6f6adbf0f6
This patch changes the default system clock from 1THz to 1GHz. This clock is used by all modules that do not override the default (parent clock), and primarily affects the IO subsystem. Every DMA device uses its clock to schedule the next transfer, and the change will thus cause this inter-transfer delay to be longer. The default clock of the bus is removed, as the clock inherited from the system provides exactly the same value. A follow-on patch will bump the stats.
86 lines
3.8 KiB
Python
86 lines
3.8 KiB
Python
# Copyright (c) 2005-2007 The Regents of The University of Michigan
|
|
# Copyright (c) 2011 Regents of the University of California
|
|
# All rights reserved.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions are
|
|
# met: redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer;
|
|
# redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution;
|
|
# neither the name of the copyright holders nor the names of its
|
|
# contributors may be used to endorse or promote products derived from
|
|
# this software without specific prior written permission.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
#
|
|
# Authors: Nathan Binkert
|
|
# Rick Strong
|
|
|
|
from m5.SimObject import SimObject
|
|
from m5.defines import buildEnv
|
|
from m5.params import *
|
|
from m5.proxy import *
|
|
|
|
from SimpleMemory import *
|
|
|
|
class MemoryMode(Enum): vals = ['invalid', 'atomic', 'timing']
|
|
|
|
class System(MemObject):
|
|
type = 'System'
|
|
system_port = MasterPort("System port")
|
|
|
|
# Override the clock from the ClockedObject which looks at the
|
|
# parent clock by default. The 1 GHz default system clock serves
|
|
# as a start for the modules that rely on the parent to provide
|
|
# the clock.
|
|
clock = '1GHz'
|
|
|
|
@classmethod
|
|
def export_method_cxx_predecls(cls, code):
|
|
code('#include "sim/system.hh"')
|
|
|
|
@classmethod
|
|
def export_methods(cls, code):
|
|
code('''
|
|
Enums::MemoryMode getMemoryMode();
|
|
void setMemoryMode(Enums::MemoryMode mode);
|
|
''')
|
|
|
|
memories = VectorParam.AbstractMemory(Self.all,
|
|
"All memories in the system")
|
|
mem_mode = Param.MemoryMode('atomic', "The mode the memory system is in")
|
|
work_item_id = Param.Int(-1, "specific work item id")
|
|
num_work_ids = Param.Int(16, "Number of distinct work item types")
|
|
work_begin_cpu_id_exit = Param.Int(-1,
|
|
"work started on specific id, now exit simulation")
|
|
work_begin_ckpt_count = Param.Counter(0,
|
|
"create checkpoint when work items begin count value is reached")
|
|
work_begin_exit_count = Param.Counter(0,
|
|
"exit simulation when work items begin count value is reached")
|
|
work_end_ckpt_count = Param.Counter(0,
|
|
"create checkpoint when work items end count value is reached")
|
|
work_end_exit_count = Param.Counter(0,
|
|
"exit simulation when work items end count value is reached")
|
|
work_cpus_ckpt_count = Param.Counter(0,
|
|
"create checkpoint when active cpu count value is reached")
|
|
|
|
init_param = Param.UInt64(0, "numerical value to pass into simulator")
|
|
boot_osflags = Param.String("a", "boot flags to pass to the kernel")
|
|
kernel = Param.String("", "file that contains the kernel code")
|
|
readfile = Param.String("", "file to read startup script from")
|
|
symbolfile = Param.String("", "file to get the symbols from")
|
|
load_addr_mask = Param.UInt64(0xffffffffff,
|
|
"Address to mask loading binaries with");
|