--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/python/adi.py	Sat Feb 09 16:05:36 2013 +0100
@@ -0,0 +1,59 @@
+
+# Implementation of the ADI (ARM Debug Interface) v5 interface.
+
+COMPONENT_CLASSES = {0x1: 'ROM table'}
+
+class Adi:
+   def __init__(self, iface):
+      self.iface = iface
+   def r32(self, address):
+      return self.iface.read_debug32(address)
+   def w32(self, address, value):
+      self.iface.write_debug32(address, value)
+   def getId(self, offset):
+      print('reading id from {0:X}'.format(offset))
+      pid4 = self.r32(offset + 0xFD0)
+      #print('pid4', pid4)
+      pid5 = self.r32(offset + 0xFD4)
+      pid6 = self.r32(offset + 0xFD8)
+      pid7 = self.r32(offset + 0xFDC)
+      pid0 = self.r32(offset + 0xFE0)
+      pid1 = self.r32(offset + 0xFE4)
+      pid2 = self.r32(offset + 0xFE8)
+      pid3 = self.r32(offset + 0xFEC)
+      cid0 = self.r32(offset + 0xFF0)
+      cid1 = self.r32(offset + 0xFF4)
+      cid2 = self.r32(offset + 0xFF8)
+      cid3 = self.r32(offset + 0xFFC)
+      pids = [pid0, pid1, pid2, pid3, pid4, pid5, pid6, pid7]
+      cids = [cid0, cid1, cid2, cid3]
+      print('cids:', [hex(x) for x in cids], 'pids', [hex(x) for x in pids])
+      valid = cid0 == 0xD and (cid1 & 0xF) == 0x0 and cid2 == 0x5 and cid3 == 0xB1
+      if valid:
+         component_class = cid1 >> 4
+      else:
+         print('invalid class')
+         component_class = 0
+      # TODO: use pids
+      return component_class, pids
+      
+   def parseRomTable(self, offset):
+      assert (offset & 0xFFF) == 0
+      component_class, pid = self.getId(offset)
+      assert component_class == 1
+      print('Component class:', COMPONENT_CLASSES[component_class])
+      print('memory also on this bus:', self.r32(offset + 0xFCC))
+      idx = 0
+      entry = self.r32(offset + idx * 4)
+      while entry != 0:
+         #print('Entry: {0:X}'.format(entry))
+         entryOffset = entry & 0xFFFFF000
+         cls, pids = self.getId((offset + entryOffset) & 0xFFFFFFFF)
+         print('class:', cls)
+         if cls == 9:
+            print('Debug block found!')
+
+         idx += 1
+         entry = self.r32(offset + idx * 4)
+
+