120 lines
3.4 KiB
Makefile
120 lines
3.4 KiB
Makefile
######################################################################
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#
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# DESCRIPTION: Verilator Example: Small Makefile
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#
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# This calls the object directory makefile. That allows the objects to
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# be placed in the "current directory" which simplifies the Makefile.
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#
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# This file ONLY is placed under the Creative Commons Public Domain, for
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# any use, without warranty, 2020 by Wilson Snyder.
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# SPDX-License-Identifier: CC0-1.0
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#
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######################################################################
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# Check for sanity to avoid later confusion
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ifneq ($(words $(CURDIR)),1)
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$(error Unsupported: GNU Make cannot build in directories containing spaces, build elsewhere: '$(CURDIR)')
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endif
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######################################################################
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# Set up variables
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# If $VERILATOR_ROOT isn't in the environment, we assume it is part of a
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# package install, and verilator is in your path. Otherwise find the
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# binary relative to $VERILATOR_ROOT (such as when inside the git sources).
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ifeq ($(VERILATOR_ROOT),)
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VERILATOR = verilator
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VERILATOR_COVERAGE = verilator_coverage
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else
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export VERILATOR_ROOT
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VERILATOR = $(VERILATOR_ROOT)/bin/verilator
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VERILATOR_COVERAGE = $(VERILATOR_ROOT)/bin/verilator_coverage
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endif
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VERILATOR_FLAGS =
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# Generate SystemC in executable form
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VERILATOR_FLAGS += -sc --exe
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# Generate makefile dependencies (not shown as complicates the Makefile)
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#VERILATOR_FLAGS += -MMD
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# Optimize
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# VERILATOR_FLAGS += -x-assign fast
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# Warn abount lint issues; may not want this on less solid designs
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VERILATOR_FLAGS += -Wall
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# Make waveforms
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VERILATOR_FLAGS += --trace
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# Check SystemVerilog assertions
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VERILATOR_FLAGS += --assert
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# Generate coverage analysis
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# VERILATOR_FLAGS += --coverage
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# Run Verilator in debug mode
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#VERILATOR_FLAGS += --debug
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# Add this trace to get a backtrace in gdb
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#VERILATOR_FLAGS += --gdbbt
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# Specify top module
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TOP_MODULE = demosaic2
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VERILATOR_FLAGS += -top $(TOP_MODULE)
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# Input files for Verilator
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VERILATOR_INPUT = ../demosaic2.v sc_demosaic.cpp
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# Check if SC exists via a verilator call (empty if not)
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SYSTEMC_EXISTS := $(shell $(VERILATOR) --get-supported SYSTEMC)
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######################################################################
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ifneq ($(SYSTEMC_EXISTS),)
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default: run
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else
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default: nosc
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endif
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run:
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@echo
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@echo "-- Verilator tracing example"
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@echo
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@echo "-- VERILATE ----------------"
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$(VERILATOR) $(VERILATOR_FLAGS) $(VERILATOR_INPUT)
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@echo
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@echo "-- COMPILE -----------------"
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# To compile, we can either
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# 1. Pass --build to Verilator by editing VERILATOR_FLAGS above.
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# 2. Or, run the make rules Verilator does:
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# $(MAKE) -j -C obj_dir -f Vtop.mk
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# 3. Or, call a submakefile where we can override the rules ourselves:
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$(MAKE) -j -C obj_dir -f V$(TOP_MODULE).mk
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@echo
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@echo "-- RUN ---------------------"
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@rm -rf logs
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@mkdir -p logs
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obj_dir/Vtop +trace
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@echo
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@echo "-- COVERAGE ----------------"
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@rm -rf logs/annotated
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$(VERILATOR_COVERAGE) --annotate logs/annotated logs/coverage.dat
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@echo
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@echo "-- DONE --------------------"
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@echo "To see waveforms, open vlt_dump.vcd in a waveform viewer"
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@echo
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######################################################################
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# Other targets
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nosc:
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@echo
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@echo "%Skip: SYSTEMC_INCLUDE not in environment"
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@echo "(If you have SystemC see the README, and rebuild Verilator)"
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@echo
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show-config:
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$(VERILATOR) -V
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maintainer-copy::
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clean mostlyclean distclean maintainer-clean::
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-rm -rf obj_dir logs *.log *.dmp *.vpd coverage.dat core
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