build.py

#!/usr/bin/env python3

#
# OpenLane2 build script to harden the tt_top macro inside
# the classic user_project_wrapper
#
# Copyright (c) 2023 Sylvain Munaut <tnt@246tNt.com>
# SPDX-License-Identifier: Apache-2.0
#

import argparse
import json
import os
import re
import os.path
from pathlib import Path
from typing import List, Tuple
from rename_yosys_cells import RenameYosysCells

from openlane.common import get_opdks_rev
from openlane.flows.misc import OpenInKLayout
from openlane.flows.classic import Classic
from openlane.steps.odb import OdbpyStep
from openlane.steps import OpenROAD, Step, ViewsUpdate, MetricsUpdate
from openlane.steps import Yosys, YosysStep
from openlane.state import State
import volare

class ProjectFlow(Classic):
  pass

if __name__ == '__main__':
	# Argument processing
	parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter)
	parser.add_argument("--open-in-klayout", action="store_true", help="Open last run in KLayout")

   # Insert our custom step after the PDN generation
	ProjectFlow.Steps.insert(ProjectFlow.Steps.index(Yosys.Synthesis) + 1, RenameYosysCells)

	args = parser.parse_args()
	config = vars(args)

	pdk_root =  volare.get_volare_home(os.getenv('PDK_ROOT'))
	volare.enable(pdk_root, "sky130", get_opdks_rev())

	# Load fixed required config for UPW
	flow_cfg = json.loads(open('config.json', 'r').read())

	# Run flow
	flow_class = OpenInKLayout if args.open_in_klayout else ProjectFlow
	flow = flow_class(
		flow_cfg,
		design_dir = ".",
		pdk_root   = pdk_root,
		pdk        = "sky130A",
	)

	flow.start(tag = "wokwi")