1fd8d08970
Add a new parser for the Arm Performance Monitoring Unit Table. The APMT table describes the properties of PMU support implemented by components in an Arm-based system. Signed-off-by: Jeff Brasen <jbrasen@nvidia.com> Reviewed-by: Zhichao Gao <zhichao.gao@intel.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
107 lines
3.4 KiB
C
107 lines
3.4 KiB
C
/** @file
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APMT table parser
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Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
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Copyright (c) 2017 - 2018, ARM Limited. All rights reserved.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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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 <IndustryStandard/ArmPerformanceMonitoringUnitTable.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 ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
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STATIC CONST UINT16 *NodeLength;
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/**
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An ACPI_PARSER array describing the ACPI APMT Table.
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**/
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STATIC CONST ACPI_PARSER ApmtParser[] = {
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PARSE_ACPI_HEADER (&AcpiHdrInfo)
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};
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/**
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An ACPI_PARSER array describing the ACPI Arm PMU Node.
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**/
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STATIC CONST ACPI_PARSER ArmPmuNodeParser[] = {
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{ L"Length", 2, 0, L"0x%x", NULL, (VOID **)&NodeLength, NULL, NULL },
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{ L"Node flags", 1, 2, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"Node type", 1, 3, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"Identifier", 4, 4, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"Node Instance primary", 8, 8, L"0x%lx", NULL, NULL, NULL, NULL },
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{ L"Node Instance secondary", 4, 16, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"Base address 0", 8, 20, L"0x%lx", NULL, NULL, NULL, NULL },
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{ L"Base address 1", 8, 28, L"0x%lx", NULL, NULL, NULL, NULL },
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{ L"Overflow interrupt", 4, 36, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"Reserved1", 4, 40, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"Overflow interrupt flags", 4, 44, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"Processor affinity", 4, 48, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"Implementation ID", 4, 52, L"0x%x", NULL, NULL, NULL, NULL }
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};
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/**
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This function parses the ACPI APMT table.
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When trace is enabled this function parses the APMT table and
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traces the ACPI table fields.
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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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ParseAcpiApmt (
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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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if (!Trace) {
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return;
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}
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ParseAcpi (
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Trace,
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0,
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"APMT",
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Ptr,
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AcpiTableLength,
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PARSER_PARAMS (ApmtParser)
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);
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Offset = sizeof (EFI_ACPI_DESCRIPTION_HEADER);
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while (Offset < AcpiTableLength) {
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ParseAcpi (
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Trace,
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2,
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"Arm PMU node",
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Ptr + Offset,
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(AcpiTableLength - Offset),
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PARSER_PARAMS (ArmPmuNodeParser)
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);
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if (NodeLength == NULL) {
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Print (
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L"ERROR: Insufficient remaining table buffer length to read the " \
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L"Node structure. Length = %d.\n",
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(AcpiTableLength - Offset)
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);
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IncrementErrorCount ();
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break;
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}
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Offset += *NodeLength;
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}
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}
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