git.rot13.org Git - goodfet/blob - client/GoodFETXSCALE.py

   1 #!/usr/bin/env python
   2 # GoodFET XScale JTAG Client
   3
   4 import sys, binascii, struct
   5
   6 # Standard verbs
   7 READ  = 0x00
   8 WRITE = 0x01
   9 PEEK  = 0x02
  10 POKE  = 0x03
  11 SETUP = 0x10
  12 START = 0x20
  13 STOP  = 0x21
  14 CALL  = 0x30
  15 EXEC  = 0x31
  16 NOK   = 0x7E
  17 OK    = 0x7F
  18
  19 # XSCALE JTAG verbs
  20 # verbs start at 0xF0
  21
  22 from GoodFETJTAG import GoodFETJTAG
  23 from intelhex import IntelHex
  24
  25 class GoodFETXSCALE(GoodFETJTAG):
  26
  27     """A GoodFET variant for use with XScale processors."""
  28
  29     XSCALEAPP=0x15;
  30     APP=XSCALEAPP;
  31
  32     def setup(self):
  33         """Move the FET into the JTAG ARM application."""
  34         sys.stdout.write("Initializing XScale...")
  35         self.writecmd(self.APP, SETUP)
  36         self._check_return(SETUP)
  37
  38     def start(self):
  39         """Start debugging."""
  40         sys.stdout.write("Staring session...")
  41         self.writecmd(self.APP, START)
  42         self._check_return(START)
  43
  44     def stop(self):
  45         """Stop debugging."""
  46         sys.stdout.write("Stopping session...")
  47         self.writecmd(self.APP, STOP)
  48         self._check_return(STOP)
  49
  50