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######################################################################
####                                                              ####
####  ORPSoCv2 Testbenches Makefile                               ####
####                                                              ####
####  Description                                                 ####
####  ORPSoCv2 Testbenches Makefile, containing rules for         ####
####  configuring and running different tests on the current      ####
####  ORPSoC(v2) design.                                          ####
####                                                              ####
####  To do:                                                      ####
####                                                              ####
####  Author(s):                                                  ####
####      - Julius Baxter, julius@opencores.org                   ####
####                                                              ####
####                                                              ####
######################################################################
####                                                              ####
#### Copyright (C) 2009,2010 Authors and OPENCORES.ORG            ####
####                                                              ####
#### This source file may be used and distributed without         ####
#### restriction provided that this copyright statement is not    ####
#### removed from the file and that any derivative work contains  ####
#### the original copyright notice and the associated disclaimer. ####
####                                                              ####
#### This source file is free software; you can redistribute it   ####
#### and/or modify it under the terms of the GNU Lesser General   ####
#### Public License as published by the Free Software Foundation; ####
#### either version 2.1 of the License, or (at your option) any   ####
#### later version.                                               ####
####                                                              ####
#### This source 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 Lesser General Public License for more ####
#### details.                                                     ####
####                                                              ####
#### You should have received a copy of the GNU Lesser General    ####
#### Public License along with this source; if not, download it   ####
#### from http://www.opencores.org/lgpl.shtml                     ####
####                                                              ####
######################################################################

# Name of the directory we're currently in
CUR_DIR=$(shell pwd)

# The root path of the whole project
PROJECT_ROOT ?=$(CUR_DIR)/../..

DESIGN_NAME=orpsoc
RTL_TESTBENCH_TOP=$(DESIGN_NAME)_testbench
# Top level files for DUT and testbench
DUT_TOP=$(RTL_VERILOG_DIR)/$(DESIGN_NAME)_top/$(DESIGN_NAME)_top.v
BENCH_TOP=$(BENCH_VERILOG_DIR)/$(DESIGN_NAME)_testbench.v

# Need this for individual test variables to not break
TEST ?= or1200-simple

TESTS ?= or1200-simple or1200-basic or1200-cbasic or1200-dctest or1200-float or1200-mmu  or1200-except or1200-mac or1200-linkregtest or1200-tick or1200-ticksyscall uart-simple

# Gets turned into verilog `define
SIM_TYPE=RTL

# Paths to other important parts of this test suite
RTL_DIR = $(PROJECT_ROOT)/rtl
RTL_VERILOG_DIR = $(RTL_DIR)/verilog
RTL_VERILOG_INCLUDE_DIR = $(RTL_VERILOG_DIR)/include
#RTL_VHDL_DIR = $(RTL_DIR)/vhdl

PROJECT_VERILOG_DEFINES=$(RTL_VERILOG_INCLUDE_DIR)/$(DESIGN_NAME)-defines.v
# Detect technology to use for the simulation
DESIGN_DEFINES=$(shell cat $(PROJECT_VERILOG_DEFINES) | sed s://.*::g | sed s:\`:\#:g | sed 's:^[ ]*::' | awk '{print};/^\#define/{printf "_%s=%s\n",$$2,$$2}' | grep -v PERIOD | cpp -P | sed s:^_::g | sed s:=$$::g )

# Rule to look at what defines are being extracted from main file
print-defines:
        @echo echo; echo "\t### Design defines ###"; echo
        @echo "\tParsing "$(PROJECT_VERILOG_DEFINES)" and exporting:"
        @echo $(DESIGN_DEFINES)

# Simulation directories
SIM_DIR ?=$(PROJECT_ROOT)/sim
SIM_VLT_DIR ?=$(SIM_DIR)/vlt
RTL_SIM_DIR=$(SIM_DIR)
RTL_SIM_RUN_DIR=$(RTL_SIM_DIR)/run
RTL_SIM_BIN_DIR=$(RTL_SIM_DIR)/bin
RTL_SIM_SRC_DIR=$(RTL_SIM_DIR)/src
RTL_SIM_RESULTS_DIR=$(RTL_SIM_DIR)/out

# Testbench paths
BENCH_DIR=$(PROJECT_ROOT)/bench
BENCH_VERILOG_DIR=$(BENCH_DIR)/verilog
#BENCH_VHDL_DIR=$(BENCH_DIR)/vhdl
BENCH_SYSC_DIR=$(BENCH_DIR)/sysc
BENCH_SYSC_SRC_DIR=$(BENCH_SYSC_DIR)/src
BENCH_SYSC_INCLUDE_DIR=$(BENCH_SYSC_DIR)/include


# System software dir
SW_DIR=$(PROJECT_ROOT)/sw
# BootROM code, which generates a verilog array select values
BOOTROM_FILE=bootrom.v
BOOTROM_SW_DIR=$(SW_DIR)/bootrom
BOOTROM_SRC=$(shell ls $(BOOTROM_SW_DIR)/* | grep -v $(BOOTROM_FILE))
BOOTROM_VERILOG=$(BOOTROM_SW_DIR)/$(BOOTROM_FILE)
$(BOOTROM_VERILOG): $(BOOTROM_SRC)
        $(Q)echo; echo "\t### Generating bootup ROM ###"; echo
        $(Q)$(MAKE) -C $(BOOTROM_SW_DIR) $(BOOTROM_FILE)

