def create_system(self):
sc = SysConfig(None, self.mem_size, None)
system = FSConfig.makeArmSystem(self.mem_mode,
self.machine_type, self.num_cpus,
sc, False, ruby=self.use_ruby)
# 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.panic_on_panic = True
system.panic_on_oops = True
default_kernels = {
"RealViewPBX": "vmlinux.arm.smp.fb.2.6.38.8",
"VExpress_EMM": "vmlinux.aarch32.ll_20131205.0-gem5",
"VExpress_EMM64": "vmlinux.aarch64.20140821",
}
system.kernel = SysPaths.binary(default_kernels[self.machine_type])
default_dtbs = {
"RealViewPBX": None,
"VExpress_EMM": "vexpress.aarch32.ll_20131205.0-gem5.{}cpu.dtb" \
.format(self.num_cpus),
"VExpress_EMM64": "vexpress.aarch64.20140821.dtb",
}
system.dtb_filename = SysPaths.binary(default_dtbs[self.machine_type])
self.init_system(system)
return system
def createSystem(caches, kernel, bootscript, disks=[]):
sys = devices.SimpleSystem(caches, default_mem_size,
kernel=SysPaths.binary(kernel),
readfile=bootscript,
machine_type="DTOnly")
sys.mem_ctrls = SimpleMemory(range=sys._mem_range)
sys.mem_ctrls.port = sys.membus.master
sys.connect()
# Attach disk images
if disks:
def cow_disk(image_file):
image = CowDiskImage()
image.child.image_file = SysPaths.disk(image_file)
return image
sys.disk_images = [ cow_disk(f) for f in disks ]
sys.pci_vio_block = [ PciVirtIO(vio=VirtIOBlock(image=img))
for img in sys.disk_images ]
for dev in sys.pci_vio_block:
sys.attach_pci(dev)
sys.realview.setupBootLoader(sys.membus, sys, SysPaths.binary)
return sys
def main():
parser = argparse.ArgumentParser(
description="Generic ARM big.LITTLE configuration")
parser.add_argument("--restore-from", type=str, default=None,
help="Restore from checkpoint")
parser.add_argument("--dtb", type=str, default=default_dtb,
help="DTB file to load")
parser.add_argument("--kernel", type=str, default=default_kernel,
help="Linux kernel")
parser.add_argument("--disk", action="append", type=str, default=[],
help="Disks to instantiate")
parser.add_argument("--bootscript", type=str, default=default_rcs,
help="Linux bootscript")
parser.add_argument("--atomic", action="store_true", default=False,
help="Use atomic CPUs")
parser.add_argument("--kernel-init", type=str, default="/sbin/init",
help="Override init")
parser.add_argument("--big-cpus", type=int, default=1,
help="Number of big CPUs to instantiate")
parser.add_argument("--little-cpus", type=int, default=1,
help="Number of little CPUs to instantiate")
parser.add_argument("--caches", action="store_true", default=False,
help="Instantiate caches")
parser.add_argument("--last-cache-level", type=int, default=2,
help="Last level of caches (e.g. 3 for L3)")
parser.add_argument("--big-cpu-clock", type=str, default="2GHz",
help="Big CPU clock frequency")
parser.add_argument("--little-cpu-clock", type=str, default="1GHz",
help="Little CPU clock frequency")
m5.ticks.fixGlobalFrequency()
options = parser.parse_args()
kernel_cmd = [
"earlyprintk=pl011,0x1c090000",
"console=ttyAMA0",
"lpj=19988480",
"norandmaps",
"loglevel=8",
"mem=%s" % default_mem_size,
"root=/dev/vda1",
"rw",
"init=%s" % options.kernel_init,
"vmalloc=768MB",
]
root = Root(full_system=True)
disks = [default_disk] if len(options.disk) == 0 else options.disk
system = createSystem(options.caches,
options.kernel,
options.bootscript,
disks=disks)
root.system = system
system.boot_osflags = " ".join(kernel_cmd)
AtomicCluster = devices.AtomicCluster
if options.big_cpus + options.little_cpus == 0:
m5.util.panic("Empty CPU clusters")
# big cluster
if options.big_cpus > 0:
if options.atomic:
system.bigCluster = AtomicCluster(system, options.big_cpus,
options.big_cpu_clock)
else:
system.bigCluster = BigCluster(system, options.big_cpus,
options.big_cpu_clock)
mem_mode = system.bigCluster.memoryMode()
# little cluster
if options.little_cpus > 0:
if options.atomic:
