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+# SPDX-FileCopyrightText: 2020 Efabless Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+CARAVEL_ROOT?=$(PWD)/caravel
+PRECHECK_ROOT?=${HOME}/mpw_precheck
+SIM ?= RTL
+DUMP ?= OFF
+
+# Install lite version of caravel, (1): caravel-lite, (0): caravel
+CARAVEL_LITE?=1
+
+ifeq ($(CARAVEL_LITE),1) 
+	CARAVEL_NAME := caravel-lite
+	CARAVEL_REPO := https://github.com/efabless/caravel-lite 
+	CARAVEL_TAG := 'mpw-5a'
+else
+	CARAVEL_NAME := caravel
+	CARAVEL_REPO := https://github.com/efabless/caravel 
+	CARAVEL_TAG := 'mpw-5a'
+endif
+
+# Install caravel as submodule, (1): submodule, (0): clone
+SUBMODULE?=1
+
+#RISCV COMPLIANCE test Environment
+COREMARK_DIR   = verilog/dv/riscv_regress/dependencies/coremark
+RISCV_COMP_DIR = verilog/dv/riscv_regress/dependencies/riscv-compliance
+RISCV_TEST_DIR = verilog/dv/riscv_regress/dependencies/riscv-tests
+
+COREMARK_REPO   =  https://github.com/eembc/coremark
+RISCV_COMP_REPO =  https://github.com/riscv/riscv-compliance
+RISCV_TEST_REPO =  https://github.com/riscv/riscv-tests
+
+COREMARK_BRANCH   =  7f420b6bdbff436810ef75381059944e2b0d79e8
+RISCV_COMP_BRANCH =  d51259b2a949be3af02e776c39e135402675ac9b
+RISCV_TEST_BRANCH =  e30978a71921159aec38eeefd848fca4ed39a826
+
+# Include Caravel Makefile Targets
+.PHONY: % : check-caravel
+%: 
+	export CARAVEL_ROOT=$(CARAVEL_ROOT) && $(MAKE) -f $(CARAVEL_ROOT)/Makefile $@
+
+# Verify Target for running simulations
+.PHONY: verify
+verify:
+	cd ./verilog/dv/ && \
+	export SIM=${SIM} DUMP=${DUMP} && \
+		$(MAKE) -j$(THREADS)
+
+# Install DV setup
+.PHONY: simenv
+simenv:
+	docker pull dineshannayya/dv_setup:latest
+
+PATTERNS=$(shell cd verilog/dv && find * -maxdepth 0 -type d)
+DV_PATTERNS = $(foreach dv, $(PATTERNS), verify-$(dv))
+TARGET_PATH=$(shell pwd)
+PDK_PATH=${PDK_ROOT}/sky130A
+VERIFY_COMMAND="cd ${TARGET_PATH}/verilog/dv/$* && export SIM=${SIM} DUMP=${DUMP} && make"
+$(DV_PATTERNS): verify-% : ./verilog/dv/% check-coremark_repo check-riscv_comp_repo check-riscv_test_repo
+	docker run -v ${TARGET_PATH}:${TARGET_PATH} -v ${PDK_PATH}:${PDK_PATH} \
+                -v ${CARAVEL_ROOT}:${CARAVEL_ROOT} \
+                -e TARGET_PATH=${TARGET_PATH} -e PDK_PATH=${PDK_PATH} \
+                -e CARAVEL_ROOT=${CARAVEL_ROOT} \
+                -u $(id -u $$USER):$(id -g $$USER) dineshannayya/dv_setup:mpw5 \
+                sh -c $(VERIFY_COMMAND)
+				
+# Openlane Makefile Targets
+BLOCKS = $(shell cd openlane && find * -maxdepth 0 -type d)
+.PHONY: $(BLOCKS)
+$(BLOCKS): %:
+	export CARAVEL_ROOT=$(CARAVEL_ROOT) && cd openlane && $(MAKE) $*
+
+# Install caravel
+.PHONY: install
+install:
+ifeq ($(SUBMODULE),1)
+	@echo "Installing $(CARAVEL_NAME) as a submodule.."
+# Convert CARAVEL_ROOT to relative path because .gitmodules doesn't accept '/'
+	$(eval CARAVEL_PATH := $(shell realpath --relative-to=$(shell pwd) $(CARAVEL_ROOT)))
+	@if [ ! -d $(CARAVEL_ROOT) ]; then git submodule add --name $(CARAVEL_NAME) $(CARAVEL_REPO) $(CARAVEL_PATH); fi
+	@git submodule update --init
+	@cd $(CARAVEL_ROOT); git checkout $(CARAVEL_BRANCH)
+	$(MAKE) simlink
+else
+	@echo "Installing $(CARAVEL_NAME).."