# Suffix of file to check after each test for the string
TEST_OUT_FILE_SUFFIX=-general.log
TEST_OK_STRING=8000000d

# Dynamically generated verilog file defining configuration for various things
TEST_DEFINES_VLG=test-defines.v
# Set V=1 when calling make to enable verbose output
# mainly for debugging purposes.
ifeq ($(V), 1)
Q=
QUIET=
else
Q ?=@
QUIET=-quiet
endif

# Modelsim variables
MGC_VSIM=vsim
MGC_VLOG_COMP=vlog
MGC_VHDL_COMP=vcom
MODELSIM=modelsim

# Icarus variables
ICARUS_COMPILE=iverilog
ICARUS_RUN=vvp
ICARUS_SCRIPT=icarus.scr
ICARUS_SIM_EXE=vlogsim.elf
ICARUS=icarus

#Default simulator is Icarus Verilog
# Set SIMULATOR=modelsim to use Modelsim
# Set SIMULATOR=ncverilog to use Cadence's NC-Verilog - TODO
# Set SIMULATOR=icarus to use Icarus Verilog (Default)

SIMULATOR ?= $(ICARUS)

# VPI debugging interface variables
VPI_SRC_C_DIR=$(BENCH_VERILOG_DIR)/vpi/c
VPI_SRC_VERILOG_DIR=$(BENCH_VERILOG_DIR)/vpi/verilog
VPI_SRCS=$(shell ls $(VPI_SRC_C_DIR)/*.[ch])

# Modelsim VPI compile variables
MODELTECH_VPILIB=msim_jp_vpi.sl
# Icarus VPI compile target
ICARUS_VPILIB=jp_vpi

#
# Modelsim-specific settings
#
VOPT_ARGS=$(QUIET) -suppress 2241
# If VCD dump is desired, tell Modelsim not to optimise
# away everything.
ifeq ($(VCD), 1)
#VOPT_ARGS=-voptargs="+acc=rnp"
VOPT_ARGS=+acc=rnpqv
endif
# VSIM commands
# Suppressed warnings - 3009: Failed to open $readmemh() file
# Suppressed warnings - 3009: Module 'blah' does not have a `timescale directive in effect, but previous modules do.
# Suppressed warnings - 8598: Non-positive replication multiplier inside concat. Replication will be ignored
MGC_VSIM_ARGS=  -suppress 7 -suppress 3009 -suppress 8598 -c $(QUIET) -do "set StdArithNoWarnings 1; run -all; exit"
# Options required when VPI option used
ifeq ($(VPI), 1)
MGC_VPI_LIB=$(VPI_SRC_C_DIR)/$(MODELTECH_VPILIB)
MGC_VSIM_ARGS += -pli $(VPI_SRC_C_DIR)/$(MODELTECH_VPILIB)

ICARUS_VPI_LIB=$(VPI_SRC_C_DIR)/$(ICARUS_VPILIB)
ICARUS_VPI_ARGS=-M$(VPI_SRC_C_DIR) -m$(ICARUS_VPILIB)
endif
# Rule to make the VPI library for Modelsim
$(MGC_VPI_LIB): $(VPI_SRCS)
        $(MAKE) -C $(VPI_SRC_C_DIR) $(MODELTECH_VPILIB)

# Rule to make VPI library for Icarus Verilog
$(ICARUS_VPI_LIB): $(VPI_SRCS)
        $(MAKE) -C $(VPI_SRC_C_DIR) $(ICARUS_VPILIB)

# Manually add the VPI bench verilog path
BENCH_VERILOG_SRC_SUBDIRS += $(VPI_SRC_VERILOG_DIR)

#
# Verilog DUT source variables
#
# A list of paths under rtl/verilog we wish to exclude for module searching
VERILOG_MODULES_EXCLUDE=  include components
VERILOG_MODULES_EXCLUDE_LIST_E=$(shell for exclude in $(VERILOG_MODULES_EXCLUDE); do echo "-e $$exclude"; done)
RTL_VERILOG_MODULES=$(shell ls $(RTL_VERILOG_DIR) | grep -v $(VERILOG_MODULES_EXCLUDE_LIST_E) )
# Specific files to exclude, currently none.
#VERILOG_EXCLUDE=
#VERILOG_EXCLUDE_LIST_E=$(shell for exclude in $(VERILOG_EXCLUDE); do echo "-e $$exclude"; done)
# List of verilog source files, minus excluded files
#RTL_VERILOG_SRC=$(shell for module in $(RTL_VERILOG_MODULES); do if [ -d $(RTL_VERILOG_DIR)/$$module ]; then ls $(RTL_VERILOG_DIR)/$$module/*.v | grep -v $(VERILOG_EXCLUDE_LIST_E); fi; done)
# List of verilog source files, ignoring excludes
RTL_VERILOG_SRC=$(shell for module in $(RTL_VERILOG_MODULES); do if [ -d $(RTL_VERILOG_DIR)/$$module ]; then ls $(RTL_VERILOG_DIR)/$$module/*.v; fi; done)

