src/cpu/kvm/BaseKvmCPU.py

   1 # Copyright (c) 2012 ARM Limited
   2 # All rights reserved.
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   8 # licensed hereunder.  You may use the software subject to the license
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  25 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  35 #
  36 # Authors: Andreas Sandberg
  37
  38 from m5.params import *
  39 from m5.proxy import *
  40
  41 from BaseCPU import BaseCPU
  42 from KvmVM import KvmVM
  43
  44 class BaseKvmCPU(BaseCPU):
  45     type = 'BaseKvmCPU'
  46     cxx_header = "cpu/kvm/base.hh"
  47     abstract = True
  48
  49     @classmethod
  50     def export_methods(cls, code):
  51         code('''
  52       void dump() const;
  53 ''')
  54
  55     @classmethod
  56     def memory_mode(cls):
  57         return 'atomic_noncaching'
  58
  59     @classmethod
  60     def require_caches(cls):
  61         return False
  62
  63     @classmethod
  64     def support_take_over(cls):
  65         return True
  66
  67     useCoalescedMMIO = Param.Bool(False, "Use coalesced MMIO (EXPERIMENTAL)")
  68     usePerfOverflow = Param.Bool(False, "Use perf event overflow counters (EXPERIMENTAL)")
  69     alwaysSyncTC = Param.Bool(False,
  70                               "Always sync thread contexts on entry/exit")
  71
  72     hostFreq = Param.Clock("2GHz", "Host clock frequency")
  73     hostFactor = Param.Float(1.0, "Cycle scale factor")