arm, config: Automatically discover available platforms
Add support for automatically discover available platforms. The Python-side uses functionality similar to what we use when auto-detecting available CPU models. The machine IDs have been updated to match the platform configurations. If there isn't a matching machine ID, the configuration scripts default to -1 which Linux uses for device tree only platforms.
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4 changed files with 161 additions and 27 deletions
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@ -42,6 +42,7 @@
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from m5.objects import *
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from m5.objects import *
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from Benchmarks import *
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from Benchmarks import *
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from m5.util import *
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from m5.util import *
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import PlatformConfig
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# Populate to reflect supported os types per target ISA
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# Populate to reflect supported os types per target ISA
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os_types = { 'alpha' : [ 'linux' ],
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os_types = { 'alpha' : [ 'linux' ],
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@ -207,6 +208,20 @@ def makeArmSystem(mem_mode, machine_type, num_cpus=1, mdesc=None,
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external_memory=""):
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external_memory=""):
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assert machine_type
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assert machine_type
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default_dtbs = {
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"RealViewEB": None,
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"RealViewPBX": None,
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"VExpress_EMM": "vexpress.aarch32.ll_20131205.0-gem5.%dcpu.dtb" % num_cpus,
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"VExpress_EMM64": "vexpress.aarch64.20140821.dtb",
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}
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default_kernels = {
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"RealViewEB": "vmlinux.arm.smp.fb.2.6.38.8",
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"RealViewPBX": "vmlinux.arm.smp.fb.2.6.38.8",
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"VExpress_EMM": "vmlinux.aarch32.ll_20131205.0-gem5",
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"VExpress_EMM64": "vmlinux.aarch64.20140821",
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}
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if bare_metal:
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if bare_metal:
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self = ArmSystem()
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self = ArmSystem()
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else:
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else:
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@ -226,24 +241,23 @@ def makeArmSystem(mem_mode, machine_type, num_cpus=1, mdesc=None,
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self.mem_mode = mem_mode
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self.mem_mode = mem_mode
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if machine_type == "RealView_PBX":
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platform_class = PlatformConfig.get(machine_type)
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self.realview = RealViewPBX()
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# Resolve the real platform name, the original machine_type
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elif machine_type == "RealView_EB":
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# variable might have been an alias.
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self.realview = RealViewEB()
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machine_type = platform_class.__name__
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elif machine_type == "VExpress_EMM":
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self.realview = platform_class()
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self.realview = VExpress_EMM()
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if not dtb_filename:
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if not dtb_filename and not bare_metal:
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dtb_filename = 'vexpress.aarch32.ll_20131205.0-gem5.%dcpu.dtb' % num_cpus
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try:
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elif machine_type == "VExpress_EMM64":
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dtb_filename = default_dtbs[machine_type]
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self.realview = VExpress_EMM64()
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except KeyError:
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fatal("No DTB specified and no default DTB known for '%s'" % \
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machine_type)
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if isinstance(self.realview, VExpress_EMM64):
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if os.path.split(mdesc.disk())[-1] == 'linux-aarch32-ael.img':
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if os.path.split(mdesc.disk())[-1] == 'linux-aarch32-ael.img':
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print "Selected 64-bit ARM architecture, updating default disk image..."
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print "Selected 64-bit ARM architecture, updating default disk image..."
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mdesc.diskname = 'linaro-minimal-aarch64.img'
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mdesc.diskname = 'linaro-minimal-aarch64.img'
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if not dtb_filename:
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dtb_filename = 'vexpress.aarch64.20140821.dtb'
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else:
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print "Unknown Machine Type"
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sys.exit(1)
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self.cf0 = CowIdeDisk(driveID='master')
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self.cf0 = CowIdeDisk(driveID='master')
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self.cf0.childImage(mdesc.disk())
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self.cf0.childImage(mdesc.disk())
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@ -278,16 +292,15 @@ def makeArmSystem(mem_mode, machine_type, num_cpus=1, mdesc=None,
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# EOT character on UART will end the simulation
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# EOT character on UART will end the simulation
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self.realview.uart.end_on_eot = True
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self.realview.uart.end_on_eot = True
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else:
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else:
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if machine_type == "VExpress_EMM64":
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if machine_type in default_kernels:
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self.kernel = binary('vmlinux.aarch64.20140821')
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self.kernel = binary(default_kernels[machine_type])
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elif machine_type == "VExpress_EMM":
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self.kernel = binary('vmlinux.aarch32.ll_20131205.0-gem5')
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else:
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self.kernel = binary('vmlinux.arm.smp.fb.2.6.38.8')
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if dtb_filename:
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if dtb_filename:
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self.dtb_filename = binary(dtb_filename)
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self.dtb_filename = binary(dtb_filename)
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self.machine_type = machine_type
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self.machine_type = machine_type if machine_type in ArmMachineType.map \
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else "DTOnly"
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# Ensure that writes to the UART actually go out early in the boot
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# Ensure that writes to the UART actually go out early in the boot
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if not cmdline:
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if not cmdline:
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cmdline = 'earlyprintk=pl011,0x1c090000 console=ttyAMA0 ' + \
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cmdline = 'earlyprintk=pl011,0x1c090000 console=ttyAMA0 ' + \
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@ -45,6 +45,7 @@ from Benchmarks import *
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import CpuConfig
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import CpuConfig
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import MemConfig
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import MemConfig
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import PlatformConfig
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from FSConfig import os_types
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from FSConfig import os_types
