| #!/bin/env python3 |
| # Copyright 2020 Efabless Corporation |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| # |
| # set_user_id.py --- |
| # |
| # Manipulate the magic database, GDS, and verilog source files for the |
| # user_id_programming block to set the user ID number. |
| # |
| # The user ID number is a 32-bit value that is passed to this routine |
| # as an integer. |
| # |
| # user_id_programming layout map: |
| # Positions marked (in microns) for value = 0. For value = 1, move |
| # the via 0.92um to the left. |
| # |
| # Layout grid is 0.46um x 0.34um with half-pitch offset (0.23um, 0.17um) |
| # |
| # Signal Via position (um) |
| # name X Y |
| #-------------------------------- |
| # mask_rev[0] 14.49 9.35 |
| # mask_rev[1] 16.33 9.35 |
| # mask_rev[2] 10.35 20.23 |
| # mask_rev[3] 8.05 9.35 |
| # mask_rev[4] 28.29 9.35 |
| # mask_rev[5] 21.85 25.67 |
| # mask_rev[6] 8.05 20.23 |
| # mask_rev[7] 20.47 9.35 |
| # mask_rev[8] 17.25 17.85 |
| # mask_rev[9] 25.53 12.07 |
| # mask_rev[10] 22.31 20.23 |
| # mask_rev[11] 13.11 9.35 |
| # mask_rev[12] 23.69 23.29 |
| # mask_rev[13] 24.15 12.07 |
| # mask_rev[14] 13.57 17.85 |
| # mask_rev[15] 23.23 6.97 |
| # mask_rev[16] 24.15 17.85 |
| # mask_rev[17] 8.51 17.85 |
| # mask_rev[18] 23.69 20.23 |
| # mask_rev[19] 10.81 23.29 |
| # mask_rev[20] 14.95 6.97 |
| # mask_rev[21] 18.17 23.29 |
| # mask_rev[22] 21.39 17.85 |
| # mask_rev[23] 26.45 25.67 |
| # mask_rev[24] 9.89 17.85 |
| # mask_rev[25] 15.87 17.85 |
| # mask_rev[26] 26.45 17.85 |
| # mask_rev[27] 8.51 6.97 |
| # mask_rev[28] 10.81 9.35 |
| # mask_rev[29] 27.83 20.23 |
| # mask_rev[30] 16.33 23.29 |
| # mask_rev[31] 8.05 14.79 |
| #-------------------------------- |
| |
| import os |
| import sys |
| import re |
| |
| def usage(): |
| print("set_user_id.py <user_id_value> [<path_to_project>]") |
| return 0 |
| |
| if __name__ == '__main__': |
| |
| # Coordinate pairs in microns for the zero position on each bit |
| mask_rev = ( |
| (14.49, 9.35), (16.33, 9.35), (10.35, 20.23), ( 8.05, 9.35), |
| (28.29, 9.35), (21.85, 25.67), ( 8.05, 20.23), (20.47, 9.35), |
| (17.25, 17.85), (25.53, 12.07), (22.31, 20.23), (13.11, 9.35), |
| (23.69, 23.29), (24.15, 12.07), (13.57, 17.85), (23.23, 6.97), |
| (24.15, 17.85), ( 8.51, 17.85), (23.69, 20.23), (10.81, 23.29), |
| (14.95, 6.97), (18.17, 23.29), (21.39, 17.85), (26.45, 25.67), |
| ( 9.89, 17.85), (15.87, 17.85), (26.45, 17.85), ( 8.51, 6.97), |
| (10.81, 9.35), (27.83, 20.23), (16.33, 23.29), ( 8.05, 14.79)); |
| |
| optionlist = [] |
| arguments = [] |
| |
| debugmode = False |
| |
| for option in sys.argv[1:]: |
| if option.find('-', 0) == 0: |
| optionlist.append(option) |
| else: |
| arguments.append(option) |
| |
| if len(arguments) != 1 and len(arguments) != 2: |
| if len(arguments) != 0: |
| print("Wrong number of arguments given to cleanup_unref.py.") |
| usage() |
| sys.exit(0) |
| |
| if '-debug' in optionlist: |
| debugmode = True |
| |
| user_id_value = arguments[0] |
| |
| # Convert to binary |
| user_id_bits = '{0:032b}'.format(int(user_id_value)) |
| |
| if len(arguments) == 2: |
| user_project_path = arguments[1] |
| else: |
| user_project_path = os.getcwd() |
| |
| magpath = user_project_path + '/mag' |
