diff --git a/caravel/LICENSE b/caravel/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/caravel/LICENSE
@@ -0,0 +1,202 @@
+
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diff --git a/caravel/Makefile b/caravel/Makefile
new file mode 100644
index 0000000..f5b7702
--- /dev/null
+++ b/caravel/Makefile
@@ -0,0 +1,675 @@
+# 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
+
+# cannot commit files larger than 100 MB to GitHub
+FILE_SIZE_LIMIT_MB = 100
+
+# Commands to be used to compress/uncompress files
+# they must operate **in place** (otherwise, modify the target to delete the
+# intermediate file/archive)
+COMPRESS ?= gzip -n --best
+UNCOMPRESS ?= gzip -d
+ARCHIVE_EXT ?= gz
+
+# The following variables are to build static pattern rules
+
+# Needed to rebuild archives that were previously split
+SPLIT_FILES := $(shell find . -type f -name "*.$(ARCHIVE_EXT).00.split")
+SPLIT_FILES_SOURCES := $(basename $(basename $(basename $(SPLIT_FILES))))
+
+# Needed to uncompress the existing archives
+ARCHIVES := $(shell find . -type f -name "*.$(ARCHIVE_EXT)")
+ARCHIVE_SOURCES := $(basename $(ARCHIVES))
+
+# Needed to compress and split files/archives that are too large
+LARGE_FILES := $(shell find ./gds -type f -name "*.gds")
+LARGE_FILES += $(shell find . -type f -size +$(FILE_SIZE_LIMIT_MB)M -not -path "./.git/*" -not -path "./gds/*" -not -path "./openlane/*")
+LARGE_FILES_GZ := $(addsuffix .$(ARCHIVE_EXT), $(LARGE_FILES))
+LARGE_FILES_GZ_SPLIT := $(addsuffix .$(ARCHIVE_EXT).00.split, $(LARGE_FILES))
+# consider splitting existing archives
+LARGE_FILES_GZ_SPLIT += $(addsuffix .00.split, $(ARCHIVES))
+
+# Caravel Root (Default: pwd)
+# Need to be overwritten if running the makefile from UPRJ_ROOT,
+# If caravel is sub-moduled in the user project, run export CARAVEL_ROOT=$(pwd)/caravel
+CARAVEL_ROOT ?= $(shell pwd)
+
+# User project root
+UPRJ_ROOT ?= $(shell pwd)
+
+# Build tasks such as make ship, make generate_fill, make set_user_id, make final run in the foreground (1) or background (0)
+FOREGROUND ?= 1
+
+# PDK setup configs
+THREADS ?= $(shell nproc)
+STD_CELL_LIBRARY ?= sky130_fd_sc_hd
+SPECIAL_VOLTAGE_LIBRARY ?= sky130_fd_sc_hvl
+IO_LIBRARY ?= sky130_fd_io
+PRIMITIVES_LIBRARY ?= sky130_fd_pr
+SKYWATER_COMMIT ?= c094b6e83a4f9298e47f696ec5a7fd53535ec5eb
+OPEN_PDKS_COMMIT ?= 6c05bc48dc88784f9d98b89d6791cdfd91526676
+INSTALL_SRAM ?= disabled
+
+.DEFAULT_GOAL := ship
+# We need portable GDS_FILE pointers...
+.PHONY: ship
+ship: check-env uncompress uncompress-caravel
+ifeq ($(FOREGROUND),1)
+	@echo "Running make ship in the foreground..."
+	$(MAKE) -f $(CARAVEL_ROOT)/Makefile __ship
+	@echo "Make ship completed." 2>&1 | tee -a ./signoff/build/make_ship.out
+else
+	@echo "Running make ship in the background..."
+	nohup $(MAKE) -f $(CARAVEL_ROOT)/Makefile __ship >/dev/null 2>&1 &
+	tail -f signoff/build/make_ship.out
+	@echo "Make ship completed."  2>&1 | tee -a ./signoff/build/make_ship.out
+endif
+
+__ship:
+	@echo "###############################################"
+	@echo "Generating Caravel GDS (sources are in the 'gds' directory)"
+	@sleep 1
+#### Runs from the CARAVEL_ROOT mag directory 
+	@echo "\
+		random seed `$(CARAVEL_ROOT)/scripts/set_user_id.py -report`; \
+		drc off; \
+		crashbackups stop; \
+		gds readonly true; \
+		gds rescale false; \
+		cif *hier write disable; \
+		cif *array write disable; \
+		gds read $(UPRJ_ROOT)/gds/user_project_wrapper.gds; \
+		load caravel -dereference;\
+		cellname list filepath user_id_programming $(UPRJ_ROOT)/mag;\
+		cellname list filepath user_id_textblock $(UPRJ_ROOT)/mag;\
+		flush user_id_programming;\
+		flush user_id_textblock;\
+		select top cell;\
+		gds write $(UPRJ_ROOT)/gds/caravel.gds; \
+		exit;" > $(UPRJ_ROOT)/mag/mag2gds_caravel.tcl
+### Runs from CARAVEL_ROOT
+	@mkdir -p ./signoff/build
+	@cd $(CARAVEL_ROOT)/mag && PDKPATH=${PDK_ROOT}/sky130A magic -noc -dnull $(UPRJ_ROOT)/mag/mag2gds_caravel.tcl 2>&1 | tee $(UPRJ_ROOT)/signoff/build/make_ship.out
+###	@rm $(UPRJ_ROOT)/mag/mag2gds_caravel.tcl
+
+truck: check-env uncompress uncompress-caravel
+ifeq ($(FOREGROUND),1)
+	@echo "Running make truck in the foreground..."
