Adds ASAP7 support to bazel rules hdl.

This commit adds the required PDK files, and some utilities to make
things work better with the system we have setup.

__init__.py

@@ -0,0 +1 @@
+#HDL

dependency_support/dependency_support.bzl

@@ -53,6 +53,7 @@ load("@rules_hdl//dependency_support/org_sourceware_bzip2:org_sourceware_bzip2.b
 load("@rules_hdl//dependency_support/org_sourceware_libffi:org_sourceware_libffi.bzl", "org_sourceware_libffi")
 load("@rules_hdl//dependency_support/org_swig:org_swig.bzl", "org_swig")
 load("@rules_hdl//dependency_support/org_theopenroadproject:org_theopenroadproject.bzl", "org_theopenroadproject")
+load("@rules_hdl//dependency_support/org_theopenroadproject_asap7:org_theopenroadproject_asap7.bzl", "org_theopenroadproject_asap7")
 load("@rules_hdl//dependency_support/org_tuxfamily_eigen:org_tuxfamily_eigen.bzl", "org_tuxfamily_eigen")
 load("@rules_hdl//dependency_support/pybind11:pybind11.bzl", "pybind11")
 load("@rules_hdl//dependency_support/tk_tcl:tk_tcl.bzl", "tk_tcl")
@@ -94,6 +95,7 @@ def dependency_support():
     org_sourceware_libffi()
     org_swig()
     org_theopenroadproject()
+    org_theopenroadproject_asap7()
     org_tuxfamily_eigen()
     pybind11()
     tk_tcl()

dependency_support/org_theopenroadproject_asap7/BUILD

@@ -0,0 +1,15 @@
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+exports_files(["tracks.tcl", "rc_script.tcl", "pdn_config.pdn"])

dependency_support/org_theopenroadproject_asap7/asap7.bzl

@@ -0,0 +1,80 @@
+"""ASAP7 PDK rules."""
+
+load("@rules_hdl//pdk:build_defs.bzl", "CornerInfo", "StandardCellInfo")
+load("@rules_hdl//pdk:open_road_configuration.bzl", "OpenRoadPdkInfo")
+
+def _asap7_cell_library_impl(ctx):
+    liberty_files = [file for file in ctx.files.srcs if file.extension == "gz"]
+    liberty_files = [file for file in liberty_files if "_{}_".format(ctx.attr.default_corner_delay_model) in file.basename]
+    liberty_files = [file for file in liberty_files if "SRAM" not in file.basename]
+    liberty_files = [file for file in liberty_files if ctx.attr.cell_type in file.basename]
+
+    uncompressed_files = []
+    for file in liberty_files:
+        uncompressed_file = ctx.actions.declare_file(file.basename[:-len(".gz")])
+        ctx.actions.run_shell(
+            outputs = [
+                uncompressed_file,
+            ],
+            inputs = [
+                file,
+            ],
+            command = "gunzip --to-stdout {compressed_file} > {uncompressed_file}".format(
+                compressed_file = file.path,
+                uncompressed_file = uncompressed_file.path,
+            ),
+        )
+
+        uncompressed_files.append(uncompressed_file)
+
+    default_corner_libraries = [file for file in uncompressed_files if "_{}_".format(ctx.attr.default_corner_swing) in file.basename]
+
+    default_output_liberty = ctx.actions.declare_file("{}_{}.lib".format(ctx.attr.name, ctx.attr.default_corner_swing))
+
+    args = ctx.actions.args()
+    for file in default_corner_libraries:
+        args.add("--liberty_files", file)
+    args.add("--output", default_output_liberty)
+
+    ctx.actions.run(
+        outputs = [default_output_liberty],
+        inputs = default_corner_libraries,
+        arguments = [args],
+        executable = ctx.executable._combine_liberty,
+    )
+
+    open_road_configuration = None
+    if ctx.attr.openroad_configuration:
+        open_road_configuration = ctx.attr.openroad_configuration[OpenRoadPdkInfo]
+
+    return [
+        DefaultInfo(files = depset([default_output_liberty] + default_corner_libraries)),
+        StandardCellInfo(
+            corners = [],
+            cell_lef_definitions = [ctx.file.cell_lef],
+            tech_lef = ctx.file.tech_lef,
+            default_corner = CornerInfo(
+                liberty = default_output_liberty,
+            ),
+            open_road_configuration = open_road_configuration,
+        ),
+    ]
+
+asap7_cell_library = rule(
+    implementation = _asap7_cell_library_impl,
+    attrs = {
+        "srcs": attr.label_list(allow_files = True),
+        "tech_lef": attr.label(allow_single_file = True, mandatory = True, doc = "The tech lef file for these standard cells"),
+        "default_corner_swing": attr.string(mandatory = True, values = ["SS", "FF", "TT"]),
+        "default_corner_delay_model": attr.string(mandatory = True, values = ["ccs", "ccsn", "ccsa"]),
+        "cell_type": attr.string(mandatory = True, values = ["RVT", "LVT", "SLVT"]),
+        #TODO(b/212480812): Support multiple VTs in a single design.
+        "openroad_configuration": attr.label(providers = [OpenRoadPdkInfo]),
+        "cell_lef": attr.label(allow_single_file = True, mandatory = True, doc = "The lef file for the standard cells"),
+        "_combine_liberty": attr.label(
+            default = Label("@rules_hdl//pdk/liberty:combine_liberty"),
+            executable = True,
+            cfg = "exec",
+        ),
+    },
+)

