#!/bin/bash
set -e

KERNEL_MENUCONFIG=no
KERNEL_KEEPCONFIG=no
KERNEL_DEFCONFIG=no
KERNEL_SAVEDEFCONFIG=no
BOARD_DEF=no
TARGET_BUILD=no


BRD="NVCOM02TEM"		#	default board type


usage()
{
	echo -e "\nUsage: ./build_lin3.18.sh [option] [--nvcom02-tem|--mc24r2-em|--mct04em|--mc30sf6em|--mct06em|--mct03pem|--mc0428em-pci]\n"
	echo -e "Choose one of the following options."
	echo -e "\t-m|--menuconfig\t\tCall kernel menuconfig end exit"
	echo -e "\t-d|--defconfig\t\tBuild kernel with defconfig for defined board"
	echo -e "\t-k|--keepconfig\t\tBuild kernel with current .config"
	echo -e "\t-s|--savedefconfig\tCall kernel savedefconfig and exit"
	echo -e "\t-t|--target\t\tCreate target only"
	echo -e "\t-h|--help\t\tPrint this help message and exit"
}


# Source the directory paths
DIR="${BASH_SOURCE%/*}"
if [[ ! -d "$DIR" ]]; then DIR="$PWD"; fi
. "$DIR/project_structure"

export PATH=$PATH:$TOOLCHAIN


if [[ $# > 1 ]] ; then
	BOARD_DEF=yes
	. "$DIR/target_brd.sh" "$2"
	BRD=${TARGET_BOARD}
else
	if [[ ${TARGET_BOARD} ]]; then BRD=${TARGET_BOARD}; fi 
fi

if [[ $# > 0 ]]; then
	key="$1"

	case $key in
	-m|--menuconfig)
		KERNEL_MENUCONFIG=yes
		shift # past argument
		;;
	-d|--defconfig)
		KERNEL_DEFCONFIG=yes
		shift # past argument
		;;
	-k|--keepconfig)
		KERNEL_KEEPCONFIG=yes
		shift # past argument
		;;
	-s|--savedefconfig)
		KERNEL_SAVEDEFCONFIG=yes
		shift # past argument
		;;
	-t|--target)
		TARGET_BUILD=yes
		shift # past argument
		;;
	-h|--help)
		usage
		exit 0
		;;
	*)
		echo "Unknown option!"
		usage
		exit 0
		;;
	esac

	if [[ ${KERNEL_MENUCONFIG} = "yes" ]]; then
		# Run the linux menuconfig tool
		cd "${KERNEL_ROOT}"
		ARCH=mips make menuconfig
		echo -e "\nThe changes will be saved to .config. In order to build with these changes call "
		echo -e "'build_kernel.sh -k'. In order to save the changes in a defconfig file call "
		echo -e "'build_lin3.18.sh -s'.\n"
		usage
		exit 0
	fi

	if [[ ${KERNEL_SAVEDEFCONFIG} = "yes" ]]; then
		cd ${KERNEL_ROOT}
		ARCH=mips make savedefconfig
		#echo ${BRD}

		case ${BRD} in

		MC0428EM-PCI)
			## move generated defconfig to board configs directory
			if [[ -f $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mc0428em-pci/linux_defconfig ]] ; then
				rm $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mc0428em-pci/linux_defconfig
			fi
			cd $KERNEL_ROOT
			mv defconfig linux_defconfig
			mv linux_defconfig $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mc0428em-pci/
			;;

		MC24R2EM)
			## move generated defconfig to board configs directory
			if [[ -f $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mc24r2-em/linux_defconfig ]] ; then
				rm $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mc24r2-em/linux_defconfig
			fi
			cd $KERNEL_ROOT
			mv defconfig linux_defconfig
			mv linux_defconfig $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mc24r2-em/
			;;

		MCT04EM)
			## move generated defconfig to board configs directory
			if [[ -f $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mct04em/linux_defconfig ]] ; then
				rm $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mct04em/linux_defconfig
			fi
			cd $KERNEL_ROOT
			mv defconfig linux_defconfig
			mv linux_defconfig $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mct04em/
			;;

