src/arch/arm/ArmSystem.py

   1 # Copyright (c) 2009, 2012-2013, 2015 ARM Limited
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   8 # licensed hereunder.  You may use the software subject to the license
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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 = VectorParam.String([],
  54         "File that contains the boot loader code. Zero or more files may be "
  55         "specified. The first boot loader that matches the kernel's "
  56         "architecture will be used.")
  57     gic_cpu_addr = Param.Addr(0, "Addres of the GIC CPU interface")
  58     flags_addr = Param.Addr(0, "Address of the flags register for MP booting")
  59     have_security = Param.Bool(False,
  60         "True if Security Extensions are implemented")
  61     have_virtualization = Param.Bool(False,
  62         "True if Virtualization Extensions are implemented")
  63     have_lpae = Param.Bool(False, "True if LPAE is implemented")
  64     highest_el_is_64 = Param.Bool(False,
  65         "True if the register width of the highest implemented exception level "
  66         "is 64 bits (ARMv8)")
  67     reset_addr_64 = Param.Addr(0x0,
  68         "Reset address if the highest implemented exception level is 64 bits "
  69         "(ARMv8)")
  70     phys_addr_range_64 = Param.UInt8(40,
  71         "Supported physical address range in bits when using AArch64 (ARMv8)")
  72     have_large_asid_64 = Param.Bool(False,
  73         "True if ASID is 16 bits in AArch64 (ARMv8)")
  74
  75 class GenericArmSystem(ArmSystem):
  76     type = 'GenericArmSystem'
  77     cxx_header = "arch/arm/system.hh"
  78     load_addr_mask = 0x0fffffff
  79     machine_type = Param.ArmMachineType('VExpress_EMM',
  80         "Machine id from http://www.arm.linux.org.uk/developer/machines/")
  81     atags_addr = Param.Addr("Address where default atags structure should " \
  82                                 "be written")
  83     dtb_filename = Param.String("",
  84         "File that contains the Device Tree Blob. Don't use DTB if empty.")
  85     early_kernel_symbols = Param.Bool(False,
  86         "enable early kernel symbol tables before MMU")
  87     enable_context_switch_stats_dump = Param.Bool(False, "enable stats/task info dumping at context switch boundaries")
  88
  89     panic_on_panic = Param.Bool(False, "Trigger a gem5 panic if the " \
  90                                     "guest kernel panics")
  91     panic_on_oops = Param.Bool(False, "Trigger a gem5 panic if the " \
  92                                    "guest kernel oopses")
  93
  94 class LinuxArmSystem(GenericArmSystem):
  95     type = 'LinuxArmSystem'
  96     cxx_header = "arch/arm/linux/system.hh"
  97
  98 class FreebsdArmSystem(GenericArmSystem):
  99     type = 'FreebsdArmSystem'
 100     cxx_header = "arch/arm/freebsd/system.hh"