+	mkdir -p ./signoff
+	mkdir -p ./build
+	$(MAKE) -f $(CARAVEL_ROOT)/Makefile __truck
+	@echo "Make truck completed." 2>&1 | tee -a ./signoff/build/make_truck.out
+else
+	@echo "Running make truck in the background..."
+	mkdir -p ./signoff
+	mkdir -p ./build
+	nohup $(MAKE) -f $(CARAVEL_ROOT)/Makefile __truck >/dev/null 2>&1 &
+	tail -f signoff/build/make_truck.out
+	@echo "Make truck completed."  2>&1 | tee -a ./signoff/build/make_truck.out
+endif
+
+__truck: 
+	@echo "###############################################"
+	@echo "Generating Caravan GDS (sources are in the 'gds' directory)"
+	@sleep 1
+#### Runs from the CARAVEL_ROOT mag directory 
+	@echo "\
+		random seed `$(CARAVEL_ROOT)/scripts/set_user_id.py -report`; \
+		drc off; \
+		crashbackups stop; \
+		gds readonly true; \
+		gds rescale false; \
+		cif *hier write disable; \
+		cif *array write disable; \
+		gds read $(UPRJ_ROOT)/gds/user_analog_project_wrapper.gds; \
+		load caravan -dereference;\
+		cellname list filepath user_id_programming $(UPRJ_ROOT)/mag;\
+		cellname list filepath user_id_textblock $(UPRJ_ROOT)/mag;\
+		flush user_id_programming;\
+		flush user_id_textblock;\
+		select top cell;\
+		gds write $(UPRJ_ROOT)/gds/caravan.gds; \
+		exit;" > $(UPRJ_ROOT)/mag/mag2gds_caravan.tcl
+### Runs from CARAVEL_ROOT
+	@mkdir -p ./signoff/build
+	@cd $(CARAVEL_ROOT)/mag && PDKPATH=${PDK_ROOT}/sky130A magic -noc -dnull $(UPRJ_ROOT)/mag/mag2gds_caravan.tcl 2>&1 | tee $(UPRJ_ROOT)/signoff/build/make_truck.out
+###	@rm $(UPRJ_ROOT)/mag/mag2gds_caravan.tcl
+
+.PHONY: clean
+clean:
+	cd $(CARAVEL_ROOT)/verilog/dv/caravel/mgmt_soc/ && \
+		$(MAKE) -j$(THREADS) clean
+	cd $(CARAVEL_ROOT)/verilog/dv/wb_utests/ && \
+		$(MAKE) -j$(THREADS) clean
+
+
+.PHONY: verify
+verify:
+	cd $(CARAVEL_ROOT)/verilog/dv/caravel/mgmt_soc/ && \
+		$(MAKE) -j$(THREADS) all
+	cd $(CARAVEL_ROOT)/verilog/dv/wb_utests/ && \
+		$(MAKE) -j$(THREADS) all
+
+
+
+#####
+$(LARGE_FILES_GZ): %.$(ARCHIVE_EXT): %
+	@if ! [ $(suffix $<) = ".$(ARCHIVE_EXT)" ]; then\
+		$(COMPRESS) $< > /dev/null &&\
+		echo "$< -> $@";\
+	fi
+
+$(LARGE_FILES_GZ_SPLIT): %.$(ARCHIVE_EXT).00.split: %.$(ARCHIVE_EXT)
+	@if [ -n "$$(find "$<" -prune -size +$(FILE_SIZE_LIMIT_MB)M)" ]; then\
+		split $< -b $(FILE_SIZE_LIMIT_MB)M $<. -d &&\
+		rm $< &&\
+		for file in $$(ls $<.*); do mv "$$file" "$$file.split"; done &&\
+		echo -n "$< -> $$(ls $<.*.split)" | tr '\n' ' ' && echo "";\
+	fi
+
+# This target compresses all files larger than $(FILE_SIZE_LIMIT_MB) MB
+.PHONY: compress
+compress: $(LARGE_FILES_GZ) $(LARGE_FILES_GZ_SPLIT)
+	@echo "Files larger than $(FILE_SIZE_LIMIT_MB) MBytes are compressed!"
+
+
+
+#####
+$(ARCHIVE_SOURCES): %: %.$(ARCHIVE_EXT)
+	@$(UNCOMPRESS) $<
+	@echo "$< -> $@"
+
+.SECONDEXPANSION:
+$(SPLIT_FILES_SOURCES): %: $$(sort $$(wildcard %.$(ARCHIVE_EXT).*.split))
+	@cat $? > $@.$(ARCHIVE_EXT)
+	@rm $?
+	@echo "$? -> $@.$(ARCHIVE_EXT)"
+	@$(UNCOMPRESS) $@.$(ARCHIVE_EXT)
+	@echo "$@.$(ARCHIVE_EXT) -> $@"
+
+
+.PHONY: uncompress
+uncompress: $(SPLIT_FILES_SOURCES) $(ARCHIVE_SOURCES)
+	@echo "All files are uncompressed!"
+
+# Needed for targets that are run from UPRJ_ROOT for which caravel isn't submoduled. 
