1 files changed, 116 insertions, 0 deletions
diff --git a/firmware/fx2/utils/build_eeprom.py b/firmware/fx2/utils/build_eeprom.py
new file mode 100755
index 000000000..af425554a
--- /dev/null
+++ b/firmware/fx2/utils/build_eeprom.py
@@ -0,0 +1,116 @@
+#!/usr/bin/env python
+#
+# 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
+import os, os.path
+from optparse import OptionParser
+
+# USB Vendor and Product ID's
+
+USRP1VID = 0xfffe                            # Free Software Folks
+USRP1PID = 0x0002
+USRP1PVID= 0x2500                            # Ettus Research
+USRP1PPID= 0x0001
+    
+def msb (x):
+    return (x >> 8) & 0xff
+
+def lsb (x):
+    return x & 0xff
+
+def build_eeprom_image (filename, rev):
+    """Build a ``C2 Load'' EEPROM image.
+
+    For details on this format, see section 3.4.3 of
+    the EZ-USB FX2 Technical Reference Manual
+    """
+    # get the code we want to run
+    f = open(filename, 'rb')
+    bytes = f.read()
+
+    devid = 4 #for compatibility
+    start_addr = 0 #prove me wrong
+
+    if(rev == 1):
+      VID = USRP1VID
+      PID = USRP1PPID
+    else:
+      VID = USRP1PVID
+      PID = USRP1PPID
+
+    rom_header = [
+        0xC2,                           # boot from EEPROM
+        lsb (VID),
+        msb (VID),
+        lsb (PID),
+        msb (PID),
+        lsb (devid),
+        msb (devid),
+        0                               # configuration byte
+        ]
+    
+    # 4 byte header that indicates where to load
+    # the immediately follow code bytes.
+    code_header = [
+        msb (len (bytes)),
+        lsb (len (bytes)),
+        msb (start_addr),
+        lsb (start_addr)
+        ]
+
+    # writes 0 to CPUCS reg (brings FX2 out of reset)
+    trailer = [
+        0x80,
+        0x01,
+        0xe6,
+        0x00,
+        0x00
+        ]
+
+    image = rom_header + code_header + [ord(c) for c in bytes] + trailer
+
+    assert (len (image) <= 256)
+    return image 
+
+if __name__ == '__main__':
+    usage = "usage: %prog -r REV [options] bootfile.bin outfile.bin"
+    parser = OptionParser (usage=usage)
+    parser.add_option ("-r", "--rev", type="int", default=-1,
+                       help="Specify USRP revision, 1 for USRP1, 2 for USRP1P")
+    (options, args) = parser.parse_args ()
+    if len (args) != 2:
+        parser.print_help ()
+        sys.exit (1)
+    if options.rev < 0:
+        sys.stderr.write (
+            "You must specify the USRP revision number (2 or 4) with -r REV\n")
+        sys.exit (1)
+
+    infile = args[0]
+    outfile = args[1]
+
+    image = "".join(chr(c) for c in build_eeprom_image(infile, options.rev))
+
+    f = open(outfile, 'wb')
+    f.write(str(image))
+    f.close()