hooking up the goodfet.xscale code. it is minimal for now. it should be able to...

[goodfet] / client / GoodFETXSCALE.py

diff --git a/client/GoodFETXSCALE.py b/client/GoodFETXSCALE.py
new file mode 100644 (file)
index 0000000..6e0aed5
--- /dev/null
+++ b/client/GoodFETXSCALE.py
@@ -0,0 +1,70 @@
+#!/usr/bin/env python
+# GoodFET Client Library
+# 
+#
+# Good luck with alpha / beta code.
+# Contributions and bug reports welcome.
+#
+# NOTE: this is just a hacked up copy of the GoodFETARM.py file
+
+import sys, binascii, struct
+
+# Standard verbs
+READ  = 0x00
+WRITE = 0x01
+PEEK  = 0x02
+POKE  = 0x03
+SETUP = 0x10
+START = 0x20
+STOP  = 0x21
+CALL  = 0x30
+EXEC  = 0x31
+NOK   = 0x7E
+OK    = 0x7F
+
+# XSCALE JTAG verbs
+GET_CHIP_ID         = 0xF1
+
+from GoodFET import GoodFET
+from intelhex import IntelHex
+
+class GoodFETXSCALE(GoodFET):
+
+    """A GoodFET variant for use with XScale processors."""
+
+    XSCALEAPP=0x13;
+    APP=XSCALEAPP;
+ 
+    def setup(self):
+        """Move the FET into the JTAG ARM application."""
+        print "Initializing XScale..."
+        self.writecmd(self.APP, SETUP, 0, self.data)
+
+    def start(self):
+        """Start debugging."""
+        print "Staring debug..."
+        self.writecmd(self.APP, START, 0, self.data)
+
+    def stop(self):
+        """Stop debugging."""
+        print "Stopping debug..."
+        self.writecmd(self.APP, STOP, 0, self.data)
+
+    def get_id(self):
+        """Get the Chip ID."""
+        
+        # send the get chip ID command
+        self.writecmd(self.APP, GET_CHIP_ID, 0, [])
+
+        # get the response
+        ident = struct.unpack("<L", "".join(self.data[0:4]))[0]
+
+        version = ident >> 28
+        part_number = (ident >> 12) & 0x10
+        manufacturer = ident & 0xFFF
+
+        print "XScale ID --\n\tmfg: %x\n\tpart: %x\n\tver: %x\n\t(%x)" % (version, part_number, manufacturer, ident)
+
+        return ident
+    
+