+.PHONY: uncompress-caravel
+uncompress-caravel:
+	cd $(CARAVEL_ROOT) && \
+	$(MAKE) uncompress
+
+# Digital Wrapper
+# verify that the wrapper was respected
+xor-wrapper: uncompress uncompress-caravel
+### first erase the user's user_project_wrapper.gds
+	sh $(CARAVEL_ROOT)/utils/erase_box.sh gds/user_project_wrapper.gds 0 0 2920 3520
+### do the same for the empty wrapper
+	sh $(CARAVEL_ROOT)/utils/erase_box.sh $(CARAVEL_ROOT)/gds/user_project_wrapper_empty.gds 0 0 2920 3520
+	mkdir -p signoff/user_project_wrapper_xor
+### XOR the two resulting layouts
+	sh $(CARAVEL_ROOT)/utils/xor.sh \
+		$(CARAVEL_ROOT)/gds/user_project_wrapper_empty_erased.gds gds/user_project_wrapper_erased.gds \
+		user_project_wrapper user_project_wrapper.xor.xml
+	sh $(CARAVEL_ROOT)/utils/xor.sh \
+		$(CARAVEL_ROOT)/gds/user_project_wrapper_empty_erased.gds gds/user_project_wrapper_erased.gds \
+		user_project_wrapper gds/user_project_wrapper.xor.gds > signoff/user_project_wrapper_xor/xor.log 
+	rm $(CARAVEL_ROOT)/gds/user_project_wrapper_empty_erased.gds gds/user_project_wrapper_erased.gds
+	mv gds/user_project_wrapper.xor.gds gds/user_project_wrapper.xor.xml signoff/user_project_wrapper_xor
+	python $(CARAVEL_ROOT)/utils/parse_klayout_xor_log.py \
+		-l signoff/user_project_wrapper_xor/xor.log \
+		-o signoff/user_project_wrapper_xor/total.txt
+### screenshot the result for convenience
+	sh $(CARAVEL_ROOT)/utils/scrotLayout.sh \
+		$(PDK_ROOT)/sky130A/libs.tech/klayout/sky130A.lyt \
+		signoff/user_project_wrapper_xor/user_project_wrapper.xor.gds
+	@cat signoff/user_project_wrapper_xor/total.txt
+
+# Analog Wrapper
+# verify that the wrapper was respected
+xor-analog-wrapper: uncompress uncompress-caravel
+### first erase the user's user_project_wrapper.gds
+	sh $(CARAVEL_ROOT)/utils/erase_box.sh gds/user_analog_project_wrapper.gds 0 0 2920 3520 -8 -8 
+### do the same for the empty wrapper
+	sh $(CARAVEL_ROOT)/utils/erase_box.sh $(CARAVEL_ROOT)/gds/user_analog_project_wrapper_empty.gds 0 0 2920 3520 -8 -8 
+	mkdir -p signoff/user_analog_project_wrapper_xor
+### XOR the two resulting layouts
+	sh $(CARAVEL_ROOT)/utils/xor.sh \
+		$(CARAVEL_ROOT)/gds/user_analog_project_wrapper_empty_erased.gds gds/user_analog_project_wrapper_erased.gds \
+		user_analog_project_wrapper user_analog_project_wrapper.xor.xml
+	sh $(CARAVEL_ROOT)/utils/xor.sh \
+		$(CARAVEL_ROOT)/gds/user_analog_project_wrapper_empty_erased.gds gds/user_analog_project_wrapper_erased.gds \
+		user_analog_project_wrapper gds/user_analog_project_wrapper.xor.gds > signoff/user_analog_project_wrapper_xor/xor.log 
+	rm $(CARAVEL_ROOT)/gds/user_analog_project_wrapper_empty_erased.gds gds/user_analog_project_wrapper_erased.gds
+	mv gds/user_analog_project_wrapper.xor.gds gds/user_analog_project_wrapper.xor.xml signoff/user_analog_project_wrapper_xor
+	python $(CARAVEL_ROOT)/utils/parse_klayout_xor_log.py \
+		-l signoff/user_analog_project_wrapper_xor/xor.log \
+		-o signoff/user_analog_project_wrapper_xor/total.txt
+### screenshot the result for convenience
+	sh $(CARAVEL_ROOT)/utils/scrotLayout.sh \
+		$(PDK_ROOT)/sky130A/libs.tech/klayout/sky130A.lyt \
+		signoff/user_analog_project_wrapper_xor/user_analog_project_wrapper.xor.gds
+	@cat signoff/user_analog_project_wrapper_xor/total.txt
+
+# LVS
+BLOCKS = $(shell cd openlane && find * -maxdepth 0 -type d)
+LVS_BLOCKS = $(foreach block, $(BLOCKS), lvs-$(block))
