ArmPlatformPkg/ArmJunoPkg/AcpiTables/Gtdt.aslc

   1 /** @file
   2 *  Generic Timer Description Table (GTDT)
   3 *
   4 *  Copyright (c) 2012 - 2014, ARM Limited. All rights reserved.
   5 *
   6 *  This program and the accompanying materials
   7 *  are licensed and made available under the terms and conditions of the BSD License
   8 *  which accompanies this distribution.  The full text of the license may be found at
   9 *  http://opensource.org/licenses/bsd-license.php
  10 *
  11 *  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12 *  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13 *
  14 **/
  15
  16 #include "ArmPlatform.h"
  17 #include <Library/AcpiLib.h>
  18 #include <Library/PcdLib.h>
  19 #include <IndustryStandard/Acpi.h>
  20
  21 #define GTDT_GLOBAL_FLAGS_MAPPED      EFI_ACPI_5_0_GTDT_GLOBAL_FLAG_MEMORY_MAPPED_BLOCK_PRESENT
  22 #define GTDT_GLOBAL_FLAGS_NOT_MAPPED  0
  23 #define GTDT_GLOBAL_FLAGS_EDGE        EFI_ACPI_5_0_GTDT_GLOBAL_FLAG_INTERRUPT_MODE
  24 #define GTDT_GLOBAL_FLAGS_LEVEL       0
  25
  26 // Note: We could have a build flag that switches between memory mapped/non-memory mapped timer
  27 #ifdef SYSTEM_TIMER_BASE_ADDRESS
  28   #define GTDT_GLOBAL_FLAGS             (GTDT_GLOBAL_FLAGS_MAPPED | GTDT_GLOBAL_FLAGS_LEVEL)
  29 #else
  30   #define GTDT_GLOBAL_FLAGS             (GTDT_GLOBAL_FLAGS_NOT_MAPPED | GTDT_GLOBAL_FLAGS_LEVEL)
  31   #define SYSTEM_TIMER_BASE_ADDRESS     0xFFFFFFFFFFFFFFFF
  32 #endif
  33
  34 #define GTDT_TIMER_EDGE_TRIGGERED   EFI_ACPI_5_0_GTDT_TIMER_FLAG_TIMER_INTERRUPT_MODE
  35 #define GTDT_TIMER_LEVEL_TRIGGERED  0
  36 #define GTDT_TIMER_ACTIVE_LOW       EFI_ACPI_5_0_GTDT_TIMER_FLAG_TIMER_INTERRUPT_POLARITY
  37 #define GTDT_TIMER_ACTIVE_HIGH      0
  38
  39 #define GTDT_GTIMER_FLAGS           (GTDT_TIMER_ACTIVE_LOW | GTDT_TIMER_LEVEL_TRIGGERED)
  40
  41 #ifdef ARM_JUNO_ACPI_5_0
  42   EFI_ACPI_5_0_GENERIC_TIMER_DESCRIPTION_TABLE Gtdt = {
  43     ARM_ACPI_HEADER(
  44       EFI_ACPI_5_0_GENERIC_TIMER_DESCRIPTION_TABLE_SIGNATURE,
  45       EFI_ACPI_5_0_GENERIC_TIMER_DESCRIPTION_TABLE,
  46       EFI_ACPI_5_0_GENERIC_TIMER_DESCRIPTION_TABLE_REVISION
  47     ),
  48     SYSTEM_TIMER_BASE_ADDRESS,                    // UINT64  PhysicalAddress
  49     GTDT_GLOBAL_FLAGS,                            // UINT32  GlobalFlags
  50     FixedPcdGet32 (PcdArmArchTimerSecIntrNum),    // UINT32  SecurePL1TimerGSIV
  51     GTDT_GTIMER_FLAGS,                            // UINT32  SecurePL1TimerFlags
  52     FixedPcdGet32 (PcdArmArchTimerIntrNum),       // UINT32  NonSecurePL1TimerGSIV
  53     GTDT_GTIMER_FLAGS,                            // UINT32  NonSecurePL1TimerFlags
  54     FixedPcdGet32 (PcdArmArchTimerVirtIntrNum),   // UINT32  VirtualTimerGSIV
  55     GTDT_GTIMER_FLAGS,                            // UINT32  VirtualTimerFlags
  56     FixedPcdGet32 (PcdArmArchTimerHypIntrNum),    // UINT32  NonSecurePL2TimerGSIV
  57     GTDT_GTIMER_FLAGS                             // UINT32  NonSecurePL2TimerFlags
  58   };
  59 #else
  60   #pragma pack (1)
  61
  62   typedef struct {
  63     EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLE          Gtdt;
  64     EFI_ACPI_5_1_GTDT_SBSA_GENERIC_WATCHDOG_STRUCTURE     Watchdogs[JUNO_WATCHDOG_COUNT];
  65   } EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLES;
  66
  67   #pragma pack ()
  68
  69   EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLES Gtdt = {
  70     {
  71       ARM_ACPI_HEADER(
  72         EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLE_SIGNATURE,
  73         EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLE,
  74         EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLE_REVISION
  75       ),
  76       SYSTEM_TIMER_BASE_ADDRESS,                    // UINT64  PhysicalAddress
  77       0,                                            // UINT32  Reserved
  78       FixedPcdGet32 (PcdArmArchTimerSecIntrNum),    // UINT32  SecurePL1TimerGSIV
  79       GTDT_GTIMER_FLAGS,                            // UINT32  SecurePL1TimerFlags
  80       FixedPcdGet32 (PcdArmArchTimerIntrNum),       // UINT32  NonSecurePL1TimerGSIV
  81       GTDT_GTIMER_FLAGS,                            // UINT32  NonSecurePL1TimerFlags
  82       FixedPcdGet32 (PcdArmArchTimerVirtIntrNum),   // UINT32  VirtualTimerGSIV
  83       GTDT_GTIMER_FLAGS,                            // UINT32  VirtualTimerFlags
  84       FixedPcdGet32 (PcdArmArchTimerHypIntrNum),    // UINT32  NonSecurePL2TimerGSIV
  85       GTDT_GTIMER_FLAGS,                            // UINT32  NonSecurePL2TimerFlags
  86       0xFFFFFFFFFFFFFFFF,                           // UINT64  CntReadBasePhysicalAddress
  87       JUNO_WATCHDOG_COUNT,                          // UINT32  PlatformTimerCount
  88       sizeof (EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLE) // UINT32 PlatfromTimerOffset
  89     },
  90     {
  91       EFI_ACPI_5_1_SBSA_GENERIC_WATCHDOG_STRUCTURE_INIT(
  92           FixedPcdGet32 (PcdGenericWatchdogRefreshBase), FixedPcdGet32 (PcdGenericWatchdogControlBase), 93, 0),
  93       EFI_ACPI_5_1_SBSA_GENERIC_WATCHDOG_STRUCTURE_INIT(
  94           FixedPcdGet32 (PcdGenericWatchdogRefreshBase), FixedPcdGet32 (PcdGenericWatchdogControlBase), 94, EFI_ACPI_5_1_GTDT_SBSA_GENERIC_WATCHDOG_FLAG_SECURE_TIMER)
  95     }
  96   };
  97 #endif
  98
  99 //
 100 // Reference the table being generated to prevent the optimizer from removing the
 101 // data structure from the executable
 102 //
 103 VOID* CONST ReferenceAcpiTable = &Gtdt;