# List of verilog includes
RTL_VERILOG_INCLUDES=$(shell ls $(RTL_VERILOG_INCLUDE_DIR)/*.*)

print-verilog-src:
        @echo echo; echo "\t### Verilog source ###"; echo
        @echo $(RTL_VERILOG_SRC)

# Rules to make RTL we might need
# Expects modules, if they need making, to have their top verilog file to
# correspond to their module name, and the directory should have a make file
# and rule which works for this command.
# Add name of module to this list, currently only does verilog ones.
# Rule 'rtl' is called just before generating DUT modelsim compilation script
RTL_TO_CHECK=
rtl:
        $(Q)for module in $(RTL_TO_CHECK); do \
                $(MAKE) -C $(RTL_VERILOG_DIR)/$$module $$module.v; \
        done

#
# VHDL DUT source variables
#
# VHDL modules
#RTL_VHDL_MODULES=$(shell ls $(RTL_VHDL_DIR))
# VHDL sources
#RTL_VHDL_SRC=$(shell for module in $(RTL_VHDL_MODULES); do if [ -d $(RTL_VHDL_DIR)/$$module ]; then ls $(RTL_VHDL_DIR)/$$module/*.vhd; fi; done)
#print-vhdl-src:
#       @echo echo; echo "\t### VHDL modules and source ###"; echo
#       @echo "modules: "; echo $(RTL_VHDL_MODULES); echo
#       @echo "source: "$(RTL_VHDL_SRC)


# Testbench verilog source
BENCH_VERILOG_SRC=$(shell ls $(BENCH_VERILOG_DIR)/*.v | grep -v $(DESIGN_NAME)_testbench )

print-bench-src:
        $(Q)echo "\tBench verilog source"; \
        echo $(BENCH_VERILOG_SRC)

# Testbench source subdirectory detection
BENCH_VERILOG_SRC_SUBDIRS +=$(shell for file in `ls $(BENCH_VERILOG_DIR)`; do if [ -d $(BENCH_VERILOG_DIR)/$$file ]; then echo $(BENCH_VERILOG_DIR)/$$file; fi; done)

# Compile script generation rules:

modelsim_dut.scr: rtl $(RTL_VERILOG_SRC) $(RTL_VERILOG_INCLUDES) $(BOOTROM_VERILOG)
        $(Q)echo "+incdir+"$(RTL_VERILOG_INCLUDE_DIR) > $@;
        $(Q)echo "+incdir+"$(RTL_SIM_SRC_DIR) >> $@;
        $(Q)echo "+incdir+"$(BOOTROM_SW_DIR) >> $@;
        $(Q)echo "+incdir+"$(BENCH_VERILOG_DIR) >> $@;
        $(Q)echo "+libext+.v" >> $@;
        $(Q)for module in $(RTL_VERILOG_MODULES); do if [ -d $(RTL_VERILOG_DIR)/$$module ]; then echo "-y " $(RTL_VERILOG_DIR)/$$module >> $@; fi; done
        $(Q)echo >> $@

modelsim_bench.scr: $(BENCH_VERILOG_SRC)
        $(Q)echo "+incdir+"$(BENCH_VERILOG_DIR) > $@;
        $(Q)for path in $(BENCH_VERILOG_SRC_SUBDIRS); do echo "+incdir+"$$path >> $@; done
        $(Q)for path in $(BENCH_VERILOG_SRC_SUBDIRS); do echo "-y "$$path >> $@; done
        $(Q)echo "+incdir+"$(RTL_VERILOG_INCLUDE_DIR) >> $@;
        $(Q)echo "+incdir+"$(RTL_SIM_SRC_DIR) >> $@;
        $(Q)echo "+libext+.v" >> $@;
        $(Q)echo "-y" $(RTL_SIM_SRC_DIR) >> $@;
        $(Q)for vsrc in $(BENCH_VERILOG_SRC); do echo $$vsrc >> $@; done
        $(Q)echo >> $@

# Compile DUT into "work" library
work: modelsim_dut.scr #$(RTL_VHDL_SRC)
        $(Q)if [ ! -e $@ ]; then vlib $@; fi
#       $(Q)echo; echo "\t### Compiling VHDL design library ###"; echo
#       $(Q)vcom -93 $(QUIET) $(RTL_VHDL_SRC)
        $(Q)echo; echo "\t### Compiling Verilog design library ###"; echo
        $(Q)vlog $(QUIET) -f $< $(DUT_TOP)

# Single compile rule
.PHONY : $(MODELSIM)
$(MODELSIM): modelsim_bench.scr $(TEST_DEFINES_VLG) $(MGC_VPI_LIB) work
        $(Q)echo; echo "\t### Compiling testbench ###"; echo
        $(Q)vlog $(QUIET) -nologo -incr $(BENCH_TOP) -f $<
        $(Q)vopt $(QUIET) $(RTL_TESTBENCH_TOP) $(VOPT_ARGS) -o tb
        $(Q)echo; echo "\t### Launching simulation ###"; echo
        $(Q)vsim $(MGC_VSIM_ARGS) tb

