OvmfPkg/AcpiTables/Madt.aslc

   1 /** @file
   2   MADT Table
   3
   4   This file contains a structure definition for the ACPI 1.0 Multiple APIC
   5   Description Table (MADT).
   6
   7   Copyright (c) 2008 - 2012, Intel Corporation. All rights reserved.<BR>
   8   SPDX-License-Identifier: BSD-2-Clause-Patent
   9
  10 **/
  11
  12 #include <IndustryStandard/Acpi.h>
  13 #include <Platform.h>
  14
  15 //
  16 // Local APIC address
  17 //
  18 #define EFI_ACPI_LOCAL_APIC_ADDRESS 0xFEE00000 // TBD
  19
  20 //
  21 // Multiple APIC Flags are defined in AcpiX.0.h
  22 //
  23 #define EFI_ACPI_1_0_MULTIPLE_APIC_FLAGS (EFI_ACPI_1_0_PCAT_COMPAT)
  24
  25 //
  26 // Define the number of each table type.
  27 // This is where the table layout is modified.
  28 //
  29 #define EFI_ACPI_PROCESSOR_LOCAL_APIC_COUNT           1
  30 #define EFI_ACPI_INTERRUPT_SOURCE_OVERRIDE_COUNT      2
  31 #define EFI_ACPI_IO_APIC_COUNT                        1
  32
  33 //
  34 // Ensure proper structure formats
  35 //
  36 #pragma pack (1)
  37
  38 //
  39 // ACPI 1.0 MADT structure
  40 //
  41 typedef struct {
  42   EFI_ACPI_1_0_MULTIPLE_APIC_DESCRIPTION_TABLE_HEADER   Header;
  43
  44 #if EFI_ACPI_PROCESSOR_LOCAL_APIC_COUNT > 0
  45   EFI_ACPI_1_0_PROCESSOR_LOCAL_APIC_STRUCTURE           LocalApic[EFI_ACPI_PROCESSOR_LOCAL_APIC_COUNT];
  46 #endif
  47
  48 #if EFI_ACPI_INTERRUPT_SOURCE_OVERRIDE_COUNT > 0
  49   EFI_ACPI_1_0_INTERRUPT_SOURCE_OVERRIDE_STRUCTURE      Iso[EFI_ACPI_INTERRUPT_SOURCE_OVERRIDE_COUNT];
  50 #endif
  51
  52 #if EFI_ACPI_IO_APIC_COUNT > 0
  53   EFI_ACPI_1_0_IO_APIC_STRUCTURE                        IoApic[EFI_ACPI_IO_APIC_COUNT];
  54 #endif
  55
  56 } EFI_ACPI_1_0_MULTIPLE_APIC_DESCRIPTION_TABLE;
  57
  58 #pragma pack ()
  59
  60 //
  61 // Multiple APIC Description Table
  62 //
  63 EFI_ACPI_1_0_MULTIPLE_APIC_DESCRIPTION_TABLE Madt = {
  64   {
  65     {
  66       EFI_ACPI_1_0_APIC_SIGNATURE,
  67       sizeof (EFI_ACPI_1_0_MULTIPLE_APIC_DESCRIPTION_TABLE),
  68       EFI_ACPI_1_0_MULTIPLE_APIC_DESCRIPTION_TABLE_REVISION,
  69       0x00,                                                     // Checksum will be updated at runtime
  70       {EFI_ACPI_OEM_ID},
  71       EFI_ACPI_OEM_TABLE_ID,
  72       EFI_ACPI_OEM_REVISION,
  73       EFI_ACPI_CREATOR_ID,
  74       EFI_ACPI_CREATOR_REVISION
  75     },
  76
  77     //
  78     // MADT specific fields
  79     //
  80     EFI_ACPI_LOCAL_APIC_ADDRESS,
  81     EFI_ACPI_1_0_MULTIPLE_APIC_FLAGS,
  82   },
  83
  84   //
  85   // Processor Local APIC Structure
  86   //
  87   {
  88     {
  89       EFI_ACPI_1_0_PROCESSOR_LOCAL_APIC,                        // Type
  90       sizeof (EFI_ACPI_1_0_PROCESSOR_LOCAL_APIC_STRUCTURE),     // Length
  91       0x00,                                                     // Processor ID
  92       0x00,                                                     // Local APIC ID
  93       0x00000001                                                // Flags - Enabled by default
  94     }
  95   },
  96
  97   //
  98   // Interrupt Source Override Structure
  99   //
 100
 101   {
 102     {
 103       //
 104       // IRQ0=>IRQ2 Interrupt Source Override Structure
 105       //
 106       EFI_ACPI_1_0_INTERRUPT_SOURCE_OVERRIDE,                   // Type
 107       sizeof (EFI_ACPI_1_0_INTERRUPT_SOURCE_OVERRIDE_STRUCTURE),// Length
 108       0x00,                                                     // Bus - ISA
 109       0x00,                                                     // Source - IRQ0
 110       0x00000002,                                               // Global System Interrupt - IRQ2
 111       0x0000                                                    // Flags - Conforms to specifications of the bus
 112     },
 113
 114     {
 115       //
 116       // ISO (SCI Active High) Interrupt Source Override Structure
 117       //
 118       EFI_ACPI_1_0_INTERRUPT_SOURCE_OVERRIDE,                   // Type
 119       sizeof (EFI_ACPI_1_0_INTERRUPT_SOURCE_OVERRIDE_STRUCTURE),// Length
 120       0x00,                                                     // Bus - ISA
 121       0x09,                                                     // Source - IRQ0
 122       0x00000009,                                               // Global System Interrupt - IRQ2
 123       0x000D                                                    // Flags - Level-tiggered, Active High
 124     }
 125   },
 126
 127   //
 128   // IO APIC Structure
 129   //
 130   {
 131     {
 132       EFI_ACPI_1_0_IO_APIC,                                     // Type
 133       sizeof (EFI_ACPI_1_0_IO_APIC_STRUCTURE),                  // Length
 134       0x02,                                                     // IO APIC ID
 135       EFI_ACPI_RESERVED_BYTE,                                   // Reserved
 136       0xFEC00000,                                               // IO APIC Address (physical)
 137       0x00000000                                                // Global System Interrupt Base
 138     }
 139   },
 140 };
 141
 142
 143 VOID*
 144 ReferenceAcpiTable (
 145   VOID
 146   )
 147 {
 148   //
 149   // Reference the table being generated to prevent the optimizer from removing the
 150   // data structure from the executable
 151   //
 152   return (VOID*)&Madt;
 153 }