src/arch/arm/ArmSystem.py

   1 # Copyright (c) 2009, 2012-2013 ARM Limited
   2 # All rights reserved.
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   4 # The license below extends only to copyright in the software and shall
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   8 # licensed hereunder.  You may use the software subject to the license
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  14 # modification, are permitted provided that the following conditions are
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  25 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  35 #
  36 # Authors: Ali Saidi
  37
  38 from m5.params import *
  39
  40 from System import System
  41
  42 class ArmMachineType(Enum):
  43     map = {'RealView_EB' : 827,
  44            'RealView_PBX' : 1901,
  45            'VExpress_EMM' : 2272,
  46            'VExpress_EMM64' : 2272}
  47
  48 class ArmSystem(System):
  49     type = 'ArmSystem'
  50     cxx_header = "arch/arm/system.hh"
  51     load_addr_mask = 0xffffffff
  52     multi_proc = Param.Bool(True, "Multiprocessor system?")
  53     boot_loader = Param.String("", "File that contains the boot loader code if any")
  54     gic_cpu_addr = Param.Addr(0, "Addres of the GIC CPU interface")
  55     flags_addr = Param.Addr(0, "Address of the flags register for MP booting")
  56     have_security = Param.Bool(False,
  57         "True if Security Extensions are implemented")
  58     have_virtualization = Param.Bool(False,
  59         "True if Virtualization Extensions are implemented")
  60     have_lpae = Param.Bool(False, "True if LPAE is implemented")
  61     have_generic_timer = Param.Bool(False,
  62         "True if the Generic Timer extension is implemented")
  63     highest_el_is_64 = Param.Bool(False,
  64         "True if the register width of the highest implemented exception level "
  65         "is 64 bits (ARMv8)")
  66     reset_addr_64 = Param.Addr(0x0,
  67         "Reset address if the highest implemented exception level is 64 bits "
  68         "(ARMv8)")
  69     phys_addr_range_64 = Param.UInt8(40,
  70         "Supported physical address range in bits when using AArch64 (ARMv8)")
  71     have_large_asid_64 = Param.Bool(False,
  72         "True if ASID is 16 bits in AArch64 (ARMv8)")
  73
  74 class LinuxArmSystem(ArmSystem):
  75     type = 'LinuxArmSystem'
  76     cxx_header = "arch/arm/linux/system.hh"
  77     load_addr_mask = 0x0fffffff
  78     machine_type = Param.ArmMachineType('VExpress_EMM',
  79         "Machine id from http://www.arm.linux.org.uk/developer/machines/")
  80     atags_addr = Param.Addr("Address where default atags structure should " \
  81                                 "be written")
  82     boot_release_addr = Param.Addr(0xfff8, "Address where secondary CPUs " \
  83                                        "spin waiting boot in the loader")
  84     dtb_filename = Param.String("",
  85         "File that contains the Device Tree Blob. Don't use DTB if empty.")
  86     early_kernel_symbols = Param.Bool(False,
  87         "enable early kernel symbol tables before MMU")
  88     enable_context_switch_stats_dump = Param.Bool(False, "enable stats/task info dumping at context switch boundaries")
  89
  90     panic_on_panic = Param.Bool(False, "Trigger a gem5 panic if the " \
  91                                     "guest kernel panics")
  92     panic_on_oops = Param.Bool(False, "Trigger a gem5 panic if the " \
  93                                    "guest kernel oopses")