build/lattice/radiant: allows extra configuration (prj_set_strategy_value XX=YY) to be added at script creation time

litex/build/lattice/radiant.py

@@ -83,9 +83,10 @@ class LatticeRadiantToolchain(GenericToolchain):
     def __init__(self):
         super().__init__()
 
-        self._timingstrict = False
-        self._synth_mode   = "radiant"
-        self._yosys        = None
+        self._timingstrict      = False
+        self._synth_mode        = "radiant"
+        self._yosys             = None
+        self._prj_strategy_opts = {}
 
     def build(self, platform, fragment,
         timingstrict   = False,
@@ -176,6 +177,10 @@ class LatticeRadiantToolchain(GenericToolchain):
         # Set top level
         tcl.append("prj_set_impl_opt top \"{}\"".format(self._build_name))
 
+        # Set user project extra configurations
+        for k,v in self._prj_strategy_opts.items():
+            tcl.append(f"prj_set_strategy_value {k}={v}")
+
         # Save project
         tcl.append("prj_save")
 
@@ -283,6 +288,16 @@ class LatticeRadiantToolchain(GenericToolchain):
                 return
         raise Exception("Failed to meet timing")
 
+    """
+    Set optional configuration for syn, par, bit.
+    Attributes
+    ==========
+    strategy_opts: dict
+        keys/values to inject at script creation time
+    """
+    def set_prj_strategy_opts(self, strategy_opts={}):
+        self._prj_strategy_opts.update(strategy_opts)
+
 
 def radiant_build_args(parser):
     toolchain_group = parser.add_argument_group(title="Radiant toolchain options")