system.littleCluster = AtomicCluster(system, options.little_cpus,
options.little_cpu_clock)
else:
system.littleCluster = LittleCluster(system, options.little_cpus,
options.little_cpu_clock)
mem_mode = system.littleCluster.memoryMode()
if options.big_cpus > 0 and options.little_cpus > 0:
if system.bigCluster.memoryMode() != system.littleCluster.memoryMode():
m5.util.panic("Memory mode missmatch among CPU clusters")
system.mem_mode = mem_mode
# create caches
system.addCaches(options.caches, options.last_cache_level)
if not options.caches:
if options.big_cpus > 0 and system.bigCluster.requireCaches():
m5.util.panic("Big CPU model requires caches")
if options.little_cpus > 0 and system.littleCluster.requireCaches():
m5.util.panic("Little CPU model requires caches")
# Linux device tree
system.dtb_filename = SysPaths.binary(options.dtb)
# Get and load from the chkpt or simpoint checkpoint
if options.restore_from is not None:
m5.instantiate(options.restore_from)
else:
m5.instantiate()
# start simulation (and drop checkpoints when requested)
while True:
event = m5.simulate()
exit_msg = event.getCause()
if exit_msg == "checkpoint":
print "Dropping checkpoint at tick %d" % m5.curTick()
cpt_dir = os.path.join(m5.options.outdir, "cpt.%d" % m5.curTick())
m5.checkpoint(os.path.join(cpt_dir))
print "Checkpoint done."
else:
print exit_msg, " @ ", m5.curTick()
break
sys.exit(event.getCode())
def build(options):
m5.ticks.fixGlobalFrequency()
kernel_cmd = [
"earlyprintk=pl011,0x1c090000",
"console=ttyAMA0",
"lpj=19988480",
"norandmaps",
"loglevel=8",
"mem=%s" % default_mem_size,
"root=/dev/vda1",
"rw",
"init=%s" % options.kernel_init,
"vmalloc=768MB",
]
root = Root(full_system=True)
disks = [default_disk] if len(options.disk) == 0 else options.disk
system = createSystem(options.caches,
options.kernel,
options.bootscript,
disks=disks)
root.system = system
system.boot_osflags = " ".join(kernel_cmd)
AtomicCluster = devices.AtomicCluster
if options.big_cpus + options.little_cpus == 0:
m5.util.panic("Empty CPU clusters")
# big cluster
if options.big_cpus > 0:
if options.atomic:
system.bigCluster = AtomicCluster(system, options.big_cpus,
options.big_cpu_clock)
else:
system.bigCluster = BigCluster(system, options.big_cpus,
options.big_cpu_clock)
mem_mode = system.bigCluster.memoryMode()
# little cluster
if options.little_cpus > 0:
if options.atomic:
system.littleCluster = AtomicCluster(system, options.little_cpus,
options.little_cpu_clock)
else:
system.littleCluster = LittleCluster(system, options.little_cpus,
options.little_cpu_clock)
mem_mode = system.littleCluster.memoryMode()
if options.big_cpus > 0 and options.little_cpus > 0:
if system.bigCluster.memoryMode() != system.littleCluster.memoryMode():
m5.util.panic("Memory mode missmatch among CPU clusters")
system.mem_mode = mem_mode
# create caches
system.addCaches(options.caches, options.last_cache_level)
if not options.caches:
if options.big_cpus > 0 and system.bigCluster.requireCaches():
m5.util.panic("Big CPU model requires caches")
if options.little_cpus > 0 and system.littleCluster.requireCaches():
m5.util.panic("Little CPU model requires caches")
# Linux device tree
system.dtb_filename = SysPaths.binary(options.dtb)
return root
def create(args):
''' Create and configure the system object. '''
if args.script and not os.path.isfile(args.script):
print("Error: Bootscript %s does not exist" % args.script)
sys.exit(1)
cpu_class = cpu_types[args.cpu][0]
mem_mode = cpu_class.memory_mode()
# Only simulate caches when using a timing CPU (e.g., the HPI model)
want_caches = True if mem_mode == "timing" else False
system = devices.simpleSystem(
ArmSystem,
want_caches,
args.mem_size,
mem_mode=mem_mode,
workload=ArmFsLinux(object_file=SysPaths.binary(args.kernel)),
readfile=args.script)
MemConfig.config_mem(args, system)
