diff --git a/himbaechel/uarch/gatemate/ccf.cc b/himbaechel/uarch/gatemate/ccf.cc
index b6570608..16620d77 100644
--- a/himbaechel/uarch/gatemate/ccf.cc
+++ b/himbaechel/uarch/gatemate/ccf.cc
@@ -261,6 +261,9 @@ struct GateMateCCFReader
 
                                     log("size = %d src=%s pB=(%d,%d, %d,%d)\n", size, src_location.c_str(), x1, y1, x2,
                                         y2);
+                                    IdString scopename(ctx, src_location.c_str());
+                                    ctx->createRectangularRegion(scopename, x1, y1, x2, y2);
+                                    uarch->scopenames.emplace(scopename);
                                 } else {
                                     log_error("Placebox format invalid: %s in line %d\n", pb_position.c_str(), lineno);
                                 }
diff --git a/himbaechel/uarch/gatemate/gatemate.h b/himbaechel/uarch/gatemate/gatemate.h
index 7298325a..31aab310 100644
--- a/himbaechel/uarch/gatemate/gatemate.h
+++ b/himbaechel/uarch/gatemate/gatemate.h
@@ -109,6 +109,7 @@ struct GateMateImpl : HimbaechelAPI
     MultiDieStrategy strategy;
     dict<int, IdString> index_to_die;
     dict<IdString, int> die_to_index;
+    pool<IdString> scopenames;
 
   private:
     bool getChildPlacement(const BaseClusterInfo *cluster, Loc root_loc,
diff --git a/himbaechel/uarch/gatemate/pack.cc b/himbaechel/uarch/gatemate/pack.cc
index cac93631..f6223515 100644
--- a/himbaechel/uarch/gatemate/pack.cc
+++ b/himbaechel/uarch/gatemate/pack.cc
@@ -519,6 +519,17 @@ void GateMatePacker::assign_regions()
     log_info("Assign cell region based on attributes..\n");
     for (auto &cell : ctx->cells) {
         CellInfo &ci = *cell.second;
+        std::string scope = "top";
+        if (ci.attrs.count(ctx->id("scopename"))) {
+            scope = str_or_default(ci.attrs, ctx->id("scopename"), "");
+            scope = "top " + scope;
+        } else if (ci.attrs.count(ctx->id("hdlname"))) {
+            scope = str_or_default(ci.attrs, ctx->id("hdlname"), "");
+            scope = "top " + scope;
+        }
+        IdString name = IdString(ctx,scope.c_str());
+        if (uarch->scopenames.count(name))
+            ctx->constrainCellToRegion(ci.name, name);
         if (ci.attrs.count(id_GATEMATE_DIE) != 0) {
             std::string die_name = str_or_default(ci.attrs, id_GATEMATE_DIE, "");
             IdString die = ctx->id(die_name);