+$(LVS_BLOCKS): lvs-% : ./mag/%.mag ./verilog/gl/%.v
+	echo "Extracting $*"
+	mkdir -p ./mag/tmp
+	echo "addpath $(CARAVEL_ROOT)/mag/hexdigits;\
+		addpath $(CARAVEL_ROOT)/subcells/simple_por/mag;\
+		addpath \$$PDKPATH/libs.ref/sky130_ml_xx_hd/mag;\
+		load $* -dereference;\
+		select top cell;\
+		foreach cell [cellname list children] {\
+			load \$$cell -dereference;\
+			property LEFview TRUE;\
+		};\
+		load $* -dereference;\
+		select top cell;\
+		extract no all;\
+		extract do local;\
+		extract unique;\
+		extract;\
+		ext2spice lvs;\
+		ext2spice $*.ext;\
+		feedback save extract_$*.log;\
+		exit;" > ./mag/extract_$*.tcl
+	cd mag && \
+		export MAGTYPE=maglef; \
+		magic -rcfile ${PDK_ROOT}/sky130A/libs.tech/magic/sky130A.magicrc -noc -dnull extract_$*.tcl < /dev/null
+	mv ./mag/$*.spice ./spi/lvs
+	rm ./mag/*.ext
+	mv -f ./mag/extract_$*.tcl ./mag/tmp
+	mv -f ./mag/extract_$*.log ./mag/tmp
+	####
+	mkdir -p ./spi/lvs/tmp
+	sh $(CARAVEL_ROOT)/spi/lvs/run_lvs.sh ./spi/lvs/$*.spice ./verilog/gl/$*.v $*
+	@echo ""
+	python3 $(CARAVEL_ROOT)/scripts/count_lvs.py -f ./verilog/gl/$*.v_comp.json | tee ./spi/lvs/tmp/$*.lvs.summary.log
+	mv -f ./verilog/gl/*.out ./spi/lvs/tmp 2> /dev/null || true
+	mv -f ./verilog/gl/*.json ./spi/lvs/tmp 2> /dev/null || true
+	mv -f ./verilog/gl/*.log ./spi/lvs/tmp 2> /dev/null || true
+	@echo ""
+	@echo "LVS: ./spi/lvs/$*.spice vs. ./verilog/gl/$*.v"
+	@echo "Comparison result: ./spi/lvs/tmp/$*.v_comp.out"
+	@awk '/^NET mismatches/,0' ./spi/lvs/tmp/$*.v_comp.out
+
+
+LVS_GDS_BLOCKS = $(foreach block, $(BLOCKS), lvs-gds-$(block))
+$(LVS_GDS_BLOCKS): lvs-gds-% : ./gds/%.gds ./verilog/gl/%.v
+	echo "Extracting $*"
+	mkdir -p ./gds/tmp
+	echo "gds read ./$*.gds;\
+		load $* -dereference;\
+		select top cell;\
+		extract no all;\
+		extract do local;\
+		extract unique;\
+		extract;\
+		ext2spice lvs;\
+		ext2spice $*.ext;\
+		feedback save extract_$*.log;\
+		exit;" > ./gds/extract_$*.tcl
+	cd gds && \
+		magic -rcfile ${PDK_ROOT}/sky130A/libs.tech/magic/sky130A.magicrc -noc -dnull extract_$*.tcl < /dev/null
+	mv ./gds/$*.spice ./spi/lvs
+	rm ./gds/*.ext
+	mv -f ./gds/extract_$*.tcl ./gds/tmp
+	mv -f ./gds/extract_$*.log ./gds/tmp
+	####
+	mkdir -p ./spi/lvs/tmp
+	MAGIC_EXT_USE_GDS=1 sh $(CARAVEL_ROOT)/spi/lvs/run_lvs.sh ./spi/lvs/$*.spice ./verilog/gl/$*.v $*
+	@echo ""
+	python3 $(CARAVEL_ROOT)/scripts/count_lvs.py -f ./verilog/gl/$*.v_comp.json | tee ./spi/lvs/tmp/$*.lvs.summary.log
+	mv -f ./verilog/gl/*.out ./spi/lvs/tmp 2> /dev/null || true
+	mv -f ./verilog/gl/*.json ./spi/lvs/tmp 2> /dev/null || true
+	mv -f ./verilog/gl/*.log ./spi/lvs/tmp 2> /dev/null || true
+	@echo ""
+	@echo "LVS: ./spi/lvs/$*.spice vs. ./verilog/gl/$*.v"
+	@echo "Comparison result: ./spi/lvs/tmp/$*.v_comp.out"
+	@awk '/^NET mismatches/,0' ./spi/lvs/tmp/$*.v_comp.out
+
+
+# connect-by-label is enabled here!
+LVS_MAGLEF_BLOCKS = $(foreach block, $(BLOCKS), lvs-maglef-$(block))
+$(LVS_MAGLEF_BLOCKS): lvs-maglef-% : ./mag/%.mag ./verilog/gl/%.v
+	echo "Extracting $*"
+	mkdir -p ./maglef/tmp
+	echo "load $* -dereference;\
+		select top cell;\
+		foreach cell [cellname list children] {\
+			load \$$cell -dereference;\
+			property LEFview TRUE;\
+		};\
+		load $* -dereference;\
+		select top cell;\
+		extract no all;\
+		extract do local;\
+		extract;\
+		ext2spice lvs;\
+		ext2spice $*.ext;\