# Add the PCI devices we need for this system. The base system
# doesn't have any PCI devices by default since they are assumed
# to be added by the configurastion scripts needin them.
system.pci_devices = [
# Create a VirtIO block device for the system's boot
# disk. Attach the disk image using gem5's Copy-on-Write
# functionality to avoid writing changes to the stored copy of
# the disk image.
PciVirtIO(vio=VirtIOBlock(image=create_cow_image(args.disk_image))),
]
# Attach the PCI devices to the system. The helper method in the
# system assigns a unique PCI bus ID to each of the devices and
# connects them to the IO bus.
for dev in system.pci_devices:
system.attach_pci(dev)
# Wire up the system's memory system
system.connect()
# Add CPU clusters to the system
system.cpu_cluster = [
devices.CpuCluster(system, args.num_cores, args.cpu_freq, "1.0V",
*cpu_types[args.cpu]),
]
# Create a cache hierarchy for the cluster. We are assuming that
# clusters have core-private L1 caches and an L2 that's shared
# within the cluster.
for cluster in system.cpu_cluster:
system.addCaches(want_caches, last_cache_level=2)
# Setup gem5's minimal Linux boot loader.
system.realview.setupBootLoader(system, SysPaths.binary)
if args.dtb:
system.workload.dtb_filename = args.dtb
else:
# No DTB specified: autogenerate DTB
system.workload.dtb_filename = \
os.path.join(m5.options.outdir, 'system.dtb')
system.generateDtb(system.workload.dtb_filename)
# Linux boot command flags
kernel_cmd = [
# Tell Linux to use the simulated serial port as a console
"console=ttyAMA0",
# Hard-code timi
"lpj=19988480",
# Disable address space randomisation to get a consistent
# memory layout.
"norandmaps",
# Tell Linux where to find the root disk image.
"root=/dev/vda",
# Mount the root disk read-write by default.
"rw",
# Tell Linux about the amount of physical memory present.
"mem=%s" % args.mem_size,
]
system.workload.command_line = " ".join(kernel_cmd)
return system
def create_cow_image(name):
"""Helper function to create a Copy-on-Write disk image"""
image = CowDiskImage()
image.child.image_file = SysPaths.disk(name)
return image
# 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.
#
# Authors: Lisa Hsu
import m5
from m5.objects import *
m5.util.addToPath('../configs/')
from common import Benchmarks, FSConfig, SysPaths
test_sys = FSConfig.makeLinuxAlphaSystem('atomic',
Benchmarks.SysConfig('netperf-stream-client.rcS'))
test_sys.kernel = SysPaths.binary('vmlinux')
# Dummy voltage domain for all test_sys clock domains
test_sys.voltage_domain = VoltageDomain()
# Create the system clock domain
test_sys.clk_domain = SrcClockDomain(clock = '1GHz',
voltage_domain = test_sys.voltage_domain)
test_sys.cpu = AtomicSimpleCPU(cpu_id=0)
# create the interrupt controller
test_sys.cpu.createInterruptController()
test_sys.cpu.connectAllPorts(test_sys.membus)
