Merge

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extra : convert_revision : 22919164108afd74f30207606f59a38992991dae

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diff --git a/python/m5/objects/Device.mpy b/python/m5/objects/Device.mpy
new file mode 100644
index 000000000..47f8db1cb
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+++ b/python/m5/objects/Device.mpy
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+from FunctionalMemory import FunctionalMemory
+
+# This device exists only because there are some devices that I don't
+# want to have a Platform parameter because it would cause a cycle in
+# the C++ that cannot be easily solved.
+#
+# The real solution to this problem is to pass the ParamXXX structure
+# to the constructor, but with the express condition that SimObject
+# parameter values are not to be available at construction time.  If
+# some further configuration must be done, it must be done during the
+# initialization phase at which point all SimObject pointers will be
+# valid.
+simobj FooPioDevice(FunctionalMemory):
+    type = 'PioDevice'
+    abstract = True
+    addr = Param.Addr("Device Address")
+    mmu = Param.MemoryController(Super, "Memory Controller")
+    io_bus = Param.Bus(NULL, "The IO Bus to attach to")
+    pio_latency = Param.Tick(1, "Programmed IO latency in bus cycles")
+
+simobj FooDmaDevice(FooPioDevice):
+    type = 'DmaDevice'
+    abstract = True
+
+simobj PioDevice(FooPioDevice):
+    type = 'PioDevice'
+    abstract = True
+    platform = Param.Platform(Super, "Platform")
+
+simobj DmaDevice(PioDevice):
+    type = 'DmaDevice'
+    abstract = True
+