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|
#!/bin/sh
#
# A small script used to rebuild the Android goldfish kernel image
# See docs/KERNEL.TXT for usage instructions.
#
MACHINE=goldfish
VARIANT=goldfish
OUTPUT=/tmp/kernel-qemu
CROSSPREFIX=arm-eabi-
CONFIG=goldfish
# Extract number of processors
JOBS=`grep -c "processor" /proc/cpuinfo`
JOBS=$(( $JOBS*2 ))
ARCH=arm
OPTION_HELP=no
OPTION_ARMV7=no
OPTION_OUT=
OPTION_CROSS=
OPTION_ARCH=
OPTION_CONFIG=
for opt do
optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
case $opt in
--help|-h|-\?) OPTION_HELP=yes
;;
--armv7)
OPTION_ARMV7=yes
;;
--out=*)
OPTION_OUT=$optarg
;;
--cross=*)
OPTION_CROSS=$optarg
;;
--arch=*)
OPTION_ARCH=$optarg
;;
--config=*)
OPTION_CONFIG=$optarg
;;
-j*)
JOBS=$optarg
;;
*)
echo "unknown option '$opt', use --help"
exit 1
esac
done
if [ $OPTION_HELP = "yes" ] ; then
echo "Rebuild the prebuilt kernel binary for Android's emulator."
echo ""
echo "options (defaults are within brackets):"
echo ""
echo " --help print this message"
echo " --arch=<arch> change target architecture [$ARCH]"
echo " --armv7 build ARMv7 binaries (see note below)"
echo " --out=<directory> output directory [$OUTPUT]"
echo " --cross=<prefix> cross-toolchain prefix [$CROSSPREFIX]"
echo " --config=<name> kernel config name [$CONFIG]"
echo ""
echo "NOTE: --armv7 is equivalent to --config=goldfish_armv7. It is"
echo " ignored if --config=<name> is used."
echo ""
exit 0
fi
if [ -n "$OPTION_ARCH" ]; then
ARCH="$OPTION_ARCH"
fi
if [ -n "$OPTION_CONFIG" ]; then
CONFIG="$OPTION_CONFIG"
elif [ "$OPTION_ARMV7" = "yes" ]; then
CONFIG=goldfish_armv7
fi
# Check that we are in the kernel directory
if [ ! -d arch/$ARCH/mach-$MACHINE ] ; then
echo "Cannot find arch/$ARCH/mach-$MACHINE. Please cd to the kernel source directory."
echo "Aborting."
#exit 1
fi
# Check output directory.
if [ -n "$OPTION_OUT" ] ; then
if [ ! -d "$OPTION_OUT" ] ; then
echo "Output directory '$OPTION_OUT' does not exist ! Aborting."
exit 1
fi
OUTPUT=$OPTION_OUT
else
mkdir -p $OUTPUT
fi
if [ -n "$OPTION_CROSS" ] ; then
CROSSPREFIX="$OPTION_CROSS"
else
case $ARCH in
arm)
CROSSPREFIX=arm-eabi-
ZIMAGE=zImage
;;
x86)
CROSSPREFIX=i686-android-linux-
ZIMAGE=bzImage
;;
*)
echo "ERROR: Unsupported architecture!"
exit 1
;;
esac
fi
export CROSS_COMPILE="$CROSSPREFIX" ARCH SUBARCH=$ARCH
# Check that the cross-compiler is in our path
#
CROSS_COMPILER="${CROSS_COMPILE}gcc"
CROSS_COMPILER_VERSION=$($CROSS_COMPILER --version 2>/dev/null)
if [ $? != 0 ] ; then
echo "It looks like $CROSS_COMPILER is not in your path ! Aborting."
exit 1
fi
rm -f include/asm &&
make ${CONFIG}_defconfig && # configure the kernel
make -j$JOBS # build it
if [ $? != 0 ] ; then
echo "Could not build the kernel. Aborting !"
exit 1
fi
OUTPUT_KERNEL=kernel-qemu
OUTPUT_VMLINUX=vmlinux-qemu
if [ "$OPTION_ARMV7" = "yes" ] ; then
OUTPUT_KERNEL=${OUTPUT_KERNEL}-armv7
OUTPUT_VMLINUX=${OUTPUT_VMLINUX}-armv7
fi
cp -f arch/$ARCH/boot/$ZIMAGE $OUTPUT/$OUTPUT_KERNEL
cp -f vmlinux $OUTPUT/$OUTPUT_VMLINUX
echo "Kernel $CONFIG prebuilt image copied to $OUTPUT successfully !"
exit 0
|