# Create a seperate clock domain for components that should run at
# CPUs frequency
# Set the default cache size and associativity to be very small to encourage
# races between requests and writebacks.
options.l1d_size="32kB"
options.l1i_size="32kB"
options.l2_size="4MB"
options.l1d_assoc=2
options.l1i_assoc=2
options.l2_assoc=2
options.num_cpus = 2
#the system
mdesc = SysConfig(disk = 'linux-x86.img')
system = FSConfig.makeLinuxX86System('timing', options.num_cpus,
mdesc=mdesc, Ruby=True)
system.kernel = SysPaths.binary('x86_64-vmlinux-2.6.22.9')
# Dummy voltage domain for all our clock domains
system.voltage_domain = VoltageDomain(voltage = options.sys_voltage)
system.kernel = FSConfig.binary('x86_64-vmlinux-2.6.22.9.smp')
system.clk_domain = SrcClockDomain(clock = '1GHz',
voltage_domain = system.voltage_domain)
system.cpu_clk_domain = SrcClockDomain(clock = '2GHz',
voltage_domain = system.voltage_domain)
system.cpu = [TimingSimpleCPU(cpu_id=i, clk_domain = system.cpu_clk_domain)
for i in range(options.num_cpus)]
Ruby.create_system(options, True, system, system.iobus, system._dma_ports)
# Create a seperate clock domain for Ruby
system.ruby.clk_domain = SrcClockDomain(clock = options.ruby_clock,
def create_cow_image(name):
"""Helper function to create a Copy-on-Write disk image"""
image = CowDiskImage()
image.child.image_file = SysPaths.disk(name)
return image;
def main():
parser = argparse.ArgumentParser(
description="Generic ARM big.LITTLE configuration")
parser.add_argument("--restore-from",
type=str,
default=None,
help="Restore from checkpoint")
parser.add_argument("--dtb",
type=str,
default=default_dtb,
help="DTB file to load")
parser.add_argument("--kernel",
type=str,
default=default_kernel,
help="Linux kernel")
parser.add_argument("--disk",
action="append",
type=str,
default=[],
help="Disks to instantiate")
parser.add_argument("--bootscript",
type=str,
default=default_rcs,
help="Linux bootscript")
parser.add_argument("--atomic",
action="store_true",
default=False,
help="Use atomic CPUs")
parser.add_argument("--kernel-init",
type=str,
default="/sbin/init",
help="Override init")
parser.add_argument("--big-cpus",
type=int,
default=1,
help="Number of big CPUs to instantiate")
parser.add_argument("--little-cpus",
type=int,
default=1,
help="Number of little CPUs to instantiate")
parser.add_argument("--caches",
action="store_true",
default=False,
help="Instantiate caches")
parser.add_argument("--last-cache-level",
type=int,
default=2,
help="Last level of caches (e.g. 3 for L3)")
parser.add_argument("--big-cpu-clock",
type=str,
default="2GHz",
help="Big CPU clock frequency")
parser.add_argument("--little-cpu-clock",
type=str,
default="1GHz",
help="Little CPU clock frequency")
m5.ticks.fixGlobalFrequency()
options = parser.parse_args()
kernel_cmd = [
"earlyprintk=pl011,0x1c090000",
"console=ttyAMA0",
"lpj=19988480",
"norandmaps",
"loglevel=8",
"mem=%s" % default_mem_size,
"root=/dev/vda1",
"rw",
"init=%s" % options.kernel_init,
"vmalloc=768MB",
]
root = Root(full_system=True)
disks = default_disk if len(options.disk) == 0 else options.disk
system = createSystem(options.kernel, options.bootscript, disks=disks)
root.system = system
system.boot_osflags = " ".join(kernel_cmd)
AtomicCluster = devices.AtomicCluster
if options.big_cpus + options.little_cpus == 0:
m5.util.panic("Empty CPU clusters")
# big cluster
if options.big_cpus > 0:
if options.atomic:
system.bigCluster = AtomicCluster(system, options.big_cpus,
options.big_cpu_clock)
else:
system.bigCluster = BigCluster(system, options.big_cpus,
options.big_cpu_clock)
mem_mode = system.bigCluster.memoryMode()
# little cluster
if options.little_cpus > 0:
if options.atomic:
system.littleCluster = AtomicCluster(system, options.little_cpus,
options.little_cpu_clock)
else:
system.littleCluster = LittleCluster(system, options.little_cpus,
options.little_cpu_clock)
mem_mode = system.littleCluster.memoryMode()
if options.big_cpus > 0 and options.little_cpus > 0:
if system.bigCluster.memoryMode() != system.littleCluster.memoryMode():
m5.util.panic("Memory mode missmatch among CPU clusters")
system.mem_mode = mem_mode
# create caches
system.addCaches(options.caches, options.last_cache_level)
if not options.caches:
if options.big_cpus > 0 and system.bigCluster.requireCaches():
m5.util.panic("Big CPU model requires caches")
if options.little_cpus > 0 and system.littleCluster.requireCaches():
m5.util.panic("Little CPU model requires caches")
# Linux device tree
system.dtb_filename = SysPaths.binary(options.dtb)
# Get and load from the chkpt or simpoint checkpoint
if options.restore_from is not None:
m5.instantiate(options.restore_from)
else:
m5.instantiate()
# start simulation (and drop checkpoints when requested)
while True:
event = m5.simulate()
exit_msg = event.getCause()
if exit_msg == "checkpoint":
print "Dropping checkpoint at tick %d" % m5.curTick()
cpt_dir = os.path.join(m5.options.outdir, "cpt.%d" % m5.curTick())
m5.checkpoint(os.path.join(cpt_dir))
print "Checkpoint done."
