gem5/configs/example/fs.py

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# Authors: Ali Saidi

import optparse
import sys

import m5
from m5.defines import buildEnv
from m5.objects import *
from m5.util import addToPath, fatal

addToPath('../common')

from FSConfig import *
from SysPaths import *
from Benchmarks import *
import Simulation
import CacheConfig
import MemConfig
from Caches import *
import Options

parser = optparse.OptionParser()
Options.addCommonOptions(parser)
Options.addFSOptions(parser)

(options, args) = parser.parse_args()

if args:
    print "Error: script doesn't take any positional arguments"
    sys.exit(1)

# driver system CPU is always simple... note this is an assignment of
# a class, not an instance.
DriveCPUClass = AtomicSimpleCPU
drive_mem_mode = 'atomic'

# Check if KVM support has been enabled, we might need to do VM
# configuration if that's the case.
have_kvm_support = 'BaseKvmCPU' in globals()
def is_kvm_cpu(cpu_class):
    return have_kvm_support and cpu_class != None and \
        issubclass(cpu_class, BaseKvmCPU)

# system under test can be any CPU
(TestCPUClass, test_mem_mode, FutureClass) = Simulation.setCPUClass(options)

# Match the memories with the CPUs, the driver system always simple,
# and based on the options for the test system
DriveMemClass = SimpleMemory
TestMemClass = Simulation.setMemClass(options)

if options.benchmark:
    try:
        bm = Benchmarks[options.benchmark]
    except KeyError:
        print "Error benchmark %s has not been defined." % options.benchmark
        print "Valid benchmarks are: %s" % DefinedBenchmarks
        sys.exit(1)
else:
    if options.dual:
        bm = [SysConfig(disk=options.disk_image, mem=options.mem_size),
              SysConfig(disk=options.disk_image, mem=options.mem_size)]
    else:
        bm = [SysConfig(disk=options.disk_image, mem=options.mem_size)]

np = options.num_cpus

if buildEnv['TARGET_ISA'] == "alpha":
    test_sys = makeLinuxAlphaSystem(test_mem_mode, bm[0])
elif buildEnv['TARGET_ISA'] == "mips":
    test_sys = makeLinuxMipsSystem(test_mem_mode, bm[0])
elif buildEnv['TARGET_ISA'] == "sparc":
    test_sys = makeSparcSystem(test_mem_mode, bm[0])
elif buildEnv['TARGET_ISA'] == "x86":
    test_sys = makeLinuxX86System(test_mem_mode, options.num_cpus, bm[0])
elif buildEnv['TARGET_ISA'] == "arm":
    test_sys = makeArmSystem(test_mem_mode, options.machine_type, bm[0],
                             options.dtb_filename,
                             bare_metal=options.bare_metal)
    if options.enable_context_switch_stats_dump:
        test_sys.enable_context_switch_stats_dump = True
else:
    fatal("Incapable of building %s full system!", buildEnv['TARGET_ISA'])

# Create a top-level voltage domain
test_sys.voltage_domain = VoltageDomain(voltage = options.sys_voltage)

# Create a source clock for the system and set the clock period
test_sys.clk_domain = SrcClockDomain(clock =  options.sys_clock,
                                     voltage_domain = test_sys.voltage_domain)

# Create a CPU voltage domain
test_sys.cpu_voltage_domain = VoltageDomain()

# Create a source clock for the CPUs and set the clock period
test_sys.cpu_clk_domain = SrcClockDomain(clock = options.cpu_clock,
                                         voltage_domain =
                                         test_sys.cpu_voltage_domain)

if options.kernel is not None:
    test_sys.kernel = binary(options.kernel)

if options.script is not None:
    test_sys.readfile = options.script

if options.lpae:
    test_sys.have_lpae = True

if options.virtualisation:
    test_sys.have_virtualization = True

test_sys.init_param = options.init_param

# For now, assign all the CPUs to the same clock domain
test_sys.cpu = [TestCPUClass(clk_domain=test_sys.cpu_clk_domain, cpu_id=i)
                for i in xrange(np)]

if is_kvm_cpu(TestCPUClass) or is_kvm_cpu(FutureClass):
    test_sys.vm = KvmVM()

if options.caches or options.l2cache:
    # By default the IOCache runs at the system clock
    test_sys.iocache = IOCache(addr_ranges = test_sys.mem_ranges)
    test_sys.iocache.cpu_side = test_sys.iobus.master
    test_sys.iocache.mem_side = test_sys.membus.slave
else:
    test_sys.iobridge = Bridge(delay='50ns', ranges = test_sys.mem_ranges)
    test_sys.iobridge.slave = test_sys.iobus.master
    test_sys.iobridge.master = test_sys.membus.slave

