ArmSystem.py revision 11538:55014a40512c 
1# Copyright (c) 2009, 2012-2013, 2015 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 = {
44        'RealViewEB' : 827,
45        'RealViewPBX' : 1901,
46        'VExpress_EMM' : 2272,
47        'VExpress_EMM64' : 2272,
48        'DTOnly' : -1,
49    }
50
51class 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
78class 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
97class 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
109class FreebsdArmSystem(GenericArmSystem):
110    type = 'FreebsdArmSystem'
111    cxx_header = "arch/arm/freebsd/system.hh"
112