Added hooks to the Tcl code in magic for schematic-to-layout
conversion, adding an "Import SPICE" menu item to the magic setup
when the PDK is installed.  Only lightly tested, and needs some
additional development.

VERSION

diff --git a/VERSION b/VERSION
index 4cf8fd6..82d042d 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.0.137
+1.0.138

common/netlist_to_layout.py

diff --git a/common/netlist_to_layout.py b/common/netlist_to_layout.py
index 0130340..f371cbb 100755
--- a/common/netlist_to_layout.py
+++ b/common/netlist_to_layout.py
@@ -217,7 +217,7 @@
     print('writeall force', file=ofile)
     print('quit -noprompt', file=ofile)
 
-def parse_layout(topname, lines, ofile):
+def parse_layout(topname, lines, library, ofile):
     global debugmode
 
     subrex = re.compile('.subckt[ \t]+(.*)$', re.IGNORECASE)
@@ -356,7 +356,7 @@
 
     with open(scriptpath, 'w') as ofile:
         generate_layout_start(library, ofile)
-        parse_layout(topname, spicelines, ofile)
+        parse_layout(topname, spicelines, library, ofile)
         generate_layout_end(ofile)
 
     myenv = os.environ.copy()

sky130/magic/sky130.tcl

diff --git a/sky130/magic/sky130.tcl b/sky130/magic/sky130.tcl
index a653c4b..3833c01 100644
--- a/sky130/magic/sky130.tcl
+++ b/sky130/magic/sky130.tcl
@@ -29,24 +29,7 @@
 
 # Set options specific to this PDK
 set Opts(hidelocked) 1
-set Opts(hidespecial) 1
-
-# Create new "tool" proc that doesn't have the netlist tool.
-proc magic::nexttool {} {
-   global Opts
-
-   # Don't attempt to switch tools while a selection drag is active
-   if {$Opts(motion) == {}} {
-      switch $Opts(tool) {
-         box { magic::tool wiring }
-         wiring { magic::tool pick }
-         default { magic::tool box }
-      }
-   }
-}
-
-# This shoule be part of sitedef. . .
-macro space magic::nexttool
+set Opts(hidespecial) 0
 
 # Wrap the closewrapper procedure so that closing the last
 # window is equivalent to quitting.
@@ -215,8 +198,13 @@
    magic::add_toolkit_command $layoutframe "vpp 4.4x4.6 m1-m2 l1 shield" \
 	    "magic::gencell sky130::sky130_fd_pr__cap_vpp_04p4x04p6_m1m2_l1shield" pdk2
 
+   # Additional DRC style for routing only---add this to the DRC menu
    ${layoutframe}.titlebar.mbuttons.drc.toolmenu add command -label "DRC Routing" -command {drc style drc(routing)}
 
+   # Add SPICE import function to File menu
+   ${layoutframe}.titlebar.mbuttons.file.toolmenu insert 4 command -label "Import SPICE" -command {sky130::importspice}
+   ${layoutframe}.titlebar.mbuttons.file.toolmenu insert 4 separator
+
    # Add command entry window by default if enabled
    if {[info exists Opts(cmdentry)]} {
       set Winopts(${framename},cmdentry) $Opts(cmdentry)
@@ -229,6 +217,22 @@
 }
 
 #----------------------------------------------------------------
+# Menu callback function to read a SPICE netlist and generate an
+# initial layout using the SKYWATER TECHNAME gencells.
+#----------------------------------------------------------------
+
+proc sky130::importspice {} {
+   global CAD_ROOT
+
+   set Layoutfilename [ tk_getOpenFile -filetypes \
+	    {{SPICE {.spice .spc .spi .ckt .cir .sp \
+	    {.spice .spc .spi .ckt .cir .sp}}} {"All files" {*}}}]
+   if {$Layoutfilename != ""} {
+      magic::netlist_to_layout $Layoutfilename sky130
+   }
+}
+
+#----------------------------------------------------------------
 
 proc sky130::mcon_draw {{dir default}} {
    set w [magic::i2u [box width]]