+		feedback save extract_$*.log;\
+		exit;" > ./mag/extract_$*.tcl
+	cd mag && export MAGTYPE=maglef; magic -noc -dnull extract_$*.tcl < /dev/null
+	mv ./mag/$*.spice ./spi/lvs
+	rm ./maglef/*.ext
+	mv -f ./mag/extract_$*.tcl ./maglef/tmp
+	mv -f ./mag/extract_$*.log ./maglef/tmp
+	####
+	mkdir -p ./spi/lvs/tmp
+	sh $(CARAVEL_ROOT)/spi/lvs/run_lvs.sh ./spi/lvs/$*.spice ./verilog/gl/$*.v $*
+	@echo ""
+	python3 $(CARAVEL_ROOT)/scripts/count_lvs.py -f ./verilog/gl/$*.v_comp.json | tee ./spi/lvs/tmp/$*.maglef.lvs.summary.log
+	mv -f ./verilog/gl/*.out ./spi/lvs/tmp 2> /dev/null || true
+	mv -f ./verilog/gl/*.json ./spi/lvs/tmp 2> /dev/null || true
+	mv -f ./verilog/gl/*.log ./spi/lvs/tmp 2> /dev/null || true
+	@echo ""
+	@echo "LVS: ./spi/lvs/$*.spice vs. ./verilog/gl/$*.v"
+	@echo "Comparison result: ./spi/lvs/tmp/$*.v_comp.out"
+	@awk '/^NET mismatches/,0' ./spi/lvs/tmp/$*.v_comp.out
+
+# DRC
+BLOCKS = $(shell cd openlane && find * -maxdepth 0 -type d)
+DRC_BLOCKS = $(foreach block, $(BLOCKS), drc-$(block))
+$(DRC_BLOCKS): drc-% : ./gds/%.gds
+	echo "Running DRC on $*"
+	mkdir -p ./gds/tmp
+	cd gds && export DESIGN_IN_DRC=$* && export MAGTYPE=mag; magic -rcfile ${PDK_ROOT}/sky130A/libs.tech/magic/sky130A.magicrc -noc -dnull $(CARAVEL_ROOT)/gds/drc_on_gds.tcl < /dev/null
+	@echo "DRC result: ./gds/tmp/$*.drc"
+
+# Antenna
+BLOCKS = $(shell cd openlane && find * -maxdepth 0 -type d)
+ANTENNA_BLOCKS = $(foreach block, $(BLOCKS), antenna-$(block))
+$(ANTENNA_BLOCKS): antenna-% : ./gds/%.gds
+	echo "Running Antenna Checks on $*"
+	mkdir -p ./gds/tmp
+	cd gds && export DESIGN_IN_ANTENNA=$* && export MAGTYPE=mag; magic -rcfile ${PDK_ROOT}/sky130A/libs.tech/magic/sky130A.magicrc -noc -dnull $(CARAVEL_ROOT)/gds/antenna_on_gds.tcl < /dev/null 2>&1 | tee ./tmp/$*.antenna
+	mv -f ./gds/*.ext ./gds/tmp/
+	@echo "Antenna result: ./gds/tmp/$*.antenna"
+
+# MAG2GDS
+BLOCKS = $(shell cd openlane && find * -maxdepth 0 -type d)
+MAG_BLOCKS = $(foreach block, $(BLOCKS), mag2gds-$(block))
+$(MAG_BLOCKS): mag2gds-% : ./mag/%.mag uncompress
+	echo "Converting mag file $* to GDS..."
+	echo "addpath $(CARAVEL_ROOT)/mag/hexdigits;\
+		addpath ${PDKPATH}/libs.ref/sky130_ml_xx_hd/mag;\
+		addpath ${CARAVEL_ROOT}/subcells/simple_por/mag;\
+		drc off;\
+		gds rescale false;\
+		load $* -dereference;\
+		select top cell;\
+		expand;\
+		cif *hier write disable;\
+		gds write $*.gds;\
+		exit;" > ./mag/mag2gds_$*.tcl
+	cd ./mag && magic -rcfile ${PDK_ROOT}/sky130A/libs.tech/magic/sky130A.magicrc -noc -dnull mag2gds_$*.tcl < /dev/null
+	rm ./mag/mag2gds_$*.tcl
+	mv -f ./mag/$*.gds ./gds/
+	
+.PHONY: help
+help:
+	@$(MAKE) -pRrq -f $(lastword $(MAKEFILE_LIST)) : 2>/dev/null | awk -v RS= -F: '/^# File/,/^# Finished Make data base/ {if ($$1 !~ "^[#.]") {print $$1}}' | sort | egrep -v -e '^[^[:alnum:]]' -e '^$@$$'
+
+# RCX Extraction
+BLOCKS = $(shell cd openlane && find * -maxdepth 0 -type d)
+RCX_BLOCKS = $(foreach block, $(BLOCKS), rcx-$(block))
+OPENLANE_IMAGE_NAME=efabless/openlane:2021.09.16_03.28.21
+$(RCX_BLOCKS): rcx-% : ./def/%.def 
+	echo "Running RC Extraction on $*"
+	mkdir -p ./def/tmp 
+	# merge techlef and standard cell lef files
+	python3 $(OPENLANE_ROOT)/scripts/mergeLef.py -i $(PDK_ROOT)/sky130A/libs.ref/$(STD_CELL_LIBRARY)/techlef/$(STD_CELL_LIBRARY).tlef $(PDK_ROOT)/sky130A/libs.ref/$(STD_CELL_LIBRARY)/lef/*.lef -o ./def/tmp/merged.lef
+	echo "\
