78 lines
3.3 KiB
Python
78 lines
3.3 KiB
Python
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# Copyright (c) 2015 ARM Limited
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# All rights reserved
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#
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# The license below extends only to copyright in the software and shall
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# not be construed as granting a license to any other intellectual
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# property including but not limited to intellectual property relating
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# to a hardware implementation of the functionality of the software
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# licensed hereunder. You may use the software subject to the license
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# terms below provided that you ensure that this notice is replicated
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# unmodified and in its entirety in all distributions of the software,
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# modified or unmodified, in source code or in binary form.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Authors: Andreas Sandberg
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#
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def upgrader(cpt):
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"""The gem5 GIC extensions change the size of many GIC data
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structures. Resize them to match the new GIC."""
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import re
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if cpt.get('root','isa') != 'arm':
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return
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old_cpu_max = 8
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new_cpu_max = 256
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sgi_max = 16
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ppi_max = 16
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per_cpu_regs = (
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("iccrpr", [ "0xff", ]),
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("cpuEnabled", [ "false", ]),
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("cpuPriority", [ "0xff", ]),
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("cpuBpr", [ "0", ]),
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("cpuHighestInt", [ "1023", ]),
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("cpuPpiPending", [ "0", ]),
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("cpuPpiActive", [ "0", ] ),
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("interrupt_time", [ "0", ]),
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("*bankedIntPriority", ["0", ] * (sgi_max + ppi_max)),
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)
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new_per_cpu_regs = (
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("cpuSgiPendingExt", "0"),
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("cpuSgiActiveExt", "0"),
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)
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for sec in cpt.sections():
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if re.search('.*\.gic$', sec):
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for reg, default in per_cpu_regs:
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value = cpt.get(sec, reg).split(" ")
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assert len(value) / len(default) == old_cpu_max, \
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"GIC register size mismatch"
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value += [ " ".join(default), ] * (new_cpu_max - old_cpu_max)
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cpt.set(sec, reg, " ".join(value))
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for reg, default in new_per_cpu_regs:
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cpt.set(sec, reg, " ".join([ default, ] * new_cpu_max))
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