projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 656419f9 RC |
1 | /*\r |
| 2 | * Copyright (c) 2020, Rebecca Cran <rebecca@bsdio.com>\r | |
| 3 | * Copyright (c) 2014, Pluribus Networks, Inc.\r | |
| 4 | *\r | |
| 5 | * SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
| 6 | */\r | |
| 7 | \r | |
| 8 | #include <IndustryStandard/HighPrecisionEventTimerTable.h>\r | |
| 9 | \r | |
| 10 | #include "Platform.h"\r | |
| 11 | \r | |
| 12 | #define EFI_ACPI_HPET_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('H', 'P', 'E', 'T')\r | |
| 13 | #define EFI_ACPI_OEM_TABLE_ID SIGNATURE_64('B','V','H','P','E','T',' ',' ')\r | |
| 14 | \r | |
| 15 | //\r | |
| 16 | // Ensure proper structure formats\r | |
| 17 | //\r | |
| 18 | #pragma pack (1)\r | |
| 19 | \r | |
| 20 | //\r | |
| 21 | // ACPI HPET structure\r | |
| 22 | //\r | |
| 23 | typedef struct {\r | |
| 24 | EFI_ACPI_HIGH_PRECISION_EVENT_TIMER_TABLE_HEADER Header;\r | |
| 25 | } EFI_ACPI_HIGH_PRECISION_EVENT_TIMER_DESCRIPTION_TABLE;\r | |
| 26 | \r | |
| 27 | #pragma pack ()\r | |
| 28 | \r | |
| 29 | //\r | |
| 30 | // HPET Description Table\r | |
| 31 | //\r | |
| 32 | EFI_ACPI_HIGH_PRECISION_EVENT_TIMER_DESCRIPTION_TABLE Hpet = {\r | |
| 33 | {\r | |
| 34 | {\r | |
| 35 | EFI_ACPI_HPET_DESCRIPTION_TABLE_SIGNATURE,\r | |
| 36 | sizeof (EFI_ACPI_HIGH_PRECISION_EVENT_TIMER_DESCRIPTION_TABLE),\r | |
| 37 | EFI_ACPI_HIGH_PRECISION_EVENT_TIMER_TABLE_REVISION,\r | |
| 38 | 0x00, // Checksum will be updated at runtime\r | |
| 39 | {EFI_ACPI_OEM_ID},\r | |
| 40 | EFI_ACPI_OEM_TABLE_ID,\r | |
| 41 | EFI_ACPI_OEM_REVISION,\r | |
| 42 | EFI_ACPI_CREATOR_ID,\r | |
| 43 | EFI_ACPI_CREATOR_REVISION\r | |
| 44 | },\r | |
| 45 | \r | |
| 46 | //\r | |
| 47 | // HPET specific fields\r | |
| 48 | //\r | |
| 49 | 0x0000A400, // EventTimerBlockId\r | |
| 50 | {\r | |
| 51 | EFI_ACPI_2_0_SYSTEM_MEMORY,\r | |
| 52 | 0,\r | |
| 53 | 0,\r | |
| 54 | EFI_ACPI_RESERVED_BYTE,\r | |
| 55 | 0xFED00000,\r | |
| 56 | },\r | |
| 57 | 0 // HpetNumber\r | |
| 58 | }\r | |
| 59 | };\r | |
| 60 | \r | |
| 61 | \r | |
| 62 | VOID*\r | |
| 63 | ReferenceAcpiTable (\r | |
| 64 | VOID\r | |
| 65 | )\r | |
| 66 | {\r | |
| 67 | //\r | |
| 68 | // Reference the table being generated to prevent the optimizer from removing the\r | |
| 69 | // data structure from the exeutable\r | |
| 70 | //\r | |
| 71 | return (VOID*)&Hpet;\r | |
| 72 | }\r |