#
# Icarus Verilog simulator build and run rules
#
.PHONY: $(ICARUS_SCRIPT)
$(ICARUS_SCRIPT):  $(RTL_VERILOG_SRC) $(RTL_VERILOG_INCLUDES) $(BOOTROM_VERILOG) $(BENCH_VERILOG_SRC)
        $(Q)echo "# Icarus Verilog simulation script" > $@
        $(Q)echo "# Auto generated. Any alterations will be written over!" >> $@
        $(Q)echo "+incdir+"$(RTL_VERILOG_INCLUDE_DIR) > $@;
        $(Q)echo "+incdir+"$(RTL_SIM_SRC_DIR) >> $@;
        $(Q)echo "+incdir+"$(BENCH_VERILOG_DIR) >> $@;
        $(Q)echo "+incdir+"$(BOOTROM_SW_DIR) >> $@;        
        $(Q)for path in $(BENCH_VERILOG_SRC_SUBDIRS); do echo "+incdir+"$$path >> $@; done
        $(Q)for path in $(BENCH_VERILOG_SRC_SUBDIRS); do echo "-y "$$path >> $@; done
        $(Q)for module in $(RTL_VERILOG_MODULES); do echo "-y " $(RTL_VERILOG_DIR)/$$module >> $@; done
        $(Q)echo "-y" $(RTL_SIM_SRC_DIR) >> $@;
        $(Q)echo "-y" $(BENCH_VERILOG_DIR) >> $@;
        $(Q)echo $(BENCH_TOP) >> $@;
        $(Q) echo >> $@

# Icarus design compilation rule
$(ICARUS_SIM_EXE): $(ICARUS_SCRIPT) $(TEST_DEFINES_VLG) 
        $(Q)echo; echo "\t### Compiling ###"; echo
        $(Q) $(ICARUS_COMPILE) -s$(RTL_TESTBENCH_TOP) -c $< -o $@

# Icarus simulation run rule
$(ICARUS): $(ICARUS_SIM_EXE) $(ICARUS_VPI_LIB)
        $(Q)echo; echo "\t### Launching simulation ###"; echo
        $(Q) $(ICARUS_RUN) $(ICARUS_VPI_ARGS) -l ../out/$(ICARUS_RUN).log $<



.PHONY: rtl-test
rtl-test: clean-sim-test-sw sw clean-test-defines $(TEST_DEFINES_VLG) \
        $(SIMULATOR)

# Run an RTL test followed by checking of generated results
rtl-test-with-check: rtl-test
        $(Q)$(MAKE) check-test-log; \
        if [ $$? -ne 0 ]; then \
                echo; echo "\t### "$(TEST)" test FAIL ###"; echo; \
        else \
                echo; echo "\t### "$(TEST)" test OK ###"; echo; \
        fi

# Do check, don't print anything out
rtl-test-with-check-no-print: rtl-test check-test-log

# Main RTL test loop
rtl-tests:
        $(Q)for test in $(TESTS); do \
                export TEST=$$test; \
                $(MAKE) rtl-test-with-check-no-print; \
                if [ $$? -ne 0 ]; then break; fi; \
                echo; echo "\t### $$test test OK ###"; echo; \
        done


.PHONY: check-test-log
check-test-log:
        $(Q)echo "#!/bin/bash" > $@
        $(Q)echo "function check-test-log { if [ \`grep -c -i "$(TEST_OK_STRING)" "$(RTL_SIM_RESULTS_DIR)"/"$(TEST)$(TEST_OUT_FILE_SUFFIX)"\` -gt 0 ]; then return 0; else return 1; fi; }" >> $@
        $(Q)echo "check-test-log" >> $@
        $(Q)chmod +x $@
        $(Q) echo; echo "\t### Checking simulation results for "$(TEST)" test ###"; echo;
        $(Q)./$@


