| /** @file
|
| * Generic Timer Description Table (GTDT)
|
| *
|
| * Copyright (c) 2012 - 2014, ARM Limited. All rights reserved.
|
| *
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| * This program and the accompanying materials
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| * 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
|
| *
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| * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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| * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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| *
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| **/
|
|
|
| #include "ArmPlatform.h"
|
| #include <Library/AcpiLib.h>
|
| #include <Library/PcdLib.h>
|
| #include <IndustryStandard/Acpi.h>
|
|
|
| #define GTDT_GLOBAL_FLAGS_MAPPED EFI_ACPI_5_0_GTDT_GLOBAL_FLAG_MEMORY_MAPPED_BLOCK_PRESENT
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| #define GTDT_GLOBAL_FLAGS_NOT_MAPPED 0
|
| #define GTDT_GLOBAL_FLAGS_EDGE EFI_ACPI_5_0_GTDT_GLOBAL_FLAG_INTERRUPT_MODE
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| #define GTDT_GLOBAL_FLAGS_LEVEL 0
|
|
|
| // Note: We could have a build flag that switches between memory mapped/non-memory mapped timer
|
| #ifdef SYSTEM_TIMER_BASE_ADDRESS
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| #define GTDT_GLOBAL_FLAGS (GTDT_GLOBAL_FLAGS_MAPPED | GTDT_GLOBAL_FLAGS_LEVEL)
|
| #else
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| #define GTDT_GLOBAL_FLAGS (GTDT_GLOBAL_FLAGS_NOT_MAPPED | GTDT_GLOBAL_FLAGS_LEVEL)
|
| #define SYSTEM_TIMER_BASE_ADDRESS 0xFFFFFFFFFFFFFFFF |
| #endif
|
|
|
| #define GTDT_TIMER_EDGE_TRIGGERED EFI_ACPI_5_0_GTDT_TIMER_FLAG_TIMER_INTERRUPT_MODE |
| #define GTDT_TIMER_LEVEL_TRIGGERED 0 |
| #define GTDT_TIMER_ACTIVE_LOW EFI_ACPI_5_0_GTDT_TIMER_FLAG_TIMER_INTERRUPT_POLARITY |
| #define GTDT_TIMER_ACTIVE_HIGH 0 |
|
|
| #define GTDT_GTIMER_FLAGS (GTDT_TIMER_ACTIVE_LOW | GTDT_TIMER_LEVEL_TRIGGERED)
|
|
|
| #ifdef ARM_JUNO_ACPI_5_0
|
| EFI_ACPI_5_0_GENERIC_TIMER_DESCRIPTION_TABLE Gtdt = {
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| ARM_ACPI_HEADER(
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| EFI_ACPI_5_0_GENERIC_TIMER_DESCRIPTION_TABLE_SIGNATURE,
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| EFI_ACPI_5_0_GENERIC_TIMER_DESCRIPTION_TABLE,
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| EFI_ACPI_5_0_GENERIC_TIMER_DESCRIPTION_TABLE_REVISION
|
| ),
|
| SYSTEM_TIMER_BASE_ADDRESS, // UINT64 PhysicalAddress
|
| GTDT_GLOBAL_FLAGS, // UINT32 GlobalFlags
|
| FixedPcdGet32 (PcdArmArchTimerSecIntrNum), // UINT32 SecurePL1TimerGSIV
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| GTDT_GTIMER_FLAGS, // UINT32 SecurePL1TimerFlags
|
| FixedPcdGet32 (PcdArmArchTimerIntrNum), // UINT32 NonSecurePL1TimerGSIV
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| GTDT_GTIMER_FLAGS, // UINT32 NonSecurePL1TimerFlags
|
| FixedPcdGet32 (PcdArmArchTimerVirtIntrNum), // UINT32 VirtualTimerGSIV
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| GTDT_GTIMER_FLAGS, // UINT32 VirtualTimerFlags
|
| FixedPcdGet32 (PcdArmArchTimerHypIntrNum), // UINT32 NonSecurePL2TimerGSIV
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| GTDT_GTIMER_FLAGS // UINT32 NonSecurePL2TimerFlags
|
| };
|
| #else
|
| #pragma pack (1)
|
|
|
| typedef struct {
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| EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLE Gtdt;
|
| EFI_ACPI_5_1_GTDT_SBSA_GENERIC_WATCHDOG_STRUCTURE Watchdogs[JUNO_WATCHDOG_COUNT];
|
| } EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLES;
|
|
|
| #pragma pack ()
|
|
|
| EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLES Gtdt = {
|
| {
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| ARM_ACPI_HEADER(
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| EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLE_SIGNATURE,
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| EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLE,
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| EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLE_REVISION
|
| ),
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| SYSTEM_TIMER_BASE_ADDRESS, // UINT64 PhysicalAddress
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| 0, // UINT32 Reserved
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| FixedPcdGet32 (PcdArmArchTimerSecIntrNum), // UINT32 SecurePL1TimerGSIV
|
| GTDT_GTIMER_FLAGS, // UINT32 SecurePL1TimerFlags
|
| FixedPcdGet32 (PcdArmArchTimerIntrNum), // UINT32 NonSecurePL1TimerGSIV
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| GTDT_GTIMER_FLAGS, // UINT32 NonSecurePL1TimerFlags
|
| FixedPcdGet32 (PcdArmArchTimerVirtIntrNum), // UINT32 VirtualTimerGSIV
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| GTDT_GTIMER_FLAGS, // UINT32 VirtualTimerFlags
|
| FixedPcdGet32 (PcdArmArchTimerHypIntrNum), // UINT32 NonSecurePL2TimerGSIV
|
| GTDT_GTIMER_FLAGS, // UINT32 NonSecurePL2TimerFlags
|
| 0xFFFFFFFFFFFFFFFF, // UINT64 CntReadBasePhysicalAddress
|
| JUNO_WATCHDOG_COUNT, // UINT32 PlatformTimerCount
|
| sizeof (EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLE) // UINT32 PlatfromTimerOffset
|
| },
|
| {
|
| EFI_ACPI_5_1_SBSA_GENERIC_WATCHDOG_STRUCTURE_INIT(
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| FixedPcdGet32 (PcdGenericWatchdogRefreshBase), FixedPcdGet32 (PcdGenericWatchdogControlBase), 93, 0),
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| EFI_ACPI_5_1_SBSA_GENERIC_WATCHDOG_STRUCTURE_INIT(
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| FixedPcdGet32 (PcdGenericWatchdogRefreshBase), FixedPcdGet32 (PcdGenericWatchdogControlBase), 94, EFI_ACPI_5_1_GTDT_SBSA_GENERIC_WATCHDOG_FLAG_SECURE_TIMER)
|
| }
|
| };
|
| #endif
|
|
|
| VOID*
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| ReferenceAcpiTable (
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| VOID
|
| )
|
| {
|
| //
|
| // Reference the table being generated to prevent the optimizer from removing the
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| // data structure from the exeutable
|
| //
|
| return (VOID*)&Gtdt;
|
| }
|
