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# 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.
#
# Copyright (c) 2021 Huawei International
# Copyright (c) 2012-2014 Mark D. Hill and David A. Wood
# Copyright (c) 2009-2011 Advanced Micro Devices, Inc.
# Copyright (c) 2006-2007 The Regents of The University of Michigan
# 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
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import argparse
import sys
from os import path
import m5
from m5.defines import buildEnv
from m5.objects import *
from m5.util import addToPath, fatal, warn
from m5.util.fdthelper import *
addToPath('../../')
from ruby import Ruby
from common.FSConfig import *
from common.SysPaths import *
from common.Benchmarks import *
from common import Simulation
from common import CacheConfig
from common import CpuConfig
from common import MemConfig
from common import ObjectList
from common.Caches import *
from common import Options
# ------------------------- Usage Instructions ------------------------- #
# Common system confirguration options (cpu types, num cpus, checkpointing
# etc.) should be supported
#
# Ruby not supported in this config file. Not tested on RISC-V FS Linux (as
# of 25 March 2021).
#
# Options (Full System):
# --kernel (required): Bootloader + kernel binary (e.g. bbl with
# linux kernel payload)
# --disk-image (optional): Path to disk image file. Not needed if using
# ramfs (might run into issues though).
# --virtio-rng (optional): Enable VirtIO entropy source device
# --command-line (optional): Specify to override default.
# --dtb-filename (optional): Path to DTB file. Auto-generated if empty.
# --bare-metal (boolean): Use baremetal Riscv (default False). Use this
# if bbl is built with "--with-dts" option.
# (do not forget to include bootargs in dts file)
#
# Not Used:
# --command-line-file, --script, --frame-capture, --os-type, --timesync,
# --dual, -b, --etherdump, --root-device, --ruby
# ----------------------- DTB Generation Function ---------------------- #
def generateMemNode(state, mem_range):
node = FdtNode("memory@%x" % int(mem_range.start))
node.append(FdtPropertyStrings("device_type", ["memory"]))
node.append(FdtPropertyWords("reg",
state.addrCells(mem_range.start) +
state.sizeCells(mem_range.size()) ))
return node
def generateDtb(system):
state = FdtState(addr_cells=2, size_cells=2, cpu_cells=1)
root = FdtNode('/')
root.append(state.addrCellsProperty())
root.append(state.sizeCellsProperty())
root.appendCompatible(["riscv-virtio"])
for mem_range in system.mem_ranges:
root.append(generateMemNode(state, mem_range))
sections = [*system.cpu, system.platform]
for section in sections:
for node in section.generateDeviceTree(state):
if node.get_name() == root.get_name():
root.merge(node)
else:
root.append(node)
fdt = Fdt()
fdt.add_rootnode(root)
fdt.writeDtsFile(path.join(m5.options.outdir, 'device.dts'))
fdt.writeDtbFile(path.join(m5.options.outdir, 'device.dtb'))
# ----------------------------- Add Options ---------------------------- #
parser = argparse.ArgumentParser()
Options.addCommonOptions(parser)
Options.addFSOptions(parser)
parser.add_argument("--bare-metal", action="store_true",
help="Provide the raw system without the linux specific bits")
parser.add_argument("--dtb-filename", action="store", type=str,
help="Specifies device tree blob file to use with device-tree-"\
"enabled kernels")
parser.add_argument("--virtio-rng", action="store_true",
help="Enable VirtIORng device")
# ---------------------------- Parse Options --------------------------- #
args = parser.parse_args()
# CPU and Memory
(CPUClass, mem_mode, FutureClass) = Simulation.setCPUClass(args)
MemClass = Simulation.setMemClass(args)
np = args.num_cpus
# ---------------------------- Setup System ---------------------------- #
# Default Setup
system = System()
mdesc = SysConfig(disks=args.disk_image, rootdev=args.root_device,
mem=args.mem_size, os_type=args.os_type)
system.mem_mode = mem_mode
system.mem_ranges = [AddrRange(start=0x80000000, size=mdesc.mem())]
if args.bare_metal:
system.workload = RiscvBareMetal()
system.workload.bootloader = args.kernel
else:
system.workload = RiscvLinux()
system.workload.object_file = args.kernel
system.iobus = IOXBar()
system.membus = MemBus()
system.system_port = system.membus.cpu_side_ports
# HiFive Platform
system.platform = HiFive()
# RTCCLK (Set to 100MHz for faster simulation)
system.platform.rtc = RiscvRTC(frequency=Frequency("100MHz"))