dependency_support/org_theopenroadproject_asap7/bundled.BUILD.bazel

@@ -0,0 +1,73 @@
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Arizona State University 7nm PDK"""
+
+load("@rules_hdl//pdk:open_road_configuration.bzl", "open_road_pdk_configuration")
+load("@rules_hdl//dependency_support/org_theopenroadproject_asap7:asap7.bzl", "asap7_cell_library")
+
+asap7_cell_library(
+    name = "asap7_rvt_1x",
+    srcs = glob(["asap7sc7p5t_27/LIB/CCS/*.lib.gz"]),
+    cell_lef = "asap7sc7p5t_27/LEF/scaled/asap7sc7p5t_27_R_4x_201211.lef",
+    cell_type = "RVT",
+    default_corner_delay_model = "ccs",
+    default_corner_swing = "SS",
+    openroad_configuration = ":open_road_asap7_1x",
+    tech_lef = "asap7sc7p5t_27/techlef_misc/asap7_tech_4x_201209.lef",
+    visibility = [
+        "//visibility:public",
+    ]
+)
+
+open_road_pdk_configuration(
+    name = "open_road_asap7_1x",
+    cell_site = "asap7sc7p5t",
+    cts_buffer_cell = "BUFx4_ASAP7_75t_R",
+    do_not_use_cell_list = [
+        "*x1_ASAP7*",
+        "*x1p*_ASAP7*",
+        "*xp*_ASAP7*",
+        "SDF*",
+        "ICG*",
+        "DFFH*",
+    ],
+    endcap_cell = "TAPCELL_ASAP7_75t_R",
+    fill_cells = [
+        "FILLERxp5_ASAP7_75t_R",
+    ],
+    global_placement_cell_pad = 2,
+    global_routing_clock_layers = "M2-M7",
+    global_routing_layer_adjustments = {
+        "M2": "0.5",
+        "M3": "0.5",
+        "M4": "0.5",
+        "M5": "0.5",
+        "M6": "0.5",
+        "M7": "0.5",
+    },
+    global_routing_signal_layers = "M2-M7",
+    pdn_config = "@rules_hdl//dependency_support/org_theopenroadproject_asap7:pdn_config.pdn",
+    pin_horizontal_metal_layer = "M4",
+    pin_vertical_metal_layer = "M5",
+    rc_script_configuration = "@rules_hdl//dependency_support/org_theopenroadproject_asap7:rc_script.tcl",
+    tap_cell = "TAPCELL_ASAP7_75t_R",
+    tapcell_distance = 25 * 4,  # We are using the by 4 variants of these cells.
+    tie_high_port = "TIEHIx1_ASAP7_75t_R/H",
+    tie_low_port = "TIELOx1_ASAP7_75t_R/L",
+    tie_separation = 0,
+    tracks_file = "@rules_hdl//dependency_support/org_theopenroadproject_asap7:tracks.tcl",
+    wire_rc_clock_metal_layer = "M5",
+    wire_rc_signal_metal_layer = "M2",
+)