+		read_liberty $(PDK_ROOT)/sky130A/libs.ref/$(STD_CELL_LIBRARY)/lib/$(STD_CELL_LIBRARY)__tt_025C_1v80.lib;\
+		read_liberty $(PDK_ROOT)/sky130A/libs.ref/$(SPECIAL_VOLTAGE_LIBRARY)/lib/$(SPECIAL_VOLTAGE_LIBRARY)__tt_025C_3v30.lib;\
+		set std_cell_lef ./def/tmp/merged.lef;\
+		if {[catch {read_lef \$$std_cell_lef} errmsg]} {\
+    			puts stderr \$$errmsg;\
+    			exit 1;\
+		};\
+		foreach lef_file [glob ./lef/*.lef] {\
+			if {[catch {read_lef \$$lef_file} errmsg]} {\
+    			puts stderr \$$errmsg;\
+    			exit 1;\
+			}\
+		};\
+		if {[catch {read_def -order_wires ./def/$*.def} errmsg]} {\
+			puts stderr \$$errmsg;\
+			exit 1;\
+		};\
+		read_sdc ./openlane/$*/base.sdc;\
+		set_propagated_clock [all_clocks];\
+		set rc_values \"mcon 9.249146E-3,via 4.5E-3,via2 3.368786E-3,via3 0.376635E-3,via4 0.00580E-3\";\
+		set vias_rc [split \$$rc_values ","];\
+    	foreach via_rc \$$vias_rc {\
+        		set layer_name [lindex \$$via_rc 0];\
+        		set resistance [lindex \$$via_rc 1];\
+       			set_layer_rc -via \$$layer_name -resistance \$$resistance;\
+    	};\
+		set_wire_rc -signal -layer met2;\
+		set_wire_rc -clock -layer met5;\
+		define_process_corner -ext_model_index 0 X;\
+		extract_parasitics -ext_model_file ${PDK_ROOT}/sky130A/libs.tech/openlane/rcx_rules.info -corner_cnt 1 -max_res 50 -coupling_threshold 0.1 -cc_model 10 -context_depth 5;\
+		write_spef ./def/tmp/$*.spef" > ./def/tmp/or_rcx_$*.tcl
+## Generate Spef file
+	docker run -it -v $(OPENLANE_ROOT):/openLANE_flow -v $(PDK_ROOT):$(PDK_ROOT) -v $(PWD):/caravel -e PDK_ROOT=$(PDK_ROOT) -u $(shell id -u $(USER)):$(shell id -g $(USER)) $(OPENLANE_IMAGE_NAME) \
+	sh -c " cd /caravel; openroad -exit ./def/tmp/or_rcx_$*.tcl |& tee ./def/tmp/or_rcx_$*.log" 
+## Run OpenSTA
+	echo "\
+		set std_cell_lef ./def/tmp/merged.lef;\
+		if {[catch {read_lef \$$std_cell_lef} errmsg]} {\
+    			puts stderr \$$errmsg;\
+    			exit 1;\
+		};\
+		foreach lef_file [glob ./lef/*.lef] {\
+			if {[catch {read_lef \$$lef_file} errmsg]} {\
+    			puts stderr \$$errmsg;\
+    			exit 1;\
+			}\
+		};\
+		set_cmd_units -time ns -capacitance pF -current mA -voltage V -resistance kOhm -distance um;\
+		read_liberty -min ${PDK_ROOT}/sky130A/libs.ref/${STD_CELL_LIBRARY}/lib/${STD_CELL_LIBRARY}__ff_n40C_1v95.lib;\
+		read_liberty -max ${PDK_ROOT}/sky130A/libs.ref/${STD_CELL_LIBRARY}/lib/${STD_CELL_LIBRARY}__ss_100C_1v60.lib;\
+		read_verilog ./verilog/gl/$*.v;\
+		link_design $*;\
+		read_spef ./def/tmp/$*.spef;\
+		read_sdc -echo ./openlane/$*/base.sdc;\
+		report_checks -fields {capacitance slew input_pins nets fanout} -path_delay min_max;\
+		" > ./def/tmp/or_sta_$*.tcl 
+	docker run -it -v $(OPENLANE_ROOT):/openLANE_flow -v $(PDK_ROOT):$(PDK_ROOT) -v $(PWD):/caravel -e PDK_ROOT=$(PDK_ROOT) -u $(shell id -u $(USER)):$(shell id -g $(USER)) $(OPENLANE_IMAGE_NAME) \
+	sh -c "cd /caravel; openroad -exit ./def/tmp/or_sta_$*.tcl |& tee ./def/tmp/or_sta_$*.log" 
+
+###########################################################################
+.PHONY: generate_fill
+generate_fill: check-env check-uid check-project uncompress
+ifeq ($(FOREGROUND),1)
+	@echo "Running generate_fill in the foreground..."
+	$(MAKE) -f $(CARAVEL_ROOT)/Makefile __generate_fill
+	@echo "Generate fill completed." 2>&1 | tee -a ./signoff/build/generate_fill.out
+else
+	@echo "Running generate_fill in the background..."
