62ae85c0a2
Recent Linux kernels for AArch64 have changed their start addresses but we still want to relocate the kernel to 0x80080000 which required hacking the load_addr_mask in Realview.py to be 0x7ffffff from 0xfffffff to mask off the proper number of MSBs to load the kernel in the desired location. To avoid having to make this change in the future again, we auto-calculate the load_addr_mask if it is specified as 0x0 in the System sim-object to find the most restrictive address mask instead of having the configuration specify it. If the configuration does specify the address mask, we use it instead of auto-calculating. Change-Id: I18aabb5d09945c6e3e3819c9c8036ea24b6c35cf Signed-off-by: Geoffrey Blake <Geoffrey.Blake@arm.com> Reviewed-by: Curtis Dunham <curtis.dunham@arm.com> Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/2323 Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
126 lines
5.9 KiB
Python
126 lines
5.9 KiB
Python
# Copyright (c) 2017 ARM Limited
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# All rights reserved.
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#
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# The license below extends only to copyright in the software and shall
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# not be construed as granting a license to any other intellectual
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# property including but not limited to intellectual property relating
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# to a hardware implementation of the functionality of the software
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# licensed hereunder. You may use the software subject to the license
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# terms below provided that you ensure that this notice is replicated
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# unmodified and in its entirety in all distributions of the software,
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# modified or unmodified, in source code or in binary form.
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#
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# Copyright (c) 2005-2007 The Regents of The University of Michigan
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# Copyright (c) 2011 Regents of the University of California
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Authors: Nathan Binkert
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# Rick Strong
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from m5.SimObject import *
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from m5.defines import buildEnv
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from m5.params import *
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from m5.proxy import *
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from DVFSHandler import *
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from SimpleMemory import *
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class MemoryMode(Enum): vals = ['invalid', 'atomic', 'timing',
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'atomic_noncaching']
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class System(MemObject):
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type = 'System'
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cxx_header = "sim/system.hh"
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system_port = MasterPort("System port")
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cxx_exports = [
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PyBindMethod("getMemoryMode"),
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PyBindMethod("setMemoryMode"),
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]
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memories = VectorParam.AbstractMemory(Self.all,
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"All memories in the system")
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mem_mode = Param.MemoryMode('atomic', "The mode the memory system is in")
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thermal_model = Param.ThermalModel(NULL, "Thermal model")
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thermal_components = VectorParam.SimObject([],
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"A collection of all thermal components in the system.")
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# When reserving memory on the host, we have the option of
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# reserving swap space or not (by passing MAP_NORESERVE to
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# mmap). By enabling this flag, we accommodate cases where a large
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# (but sparse) memory is simulated.
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mmap_using_noreserve = Param.Bool(False, "mmap the backing store " \
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"without reserving swap")
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# The memory ranges are to be populated when creating the system
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# such that these can be passed from the I/O subsystem through an
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# I/O bridge or cache
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mem_ranges = VectorParam.AddrRange([], "Ranges that constitute main memory")
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cache_line_size = Param.Unsigned(64, "Cache line size in bytes")
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exit_on_work_items = Param.Bool(False, "Exit from the simulation loop when "
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"encountering work item annotations.")
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work_item_id = Param.Int(-1, "specific work item id")
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num_work_ids = Param.Int(16, "Number of distinct work item types")
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work_begin_cpu_id_exit = Param.Int(-1,
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"work started on specific id, now exit simulation")
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work_begin_ckpt_count = Param.Counter(0,
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"create checkpoint when work items begin count value is reached")
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work_begin_exit_count = Param.Counter(0,
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"exit simulation when work items begin count value is reached")
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work_end_ckpt_count = Param.Counter(0,
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"create checkpoint when work items end count value is reached")
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work_end_exit_count = Param.Counter(0,
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"exit simulation when work items end count value is reached")
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work_cpus_ckpt_count = Param.Counter(0,
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"create checkpoint when active cpu count value is reached")
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init_param = Param.UInt64(0, "numerical value to pass into simulator")
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boot_osflags = Param.String("a", "boot flags to pass to the kernel")
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kernel = Param.String("", "file that contains the kernel code")
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kernel_addr_check = Param.Bool(True,
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"whether to address check on kernel (disable for baremetal)")
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kernel_extras = VectorParam.String([],"Additional object files to load")
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readfile = Param.String("", "file to read startup script from")
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symbolfile = Param.String("", "file to get the symbols from")
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load_addr_mask = Param.UInt64(0xffffffffffffffff,
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"Address to mask loading binaries with, if 0, system "
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"auto-calculates the mask to be the most restrictive, "
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"otherwise it obeys a custom mask.")
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load_offset = Param.UInt64(0, "Address to offset loading binaries with")
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multi_thread = Param.Bool(False,
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"Supports multi-threaded CPUs? Impacts Thread/Context IDs")
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# Dynamic voltage and frequency handler for the system, disabled by default
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# Provide list of domains that need to be controlled by the handler
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dvfs_handler = DVFSHandler()
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if buildEnv['USE_KVM']:
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kvm_vm = Param.KvmVM(NULL, 'KVM VM (i.e., shared memory domain)')
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