tests/configs/arm_generic.py

   1 # Copyright (c) 2012 ARM Limited
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  35 #
  36 # Authors: Andreas Sandberg
  37
  38 from abc import ABCMeta, abstractmethod
  39 import m5
  40 from m5.objects import *
  41 from m5.proxy import *
  42 m5.util.addToPath('../configs/common')
  43 import FSConfig
  44 from Caches import *
  45 from base_config import *
  46 from O3_ARM_v7a import *
  47 from Benchmarks import SysConfig
  48
  49 class ArmSESystemUniprocessor(BaseSESystemUniprocessor):
  50     """Syscall-emulation builder for ARM uniprocessor systems.
  51
  52     A small tweak of the syscall-emulation builder to use more
  53     representative cache configurations.
  54     """
  55
  56     def __init__(self, **kwargs):
  57         BaseSESystem.__init__(self, **kwargs)
  58
  59     def create_caches_private(self, cpu):
  60         # The atomic SE configurations do not use caches
  61         if self.mem_mode == "timing":
  62             # Use the more representative cache configuration
  63             cpu.addTwoLevelCacheHierarchy(O3_ARM_v7a_ICache(),
  64                                           O3_ARM_v7a_DCache(),
  65                                           O3_ARM_v7aL2())
  66
  67 class LinuxArmSystemBuilder(object):
  68     """Mix-in that implements create_system.
  69
  70     This mix-in is intended as a convenient way of adding an
  71     ARM-specific create_system method to a class deriving from one of
  72     the generic base systems.
  73     """
  74     def __init__(self, machine_type, **kwargs):
  75         """
  76         Arguments:
  77           machine_type -- String describing the platform to simulate
  78           num_cpus -- integer number of CPUs in the system
  79         """
  80         self.machine_type = machine_type
  81         self.num_cpus = kwargs.get('num_cpus', 1)
  82         self.mem_size = kwargs.get('mem_size', '256MB')
  83
  84     def create_system(self):
  85         sc = SysConfig(None, self.mem_size, None)
  86         system = FSConfig.makeArmSystem(self.mem_mode,
  87                                         self.machine_type, self.num_cpus,
  88                                         sc, False)
  89
  90         # We typically want the simulator to panic if the kernel
  91         # panics or oopses. This prevents the simulator from running
  92         # an obviously failed test case until the end of time.
  93         system.panic_on_panic = True
  94         system.panic_on_oops = True
  95
  96         self.init_system(system)
  97         return system
  98
  99 class LinuxArmFSSystem(LinuxArmSystemBuilder,
 100                        BaseFSSystem):
 101     """Basic ARM full system builder."""
 102
 103     def __init__(self, machine_type='VExpress_EMM', **kwargs):
 104         """Initialize an ARM system that supports full system simulation.
 105
 106         Note: Keyword arguments that are not listed below will be
 107         passed to the BaseFSSystem.
 108
 109         Keyword Arguments:
 110           machine_type -- String describing the platform to simulate
 111         """
 112         BaseSystem.__init__(self, **kwargs)
 113         LinuxArmSystemBuilder.__init__(self, machine_type, **kwargs)
 114
 115     def create_caches_private(self, cpu):
 116         # Use the more representative cache configuration
 117         cpu.addTwoLevelCacheHierarchy(O3_ARM_v7a_ICache(),
 118                                       O3_ARM_v7a_DCache(),
 119                                       O3_ARM_v7aL2())
 120
 121 class LinuxArmFSSystemUniprocessor(LinuxArmSystemBuilder,
 122                                    BaseFSSystemUniprocessor):
 123     """Basic ARM full system builder for uniprocessor systems.
 124
 125     Note: This class is a specialization of the ArmFSSystem and is
 126     only really needed to provide backwards compatibility for existing
 127     test cases.
 128     """
 129
 130     def __init__(self, machine_type='VExpress_EMM', **kwargs):
 131         BaseFSSystemUniprocessor.__init__(self, **kwargs)
 132         LinuxArmSystemBuilder.__init__(self, machine_type, **kwargs)
 133
 134 class LinuxArmFSSwitcheroo(LinuxArmSystemBuilder, BaseFSSwitcheroo):
 135     """Uniprocessor ARM system prepared for CPU switching"""
 136
 137     def __init__(self, machine_type='VExpress_EMM', **kwargs):
 138         BaseFSSwitcheroo.__init__(self, **kwargs)
 139         LinuxArmSystemBuilder.__init__(self, machine_type, **kwargs)