else:
print exit_msg, " @ ", m5.curTick()
break
sys.exit(event.getCode())
# races between requests and writebacks.
options.l1d_size = "32kB"
options.l1i_size = "32kB"
options.l2_size = "4MB"
options.l1d_assoc = 2
options.l1i_assoc = 2
options.l2_assoc = 2
options.num_cpus = 2
#the system
mdesc = SysConfig(disks=['linux-x86.img'])
system = FSConfig.makeLinuxX86System('timing',
options.num_cpus,
mdesc=mdesc,
Ruby=True)
system.kernel = SysPaths.binary('x86_64-vmlinux-2.6.22.9')
# Dummy voltage domain for all our clock domains
system.voltage_domain = VoltageDomain(voltage=options.sys_voltage)
system.kernel = FSConfig.binary('x86_64-vmlinux-2.6.22.9.smp')
system.clk_domain = SrcClockDomain(clock='1GHz',
voltage_domain=system.voltage_domain)
system.cpu_clk_domain = SrcClockDomain(clock='2GHz',
voltage_domain=system.voltage_domain)
system.cpu = [
TimingSimpleCPU(cpu_id=i, clk_domain=system.cpu_clk_domain)
for i in range(options.num_cpus)
]
Ruby.create_system(options, True, system, system.iobus, system._dma_ports)
def build(options):
m5.ticks.fixGlobalFrequency()
kernel_cmd = [
"earlyprintk=pl011,0x1c090000",
"console=ttyAMA0",
"lpj=19988480",
"norandmaps",
"loglevel=8",
"mem=%s" % default_mem_size,
"root=/dev/vda1",
"rw",
"init=%s" % options.kernel_init,
"vmalloc=768MB",
]
root = Root(full_system=True)
disks = [default_disk] if len(options.disk) == 0 else options.disk
system = createSystem(options.caches,
options.kernel,
options.bootscript,
disks=disks)
root.system = system
system.boot_osflags = " ".join(kernel_cmd)
if options.big_cpus + options.little_cpus == 0:
m5.util.panic("Empty CPU clusters")
big_model, little_model = cpu_types[options.cpu_type]
all_cpus = []
# big cluster
if options.big_cpus > 0:
system.bigCluster = big_model(system, options.big_cpus,
options.big_cpu_clock)
system.mem_mode = system.bigCluster.memoryMode()
all_cpus += system.bigCluster.cpus
# little cluster
if options.little_cpus > 0:
system.littleCluster = little_model(system, options.little_cpus,
options.little_cpu_clock)
system.mem_mode = system.littleCluster.memoryMode()
all_cpus += system.littleCluster.cpus
# Figure out the memory mode
if options.big_cpus > 0 and options.little_cpus > 0 and \
system.littleCluster.memoryMode() != system.littleCluster.memoryMode():
m5.util.panic("Memory mode missmatch among CPU clusters")
# create caches
system.addCaches(options.caches, options.last_cache_level)
if not options.caches:
if options.big_cpus > 0 and system.bigCluster.requireCaches():
m5.util.panic("Big CPU model requires caches")
if options.little_cpus > 0 and system.littleCluster.requireCaches():
m5.util.panic("Little CPU model requires caches")
# Create a KVM VM and do KVM-specific configuration
if issubclass(big_model, KvmCluster):
_build_kvm(system, all_cpus)
# Linux device tree
system.dtb_filename = SysPaths.binary(options.dtb)
