Fix netlist_only in sky130

compiler/pgates/pinv_dec.py

@@ -13,10 +13,6 @@ from vector import vector
 from globals import OPTS
 from sram_factory import factory
 
-if(OPTS.tech_name == "sky130"):
-    from tech import nmos_bins, pmos_bins
-
-    
 class pinv_dec(pinv.pinv):
     """
     This is another version of pinv but with layout for the decoder.

compiler/pgates/ptx.py

@@ -129,7 +129,7 @@ class ptx(design.design):
         # be decided in the layout later.
         area_sd = 2.5 * self.poly_width * self.tx_width
         perimeter_sd = 2 * self.poly_width + 2 * self.tx_width
-        if OPTS.tech_name == "sky130" and OPTS.lvs_exe[0] == "calibre":
+        if OPTS.tech_name == "sky130" and OPTS.lvs_exe and OPTS.lvs_exe[0] == "calibre":
             # sky130 simulation cannot use the mult parameter in simulation
             (self.tx_width, self.mults) = pgate.bin_width(self.tx_type, self.tx_width)
             main_str = "M{{0}} {{1}} {0} m={1} w={2} l={3} ".format(spice[self.tx_type],
@@ -150,7 +150,7 @@ class ptx(design.design):
         self.spice_device = main_str + area_str
         self.spice.append("\n* ptx " + self.spice_device)
 
-        if OPTS.tech_name == "sky130" and OPTS.lvs_exe[0] == "calibre":
+        if OPTS.tech_name == "sky130" and OPTS.lvs_exe and OPTS.lvs_exe[0] == "calibre":
             # sky130 requires mult parameter too
             self.lvs_device = "M{{0}} {{1}} {0} m={1} w={2} l={3} mult={1}".format(spice[self.tx_type],
                                                                                    self.mults,

compiler/pgates/single_level_column_mux.py

@@ -57,6 +57,7 @@ class single_level_column_mux(pgate.pgate):
         self.width = self.bitcell.width
         self.height = self.nmos_upper.uy() + self.pin_height
 
+        self.place_ptx()
         self.connect_poly()
         self.add_bitline_pins()
         self.connect_bitlines()
@@ -104,21 +105,28 @@ class single_level_column_mux(pgate.pgate):
         """ Create the two pass gate NMOS transistors to switch the bitlines"""
 
         # Space it in the center
-        nmos_lower_position = self.nmos.active_offset.scale(0, 1) \
-                              + vector(0.5 * self.bitcell.width- 0.5 * self.nmos.active_width, 0)
         self.nmos_lower = self.add_inst(name="mux_tx1",
-                                        mod=self.nmos,
-                                        offset=nmos_lower_position)
+                                        mod=self.nmos)
         self.connect_inst(["bl", "sel", "bl_out", "gnd"])
 
         # This aligns it directly above the other tx with gates abutting
-        nmos_upper_position = nmos_lower_position \
-                                + vector(0, self.nmos.active_height + max(self.active_space, self.poly_space))
         self.nmos_upper = self.add_inst(name="mux_tx2",
-                                        mod=self.nmos,
-                                        offset=nmos_upper_position)
+                                        mod=self.nmos)
         self.connect_inst(["br", "sel", "br_out", "gnd"])
         
+    def place_ptx(self):
+        """ Create the two pass gate NMOS transistors to switch the bitlines"""
+
+        # Space it in the center
+        nmos_lower_position = self.nmos.active_offset.scale(0, 1) \
+                              + vector(0.5 * self.bitcell.width- 0.5 * self.nmos.active_width, 0)
+        self.nmos_lower.place(nmos_lower_position)
+
+        # This aligns it directly above the other tx with gates abutting
+        nmos_upper_position = nmos_lower_position \
+                              + vector(0, self.nmos.active_height + max(self.active_space, self.poly_space))
+        self.nmos_upper.place(nmos_upper_position)
+
         if OPTS.tech_name == "sky130":
             self.add_implants()
         

compiler/verify/__init__.py

@@ -30,13 +30,15 @@ if not OPTS.check_lvsdrc:
     OPTS.drc_exe = None
     OPTS.lvs_exe = None
     OPTS.pex_exe = None
+    if OPTS.tech_name == "sky130":
+        OPTS.magic_exe = None
 else:
     debug.info(1, "Finding DRC/LVS/PEX tools.")
     OPTS.drc_exe = get_tool("DRC", ["calibre", "assura", "magic"], drc_name)
     OPTS.lvs_exe = get_tool("LVS", ["calibre", "assura", "netgen"], lvs_name)
     OPTS.pex_exe = get_tool("PEX", ["calibre", "magic"], pex_name)
     if OPTS.tech_name == "sky130":
-        OPTS.magic_exe = get_tool("GDS", ["magic"], None)
+        OPTS.magic_exe = get_tool("GDS", ["magic"])
 
 if not OPTS.drc_exe:
     from .none import run_drc, print_drc_stats
@@ -71,7 +73,7 @@ else:
     debug.warning("Did not find a supported PEX tool.")
 
 if OPTS.tech_name == "sky130":
-    if "magic"==OPTS.magic_exe[0]:
+    if OPTS.magic_exe and "magic"==OPTS.magic_exe[0]:
         from .magic import filter_gds
     else:
         debug.warning("Did not find Magic.")