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1 | /** @file\r |
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2 | ACPI high precision event timer table definition, defined at \r |
| 3 | ftp://download.intel.com/labs/platcomp/hpet/download/hpetspec098a.pdf.\r |
| 4 | Specification name is IA-PC HPET (High Precision Event Timers) Specification.\r |
| 5 | \r |
| 6 | Copyright (c) 2007, Intel Corporation\r |
| 7 | All rights reserved. This program and the accompanying materials \r |
| 8 | are licensed and made available under the terms and conditions of the BSD License \r |
| 9 | which accompanies this distribution. The full text of the license may be found at \r |
| 10 | http://opensource.org/licenses/bsd-license.php \r |
| 11 | \r |
| 12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r |
| 13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r |
| 14 | **/\r |
| 15 | \r |
| 16 | #ifndef _HIGH_PRECISION_EVENT_TIMER_TABLE_H_\r |
| 17 | #define _HIGH_PRECISION_EVENT_TIMER_TABLE_H_\r |
| 18 | \r |
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19 | #include <IndustryStandard/Acpi.h>\r |
| 20 | \r |
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21 | //\r |
| 22 | // Ensure proper structure formats\r |
| 23 | //\r |
| 24 | #pragma pack(1)\r |
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25 | \r |
| 26 | ///\r |
| 27 | /// High Precision Event Timer Table header definition.\r |
| 28 | ///\r |
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29 | typedef struct {\r |
| 30 | EFI_ACPI_DESCRIPTION_HEADER Header;\r |
| 31 | UINT32 EventTimerBlockId;\r |
| 32 | EFI_ACPI_2_0_GENERIC_ADDRESS_STRUCTURE BaseAddressLower32Bit;\r |
| 33 | UINT8 HpetNumber;\r |
| 34 | UINT16 MainCounterMinimumClockTickInPeriodicMode;\r |
| 35 | UINT8 PageProtectionAndOemAttribute;\r |
| 36 | } EFI_ACPI_HIGH_PRECISION_EVENT_TIMER_TABLE_HEADER;\r |
| 37 | \r |
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38 | ///\r |
| 39 | /// HPET Revision (defined in spec)\r |
| 40 | ///\r |
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41 | #define EFI_ACPI_HIGH_PRECISION_EVENT_TIMER_TABLE_REVISION 0x01\r |
| 42 | \r |
| 43 | //\r |
| 44 | // Page protection setting\r |
| 45 | // Values 3 through 15 are reserved for use by the specification\r |
| 46 | //\r |
| 47 | #define EFI_ACPI_NO_PAGE_PROTECTION 0\r |
| 48 | #define EFI_ACPI_4KB_PAGE_PROTECTION 1\r |
| 49 | #define EFI_ACPI_64KB_PAGE_PROTECTION 2\r |
| 50 | \r |
| 51 | #pragma pack()\r |
| 52 | \r |
| 53 | #endif\r |
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