diff --git a/Makefile.in b/Makefile.in
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+# Copyright (C) 2018 Open Networking Foundation
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+########################################################################
+##
+##
+##        Config
+##
+##
+DEVICE ?= asfvolt16
+#
+# Three vendor proprietary source files are required to build BAL.
+# SW-BCM68620_<VER>.zip - Broadcom BAL source and Maple SDK.
+# sdk-all-<SDK_VER>.tar.gz - Broadcom Qumran SDK.
+# ACCTON_BAL_<BAL_VER>-<DEV_VER>.patch - Accton/Edgecore's patch.
+BAL_MAJOR_VER = 02.06
+BAL_VER = 2.6.0.1
+SDK_VER = 6.5.7
+DEV_VER ?= 201804301043
+#
+# Version of Open Network Linux (ONL).
+ONL_KERN_VER_MAJOR = 3.7
+ONL_KERN_VER_MINOR = 10
+#
+# Build directory
+BUILD_DIR = build
+#
+# GRPC installation
+GRPC_ADDR = https://github.com/grpc/grpc
+GRPC_DST = /tmp/grpc
+GRPC_VER = v1.10.x
+
+USER := $(shell echo $(USER))
+#
+########################################################################
+##
+##
+##        Install prerequisites
+##
+##
+HOST_SYSTEM = $(shell uname | cut -f 1 -d_)
+SYSTEM ?= $(HOST_SYSTEM)
+
+LIBGRPC_PATH=$(shell pkg-config --libs-only-L grpc | sed s/-L// | sed s/\ //g)
+LIBPROTOBUF_PATH=$(shell PKG_CONFIG_ALLOW_SYSTEM_LIBS=true pkg-config --libs-only-L protobuf | sed s/-L// | sed s/\ //g)
+
+CXX = @CXX@
+CXXFLAGS += @CXXFLAGS@
+CXXFLAGS += $(shell pkg-config --cflags-only-I grpc++)
+CPPFLAGS += `pkg-config --cflags protobuf grpc`
+CXXFLAGS += -std=c++11 -fpermissive -Wno-literal-suffix
+LDFLAGS += @LDFLAGS@
+LDFLAGS += `pkg-config --libs protobuf grpc++ grpc` -ldl -lgpr
+
+export CXX CXXFLAGS
+
+prereq:
+	sudo apt-get -q -y install git pkg-config build-essential autoconf libtool libgflags-dev libgtest-dev clang libc++-dev unzip docker.io
+	sudo apt-get install -y build-essential autoconf libssl-dev gawk debhelper dh-systemd init-system-helpers
+
+	# Install GRPC, libprotobuf and protoc
+	rm -rf $(GRPC_DST)
+	git clone -b $(GRPC_VER) $(GRPC_ADDR) $(GRPC_DST)
+	cd $(GRPC_DST) && git submodule update --init
+	cd $(GRPC_DST)/third_party/protobuf && ./autogen.sh && ./configure
+	make -C $(GRPC_DST)/third_party/protobuf
+	sudo make -C $(GRPC_DST)/third_party/protobuf install
+	sudo ldconfig
+	make -C $(GRPC_DST)
+	sudo make -C $(GRPC_DST) install
+	sudo ldconfig
+
+docker:
+	echo $(USER)
+	sudo groupadd -f docker
+ifneq "$(USER)" ""
+	sudo usermod -aG docker $(USER)
+endif
+
+########################################################################
+##
+##
+##        ONL
+##
+##
+ONL_KERN_VER = $(ONL_KERN_VER_MAJOR).$(ONL_KERN_VER_MINOR)
+ONL_REPO = $(DEVICE)-onl
+ONL_DIR = $(BUILD_DIR)/$(ONL_REPO)
+onl:
+	if [ ! -d "$(ONL_DIR)/OpenNetworkLinux" ]; then \
+		mkdir -p $(ONL_DIR); \
