++

openlane/common/misc.py

@@ -11,28 +11,21 @@
 # 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.
+import fnmatch
+import glob
 import os
+import pathlib
 import re
-import glob
 import typing
-import fnmatch
-import pathlib
 import unicodedata
 from math import inf
-from typing import (
-    Any,
-    Generator,
-    Iterable,
-    List,
-    TypeVar,
-    Optional,
-    SupportsFloat,
-    Union,
-)
+from typing import (Any, Generator, Iterable, List, Optional, SupportsFloat,
+                    TypeVar, Union)
+
 import httpx
 
-from .types import AnyPath, Path
 from ..__version__ import __version__
+from .types import AnyPath, Path
 
 T = TypeVar("T")
 

openlane/config/pdk_compat.py

@@ -219,6 +219,34 @@ def process_sta(key: str):
                 "nom_ss_100C_1v60",
                 "nom_ff_n40C_1v95",
             ]
+            ## correlateRC.py gcd,ibex,aes,jpeg,chameleon,riscv32i,chameleon_hier
+            ## cap units pf/um
+            # set_layer_rc -layer li1 -capacitance 1.499e-04 -resistance 7.176e-02
+            # set_layer_rc -layer met1 -capacitance 1.72375E-04 -resistance 8.929e-04
+            # set_layer_rc -layer met2 -capacitance 1.36233E-04 -resistance 8.929e-04
+            # set_layer_rc -layer met3 -capacitance 2.14962E-04 -resistance 1.567e-04
+            # set_layer_rc -layer met4 -capacitance 1.48128E-04 -resistance 1.567e-04
+            # set_layer_rc -layer met5 -capacitance 1.54087E-04 -resistance 1.781e-05
+            ## end correlate
+            #
+            # set_layer_rc -via mcon -resistance 9.249146E-3
+            # set_layer_rc -via via -resistance 4.5E-3
+            # set_layer_rc -via via2 -resistance 3.368786E-3
+            # set_layer_rc -via via3 -resistance 0.376635E-3
+            # set_layer_rc -via via4 -resistance 0.00580E-3
+            #
+            # set_wire_rc -signal -layer met1
+            # set_wire_rc -clock -layer met3
+            new["LAYERS_RC"] = {
+                "*": {
+                    "li1": {"res": 7.176e-02, "cap": 1.499e-04},
+                    "met1": {"res": 8.929e-04, "cap": 1.72375e-04},
+                    "met2": {"res": 8.929e-04, "cap": 1.36233e-04},
+                    "met3": {"res": 1.567e-04, "cap": 2.14962e-04},
+                    "met4": {"res": 1.567e-04, "cap": 1.54087e-04},
+                    "met5": {"res": 1.781e-05, "cap": 1.54087e-04},
+                }
+            }
         elif new["PDK"].startswith("gf180mcu"):
             new["STA_CORNERS"] = [
                 "nom_tt_025C_5v00",

openlane/scripts/openroad/common/io.tcl

@@ -240,10 +240,6 @@ proc read_spefs {} {
 }
 
 proc read_pnr_libs {args} {
-    if { [get_libs -quiet *] != {} } {
-        exit 1
-    }
-
     set i "0"
     set tc_key "_LIB_CORNER_$i"
     while { [info exists ::env($tc_key)] } {

openlane/steps/openroad.py

@@ -32,37 +32,18 @@
 import rich.table
 import yaml
 
-from ..common import (
-    Path,
-    TclUtils,
-    _get_process_limit,
-    aggregate_metrics,
-    get_script_dir,
-    mkdirp,
-    process_list_file,
-)
+from ..common import (Path, Filter, TclUtils, _get_process_limit, aggregate_metrics,
+                      get_script_dir, mkdirp, process_list_file)
 from ..config import Macro, Variable
 from ..config.flow import option_variables
 from ..logging import console, debug, info, options, verbose
 from ..state import DesignFormat, State
-from .common_variables import (
-    dpl_variables,
-    grt_variables,
-    io_layer_variables,
-    pdn_variables,
-    routing_layer_variables,
-    rsz_variables,
-)
+from .common_variables import (dpl_variables, grt_variables,
+                               io_layer_variables, pdn_variables,
+                               routing_layer_variables, rsz_variables)
 from .openroad_alerts import OpenROADAlert, OpenROADOutputProcessor
-from .step import (
-    CompositeStep,
-    DefaultOutputProcessor,
-    MetricsUpdate,
-    Step,
-    StepError,
-    StepException,
-    ViewsUpdate,
-)
+from .step import (CompositeStep, DefaultOutputProcessor, MetricsUpdate, Step,
+                   StepError, StepException, ViewsUpdate)
 from .tclstep import TclStep
 
 EXAMPLE_INPUT = """
@@ -178,6 +159,12 @@ class OpenROADStep(TclStep):
             "A list of fully-qualified IPVT corners to use. Can be overriden by some steps",
             pdk=True,
         ),
+        Variable(
+            "LAYERS_RC",
+            Optional[Dict[str, Dict[str, Dict[str, Decimal]]]],
+            "Test",
+            pdk=True,
+        ),
         Variable(
             "PDN_CONNECT_MACROS_TO_GRID",
             bool,
@@ -279,6 +266,16 @@ def run(self, state_in, **kwargs) -> Tuple[ViewsUpdate, MetricsUpdate]:
         if "check" in kwargs:
             check = kwargs.pop("check")
 
+        layers_rc = self.config["LAYERS_RC"]
+        for corner_wildcard, metal_layers in layers_rc.items():
+            print(corner_wildcard, corners)
+            for corner in Filter(corner_wildcard).filter(corners):
+                for layer, rc in metal_layers.items():
+                    res = rc["res"]
+                    cap = rc["cap"]
+                    print(f"{corner} {layer} {res} {cap}")
+
+        exit()
         command = self.get_command()
 
         subprocess_result = self.run_subprocess(