CHROMEOS: add chrome kernel infrastructure
[linux-3.10.git] / 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 family='chromeos'
24 bindir="`pwd`/chromeos/scripts"
25 common_conf="$confdir/config.common.$family"
26 tmpdir=`mktemp -d`
27
28 if [ "$mode" = "genconfig" ]; then
29         keep=1
30         mode="oldconfig"
31         test -d CONFIGS || mkdir CONFIGS
32 fi
33
34 test -d build || mkdir build
35
36 for arch in $archs; do
37         # Map debian archs to kernel archs
38         case "$arch" in
39                 amd64)  kernarch="x86_64"       ;;
40                 lpia)   kernarch="x86" ;;
41                 sparc)  kernarch="sparc64"      ;;
42                 armel)  kernarch="arm" ;;
43                 *)      kernarch="$arch"        ;;
44         esac
45
46         echo ""
47         echo "***************************************"
48         echo "* Processing $arch ($kernarch) ... "
49         archconfdir=$confdir/$arch
50         flavourconfigs=$(cd $archconfdir && ls config.flavour.*[^~])
51
52         # Merge configs
53         # We merge config.common.ubuntu + config.common.<arch> +
54         # config.flavour.<flavour>
55
56         for config in $flavourconfigs; do
57                 fullconf="$tmpdir/$arch-$config-full"
58                 case $config in
59                 *)
60                         : >"$fullconf"
61                         if [ -f $common_conf ]; then
62                                 cat $common_conf >> "$fullconf"
63                         fi
64                         if [ -f $archconfdir/config.common.$arch ]; then
65                                 cat $archconfdir/config.common.$arch >> "$fullconf"
66                         fi
67                         cat "$archconfdir/$config" >>"$fullconf"
68                         ;;
69                 esac
70         done
71
72         for config in $flavourconfigs; do
73                 if [ -f $archconfdir/$config ]; then
74                         fullconf="$tmpdir/$arch-$config-full"
75                         cat "$fullconf" > build/.config
76                         # Call oldconfig or menuconfig
77                         case "$mode" in
78                             oldconfig)
79                                 # Weed out incorrect config parameters
80                                 echo "* Run silentoldconfig on $arch/$config ..."
81                                 make O=`pwd`/build ARCH=$kernarch silentoldconfig ;;
82                             editconfig)
83                                 # Interactively edit config parameters
84                                 echo " * Run menuconfig on $arch/$config... Press a key."
85                                 read
86                                 make O=`pwd`/build ARCH=$kernarch menuconfig ;;
87                             *)  # Bad!
88                                 exit 1 ;;
89                         esac
90                         cat build/.config > $archconfdir/$config
91                         if [ "$keep" = "1" ]; then
92                                 cat build/.config > CONFIGS/$arch-$config
93                         fi
94                 else
95                         echo "!! Config not found $archconfdir/$config..."
96                 fi
97         done
98
99         echo "Running splitconfig for $arch"
100         echo
101
102         # Can we make this more robust by avoiding $tmpdir completely?
103         # This approach was used for now because I didn't want to change
104         # splitconfig
105         (cd $archconfdir; rm config.common.$arch; $bindir/splitconfig; \
106             mv config.common config.common.$arch; \
107             cp config.common.$arch $tmpdir)
108 done
109
110 rm -f $common_conf
111
112 # Now run splitconfig on all the config.common.<arch> copied to
113 # $tmpdir
114 (cd $tmpdir; $bindir/splitconfig)
115 (
116         cd $confdir;
117         rm -f *-full
118         grep -v 'is UNMERGABLE' <$tmpdir/config.common >$common_conf
119         for arch in $archs; do
120                 grep -v 'is UNMERGABLE' <$tmpdir/config.common.$arch \
121                         >$arch/config.common.$arch
122         done
123 )