| #!/bin/env python3 |
| #------------------------------------------------------------------------- |
| # run_standard_drc.py --- A script to run magic in batch mode and apply |
| # full DRC checks on a layout. This inclues full DRC but excludes |
| # antenna and density checks, for which there are separate scripts. |
| # |
| # Usage: |
| # |
| # run_standard_drc.py <layout_name> |
| # |
| # Results: |
| # |
| # generates a file "<layout_name>_drc.txt" containing a human-readable |
| # list of the DRC errors. |
| # |
| #------------------------------------------------------------------------- |
| |
| import subprocess |
| import shutil |
| import glob |
| import sys |
| import os |
| import re |
| |
| # Work in progress |
| |
| def run_full_lvs(layout_file, layout_netlist_file, sch_netlist_file, report_file, layout_top_cell, sch_top_cell): |
| # un_full_lvs(layout_file=arguments[0], layout_netlist_file=arguments[1], sch_netlist=arguments[2], report_file=arguments[3], |
| # layout_top_cell=arguments[4], sch_top_cell=arguments[5]) |
| |
| sch_netlist_file = os.path.abspath(sch_netlist_file) |
| |
| is_gds = False |
| # Remove any extension from layout_name |
| layout_root = layout_file |
| layout_name = os.path.splitext(layout_root)[0] |
| layout_ext = os.path.splitext(layout_root)[1] |
| |
| if layout_ext != '.mag': |
| # Assume this is GDS |
| # Is the layout file in the current directory, or a full |
| # path, or is this a project directory? |
| |
| is_gds = True |
| if layout_name[0] == '/': |
| gdspath = os.path.split(layout_name)[0] |
| layout_name = os.path.split(layout_name)[1] |
| |
| else: |
| if not os.path.isfile(layout_root): |
| if not os.path.isfile('gds/' + layout_root): |
| print('Error: Cannot find GDS file ' + layout_root) |
| return |
| else: |
| gdspath = os.getcwd() + '/gds' |
| else: |
| gdspath = os.getcwd() |
| |
| if os.path.isdir('mag/'): |
| magpath = os.getcwd() + '/mag' |
| else: |
| magpath = os.getcwd() |
| |
| else: |
| # File is a .mag layout |
| # Is the layout file in the current directory, or a full |
| # path, or is this a project directory? |
| |
| if layout_name[0] == '/': |
| magpath = os.path.split(layout_name)[0] |
| layout_name = os.path.split(layout_name)[1] |
| |
| else: |
| if not os.path.isfile(layout_name + '.mag'): |
| if not os.path.isfile('mag/' + layout_name + '.mag'): |
| print('Error: Cannot find file ' + layout_name + '.mag') |
| return |
| else: |
| magpath = os.getcwd() + '/mag' |
| else: |
| magpath = os.getcwd() |
| |
| |
| # Check for presence of a .magicrc file, or else check for environment |
| # variable PDKPATH, or PDK_PATH |
| |
| myenv = os.environ.copy() |
| myenv['MAGTYPE'] = 'mag' |
| |
| if os.path.isfile(magpath + '/.magicrc'): |
| rcfile = magpath + '/.magicrc' |
| elif os.path.isfile(os.getcwd() + '/.magicrc'): |
| rcfile = os.getcwd() + '/.magicrc' |
| else: |
| if 'PDKPATH' in myenv: |
| rcpathroot = myenv['PDKPATH'] + '/libs.tech/magic' |
| rcfile = glob.glob(rcpathroot + '/*.magicrc')[0] |
| netgensetroot = myenv['PDKPATH'] + '/libs.tech/netgen' |
| netgenset = glob.glob(netgensetroot + '/sky130A_setup.tcl')[0] |
| elif 'PDK_PATH' in myenv: |
| rcpathroot = myenv['PDKPATH'] + '/libs.tech/magic' |
| rcfile = glob.glob(rcpathroot + '/*.magicrc')[0] |
| netgensetroot = myenv['PDKPATH'] + '/libs.tech/netgen' |
| netgenset = glob.glob(netgensetroot + '/sky130A_setup.tcl')[0] |
| else: |
| print('Error: Cannot get magic rcfile for the technology!') |
| return |
| |
| # Generate the parastic extraction Tcl script |
| |
| print('Evaluating parastic extraction for layout ' + layout_name) |
| print(magpath) |
| with open(magpath + '/run_magic_lvs.tcl', 'w') as ofile: |
| print('# run_magic_drc.tcl ---', file=ofile) |
| print('# batch script for running DRC', file=ofile) |
| print('', file=ofile) |
| print('crashbackups stop', file=ofile) |
| print('drc euclidean on', file=ofile) |
| print('drc style drc(full)', file=ofile) |
| print('drc on', file=ofile) |
| print('snap internal', file=ofile) |
| if is_gds: |