		MC30SF6EM)
			## move generated defconfig to board configs directory
			if [[ -f $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/30sf6em/linux_defconfig ]] ; then
				rm $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/30sf6em/linux_defconfig
			fi
			cd $KERNEL_ROOT
			mv defconfig linux_defconfig
			mv linux_defconfig $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/30sf6em/
			;;

		MCT06EM)
			## move generated defconfig to board configs directory
			if [[ -f $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mct06em/linux_defconfig ]] ; then
				rm $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mct06em/linux_defconfig
			fi
			cd $KERNEL_ROOT
			mv defconfig linux_defconfig
			mv linux_defconfig $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mct06em/
			;;

		MCT03PEM)
			## move generated defconfig to board configs directory
			if [[ -f $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mct03pem/linux_defconfig ]] ; then
				rm $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mct03pem/linux_defconfig
			fi
			cd $KERNEL_ROOT
			mv defconfig linux_defconfig
			mv linux_defconfig $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mct03pem/
			;;

		NVCOM02TEM | *)
			## move generated defconfig to board configs directory
			if [[ -f $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/nvcom02-tem/linux_defconfig ]] ; then
				rm $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/nvcom02-tem/linux_defconfig
			fi
			cd $KERNEL_ROOT
			mv defconfig linux_defconfig
			mv linux_defconfig $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/nvcom02-tem/
			;;

		esac
		
		echo -e "\nSaved defconfig\n"
		usage
		exit 0
	fi

	if [[ ${KERNEL_KEEPCONFIG} = "yes" ]] ; then
		cd "${KERNEL_ROOT}"
		ARCH=mips make $KERNEL_PARALLEL_COMPIL
		#mipsel-buildroot-linux-uclibc-objdump -D vmlinux >vmlinux.dis
		exit 0
	fi

	if [[ ${KERNEL_DEFCONFIG} = "yes" ]] ; then
		cd "${KERNEL_ROOT}"
		
		case ${BRD} in
			MC0428EMPCI)
				## copy board defconfig to linux configs directory
				cp $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mc0428em-pci/$KERNEL_DEFCONFIG_FILE arch/mips/configs
				;;

			MC24R2EM)
				## copy board defconfig to linux configs directory
				cp $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mc24r2-em/$KERNEL_DEFCONFIG_FILE arch/mips/configs
				;;

			MCT04EM)
				## copy board defconfig to linux configs directory
				cp $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mct04em/$KERNEL_DEFCONFIG_FILE arch/mips/configs
				;;

			MC30SF6EM)
				## copy board defconfig to linux configs directory
				cp $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/30sf6em/$KERNEL_DEFCONFIG_FILE arch/mips/configs
				;;
			
			MCT06EM)
				## copy board defconfig to linux configs directory
				cp $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mct06em/$KERNEL_DEFCONFIG_FILE arch/mips/configs
				;;

			MCT03PEM)
				## copy board defconfig to linux configs directory
				cp $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/mct03pem/$KERNEL_DEFCONFIG_FILE arch/mips/configs
				;;
				
			NVCOM02TEM | *)	
				## copy board defconfig to linux configs directory
				cp $PROJECT_OVERLAY_ROOT/buildroot/board/elvees_multicore/nvcom02-tem/$KERNEL_DEFCONFIG_FILE arch/mips/configs
				;;
		esac

		ARCH=mips make defconfig KBUILD_DEFCONFIG=$KERNEL_DEFCONFIG_FILE
		rm arch/mips/configs/$KERNEL_DEFCONFIG_FILE
		#if [[ ${BOARD_DEF} != "yes" ]] ; then
			ARCH=mips make menuconfig
		#fi
		ARCH=mips make $KERNEL_PARALLEL_COMPIL
		#mipsel-buildroot-linux-uclibc-objdump -D vmlinux >vmlinux.dis
		exit 0
	fi

	if [[ ${TARGET_BUILD} = "yes" ]] ; then
		cd "${KERNEL_ROOT}"
		ARCH=mips make V=2 $KERNEL_PARALLEL_COMPIL
		exit 0
	fi

fi
usage
exit 0