Corrected the sky130.tech file for the required tap surrounding
an LICON contact (which is zero on two sides); the rule for
"diff" surround should be interpreted as meaning "diff" and not
"tap".
diff --git a/sky130/custom/scripts/run_drc.py b/sky130/custom/scripts/run_drc.py
index d1c3761..0513066 100755
--- a/sky130/custom/scripts/run_drc.py
+++ b/sky130/custom/scripts/run_drc.py
@@ -1,42 +1,18 @@
#!/bin/env python3
#-------------------------------------------------------------------------
-# s8_gen_sealring.py --- a seal ring generator for SkyWater s8 using magic.
-#
-# Because the seal ring contains many layers that do not appear in standard
-# layout editing, they are all specially implemented in the s8seal_ring.tech
-# file in this directory.
-#
-# An example seal ring was generated by SkyWater and imported using magic's
-# gdsquery.sh script. It was then hand-edited to contain only the bottom
-# quarter. Then it was saved in .mag databases.
-#
-# The generator script s8_gen_sealring.py calls magic using the s8seal_ring.tech
-# file, and automatically modifies the geometry to stretch to the half width
-# and height of the specified dimensions. Then the lower-left cells are
-# copied and folded over the centerline to make the complete seal ring.
-# The seal ring is then written out in GDS format. Then a simplified magic
-# view is generated in the usual user-facing s8 technology file, with the
-# GDS_FILE property pointing to the seal ring GDS. This layout and GDS can
-# then be imported into a layout.
+# run_drc.py --- A script to run magic in batch mode and apply full DRC
+# checks on a layout. This inclues full DRC, antenna rule checks, and
+# density checks.
#
# Usage:
#
-# s8_gen_sealring.py width height target_dir [-force] [-outer] [-keep]
-#
-# Where:
-# width = the full-chip layout width
-# height = the full-chip layout height
-# target_dir = location of the full-chip layout
-#
-# -force = overwrite any existing files at the target
-# -outer = width and height are the seal ring outer edge, not the chip area
-# -keep = keep local working directory of results
+# run_drc.py <layout_name>
#
# Results:
-# Files advSeal_6um_gen.mag and advSeal_6um_gen.gds are generated and placed in
-# target_dir. advSeal_6um_gen.mag is an "abstract" view that represents the
-# seal ring in diffusion and the nikon cross in metal1, and references
-# the advSeal_6um_gen.gds file in the same directory as a GDS_FILE property.
+#
+# generates a file "<layout_name>_drc.txt" containing a human-readable
+# list of the DRC errors.
+#
#-------------------------------------------------------------------------
import subprocess
@@ -45,223 +21,15 @@
import os
import re
-def generate_sealring(width, height, target_dir, force, keep):
+# Work in progress
- # All files of interest are listed below.
-
- script = 'generate_gds.tcl'
- tech = 's8seal_ring.tech'
- corner = 'seal_ring_corner.mag'
- abstract = 'seal_ring_corner_abstract.mag'
- slots = 'sealring_slots.mag'
- array = 'seal_ring_slots_array.mag'
- nikon = 'nikon_sealring_shape.mag'
- polygons = ['sr_polygon00007.mag',
- 'sr_polygon00027.mag', 'sr_polygon00011.mag', 'sr_polygon00028.mag',
- 'sr_polygon00001.mag', 'sr_polygon00015.mag', 'sr_polygon00031.mag',
- 'sr_polygon00002.mag', 'sr_polygon00016.mag', 'sr_polygon00032.mag',
- 'sr_polygon00003.mag', 'sr_polygon00019.mag', 'sr_polygon00035.mag',
- 'sr_polygon00004.mag', 'sr_polygon00020.mag', 'sr_polygon00036.mag',
- 'sr_polygon00005.mag', 'sr_polygon00023.mag', 'sr_polygon00039.mag',
- 'sr_polygon00006.mag', 'sr_polygon00024.mag']
-
-
- # Create temporary directory
- if os.path.exists('temp'):
- print('temp/ directory exists. Please remove it before running.')
