch-$config-full"
  63                 mv "$fullconf" build/.config
  64                 # Call oldconfig or menuconfig
  65                 case "$mode" in
  66                     oldconfig)
  67                         # Weed out incorrect config parameters
  68                         echo "* Run silentoldconfig on $arch/$config ..."
  69                         make O=`pwd`/build ARCH=$kernarch silentoldconfig ;;
  70                     editconfig)
  71                         # Interactively edit config parameters
  72                         echo "* $arch/$config: press <Enter> to edit, S to skip"
  73                         read -s -n 1
  74                         if [ $REPLY = 's' -o $REPLY = 'S' ]; then
  75                             echo "* Skip: running silentoldconfig"
  76                             make O=`pwd`/build ARCH=$kernarch silentoldconfig
  77                         else
  78                             echo "* Running menuconfig"
  79                             make O=`pwd`/build ARCH=$kernarch menuconfig
  80                         fi ;;
  81                     *)  # Bad!
  82                         exit 1 ;;
  83                 esac
  84                 cat build/.config > $archconfdir/$config
  85                 if [ "$keep" = "1" ]; then
  86                         make O=`pwd`/build ARCH=$kernarch oldconfig
  87                         make O=`pwd`/build ARCH=$kernarch savedefconfig
  88                         mv build/.config CONFIGS/$arch-$config
  89                         mv build/defconfig CONFIGS/$arch-$config.def
  90                 fi
  91         done
  92
  93         echo "Running splitconfig for $arch"
  94         echo
  95
  96         # Can we make this more robust by avoiding $tmpdir completely?
  97         # This approach was used for now because I didn't want to change
  98         # splitconfig
  99         (cd $archconfdir; rm common.config; $bindir/splitconfig; \
 100             mv common.config $tmpdir/$arch.config)
 101 done
 102
 103 # Now run splitconfig on all the <arch>.common.config copied to
 104 # $tmpdir
 105 (cd $tmpdir; $bindir/splitconfig)
 106 mv $tmpdir/common.config $base_conf
 107 for arch in $archs; do
 108         mv $tmpdir/$arch.config $confdir/$arch/common.config
 109 done
 110
 111 rm -rf $tmpdir