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325 lines
9.3 KiB
325 lines
9.3 KiB
/** @file
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MADT table parser
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Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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@par Reference(s):
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- ACPI 6.2 Specification - Errata A, September 2017
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**/
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#include <IndustryStandard/Acpi.h>
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#include <Library/UefiLib.h>
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#include "AcpiParser.h"
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#include "AcpiTableParser.h"
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// Local Variables
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STATIC CONST UINT8* MadtInterruptControllerType;
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STATIC CONST UINT8* MadtInterruptControllerLength;
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STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
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/**
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This function validates the System Vector Base in the GICD.
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@param [in] Ptr Pointer to the start of the field data.
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@param [in] Context Pointer to context specific information e.g. this
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could be a pointer to the ACPI table header.
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**/
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STATIC
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VOID
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EFIAPI
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ValidateGICDSystemVectorBase (
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IN UINT8* Ptr,
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IN VOID* Context
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);
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/**
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An ACPI_PARSER array describing the GICC Interrupt Controller Structure.
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**/
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STATIC CONST ACPI_PARSER GicCParser[] = {
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{L"Type", 1, 0, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Length", 1, 1, L"%d", NULL, NULL, NULL, NULL},
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{L"Reserved", 2, 2, L"0x%x", NULL, NULL, NULL, NULL},
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{L"CPU Interface Number", 4, 4, L"0x%x", NULL, NULL, NULL, NULL},
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{L"ACPI Processor UID", 4, 8, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Flags", 4, 12, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Parking Protocol Version", 4, 16, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Performance Interrupt GSIV", 4, 20, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Parked Address", 8, 24, L"0x%lx", NULL, NULL, NULL, NULL},
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{L"Physical Base Address", 8, 32, L"0x%lx", NULL, NULL, NULL, NULL},
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{L"GICV", 8, 40, L"0x%lx", NULL, NULL, NULL, NULL},
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{L"GICH", 8, 48, L"0x%lx", NULL, NULL, NULL, NULL},
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{L"VGIC Maintenance interrupt", 4, 56, L"0x%x", NULL, NULL, NULL, NULL},
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{L"GICR Base Address", 8, 60, L"0x%lx", NULL, NULL, NULL, NULL},
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{L"MPIDR", 8, 68, L"0x%lx", NULL, NULL, NULL, NULL},
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{L"Processor Power Efficiency Class", 1, 76, L"0x%x", NULL, NULL, NULL,
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NULL},
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{L"Reserved", 3, 77, L"%x %x %x", Dump3Chars, NULL, NULL, NULL}
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};
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/**
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An ACPI_PARSER array describing the GICD Interrupt Controller Structure.
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**/
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STATIC CONST ACPI_PARSER GicDParser[] = {
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{L"Type", 1, 0, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Length", 1, 1, L"%d", NULL, NULL, NULL, NULL},
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{L"Reserved", 2, 2, L"0x%x", NULL, NULL, NULL, NULL},
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{L"GIC ID", 4, 4, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Physical Base Address", 8, 8, L"0x%lx", NULL, NULL, NULL, NULL},
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{L"System Vector Base", 4, 16, L"0x%x", NULL, NULL,
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ValidateGICDSystemVectorBase, NULL},
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{L"GIC Version", 1, 20, L"%d", NULL, NULL, NULL, NULL},
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{L"Reserved", 3, 21, L"%x %x %x", Dump3Chars, NULL, NULL, NULL}
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};
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/**
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An ACPI_PARSER array describing the MSI Frame Interrupt Controller Structure.
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**/
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STATIC CONST ACPI_PARSER GicMSIFrameParser[] = {
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{L"Type", 1, 0, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Length", 1, 1, L"%d", NULL, NULL, NULL, NULL},
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{L"Reserved", 2, 2, L"0x%x", NULL, NULL, NULL, NULL},
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{L"MSI Frame ID", 4, 4, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Physical Base Address", 8, 8, L"0x%lx", NULL, NULL, NULL, NULL},
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{L"Flags", 4, 16, L"0x%x", NULL, NULL, NULL, NULL},
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{L"SPI Count", 2, 20, L"%d", NULL, NULL, NULL, NULL},
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{L"SPI Base", 2, 22, L"0x%x", NULL, NULL, NULL, NULL}
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};
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/**
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An ACPI_PARSER array describing the GICR Interrupt Controller Structure.
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**/
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STATIC CONST ACPI_PARSER GicRParser[] = {
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{L"Type", 1, 0, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Length", 1, 1, L"%d", NULL, NULL, NULL, NULL},
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{L"Reserved", 2, 2, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Discovery Range Base Address", 8, 4, L"0x%lx", NULL, NULL, NULL,
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NULL},
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{L"Discovery Range Length", 4, 12, L"0x%x", NULL, NULL, NULL, NULL}
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};
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/**
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An ACPI_PARSER array describing the GIC ITS Interrupt Controller Structure.
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**/
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STATIC CONST ACPI_PARSER GicITSParser[] = {
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{L"Type", 1, 0, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Length", 1, 1, L"%d", NULL, NULL, NULL, NULL},
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{L"Reserved", 2, 2, L"0x%x", NULL, NULL, NULL, NULL},
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{L"GIC ITS ID", 4, 4, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Physical Base Address", 8, 8, L"0x%lx", NULL, NULL, NULL, NULL},
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{L"Reserved", 4, 16, L"0x%x", NULL, NULL, NULL, NULL}
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};
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/**
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An ACPI_PARSER array describing the ACPI MADT Table.
