#!/bin/sh

BASE=/home/andrew/android/

CC=$BASE/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/arm-eabi-
AR=arm

PREFIX=`echo $1 | sed -e 's/[/]*$//' -e 's/[/]/_/'`
POSTFIX=`date +%Y_%m_%e_%H%M%S`

KSOURCE_DIR=$1
TARGET_NAME=$PREFIX-$POSTFIX
SAMPLE_ZIP=~/android/template.zip

OUTPUT_ZIP=$BASE/Desktop/OUTPUT/$TARGET_NAME.zip
STAGING_DIR==/tmp/kernel

MAKE_OPTS="-C $KSOURCE_DIR ARCH=$AR CROSS_COMPILE=$CC -j8"

do_compile()
{
   echo "do_compile()"

   # Build the kernel image.
   make $MAKE_OPTS zImage # V=1
   if [ $? -ne 0 ]; then return $?; fi

   # Build the kernel modules.
   make $MAKE_OPTS modules
   if [ $? -ne 0 ]; then return $?; fi

}

do_staging()
{
   echo "do_staging()"

   # Unzip the sample update zip to create update structure
   # and provide update scripts / utilities.
   unzip -d $STAGING_DIR $SAMPLE_ZIP
   if [ $? -ne 0 ]; then return $?; fi
}

do_populate()
{
   echo "do_populate()"

   # Copy the resulting image to the staging dir.
   cp -v $KSOURCE_DIR/arch/$AR/boot/zImage $STAGING_DIR/kernel/
   if [ $? -ne 0 ]; then return $?; fi

   # Install the built modules to the staging dir.
   make $MAKE_OPTS INSTALL_MOD_PATH=$STAGING_DIR/system modules_install
   if [ $? -ne 0 ]; then return $?; fi

   # Remove symlinks.
   rm -v  `find $STAGING_DIR -type l`
   if [ $? -ne 0 ]; then return $?; fi

   # Zip up the results.
   cd $STAGING_DIR
   if [ $? -ne 0 ]; then return $?; fi

   cp system/lib/modules/2.6.36.3-gtabkerneldev+/kernel/drivers/net/wireless/bcm4329/*.ko system/lib/modules/
   if [ $? -ne 0 ]; then return $?; fi

   cp system/lib/modules/2.6.36.3-gtabkerneldev+/kernel/drivers/net/wireless/bcm4329/*.ko system/lib/hw/wlan/
   if [ $? -ne 0 ]; then return $?; fi

   zip -r $OUTPUT_ZIP *
   if [ $? -ne 0 ]; then return $?; fi

   cd -
   if [ $? -ne 0 ]; then return $?; fi
}

do_cleanup()
{
   echo "do_cleanup()"

   rm -v -r $STAGING_DIR
   if [ $? -ne 0 ]; then return $?; fi
}

if [ -z $1 ]; then echo "Usage: $0 [source-dir]"; exit 1; fi
do_compile;  if [ $? -ne 0 ]; then exit 1; fi
do_staging;  if [ $? -ne 0 ]; then do_cleanup; exit 1; fi
do_populate; if [ $? -ne 0 ]; then do_cleanup; exit 1; fi
do_cleanup;  if [ $? -ne 0 ]; then exit 1; fi
exit 0