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# Copyright (c) 2012, 2017, 2019 ARM Limited
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# Authors: Andreas Sandberg
from abc import ABCMeta, abstractmethod
import m5
from m5.objects import *
from m5.proxy import *
m5.util.addToPath('../configs/')
from common import FSConfig
from common.Caches import *
from base_config import *
from common.cores.arm.O3_ARM_v7a import *
from common.Benchmarks import SysConfig
from common import SysPaths
class ArmSESystemUniprocessor(BaseSESystemUniprocessor):
"""Syscall-emulation builder for ARM uniprocessor systems.
A small tweak of the syscall-emulation builder to use more
representative cache configurations.
"""
def __init__(self, **kwargs):
super(ArmSESystemUniprocessor, self).__init__(**kwargs)
def create_caches_private(self, cpu):
# The atomic SE configurations do not use caches
if self.mem_mode == "timing":
# Use the more representative cache configuration
cpu.addTwoLevelCacheHierarchy(O3_ARM_v7a_ICache(),
O3_ARM_v7a_DCache(),
O3_ARM_v7aL2())
class LinuxArmSystemBuilder(object):
"""Mix-in that implements create_system.
This mix-in is intended as a convenient way of adding an
ARM-specific create_system method to a class deriving from one of
the generic base systems.
"""
def __init__(self, machine_type, **kwargs):
"""
Arguments:
machine_type -- String describing the platform to simulate
num_cpus -- integer number of CPUs in the system
use_ruby -- True if ruby is used instead of the classic memory system
"""
self.machine_type = machine_type
self.num_cpus = kwargs.get('num_cpus', 1)
self.mem_size = kwargs.get('mem_size', '256MB')
self.use_ruby = kwargs.get('use_ruby', False)
def create_system(self):
sc = SysConfig(None, self.mem_size, None)
system = FSConfig.makeArmSystem(self.mem_mode,
self.machine_type, self.num_cpus,
sc, False, ruby=self.use_ruby)
# We typically want the simulator to panic if the kernel
# panics or oopses. This prevents the simulator from running
# an obviously failed test case until the end of time.
system.panic_on_panic = True
system.panic_on_oops = True
default_kernels = {
"VExpress_EMM": "vmlinux.aarch32.ll_20131205.0-gem5",
"VExpress_EMM64": "vmlinux.aarch64.20140821",
}
system.kernel = SysPaths.binary(default_kernels[self.machine_type])
default_dtbs = {
"VExpress_EMM": "vexpress.aarch32.ll_20131205.0-gem5.{}cpu.dtb" \
.format(self.num_cpus),
"VExpress_EMM64": "vexpress.aarch64.20140821.dtb",
}
system.dtb_filename = SysPaths.binary(default_dtbs[self.machine_type])
self.init_system(system)
return system
class LinuxArmFSSystem(LinuxArmSystemBuilder,
BaseFSSystem):
"""Basic ARM full system builder."""
def __init__(self, machine_type='VExpress_EMM', **kwargs):
"""Initialize an ARM system that supports full system simulation.
Note: Keyword arguments that are not listed below will be
passed to the BaseFSSystem.
Keyword Arguments:
machine_type -- String describing the platform to simulate
"""
BaseFSSystem.__init__(self, **kwargs)
LinuxArmSystemBuilder.__init__(self, machine_type, **kwargs)
def create_caches_private(self, cpu):
# Use the more representative cache configuration
cpu.addTwoLevelCacheHierarchy(O3_ARM_v7a_ICache(),
O3_ARM_v7a_DCache(),
O3_ARM_v7aL2())
class LinuxArmFSSystemUniprocessor(LinuxArmSystemBuilder,
BaseFSSystemUniprocessor):
"""Basic ARM full system builder for uniprocessor systems.
Note: This class is a specialization of the ArmFSSystem and is
only really needed to provide backwards compatibility for existing
test cases.
"""
def __init__(self, machine_type='VExpress_EMM', **kwargs):
BaseFSSystemUniprocessor.__init__(self, **kwargs)
LinuxArmSystemBuilder.__init__(self, machine_type, **kwargs)
class LinuxArmFSSwitcheroo(LinuxArmSystemBuilder, BaseFSSwitcheroo):
"""Uniprocessor ARM system prepared for CPU switching"""
def __init__(self, machine_type='VExpress_EMM', **kwargs):
BaseFSSwitcheroo.__init__(self, **kwargs)
LinuxArmSystemBuilder.__init__(self, machine_type, **kwargs)