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**/
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STATIC CONST ACPI_PARSER MadtParser[] = {
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PARSE_ACPI_HEADER (&AcpiHdrInfo),
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{L"Local Interrupt Controller Address", 4, 36, L"0x%x", NULL, NULL, NULL,
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NULL},
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{L"Flags", 4, 40, L"0x%x", NULL, NULL, NULL, NULL}
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};
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/**
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An ACPI_PARSER array describing the MADT Interrupt Controller Structure Header Structure.
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**/
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STATIC CONST ACPI_PARSER MadtInterruptControllerHeaderParser[] = {
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{NULL, 1, 0, NULL, NULL, (VOID**)&MadtInterruptControllerType, NULL, NULL},
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{L"Length", 1, 1, NULL, NULL, (VOID**)&MadtInterruptControllerLength, NULL,
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NULL},
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{L"Reserved", 2, 2, NULL, NULL, NULL, NULL, NULL}
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};
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/**
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This function validates the System Vector Base in the GICD.
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@param [in] Ptr Pointer to the start of the field data.
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@param [in] Context Pointer to context specific information e.g. this
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could be a pointer to the ACPI table header.
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**/
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STATIC
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VOID
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EFIAPI
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ValidateGICDSystemVectorBase (
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IN UINT8* Ptr,
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IN VOID* Context
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)
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{
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if (*(UINT32*)Ptr != 0) {
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IncrementErrorCount ();
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Print (
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L"\nERROR: System Vector Base must be zero."
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);
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}
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}
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/**
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This function parses the ACPI MADT table.
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When trace is enabled this function parses the MADT table and
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traces the ACPI table fields.
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This function currently parses the following Interrupt Controller
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Structures:
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- GICC
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- GICD
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- GIC MSI Frame
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- GICR
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- GIC ITS
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This function also performs validation of the ACPI table fields.
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@param [in] Trace If TRUE, trace the ACPI fields.
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@param [in] Ptr Pointer to the start of the buffer.
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@param [in] AcpiTableLength Length of the ACPI table.
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@param [in] AcpiTableRevision Revision of the ACPI table.
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**/
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VOID
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EFIAPI
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ParseAcpiMadt (
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IN BOOLEAN Trace,
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IN UINT8* Ptr,
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IN UINT32 AcpiTableLength,
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IN UINT8 AcpiTableRevision
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)
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{
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UINT32 Offset;
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UINT8* InterruptContollerPtr;
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UINT32 GICDCount;
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GICDCount = 0;
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if (!Trace) {
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return;
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}
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Offset = ParseAcpi (
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TRUE,
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0,
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"MADT",
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Ptr,
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AcpiTableLength,
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PARSER_PARAMS (MadtParser)
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);
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InterruptContollerPtr = Ptr + Offset;
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while (Offset < AcpiTableLength) {
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// Parse Interrupt Controller Structure to obtain Length.
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ParseAcpi (
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FALSE,
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0,
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NULL,
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InterruptContollerPtr,
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2, // Length is 1 byte at offset 1
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PARSER_PARAMS (MadtInterruptControllerHeaderParser)
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);
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if (((Offset + (*MadtInterruptControllerLength)) > AcpiTableLength) ||
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(*MadtInterruptControllerLength < 4)) {
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IncrementErrorCount ();
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Print (
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L"ERROR: Invalid Interrupt Controller Length,"
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L" Type = %d, Length = %d\n",
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*MadtInterruptControllerType,
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*MadtInterruptControllerLength
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);
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break;
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}
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switch (*MadtInterruptControllerType) {
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case EFI_ACPI_6_2_GIC: {
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ParseAcpi (
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TRUE,
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2,
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"GICC",
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InterruptContollerPtr,
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*MadtInterruptControllerLength,
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PARSER_PARAMS (GicCParser)
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);
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break;
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}
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case EFI_ACPI_6_2_GICD: {
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if (++GICDCount > 1) {
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IncrementErrorCount ();
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Print (
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L"ERROR: Only one GICD must be present,"
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L" GICDCount = %d\n",
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GICDCount
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);
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}
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ParseAcpi (
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TRUE,
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2,
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"GICD",
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InterruptContollerPtr,
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*MadtInterruptControllerLength,
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PARSER_PARAMS (GicDParser)
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);
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break;
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}
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case EFI_ACPI_6_2_GIC_MSI_FRAME: {
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ParseAcpi (
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TRUE,
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2,
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"GIC MSI Frame",
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InterruptContollerPtr,
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*MadtInterruptControllerLength,
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PARSER_PARAMS (GicMSIFrameParser)
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);
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break;
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}
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case EFI_ACPI_6_2_GICR: {
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ParseAcpi (
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TRUE,
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2,
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"GICR",
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InterruptContollerPtr,
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*MadtInterruptControllerLength,
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PARSER_PARAMS (GicRParser)
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);
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break;
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}
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case EFI_ACPI_6_2_GIC_ITS: {
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ParseAcpi (
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TRUE,
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2,
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"GIC ITS",
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InterruptContollerPtr,
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*MadtInterruptControllerLength,
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PARSER_PARAMS (GicITSParser)
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);
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break;
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}
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default: {
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IncrementErrorCount ();
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Print (
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L"ERROR: Unknown Interrupt Controller Structure,"
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L" Type = %d, Length = %d\n",
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*MadtInterruptControllerType,
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*MadtInterruptControllerLength
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);
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}
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} // switch
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InterruptContollerPtr += *MadtInterruptControllerLength;
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Offset += *MadtInterruptControllerLength;
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} // while
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}
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