# Test defines.v file, called recursively, .PHONY to force its generation
.PHONY: $(TEST_DEFINES_VLG)
$(TEST_DEFINES_VLG):
        $(Q)echo "\`define "$(SIM_TYPE)"_SIM" > $@
        $(Q)echo "\`define SIMULATOR_"`echo $(SIMULATOR) | tr  "[:lower:]" "[:upper:]"` > $@
        $(Q)echo "\`define TEST_NAME_STRING \""$(TEST)"\"" >> $@
        $(Q)if [ ! -z $$VCD ]; \
                then echo "\`define VCD" >> $@; \
        fi
        $(Q)if [ ! -z $$VCD_DELAY ]; \
                then echo "\`define VCD_DELAY "$$VCD_DELAY >> $@; \
        fi
        $(Q)if [ ! -z $$VCD_DEPTH ]; \
                then echo "\`define VCD_DEPTH "$$VCD_DEPTH >> $@; \
        fi
        $(Q)if [ ! -z $$VCD_DELAY_INSNS ]; \
                then echo "\`define VCD_DELAY_INSNS "$$VCD_DELAY_INSNS >> $@; \
        fi
        $(Q)if [ ! -z $$END_TIME ]; \
                then echo "\`define END_TIME "$$END_TIME >> $@; \
        fi
        $(Q)if [ ! -z $$END_INSNS ]; \
                then echo "\`define END_INSNS "$$END_INSNS >> $@; \
        fi
        $(Q)if [ ! -z $$PRELOAD_RAM ]; \
                then echo "\`define PRELOAD_RAM "$$END_TIME >> $@; \
        fi
        $(Q)if [ -z $$DISABLE_PROCESSOR_LOGS ]; \
                then echo "\`define PROCESSOR_MONITOR_ENABLE_LOGS" >> $@; \
        fi
        $(Q)if [ ! -z $$VPI ]; \
                then echo "\`define VPI_DEBUG" >> $@; \
        fi
        $(Q)if [ ! -z $$SIM_QUIET ]; \
                then echo "\`define SIM_QUIET" >> $@; \
        fi


#       $(Q)for module in $(GATELEVEL_MODULES); do echo "\`define "$$module"_IS_GATELEVEL " >> $@; done
# More possible test defines go here


# Software make rules (called recursively)
TEST_SW_DIR=$(SW_DIR)/tests/$(shell echo $(TEST) | cut -d "-" -f 1)/sim

# Set PRELOAD_RAM=1 to preload the system memory, avoiding lengthy SPI FLASH 
# bootloader process.
#ifeq ($(PRELOAD_RAM), 1)
SIM_SW_IMAGE ?=sram.vmem
#else
#SIM_SW_IMAGE ?=flash.in
#endif

.PHONY : sw
sw: $(SIM_SW_IMAGE)

flash.in: $(TEST_SW_DIR)/$(TEST).flashin
        $(Q)if [ -L $@ ]; then unlink $@; fi
        $(Q)ln -s $< $@

sram.vmem: $(TEST_SW_DIR)/$(TEST).vmem
        $(Q)if [ -L $@ ]; then unlink $@; fi
        $(Q)ln -s $< $@

.PHONY: $(TEST_SW_DIR)/$(TEST).flashin
$(TEST_SW_DIR)/$(TEST).flashin:
        $(Q) echo; echo "\t### Compiling software ###"; echo;
        $(Q)$(MAKE) -C $(TEST_SW_DIR) $(TEST).flashin

.PHONY: $(TEST_SW_DIR)/$(TEST).vmem
$(TEST_SW_DIR)/$(TEST).vmem:
        $(Q) echo; echo "\t### Compiling software ###"; echo;
        $(Q)$(MAKE) -C $(TEST_SW_DIR) $(TEST).vmem

# Rule to force generation of the processed orpsoc-defines.h file
processed-verilog-headers-in-c-for-vlt:
        $(Q)$(MAKE) -C $(SW_DIR)/lib processed-verilog-headers
# Now copy the file into the Verilated model build path
        $(Q)cp $(SW_DIR)/lib/include/orpsoc-defines.h $(SIM_VLT_DIR)

#
# Cleaning rules
#
clean: clean-sim clean-sim-test-sw clean-bootrom clean-vlt clean-out clean-sw

clean-sim:
        $(Q) echo; echo "\t### Cleaning simulation run directory ###"; echo;
        $(Q)rm -rf *.* lib_* work transcript check-test-log
        $(Q) if [ -e $(VPI_SRC_C_DIR) ]; then $(MAKE) -C $(VPI_SRC_C_DIR) clean; fi

clean-bootrom:
        $(MAKE) -C $(BOOTROM_SW_DIR) clean

clean-out:
        $(Q)rm -rf $(RTL_SIM_RESULTS_DIR)/*.*

# Clean away verilator build path and objects in SystemC path
clean-vlt:
        $(Q)rm -rf $(SIM_VLT_DIR)
        $(Q)$(MAKE) -C $(BENCH_SYSC_SRC_DIR) -f $(BENCH_SYSC_SRC_DIR)/Modules.make clean

clean-test-defines:
        $(Q)rm -f $(TEST_DEFINES_VLG)

clean-sim-test-sw:
        $(Q)if [ -e $(SIM_SW_IMAGE) ]; then unlink $(SIM_SW_IMAGE); fi

clean-sw:
        $(Q) echo; echo "\t### Cleaning simulation sw directories ###"; echo;
        $(Q) $(MAKE) -C $(SW_DIR)/lib clean-all

clean-rtl:
        $(Q) echo; echo "\t### Cleaning generated verilog RTL ###"; echo;
        for module in $(RTL_TO_CHECK); do \
                $(MAKE) -C $(RTL_VERILOG_DIR)/$$module clean; \
        done

# Removes any checked out RTL
distclean: clean
        $(Q) echo; echo "\t### Cleaning generated verilog RTL ###"; echo;
        $(Q)for module in $(RTL_TO_CHECK); do \
                $(MAKE) -C $(RTL_VERILOG_DIR)/$$module distclean; \
        done

