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/** @file
APMT table parser
Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
Copyright (c) 2017 - 2018, ARM Limited. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent
@par Reference(s):
- ACPI 6.2 Specification - Errata A, September 2017
**/
#include <IndustryStandard/Acpi.h>
#include <IndustryStandard/ArmPerformanceMonitoringUnitTable.h>
#include <Library/UefiLib.h>
#include "AcpiParser.h"
#include "AcpiTableParser.h"
// Local variables
STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
STATIC CONST UINT16 *NodeLength;
/**
An ACPI_PARSER array describing the ACPI APMT Table.
**/
STATIC CONST ACPI_PARSER ApmtParser[] = {
PARSE_ACPI_HEADER (&AcpiHdrInfo)
};
/**
An ACPI_PARSER array describing the ACPI Arm PMU Node.
**/
STATIC CONST ACPI_PARSER ArmPmuNodeParser[] = {
{ L"Length", 2, 0, L"0x%x", NULL, (VOID **)&NodeLength, NULL, NULL },
{ L"Node flags", 1, 2, L"0x%x", NULL, NULL, NULL, NULL },
{ L"Node type", 1, 3, L"0x%x", NULL, NULL, NULL, NULL },
{ L"Identifier", 4, 4, L"0x%x", NULL, NULL, NULL, NULL },
{ L"Node Instance primary", 8, 8, L"0x%lx", NULL, NULL, NULL, NULL },
{ L"Node Instance secondary", 4, 16, L"0x%x", NULL, NULL, NULL, NULL },
{ L"Base address 0", 8, 20, L"0x%lx", NULL, NULL, NULL, NULL },
{ L"Base address 1", 8, 28, L"0x%lx", NULL, NULL, NULL, NULL },
{ L"Overflow interrupt", 4, 36, L"0x%x", NULL, NULL, NULL, NULL },
{ L"Reserved1", 4, 40, L"0x%x", NULL, NULL, NULL, NULL },
{ L"Overflow interrupt flags", 4, 44, L"0x%x", NULL, NULL, NULL, NULL },
{ L"Processor affinity", 4, 48, L"0x%x", NULL, NULL, NULL, NULL },
{ L"Implementation ID", 4, 52, L"0x%x", NULL, NULL, NULL, NULL }
};
/**
This function parses the ACPI APMT table.
When trace is enabled this function parses the APMT table and
traces the ACPI table fields.
This function also performs validation of the ACPI table fields.
@param [in] Trace If TRUE, trace the ACPI fields.
@param [in] Ptr Pointer to the start of the buffer.
@param [in] AcpiTableLength Length of the ACPI table.
@param [in] AcpiTableRevision Revision of the ACPI table.
**/
VOID
EFIAPI
ParseAcpiApmt (
IN BOOLEAN Trace,
IN UINT8 *Ptr,
IN UINT32 AcpiTableLength,
IN UINT8 AcpiTableRevision
)
{
UINT32 Offset;
if (!Trace) {
return;
}
ParseAcpi (
Trace,
0,
"APMT",
Ptr,
AcpiTableLength,
PARSER_PARAMS (ApmtParser)
);
Offset = sizeof (EFI_ACPI_DESCRIPTION_HEADER);
while (Offset < AcpiTableLength) {
ParseAcpi (
Trace,
2,
"Arm PMU node",
Ptr + Offset,
(AcpiTableLength - Offset),
PARSER_PARAMS (ArmPmuNodeParser)
);
if (NodeLength == NULL) {
Print (
L"ERROR: Insufficient remaining table buffer length to read the " \
L"Node structure. Length = %d.\n",
(AcpiTableLength - Offset)
);
IncrementErrorCount ();
break;
}
Offset += *NodeLength;
}
}
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