+		git clone https://gerrit.opencord.org/$(ONL_REPO) $(ONL_DIR); \
+		make -C $(ONL_DIR) $(DEVICE)-$(ONL_KERN_VER_MAJOR); \
+	fi;
+onl-force:
+	make -C $(ONL_DIR) $(DEVICE)-$(ONL_KERN_VER_MAJOR)
+distclean-onl:
+	sudo rm -rf $(ONL_DIR)
+
+########################################################################
+##
+##
+##        BAL
+##
+##
+BAL_ZIP = SW-BCM68620_$(subst .,_,$(BAL_VER)).zip
+SDK_ZIP = sdk-all-$(SDK_VER).tar.gz
+ACCTON_PATCH = ACCTON_BAL_$(BAL_VER)-V$(DEV_VER).patch
+OPENOLT_BAL_PATCH = OPENOLT_BAL_$(BAL_VER).patch
+BAL_DIR = $(BUILD_DIR)/$(DEVICE)-bal
+ONL_KERNDIR = $(PWD)/$(ONL_DIR)/OpenNetworkLinux/packages/base/amd64/kernels/kernel-$(ONL_KERN_VER_MAJOR)-x86-64-all/builds
+MAPLE_KERNDIR = $(BAL_DIR)/bcm68620_release/$(DEVICE)/kernels
+BCM_SDK = $(BAL_DIR)/bal_release/3rdparty/bcm-sdk
+BALLIBDIR = $(BAL_DIR)/bal_release/build/core/src/apps/bal_api_dist_shared_lib
+BALLIBNAME = bal_api_dist
+BAL_INC = -I$(BAL_DIR)/bal_release/src/common/os_abstraction \
+	-I$(BAL_DIR)/bal_release/src/common/os_abstraction/posix \
+	-I$(BAL_DIR)/bal_release/src/common/config \
+	-I$(BAL_DIR)/bal_release/src/core/platform \
+	-I$(BAL_DIR)/bal_release/src/core/main \
+	-I$(BAL_DIR)/bal_release/src/common/include \
+	-I$(BAL_DIR)/bal_release/src/lib/libbalapi \
+	-I$(BAL_DIR)/bal_release/src/balapiend \
+	-I$(BAL_DIR)/bal_release/src/common/dev_log \
+	-I$(BAL_DIR)/bal_release/src/common/bal_dist_utils  \
+	-I$(BAL_DIR)/bal_release/src/lib/libtopology \
+	-I$(BAL_DIR)/bal_release/src/lib/libcmdline \
+	-I$(BAL_DIR)/bal_release/src/lib/libutils \
+	-I$(BAL_DIR)/bal_release/3rdparty/maple/sdk/host_driver/utils \
+	-I$(BAL_DIR)/bal_release/3rdparty/maple/sdk/host_driver/model \
+	-I$(BAL_DIR)/bal_release/3rdparty/maple/sdk/host_driver/api \
+	-I$(BAL_DIR)/bal_release/3rdparty/maple/sdk/host_reference/cli
+CXXFLAGS += $(BAL_INC) -I $(BAL_DIR)/lib/cmdline
+CXXFLAGS += -DBCMOS_MSG_QUEUE_DOMAIN_SOCKET -DBCMOS_MSG_QUEUE_UDP_SOCKET -DBCMOS_MEM_CHECK -DBCMOS_SYS_UNITTEST -DENABLE_LOG
+
+sdk: onl
+ifeq ("$(wildcard $(BAL_DIR))","")
+	mkdir $(BAL_DIR)
+	unzip download/$(BAL_ZIP) -d $(BAL_DIR)
+	cp download/$(SDK_ZIP) $(BCM_SDK)
+	chmod -R 744 $(BAL_DIR)
+	cat download/$(ACCTON_PATCH) | patch -p1 -d $(BAL_DIR)
+	mkdir -p $(MAPLE_KERNDIR)
+	ln -s $(ONL_KERNDIR)/linux-$(ONL_KERN_VER) $(MAPLE_KERNDIR)/linux-$(ONL_KERN_VER)
+	ln -s $(ONL_DIR)/OpenNetworkLinux/packages/base/any/kernels/archives/linux-$(ONL_KERN_VER).tar.xz $(MAPLE_KERNDIR)/linux-$(ONL_KERN_VER).tar.xz
+	ln -s $(ONL_DIR)/OpenNetworkLinux/packages/base/any/kernels/$(ONL_KERN_VER_MAJOR)/configs/x86_64-all/x86_64-all.config $(MAPLE_KERNDIR)/x86_64-all.config
+	make -C $(BAL_DIR)/bal_release BOARD=$(DEVICE) maple_sdk_dir
