diff options
Diffstat (limited to 'src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/IndustryStandard/HighPrecisionEventTimerTable.h')
| -rw-r--r-- | src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/IndustryStandard/HighPrecisionEventTimerTable.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/IndustryStandard/HighPrecisionEventTimerTable.h b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/IndustryStandard/HighPrecisionEventTimerTable.h new file mode 100644 index 0000000000..97b1c45edf --- /dev/null +++ b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/IndustryStandard/HighPrecisionEventTimerTable.h @@ -0,0 +1,52 @@ +/** @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 - 2008, Intel Corporation. All rights reserved.<BR> + This program and the accompanying materials + are licensed and made available under the terms and conditions of the BSD License + which accompanies this distribution. The full text of the license may be found at + http://opensource.org/licenses/bsd-license.php + + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +**/ + +#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) + +/// +/// 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 |