src/arch/arm/ArmSystem.py

   1 # Copyright (c) 2009, 2012-2013, 2015 ARM Limited
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  35 #
  36 # Authors: Ali Saidi
  37
  38 from m5.params import *
  39 from m5.SimObject import *
  40
  41 from System import System
  42
  43 class ArmMachineType(Enum):
  44     map = {
  45         'RealViewEB' : 827,
  46         'RealViewPBX' : 1901,
  47         'VExpress_EMM' : 2272,
  48         'VExpress_EMM64' : 2272,
  49         'DTOnly' : -1,
  50     }
  51
  52 class ArmSystem(System):
  53     type = 'ArmSystem'
  54     cxx_header = "arch/arm/system.hh"
  55     load_addr_mask = 0xffffffff
  56     multi_proc = Param.Bool(True, "Multiprocessor system?")
  57     boot_loader = VectorParam.String([],
  58         "File that contains the boot loader code. Zero or more files may be "
  59         "specified. The first boot loader that matches the kernel's "
  60         "architecture will be used.")
  61     gic_cpu_addr = Param.Addr(0, "Addres of the GIC CPU interface")
  62     flags_addr = Param.Addr(0, "Address of the flags register for MP booting")
  63     have_security = Param.Bool(False,
  64         "True if Security Extensions are implemented")
  65     have_virtualization = Param.Bool(False,
  66         "True if Virtualization Extensions are implemented")
  67     have_lpae = Param.Bool(True, "True if LPAE is implemented")
  68     highest_el_is_64 = Param.Bool(False,
  69         "True if the register width of the highest implemented exception level "
  70         "is 64 bits (ARMv8)")
  71     reset_addr_64 = Param.Addr(0x0,
  72         "Reset address if the highest implemented exception level is 64 bits "
  73         "(ARMv8)")
  74     phys_addr_range_64 = Param.UInt8(40,
  75         "Supported physical address range in bits when using AArch64 (ARMv8)")
  76     have_large_asid_64 = Param.Bool(False,
  77         "True if ASID is 16 bits in AArch64 (ARMv8)")
  78
  79 class GenericArmSystem(ArmSystem):
  80     type = 'GenericArmSystem'
  81     cxx_header = "arch/arm/system.hh"
  82     load_addr_mask = 0x0fffffff
  83     machine_type = Param.ArmMachineType('VExpress_EMM',
  84         "Machine id from http://www.arm.linux.org.uk/developer/machines/")
  85     atags_addr = Param.Addr("Address where default atags structure should " \
  86                                 "be written")
  87     dtb_filename = Param.String("",
  88         "File that contains the Device Tree Blob. Don't use DTB if empty.")
  89     early_kernel_symbols = Param.Bool(False,
  90         "enable early kernel symbol tables before MMU")
  91     enable_context_switch_stats_dump = Param.Bool(False, "enable stats/task info dumping at context switch boundaries")
  92
  93     panic_on_panic = Param.Bool(False, "Trigger a gem5 panic if the " \
  94                                     "guest kernel panics")
  95     panic_on_oops = Param.Bool(False, "Trigger a gem5 panic if the " \
  96                                    "guest kernel oopses")
  97
  98 class LinuxArmSystem(GenericArmSystem):
  99     type = 'LinuxArmSystem'
 100     cxx_header = "arch/arm/linux/system.hh"
 101
 102     @cxxMethod
 103     def dumpDmesg(self):
 104         """Dump dmesg from the simulated kernel to standard out"""
 105         pass
 106
 107 class FreebsdArmSystem(GenericArmSystem):
 108     type = 'FreebsdArmSystem'
 109     cxx_header = "arch/arm/freebsd/system.hh"