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 - 2009, Intel Corporation. All rights reserved.<BR>
   8   This program and the accompanying materials are
   9   licensed and made available under the terms and conditions of the BSD License
  10   which accompanies this distribution.  The full text of the license may be found at
  11   http://opensource.org/licenses/bsd-license.php
  12
  13   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  14   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  15
  16 **/
  17
  18 #include <IndustryStandard/Acpi.h>
  19
  20 //
  21 // MADT Definitions
  22 //
  23 #define EFI_ACPI_OEM_MADT_REVISION 0x00000000 // TBD
  24
  25 //
  26 // Local APIC address
  27 //
  28 #define EFI_ACPI_LOCAL_APIC_ADDRESS 0xFEE00000 // TBD
  29
  30 //
  31 // Multiple APIC Flags are defined in AcpiX.0.h
  32 //
  33 #define EFI_ACPI_1_0_MULTIPLE_APIC_FLAGS (EFI_ACPI_1_0_PCAT_COMPAT)
  34
  35 //
  36 // Define the number of each table type.
  37 // This is where the table layout is modified.
  38 //
  39 #define EFI_ACPI_PROCESSOR_LOCAL_APIC_COUNT           1
  40 #define EFI_ACPI_INTERRUPT_SOURCE_OVERRIDE_COUNT      2
  41 #define EFI_ACPI_IO_APIC_COUNT                        1
  42
  43 //
  44 // Ensure proper structure formats
  45 //
  46 #pragma pack (1)
  47
  48 //
  49 // ACPI 1.0 MADT structure
  50 //
  51 typedef struct {
  52   EFI_ACPI_1_0_MULTIPLE_APIC_DESCRIPTION_TABLE_HEADER   Header;
  53
  54 #if EFI_ACPI_PROCESSOR_LOCAL_APIC_COUNT > 0
  55   EFI_ACPI_1_0_PROCESSOR_LOCAL_APIC_STRUCTURE           LocalApic[EFI_ACPI_PROCESSOR_LOCAL_APIC_COUNT];
  56 #endif
  57
  58 #if EFI_ACPI_INTERRUPT_SOURCE_OVERRIDE_COUNT > 0
  59   EFI_ACPI_1_0_INTERRUPT_SOURCE_OVERRIDE_STRUCTURE      Iso[EFI_ACPI_INTERRUPT_SOURCE_OVERRIDE_COUNT];
  60 #endif
  61
  62 #if EFI_ACPI_IO_APIC_COUNT > 0
  63   EFI_ACPI_1_0_IO_APIC_STRUCTURE                        IoApic[EFI_ACPI_IO_APIC_COUNT];
  64 #endif
  65
  66 } EFI_ACPI_1_0_MULTIPLE_APIC_DESCRIPTION_TABLE;
  67
  68 #pragma pack ()
  69
  70 //
  71 // Multiple APIC Description Table
  72 //
  73 EFI_ACPI_1_0_MULTIPLE_APIC_DESCRIPTION_TABLE Madt = {
  74   EFI_ACPI_1_0_APIC_SIGNATURE,
  75   sizeof (EFI_ACPI_1_0_MULTIPLE_APIC_DESCRIPTION_TABLE),
  76   EFI_ACPI_1_0_MULTIPLE_APIC_DESCRIPTION_TABLE_REVISION,
  77
  78   //
  79   // Checksum will be updated at runtime
  80   //
  81   0x00,
  82
  83   //
  84   // It is expected that these values will be programmed at runtime
  85   //
  86   ' ', ' ', ' ', ' ', ' ', ' ',
  87
  88   0,
  89   EFI_ACPI_OEM_MADT_REVISION,
  90   0,
  91   0,
  92
  93   //
  94   // MADT specific fields
  95   //
  96   EFI_ACPI_LOCAL_APIC_ADDRESS,
  97   EFI_ACPI_1_0_MULTIPLE_APIC_FLAGS,
  98
  99   //
 100   // Processor Local APIC Structure
 101   //
 102
 103   EFI_ACPI_1_0_PROCESSOR_LOCAL_APIC,                        // Type
 104   sizeof (EFI_ACPI_1_0_PROCESSOR_LOCAL_APIC_STRUCTURE),     // Length
 105   0x01,                                                     // Processor ID
 106   0x00,                                                     // Local APIC ID
 107   0x00000001,                                               // Flags - Enabled by default
 108
 109   //
 110   // Interrupt Source Override Structure
 111   //
 112
 113   //
 114   // IRQ0=>IRQ2 Interrupt Source Override Structure
 115   //
 116   EFI_ACPI_1_0_INTERRUPT_SOURCE_OVERRIDE,                   // Type
 117   sizeof (EFI_ACPI_1_0_INTERRUPT_SOURCE_OVERRIDE_STRUCTURE),// Length
 118   0x00,                                                     // Bus - ISA
 119   0x00,                                                     // Source - IRQ0
 120   0x00000002,                                               // Global System Interrupt - IRQ2
 121   0x0000,                                                   // Flags - Conforms to specifications of the bus
 122
 123   //
 124   // ISO (SCI Active High) Interrupt Source Override Structure
 125   //
 126   EFI_ACPI_1_0_INTERRUPT_SOURCE_OVERRIDE,                   // Type
 127   sizeof (EFI_ACPI_1_0_INTERRUPT_SOURCE_OVERRIDE_STRUCTURE),// Length
 128   0x00,                                                     // Bus - ISA
 129   0x09,                                                     // Source - IRQ0
 130   0x00000009,                                               // Global System Interrupt - IRQ2
 131   0x000D,                                                   // Flags - Level-tiggered, Active High
 132
 133   //
 134   // IO APIC Structure
 135   //
 136   EFI_ACPI_1_0_IO_APIC,                                     // Type
 137   sizeof (EFI_ACPI_1_0_IO_APIC_STRUCTURE),                  // Length
 138   0x02,                                                     // IO APIC ID
 139   EFI_ACPI_RESERVED_BYTE,                                   // Reserved
 140   0xFEC00000,                                               // IO APIC Address (physical)
 141   0x00000000                                                // Global System Interrupt Base
 142 };
 143
 144
 145 VOID*
 146 ReferenceAcpiTable (
 147   VOID
 148   )
 149 {
 150   //
 151   // Reference the table being generated to prevent the optimizer from removing the
 152   // data structure from the exeutable
 153   //
 154   return (VOID*)&Madt;
 155 }