ee4dc24f57
This program is provided to allow examination of ACPI table contents from the UEFI Shell. This can help with investigations, especially at that stage where the tables are not enabling an OS to boot. The program is not exhaustive, and only encapsulates detailed knowledge of a limited number of table types. Default behaviour is to display the content of all tables installed. 'Known' table types will be parsed and displayed with descriptions and field values. Where appropriate a degree of consistency checking is done and errors may be reported in the output. Other table types will be displayed as an array of Hexadecimal bytes. To facilitate debugging, the -s and -d options can be used to generate a binary file image of a table that can be copied elsewhere for investigation using tools such as those provided by acpica.org. This is especially relevant for AML type tables like DSDT and SSDT. The inspiration for this is the existing smbiosview Debug1 Shell command. Many tables are not explicitly handled, in part because no examples are available for our testing. The program is designed to be extended to new tables with minimal effort, and contributions are invited. Change-Id: Ifa23dc80ab8ab042c56e88424847e796a8122a7c Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Signed-off-by: Evan Lloyd <evan.lloyd@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Signed-off-by: Evan Lloyd <evan.lloyd@arm.com> Reviewed-by: Jaben Carsey <jaben.carsey@intel.com> Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com> Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
314 lines
9.3 KiB
C
314 lines
9.3 KiB
C
/**
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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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// Forward declarations
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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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/** An ACPI_PARSER array describing the GICC Interrupt
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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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/** An ACPI_PARSER array describing the GICD Interrupt
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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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/** An ACPI_PARSER array describing the MSI Frame Interrupt
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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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/** An ACPI_PARSER array describing the GICR Interrupt
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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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/** An ACPI_PARSER array describing the GIC ITS Interrupt
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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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/** 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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/** An ACPI_PARSER array describing the MADT Interrupt
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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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/** 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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/** 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 = 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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" 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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" 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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" 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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