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from m5.params import *
from m5.options import *
from m5.SimObject import *
from m5.objects.Workload import KernelWorkload

class ArmMachineType(Enum):
    map = {
        'VExpress_EMM' : 2272,
        'VExpress_EMM64' : 2272,
        'DTOnly' : -1,
    }

class ArmFsWorkload(KernelWorkload):
    type = 'ArmFsWorkload'
    cxx_header = "arch/arm/fs_workload.hh"
    cxx_class = "ArmISA::FsWorkload"

    boot_loader = VectorParam.String([],
        "File that contains the boot loader code. Zero or more files may be "
        "specified. The first boot loader that matches the kernel's "
        "architecture will be used.")

    dtb_filename = Param.String("",
        "File that contains the Device Tree Blob. Don't use DTB if empty.")

    machine_type = Param.ArmMachineType('DTOnly',
        "Machine id from http://www.arm.linux.org.uk/developer/machines/")
    atags_addr = Param.Addr("Address where default atags structure should " \
                                "be written")
    early_kernel_symbols = Param.Bool(False,
        "enable early kernel symbol tables before MMU")
    enable_context_switch_stats_dump = Param.Bool(False,
        "enable stats/task info dumping at context switch boundaries")

    panic_on_panic = Param.Bool(False, "Trigger a gem5 panic if the " \
                                    "guest kernel panics")
    panic_on_oops = Param.Bool(False, "Trigger a gem5 panic if the " \
                                   "guest kernel oopses")

class ArmFsLinux(ArmFsWorkload):
    type = 'ArmFsLinux'
    cxx_header = "arch/arm/linux/fs_workload.hh"
    cxx_class = "ArmISA::FsLinux"

    load_addr_mask = 0

    @cxxMethod
    def dumpDmesg(self):
        """Dump dmesg from the simulated kernel to standard out"""
        pass

class ArmFsFreebsd(ArmFsWorkload):
    type = 'ArmFsFreebsd'
    cxx_header = "arch/arm/freebsd/fs_workload.hh"
    cxx_class = "ArmISA::FsFreebsd"