+	cat download/$(OPENOLT_BAL_PATCH) | patch -p1 -d $(BAL_DIR)
+	make -C $(BAL_DIR)/bal_release BOARD=$(DEVICE) maple_sdk
+	make -C $(BAL_DIR)/bal_release BOARD=$(DEVICE) switch_sdk_dir
+	make -C $(BAL_DIR)/bal_release BOARD=$(DEVICE) switch_sdk
+	KERNDIR=$(ONL_KERNDIR)/linux-$(ONL_KERN_VER) BOARD=$(DEVICE) ARCH=x86_64 SDKBUILD=build_bcm_user make -C $(BCM_SDK)/build-$(DEVICE)/sdk-all-$(SDK_VER)/systems/linux/user/x86-generic_64-2_6
+	make -C $(BAL_DIR)/bal_release BOARD=$(DEVICE) bal
+	echo 'auto_create_interface_tm=y' >> $(BAL_DIR)/bal_release/3rdparty/maple/cur/$(DEVICE)/board_files/broadcom/bal_config.ini
+	make -C $(BAL_DIR)/bal_release BOARD=$(DEVICE) release_board
+endif
+
+bal: sdk
+	make -C $(BAL_DIR)/bal_release BOARD=$(DEVICE) bal
+	echo 'auto_create_interface_tm=y' >> $(BAL_DIR)/bal_release/3rdparty/maple/cur/asfvolt16/board_files/broadcom/bal_config.ini
+	make -C $(BAL_DIR)/bal_release BOARD=$(DEVICE) release_board
+
+bal-clean:
+	make -C $(BAL_DIR)/bal_release BOARD=$(DEVICE) clean_bal
+
+########################################################################
+##
+##
+##        OpenOLT API
+##
+##
+OPENOLT_PROTOS_DIR = ./protos
+OPENOLT_API_LIB = $(OPENOLT_PROTOS_DIR)/libopenoltapi.a
+CXXFLAGS += -I$(OPENOLT_PROTOS_DIR) -I$(OPENOLT_PROTOS_DIR)/googleapis/gens
+protos:
+	make -C $(OPENOLT_PROTOS_DIR) all
+protos-clean:
+	-make -C $(OPENOLT_PROTOS_DIR) clean
+
+########################################################################
+##
+##
+##        common
+##
+##
+common/%.o: common/%.cc
+	$(CXX) $(CXXFLAGS) -I./common -c $< -o $@
+
+########################################################################
+##
+##
+##        sim
+##
+##
+SIM_SRCS = $(wildcard sim/*.cc) $(wildcard common/*.cc)
+SIM_OBJS = $(SIM_SRCS:.cc=.o)
+SIM_DEPS = $(SIM_SRCS:.cc=.d)
+sim: sim/openoltsim
+sim/openoltsim: protos $(SIM_OBJS)
+	$(CXX) -pthread -L/usr/local/lib $(SIM_OBJS) $(OPENOLT_API_LIB) /usr/local/lib/libprotobuf.a -o $@ -lgrpc++ -lgrpc -lpthread -ldl
+sim/%.o: sim/%.cc
+	$(CXX) -std=c++11 -fpermissive -Wno-literal-suffix -I./common -I$(OPENOLT_PROTOS_DIR) -I$(OPENOLT_PROTOS_DIR)/googleapis/gens -c $< -o $@
+clean-sim:
+	rm -f sim/openoltsim $(SIM_OBJS) $(SIM_DEPS)
+
+########################################################################
+##
+##
+##        openolt
+##
+##
+SRCS = $(wildcard src/*.cc) $(wildcard common/*.cc)
+OBJS = $(SRCS:.cc=.o)
+DEPS = $(SRCS:.cc=.d)
+.DEFAULT_GOAL := all
+all: $(BUILD_DIR)/openolt
+$(BUILD_DIR)/openolt: sdk protos $(OBJS)
+	$(CXX) -pthread $(LDFLAGS) -L$(BALLIBDIR) $(OBJS) $(OPENOLT_API_LIB) $(LIBPROTOBUF_PATH)/libprotobuf.a -o $@ -l$(BALLIBNAME)
+	ln -sf $(PWD)/$(BAL_DIR)/bcm68620_release/$(DEVICE)/release/release_$(DEVICE)_V$(BAL_MAJOR_VER).$(DEV_VER).tar.gz $(BUILD_DIR)/.