return root
# 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.
#
# Authors: Lisa Hsu
import m5
from m5.objects import *
m5.util.addToPath('../configs/')
from common import Benchmarks, FSConfig, SysPaths
test_sys = makeLinuxAlphaSystem('atomic',
SysConfig('netperf-stream-client.rcS'))
test_sys.kernel = SysPaths.binary('vmlinux')
# Dummy voltage domain for all test_sys clock domains
test_sys.voltage_domain = VoltageDomain()
# Create the system clock domain
test_sys.clk_domain = SrcClockDomain(clock='1GHz',
voltage_domain=test_sys.voltage_domain)
test_sys.cpu = AtomicSimpleCPU(cpu_id=0)
# create the interrupt controller
test_sys.cpu.createInterruptController()
test_sys.cpu.connectAllPorts(test_sys.membus)
# Create a seperate clock domain for components that should run at
# CPUs frequency
def build(options):
m5.ticks.fixGlobalFrequency()
kernel_cmd = [
"earlyprintk",
"earlycon=pl011,0x1c090000",
"console=ttyAMA0",
"lpj=19988480",
"norandmaps",
"loglevel=8",
"mem=%s" % options.mem_size,
"root=%s" % options.root,
"rw",
"init=%s" % options.kernel_init,
"vmalloc=768MB",
]
root = Root(full_system=True)
disks = [default_disk] if len(options.disk) == 0 else options.disk
system = createSystem(options.caches,
options.kernel,
options.bootscript,
options.machine_type,
disks=disks,
mem_size=options.mem_size,
bootloader=options.bootloader)
root.system = system
if options.kernel_cmd:
system.workload.command_line = options.kernel_cmd
else:
system.workload.command_line = " ".join(kernel_cmd)
if options.big_cpus + options.little_cpus == 0:
m5.util.panic("Empty CPU clusters")
big_model, little_model = cpu_types[options.cpu_type]
all_cpus = []
# big cluster
if options.big_cpus > 0:
system.bigCluster = big_model(system, options.big_cpus,
options.big_cpu_clock)
system.mem_mode = system.bigCluster.memoryMode()
all_cpus += system.bigCluster.cpus
# little cluster
if options.little_cpus > 0:
system.littleCluster = little_model(system, options.little_cpus,
options.little_cpu_clock)
system.mem_mode = system.littleCluster.memoryMode()
all_cpus += system.littleCluster.cpus
# Figure out the memory mode
if options.big_cpus > 0 and options.little_cpus > 0 and \
system.bigCluster.memoryMode() != system.littleCluster.memoryMode():
m5.util.panic("Memory mode missmatch among CPU clusters")
# create caches
system.addCaches(options.caches, options.last_cache_level)
if not options.caches:
if options.big_cpus > 0 and system.bigCluster.requireCaches():
m5.util.panic("Big CPU model requires caches")
if options.little_cpus > 0 and system.littleCluster.requireCaches():
m5.util.panic("Little CPU model requires caches")
# Create a KVM VM and do KVM-specific configuration
if issubclass(big_model, KvmCluster):
_build_kvm(options, system, all_cpus)
# Linux device tree
if options.dtb is not None:
system.workload.dtb_filename = SysPaths.binary(options.dtb)
else:
system.workload.dtb_filename = \
os.path.join(m5.options.outdir, 'system.dtb')
system.generateDtb(system.workload.dtb_filename)
if devices.have_fastmodel and issubclass(big_model, FastmodelCluster):
from m5 import arm_fast_model as fm, systemc as sc
# setup FastModels for simulation
fm.setup_simulation("cortexa76")
# setup SystemC
root.systemc_kernel = m5.objects.SystemC_Kernel()
m5.tlm.tlm_global_quantum_instance().set(
sc.sc_time(10000.0 / 100000000.0, sc.sc_time.SC_SEC))
if options.vio_9p:
FSConfig.attach_9p(system.realview, system.iobus)
return root
def build(options):
m5.ticks.fixGlobalFrequency()
kernel_cmd = [
"earlyprintk=pl011,0x1c090000",
"console=ttyAMA0",
"lpj=19988480",
"norandmaps",
"loglevel=8",
"mem=%s" % default_mem_size,
"root=/dev/vda1",
"rw",
"init=%s" % options.kernel_init,
"vmalloc=768MB",
]
root = Root(full_system=True)
disks = [default_disk] if len(options.disk) == 0 else options.disk
system = createSystem(options.caches,
options.kernel,
options.bootscript,
disks=disks)
root.system = system
system.boot_osflags = " ".join(kernel_cmd)
if options.big_cpus + options.little_cpus == 0:
m5.util.panic("Empty CPU clusters")
big_model, little_model = cpu_types[options.cpu_type]
all_cpus = []
# big cluster
if options.big_cpus > 0:
