config: Add a mem-type config option to se/fs scripts

This patch enables selection of the memory controller class through a
mem-type command-line option. Behind the scenes, this option is
treated much like the cpu-type, and a similar framework is used to
resolve the valid options, and translate the short-hand description to
a valid class.

The regression scripts are updated with a hardcoded memory class for
the moment. The best solution going forward is probably to get the
memory out of the makeSystem functions, but Ruby complicates things as
it does not connect the memory controller to the membus.

--HG--
rename : configs/common/CpuConfig.py => configs/common/MemConfig.py

1 files changed, 125 insertions, 0 deletions

diff --git a/configs/common/MemConfig.py b/configs/common/MemConfig.py
new file mode 100644
index 000000000..4e772c3ea
--- /dev/null
+++ b/configs/common/MemConfig.py
@@ -0,0 +1,125 @@
+# Copyright (c) 2013 ARM Limited
+# All rights reserved.
+#
+# The license below extends only to copyright in the software and shall
+# not be construed as granting a license to any other intellectual
+# property including but not limited to intellectual property relating
+# to a hardware implementation of the functionality of the software
+# licensed hereunder.  You may use the software subject to the license
+# terms below provided that you ensure that this notice is replicated
+# unmodified and in its entirety in all distributions of the software,
+# modified or unmodified, in source code or in binary form.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Authors: Andreas Sandberg
+#          Andreas Hansson
+
+import m5.objects
+import inspect
+import sys
+from textwrap import  TextWrapper
+
+# Dictionary of mapping names of real memory controller models to
+# classes.
+_mem_classes = {}
+
+# Memory aliases. We make sure they exist before we add them to the
+# fina; list. A target may be specified as a tuple, in which case the
+# first available memory controller model in the tuple will be used.
+_mem_aliases_all = [
+    ("simple_mem", "SimpleMemory"),
+    ("ddr3-1600", "SimpleDDR3"),
+    ("lpddr2_s4-1066", "SimpleLPDDR2_S4"),
+    ("wio-200", "SimpleWideIO"),
+    ]
+
+# Filtered list of aliases. Only aliases for existing memory
+# controllers exist in this list.
+_mem_aliases = {}
+
+
+def is_mem_class(cls):
+    """Determine if a class is a memory controller that can be instantiated"""
+
+    # We can't use the normal inspect.isclass because the ParamFactory
+    # and ProxyFactory classes have a tendency to confuse it.
+    try:
+        return issubclass(cls, m5.objects.AbstractMemory) and \
+            not cls.abstract
+    except TypeError:
+        return False
+
+def get(name):
+    """Get a memory class from a user provided class name or alias."""
+
+    real_name = _mem_aliases.get(name, name)
+
+    try:
+        mem_class = _mem_classes[real_name]
+        return mem_class
+    except KeyError:
+        print "%s is not a valid memory controller." % (name,)
+        sys.exit(1)
+
+def print_mem_list():
+    """Print a list of available memory classes including their aliases."""
+
+    print "Available memory classes:"
+    doc_wrapper = TextWrapper(initial_indent="\t\t", subsequent_indent="\t\t")
+    for name, cls in _mem_classes.items():
+        print "\t%s" % name
+
+        # Try to extract the class documentation from the class help
+        # string.
+        doc = inspect.getdoc(cls)
+        if doc:
+            for line in doc_wrapper.wrap(doc):
+                print line
+
+    if _mem_aliases:
+        print "\nMemory aliases:"
+        for alias, target in _mem_aliases.items():
+            print "\t%s => %s" % (alias, target)
+
+def mem_names():
+    """Return a list of valid memory names."""
+    return _mem_classes.keys() + _mem_aliases.keys()
+
+# Add all memory controllers in the object hierarchy.
+for name, cls in inspect.getmembers(m5.objects, is_mem_class):
+    _mem_classes[name] = cls
+
+for alias, target in _mem_aliases_all:
+    if isinstance(target, tuple):
+        # Some aliases contain a list of memory controller models
+        # sorted in priority order. Use the first target that's
+        # available.
+        for t in target:
+            if t in _mem_classes:
+                _mem_aliases[alias] = t
+                break
+    elif target in _mem_classes:
+        # Normal alias
+        _mem_aliases[alias] = target