Remove metal3 blanket blockage on library cells.

compiler/geometry.py

@@ -3,7 +3,7 @@ This provides a set of useful generic types for the gdsMill interface.
 """
 import debug
 from vector import vector
-from tech import GDS
+import tech
 import math
 from globals import OPTS
 
@@ -154,17 +154,18 @@ class instance(geometry):
             angle += math.radians(180.0)
             
         if self.mod.is_library_cell:
-            # For lib cells, block the whole thing
-            b = self.mod.get_boundary()
-            newb = self.transform_coords(b, self.offset, mirr, angle)
-            return [newb]
+            # For lib cells, block the whole thing except on metal3
+            # since they shouldn't use metal3
+            if layer==tech.layer["metal1"] or layer==tech.layer["metal2"]:
+                return [self.transform_coords(self.mod.get_boundary(), self.offset, mirr, angle)]
+            else:
+                return []
         else:
 
             blockages = self.mod.get_blockages(layer)
             new_blockages = []
             for b in blockages:
-                newb = self.transform_coords(b,self.offset, mirr, angle)
-                new_blockages.append(newb)
+                new_blockages.append(self.transform_coords(b,self.offset, mirr, angle))
             return new_blockages
         
     def gds_write_file(self, new_layout):
@@ -269,7 +270,7 @@ class label(geometry):
         self.offset = vector(offset).snap_to_grid()
 
         if zoom<0:
-            self.zoom = GDS["zoom"]
+            self.zoom = tech.GDS["zoom"]
         else:
             self.zoom = zoom
 

compiler/lef.py

@@ -15,15 +15,13 @@ class lef:
         # LEF db units per micron
         self.lef_units = 1000
         # These are the layers of the obstructions
-        self.layer = layers
+        self.lef_layers = layers
 
     def lef_write(self, lef_name):
         """Write the entire lef of the object to the file."""
         debug.info(3, "Writing to {0}".format(lef_name))
 
         self.indent = "" # To maintain the indent level easily
-        self.lef_units = 1000
-        self.lef_layer = ["metal1", "metal2", "metal3"]   
 
         self.lef  = open(lef_name,"w")
         self.lef_write_header()
@@ -100,7 +98,7 @@ class lef:
     def lef_write_obstructions(self):
         """ Write all the obstructions on each layer """
         self.lef.write("{0}OBS\n".format(self.indent))
-        for layer in self.lef_layer:
+        for layer in self.lef_layers:
             self.lef.write("{0}LAYER  {1} ;\n".format(self.indent,layer))
             self.indent += "   "
             blockages = self.get_blockages(layer,True)

compiler/openram.py

@@ -123,13 +123,13 @@ last_time=print_time("GDS", datetime.datetime.now(), last_time)
 lefname = OPTS.output_path + s.name + ".lef"
 print("LEF: Writing to {0}".format(lefname))
 s.lef_write(lefname)
-last_time=print_time("LEF writing", datetime.datetime.now(), last_time)
+last_time=print_time("LEF", datetime.datetime.now(), last_time)
 
 # Write a verilog model
 vname = OPTS.output_path + s.name + ".v"
 print("Verilog: Writing to {0}".format(vname))
 s.verilog_write(vname)
-last_time=print_time("Verilog writing", datetime.datetime.now(), last_time)
+last_time=print_time("Verilog", datetime.datetime.now(), last_time)
 
 globals.end_openram()
 print_time("End",datetime.datetime.now(), start_time)