- sys.exit(0)
-
- os.makedirs('temp')
- os.chdir('temp')
-
- # Copy all .mag files, .magicrc file, and s8seal_ring.tech file to temp/
- files_to_copy = polygons[:]
- files_to_copy.append(nikon)
- files_to_copy.append(slots)
- files_to_copy.append(array)
- files_to_copy.append(corner)
- files_to_copy.append(abstract)
- files_to_copy.append(tech)
- files_to_copy.append(script)
-
- for file in files_to_copy:
- shutil.copy('../' + file, '.')
-
- # Seal ring is placed 6um outside of the chip, so add 12um to width and height
- fwidth = float(width) + 12
- fheight = float(height) + 12
-
- dbhwidth = int(fwidth * 100)
- dbhheight = int(fheight * 100)
-
- swidth = str(dbhwidth)
- sheight = str(dbhheight)
-
- swidthx5 = str(dbhwidth * 5)
-
- dwidth = str(int(fwidth * 200))
- dheight = str(int(fheight * 200))
-
- # Modify every polygon to half width and height
-
- for file in polygons:
- with open(file, 'r') as ifile:
- maglines = ifile.read().splitlines()
-
- with open(file, 'w') as ofile:
- for line in maglines:
- newline = re.sub('51200', swidth, line)
- newline = re.sub('51210', sheight, newline)
- # NOTE: polygon 39 is at scale 10, not 2, due to
- # corner positions of 45 degree angled geometry.
- newline = re.sub('256000', swidthx5, newline)
- print(newline, file=ofile)
-
- # Abstract corner view gets the same treatment
-
- qwidth = str(int(fwidth * 50))
- qheight = str(int(fheight * 50))
-
- with open(abstract, 'r') as ifile:
- maglines = ifile.read().splitlines()
-
- with open(abstract, 'w') as ofile:
- for line in maglines:
- newline = re.sub('25600', qwidth, line)
- newline = re.sub('25605', qheight, newline)
- print(newline, file=ofile)
-
- # Slots arrays are recalculated to span the width and height
-
- with open(array, 'r') as ifile:
- maglines = ifile.read().splitlines()
-
- slotsX = False
- with open(array, 'w') as ofile:
- for line in maglines:
- newline = line
- if 'slots_X' in line:
- slotsX = True
- elif 'array 0' in line:
- if slotsX:
- nslots = int((fwidth - 25.0) / 25.0) - 1
- newline = 'array 0 ' + str(nslots) + ' 5000 0 0 430'
- else:
- nslots = int((fheight - 25.0) / 25.0) - 1
- newline = 'array 0 ' + str(nslots) + ' 5000 0 0 430'
-
- print(newline, file=ofile)
-
- # Corner cell changes bounding boxes to half width and height.