+	@nohup $(MAKE) -f $(CARAVEL_ROOT)/Makefile __generate_fill >/dev/null 2>&1 &
+	tail -f signoff/build/generate_fill.out
+	@echo "Generate fill completed." | tee -a signoff/build/generate_fill.out
+endif
+
+__generate_fill:
+	@mkdir -p ./signoff/build
+	@cp -r $(CARAVEL_ROOT)/mag/.magicrc $(shell pwd)/mag
+	python3 $(CARAVEL_ROOT)/scripts/generate_fill.py $(USER_ID) $(PROJECT) $(shell pwd) -dist 2>&1 | tee ./signoff/build/generate_fill.out
+	#python3 $(CARAVEL_ROOT)/scripts/generate_fill.py $(USER_ID) $(PROJECT) $(shell pwd) -keep 2>&1 | tee ./signoff/build/generate_fill.out
+
+
+.PHONY: final
+final: check-env check-uid check-project uncompress uncompress-caravel
+ifeq ($(FOREGROUND),1)
+	$(MAKE) -f $(CARAVEL_ROOT)/Makefile __final
+	@echo "Final build completed." 2>&1 | tee -a ./signoff/build/final_build.out
+else
+	$(MAKE) -f $(CARAVEL_ROOT)/Makefile __final >/dev/null 2>&1 &
+	tail -f signoff/build/final_build.out
+	@echo "Final build completed." 2>&1 | tee -a ./signoff/build/final_build.out
+endif
+
+__final:
+	python3 $(CARAVEL_ROOT)/scripts/compositor.py $(USER_ID) $(PROJECT) $(shell pwd) $(CARAVEL_ROOT)/mag $(shell pwd)/gds -keep
+	#mv $(CARAVEL_ROOT)/mag/caravel_$(USER_ID).mag ./mag/
+	@rm -rf ./mag/tmp
+
+.PHONY: set_user_id
+set_user_id: check-env check-uid uncompress uncompress-caravel
+ifeq ($(FOREGROUND),1)
+	$(MAKE) -f $(CARAVEL_ROOT)/Makefile __set_user_id
+	@echo "Set user ID completed." 2>&1 | tee -a ./signoff/build/set_user_id.out
+else
+	$(MAKE) -f $(CARAVEL_ROOT)/Makefile __set_user_id >/dev/null 2>&1 &
+	tail -f signoff/build/set_user_id.out
+	@echo "Set user ID completed." 2>&1 | tee -a ./signoff/build/set_user_id.out
+endif
+
+__set_user_id: 
+	mkdir -p ./signoff/build
+	# Update info.yaml
+	# sed -r "s/^(\s*project_id\s*:\s*).*/\1${USER_ID}/" -i info.yaml
+	cp $(CARAVEL_ROOT)/gds/user_id_programming.gds ./gds/user_id_programming.gds
+	cp $(CARAVEL_ROOT)/mag/user_id_programming.mag ./mag/user_id_programming.mag
+	cp $(CARAVEL_ROOT)/mag/user_id_textblock.mag ./mag/user_id_textblock.mag
+	cp $(CARAVEL_ROOT)/verilog/rtl/caravel.v ./verilog/rtl/caravel.v
+	python3 $(CARAVEL_ROOT)/scripts/set_user_id.py $(USER_ID) $(shell pwd) 2>&1 | tee ./signoff/build/set_user_id.out
+
+.PHONY: update_caravel
+update_caravel:
+	cd caravel/ && \
+		git checkout master && \
+		git pull
+
+###########################################################################
+.PHONY: pdk
+pdk: skywater-pdk skywater-library skywater-timing open_pdks build-pdk gen-sources
+
+$(PDK_ROOT)/skywater-pdk:
+	git clone https://github.com/google/skywater-pdk.git $(PDK_ROOT)/skywater-pdk
+
+.PHONY: skywater-pdk
+skywater-pdk: check-env $(PDK_ROOT)/skywater-pdk
+	cd $(PDK_ROOT)/skywater-pdk && \
+		git checkout main && git pull && \
+		git checkout -qf $(SKYWATER_COMMIT)
+
+.PHONY: skywater-library
+skywater-library: check-env $(PDK_ROOT)/skywater-pdk
+	cd $(PDK_ROOT)/skywater-pdk && \
+		git submodule update --init libraries/$(STD_CELL_LIBRARY)/latest && \
+		git submodule update --init libraries/$(IO_LIBRARY)/latest && \
+		git submodule update --init libraries/$(SPECIAL_VOLTAGE_LIBRARY)/latest && \
+		git submodule update --init libraries/$(PRIMITIVES_LIBRARY)/latest
+
+gen-sources: $(PDK_ROOT)/sky130A
+	touch $(PDK_ROOT)/sky130A/SOURCES
+	echo -ne "skywater-pdk " >> $(PDK_ROOT)/sky130A/SOURCES
+	cd $(PDK_ROOT)/skywater-pdk && git rev-parse HEAD >> $(PDK_ROOT)/sky130A/SOURCES
+	echo -ne "open_pdks " >> $(PDK_ROOT)/sky130A/SOURCES
+	cd $(PDK_ROOT)/open_pdks && git rev-parse HEAD >> $(PDK_ROOT)/sky130A/SOURCES
+
+skywater-timing: check-env $(PDK_ROOT)/skywater-pdk
+	cd $(PDK_ROOT)/skywater-pdk && \
+		$(MAKE) timing
+### OPEN_PDKS
+$(PDK_ROOT)/open_pdks:
+	git clone git://opencircuitdesign.com/open_pdks $(PDK_ROOT)/open_pdks
+
+.PHONY: open_pdks
+open_pdks: check-env $(PDK_ROOT)/open_pdks
+	cd $(PDK_ROOT)/open_pdks && \
+		git checkout master && git pull && \
+		git checkout -qf $(OPEN_PDKS_COMMIT)
+
+.PHONY: build-pdk
+build-pdk: check-env $(PDK_ROOT)/open_pdks $(PDK_ROOT)/skywater-pdk
+	[ -d $(PDK_ROOT)/sky130A ] && \
+		(echo "Warning: A sky130A build already exists under $(PDK_ROOT). It will be deleted first!" && \
+		sleep 5 && \
+		rm -rf $(PDK_ROOT)/sky130A) || \
+		true
+	cd $(PDK_ROOT)/open_pdks && \
+		./configure --enable-sky130-pdk=$(PDK_ROOT)/skywater-pdk/libraries --with-sky130-local-path=$(PDK_ROOT) --enable-sram-sky130=$(INSTALL_SRAM) && \
+		cd sky130 && \
+		$(MAKE) veryclean && \
