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- /*++
- Copyright (c) 1999 - 2014, Intel Corporation. All rights reserved
- SPDX-License-Identifier: BSD-2-Clause-Patent
- Module Name:
- Hpet.c
- Abstract:
- This file contains a structure definition for the ACPI HPET Table.
- --*/
- //
- // Statements that include other files
- //
- #ifdef ECP_FLAG
- #include <Tiano.h>
- #endif
- #include <Hpet.h>
- #include "AcpiTablePlatform.h"
- // Hpet Table
- EFI_ACPI_HIGH_PRECISION_EVENT_TIMER_TABLE_HEADER HPET = {
- {
- EFI_ACPI_3_0_HIGH_PRECISION_EVENT_TIMER_TABLE_SIGNATURE,
- sizeof (EFI_ACPI_HIGH_PRECISION_EVENT_TIMER_TABLE_HEADER),
- EFI_ACPI_HIGH_PRECISION_EVENT_TIMER_TABLE_REVISION,
- 0, // to make sum of entire table == 0
- EFI_ACPI_OEM_ID, // OEMID is a 6 bytes long field
- EFI_ACPI_OEM_TABLE_ID, // OEM table identification(8 bytes long)
- EFI_ACPI_OEM_REVISION, // OEM revision
- EFI_ACPI_CREATOR_ID, // ASL compiler vendor ID
- EFI_ACPI_CREATOR_REVISION // ASL compiler revision number
- },
- 0x0, // EventTimerBlockId
- {
- 0x00, // Address_Space_ID = System Memory
- 0x40, // Register_Bit_Width = 32 bits, mentioned about write failures when in 64bit in SCU HAS
- 0x00, // Register_Bit_offset
- 0x00, // Dword access
- HPET_BASE_ADDRESS, // Base addresse of HPET
- },
- 0x0, // Only HPET's _UID in Namespace
- MAIN_COUNTER_MIN_PERIODIC_CLOCK_TICKS,
- 0x0
- };
- VOID*
- ReferenceAcpiTable (
- VOID
- )
- {
- //
- // Reference the table being generated to prevent the optimizer from
- // removing the data structure from the executable
- //
- return (VOID*)&HPET;
- }
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