system.bigCluster = big_model(system, options.big_cpus,
options.big_cpu_clock)
system.mem_mode = system.bigCluster.memoryMode()
all_cpus += system.bigCluster.cpus
# little cluster
if options.little_cpus > 0:
system.littleCluster = little_model(system, options.little_cpus,
options.little_cpu_clock)
system.mem_mode = system.littleCluster.memoryMode()
all_cpus += system.littleCluster.cpus
# Figure out the memory mode
if options.big_cpus > 0 and options.little_cpus > 0 and \
system.littleCluster.memoryMode() != system.littleCluster.memoryMode():
m5.util.panic("Memory mode missmatch among CPU clusters")
# create caches
system.addCaches(options.caches, options.last_cache_level)
if not options.caches:
if options.big_cpus > 0 and system.bigCluster.requireCaches():
m5.util.panic("Big CPU model requires caches")
if options.little_cpus > 0 and system.littleCluster.requireCaches():
m5.util.panic("Little CPU model requires caches")
# Create a KVM VM and do KVM-specific configuration
if issubclass(big_model, KvmCluster):
_build_kvm(system, all_cpus)
# Linux device tree
if options.dtb is not None:
system.dtb_filename = SysPaths.binary(options.dtb)
else:
system.generateDtb(m5.options.outdir, 'system.dtb')
return root
def build(options):
m5.ticks.fixGlobalFrequency()
kernel_cmd = [
"earlyprintk=pl011,0x1c090000",
"console=ttyAMA0",
"lpj=19988480",
"norandmaps",
"loglevel=8",
"mem=%s" % options.mem_size,
"root=%s" % options.root,
"rw",
"init=%s" % options.kernel_init,
"vmalloc=768MB",
]
root = Root(full_system=True)
disks = [default_disk] if len(options.disk) == 0 else options.disk
system = createSystem(options.caches,
options.kernel,
options.bootscript,
options.machine_type,
disks=disks,
mem_size=options.mem_size,
bootloader=options.bootloader)
root.system = system
if options.kernel_cmd:
system.boot_osflags = options.kernel_cmd
else:
system.boot_osflags = " ".join(kernel_cmd)
if options.big_cpus + options.little_cpus + options.mid_cpus == 0:
m5.util.panic("Empty CPU clusters")
big_model, mid_model, little_model = cpu_types[options.cpu_type]
sw_big_cpu, sw_mid_cpu, sw_little_cpu = sw_cpu_types[options.sw_cpu_type]
all_cpus = []
sw_all_cpus = []
if options.big_cpus > 0:
system.bigCluster = big_model(system, options.big_cpus,
options.big_cpu_clock)
system.mem_mode = system.bigCluster.memoryMode()
all_cpus += system.bigCluster.cpus
cpu_class_tmp = ObjectList.cpu_list.get(sw_big_cpu)
big_sw_cpus = [
cpu_class_tmp(switched_out=True, cpu_id=(i))
for i in range(options.big_cpus)
]
for i in range(options.big_cpus):
if options.fast_forward:
system.bigCluster.cpus[i].max_insts_any_thread = int(
options.fast_forward)
big_sw_cpus[i].system = system
big_sw_cpus[i].workload = system.bigCluster.cpus[i].workload
big_sw_cpus[i].clk_domain = system.bigCluster.cpus[i].clk_domain
big_sw_cpus[i].progress_interval = system.bigCluster.cpus[
i].progress_interval
big_sw_cpus[i].isa = system.bigCluster.cpus[i].isa
system.bigCluster.switch_cpus = big_sw_cpus
if options.mid_cpus > 0:
system.midCluster = mid_model(system, options.mid_cpus,
options.mid_cpu_clock)
system.mem_mode = system.midCluster.memoryMode()
all_cpus += system.midCluster.cpus
cpu_class_tmp = ObjectList.cpu_list.get(sw_mid_cpu)
mid_sw_cpus = [
cpu_class_tmp(switched_out=True, cpu_id=(i + options.big_cpus))
for i in range(options.mid_cpus)
]
for i in range(options.mid_cpus):
if options.fast_forward:
system.midCluster.cpus[i].max_insts_any_thread = int(
options.fast_forward)
mid_sw_cpus[i].system = system
mid_sw_cpus[i].workload = system.midCluster.cpus[i].workload
mid_sw_cpus[i].clk_domain = system.midCluster.cpus[i].clk_domain
mid_sw_cpus[i].progress_interval = system.midCluster.cpus[
i].progress_interval
mid_sw_cpus[i].isa = system.midCluster.cpus[i].isa
system.midCluster.switch_cpus = mid_sw_cpus
if options.little_cpus > 0:
system.littleCluster = little_model(system, options.little_cpus,
options.little_cpu_clock)
system.mem_mode = system.littleCluster.memoryMode()
all_cpus += system.littleCluster.cpus
cpu_class_tmp = ObjectList.cpu_list.get(sw_little_cpu)
little_sw_cpus = [
cpu_class_tmp(switched_out=True,
cpu_id=(i + options.big_cpus + options.mid_cpus))
