mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-24 16:27:42 +01:00
63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
|
/** @file
|
||
|
|
ACPI high precision event timer table definition, at www.intel.com
|
||
|
|
Specification name is IA-PC HPET (High Precision Event Timers) Specification.
|
||
|
|
|
||
|
|
Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
|
||
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
||
|
|
**/
|
||
|
|
|
||
|
|
#ifndef _HIGH_PRECISION_EVENT_TIMER_TABLE_H_
|
||
|
|
#define _HIGH_PRECISION_EVENT_TIMER_TABLE_H_
|
||
|
|
|
||
|
|
#include <IndustryStandard/Acpi.h>
|
||
|
|
|
||
|
|
//
|
||
|
|
// Ensure proper structure formats
|
||
|
|
//
|
||
|
|
#pragma pack(1)
|
||
|
|
|
||
|
|
///
|
||
|
|
/// HPET Event Timer Block ID described in IA-PC HPET Specification, 3.2.4.
|
||
|
|
///
|
||
|
|
typedef union {
|
||
|
|
struct {
|
||
|
|
UINT32 Revision : 8;
|
||
|
|
UINT32 NumberOfTimers : 5;
|
||
|
|
UINT32 CounterSize : 1;
|
||
|
|
UINT32 Reserved : 1;
|
||
|
|
UINT32 LegacyRoute : 1;
|
||
|
|
UINT32 VendorId : 16;
|
||
|
|
} Bits;
|
||
|
|
UINT32 Uint32;
|
||
|
|
} EFI_ACPI_HIGH_PRECISION_EVENT_TIMER_BLOCK_ID;
|
||
|
|
|
||
|
|
|
||
|
|
///
|
||
|
|
/// High Precision Event Timer Table header definition.
|
||
|
|
///
|
||
|
|
typedef struct {
|
||
|
|
EFI_ACPI_DESCRIPTION_HEADER Header;
|
||
|
|
UINT32 EventTimerBlockId;
|
||
|
|
EFI_ACPI_2_0_GENERIC_ADDRESS_STRUCTURE BaseAddressLower32Bit;
|
||
|
|
UINT8 HpetNumber;
|
||
|
|
UINT16 MainCounterMinimumClockTickInPeriodicMode;
|
||
|
|
UINT8 PageProtectionAndOemAttribute;
|
||
|
|
} EFI_ACPI_HIGH_PRECISION_EVENT_TIMER_TABLE_HEADER;
|
||
|
|
|
||
|
|
///
|
||
|
|
/// HPET Revision (defined in spec)
|
||
|
|
///
|
||
|
|
#define EFI_ACPI_HIGH_PRECISION_EVENT_TIMER_TABLE_REVISION 0x01
|
||
|
|
|
||
|
|
//
|
||
|
|
// Page protection setting
|
||
|
|
// Values 3 through 15 are reserved for use by the specification
|
||
|
|
//
|
||
|
|
#define EFI_ACPI_NO_PAGE_PROTECTION 0
|
||
|
|
#define EFI_ACPI_4KB_PAGE_PROTECTION 1
|
||
|
|
#define EFI_ACPI_64KB_PAGE_PROTECTION 2
|
||
|
|
|
||
|
|
#pragma pack()
|
||
|
|
|
||
|
|
#endif
|