+	@git clone -b $(CARAVEL_TAG) $(CARAVEL_REPO) $(CARAVEL_ROOT)
+endif
+
+# Create symbolic links to caravel's main files
+.PHONY: simlink
+simlink: check-caravel
+### Symbolic links relative path to $CARAVEL_ROOT 
+	$(eval MAKEFILE_PATH := $(shell realpath --relative-to=openlane $(CARAVEL_ROOT)/openlane/Makefile))
+	$(eval PIN_CFG_PATH  := $(shell realpath --relative-to=openlane/user_project_wrapper $(CARAVEL_ROOT)/openlane/user_project_wrapper_empty/pin_order.cfg))
+	mkdir -p openlane
+	mkdir -p openlane/user_project_wrapper
+	cd openlane &&\
+	ln -sf $(MAKEFILE_PATH) Makefile
+	cd openlane/user_project_wrapper &&\
+	ln -sf $(PIN_CFG_PATH) pin_order.cfg
+
+# Update Caravel
+.PHONY: update_caravel
+update_caravel: check-caravel
+	cd $(CARAVEL_ROOT)/ && git checkout $(CARAVEL_TAG) && git pull
+
+# Uninstall Caravel
+.PHONY: uninstall
+uninstall: 
+	rm -rf $(CARAVEL_ROOT)
+
+# Install Openlane
+.PHONY: openlane
+openlane: 
+	cd openlane && $(MAKE) openlane
+
+# Install Pre-check
+# Default installs to the user home directory, override by "export PRECHECK_ROOT=<precheck-installation-path>"
+.PHONY: precheck
+precheck:
+	@git clone --depth=1 --branch mpw-5 https://github.com/efabless/mpw_precheck.git $(PRECHECK_ROOT)
+	@docker pull efabless/mpw_precheck:mpw5
+
+.PHONY: run-precheck
+run-precheck: check-precheck check-pdk check-caravel
+	$(eval INPUT_DIRECTORY := $(shell pwd))
+	cd $(PRECHECK_ROOT) && \
+	docker run -e INPUT_DIRECTORY=$(INPUT_DIRECTORY) -e PDK_ROOT=$(PDK_ROOT) -v $(PRECHECK_ROOT):$(PRECHECK_ROOT) -v $(INPUT_DIRECTORY):$(INPUT_DIRECTORY) -v $(PDK_ROOT):$(PDK_ROOT) \
+	-u $(shell id -u $(USER)):$(shell id -g $(USER)) efabless/mpw_precheck:latest bash -c "cd $(PRECHECK_ROOT) ; python3 mpw_precheck.py --pdk_root $(PDK_ROOT) --input_directory $(INPUT_DIRECTORY)"
+
+# Clean 
+.PHONY: clean
+clean:
+	cd ./verilog/dv/ && \
+		$(MAKE) -j$(THREADS) clean
+
+check-caravel:
+	@if [ ! -d "$(CARAVEL_ROOT)" ]; then \
+		echo "Caravel Root: "$(CARAVEL_ROOT)" doesn't exists, please export the correct path before running make. "; \
+		exit 1; \
+	fi
+
+check-precheck:
+	@if [ ! -d "$(PRECHECK_ROOT)" ]; then \
+		echo "Pre-check Root: "$(PRECHECK_ROOT)" doesn't exists, please export the correct path before running make. "; \
+		exit 1; \
+	fi
+
+check-pdk:
+	@if [ ! -d "$(PDK_ROOT)" ]; then \
+		echo "PDK Root: "$(PDK_ROOT)" doesn't exists, please export the correct path before running make. "; \
+		exit 1; \
+	fi
+
+check-coremark_repo:
+	@if [ ! -d "$(COREMARK_DIR)" ]; then \
+		echo "Installing Core Mark Repo.."; \
+		git clone $(COREMARK_REPO) $(COREMARK_DIR); \
+		cd $(COREMARK_DIR); git checkout $(COREMARK_BRANCH); \
+	fi
+
+check-riscv_comp_repo:
+	@if [ ! -d "$(RISCV_COMP_DIR)" ]; then \
+		echo "Installing Risc V Complance Repo.."; \
+		git clone $(RISCV_COMP_REPO) $(RISCV_COMP_DIR); \
+		cd $(RISCV_COMP_DIR); git checkout $(RISCV_COMP_BRANCH); \
+	fi
+
+check-riscv_test_repo:
+	@if [ ! -d "$(RISCV_TEST_DIR)" ]; then \
+		echo "Installing RiscV Test Repo.."; \
+		git clone $(RISCV_TEST_REPO) $(RISCV_TEST_DIR); \
+		cd $(RISCV_TEST_DIR); git checkout $(RISCV_TEST_BRANCH); \
+	fi
+
+.PHONY: help
+help:
+	cd $(CARAVEL_ROOT) && $(MAKE) help 
+	@$(MAKE) -pRrq -f $(lastword $(MAKEFILE_LIST)) : 2>/dev/null | awk -v RS= -F: '/^# File/,/^# Finished Make data base/ {if ($$1 !~ "^[#.]") {print $$1}}' | sort | egrep -v -e '^[^[:alnum:]]' -e '^$@$$'