libero enable enhanced constraints

Libero 12.0 does not support any more classic constraint flow

diff --git a/litex/build/microsemi/libero_soc.py b/litex/build/microsemi/libero_soc.py
index 670a0c331018c9559817ce86d665bd1bc65910e1..f827d1548c19d688fb54c935eb2f1a4122ead95e 100644 (file)
--- a/litex/build/microsemi/libero_soc.py
+++ b/litex/build/microsemi/libero_soc.py
@@ -69,7 +69,7 @@ def _build_tcl(platform, sources, build_dir, build_name):
         "-standalone_peripheral_initialization 0",
         "-instantiate_in_smartdesign 1",
         "-ondemand_build_dh 0",
-        "-use_enhanced_constraint_flow 0",
+        "-use_enhanced_constraint_flow 1",
         "-hdl {VERILOG}",
         "-family {PolarFire}",
         "-die {}",