dependency_support/org_theopenroadproject_asap7/org_theopenroadproject_asap7.bzl

@@ -0,0 +1,30 @@
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Registers Bazel workspaces for the Boost C++ libraries."""
+
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+load("@bazel_tools//tools/build_defs/repo:utils.bzl", "maybe")
+
+def org_theopenroadproject_asap7():
+    maybe(
+        http_archive,
+        name = "org_theopenroadproject_asap7",
+        urls = [
+            "https://github.com/The-OpenROAD-Project/asap7/archive/157c92cfd2567a98c5f794fb10c2dd0713516374.tar.gz",
+        ],
+        strip_prefix = "asap7-157c92cfd2567a98c5f794fb10c2dd0713516374",
+        sha256 = "bfa76681ee0f1b109cb73415728cf3d7508ce0be88ac491962e8a0016033a683",
+        build_file = Label("@rules_hdl//dependency_support/org_theopenroadproject_asap7:bundled.BUILD.bazel"),
+    )

dependency_support/org_theopenroadproject_asap7/pdn_config.pdn

@@ -0,0 +1,32 @@
+# Floorplan information - core boundary coordinates, std. cell row height,
+
+set ::halo 2
+
+# POWER or GROUND #Std. cell rails starting with power or ground rails at the bottom of the core area
+set ::rails_start_with "POWER" ;
+
+# POWER or GROUND #Upper metal stripes starting with power or ground rails at the left/bottom of the core area
+set ::stripes_start_with "POWER" ;
+
+# Power nets
+set ::power_nets "VDD"
+set ::ground_nets "VSS"
+
+pdngen::specify_grid stdcell {
+  name top
+
+  rails {
+      M1 {width 0.072 offset 0}
+      M2 {width 0.072 offset 0}
+  }
+
+  straps {
+      M5 {width 0.216  pitch 47.52 spacing 0.288 offset 1.188}
+      M6 {width 0.544  pitch 48 spacing 0.384 offset 2.556}
+  }
+
+  connect {
+      {M5 M2}
+  }
+
+}

dependency_support/org_theopenroadproject_asap7/rc_script.tcl

@@ -0,0 +1,35 @@
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set_layer_rc -layer M1 -capacitance 6.33956E-02 -resistance 1.3889e-01
+set_layer_rc -layer M2 -capacitance 8.02750E-02 -resistance 2.4222e-02
+set_layer_rc -layer M3 -capacitance 1.23273E-01 -resistance 2.4222e-02
+set_layer_rc -layer M4 -capacitance 1.29902E-01 -resistance 1.6778e-02
+set_layer_rc -layer M5 -capacitance 1.19552E-01 -resistance 1.4677e-02
+set_layer_rc -layer M6 -capacitance 1.23114E-01 -resistance 1.0371e-02
+set_layer_rc -layer M7 -capacitance 1.05408E-01 -resistance 9.6720e-03
+set_layer_rc -layer M8 -capacitance 1.1822e-01 -resistance 7.4310e-03
+set_layer_rc -layer M9 -capacitance 1.3497e-01 -resistance 6.8740e-03
+
+set_layer_rc -via V1 -resistance 1.00E-02
+set_layer_rc -via V2 -resistance 1.00E-02
+set_layer_rc -via V3 -resistance 1.00E-02
+set_layer_rc -via V4 -resistance 1.00E-02
+set_layer_rc -via V5 -resistance 1.00E-02
+set_layer_rc -via V6 -resistance 1.00E-02
+set_layer_rc -via V7 -resistance 1.00E-02
+set_layer_rc -via V8 -resistance 1.00E-02
+set_layer_rc -via V9 -resistance 1.00E-02
+
+set_wire_rc -layer M3

