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lefdef_to_odb.py
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lefdef_to_odb.py
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'''
This script generates OpenDB database from LEF/DEF
'''
import odb
import sys
import os
import re
design = sys.argv[1]
def_file = sys.argv[2]
output_dir = sys.argv[3]
work_dir = re.search(r'(/\S+/MacroPlacement)', os.getcwd()).group(1)
sys.path.append(f'{work_dir}/Flows/util')
from convert_odb2bookshelf import OdbToBookshelf
lef_dir = '../../../../../Enablements/NanGate45/lef'
lef_list = [f'{lef_dir}/NangateOpenCellLibrary.tech.lef',
f'{lef_dir}/NangateOpenCellLibrary.macro.mod.lef',
f'{lef_dir}/fakeram45_256x16.lef']
db = odb.dbDatabase.create()
for lef_file in lef_list:
odb.read_lef(db, lef_file)
odb.read_def(db, def_file)
chip = db.getChip()
tech = db.getTech()
libs = db.getLibs()
if chip is None:
exit("ERROR: READ DEF Failed")
if not os.path.exists(f'{output_dir}/RePlAce'):
os.makedirs(f'{output_dir}/RePlAce')
odb_file = f'{output_dir}/RePlAce/{design}.odb'
export_result = odb.write_db(db, odb_file)
if export_result != 1:
exit("ERROR: Export failed")
new_db = odb.dbDatabase.create()
odb.read_db(new_db, odb_file)
if new_db is None:
exit("ERROR: Import failed")
if odb.db_diff(db, new_db):
exit("ERROR: Difference found in exported and imported DB")
print(f"Successfully generated ODB format from LEF/DEF for {design}")
bs = OdbToBookshelf(
opendbpy=odb,
opendb=db,
cellPadding=0,
modeFormat="ISPD11",
layerCapacity='layeradjust_empty.tcl')
bs.WriteBookshelf(f'{design}_pad0_ISPD11')