ArmSystem.py revision 9338:97b4a2be1e5b 
1# Copyright (c) 2009 ARM Limited
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24# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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35#
36# Authors: Ali Saidi
37
38from m5.params import *
39
40from System import System
41
42class ArmMachineType(Enum):
43    map = {'RealView_EB' : 827,
44           'RealView_PBX' : 1901,
45           'VExpress_ELT' : 2272,
46           'VExpress_CA9' : 2272,
47           'VExpress_EMM' : 2272}
48
49class ArmSystem(System):
50    type = 'ArmSystem'
51    cxx_header = "arch/arm/system.hh"
52    load_addr_mask = 0xffffffff
53    # 0x35 Implementor is '5' from "M5"
54    # 0x0 Variant
55    # 0xf Architecture from CPUID scheme
56    # 0xc00 Primary part number ("c" or higher implies ARM v7)
57    # 0x0 Revision
58    midr_regval = Param.UInt32(0x350fc000, "MIDR value")
59    multi_proc = Param.Bool(True, "Multiprocessor system?")
60    boot_loader = Param.String("", "File that contains the boot loader code if any")
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
64class LinuxArmSystem(ArmSystem):
65    type = 'LinuxArmSystem'
66    cxx_header = "arch/arm/linux/system.hh"
67    load_addr_mask = 0x0fffffff
68    machine_type = Param.ArmMachineType('RealView_PBX',
69        "Machine id from http://www.arm.linux.org.uk/developer/machines/")
70    atags_addr = Param.Addr(0x100,
71        "Address where default atags structure should be written")
72    dtb_filename = Param.String("",
73        "File that contains the Device Tree Blob. Don't use DTB if empty.")
74    early_kernel_symbols = Param.Bool(False,
75        "enable early kernel symbol tables before MMU")
76    enable_context_switch_stats_dump = Param.Bool(False, "enable stats/task info dumping at context switch boundaries")
77