src/pinmux_generator.py

   1 # ================================== Steps to add peripherals ============
   2 # Step-1:   create interface declaration for the peripheral to be added.
   3 #           Remember these are interfaces defined for the pinmux and hence
   4 #           will be opposite to those defined at the peripheral.
   5 #           For eg. the output TX from the UART will be input (method Action)
   6 #           for the pinmux.
   7 #           These changes will have to be done in interface_decl.py
   8 # Step-2    define the wires that will be required to transfer data from the
   9 #           peripheral interface to the IO cell and vice-versa. Create a
  10 #           mkDWire for each input/output between the peripheral and the
  11 #           pinmux. Also create an implicit wire of GenericIOType for each cell
  12 #           that can be connected to a each bit from the peripheral.
  13 #           These changes will have to be done in wire_def.py
  14 # Step-3:   create the definitions for each of the methods defined above.
  15 #           These changes will have to be done in interface_decl.py
  16 # ========================================================================
  17
  18 # default module imports
  19 import getopt
  20 import os.path
  21 import sys
  22
  23 from bsv.pinmux_generator import pinmuxgen as bsvgen
  24
  25 def printhelp():
  26     print ('''pinmux_generator.py [-o outputdir] [-v|--validate] [-h|--help]
  27                                   [-t outputtype]
  28     -t | outputtype : outputtype, defaults to bsv
  29     -o outputdir    : defaults to bsv_src.  also location for reading pinmux.txt
  30                       interfaces.txt and *.txt
  31     -v | --validate : runs some validation on the pinmux
  32     -h | --help     : this help message
  33 ''')
  34
  35
  36 if __name__ == '__main__':
  37     try:
  38         options, remainder = getopt.getopt(
  39             sys.argv[1:],
  40             'o:vht:',
  41             ['output=',
  42              'validate',
  43              'outputtype=',
  44              'help',
  45              'version=',
  46              ])
  47     except getopt.GetoptError as err:
  48         print "ERROR: %s" % str(err)
  49         printhelp()
  50         sys.exit(1)
  51
  52     output_type = 'bsv'
  53     output_dir = None
  54     validate = False
  55     for opt, arg in options:
  56         if opt in ('-o', '--output'):
  57             output_dir = arg
  58         elif opt in ('-t', '--outputtype'):
  59             output_type = arg
  60         elif opt in ('-v', '--validate'):
  61             validate = True
  62         elif opt in ('-h', '--help'):
  63             printhelp()
  64             sys.exit(0)
  65
  66     gentypes = {'bsv': bsvgen}
  67     if not gentypes.has_key(output_type):
  68         print "ERROR: output type '%s' does not exist" % output_type
  69         printhelp()
  70         sys.exit(0)
  71     gentypes[output_type](output_dir, validate)
  72