| gdspath = user_project_path + '/gds' |
| vpath = user_project_path + '/verilog' |
| errors = 0 |
| |
| if os.path.isdir(gdspath): |
| |
| # Bytes leading up to via position are: |
| viarec = "00 06 0d 02 00 43 00 06 0e 02 00 2c 00 2c 10 03 " |
| viabytes = bytes.fromhex(viarec) |
| |
| # Read the GDS file. If a backup was made of the zero-value |
| # program, then use it. |
| |
| gdsbak = gdspath + '/user_id_prog_zero.gds' |
| gdsfile = gdspath + '/user_id_programming.gds' |
| |
| if os.path.isfile(gdsbak): |
| with open(gdsbak, 'rb') as ifile: |
| gdsdata = ifile.read() |
| else: |
| with open(gdsfile, 'rb') as ifile: |
| gdsdata = ifile.read() |
| |
| for i in range(0,32): |
| # Ignore any zero bits. |
| if user_id_bits[i] == '0': |
| continue |
| |
| coords = mask_rev[i] |
| xum = coords[0] |
| yum = coords[1] |
| |
| # Contact is 0.17 x 0.17, so add and subtract 0.085 to get |
| # the corner positions. |
| |
| xllum = xum - 0.085 |
| yllum = yum - 0.085 |
| xurum = xum + 0.085 |
| yurum = yum + 0.085 |
| |
| # Get the 4-byte hex values for the corner coordinates |
| xllnm = round(xllum * 1000) |
| yllnm = round(yllum * 1000) |
| xllhex = '{0:08x}'.format(xllnm) |
| yllhex = '{0:08x}'.format(yllnm) |
| xurnm = round(xurum * 1000) |
| yurnm = round(yurum * 1000) |
| xurhex = '{0:08x}'.format(xurnm) |
| yurhex = '{0:08x}'.format(yurnm) |
| |
| # Magic's GDS output for vias always starts at the lower left |
| # corner and goes counterclockwise, repeating the first point. |
| viaoldposdata = viarec + xllhex + yllhex + xurhex + yllhex |
| viaoldposdata += xurhex + yurhex + xllhex + yurhex + xllhex + yllhex |
| |
| # For "one" bits, the X position is moved 0.92 microns to the left |
| newxllum = xllum - 0.92 |
| newxurum = xurum - 0.92 |
| |
| # Get the 4-byte hex values for the new corner coordinates |
| newxllnm = round(newxllum * 1000) |
| newxllhex = '{0:08x}'.format(newxllnm) |
| newxurnm = round(newxurum * 1000) |
| newxurhex = '{0:08x}'.format(newxurnm) |
| |
| vianewposdata = viarec + newxllhex + yllhex + newxurhex + yllhex |
| vianewposdata += newxurhex + yurhex + newxllhex + yurhex + newxllhex + yllhex |
| |
| # Diagnostic |
| if debugmode: |
| print('Bit ' + str(i) + ':') |
| print('Via position ({0:3.2f}, {1:3.2f}) to ({2:3.2f}, {3:3.2f})'.format(xllum, yllum, xurum, yurum)) |
| print('Old hex string = ' + viaoldposdata) |
| print('New hex string = ' + vianewposdata) |
| |
| # Convert hex strings to byte arrays |
| viaoldbytedata = bytearray.fromhex(viaoldposdata) |
| vianewbytedata = bytearray.fromhex(vianewposdata) |
| |
| # Replace the old data with the new |
| if viaoldbytedata not in gdsdata: |
| print('Error: via not found for bit position ' + str(i)) |
| errors += 1 |
| else: |
| gdsdata = gdsdata.replace(viaoldbytedata, vianewbytedata) |
| |
| if errors == 0: |
| # Keep a copy of the original |
| if not os.path.isfile(gdsbak): |
| os.rename(gdsfile, gdsbak) |
| |
| with open(gdsfile, 'wb') as ofile: |
| ofile.write(gdsdata) |
| |
| print('Done!') |
| |
| else: |
| print('There were errors in processing. No file written.') |
| sys.exit(1) |
| |
| else: |
| print('No directory ' + gdspath + ' found.') |
| sys.exit(1) |
| sys.exit(0) |