for i in range(options.little_cpus)
]
for i in range(options.little_cpus):
if options.fast_forward:
system.littleCluster.cpus[i].max_insts_any_thread = int(
options.fast_forward)
little_sw_cpus[i].system = system
little_sw_cpus[i].workload = system.littleCluster.cpus[i].workload
little_sw_cpus[i].clk_domain = system.littleCluster.cpus[
i].clk_domain
little_sw_cpus[i].progress_interval = system.littleCluster.cpus[
i].progress_interval
little_sw_cpus[i].isa = system.littleCluster.cpus[i].isa
system.littleCluster.switch_cpus = little_sw_cpus
system.addCaches(options.caches)
if not options.caches:
if options.big_cpus > 0 and system.bigCluster.requireCaches():
m5.util.panic("Big CPU model requires caches")
if options.mid_cpus > 0 and system.bigCluster.requireCaches():
m5.util.panic("Mid CPU model requires caches")
if options.little_cpus > 0 and system.littleCluster.requireCaches():
m5.util.panic("Little CPU model requires caches")
if issubclass(big_model, KvmCluster):
_build_kvm(system, all_cpus)
# Linux device tree
if options.dtb is not None:
system.dtb_filename = SysPaths.binary(options.dtb)
else:
system.generateDtb(m5.options.outdir, 'system.dtb')
if options.vio_9p:
FSConfig.attach_9p(system.realview, system.iobus)
return root
def cow_disk(image_file):
image = CowDiskImage()
image.child.image_file = SysPaths.disk(image_file)
return image
def cow_disk(image_file):
image = CowDiskImage()
image.child.image_file = SysPaths.disk(image_file)
return image
def create(args):
''' Create and configure the system object. '''
if not args.dtb:
dtb_file = SysPaths.binary("armv8_gem5_v1_%icpu.%s.dtb" %
(args.num_cores, default_dist_version))
else:
dtb_file = args.dtb
if args.script and not os.path.isfile(args.script):
print "Error: Bootscript %s does not exist" % args.script
sys.exit(1)
cpu_class = cpu_types[args.cpu][0]
mem_mode = cpu_class.memory_mode()
# Only simulate caches when using a timing CPU (e.g., the HPI model)
want_caches = True if mem_mode == "timing" else False
system = devices.SimpleSystem(want_caches,
args.mem_size,
mem_mode=mem_mode,
dtb_filename=dtb_file,
kernel=SysPaths.binary(args.kernel),
readfile=args.script,
machine_type="DTOnly")
MemConfig.config_mem(args, system)
# Add the PCI devices we need for this system. The base system
# doesn't have any PCI devices by default since they are assumed
# to be added by the configurastion scripts needin them.
system.pci_devices = [
# Create a VirtIO block device for the system's boot
# disk. Attach the disk image using gem5's Copy-on-Write
# functionality to avoid writing changes to the stored copy of
# the disk image.
PciVirtIO(vio=VirtIOBlock(image=create_cow_image(args.disk_image))),
]
# Attach the PCI devices to the system. The helper method in the
# system assigns a unique PCI bus ID to each of the devices and
# connects them to the IO bus.
for dev in system.pci_devices:
system.attach_pci(dev)
# Wire up the system's memory system
system.connect()
# Add CPU clusters to the system
system.cpu_cluster = [
devices.CpuCluster(system,
args.num_cores,
args.cpu_freq, "1.0V",
*cpu_types[args.cpu]),
]
# Create a cache hierarchy for the cluster. We are assuming that
# clusters have core-private L1 caches and an L2 that's shared
# within the cluster.
for cluster in system.cpu_cluster:
system.addCaches(want_caches, last_cache_level=2)
# Setup gem5's minimal Linux boot loader.
system.realview.setupBootLoader(system.membus, system, SysPaths.binary)
# Linux boot command flags
kernel_cmd = [
# Tell Linux to use the simulated serial port as a console
"console=ttyAMA0",
# Hard-code timi
"lpj=19988480",
# Disable address space randomisation to get a consistent
# memory layout.
"norandmaps",
# Tell Linux where to find the root disk image.
"root=/dev/vda1",
# Mount the root disk read-write by default.
"rw",
# Tell Linux about the amount of physical memory present.
"mem=%s" % args.mem_size,
]
system.boot_osflags = " ".join(kernel_cmd)
return system
def create_system(self):
system = FSConfig.makeLinuxAlphaSystem(self.mem_mode)
system.kernel = SysPaths.binary('vmlinux')
self.init_system(system)
return system
