HpetParser.c File Reference

#include <Library/UefiLib.h>
#include "AcpiParser.h"

Go to the source code of this file.

Functions
VOID EFIAPI	DumpHpetPageProtectionFlag (IN CONST CHAR16 *Format OPTIONAL, IN UINT8 *Ptr, IN UINT32 Length)
VOID EFIAPI	DumpHpetFlag (IN CONST CHAR16 *Format OPTIONAL, IN UINT8 *Ptr, IN UINT32 Length)
VOID EFIAPI	DumpCounterSize (IN CONST CHAR16 *Format OPTIONAL, IN UINT8 *Ptr, IN UINT32 Length)
STATIC VOID EFIAPI	ValidateHpetRevId (IN UINT8 *Ptr, IN UINT32 Length, IN VOID *Context)
VOID EFIAPI	DumpHpetEventTimerBlockId (IN CONST CHAR16 *Format OPTIONAL, IN UINT8 *Ptr, IN UINT32 Length)
VOID EFIAPI	ParseAcpiHpet (IN BOOLEAN Trace, IN UINT8 *Ptr, IN UINT32 AcpiTableLength, IN UINT8 AcpiTableRevision)

Variables
STATIC ACPI_DESCRIPTION_HEADER_INFO	AcpiHdrInfo
STATIC CONST ACPI_PARSER	DumpHpetFlagParser []
STATIC CONST ACPI_PARSER	HpetEventTimerBlockIdFlagParser []
STATIC CONST ACPI_PARSER	HpetParser []

Detailed Description

HPET table parser

Copyright (c) 2024, Arm Limited. All rights reserved. Copyright (C) 2024 Advanced Micro Devices, Inc. All rights reserved. SPDX-License-Identifier: BSD-2-Clause-Patent

Reference(s):

• HPET spec, version 1.0a

Definition in file HpetParser.c.

Function Documentation

DumpCounterSize()

VOID EFIAPI DumpCounterSize	(	IN CONST CHAR16 *Format	OPTIONAL,
		IN UINT8 *	Ptr,
		IN UINT32	Length
	)

This function prints HPET Counter size fields. If no format string is specified the Format must be NULL.

Parameters

[in]	Format	Optional format string for tracing the data.
[in]	Ptr	Pointer to the start of the buffer.

Definition at line 105 of file HpetParser.c.

DumpHpetEventTimerBlockId()

VOID EFIAPI DumpHpetEventTimerBlockId	(	IN CONST CHAR16 *Format	OPTIONAL,
		IN UINT8 *	Ptr,
		IN UINT32	Length
	)

This function prints Hardware ID of HPET Event timer block. If no format string is specified the Format must be NULL.

Parameters

[in]	Format	Optional format string for tracing the data.
[in]	Ptr	Pointer to the start of the buffer.

Definition at line 170 of file HpetParser.c.

DumpHpetFlag()

VOID EFIAPI DumpHpetFlag	(	IN CONST CHAR16 *Format	OPTIONAL,
		IN UINT8 *	Ptr,
		IN UINT32	Length
	)

This function prints HPET Flags fields. If no format string is specified the Format must be NULL.

Parameters

[in]	Format	Optional format string for tracing the data.
[in]	Ptr	Pointer to the start of the buffer.

Definition at line 74 of file HpetParser.c.

DumpHpetPageProtectionFlag()

VOID EFIAPI DumpHpetPageProtectionFlag	(	IN CONST CHAR16 *Format	OPTIONAL,
		IN UINT8 *	Ptr,
		IN UINT32	Length
	)

This function prints HPET page protection flags. If no format string is specified the Format must be NULL.

Parameters

[in]	Format	Optional format string for tracing the data.
[in]	Ptr	Pointer to the start of the buffer.

Definition at line 26 of file HpetParser.c.

ParseAcpiHpet()

VOID EFIAPI ParseAcpiHpet	(	IN BOOLEAN	Trace,
		IN UINT8 *	Ptr,
		IN UINT32	AcpiTableLength,
		IN UINT8	AcpiTableRevision
	)

This function parses the ACPI HPET table.

Parameters

[in]	Trace	If TRUE, trace the ACPI fields.
[in]	Ptr	Pointer to the start of the buffer.
[in]	AcpiTableLength	Length of the ACPI table.
[in]	AcpiTableRevision	Revision of the ACPI table.

Definition at line 214 of file HpetParser.c.

ValidateHpetRevId()

STATIC VOID EFIAPI ValidateHpetRevId	(	IN UINT8 *	Ptr,
		IN UINT32	Length,
		IN VOID *	Context
	)

This function validates the flags.

Parameters

[in]	Ptr	Pointer to the start of the field data.
[in]	Length	Length of the field.
[in]	Context	Pointer to context specific information e.g. this could be a pointer to the ACPI table header.

Definition at line 135 of file HpetParser.c.

Variable Documentation

AcpiHdrInfo

STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo

Definition at line 15 of file HpetParser.c.

DumpHpetFlagParser

STATIC CONST ACPI_PARSER DumpHpetFlagParser[]

Initial value:

= {
  { L"Page Protection Flag", 4, 0, NULL,    DumpHpetPageProtectionFlag, NULL, NULL, NULL },
  { L"OEM Attributes",       4, 4, L"0x%x", NULL,                       NULL, NULL, NULL }
}

An ACPI_PARSER array describing the ACPI HPET flags.

Definition at line 60 of file HpetParser.c.

HpetEventTimerBlockIdFlagParser

STATIC CONST ACPI_PARSER HpetEventTimerBlockIdFlagParser[]

Initial value:

= {
  { L"Hardware Rev ID",                  8,  0,  L"0x%x", NULL,            NULL, ValidateHpetRevId, NULL },
  { L"Comparators in 1st Timer Block",   5,  8,  L"0x%x", NULL,            NULL, NULL,              NULL },
  { L"Counter max size",                 1,  13, NULL,    DumpCounterSize, NULL, NULL,              NULL },
  { L"Reserved",                         1,  14, L"%d",   NULL,            NULL, NULL,              NULL },
  { L"LegacyReplacement IRQ Routing",    1,  15, L"%d",   NULL,            NULL, NULL,              NULL },
  { L"PCI Vendor ID of 1st Timer Block", 16, 16, L"0x%x", NULL,            NULL, NULL,              NULL }
}

An ACPI_PARSER array describing the ACPI HPET Event Timer Block ID.

Definition at line 152 of file HpetParser.c.

HpetParser

STATIC CONST ACPI_PARSER HpetParser[]

Initial value:

= {
  PARSE_ACPI_HEADER (&AcpiHdrInfo),
  { L"Event Timer Block ID",       4,   36, NULL,    DumpHpetEventTimerBlockId, NULL, NULL, NULL },
  { L"Base Address",               12,  40, NULL,    DumpGas,                   NULL, NULL, NULL },
  { L"HPET Number",                1,   52, L"0x%x", NULL,                      NULL, NULL, NULL },
  { L"Minimum Clock Ticks",        2,   53, L"0x%x", NULL,                      NULL, NULL, NULL },
  { L"Page Protection and OEM Attributes",1,   55, NULL,    DumpHpetFlag,              NULL, NULL, NULL }
}

An ACPI_PARSER array describing the ACPI HPET Table.

Definition at line 195 of file HpetParser.c.