src/arch/arm/ArmSystem.py

   1 # Copyright (c) 2009, 2012-2013, 2015 ARM Limited
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   3 #
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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 = {
  44         'RealViewEB' : 827,
  45         'RealViewPBX' : 1901,
  46         'VExpress_EMM' : 2272,
  47         'VExpress_EMM64' : 2272,
  48         'DTOnly' : -1,
  49     }
  50
  51 class ArmSystem(System):
  52     type = 'ArmSystem'
  53     cxx_header = "arch/arm/system.hh"
  54     load_addr_mask = 0xffffffff
  55     multi_proc = Param.Bool(True, "Multiprocessor system?")
  56     boot_loader = VectorParam.String([],
  57         "File that contains the boot loader code. Zero or more files may be "
  58         "specified. The first boot loader that matches the kernel's "
  59         "architecture will be used.")
  60     gic_cpu_addr = Param.Addr(0, "Addres of the GIC CPU interface")
  61     flags_addr = Param.Addr(0, "Address of the flags register for MP booting")
  62     have_security = Param.Bool(False,
  63         "True if Security Extensions are implemented")
  64     have_virtualization = Param.Bool(False,
  65         "True if Virtualization Extensions are implemented")
  66     have_lpae = Param.Bool(True, "True if LPAE is implemented")
  67     highest_el_is_64 = Param.Bool(False,
  68         "True if the register width of the highest implemented exception level "
  69         "is 64 bits (ARMv8)")
  70     reset_addr_64 = Param.Addr(0x0,
  71         "Reset address if the highest implemented exception level is 64 bits "
  72         "(ARMv8)")
  73     phys_addr_range_64 = Param.UInt8(40,
  74         "Supported physical address range in bits when using AArch64 (ARMv8)")
  75     have_large_asid_64 = Param.Bool(False,
  76         "True if ASID is 16 bits in AArch64 (ARMv8)")
  77
  78 class GenericArmSystem(ArmSystem):
  79     type = 'GenericArmSystem'
  80     cxx_header = "arch/arm/system.hh"
  81     load_addr_mask = 0x0fffffff
  82     machine_type = Param.ArmMachineType('VExpress_EMM',
  83         "Machine id from http://www.arm.linux.org.uk/developer/machines/")
  84     atags_addr = Param.Addr("Address where default atags structure should " \
  85                                 "be written")
  86     dtb_filename = Param.String("",
  87         "File that contains the Device Tree Blob. Don't use DTB if empty.")
  88     early_kernel_symbols = Param.Bool(False,
  89         "enable early kernel symbol tables before MMU")
  90     enable_context_switch_stats_dump = Param.Bool(False, "enable stats/task info dumping at context switch boundaries")
  91
  92     panic_on_panic = Param.Bool(False, "Trigger a gem5 panic if the " \
  93                                     "guest kernel panics")
  94     panic_on_oops = Param.Bool(False, "Trigger a gem5 panic if the " \
  95                                    "guest kernel oopses")
  96
  97 class LinuxArmSystem(GenericArmSystem):
  98     type = 'LinuxArmSystem'
  99     cxx_header = "arch/arm/linux/system.hh"
 100
 101     @classmethod
 102     def export_method_cxx_predecls(cls, code):
 103         code('#include "arch/arm/linux/system.hh"')
 104
 105     @classmethod
 106     def export_methods(cls, code):
 107         code('''void dumpDmesg();''')
 108
 109 class FreebsdArmSystem(GenericArmSystem):
 110     type = 'FreebsdArmSystem'
 111     cxx_header = "arch/arm/freebsd/system.hh"