Added a filter to transform the sky130_ml_xx_hd library from
metal1 to metal5 and scale the characters up by a factor of 12
so that they will be DRC clean for metal5.
diff --git a/sky130/Makefile.in b/sky130/Makefile.in
index aab678b..a33c113 100644
--- a/sky130/Makefile.in
+++ b/sky130/Makefile.in
@@ -513,7 +513,7 @@
${RM} ${STAGING_PATH}/${SKY130A}/libs.ref/sky130_fd_sc_lp/verilog/*.*.v
# Install alphanumeric library.
${STAGE} -source ${REPO_PATH} -target ${STAGING_PATH}/${SKY130A} \
- -mag %l/mag/*.mag \
+ -mag %l/mag/*.mag filter=custom/scripts/text2m5.py \
-library general sky130_ml_xx_hd |& tee -a ${SKY130A}_install.log
# Install text2mag.py script for alphanumeric library
mkdir -p ${STAGING_PATH}/${SKY130A}/libs.ref/sky130_ml_xx_hd/scripts
diff --git a/sky130/custom/scripts/text2m5.py b/sky130/custom/scripts/text2m5.py
new file mode 100755
index 0000000..05b8750
--- /dev/null
+++ b/sky130/custom/scripts/text2m5.py
@@ -0,0 +1,89 @@
+#!/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
+ try:
+ with open(inname, 'r') as inFile:
+ spitext = inFile.read()
+ spilines = spitext.splitlines()
+ except:
+ print('text2m5.py: failed to open ' + fnmIn + ' for reading.', file=sys.stderr)
+ return 1
+
+ # 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 sky130A\nmagscale 12 1', fixedline)
+
+ fixedlines.append(fixedline)
+ if fixedline != line:
+ modified = True
+
+ # Write output
+ if outname == None:
+ for i in fixedlines:
+ print(i)
+ else:
+ # 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
+ else:
+ os.unlink(outname)
+ try:
+ with open(outname, 'w') as outFile:
+ for i in fixedlines:
+ print(i, file=outFile)
+ except:
+ print('text2m5.py: 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:
+ options.append(item[1:])
+ else:
+ arguments.append(item)
+
+ if len(arguments) > 0:
+ infilename = arguments[0]
+
+ if len(arguments) > 1:
+ outfilename = arguments[1]
+ else:
+ outfilename = None
+
+ result = filter(infilename, outfilename)
+ sys.exit(result)
