build/xilinx/vivado: add vivado_build_args/vivado_build_argdict for yosys synthesis...

diff --git a/litex/build/xilinx/vivado.py b/litex/build/xilinx/vivado.py
index 9546391f5d80d09868f4984e6b841e9012d2ee4a..01fd8075b16def51092dc94b92d08586b4938a4c 100644 (file)
--- a/litex/build/xilinx/vivado.py
+++ b/litex/build/xilinx/vivado.py
@@ -270,3 +270,10 @@ class XilinxVivadoToolchain:
     def add_false_path_constraint(self, platform, from_, to):
         if (to, from_) not in self.false_paths:
             self.false_paths.add((from_, to))
+
+def vivado_build_args(parser):
+    parser.add_argument("--synth-mode", default=None, help="synthesis mode (vivado or yosys)")
+
+
+def vivado_build_argdict(args):
+    return {"synth_mode": args.synth_mode}