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Modified hardcoded PDK path with the environment variable PDK_ROOT in sky130_mapped.py #325

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Modified hardcoded PDK path with the environment variable PDK_ROOT in sky130_mapped.py #325

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036847b
Modified hardcoded PDK path with the environment variable PDK_ROOT
iitkgpshubham Jun 25, 2024
f0a0ce5
Added EnvironmentError if pdk_root cannot be found
iitkgpshubham Jun 27, 2024
64a5362
Added EnvironmentError if pdk_root not found at expexted locations
iitkgpshubham Jun 27, 2024
3c672e7
Added EnvironmentError if pdk_root not found at expexted locations
iitkgpshubham Jun 27, 2024
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22 changes: 19 additions & 3 deletions openfasoc/generators/glayout/glayout/flow/pdk/sky130_mapped/sky130_mapped.py
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
"""
usage: from sky130_mapped import sky130_mapped_pdk
"""

import os
from ..mappedpdk import MappedPDK, SetupPDKFiles
from ..sky130_mapped.grules import grulesobj
from pathlib import Path
Expand Down Expand Up @@ -33,7 +33,22 @@
openfasoc_dir = Path(__file__).resolve().parent.parent.parent.parent.parent.parent.parent

klayout_drc_file = Path(__file__).resolve().parent / "sky130.lydrc"
pdk_root = Path('/usr/bin/miniconda3/share/pdk/')

paths_to_check = [
Path('$PDK_ROOT'),
Path("/usr/bin/miniconda3/share/pdk/"),
Path(f"/home/{os.getenv('LOGNAME')}/miniconda3/share/pdk/")
]
pdk_root = None
for path in paths_to_check:
# print(f"\n...Checking for PDK root at: {path}...")
if path.exists():
pdk_root = path
break

if not pdk_root:
raise EnvironmentError("PDK root not found in expected locations!")

lvs_schematic_ref_file = openfasoc_dir / "common" / "platforms" / "sky130hd" / "cdl" / "sky130_fd_sc_hd.spice"
magic_drc_file = pdk_root / "sky130A" / "libs.tech" / "magic" / "sky130A.magicrc"
lvs_setup_tcl_file = pdk_root / "sky130A" / "libs.tech" / "netgen" / "sky130A_setup.tcl"
Expand Down Expand Up @@ -65,4 +80,5 @@
# set the grid size
sky130_mapped_pdk.gds_write_settings.precision = 5*10**-9
sky130_mapped_pdk.cell_decorator_settings.cache=False
sky130_mapped_pdk.gds_write_settings.flatten_invalid_refs=False
sky130_mapped_pdk.gds_write_settings.flatten_invalid_refs=False