| print('gds flatglob *__example_*', file=ofile) |
| print('gds flatten true', file=ofile) |
| print('gds read ' + gdspath + '/' + layout_name, file=ofile) |
| print('load ' + layout_top_cell, file=ofile) |
| else: |
| print('load ' + layout_name + ' -dereference', file=ofile) |
| print('select top cell', file=ofile) |
| print('expand', file=ofile) |
| print('extract all', file=ofile) |
| print('ext2spice lvs', file=ofile) |
| print('ext2spice -M -o ' + layout_netlist_file, file=ofile) |
| # print('set ofile [open ' + output_file + ' w]', file=ofile) |
| # print('puts $ofile "DRC errors for cell ' + cell_name + '"', file=ofile) |
| # print('puts $ofile "--------------------------------------------"', file=ofile) |
| # print('foreach {whytext rectlist} $allerrors {', file=ofile) |
| # print(' puts $ofile ""', file=ofile) |
| # print(' puts $ofile $whytext', file=ofile) |
| # print(' foreach rect $rectlist {', file=ofile) |
| # print(' set llx [format "%.3f" [expr $oscale * [lindex $rect 0]]]', |
| # file=ofile) |
| # print(' set lly [format "%.3f" [expr $oscale * [lindex $rect 1]]]', |
| # file=ofile) |
| # print(' set urx [format "%.3f" [expr $oscale * [lindex $rect 2]]]', |
| # file=ofile) |
| # print(' set ury [format "%.3f" [expr $oscale * [lindex $rect 3]]]', |
| # file=ofile) |
| # print(' puts $ofile "$llx $lly $urx $ury"', file=ofile) |
| # print(' }', file=ofile) |
| # print('}', file=ofile) |
| # print('close $ofile', file=ofile) |
| |
| # Run the DRC Tcl script |
| |
| print('Running: magic -dnull -noconsole -rcfile ' + rcfile + ' run_magic_lvs.tcl') |
| print('Running in directory: ' + magpath) |
| mproc = subprocess.run(['magic', '-dnull', '-noconsole', '-rcfile', |
| rcfile, 'run_magic_lvs.tcl'], |
| env = myenv, cwd = magpath, |
| stdin = subprocess.DEVNULL, stdout = subprocess.PIPE, |
| stderr = subprocess.PIPE, universal_newlines = True) |
| if mproc.stdout: |
| for line in mproc.stdout.splitlines(): |
| print(line) |
| if mproc.stderr: |
| print('Error message output from magic:') |
| for line in mproc.stderr.splitlines(): |
| print(line) |
| if mproc.returncode != 0: |
| print('ERROR: Magic exited with status ' + str(mproc.returncode)) |
| |
| print('Done! magic extraction') |
| ##netgen part |
| netgen_run = subprocess.run(['netgen','-batch lvs "{} {}" "{} {}" {} {}'.format(layout_netlist_file, layout_top_cell, |
| sch_netlist_file, sch_top_cell, netgenset, report_file)], |
| env = myenv, cwd = magpath, |
| stdin = subprocess.DEVNULL, stdout = subprocess.PIPE, |
| stderr = subprocess.PIPE, universal_newlines = True) |
| |
| if netgen_run.stdout: |
| for line in netgen_run.stdout.splitlines(): |
| print(line) |
| if netgen_run.stderr: |
| print('Error message output from netgen:') |
| for line in netgen_run.stderr.splitlines(): |
| print(line) |
| if netgen_run.returncode != 0: |
| print('ERROR: Netgen exited with status ' + str(netgen_run.returncode)) |
| |
| |
| # If called as main, run all DRC tests |
| |
| if __name__ == '__main__': |
| |
| # Divide up command line into options and arguments |
| options = [] |
| arguments = [] |
| for item in sys.argv[1:]: |
| if item.find('-', 0) == 0: |
| options.append(item) |
| else: |
| arguments.append(item) |
| |
| # Need one argument: path to layout |
| # If two arguments, then 2nd argument is the output file. |
| |
| if len(arguments) > 0 and len(arguments) < 3: |
| layout_root = arguments[0] |
| |
| if len(arguments) == 1: |
| out_filename = "" |
| elif len(arguments) > 2: |
| out_filename = arguments[1] |
| |
| # python scripts/run_standard_lvs.py gds/ldo_v1/ldo_flattened_f.gds extracted.spi xschem/ldo_v1/ldo_v1_lvs.spice report.lvs ldo_flattened_f ldo_v1_lvs |
| if len(arguments) > 0 and len(arguments) < 7: |
| run_full_lvs(layout_file=arguments[0], layout_netlist_file=arguments[1], sch_netlist_file=arguments[2], report_file=arguments[3], |
| layout_top_cell=arguments[4], sch_top_cell=arguments[5]) |
| else: |
| print("Usage: run_standard_lvs.py <layout_file> [<output_file>] [options]") |
| print("Options:") |
| print(" (none)") |
| |
| |
