| # Copyright (c) 2012, 2017, 2019, 2022 Arm Limited |
| # All rights reserved. |
| # |
| # The license below extends only to copyright in the software and shall |
| # not be construed as granting a license to any other intellectual |
| # property including but not limited to intellectual property relating |
| # to a hardware implementation of the functionality of the software |
| # licensed hereunder. You may use the software subject to the license |
| # terms below provided that you ensure that this notice is replicated |
| # unmodified and in its entirety in all distributions of the software, |
| # modified or unmodified, in source code or in binary form. |
| # |
| # 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. |
| |
| from abc import ABCMeta, abstractmethod |
| import m5 |
| from m5.objects import * |
| from m5.proxy import * |
| |
| m5.util.addToPath("../configs/") |
| from common import FSConfig |
| from base_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, aarch64_kernel, enable_dvm, **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.aarch64_kernel = aarch64_kernel |
| self.enable_dvm = enable_dvm |
| 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 init_kvm(self, system): |
| """Do KVM-specific system initialization. |
| |
| Arguments: |
| system -- System to work on. |
| """ |
| system.kvm_vm = KvmVM() |
| system.release = ArmDefaultRelease.for_kvm() |
| |
| # Arm KVM regressions will use a simulated GIC. This means that in |
| # order to work we need to remove the system interface of the |
| # generic timer from the DTB and we need to inform the MuxingKvmGic |
| # class to use the gem5 GIC instead of relying on the host one |
| GenericTimer.generateDeviceTree = SimObject.generateDeviceTree |
| system.realview.gic.simulate_gic = True |
| |
| def create_system(self): |
| if self.aarch64_kernel: |
| gem5_kernel = "vmlinux.arm64" |
| try: |
| if issubclass(self.cpu_class, ArmV8KvmCPU): |
| disk_image = "m5_exit_addr.squashfs.arm64" |
| else: |
| disk_image = "m5_exit.squashfs.arm64" |
| except: |
| disk_image = "m5_exit.squashfs.arm64" |
| else: |
| gem5_kernel = "vmlinux.arm" |
| disk_image = "m5_exit.squashfs.arm" |
| |
| default_kernels = { |
| "VExpress_GEM5_V1": gem5_kernel, |
| "VExpress_GEM5_Foundation": gem5_kernel, |
| } |
| |
| sc = SysConfig(None, self.mem_size, [disk_image], "/dev/sda") |
| system = FSConfig.makeArmSystem( |
| self.mem_mode, |
| self.machine_type, |
| self.num_cpus, |
| sc, |
| ruby=self.use_ruby, |
| ) |
| |
| # TODO: This is removing SECURITY and VIRTUALIZATION extensions |
| # from AArch32 runs to fix long regressions. Find a fix or |
| # remove EL3/EL2 support at AArch32 |
| if not self.aarch64_kernel: |
| system.release = ArmRelease(extensions=["LPAE"]) |
| |
| # 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.workload.panic_on_panic = True |
| system.workload.panic_on_oops = True |
| |
| system.workload.object_file = SysPaths.binary( |
| default_kernels[self.machine_type] |
| ) |
| |
| self.init_system(system) |
| if self.enable_dvm: |
| for cpu in system.cpu: |
| for decoder in cpu.decoder: |
| decoder.dvm_enabled = True |
| |
| system.workload.dtb_filename = os.path.join( |
| m5.options.outdir, "system.dtb" |
| ) |
| system.generateDtb(system.workload.dtb_filename) |
| return system |
| |
| |
| class LinuxArmFSSystem(LinuxArmSystemBuilder, BaseFSSystem): |
| """Basic ARM full system builder.""" |
| |
| def __init__( |
| self, |
| machine_type="VExpress_GEM5_Foundation", |
| aarch64_kernel=True, |
| enable_dvm=False, |
| **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, aarch64_kernel, enable_dvm, **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_GEM5_Foundation", |
| aarch64_kernel=True, |
| **kwargs |
| ): |
| BaseFSSystemUniprocessor.__init__(self, **kwargs) |
| LinuxArmSystemBuilder.__init__( |
| self, machine_type, aarch64_kernel, False, **kwargs |
| ) |
| |
| |
| class LinuxArmFSSwitcheroo(LinuxArmSystemBuilder, BaseFSSwitcheroo): |
| """Uniprocessor ARM system prepared for CPU switching""" |
| |
| def __init__( |
| self, |
| machine_type="VExpress_GEM5_Foundation", |
| aarch64_kernel=True, |
| **kwargs |
| ): |
| BaseFSSwitcheroo.__init__(self, **kwargs) |
| LinuxArmSystemBuilder.__init__( |
| self, machine_type, aarch64_kernel, False, **kwargs |
| ) |