+	ln -sf $(PWD)/$(BAL_DIR)/bcm68620_release/$(DEVICE)/release/broadcom/libbal_api_dist.so $(BUILD_DIR)/.
+	ln -sf $(PWD)/$(BAL_DIR)/bal_release/build/core/src/apps/bal_core_dist/bal_core_dist $(BUILD_DIR)/.
+	ln -sf $(LIBGRPC_PATH)/libgrpc.so.6 $(BUILD_DIR)/libgrpc.so.6
+	ln -sf $(LIBGRPC_PATH)/libgrpc++.so.1 $(BUILD_DIR)/libgrpc++.so.1
+src/%.o: src/%.cc
+	$(CXX) $(CXXFLAGS) -I./common -c $< -o $@
+
+deb:
+	cp $(BUILD_DIR)/release_$(DEVICE)_V$(BAL_MAJOR_VER).$(DEV_VER).tar.gz mkdebian/debian
+	cp $(BUILD_DIR)/openolt mkdebian/debian
+	cp $(BUILD_DIR)/libgrpc.so.6 mkdebian/debian
+	cp $(BUILD_DIR)/libgrpc++.so.1 mkdebian/debian
+	cp -a scripts/init.d mkdebian/debian
+	cd mkdebian && ./build_$(DEVICE)_deb.sh
+	mv *.deb $(BUILD_DIR)/openolt.deb
+	make deb-cleanup
+
+src/%.o: %.cpp
+	$(CXX) -MMD -c $< -o $@
+
+deb-cleanup:
+	rm -f mkdebian/debian/$(DEVICE).debhelper.log
+	rm -f mkdebian/debian/$(DEVICE).postinst.debhelper
+	rm -f mkdebian/debian/$(DEVICE).postrm.debhelper
+	rm -f mkdebian/debian/$(DEVICE).substvars
+	rm -rf mkdebian/debian/$(DEVICE)/
+	rm -f mkdebian/debian/libgrpc++.so.1
+	rm -f mkdebian/debian/libgrpc.so.6
+	rm -f mkdebian/debian/openolt
+	rm -f mkdebian/debian/release_$(DEVICE)_V$(BAL_MAJOR_VER).$(DEV_VER).tar.gz
+	rm -rf mkdebian/debian/tmp/
+	rm -f $(DEVICE)_$(BAL_VER)+edgecore-V$(DEV_VER)_amd64.changes
+
+clean: protos-clean deb-cleanup
+	rm -f $(OBJS) $(DEPS)
+	rm -rf protos/googleapis
+	rm -f $(BUILD_DIR)/libgrpc.so.6 $(BUILD_DIR)/libgrpc++.so.1
+	rm -f $(BUILD_DIR)/libbal_api_dist.so
+	rm -f $(BUILD_DIR)/openolt
+	rm -f $(BUILD_DIR)/bal_core_dist
+	rm -f $(BUILD_DIR)/release_$(DEVICE)_V$(BAL_MAJOR_VER).$(DEV_VER).tar.gz
+	rm -f $(BUILD_DIR)/openolt.deb
+
+distclean:
+	rm -rf $(BUILD_DIR)
+
+.PHONY: onl sdk bal protos prereq sim