1 files changed, 7 insertions, 1 deletions
diff --git a/ecp5/main.cc b/ecp5/main.cc
index 15027a5a..de279e63 100644
--- a/ecp5/main.cc
+++ b/ecp5/main.cc
@@ -59,6 +59,8 @@ po::options_description ECP5CommandHandler::getArchOptions()
     specific.add_options()("um5g-45k", "set device type to LFE5UM5G-45F");
     specific.add_options()("um5g-85k", "set device type to LFE5UM5G-85F");
 
+    specific.add_options()("sa-placer", "use pure simulated annealing placer instead of HeAP analytic placer");
+
     specific.add_options()("package", po::value<std::string>(), "select device package (defaults to CABGA381)");
     specific.add_options()("speed", po::value<int>(), "select device speedgrade (6, 7 or 8)");
 
@@ -149,8 +151,12 @@ std::unique_ptr<Context> ECP5CommandHandler::createContext()
             chipArgs.speed = ArchArgs::SPEED_6;
         }
     }
+    auto ctx = std::unique_ptr<Context>(new Context(chipArgs));
+
+    if (vm.count("sa-placer"))
+        ctx->settings[ctx->id("sa_placer")] = "1";
 
-    return std::unique_ptr<Context>(new Context(chipArgs));
+    return ctx;
 }
 
 void ECP5CommandHandler::customAfterLoad(Context *ctx)