| # Copyright (c) 2012 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. |
| # |
| # Copyright (c) 2005-2008 The Regents of The University of Michigan |
| # All rights reserved. |
| # |
| # 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 |
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| # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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| # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| from m5.params import * |
| from m5.objects.ClockedObject import ClockedObject |
| |
| |
| class AbstractMemory(ClockedObject): |
| type = "AbstractMemory" |
| abstract = True |
| cxx_header = "mem/abstract_mem.hh" |
| cxx_class = "gem5::memory::AbstractMemory" |
| |
| # A default memory size of 128 MiB (starting at 0) is used to |
| # simplify the regressions |
| range = Param.AddrRange( |
| "128MiB", "Address range (potentially interleaved)" |
| ) |
| null = Param.Bool(False, "Do not store data, always return zero") |
| |
| # All memories are passed to the global physical memory, and |
| # certain memories may be excluded from the global address map, |
| # e.g. by the testers that use shadow memories as a reference |
| in_addr_map = Param.Bool(True, "Memory part of the global address map") |
| |
| # When KVM acceleration is used, memory is mapped into the guest process |
| # address space and accessed directly. Some memories may need to be |
| # excluded from this mapping if they overlap with other memory ranges or |
| # are not accessible by the CPU. |
| kvm_map = Param.Bool(True, "Should KVM map this memory for the guest") |
| |
| # Should the bootloader include this memory when passing |
| # configuration information about the physical memory layout to |
| # the kernel, e.g. using ATAG or ACPI |
| conf_table_reported = Param.Bool(True, "Report to configuration table") |
| |
| # Image file to load into this memory as its initial contents. This is |
| # particularly useful for ROMs. |
| image_file = Param.String( |
| "", "Image to load into memory as its initial contents" |
| ) |
| |
| writeable = Param.Bool(True, "Allow writes to this memory") |