system.platform.clint.int_pin = system.platform.rtc.int_pin
# VirtIOMMIO
if args.disk_image:
image = CowDiskImage(child=RawDiskImage(read_only=True), read_only=False)
image.child.image_file = mdesc.disks()[0]
system.platform.disk = RiscvMmioVirtIO(
vio=VirtIOBlock(image=image),
interrupt_id=0x8,
pio_size=4096,
pio_addr=0x10008000
)
# VirtIORng
if args.virtio_rng:
system.platform.rng = RiscvMmioVirtIO(
vio=VirtIORng(),
interrupt_id=0x8,
pio_size=4096,
pio_addr=0x10007000
)
system.bridge = Bridge(delay='50ns')
system.bridge.mem_side_port = system.iobus.cpu_side_ports
system.bridge.cpu_side_port = system.membus.mem_side_ports
system.bridge.ranges = system.platform._off_chip_ranges()
system.platform.attachOnChipIO(system.membus)
system.platform.attachOffChipIO(system.iobus)
system.platform.attachPlic()
system.platform.setNumCores(np)
# ---------------------------- Default Setup --------------------------- #
# Set the cache line size for the entire system
system.cache_line_size = args.cacheline_size
# Create a top-level voltage domain
system.voltage_domain = VoltageDomain(voltage = args.sys_voltage)
# Create a source clock for the system and set the clock period
system.clk_domain = SrcClockDomain(clock = args.sys_clock,
voltage_domain = system.voltage_domain)
# Create a CPU voltage domain
system.cpu_voltage_domain = VoltageDomain()
# Create a source clock for the CPUs and set the clock period
system.cpu_clk_domain = SrcClockDomain(clock = args.cpu_clock,
voltage_domain =
system.cpu_voltage_domain)
system.workload.object_file = args.kernel
# NOTE: Not yet tested
if args.script is not None:
system.readfile = args.script
system.init_param = args.init_param
system.cpu = [CPUClass(clk_domain=system.cpu_clk_domain, cpu_id=i)
for i in range(np)]
if args.caches or args.l2cache:
# By default the IOCache runs at the system clock
system.iocache = IOCache(addr_ranges = system.mem_ranges)
system.iocache.cpu_side = system.iobus.mem_side_ports
system.iocache.mem_side = system.membus.cpu_side_ports
elif not args.external_memory_system:
system.iobridge = Bridge(delay='50ns', ranges = system.mem_ranges)
system.iobridge.cpu_side_port = system.iobus.mem_side_ports
system.iobridge.mem_side_port = system.membus.cpu_side_ports
# Sanity check
if args.simpoint_profile:
if not ObjectList.is_noncaching_cpu(CPUClass):
fatal("SimPoint generation should be done with atomic cpu")
if np > 1:
fatal("SimPoint generation not supported with more than one CPUs")
for i in range(np):
if args.simpoint_profile:
system.cpu[i].addSimPointProbe(args.simpoint_interval)
if args.checker:
system.cpu[i].addCheckerCpu()
if not ObjectList.is_kvm_cpu(CPUClass):
if args.bp_type:
bpClass = ObjectList.bp_list.get(args.bp_type)
system.cpu[i].branchPred = bpClass()
if args.indirect_bp_type:
IndirectBPClass = ObjectList.indirect_bp_list.get(
args.indirect_bp_type)
system.cpu[i].branchPred.indirectBranchPred = \
IndirectBPClass()
system.cpu[i].createThreads()
# ----------------------------- PMA Checker ---------------------------- #
uncacheable_range = [
*system.platform._on_chip_ranges(),
*system.platform._off_chip_ranges()
]
# PMA checker can be defined at system-level (system.pma_checker)
# or MMU-level (system.cpu[0].mmu.pma_checker). It will be resolved
# by RiscvTLB's Parent.any proxy
for cpu in system.cpu:
cpu.mmu.pma_checker = PMAChecker(uncacheable=uncacheable_range)
# --------------------------- DTB Generation --------------------------- #
if not args.bare_metal:
if args.dtb_filename:
system.workload.dtb_filename = args.dtb_filename
else:
generateDtb(system)
system.workload.dtb_filename = path.join(
m5.options.outdir, 'device.dtb')
# Default DTB address if bbl is bulit with --with-dts option
system.workload.dtb_addr = 0x87e00000
# Linux boot command flags
if args.command_line:
system.workload.command_line = args.command_line
else:
kernel_cmd = [
"console=ttyS0",
"root=/dev/vda",
"ro"
]
system.workload.command_line = " ".join(kernel_cmd)
# ---------------------------- Default Setup --------------------------- #
if args.elastic_trace_en and args.checkpoint_restore == None and \
not args.fast_forward:
CpuConfig.config_etrace(CPUClass, system.cpu, args)
CacheConfig.config_cache(args, system)
MemConfig.config_mem(args, system)
root = Root(full_system=True, system=system)
Simulation.setWorkCountOptions(system, args)
Simulation.run(args, root, system, FutureClass)