################################################################################
# Verilator model build rules
################################################################################

VLT_EXE=Vorpsoc_top
VLT_SCRIPT=verilator.scr

# Script for Verilator
$(SIM_VLT_DIR)/$(VLT_SCRIPT): $(RTL_VERILOG_SRC) $(RTL_VERILOG_INCLUDES) $(BOOTROM_VERILOG)
        $(Q)echo "\tGenerating Verilator script"
        $(Q)echo "# Verilator sources script" > $@
        $(Q)echo "# Auto generated. Any alterations will be written over!" >> $@
        $(Q)echo "+incdir+"$(RTL_VERILOG_INCLUDE_DIR) > $@;
        $(Q)echo "+incdir+"$(BOOTROM_SW_DIR) >> $@;        
        $(Q)echo "+incdir+"$(SIM_RUN_DIR) >> $@;
        $(Q)for module in $(RTL_VERILOG_MODULES); do echo "-y " $(RTL_VERILOG_DIR)/$$module >> $@; done
        $(Q)echo $(DUT_TOP) >> $@;
        $(Q) echo >> $@


SYSC_LIB_ARCH_DIR=$(shell ls $$SYSTEMC | grep "lib-")


# List of System C models - use this list to link the sources into the Verilator
# build directory
SYSC_MODELS=OrpsocAccess MemoryLoad

ifdef VLT_LINT
VLT_FLAGS +=--lint-only
endif

ifdef VLT_DEBUG
VLT_DEBUG_COMPILE_FLAGS = -g
# Enabling the following generates a TON of debugging
# when running verilator. Not so helpful.
#VLT_FLAGS = --debug --dump-tree
VLT_SYSC_DEBUG_DEFINE = VLT_DEBUG=1
endif

# This will build a verilator model that will generate profiling information
# suitable for gprof
# Run it through gprof after exection with: gprof Vorpsoc_top > gprof.out
# then run this through the Verilator tool with:
# verilator_profcfunc gprof.out > vprof.out
ifdef VLT_EXECUTION_PROFILE_BUILD
VLT_CPPFLAGS +=-g -pg
# Maybe add these to VLT_CPPFLAGS: -ftest-coverage -fprofile-arcs
VLT_FLAGS +=-profile-cfuncs
endif

# If set on the command line we build the cycle accurate model which will 
# generate verilator-specific profiling information. This is useful for 
# checking the efficiency of the model - not really useful for checking code 
# or the function of the model.
ifdef VLT_DO_PERFORMANCE_PROFILE_BUILD
VLT_CPPFLAGS += -fprofile-generate -fbranch-probabilities -fvpt -funroll-loops -fpeel-loops -ftracer
else
VLT_CPPFLAGS +=-fprofile-use -Wcoverage-mismatch
endif

# Set VLT_IN_GDB=1 when making if going to run the cycle accurate model 
# executable in GDB.
ifdef VLT_IN_GDB
VLT_CPPFLAGS +=-g -O0 
else
# The default optimisation flag applied to all of the cycle accurate model files
VLT_CPPFLAGS +=-O3
endif

# VCD Enabled by default when building, enable it at runtime
VLT_FLAGS +=-trace
TRACE_FLAGS=-DVM_TRACE=1 -I${SYSTEMPERL}/src

# Verilator tuning
# Inlining:
VLT_FLAGS +=--inline-mult 1
# Optimisation option for Verilator scripts
VLT_FLAGS +=-O3
# X-assign - at reset, all signals are set to random values, helps find rst bugs
VLT_FLAGS +=-x-assign unique

VLT_TRACEOBJ = verilated_vcd_c


# This is the list of extra models we'll issue make commands for
# Included is the SystemPerl trace model
SYSC_MODELS_BUILD=$(SYSC_MODELS) $(VLT_TRACEOBJ)

# List of sources for rule sensitivity
SYSC_MODEL_SOURCES=$(shell ls $(BENCH_SYSC_SRC_DIR)/*.cpp)
SYSC_MODEL_SOURCES +=$(shell ls $(BENCH_SYSC_INCLUDE_DIR)/*.h)

VLT_MODULES_OBJS=$(shell for mod in $(SYSC_MODELS_BUILD); do echo $(SIM_VLT_DIR)/$$mod.o; done)

VLT_MODEL_LINKS=$(shell for SYSCMODEL in $(SYSC_MODELS); do echo $(SIM_VLT_DIR)/$$SYSCMODEL.cpp; done) 

# Make Verilator build path if it doesn't exist
$(SIM_VLT_DIR):
        mkdir -p $@

# Dummy files the RTL requires: timescale.v
DUMMY_FILES_FOR_VLT=$(SIM_VLT_DIR)/timescale.v
$(DUMMY_FILES_FOR_VLT):
        $(Q)for file in $@; do if [ ! -e $$file ]; then touch $$file; fi; done

build-vlt: rtl $(SIM_VLT_DIR) $(DUMMY_FILES_FOR_VLT) $(VLT_MODEL_LINKS) \
        processed-verilog-headers-in-c-for-vlt  $(SIM_VLT_DIR)/$(VLT_EXE)