+		$(MAKE) && \
+		make SHARED_PDKS_PATH=$(PDK_ROOT) install && \
+		$(MAKE) clean
+
+.RECIPE: manifest
+manifest: mag/ maglef/ verilog/rtl/ Makefile
+	touch manifest && \
+	find verilog/rtl/* -type f ! -name "caravel_netlists.v" ! -name "user_*.v" ! -name "README" ! -name "defines.v" -exec shasum {} \; > manifest && \
+	shasum scripts/set_user_id.py scripts/generate_fill.py scripts/compositor.py >> manifest
+# shasum lef/user_project_wrapper_empty.lef >> manifest
+# find maglef/*.mag -type f ! -name "user_project_wrapper.mag" -exec shasum {} \; >> manifest && \
+# shasum mag/caravel.mag mag/.magicrc >> manifest
+
+.RECIPE: master_manifest
+master_manifest:
+	find verilog/rtl/* -type f -exec shasum {} \; > master_manifest && \
+	find verilog/gl/* -type f -exec shasum {} \; >> master_manifest && \
+	shasum scripts/set_user_id.py scripts/generate_fill.py scripts/compositor.py >> master_manifest && \
+	find lef/*.lef -type f -exec shasum {} \; >> master_manifest && \
+	find def/*.def -type f -exec shasum {} \; >> master_manifest && \
+	find mag/*.mag -type f  -exec shasum {} \; >> master_manifest && \
+	find maglef/*.mag -type f -exec shasum {} \; >> master_manifest && \
+	find spi/lvs/*.spice -type f -exec shasum {} \; >> master_manifest && \
+	find gds/*.gds -type f -exec shasum {} \; >> master_manifest 
+	
+check-env:
+ifndef PDK_ROOT
+	$(error PDK_ROOT is undefined, please export it before running make)
+endif
+
+check-uid:
+ifndef USER_ID
+	$(error USER_ID is undefined, please export it before running make set_user_id)
+else 
+	@echo USER_ID is set to $(USER_ID)
+endif
+
+check-project:
+ifndef PROJECT
+	$(error PROJECT is undefined, please export it before running make generate_fill or make final)
+else
+	@echo PROJECT is set to $(PROJECT)
+endif
+
+# Make README.rst
+README.rst: README.src.rst docs/source/getting-started.rst docs/source/tool-versioning.rst openlane/README.src.rst docs/source/caravel-with-openlane.rst Makefile
+	pip -q install rst_include && \
+	rm -f README.rst && \
+		rst_include include README.src.rst - | \
+			sed \
+				-e's@\.\/\_static@\/docs\/source\/\_static@g' \
+				-e's@:doc:`tool-versioning`@`tool-versioning.rst <./docs/source/tool-versioning.rst>`__@g' \
+				-e's@.. note::@**NOTE:**@g' \
+				-e's@.. warning::@**WARNING:**@g' \
+				> README.rst && \
+		rst_include include openlane/README.src.rst - | \
+			sed \
+				-e's@https://github.com/efabless/caravel/blob/master/verilog@../verilog@g' \
+				-e's@:ref:`getting-started`@`README.rst <../README.rst>`__@g' \
+				-e's@https://github.com/efabless/caravel/blob/master/openlane/@./@g' \
+				-e's@.. note::@**NOTE:**@g' \
+				-e's@.. warning::@**WARNING:**@g' \
+				> openlane/README.rst
diff --git a/caravel/info.yaml b/caravel/info.yaml
new file mode 100644
index 0000000..16388ef
--- /dev/null
+++ b/caravel/info.yaml
@@ -0,0 +1,19 @@
+--- 
+project: 
+  description: "A template SoC for Google sponsored Open MPW shuttles for SKY130."
+  foundry: "SkyWater"
+  git_url: "https://github.com/efabless/caravel.git"
+  organization: "Efabless"
+  organization_url: "http://efabless.com"
+  owner: "Tim Edwards"
+  process: "SKY130"
+  project_name: "Caravel"
+  project_id: "00000000"
+  tags: 
+    - "Open MPW"
+    - "Test Harness"
+  category: "Test Harness"
+  top_level_netlist: "verilog/gl/caravel.v"
+  user_level_netlist: "verilog/gl/user_project_wrapper.v"
+  version: "1.00"
+  cover_image: "docs/source/_static/caravel_harness.png"
diff --git a/caravel/manifest b/caravel/manifest
new file mode 100644
index 0000000..3e2ffa7
--- /dev/null
+++ b/caravel/manifest
@@ -0,0 +1,48 @@
+0ca19fc3c20b483c8691ba25ed131648e6c194d3  verilog/rtl/DFFRAM.v
+216d603c97eb28f4e8957e534116c0caa5711bbd  verilog/rtl/DFFRAMBB.v
+535d0592c0b1349489b6b86fd5449f9d1d81482e  verilog/rtl/__uprj_analog_netlists.v
+87735eb5981740ca4d4b48e6b0321c8bb0023800  verilog/rtl/__uprj_netlists.v
+684085713662e37a26f9f981d35be7c6c7ff6e9a  verilog/rtl/__user_analog_project_wrapper.v
+b5ad3558a91e508fad154b91565c7d664b247020  verilog/rtl/__user_project_wrapper.v
+7c25df2bd392893aa5b6fb0074332ea605ac3ed7  verilog/rtl/caravan.v
+e7d48588820f78c23284f663e99def4e43e59af3  verilog/rtl/caravan_netlists.v
+8623f6eace1f0d16dea0f1dfcc6357ddb7657781  verilog/rtl/caravel.v
+b2feeb2a098894d5d731a5b011858a471e855d73  verilog/rtl/caravel_clocking.v
+b707ae2325692f0441dfcd27272a9ad8611771bd  verilog/rtl/chip_io.v
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