PDK: allow specifying KLayout tech file

Signed-off-by: Pawel Czarnecki <[email protected]>

Author: lpawelcz

dependency_support/com_google_skywater_pdk/sky130_fd_sc_hd/BUILD

@@ -3,6 +3,7 @@ load("//pdk:open_road_configuration.bzl", "open_road_pdk_configuration")
 exports_files([
     "pdk.patch",
     "fill.json", # Imported from OpenROAD-flow-scripts on 24.07.2023 at 6ec980e1d49a1a8dcdd1e25ed81255b4bb8285c8 from: https://github.com/The-OpenROAD-Project/OpenROAD-flow-scripts/blob/6ec980e1d49a1a8dcdd1e25ed81255b4bb8285c8/flow/platforms/sky130hd/fill.json
+    "sky130hd.lyt", # Imported from OpenROAD-flow-scripts on 24.07.2023 at 6ec980e1d49a1a8dcdd1e25ed81255b4bb8285c8 from: https://github.com/The-OpenROAD-Project/OpenROAD-flow-scripts/blob/6ec980e1d49a1a8dcdd1e25ed81255b4bb8285c8/flow/platforms/sky130hd/sky130hd.lyt
 ])
 
 open_road_pdk_configuration(
@@ -28,6 +29,7 @@ open_road_pdk_configuration(
         "met5": "0.5",
     },
     global_routing_signal_layers = "met1-met5",
+    klayout_tech_file = "sky130hd.lyt",
     pdn_config = "pdn_config.pdn",
     pin_horizontal_metal_layer = "met3",
     pin_vertical_metal_layer = "met2",

synthesis/tests/klayout.lyt renamed to dependency_support/com_google_skywater_pdk/sky130_fd_sc_hd/sky130hd.lyt

@@ -71,7 +71,7 @@
    <macro-resolution-mode>default</macro-resolution-mode>
    <separate-groups>false</separate-groups>
    <map-file/>
-   <lef-files>klayout_tech.lef</lef-files>
+   <lef-files>merged.lef</lef-files>
   </lefdef>
   <dxf>
    <dbu>0.001</dbu>

dependency_support/org_theopenroadproject_asap7/BUILD

@@ -16,4 +16,5 @@ exports_files([
     "tracks.tcl",
     "rc_script.tcl",
     "pdn_config.pdn",
+    "asap7.lyt", # Imported from OpenROAD-flow-scripts on 24.07.2023 at 6ec980e1d49a1a8dcdd1e25ed81255b4bb8285c8 from: https://github.com/The-OpenROAD-Project/OpenROAD-flow-scripts/blob/6ec980e1d49a1a8dcdd1e25ed81255b4bb8285c8/flow/platforms/asap7/KLayout/asap7.lyt
 ])

