Added a generate_fill.py script for fill generation, and started
a compositor.py script for final composition of caravel layout,
seal ring, and generated fill.
diff --git a/scripts/compositor.py b/scripts/compositor.py
new file mode 100644
index 0000000..3d96ca4
--- /dev/null
+++ b/scripts/compositor.py
@@ -0,0 +1,5 @@
+#!/bin/env python3
+#
+# compository.py ---
+#
+# Final composition. Combine the caravel top level, seal ring, and fill.
diff --git a/scripts/generate_fill.py b/scripts/generate_fill.py
new file mode 100755
index 0000000..0a84a48
--- /dev/null
+++ b/scripts/generate_fill.py
@@ -0,0 +1,96 @@
+#!/bin/env python3
+#
+# generate_fill.py ---
+#
+# Run the fill generation on the caravel top level.
+#
+
+import sys
+import os
+import re
+import subprocess
+
+def usage():
+ print("generate_fill.py [layout_name] [-keep]")
+ return 0
+
+if __name__ == '__main__':
+
+ if len(sys.argv) == 1:
+ usage()
+ sys.exit(0)
+
+ optionlist = []
+ arguments = []
+
+ debugmode = False
+ keepmode = False
+
+ for option in sys.argv[1:]:
+ if option.find('-', 0) == 0:
+ optionlist.append(option)
+ else:
+ arguments.append(option)
+
+ if len(arguments) > 1:
+ print("Wrong number of arguments given to generate_fill.py.")
+ usage()
+ sys.exit(0)
+
+ if len(arguments) == 1:
+ project = arguments[0]
+ else:
+ project = 'caravel'
+
+ if '-debug' in optionlist:
+ debugmode = True
+ if '-keep' in optionlist:
+ keepmode = True
+
+ magdir = '../mag'
+ rcfile = magdir + '/.magicrc'
+
+ with open(magdir + '/generate_fill.tcl', 'w') as ofile:
+ print('#!/bin/env wish', file=ofile)
+ print('drc off', file=ofile)
+ print('load ' + project + ' -dereference', file=ofile)
+ print('select top cell', file=ofile)
+ print('expand', file=ofile)
+
+ # Flatten into a cell with a new name
+ print('puts stdout "Flattening layout. . . "', file=ofile)
+ print('flatten -nolabels ' + project + '_fill_pattern', file=ofile)
+ print('load ' + project + '_fill_pattern', file=ofile)
+
+ # Remove any GDS_FILE reference
+ print('property GDS_FILE ""', file=ofile)
+ print('cif ostyle wafflefill', file=ofile)
+ print('puts stdout "Writing GDS. . . "', file=ofile)
+ print('gds write ../gds/' + project + '_fill_pattern.gds', file=ofile)
+ print('quit -noprompt', file=ofile)
+
+ myenv = os.environ.copy()
+ myenv['MAGTYPE'] = 'mag'
+
+ mproc = subprocess.run(['magic', '-dnull', '-noconsole',
+ '-rcfile', rcfile, magdir + '/generate_fill.tcl'],
+ stdin = subprocess.DEVNULL,
+ stdout = subprocess.PIPE,
+ stderr = subprocess.PIPE,
+ cwd = magdir,
+ env = myenv,
+ 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))
+
+ if not keepmode:
+ os.remove(magdir + '/generate_fill.tcl')
+
+ exit(0)