# Main Cycle-accurate build rule
prepare-vlt: build-vlt
        @echo;echo "\tCycle-accurate model compiled successfully"
        @echo;echo "\tRun the executable with the -h option for usage instructions:";echo
        $(SIM_VLT_DIR)/$(VLT_EXE) -h
        @echo;echo

$(SIM_VLT_DIR)/$(VLT_EXE): $(SIM_VLT_DIR)/lib$(VLT_EXE).a $(SIM_VLT_DIR)/OrpsocMain.o
# Final linking of the simulation executable. Order of libraries here is important!
        $(Q)echo; echo "\tGenerating simulation executable"; echo
        $(Q)cd $(SIM_VLT_DIR) && g++ $(VLT_DEBUG_COMPILE_FLAGS) $(VLT_CPPFLAGS) -I$(BENCH_SYSC_INCLUDE_DIR) -I$(SIM_VLT_DIR) -I$(VERILATOR_ROOT)/include -I$(SYSTEMC)/include -o $(VLT_EXE) -L. -L$(BENCH_SYSC_SRC_DIR) -L$(SYSTEMC)/$(SYSC_LIB_ARCH_DIR) OrpsocMain.o -l$(VLT_EXE) -lmodules -lsystemc

# Now compile the top level systemC "testbench" module from the systemC source path
$(SIM_VLT_DIR)/OrpsocMain.o: $(BENCH_SYSC_SRC_DIR)/OrpsocMain.cpp
        @echo; echo "\tCompiling top level SystemC testbench"; echo
        cd $(SIM_VLT_DIR) && g++ $(VLT_DEBUG_COMPILE_FLAGS) $(VLT_CPPFLAGS) $(TRACE_FLAGS) -I$(BENCH_SYSC_INCLUDE_DIR) -I$(SIM_VLT_DIR) -I$(VERILATOR_ROOT)/include -I$(SYSTEMC)/include -c $(BENCH_SYSC_SRC_DIR)/OrpsocMain.cpp 

$(SIM_VLT_DIR)/lib$(VLT_EXE).a: $(SIM_VLT_DIR)/$(VLT_EXE)__ALL.a $(VLT_MODULES_OBJS) $(SIM_VLT_DIR)/verilated.o
# Now archive all of the libraries from verilator witht he other modules we might have
        @echo; echo "\tArchiving libraries into lib"$(VLT_EXE)".a"; echo
        $(Q)cd $(SIM_VLT_DIR) && \
        cp $(VLT_EXE)__ALL.a lib$(VLT_EXE).a && \
        ar rcs lib$(VLT_EXE).a verilated.o; \
        for SYSCMODEL in $(SYSC_MODELS_BUILD); do \
                ar rcs lib$(VLT_EXE).a $$SYSCMODEL.o; \
        done

$(SIM_VLT_DIR)/verilated.o: $(SYSC_MODEL_SOURCES)
        @echo; echo "\tCompiling verilated.o"; echo
        $(Q)cd $(SIM_VLT_DIR) && \
        export CXXFLAGS=$(VLT_DEBUG_COMPILE_FLAGS); \
        export USER_CPPFLAGS="$(VLT_CPPFLAGS)"; \
        export USER_LDDFLAGS="$(VLT_CPPFLAGS)"; \
        $(MAKE) -f $(VLT_EXE).mk verilated.o

print-sysmod-objs:
        $(Q)echo $(VLT_MODULES_OBJS):

$(VLT_MODULES_OBJS):
# Compile the module files
        @echo; echo "\tCompiling SystemC models"
        $(Q)cd $(SIM_VLT_DIR) && \
        for SYSCMODEL in $(SYSC_MODELS_BUILD); do \
                echo;echo "\t$$SYSCMODEL"; echo; \
                export CXXFLAGS=$(VLT_DEBUG_COMPILE_FLAGS); \
                export USER_CPPFLAGS="$(VLT_CPPFLAGS) -I$(BENCH_SYSC_INCLUDE_DIR)"; \
                export USER_LDDFLAGS="$(VLT_CPPFLAGS)"; \
                 $(MAKE) -f $(VLT_EXE).mk $$SYSCMODEL.o; \
        done    

$(SIM_VLT_DIR)/$(VLT_EXE)__ALL.a: $(SIM_VLT_DIR)/$(VLT_EXE).mk $(SYSC_MODEL_SOURCES)
        @echo; echo "\tCompiling main design"; echo
        $(Q)cd $(SIM_VLT_DIR) && \
        export USER_CPPFLAGS="$(VLT_CPPFLAGS)"; \
        export USER_LDDFLAGS="$(VLT_CPPFLAGS)"; \
        $(MAKE) -f $(VLT_EXE).mk $(VLT_EXE)__ALL.a

