mirror of https://github.com/acidanthera/audk.git
110 lines
5.0 KiB
Plaintext
110 lines
5.0 KiB
Plaintext
/** @file
|
|
* Generic Timer Description Table (GTDT)
|
|
*
|
|
* Copyright (c) 2012 - 2014, ARM Limited. All rights reserved.
|
|
*
|
|
* This program and the accompanying materials
|
|
* 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
|
|
*
|
|
* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
*
|
|
**/
|
|
|
|
#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
|
|
#define GTDT_GLOBAL_FLAGS_NOT_MAPPED 0
|
|
#define GTDT_GLOBAL_FLAGS_EDGE EFI_ACPI_5_0_GTDT_GLOBAL_FLAG_INTERRUPT_MODE
|
|
#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
|
|
#define GTDT_GLOBAL_FLAGS (GTDT_GLOBAL_FLAGS_MAPPED | GTDT_GLOBAL_FLAGS_LEVEL)
|
|
#else
|
|
#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 = {
|
|
ARM_ACPI_HEADER(
|
|
EFI_ACPI_5_0_GENERIC_TIMER_DESCRIPTION_TABLE_SIGNATURE,
|
|
EFI_ACPI_5_0_GENERIC_TIMER_DESCRIPTION_TABLE,
|
|
EFI_ACPI_5_0_GENERIC_TIMER_DESCRIPTION_TABLE_REVISION
|
|
),
|
|
SYSTEM_TIMER_BASE_ADDRESS, // UINT64 PhysicalAddress
|
|
GTDT_GLOBAL_FLAGS, // UINT32 GlobalFlags
|
|
FixedPcdGet32 (PcdArmArchTimerSecIntrNum), // UINT32 SecurePL1TimerGSIV
|
|
GTDT_GTIMER_FLAGS, // UINT32 SecurePL1TimerFlags
|
|
FixedPcdGet32 (PcdArmArchTimerIntrNum), // UINT32 NonSecurePL1TimerGSIV
|
|
GTDT_GTIMER_FLAGS, // UINT32 NonSecurePL1TimerFlags
|
|
FixedPcdGet32 (PcdArmArchTimerVirtIntrNum), // UINT32 VirtualTimerGSIV
|
|
GTDT_GTIMER_FLAGS, // UINT32 VirtualTimerFlags
|
|
FixedPcdGet32 (PcdArmArchTimerHypIntrNum), // UINT32 NonSecurePL2TimerGSIV
|
|
GTDT_GTIMER_FLAGS // UINT32 NonSecurePL2TimerFlags
|
|
};
|
|
#else
|
|
#pragma pack (1)
|
|
|
|
typedef struct {
|
|
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 = {
|
|
{
|
|
ARM_ACPI_HEADER(
|
|
EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLE_SIGNATURE,
|
|
EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLE,
|
|
EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLE_REVISION
|
|
),
|
|
SYSTEM_TIMER_BASE_ADDRESS, // UINT64 PhysicalAddress
|
|
0, // UINT32 Reserved
|
|
FixedPcdGet32 (PcdArmArchTimerSecIntrNum), // UINT32 SecurePL1TimerGSIV
|
|
GTDT_GTIMER_FLAGS, // UINT32 SecurePL1TimerFlags
|
|
FixedPcdGet32 (PcdArmArchTimerIntrNum), // UINT32 NonSecurePL1TimerGSIV
|
|
GTDT_GTIMER_FLAGS, // UINT32 NonSecurePL1TimerFlags
|
|
FixedPcdGet32 (PcdArmArchTimerVirtIntrNum), // UINT32 VirtualTimerGSIV
|
|
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(
|
|
FixedPcdGet32 (PcdGenericWatchdogRefreshBase), FixedPcdGet32 (PcdGenericWatchdogControlBase), 93, 0),
|
|
EFI_ACPI_5_1_SBSA_GENERIC_WATCHDOG_STRUCTURE_INIT(
|
|
FixedPcdGet32 (PcdGenericWatchdogRefreshBase), FixedPcdGet32 (PcdGenericWatchdogControlBase), 94, EFI_ACPI_5_1_GTDT_SBSA_GENERIC_WATCHDOG_FLAG_SECURE_TIMER)
|
|
}
|
|
};
|
|
#endif
|
|
|
|
VOID*
|
|
ReferenceAcpiTable (
|
|
VOID
|
|
)
|
|
{
|
|
//
|
|
// Reference the table being generated to prevent the optimizer from removing the
|
|
// data structure from the exeutable
|
|
//
|
|
return (VOID*)&Gtdt;
|
|
}
|