arm_generic.py revision 12070 
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36# Authors: Andreas Sandberg
37
38from abc import ABCMeta, abstractmethod
39import m5
40from m5.objects import *
41from m5.proxy import *
42m5.util.addToPath('../configs/')
43from common import FSConfig
44from common.Caches import *
45from base_config import *
46from common.O3_ARM_v7a import *
47from common.Benchmarks import SysConfig
48
49class 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
67class 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          use_ruby -- True if ruby is used instead of the classic memory system
80        """
81        self.machine_type = machine_type
82        self.num_cpus = kwargs.get('num_cpus', 1)
83        self.mem_size = kwargs.get('mem_size', '256MB')
84        self.use_ruby = kwargs.get('use_ruby', False)
85
86    def create_system(self):
87        sc = SysConfig(None, self.mem_size, None)
88        system = FSConfig.makeArmSystem(self.mem_mode,
89                                        self.machine_type, self.num_cpus,
90                                        sc, False, ruby=self.use_ruby)
91
92        # We typically want the simulator to panic if the kernel
93        # panics or oopses. This prevents the simulator from running
94        # an obviously failed test case until the end of time.
95        system.panic_on_panic = True
96        system.panic_on_oops = True
97
98        self.init_system(system)
99        return system
100
101class LinuxArmFSSystem(LinuxArmSystemBuilder,
102                       BaseFSSystem):
103    """Basic ARM full system builder."""
104
105    def __init__(self, machine_type='VExpress_EMM', **kwargs):
106        """Initialize an ARM system that supports full system simulation.
107
108        Note: Keyword arguments that are not listed below will be
109        passed to the BaseFSSystem.
110
111        Keyword Arguments:
112          machine_type -- String describing the platform to simulate
113        """
114        BaseSystem.__init__(self, **kwargs)
115        LinuxArmSystemBuilder.__init__(self, machine_type, **kwargs)
116
117    def create_caches_private(self, cpu):
118        # Use the more representative cache configuration
119        cpu.addTwoLevelCacheHierarchy(O3_ARM_v7a_ICache(),
120                                      O3_ARM_v7a_DCache(),
121                                      O3_ARM_v7aL2())
122
123class LinuxArmFSSystemUniprocessor(LinuxArmSystemBuilder,
124                                   BaseFSSystemUniprocessor):
125    """Basic ARM full system builder for uniprocessor systems.
126
127    Note: This class is a specialization of the ArmFSSystem and is
128    only really needed to provide backwards compatibility for existing
129    test cases.
130    """
131
132    def __init__(self, machine_type='VExpress_EMM', **kwargs):
133        BaseFSSystemUniprocessor.__init__(self, **kwargs)
134        LinuxArmSystemBuilder.__init__(self, machine_type, **kwargs)
135
136class LinuxArmFSSwitcheroo(LinuxArmSystemBuilder, BaseFSSwitcheroo):
137    """Uniprocessor ARM system prepared for CPU switching"""
138
139    def __init__(self, machine_type='VExpress_EMM', **kwargs):
140        BaseFSSwitcheroo.__init__(self, **kwargs)
141        LinuxArmSystemBuilder.__init__(self, machine_type, **kwargs)
142