1 # Copyright (c) 2017, 2019 ARM Limited
4 # The license below extends only to copyright in the software and shall
5 # not be construed as granting a license to any other intellectual
6 # property including but not limited to intellectual property relating
7 # to a hardware implementation of the functionality of the software
8 # licensed hereunder. You may use the software subject to the license
9 # terms below provided that you ensure that this notice is replicated
10 # unmodified and in its entirety in all distributions of the software,
11 # modified or unmodified, in source code or in binary form.
13 # Copyright (c) 2005-2007 The Regents of The University of Michigan
14 # Copyright (c) 2011 Regents of the University of California
15 # All rights reserved.
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18 # modification, are permitted provided that the following conditions are
19 # met: redistributions of source code must retain the above copyright
20 # notice, this list of conditions and the following disclaimer;
21 # redistributions in binary form must reproduce the above copyright
22 # notice, this list of conditions and the following disclaimer in the
23 # documentation and/or other materials provided with the distribution;
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25 # contributors may be used to endorse or promote products derived from
26 # this software without specific prior written permission.
28 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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34 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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38 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 # Authors: Nathan Binkert
43 from m5
.SimObject
import *
44 from m5
.defines
import buildEnv
45 from m5
.params
import *
46 from m5
.proxy
import *
48 from m5
.objects
.DVFSHandler
import *
49 from m5
.objects
.SimpleMemory
import *
51 class MemoryMode(Enum
): vals
= ['invalid', 'atomic', 'timing',
54 class System(SimObject
):
56 cxx_header
= "sim/system.hh"
57 system_port
= MasterPort("System port")
60 PyBindMethod("getMemoryMode"),
61 PyBindMethod("setMemoryMode"),
64 memories
= VectorParam
.AbstractMemory(Self
.all
,
65 "All memories in the system")
66 mem_mode
= Param
.MemoryMode('atomic', "The mode the memory system is in")
68 thermal_model
= Param
.ThermalModel(NULL
, "Thermal model")
69 thermal_components
= VectorParam
.SimObject([],
70 "A collection of all thermal components in the system.")
72 # When reserving memory on the host, we have the option of
73 # reserving swap space or not (by passing MAP_NORESERVE to
74 # mmap). By enabling this flag, we accommodate cases where a large
75 # (but sparse) memory is simulated.
76 mmap_using_noreserve
= Param
.Bool(False, "mmap the backing store " \
77 "without reserving swap")
79 # The memory ranges are to be populated when creating the system
80 # such that these can be passed from the I/O subsystem through an
82 mem_ranges
= VectorParam
.AddrRange([], "Ranges that constitute main memory")
84 cache_line_size
= Param
.Unsigned(64, "Cache line size in bytes")
86 redirect_paths
= VectorParam
.RedirectPath([], "Path redirections")
88 exit_on_work_items
= Param
.Bool(False, "Exit from the simulation loop when "
89 "encountering work item annotations.")
90 work_item_id
= Param
.Int(-1, "specific work item id")
91 num_work_ids
= Param
.Int(16, "Number of distinct work item types")
92 work_begin_cpu_id_exit
= Param
.Int(-1,
93 "work started on specific id, now exit simulation")
94 work_begin_ckpt_count
= Param
.Counter(0,
95 "create checkpoint when work items begin count value is reached")
96 work_begin_exit_count
= Param
.Counter(0,
97 "exit simulation when work items begin count value is reached")
98 work_end_ckpt_count
= Param
.Counter(0,
99 "create checkpoint when work items end count value is reached")
100 work_end_exit_count
= Param
.Counter(0,
101 "exit simulation when work items end count value is reached")
102 work_cpus_ckpt_count
= Param
.Counter(0,
103 "create checkpoint when active cpu count value is reached")
105 init_param
= Param
.UInt64(0, "numerical value to pass into simulator")
106 boot_osflags
= Param
.String("a", "boot flags to pass to the kernel")
107 kernel
= Param
.String("", "file that contains the kernel code")
108 kernel_addr_check
= Param
.Bool(True,
109 "whether to address check on kernel (disable for baremetal)")
110 kernel_extras
= VectorParam
.String([], "Additional object files to load")
111 kernel_extras_addrs
= VectorParam
.Addr([],
112 "Load addresses for additional object files")
113 readfile
= Param
.String("", "file to read startup script from")
114 symbolfile
= Param
.String("", "file to get the symbols from")
115 load_addr_mask
= Param
.UInt64(0xffffffffffffffff,
116 "Address to mask loading binaries with, if 0, system "
117 "auto-calculates the mask to be the most restrictive, "
118 "otherwise it obeys a custom mask.")
119 load_offset
= Param
.UInt64(0, "Address to offset loading binaries with")
121 multi_thread
= Param
.Bool(False,
122 "Supports multi-threaded CPUs? Impacts Thread/Context IDs")
124 # Dynamic voltage and frequency handler for the system, disabled by default
125 # Provide list of domains that need to be controlled by the handler
126 dvfs_handler
= DVFSHandler()
128 if buildEnv
['USE_KVM']:
129 kvm_vm
= Param
.KvmVM(NULL
, 'KVM VM (i.e., shared memory domain)')