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
  26 def printhelp():
  27     print ('''pinmux_generator.py [-o outputdir] [-v|--validate] [-h|--help]
  28                                   [-t outputtype]
  29     -t | outputtype : outputtype, defaults to bsv
  30     -o outputdir    : defaults to bsv_src.  also location for reading pinmux.txt
  31                       interfaces.txt and *.txt
  32     -v | --validate : runs some validation on the pinmux
  33     -h | --help     : this help message
  34 ''')
  35
  36
  37 if __name__ == '__main__':
  38     try:
  39         options, remainder = getopt.getopt(
  40             sys.argv[1:],
  41             'o:vht:',
  42             ['output=',
  43              'validate',
  44              'outputtype=',
  45              'help',
  46              'version=',
  47              ])
  48     except getopt.GetoptError as err:
  49         print "ERROR: %s" % str(err)
  50         printhelp()
  51         sys.exit(1)
  52
  53     output_type = 'bsv'
  54     output_dir = None
  55     validate = False
  56     for opt, arg in options:
  57         if opt in ('-o', '--output'):
  58             output_dir = arg
  59         elif opt in ('-t', '--outputtype'):
  60             output_type = arg
  61         elif opt in ('-v', '--validate'):
  62             validate = True
  63         elif opt in ('-h', '--help'):
  64             printhelp()
  65             sys.exit(0)
  66
  67     gentypes = {'bsv': bsvgen}
  68     if not gentypes.has_key(output_type):
  69         print "ERROR: output type '%s' does not exist" % output_type
  70         printhelp()
  71         sys.exit(0)
  72     gentypes[output_type](output_dir, validate)