--- /dev/null
+#!/usr/bin/env python
+#
+# Copyright 2009, Ubixum, Inc
+#
+# This file copied and modified for fx2lib from the GnuRadio project
+#
+# Copyright 2004,2006 Free Software Foundation, Inc.
+#
+# This file is part of GNU Radio
+#
+# GNU Radio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# GNU Radio is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Radio; see the file COPYING. If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+#
+
+import re
+import sys, struct
+import os, os.path
+from optparse import OptionParser
+
+
+def hex_to_bytes (s):
+ if len (s) & 0x1:
+ raise ValueError, "Length must be even"
+ r = []
+ for i in range (0, len(s), 2):
+ r.append (int (s[i:i+2], 16))
+ return r
+
+def msb (x):
+ return (x >> 8) & 0xff
+
+def lsb (x):
+ return x & 0xff
+
+class ihx_rec (object):
+ def __init__ (self, addr, type, data):
+ self.addr = addr
+ self.type = type
+ self.data = data
+
+class ihx_file (object):
+ def __init__ (self):
+ self.pat = re.compile (r':[0-9A-F]{10,}')
+ def read (self, file):
+ r = []
+ for line in file:
+ line = line.strip().upper ()
+ if not self.pat.match (line):
+ raise ValueError, "Invalid hex record format"
+ bytes = hex_to_bytes (line[1:])
+ sum = reduce (lambda x, y: x + y, bytes, 0) % 256
+ if sum != 0:
+ raise ValueError, "Bad hex checksum"
+ lenx = bytes[0]
+ addr = (bytes[1] << 8) + bytes[2]
+ type = bytes[3]
+ data = bytes[4:-1]
+ if lenx != len (data):
+ raise ValueError, "Invalid hex record (bad length)"
+ if type != 0:
+ break;
+ r.append (ihx_rec (addr, type, data))
+
+ return r
+
+
+def build_eeprom_image (filename, outfile,vid,pid,devid,cb):
+ """Build a ``C2 Load'' EEPROM image.
+
+ For details on this format, see section 3.4.3 of
+ the EZ-USB FX2 Technical Reference Manual
+ """
+
+ image = [
+ 0xC2, # boot from EEPROM
+ lsb (vid),
+ msb (vid),
+ lsb (pid),
+ msb (pid),
+ lsb (devid),
+ msb (devid),
+ cb # configuration byte
+ ]
+
+ # you could just append all the records..
+ # but that would most likely cause a lot of
+ # extra headers/addrs to be written
+ ihx = ihx_file();
+ records = ihx.read(open(filename))
+
+ # create image map of all values we're writing data too
+ image_map={}
+ for r in records:
+ addr=r.addr
+ c=0
+ l=len(r.data)
+ while c<l:
+ image_map[addr] = r.data[c]
+ addr += 1
+ c += 1
+ # now create new records based on contiguous image data
+ max_addr = max(image_map.keys())
+ records = []
+ start_addr = 0
+
+ while start_addr <= max_addr:
+ if not image_map.has_key(start_addr):
+ start_addr += 1
+ continue
+ end_addr = start_addr
+ # add continguous data up to 10 bits long (0x3ff)
+ # is max size, trm 3.4.3
+ size=0
+ while image_map.has_key(end_addr) and size < 0x3ff:
+ end_addr += 1
+ size += 1
+
+ l = end_addr - start_addr
+ data = []
+ for d in range(l):
+ data.append(image_map [ start_addr + d ])
+ records.append ( ihx_rec ( start_addr, 0, data ) )
+ start_addr = end_addr
+
+
+ # 4 byte header that indicates where to load
+ # the immediately follow code bytes.
+
+ for r in records:
+ image.extend( [
+ msb (len (r.data)),
+ lsb (len (r.data)),
+ msb (r.addr),
+ lsb (r.addr)
+ ])
+ image.extend(r.data)
+
+
+ # writes 0 to CPUCS reg (brings FX2 out of reset)
+ image.extend ( [
+ 0x80,
+ 0x01,
+ 0xe6,
+ 0x00,
+ 0x00
+ ] )
+
+ buf=struct.pack ( "B"*len(image), *image )
+ print "iic Image Size" , len(buf)
+ out=open( outfile, 'w')
+ out.write(buf)
+ out.close();
+
+if __name__ == '__main__':
+ usage = "usage: %prog [options] firmware.ihx outfile"
+ parser = OptionParser (usage=usage)
+ parser.add_option ( "-v", "--vid", type="int", default=0x04b4,
+ help="Vendor ID for iic c2 image." )
+ parser.add_option ( "-p", "--pid", type="int", default=0x0082,
+ help="Product ID for iic c2 image." )
+ parser.add_option ( "-d", "--devid", type="int", default=0,
+ help="Device ID for iic c2 image." )
+ parser.add_option ( "-c", "--configbyte", type="int", default=0x04,
+ help="Configuration Byte (i2c & disconnect polarity, default 0x04)" )
+ (options, args) = parser.parse_args ()
+ if len (args) != 2:
+ parser.print_help ()
+ sys.exit (1)
+
+ ihx_filename = args[0]
+ iic_filename = args[1]
+ build_eeprom_image ( ihx_filename, iic_filename, options.vid, options.pid, options.devid, options.configbyte )
+
+
projects / sigrok-firmware-fx2lafw.git / blobdiff