ArmSystem.py revision 10037:5cac77888310 
1# Copyright (c) 2009, 2012-2013 ARM Limited
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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           'VExpress_EMM64' : 2272}
49
50class ArmSystem(System):
51    type = 'ArmSystem'
52    cxx_header = "arch/arm/system.hh"
53    load_addr_mask = 0xffffffff
54    multi_proc = Param.Bool(True, "Multiprocessor system?")
55    boot_loader = Param.String("", "File that contains the boot loader code if any")
56    gic_cpu_addr = Param.Addr(0, "Addres of the GIC CPU interface")
57    flags_addr = Param.Addr(0, "Address of the flags register for MP booting")
58    have_security = Param.Bool(False,
59        "True if Security Extensions are implemented")
60    have_virtualization = Param.Bool(False,
61        "True if Virtualization Extensions are implemented")
62    have_lpae = Param.Bool(False, "True if LPAE is implemented")
63    have_generic_timer = Param.Bool(False,
64        "True if the Generic Timer extension is implemented")
65    highest_el_is_64 = Param.Bool(False,
66        "True if the register width of the highest implemented exception level "
67        "is 64 bits (ARMv8)")
68    reset_addr_64 = Param.UInt64(0x0,
69        "Reset address if the highest implemented exception level is 64 bits "
70        "(ARMv8)")
71    phys_addr_range_64 = Param.UInt8(40,
72        "Supported physical address range in bits when using AArch64 (ARMv8)")
73    have_large_asid_64 = Param.Bool(False,
74        "True if ASID is 16 bits in AArch64 (ARMv8)")
75
76class LinuxArmSystem(ArmSystem):
77    type = 'LinuxArmSystem'
78    cxx_header = "arch/arm/linux/system.hh"
79    load_addr_mask = 0x0fffffff
80    machine_type = Param.ArmMachineType('RealView_PBX',
81        "Machine id from http://www.arm.linux.org.uk/developer/machines/")
82    atags_addr = Param.Addr("Address where default atags structure should " \
83                                "be written")
84    boot_release_addr = Param.Addr(0xfff8, "Address where secondary CPUs " \
85                                       "spin waiting boot in the loader")
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