Adding Vortex Yosys build support

hw/syn/yosys/synth.sh

@@ -1,24 +1,67 @@
 #!/bin/bash
 
-dir_list='../../rtl/libs ../../rtl/cache ../../rtl/interfaces ../../rtl'
+# this script uses sv2v and yosys tools to run.
+# sv2v: https://github.com/zachjs/sv2v
+# yosys: http://www.clifford.at/yosys/
 
+# exit when any command fails
+set -e
+
+source=""
+top_level=""
+dir_list=()
+defines=""
+
+usage() { echo "$0 usage:" && grep " .)\ #" $0; exit 0; }
+[ $# -eq 0 ] && usage
+while getopts "hs:t:I:D:" arg; do
+    case $arg in
+    s) # source
+        source=${OPTARG}
+        ;;
+    t) # top-level
+        top_level=${OPTARG}
+        ;;
+    I) # include directory
+        dir_list+=(${OPTARG})
+        ;;
+    D) # macro definition
+        defines="$defines -D${OPTARG}"
+        ;;
+    h | *) 
+      usage
+      exit 0
+      ;;
+  esac
+done
+
+echo "top_level=$top_level, source=$source, defines=$defines"
+
+# process include paths
 inc_list=""
-for dir in $dir_list; do
+for dir in "${dir_list[@]}" 
+do
+    echo "include: $dir" >> synth.log
 	inc_list="$inc_list -I$dir"
 done
 
-echo "inc_list=$inc_list"
+# process source files
+file_list=""
+for dir in "${dir_list[@]}" 
+do
+    for file in $(find $dir -maxdepth 1 -name '*.v' -o -name '*.sv' -type f) 
+    do
+        echo "file: $file" >> synth.log
+        file_list="$file_list $file"
+    done
+done
+
+# system-verilog to verilog conversion
+sv2v $defines -w output.v $inc_list $file_list
 
 {
-    # read design sources
-    for dir in $dir_list; do
-        for file in $(find $dir -maxdepth 1 -name '*.v' -o -name '*.sv' -type f) 
-        do
-            echo "read_verilog -sv $inc_list $file"
-        done
-    done
-
-    echo "hierarchy -check -top Vortex"
+    echo "read_verilog -sv output.v"
+    echo "hierarchy -check -top $top_level"
 
     # insertation of global reset
 	echo "add -global_input reset 1"
@@ -29,4 +72,4 @@ echo "inc_list=$inc_list"
     echo "write_verilog -noexpr -noattr synth.v"
 } > synth.ys
 
-yosys -l synth.log synth.ys
+yosys -l yosys.log synth.ys