-
- with open(corner, 'r') as ifile:
- maglines = ifile.read().splitlines()
-
- slotsX = False
- with open(corner, 'w') as ofile:
- for line in maglines:
- newline = re.sub('51200', swidth, line)
- newline = re.sub('51210', sheight, newline)
- print(newline, file=ofile)
-
- # Create a new top-level layout called 'advSeal_6um_gen.mag'
- # Mirrors uses in X and Y, and adds slots arrays at lower left
- # and upper right
-
- with open('advSeal_6um_gen.mag', 'w') as ofile:
- print('magic', file=ofile)
- print('tech s8seal_ring', file=ofile)
- print('magscale 1 2', file=ofile)
- print('timestamp 1584630000', file=ofile)
-
- # Lower left original
- print('use seal_ring_corner seal_ring_corner_0', file=ofile)
- print('timestamp 1584562315', file=ofile)
- print('transform 1 0 0 0 1 0', file=ofile)
- print('box -30480 -30480 ' + swidth + ' ' + sheight, file=ofile)
-
- # Mirrored in X
- print('use seal_ring_corner seal_ring_corner_3', file=ofile)
- print('timestamp 1584562315', file=ofile)
- print('transform -1 0 ' + dwidth + ' 0 1 0', file=ofile)
- print('box -30480 -30480 ' + swidth + ' ' + sheight, file=ofile)
-
- # Mirrored in Y
- print('use seal_ring_corner seal_ring_corner_1', file=ofile)
- print('timestamp 1584562315', file=ofile)
- print('transform 1 0 0 0 -1 ' + dheight, file=ofile)
- print('box -30480 -30480 ' + swidth + ' ' + sheight, file=ofile)
-
- # Mirrored in both X and Y
- print('use seal_ring_corner seal_ring_corner_2', file=ofile)
- print('timestamp 1584562315', file=ofile)
- print('transform -1 0 ' + dwidth + ' 0 -1 ' + dheight, file=ofile)
- print('box -30480 -30480 ' + swidth + ' ' + sheight, file=ofile)
-
- # Lower left slot arrays (bottom and left sides slots)
- print('use seal_ring_slots_array seal_ring_slots_array_0', file=ofile)
- print('timestamp 1584629764', file=ofile)
- print('transform 1 0 0 0 1 0', file=ofile)
- print('box 285 285 ' + swidth + ' ' + sheight, file=ofile)
-
- # Upper right slot arrays (top and right sides slots)
- print('use seal_ring_slots_array seal_ring_slots_array_1', file=ofile)
- print('timestamp 1584629764', file=ofile)
- print('transform -1 0 ' + dwidth + ' 0 -1 ' + dheight, file=ofile)
- print('box 285 285 ' + swidth + ' ' + sheight, file=ofile)
-
- print('<< end >>', file=ofile)
-
- # Create a new abstract layout TO BE called 'advSeal_6um_gen.mag'
- # This is the view in technology EFS8A. Since there is already
- # a cell with this name that is used to generate GDS, the cell
- # will be called "seal_ring.mag" and copied to "advSeal_6um_gen.mag"
- # in the target directory.
-
- xwidth = str(dbhwidth)
- xheight = str(dbhheight)
-
- with open('seal_ring.mag', 'w') as ofile:
- print('magic', file=ofile)
- print('tech EFS8A', file=ofile)
- print('timestamp 1584566829', file=ofile)
-
- # Lower left original
- print('use seal_ring_corner_abstract seal_ring_corner_abstract_0', file=ofile)
- print('timestamp 1584566221', file=ofile)
- print('transform 1 0 0 0 1 0', file=ofile)
- print('box 0 0 ' + qwidth + ' ' + qheight, file=ofile)
-
- # Mirrored in X
- print('use seal_ring_corner_abstract seal_ring_corner_abstract_3', file=ofile)
- print('timestamp 1584566221', file=ofile)
- print('transform -1 0 ' + xwidth + ' 0 1 0', file=ofile)
- print('box 0 0 ' + qwidth + ' ' + qheight, file=ofile)
-
- # Mirrored in Y
- print('use seal_ring_corner_abstract seal_ring_corner_abstract_1', file=ofile)
- print('timestamp 1584566221', file=ofile)
- print('transform 1 0 0 0 -1 ' + xheight, file=ofile)
- print('box 0 0 ' + qwidth + ' ' + qheight, file=ofile)
-
- # Mirrored in both X and Y
- print('use seal_ring_corner_abstract seal_ring_corner_abstract_2', file=ofile)
- print('timestamp 1584566221', file=ofile)
- print('transform -1 0 ' + xwidth + ' 0 -1 ' + xheight, file=ofile)
- print('box 0 0 ' + qwidth + ' ' + qheight, file=ofile)
-
- print('<< properties >>', file=ofile)
- print('string LEFview no_prefix', file=ofile)
- print('string GDS_FILE advSeal_6um_gen.gds', file=ofile)
- print('string GDS_START 0', file=ofile)
- print('string FIXED_BBOX 0 0 ' + swidth + ' ' + sheight, file=ofile)
-
- print('<< end >>', file=ofile)
+def run_full_drc(layout_name, output_file):
+ with open('run_magic_drc.tcl', 'w') as ofile:
# Create the GDS of the seal ring
mproc = subprocess.run(['magic', '-dnull', '-noconsole',
- 'generate_gds.tcl'],
+ 'run_magic_drc.tcl'],
stdin = subprocess.DEVNULL, stdout = subprocess.PIPE,
stderr = subprocess.PIPE, universal_newlines = True)
if mproc.stdout:
@@ -274,40 +42,7 @@
if mproc.returncode != 0:
print('ERROR: Magic exited with status ' + str(mproc.returncode))
- # Copy the GDS file and the abstract view to the target directory
-
- os.chdir('..')
