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db07ab174e
This improves portability across different unix-like operating systems by using bash from the PATH, instead of bash from a hardcoded location. Signed-off-by: Harry Callahan <hcallahan@lowrisc.org>
80 lines
2.8 KiB
Python
Executable file
80 lines
2.8 KiB
Python
Executable file
#!/usr/bin/env python3
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# Copyright lowRISC contributors.
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# Licensed under the Apache License, Version 2.0, see LICENSE for details.
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# SPDX-License-Identifier: Apache-2.0
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# Parse a yosys area report and give a kGE equivalient
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import argparse
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def read_lib(lib_file_path, ref_cell):
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with open(lib_file_path, 'r') as f:
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lib_file = f.readlines()
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cell_dict = {}
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weighted_dict = {}
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cell_name = None
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for line_idx, line in enumerate(lib_file):
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if line.startswith(' cell ('):
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if cell_name is not None:
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raise RuntimeError('{}:{} Found cell while searching for area'
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.format(lib_file_path, line_idx + 1))
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cell_name = line.split()[1].strip('()')
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elif line.startswith('\tarea'):
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if cell_name is None:
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raise RuntimeError('{}:{} Found area while searching for cell'
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.format(lib_file_path, line_idx + 1))
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try:
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cell_area = line.split()[2].strip(';')
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cell_dict[cell_name] = float(cell_area)
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cell_name = None
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except (IndexError, ValueError):
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raise RuntimeError('{}:{} Area declaration misformatted'
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.format(lib_file_path, line_idx + 1))
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if ref_cell not in cell_dict:
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raise RuntimeError('Specified reference cell: {} was not found in '
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'library: {}' .format(ref_cell, lib_file_path))
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for cell in cell_dict:
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weighted_dict[cell] = cell_dict[cell] / cell_dict[ref_cell]
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return weighted_dict
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def get_kge(report_path, weighted_dict):
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with open(report_path, 'r') as f:
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report = f.readlines()
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ge = 0.0
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for line_idx, line in enumerate(report):
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data = line.split()
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if not data:
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continue
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weight = weighted_dict.get(data[0])
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if weight is not None:
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try:
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ge += float(data[1]) * weight
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except (IndexError, ValueError):
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raise RuntimeError('{}:{} Cell {} matched but was misformatted'
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.format(report_path, line_idx + 1, data[0]))
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print("Area in kGE = ", round(ge/1000, 2))
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def main():
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arg_parser = argparse.ArgumentParser(
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description="""Calculate kGE from a Yosys report and LIB file""")
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arg_parser.add_argument('lib_file_path', help='Path to the LIB file')
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arg_parser.add_argument('report_path', help='Path to the report')
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arg_parser.add_argument('--cell', help='Reference cell (default:NAND2_X1)',
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default='NAND2_X1')
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args = arg_parser.parse_args()
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weighted_dict = read_lib(args.lib_file_path, args.cell)
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get_kge(args.report_path, weighted_dict)
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if __name__ == "__main__":
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main()
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