dependency_support/org_theopenroadproject_asap7/tracks.tcl

@@ -0,0 +1,33 @@
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.set multiplier 4
+
+make_tracks Pad -x_offset [expr 0.116 * $multiplier] -x_pitch [expr 0.08  * $multiplier] -y_offset [expr 0.116 * $multiplier] -y_pitch [expr 0.08 * $multiplier]
+make_tracks M9  -x_offset [expr 0.116 * $multiplier] -x_pitch [expr 0.08  * $multiplier] -y_offset [expr 0.116 * $multiplier] -y_pitch [expr 0.08 * $multiplier]
+make_tracks M8  -x_offset [expr 0.116 * $multiplier] -x_pitch [expr 0.08  * $multiplier] -y_offset [expr 0.116 * $multiplier] -y_pitch [expr 0.08 * $multiplier]
+make_tracks M7  -x_offset [expr 0.016 * $multiplier] -x_pitch [expr 0.064 * $multiplier] -y_offset [expr 0.016 * $multiplier] -y_pitch [expr 0.064 * $multiplier]
+make_tracks M6  -x_offset [expr 0.012 * $multiplier] -x_pitch [expr 0.048 * $multiplier] -y_offset [expr 0.016 * $multiplier] -y_pitch [expr 0.064 * $multiplier]
+make_tracks M5  -x_offset [expr 0.012 * $multiplier] -x_pitch [expr 0.048 * $multiplier] -y_offset [expr 0.012 * $multiplier] -y_pitch [expr 0.048 * $multiplier]
+make_tracks M4  -x_offset [expr 0.009 * $multiplier] -x_pitch [expr 0.036 * $multiplier] -y_offset [expr 0.012 * $multiplier] -y_pitch [expr 0.048 * $multiplier]
+make_tracks M3  -x_offset [expr 0.009 * $multiplier] -x_pitch [expr 0.036 * $multiplier] -y_offset [expr 0.009 * $multiplier] -y_pitch [expr 0.036 * $multiplier]
+
+# Creating multiple sub tracks for metal M2 for off grid routing purposes.
+make_tracks M2  -x_offset [expr 0.009 * $multiplier] -x_pitch [expr 0.036 * $multiplier] -y_offset [expr (0.045 - 0.000) * $multiplier] -y_pitch [expr 0.270 * $multiplier]
+make_tracks M2  -x_offset [expr 0.009 * $multiplier] -x_pitch [expr 0.036 * $multiplier] -y_offset [expr (0.081 - 0.000) * $multiplier] -y_pitch [expr 0.270 * $multiplier]
+make_tracks M2  -x_offset [expr 0.009 * $multiplier] -x_pitch [expr 0.036 * $multiplier] -y_offset [expr (0.117 - 0.000) * $multiplier] -y_pitch [expr 0.270 * $multiplier]
+make_tracks M2  -x_offset [expr 0.009 * $multiplier] -x_pitch [expr 0.036 * $multiplier] -y_offset [expr (0.153 - 0.000) * $multiplier] -y_pitch [expr 0.270 * $multiplier]
+make_tracks M2  -x_offset [expr 0.009 * $multiplier] -x_pitch [expr 0.036 * $multiplier] -y_offset [expr (0.189 - 0.000) * $multiplier] -y_pitch [expr 0.270 * $multiplier]
+make_tracks M2  -x_offset [expr 0.009 * $multiplier] -x_pitch [expr 0.036 * $multiplier] -y_offset [expr (0.225 - 0.000) * $multiplier] -y_pitch [expr 0.270 * $multiplier]
+make_tracks M2  -x_offset [expr 0.009 * $multiplier] -x_pitch [expr 0.036 * $multiplier] -y_offset [expr (0.270 - 0.000) * $multiplier] -y_pitch [expr 0.270 * $multiplier]
+
+make_tracks M1  -x_offset [expr 0.009 * $multiplier] -x_pitch [expr 0.036 * $multiplier] -y_offset [expr 0.009 * $multiplier] -y_pitch [expr 0.036 * $multiplier]

dependency_support/pip_requirements.txt

@@ -1,3 +1,4 @@
 dataclasses-json==0.5.2
 jwt==1.1.0
 requests==2.25.1
+absl-py==1.0.0

pdk/__init__.py

@@ -0,0 +1,13 @@
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.