def create_system(linux_kernel_path, disk_image_path, detailed_cpu_model):
# create the system we are going to simulate
system = MySystem(
kernel=linux_kernel_path,
disk=disk_image_path,
num_cpus=1, # run the benchmark in a single thread
no_kvm=False,
TimingCPUModel=detailed_cpu_model)
# For workitems to work correctly
# This will cause the simulator to exit simulation when the first work
# item is reached and when the first work item is finished.
system.work_begin_exit_count = 1
system.work_end_exit_count = 1
# set up the root SimObject and start the simulation
root = Root(full_system=True, system=system)
if system.getHostParallel():
# Required for running kvm on multiple host cores.
# Uses gem5's parallel event queue feature
# Note: The simulator is quite picky about this number!
root.sim_quantum = int(1e9) # 1 ms
return root, system
from system import MySystem
SimpleOpts.add_option("--script", default='',
help="Script to execute in the simulated system")
if __name__ == "__m5_main__":
(opts, args) = SimpleOpts.parse_args()
# create the system we are going to simulate
system = MySystem(opts)
# For workitems to work correctly
# This will cause the simulator to exit simulation when the first work
# item is reached and when the first work item is finished.
system.work_begin_exit_count = 1
system.work_end_exit_count = 1
# Read in the script file passed in via an option.
# This file gets read and executed by the simulated system after boot.
# Note: The disk image needs to be configured to do this.
system.readfile = opts.script
# set up the root SimObject and start the simulation
root = Root(full_system = True, system = system)
if system.getHostParallel():
# Required for running kvm on multiple host cores.
# Uses gem5's parallel event queue feature
# Note: The simulator is quite picky about this number!
root.sim_quantum = int(1e9) # 1 ms