$(SIM_VLT_DIR)/$(VLT_EXE).mk: $(SIM_VLT_DIR)/$(VLT_SCRIPT) $(BENCH_SYSC_SRC_DIR)/libmodules.a
# Now call verilator to generate the .mk files
        $(Q)echo; echo "\tGenerating makefiles with Verilator"; echo
        $(Q)cd $(SIM_VLT_DIR) && \
        verilator -language 1364-2001 --top-module orpsoc_top -Mdir . -sc $(VLT_FLAGS) -I$(BENCH_SYSC_INCLUDE_DIR) -I$(BENCH_SYSC_SRC_DIR) -f $(SIM_VLT_DIR)/$(VLT_SCRIPT)

# SystemC modules library
$(BENCH_SYSC_SRC_DIR)/libmodules.a:
        @echo; echo "\tCompiling SystemC modules"; echo
        $(Q)export VLT_CPPFLAGS="$(VLT_CPPFLAGS)"; \
        $(MAKE) -C $(BENCH_SYSC_SRC_DIR) -f $(BENCH_SYSC_SRC_DIR)/Modules.make $(VLT_SYSC_DEBUG_DEFINE) 

print-vlt-model-link-paths:
        $(Q)echo $(VLT_MODEL_LINKS)

$(VLT_MODEL_LINKS):
# Link all the required system C model files into the verilator work dir
        for SYSCMODEL in $(SYSC_MODELS); do \
                if [ ! -e $(SIM_VLT_DIR)/$$SYSCMODEL.cpp ]; then \
                echo "\tLinking SystemC model $$SYSCMODEL  Verilator model build path"; \
                        ln -s $(BENCH_SYSC_SRC_DIR)/$$SYSCMODEL.cpp $(SIM_VLT_DIR)/$$SYSCMODEL.cpp; \
                        ln -s $(BENCH_SYSC_INCLUDE_DIR)/$$SYSCMODEL.h $(SIM_VLT_DIR)/$$SYSCMODEL.h; \
                fi; \
        done


################################################################################
# Verilator model test rules
################################################################################

vlt-test: build-vlt clean-sim-test-sw sw
        $(SIM_VLT_DIR)/$(VLT_EXE) $(TEST)

vlt-tests:
        $(Q)for test in $(TESTS); do \
                export TEST=$$test; \
                $(MAKE) vlt-test; \
                if [ $$? -ne 0 ]; then break; fi; \
                echo; echo "\t### $$test test OK ###"; echo; \
        done



###############################################################################
# Verilator profiled model build rules
###############################################################################
# To run this, first run a "make prepare-vlt VLT_DO_PROFILING=1" then do a 
# "make clean" and then a "make prepare-vlt_profiled"
# This new make target copies athe results of the profiling back to the right
# paths before we create everything again
###############################################################################
.PHONY: prepare-vlt-profiled
prepare-vlt-profiled: $(SIM_VLT_DIR)/OrpsocMain.gcda \
        clean-vlt-after-profile-run \
        rtl $(SIM_VLT_DIR) $(DUMMY_FILES_FOR_VLT) $(VLT_MODEL_LINKS) \
        $(SIM_VLT_DIR)/$(VLT_EXE)

$(SIM_VLT_DIR)/OrpsocMain.gcda: $(SIM_VLT_DIR)/$(VLT_EXE)-for-profiling
        $(MAKE) -C $(SW_DIR)/apps/dhry dhry.elf NUM_RUNS=5000
#       $(SIM_VLT_DIR)/$(VLT_EXE) -f $(SW_DIR)/dhry/dhry.elf -v -l sim.log --crash-monitor
        $(SIM_VLT_DIR)/$(VLT_EXE) -f $(SW_DIR)/apps/dhry/dhry.elf

# Clean all compiled things
clean-vlt-after-profile-run:
        $(Q)echo "\tCleaning away compiled cycle-accurate files"
        $(Q)rm -f $(SIM_VLT_DIR)/*.[oa] $(SIM_VLT_DIR)/$(VLT_EXE)
        $(Q)rm -f $(BENCH_SYSC_SRC_DIR)/*.[oa]

#.PHONY: $(SIM_VLT_DIR)/$(VLT_EXE)-for-profiling
$(SIM_VLT_DIR)/$(VLT_EXE)-for-profiling:
        $(MAKE) build-vlt VLT_DO_PERFORMANCE_PROFILE_BUILD=1

.PHONY: vlt-restore-profileoutput
vlt-restore-profileoutput:
        @echo;echo "\tRestoring profiling outputs"; echo
        $(Q)mkdir -p ../vlt
        $(Q)cp /tmp/*.gc* $(SIM_VLT_DIR)
        $(Q)cp /tmp/*.gc* $(BENCH_SYSC_SRC_DIR)


lint-vlt: $(SIM_VLT_DIR) rtl $(DUMMY_FILES_FOR_VLT) $(SIM_VLT_DIR)/$(VLT_SCRIPT)
        $(Q)echo; echo "\tLinting design with Verilator"; echo
        $(Q)cd $(SIM_VLT_DIR) && \
        verilator -language 1364-2001 --top-module orpsoc_top --lint-only -Mdir . -sc $(VLT_FLAGS) -I$(BENCH_SYSC_INCLUDE_DIR) -I$(BENCH_SYSC_SRC_DIR) -f $(SIM_VLT_DIR)/$(VLT_SCRIPT)