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@ -56,6 +57,10 @@ def _listMemTypes(option, opt, value, parser):
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MemConfig.print_mem_list()
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MemConfig.print_mem_list()
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sys.exit(0)
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sys.exit(0)
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def _listPlatformTypes(option, opt, value, parser):
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PlatformConfig.print_platform_list()
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sys.exit(0)
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def addCommonOptions(parser):
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def addCommonOptions(parser):
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# system options
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# system options
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parser.add_option("--list-cpu-types",
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parser.add_option("--list-cpu-types",
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@ -263,8 +268,12 @@ def addFSOptions(parser):
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if buildEnv['TARGET_ISA'] == "arm":
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if buildEnv['TARGET_ISA'] == "arm":
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parser.add_option("--bare-metal", action="store_true",
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parser.add_option("--bare-metal", action="store_true",
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help="Provide the raw system without the linux specific bits")
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help="Provide the raw system without the linux specific bits")
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parser.add_option("--list-machine-types",
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action="callback", callback=_listPlatformTypes,
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help="List available platform types")
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parser.add_option("--machine-type", action="store", type="choice",
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parser.add_option("--machine-type", action="store", type="choice",
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choices=ArmMachineType.map.keys(), default="VExpress_EMM")
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choices=PlatformConfig.platform_names(),
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default="VExpress_EMM")
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parser.add_option("--dtb-filename", action="store", type="string",
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parser.add_option("--dtb-filename", action="store", type="string",
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help="Specifies device tree blob file to use with device-tree-"\
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help="Specifies device tree blob file to use with device-tree-"\
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"enabled kernels")
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"enabled kernels")
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109
configs/common/PlatformConfig.py
Normal file
109
configs/common/PlatformConfig.py
Normal file
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@ -0,0 +1,109 @@
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# Copyright (c) 2012, 2015 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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# 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: Andreas Sandberg
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import m5.objects
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import inspect
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import sys
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from textwrap import TextWrapper
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# Dictionary of mapping names of real CPU models to classes.
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_platform_classes = {}
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# Platform aliases. The platforms listed here might not be compiled,
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# we make sure they exist before we add them to the platform list.
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_platform_aliases_all = [
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("RealView_EB", "RealViewEB"),
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("RealView_PBX", "RealViewPBX"),
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]
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# Filtered list of aliases. Only aliases for existing platforms exist
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# in this list.
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_platform_aliases = {}
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def is_platform_class(cls):
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"""Determine if a class is a Platform that can be instantiated"""
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# We can't use the normal inspect.isclass because the ParamFactory
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# and ProxyFactory classes have a tendency to confuse it.
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try:
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return issubclass(cls, m5.objects.Platform) and \
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not cls.abstract
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except TypeError:
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return False
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def get(name):
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"""Get a platform class from a user provided class name."""
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real_name = _platform_aliases.get(name, name)
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try:
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return _platform_classes[real_name]
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except KeyError:
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print "%s is not a valid Platform model." % (name,)
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sys.exit(1)
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def print_platform_list():
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"""Print a list of available Platform classes including their aliases."""
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print "Available Platform classes:"
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doc_wrapper = TextWrapper(initial_indent="\t\t", subsequent_indent="\t\t")
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for name, cls in _platform_classes.items():
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print "\t%s" % name
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# Try to extract the class documentation from the class help
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# string.
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doc = inspect.getdoc(cls)
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if doc:
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for line in doc_wrapper.wrap(doc):
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print line
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if _platform_aliases:
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print "\Platform aliases:"
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for alias, target in _platform_aliases.items():
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print "\t%s => %s" % (alias, target)
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def platform_names():
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"""Return a list of valid Platform names."""
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return _platform_classes.keys() + _platform_aliases.keys()
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# Add all Platforms in the object hierarchy.
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for name, cls in inspect.getmembers(m5.objects, is_platform_class):
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_platform_classes[name] = cls
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for alias, target in _platform_aliases_all:
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if target in _platform_classes:
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_platform_aliases[alias] = target
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@ -40,10 +40,13 @@ from m5.params import *
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from System import System
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from System import System
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class ArmMachineType(Enum):
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class ArmMachineType(Enum):
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map = {'RealView_EB' : 827,
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map = {
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'RealView_PBX' : 1901,
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'RealViewEB' : 827,
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'RealViewPBX' : 1901,
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'VExpress_EMM' : 2272,
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'VExpress_EMM' : 2272,
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'VExpress_EMM64' : 2272}
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'VExpress_EMM64' : 2272,
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'DTOnly' : -1,
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}
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class ArmSystem(System):
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class ArmSystem(System):
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type = 'ArmSystem'
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type = 'ArmSystem'
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