-
- if not os.path.exists(target_dir):
- os.makedirs(target_dir)
-
- print('Installing files to ' + target_dir)
- if force or not os.path.exists(target_dir + '/advSeal_6um_gen.gds'):
- shutil.copy('temp/advSeal_6um_gen.gds', target_dir)
- else:
- print('ERROR: advSeal_6um_gen.gds already exists at target! Use -force to overwrite.')
- if force or not os.path.exists(target_dir + '/advSeal_6um_gen.mag'):
- shutil.copy('temp/seal_ring.mag', target_dir + '/advSeal_6um_gen.mag')
- else:
- print('ERROR: advSeal_6um_gen.mag already exists at target! Use -force to overwrite.')
- if force or not os.path.exists(target_dir + '/seal_ring_corner_abstract.mag'):
- shutil.copy('temp/seal_ring_corner_abstract.mag', target_dir)
- else:
- print('ERROR: seal_ring_corner_abstract.mag already exists at target! Use -force to overwrite.')
-
- # Remove the temporary directory and its contents
-
- if not keep:
- shutil.rmtree('temp')
- else:
- print('Retaining generated files in temp/ directory')
-
- # Done!
- print('Done generating files advSeal_6um_gen.gds and advSeal_6um_gen.mag in ' + target_dir)
- print('Place the seal ring cell in the final layout at (0um, 0um) before generating GDS.')
- print('The top level layout minus seal ring must have a lower left corner of (6um, 6um)')
-
-# If called as main, run generate_sealring()
+# If called as main, run all DRC tests
if __name__ == '__main__':
@@ -320,30 +55,22 @@
else:
arguments.append(item)
- force = True if '-force' in options else False
- keep = True if '-keep' in options else False
- outer = True if '-outer' in options else False
-
- # Need one argument: path to verilog netlist
+ # Need one argument: path to layout
# If two arguments, then 2nd argument is the output file.
- if len(arguments) == 3:
- width = arguments[0]
- height = arguments[1]
- target_dir = arguments[2]
+ if len(arguments) < 3:
+ layout_root = arguments[1]
- # Seal ring is 12um thick, so if "outer" option is used, subtract 12um
- # from both width and height.
- if outer:
- width = str(float(width) - 12.0)
- height = str(float(height) - 12.0)
-
- generate_sealring(width, height, target_dir, force, keep)
+ if len(arguments == 1):
+ out_fileroot = layout_root + "_drc.txt"
else:
- print("Usage: s8_gen_sealring.py <width> <height> <target_dir> [options]")
+ out_fileroot = arguments[2]
+
+ if len(arguments) < 3:
+ run_full_drc(layout_root, out_filename)
+ else:
+ print("Usage: run_drc.py <layout_name> [<output_file>] [options]")
print("Options:")
- print(" -outer : Width and height are seal ring outer edge, not chip area")
- print(" -force : Overwrite any existing files at <target_dir>")
- print(" -keep : Keep generated files in temp/ directory")
+ print(" (none)")