dependency_support/org_theopenroadproject_asap7/asap7.lyt

@@ -0,0 +1,135 @@
+<?xml version="1.0" encoding="utf-8"?>
+<technology>
+ <name>ASAP 7</name>
+ <description>ASAP 7 nm Technology</description>
+ <dbu>0.00025</dbu>
+ <base-path>./platforms/asap7/KLayout/</base-path>
+ <original-base-path>.klayout/tech/asap7/</original-base-path>
+ <layer-properties_file>asap7.lyp</layer-properties_file>
+ <add-other-layers>true</add-other-layers>
+ <reader-options>
+  <gds2>
+   <box-mode>1</box-mode>
+   <allow-big-records>true</allow-big-records>
+   <allow-multi-xy-records>true</allow-multi-xy-records>
+  </gds2>
+  <common>
+   <create-other-layers>true</create-other-layers>
+   <layer-map>layer_map()</layer-map>
+   <enable-properties>true</enable-properties>
+   <enable-text-objects>true</enable-text-objects>
+  </common>
+  <lefdef>
+   <read-all-layers>true</read-all-layers>
+   <layer-map>layer_map('BOUNDARY : 100/0';'M1 : 19/0';'M1.LABEL : 19/2';'M1.PIN : 19/251';'M2 : 20/0';'M2.LABEL : 20/2';'M2.PIN : 20/251';'M3 : 30/0';'M3.LABEL : 30/2';'M3.PIN : 30/251';'M4 : 40/0';'M4.LABEL : 40/2';'M4.PIN : 40/251';'M5 : 50/0';'M5.LABEL : 50/2';'M5.PIN : 50/251';'M6 : 60/0';'M6.LABEL : 60/2';'M6.PIN : 60/251';'M7 : 70/0';'M7.LABEL : 70/2';'M7.PIN : 70/251';'M8 : 80/0';'M8.LABEL : 80/2';'M8.PIN : 80/251';'M9 : 90/0';'M9.LABEL : 90/2';'M9.PIN : 90/251';'V0 : 18/0';'V0.LABEL : 29/0';'V1 : 21/0';'V2 : 25/0';'V3 : 35/0';'V4 : 45/0';'V5 : 55/0';'V6 : 65/0';'V7 : 75/0';'V8 : 85/0';'V9 : 95/0';'GATE : 7/0';'COMP : 101/0';'DIEAREA : 235/0')</layer-map>
+   <dbu>0.00025</dbu>
+   <produce-net-names>true</produce-net-names>
+   <net-property-name>#1</net-property-name>
+   <produce-inst-names>true</produce-inst-names>
+   <inst-property-name>#1</inst-property-name>
+   <produce-cell-outlines>true</produce-cell-outlines>
+   <cell-outline-layer>DIEAREA</cell-outline-layer>
+   <produce-placement-blockages>true</produce-placement-blockages>
+   <placement-blockage-layer>PLACEMENT_BLK</placement-blockage-layer>
+   <produce-regions>true</produce-regions>
+   <region-layer>REGIONS</region-layer>
+   <produce-via-geometry>true</produce-via-geometry>
+   <via-geometry-suffix/>
+   <via-geometry-datatype>0</via-geometry-datatype>
+   <produce-pins>true</produce-pins>
+   <pins-suffix>.PIN</pins-suffix>
+   <pins-datatype>251</pins-datatype>
+   <produce-obstructions>false</produce-obstructions>
+   <produce-blockages>false</produce-blockages>
+   <produce-labels>true</produce-labels>
+   <labels-suffix>.LABEL</labels-suffix>
+   <labels-datatype>2</labels-datatype>
+   <produce-routing>true</produce-routing>
+   <routing-suffix/>
+   <routing-datatype>0</routing-datatype>
+   <lef-files>./platforms/asap7/lef/asap7_tech_1x_201209.lef</lef-files>
+  </lefdef>
+  <dxf>
+   <dbu>0.00025</dbu>
+   <unit>1</unit>
+   <text-scaling>100</text-scaling>
+   <circle-points>100</circle-points>
+   <circle-accuracy>0</circle-accuracy>
+   <contour-accuracy>0</contour-accuracy>
+   <polyline-mode>0</polyline-mode>
+   <render-texts-as-polygons>false</render-texts-as-polygons>
+   <keep-other-cells>false</keep-other-cells>
+   <keep-layer-names>false</keep-layer-names>
+   <create-other-layers>true</create-other-layers>
+   <layer-map>layer_map()</layer-map>
+  </dxf>
+  <cif>
+   <wire-mode>0</wire-mode>
+   <dbu>0.00025</dbu>
+   <layer-map>layer_map()</layer-map>
+   <create-other-layers>true</create-other-layers>
+   <keep-layer-names>false</keep-layer-names>
+  </cif>
+ </reader-options>
+ <writer-options>
+  <gds2>
+   <write-timestamps>true</write-timestamps>
+   <write-cell-properties>false</write-cell-properties>
+   <write-file-properties>false</write-file-properties>
+   <no-zero-length-paths>false</no-zero-length-paths>
+   <multi-xy-records>false</multi-xy-records>
+   <max-vertex-count>8000</max-vertex-count>
+   <max-cellname-length>32000</max-cellname-length>
+   <libname>LIB</libname>
+  </gds2>
+  <oasis>
+   <compression-level>2</compression-level>
+   <write-cblocks>false</write-cblocks>
+   <strict-mode>false</strict-mode>
+   <write-std-properties>1</write-std-properties>
+   <subst-char>*</subst-char>
+   <permissive>false</permissive>
+  </oasis>
+  <cif>
+   <polygon-mode>0</polygon-mode>
+  </cif>
+  <cif>
+   <dummy-calls>false</dummy-calls>
+   <blank-separator>false</blank-separator>
+  </cif>
+ </writer-options>
+ <connectivity>
+  <connection>DrainSource,V0,M1</connection>
+  <connection>poly,V0,M1</connection>
+  <connection>M1,V1,M2</connection>
+  <connection>M2,V2,M3</connection>
+  <connection>M3,V3,M4</connection>
+  <connection>M4,V4,M5</connection>
+  <connection>M5,V5,M6</connection>
+  <connection>M6,V6,M7</connection>
+  <connection>M7,V7,M8</connection>
+  <connection>M8,V8,M9</connection>
+  <connection>M9,V9,Pad</connection>
+  <symbols>DrainSource='1/0 - 9/0'</symbols>
+  <symbols>poly='9/0'</symbols>
+  <symbols>contact='18/0'</symbols>
+  <symbols>M1='19/0'</symbols>
+  <symbols>V1='21/0'</symbols>
+  <symbols>M2='20/0'</symbols>
+  <symbols>V2='25/0'</symbols>
+  <symbols>M3='30/0'</symbols>
+  <symbols>V3='35/0'</symbols>
+  <symbols>M4='40/0'</symbols>
+  <symbols>V4='45/0'</symbols>
+  <symbols>M5='50/0'</symbols>
+  <symbols>V5='55/0'</symbols>
+  <symbols>M6='60/0'</symbols>
+  <symbols>V6='65/0'</symbols>
+  <symbols>M7='70/0'</symbols>
+  <symbols>V7='75/0'</symbols>
+  <symbols>M8='80/0'</symbols>
+  <symbols>V8='85/0'</symbols>
+  <symbols>M9='90/0'</symbols>
+  <symbols>V9='95/0'</symbols>
+ </connectivity>
+</technology>