# Sanity check
if options.fastmem:
    if TestCPUClass != AtomicSimpleCPU:
        fatal("Fastmem can only be used with atomic CPU!")
    if (options.caches or options.l2cache):
        fatal("You cannot use fastmem in combination with caches!")

for i in xrange(np):
    if options.fastmem:
        test_sys.cpu[i].fastmem = True
    if options.checker:
        test_sys.cpu[i].addCheckerCpu()
    test_sys.cpu[i].createThreads()

CacheConfig.config_cache(options, test_sys)
MemConfig.config_mem(options, test_sys)

if len(bm) == 2:
    if buildEnv['TARGET_ISA'] == 'alpha':
        drive_sys = makeLinuxAlphaSystem(drive_mem_mode, bm[1])
    elif buildEnv['TARGET_ISA'] == 'mips':
        drive_sys = makeLinuxMipsSystem(drive_mem_mode, bm[1])
    elif buildEnv['TARGET_ISA'] == 'sparc':
        drive_sys = makeSparcSystem(drive_mem_mode, bm[1])
    elif buildEnv['TARGET_ISA'] == 'x86':
        drive_sys = makeLinuxX86System(drive_mem_mode, np, bm[1])
    elif buildEnv['TARGET_ISA'] == 'arm':
        drive_sys = makeArmSystem(drive_mem_mode, options.machine_type, bm[1])

    # Create a top-level voltage domain
    drive_sys.voltage_domain = VoltageDomain(voltage = options.sys_voltage)

    # Create a source clock for the system and set the clock period
    drive_sys.clk_domain = SrcClockDomain(clock =  options.sys_clock)

    # Create a CPU voltage domain
    drive_sys.cpu_voltage_domain = VoltageDomain()

    # Create a source clock for the CPUs and set the clock period
    drive_sys.cpu_clk_domain = SrcClockDomain(clock = options.cpu_clock,
                                              voltage_domain =
                                              drive_sys.cpu_voltage_domain)

    drive_sys.cpu = DriveCPUClass(clk_domain=drive_sys.cpu_clk_domain,
                                  cpu_id=0)
    drive_sys.cpu.createThreads()
    drive_sys.cpu.createInterruptController()
    drive_sys.cpu.connectAllPorts(drive_sys.membus)
    if options.fastmem:
        drive_sys.cpu.fastmem = True
    if options.kernel is not None:
        drive_sys.kernel = binary(options.kernel)

    if is_kvm_cpu(DriveCPUClass):
        drive_sys.vm = KvmVM()

    drive_sys.iobridge = Bridge(delay='50ns',
                                ranges = drive_sys.mem_ranges)
    drive_sys.iobridge.slave = drive_sys.iobus.master
    drive_sys.iobridge.master = drive_sys.membus.slave

    # Create the appropriate memory controllers and connect them to the
    # memory bus
    drive_sys.mem_ctrls = [DriveMemClass(range = r)
                           for r in drive_sys.mem_ranges]
    for i in xrange(len(drive_sys.mem_ctrls)):
        drive_sys.mem_ctrls[i].port = drive_sys.membus.master

    drive_sys.init_param = options.init_param
    root = makeDualRoot(True, test_sys, drive_sys, options.etherdump)
elif len(bm) == 1:
    root = Root(full_system=True, system=test_sys)
else:
    print "Error I don't know how to create more than 2 systems."
    sys.exit(1)

if options.timesync:
    root.time_sync_enable = True

if options.frame_capture:
    VncServer.frame_capture = True

Simulation.setWorkCountOptions(test_sys, options)
Simulation.run(options, root, test_sys, FutureClass)