| 1 | /** @file
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| 2 | MADT Table
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| 3 |
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| 4 | This file contains a structure definition for the ACPI 1.0 Multiple APIC
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| 5 | Description Table (MADT).
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| 6 |
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| 7 | Copyright (c) 2020, Rebecca Cran <rebecca@bsdio.com>
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| 8 | Copyright (c) 2014, Pluribus Networks, Inc.
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| 9 | Copyright (c) 2008 - 2012, Intel Corporation. All rights reserved.<BR>
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| 10 |
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| 11 | SPDX-License-Identifier: BSD-2-Clause-Patent
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| 12 |
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| 13 | **/
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| 14 |
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| 15 | #include <IndustryStandard/Acpi.h>
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| 16 | #include <Platform.h>
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| 17 |
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| 18 | #define EFI_ACPI_OEM_TABLE_ID SIGNATURE_64('B','V','M','A','D','T',' ',' ')
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| 19 |
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| 20 | //
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| 21 | // Local APIC address
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| 22 | //
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| 23 | #define EFI_ACPI_LOCAL_APIC_ADDRESS 0xFEE00000
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| 24 |
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| 25 | //
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| 26 | // Multiple APIC Flags are defined in AcpiX.0.h
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| 27 | //
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| 28 | #define EFI_ACPI_1_0_MULTIPLE_APIC_FLAGS (EFI_ACPI_1_0_PCAT_COMPAT)
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| 29 |
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| 30 | //
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| 31 | // Define the number of each table type.
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| 32 | // This is where the table layout is modified.
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| 33 | //
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| 34 | #define EFI_ACPI_PROCESSOR_LOCAL_APIC_COUNT 1
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| 35 | #define EFI_ACPI_INTERRUPT_SOURCE_OVERRIDE_COUNT 1
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| 36 | #define EFI_ACPI_IO_APIC_COUNT 1
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| 37 |
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| 38 | //
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| 39 | // Ensure proper structure formats
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| 40 | //
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| 41 | #pragma pack (1)
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| 42 |
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| 43 | //
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| 44 | // ACPI 1.0 MADT structure
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| 45 | //
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| 46 | typedef struct {
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| 47 | EFI_ACPI_1_0_MULTIPLE_APIC_DESCRIPTION_TABLE_HEADER Header;
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| 48 |
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| 49 | #if EFI_ACPI_PROCESSOR_LOCAL_APIC_COUNT > 0
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| 50 | EFI_ACPI_1_0_PROCESSOR_LOCAL_APIC_STRUCTURE LocalApic[EFI_ACPI_PROCESSOR_LOCAL_APIC_COUNT];
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| 51 | #endif
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| 52 |
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| 53 | #if EFI_ACPI_INTERRUPT_SOURCE_OVERRIDE_COUNT > 0
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| 54 | EFI_ACPI_1_0_INTERRUPT_SOURCE_OVERRIDE_STRUCTURE Iso[EFI_ACPI_INTERRUPT_SOURCE_OVERRIDE_COUNT];
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| 55 | #endif
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| 56 |
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| 57 | #if EFI_ACPI_IO_APIC_COUNT > 0
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| 58 | EFI_ACPI_1_0_IO_APIC_STRUCTURE IoApic[EFI_ACPI_IO_APIC_COUNT];
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| 59 | #endif
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| 60 |
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| 61 | } EFI_ACPI_1_0_MULTIPLE_APIC_DESCRIPTION_TABLE;
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| 62 |
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| 63 | #pragma pack ()
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| 64 |
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| 65 | //
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| 66 | // Multiple APIC Description Table
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| 67 | //
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| 68 | EFI_ACPI_1_0_MULTIPLE_APIC_DESCRIPTION_TABLE Madt = {
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| 69 | {
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| 70 | {
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| 71 | EFI_ACPI_1_0_APIC_SIGNATURE,
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| 72 | sizeof (EFI_ACPI_1_0_MULTIPLE_APIC_DESCRIPTION_TABLE),
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| 73 | EFI_ACPI_1_0_MULTIPLE_APIC_DESCRIPTION_TABLE_REVISION,
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| 74 | 0x00, // Checksum will be updated at runtime
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| 75 | {EFI_ACPI_OEM_ID},
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| 76 | EFI_ACPI_OEM_TABLE_ID,
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| 77 | EFI_ACPI_OEM_REVISION,
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| 78 | EFI_ACPI_CREATOR_ID,
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| 79 | EFI_ACPI_CREATOR_REVISION
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| 80 | },
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| 81 |
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| 82 | //
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| 83 | // MADT specific fields
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| 84 | //
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| 85 | EFI_ACPI_LOCAL_APIC_ADDRESS,
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| 86 | EFI_ACPI_1_0_MULTIPLE_APIC_FLAGS,
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| 87 | },
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| 88 |
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| 89 | //
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| 90 | // Processor Local APIC Structure
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| 91 | //
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| 92 | {
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| 93 | {
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| 94 | EFI_ACPI_1_0_PROCESSOR_LOCAL_APIC, // Type
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| 95 | sizeof (EFI_ACPI_1_0_PROCESSOR_LOCAL_APIC_STRUCTURE), // Length
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| 96 | 0x00, // Processor ID
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| 97 | 0x00, // Local APIC ID
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| 98 | 0x00000001 // Flags - Enabled by default
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| 99 | }
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| 100 | },
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| 101 |
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| 102 | //
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| 103 | // Interrupt Source Override Structure
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| 104 | //
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| 105 | {
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| 106 | {
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| 107 | //
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| 108 | // IRQ0=>IRQ2 Interrupt Source Override Structure
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| 109 | //
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| 110 | EFI_ACPI_1_0_INTERRUPT_SOURCE_OVERRIDE, // Type
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| 111 | sizeof (EFI_ACPI_1_0_INTERRUPT_SOURCE_OVERRIDE_STRUCTURE),// Length
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| 112 | 0x00, // Bus - ISA
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| 113 | 0x00, // Source - IRQ0
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| 114 | 0x00000002, // Global System Interrupt - IRQ2
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| 115 | 0x0005 // Flags - Conforms to specifications of the bus
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| 116 | },
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| 117 | },
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| 118 |
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| 119 | //
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| 120 | // IO APIC Structure
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| 121 | //
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| 122 | {
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| 123 | {
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| 124 | EFI_ACPI_1_0_IO_APIC, // Type
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| 125 | sizeof (EFI_ACPI_1_0_IO_APIC_STRUCTURE), // Length
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| 126 | 0x01, // IO APIC ID
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| 127 | EFI_ACPI_RESERVED_BYTE, // Reserved
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| 128 | 0xFEC00000, // IO APIC Address (physical)
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| 129 | 0x00000000 // Global System Interrupt Base
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| 130 | }
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| 131 | },
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| 132 | };
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| 133 |
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| 134 |
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| 135 | VOID*
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| 136 | ReferenceAcpiTable (
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| 137 | VOID
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| 138 | )
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| 139 | {
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| 140 | //
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| 141 | // Reference the table being generated to prevent the optimizer from removing the
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| 142 | // data structure from the exeutable
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| 143 | //
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| 144 | return (VOID*)&Madt;
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| 145 | }
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