dependency_support/org_theopenroadproject_asap7/bundled.BUILD.bazel

@@ -59,6 +59,7 @@ open_road_pdk_configuration(
         "M7": "0.5",
     },
     global_routing_signal_layers = "M2-M7",
+    klayout_tech_file = "@rules_hdl//dependency_support/org_theopenroadproject_asap7:asap7.lyt",
     pdn_config = "@rules_hdl//dependency_support/org_theopenroadproject_asap7:pdn_config.pdn",
     pin_horizontal_metal_layer = "M4",
     pin_vertical_metal_layer = "M5",

gds_write/build_defs.bzl

@@ -16,8 +16,13 @@
 
 load("//place_and_route:open_road.bzl", "OpenRoadInfo")
 load("//synthesis:build_defs.bzl", "SynthesisInfo")
+load("@rules_hdl//pdk:open_road_configuration.bzl", "assert_has_open_road_configuration", "get_open_road_configuration")
 
 def _gds_write_impl(ctx):
+    # Throws an error if there is no OpenROAD configuration
+    assert_has_open_road_configuration(ctx.attr.implemented_rtl[SynthesisInfo])
+    open_road_configuration = get_open_road_configuration(ctx.attr.implemented_rtl[SynthesisInfo])
+
     final_gds = ctx.actions.declare_file("{}.gds".format(ctx.attr.name))
 
     # KLayout technology file
@@ -48,6 +53,10 @@ def _gds_write_impl(ctx):
     if ctx.attr.gds_allow_empty:
         gds_allow_empty_args = " --gds-allow-empty {}".format(ctx.attr.gds_allow_empty)
 
+    klayout_lyt = open_road_configuration.klayout_tech_file.files.to_list()[0]
+    if ctx.file.klayout_lyt:
+        klayout_lyt = ctx.file.klayout_lyt
+
     ctx.actions.run_shell(
         outputs = [
             final_gds,
@@ -59,7 +68,7 @@ def _gds_write_impl(ctx):
             platform_gds +
             [
                 ctx.attr.implemented_rtl[OpenRoadInfo].routed_def,
-                ctx.file.klayout_lyt,
+                klayout_lyt,
                 tech_lef,
             ],
         ),
@@ -68,7 +77,7 @@ def _gds_write_impl(ctx):
                   " --input-def {}".format(ctx.attr.implemented_rtl[OpenRoadInfo].routed_def.path) +
                   lef_args +
                   gds_args +
-                  " --tech-file {}".format(ctx.file.klayout_lyt.path) +
+                  " --tech-file {}".format(klayout_lyt.path) +
                   gds_allow_empty_args +
                   " --out {}".format(final_gds.path),
         tools = depset([ctx.executable._gds_write]),
@@ -80,7 +89,7 @@ gds_write = rule(
     implementation = _gds_write_impl,
     attrs = {
         "implemented_rtl": attr.label(mandatory = True, providers = [OpenRoadInfo, SynthesisInfo]),
-        "klayout_lyt": attr.label(mandatory = True, allow_single_file = True),
+        "klayout_lyt": attr.label(allow_single_file = True),
         "input_lef": attr.label_list(allow_files = True),
         "input_gds": attr.label_list(allow_files = True),
         "gds_allow_empty": attr.string(),

pdk/open_road_configuration.bzl

@@ -42,6 +42,7 @@ OpenRoadPdkInfo = provider(
         "placement_padding_tcl": "TCL Script for handling the placement padding of cells",
         "detailed_routing_configuration": "optional detailed routing configuration",
         "density_fill_config": "optional path to file with metal fill configuration",
+        "klayout_tech_file": "KLayout technology file for GDS write",
     },
 )
 
@@ -78,6 +79,7 @@ def _open_road_pdk_configuration_impl(ctx):
             placement_padding_tcl = ctx.file.placement_padding_tcl,
             detailed_routing_configuration = ctx.attr.detailed_routing_configuration,
             density_fill_config = ctx.attr.density_fill_config,
+            klayout_tech_file = ctx.attr.klayout_tech_file,
         ),
     ]
 
@@ -109,6 +111,7 @@ open_road_pdk_configuration = rule(
         "placement_padding_tcl": attr.label(allow_single_file = True, doc = "TCL Script for handling the placement padding of cells"),
         "detailed_routing_configuration": attr.label(providers = [DetailedRoutingInfo]),
         "density_fill_config": attr.label(allow_single_file = True),
+        "klayout_tech_file": attr.label(mandatory = True, allow_single_file = True),
     },
 )
 

synthesis/tests/BUILD

@@ -46,7 +46,6 @@ place_and_route(
 gds_write(
     name = "counter_asic",
     implemented_rtl = ":counter_place_and_route",
-    klayout_lyt = "klayout.lyt",
 )
 
 run_opensta(