projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 3399d5be OM |
1 | /** @file\r |
| 2 | * Generic Timer Description Table (GTDT)\r | |
| 3 | *\r | |
| 4 | * Copyright (c) 2012 - 2014, ARM Limited. All rights reserved.\r | |
| 5 | *\r | |
| 6 | * This program and the accompanying materials\r | |
| 7 | * are licensed and made available under the terms and conditions of the BSD License\r | |
| 8 | * which accompanies this distribution. The full text of the license may be found at\r | |
| 9 | * http://opensource.org/licenses/bsd-license.php\r | |
| 10 | *\r | |
| 11 | * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 12 | * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 13 | *\r | |
| 14 | **/\r | |
| 15 | \r | |
| 16 | #include "ArmPlatform.h"\r | |
| 17 | #include <Library/AcpiLib.h>\r | |
| 18 | #include <Library/PcdLib.h>\r | |
| 19 | #include <IndustryStandard/Acpi.h>\r | |
| 20 | \r | |
| 21 | #define GTDT_GLOBAL_FLAGS_MAPPED EFI_ACPI_5_0_GTDT_GLOBAL_FLAG_MEMORY_MAPPED_BLOCK_PRESENT\r | |
| 22 | #define GTDT_GLOBAL_FLAGS_NOT_MAPPED 0\r | |
| 23 | #define GTDT_GLOBAL_FLAGS_EDGE EFI_ACPI_5_0_GTDT_GLOBAL_FLAG_INTERRUPT_MODE\r | |
| 24 | #define GTDT_GLOBAL_FLAGS_LEVEL 0\r | |
| 25 | \r | |
| 26 | // Note: We could have a build flag that switches between memory mapped/non-memory mapped timer\r | |
| 27 | #ifdef SYSTEM_TIMER_BASE_ADDRESS\r | |
| 28 | #define GTDT_GLOBAL_FLAGS (GTDT_GLOBAL_FLAGS_MAPPED | GTDT_GLOBAL_FLAGS_LEVEL)\r | |
| 29 | #else\r | |
| 30 | #define GTDT_GLOBAL_FLAGS (GTDT_GLOBAL_FLAGS_NOT_MAPPED | GTDT_GLOBAL_FLAGS_LEVEL)\r | |
| 31 | #define SYSTEM_TIMER_BASE_ADDRESS 0\r | |
| 32 | #endif\r | |
| 33 | \r | |
| 34 | #define GTDT_TIMER_EDGE_TRIGGERED (1 << EFI_ACPI_5_0_GTDT_TIMER_FLAG_TIMER_INTERRUPT_MODE)\r | |
| 35 | #define GTDT_TIMER_LEVEL_TRIGGERED (0 << EFI_ACPI_5_0_GTDT_TIMER_FLAG_TIMER_INTERRUPT_MODE)\r | |
| 36 | #define GTDT_TIMER_ACTIVE_LOW (1 << EFI_ACPI_5_0_GTDT_TIMER_FLAG_TIMER_INTERRUPT_POLARITY)\r | |
| 37 | #define GTDT_TIMER_ACTIVE_HIGH (0 << EFI_ACPI_5_0_GTDT_TIMER_FLAG_TIMER_INTERRUPT_POLARITY)\r | |
| 38 | \r | |
| 39 | #define GTDT_GTIMER_FLAGS (GTDT_TIMER_ACTIVE_LOW | GTDT_TIMER_LEVEL_TRIGGERED)\r | |
| 40 | \r | |
| 41 | EFI_ACPI_5_0_GENERIC_TIMER_DESCRIPTION_TABLE Gtdt = {\r | |
| 42 | ARM_ACPI_HEADER(\r | |
| 43 | EFI_ACPI_5_0_GENERIC_TIMER_DESCRIPTION_TABLE_SIGNATURE,\r | |
| 44 | EFI_ACPI_5_0_GENERIC_TIMER_DESCRIPTION_TABLE,\r | |
| 45 | EFI_ACPI_5_0_GENERIC_TIMER_DESCRIPTION_TABLE_REVISION\r | |
| 46 | ),\r | |
| 47 | SYSTEM_TIMER_BASE_ADDRESS, // UINT64 PhysicalAddress\r | |
| 48 | GTDT_GLOBAL_FLAGS, // UINT32 GlobalFlags\r | |
| 49 | FixedPcdGet32 (PcdArmArchTimerSecIntrNum), // UINT32 SecurePL1TimerGSIV\r | |
| 50 | GTDT_GTIMER_FLAGS, // UINT32 SecurePL1TimerFlags\r | |
| 51 | FixedPcdGet32 (PcdArmArchTimerIntrNum), // UINT32 NonSecurePL1TimerGSIV\r | |
| 52 | GTDT_GTIMER_FLAGS, // UINT32 NonSecurePL1TimerFlags\r | |
| 53 | FixedPcdGet32 (PcdArmArchTimerVirtIntrNum), // UINT32 VirtualTimerGSIV\r | |
| 54 | GTDT_GTIMER_FLAGS, // UINT32 VirtualTimerFlags\r | |
| 55 | FixedPcdGet32 (PcdArmArchTimerHypIntrNum), // UINT32 NonSecurePL2TimerGSIV\r | |
| 56 | GTDT_GTIMER_FLAGS // UINT32 NonSecurePL2TimerFlags\r | |
| 57 | };\r | |
| 58 | \r | |
| 59 | \r | |
| 60 | VOID*\r | |
| 61 | ReferenceAcpiTable (\r | |
| 62 | VOID\r | |
| 63 | )\r | |
| 64 | {\r | |
| 65 | //\r | |
| 66 | // Reference the table being generated to prevent the optimizer from removing the\r | |
| 67 | // data structure from the exeutable\r | |
| 68 | //\r | |
| 69 | return (VOID*)&Gtdt;\r | |
| 70 | }\r |