blob: 8351b005f0ab5da4aca9279fd4be88bad8812774 [file] [log] [blame]
#!/usr/bin/env python3
# text2m5 ---
# This script changes magic layouts from the sky130_ml_xx_hd library
# by recasting the layer used from metal1 to metal5, and adding a
# scalefactor of 12 so that the characters are sized to avoid DRC
# errors on metal5.
# This script is a filter to be run by setting the name of this script as
# the value to "filter=" for the library install in the sky130 Makefile.
import re
import os
import sys
def filter(inname, outname):
# Read input
with open(inname, 'r') as inFile:
spitext =
spilines = spitext.splitlines()
print(' failed to open ' + inname + ' for reading.', file=sys.stderr)
return 1
# The library is based on sky130A only. Pick up the name of the PDK variant
# from the input name (which is four directory levels up from inname)
variant = inname.split('/')[-5]
# Process input with regexp
fixedlines = []
modified = False
for line in spilines:
# These substitutions are for files originating from cells/*/*.spice
fixedline = re.sub('<< metal1 >>', '<< metal5 >>', line)
fixedline = re.sub('tech sky130A', 'tech ' + variant + '\nmagscale 12 1', fixedline)
if fixedline != line:
modified = True
# Write output
if outname == None:
for i in fixedlines:
# If the output is a symbolic link but no modifications have been made,
# then leave it alone. If it was modified, then remove the symbolic
# link before writing.
if os.path.islink(outname):
if not modified:
return 0
with open(outname, 'w') as outFile:
for i in fixedlines:
print(i, file=outFile)
print(' failed to open ' + outname + ' for writing.', file=sys.stderr)
return 1
if __name__ == '__main__':
# This script expects to get one or two arguments. One argument is
# mandatory and is the input file. The other argument is optional and
# is the output file. The output file and input file may be the same
# name, in which case the original input is overwritten.
options = []
arguments = []
for item in sys.argv[1:]:
if item.find('-', 0) == 0:
if len(arguments) > 0:
infilename = arguments[0]
if len(arguments) > 1:
outfilename = arguments[1]
outfilename = None
result = filter(infilename, outfilename)