src/arch/arm/ArmSystem.py

   1 # Copyright (c) 2009 ARM Limited
   2 # All rights reserved.
   3 #
   4 # The license below extends only to copyright in the software and shall
   5 # not be construed as granting a license to any other intellectual
   6 # property including but not limited to intellectual property relating
   7 # to a hardware implementation of the functionality of the software
   8 # licensed hereunder.  You may use the software subject to the license
   9 # terms below provided that you ensure that this notice is replicated
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  11 # modified or unmodified, in source code or in binary form.
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  13 # Redistribution and use in source and binary forms, with or without
  14 # modification, are permitted provided that the following conditions are
  15 # met: redistributions of source code must retain the above copyright
  16 # notice, this list of conditions and the following disclaimer;
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  20 # neither the name of the copyright holders nor the names of its
  21 # contributors may be used to endorse or promote products derived from
  22 # this software without specific prior written permission.
  23 #
  24 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  25 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  34 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  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_ELT' : 2272,
  46            'VExpress_CA9' : 2272,
  47            'VExpress_EMM' : 2272}
  48
  49 class ArmSystem(System):
  50     type = 'ArmSystem'
  51     load_addr_mask = 0xffffffff
  52     # 0x35 Implementor is '5' from "M5"
  53     # 0x0 Variant
  54     # 0xf Architecture from CPUID scheme
  55     # 0xc00 Primary part number ("c" or higher implies ARM v7)
  56     # 0x0 Revision
  57     midr_regval = Param.UInt32(0x350fc000, "MIDR value")
  58     multi_proc = Param.Bool(True, "Multiprocessor system?")
  59     boot_loader = Param.String("", "File that contains the boot loader code if any")
  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
  63 class LinuxArmSystem(ArmSystem):
  64     type = 'LinuxArmSystem'
  65     load_addr_mask = 0x0fffffff
  66     machine_type = Param.ArmMachineType('RealView_PBX',
  67         "Machine id from http://www.arm.linux.org.uk/developer/machines/")
  68     atags_addr = Param.Addr(0x100, "Address where default atags structure should be written")
  69     early_kernel_symbols = Param.Bool(False, "enable early kernel symbol tables before MMU")