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# system components
from gem5.components.boards.arm_board import ArmBoard
from gem5.components.processors.simple_processor import SimpleProcessor
from gem5.components.memory.single_channel import SingleChannelDDR4_2400
from gem5.components.cachehierarchies.classic.private_l1_cache_hierarchy import PrivateL1CacheHierarchy

# simulation components
from gem5.components.processors.cpu_types import CPUTypes
from gem5.resources.resource import obtain_resource
from gem5.simulate.simulator import Simulator
from gem5.isas import ISA

'''

Usage:

gem5 --outdir=FS_mode -re --debug-flags=SyscallAll FS_hello_world.py

'''

cache_hierarchy = PrivateL1CacheHierarchy(
    l1d_size="64KiB",
    l1i_size="64KiB",
)

memory = SingleChannelDDR4_2400("1GiB")

processor = SimpleProcessor(
    cpu_type = CPUTypes.TIMING,
    num_cores = 1,
    isa = ISA.ARM
)

board = ArmBoard(
    clk_freq="1GHz",
    processor=processor,
    memory=memory,
    cache_hierarchy=cache_hierarchy,
)

board.set_kernel_disk_workload(
  kernel = obtain_resource("arm64-linux-kernel-6.8.12"),
  disk_image = obtain_resource("arm-ubuntu-24.04-img"),
  bootloader = obtain_resource("arm64-bootloader-foundation")
)

simulator = Simulator(
    board=board
)

simulator.run(20_000_000_000)

print("Simulation Done")