1 files changed, 113 insertions, 0 deletions
diff --git a/Platform/ARM/JunoPkg/AcpiTables/Gtdt.aslc b/Platform/ARM/JunoPkg/AcpiTables/Gtdt.aslc
new file mode 100644
index 0000000000..5e83802d57
--- /dev/null
+++ b/Platform/ARM/JunoPkg/AcpiTables/Gtdt.aslc
@@ -0,0 +1,113 @@
+/** @file
+*  Generic Timer Description Table (GTDT)
+*
+*  Copyright (c) 2012 - 2016, 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;
+#if (JUNO_WATCHDOG_COUNT != 0)
+    EFI_ACPI_5_1_GTDT_SBSA_GENERIC_WATCHDOG_STRUCTURE     Watchdogs[JUNO_WATCHDOG_COUNT];
+#endif
+  } GENERIC_TIMER_DESCRIPTION_TABLE;
+
+  #pragma pack ()
+
+  GENERIC_TIMER_DESCRIPTION_TABLE Gtdt = {
+    {
+      ARM_ACPI_HEADER(
+        EFI_ACPI_5_1_GENERIC_TIMER_DESCRIPTION_TABLE_SIGNATURE,
+        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
+    },
+#if (JUNO_WATCHDOG_COUNT != 0)
+    {
+      EFI_ACPI_5_1_SBSA_GENERIC_WATCHDOG_STRUCTURE_INIT(
+          FixedPcdGet64 (PcdGenericWatchdogRefreshBase),
+          FixedPcdGet64 (PcdGenericWatchdogControlBase),
+          93,
+          0),
+      EFI_ACPI_5_1_SBSA_GENERIC_WATCHDOG_STRUCTURE_INIT(
+          FixedPcdGet64 (PcdGenericWatchdogRefreshBase),
+          FixedPcdGet64 (PcdGenericWatchdogControlBase),
+          94,
+          EFI_ACPI_5_1_GTDT_SBSA_GENERIC_WATCHDOG_FLAG_SECURE_TIMER)
+    }
+#endif
+  };
+#endif
+
+//
+// Reference the table being generated to prevent the optimizer from removing the
+// data structure from the executable
+//
+VOID* CONST ReferenceAcpiTable = &Gtdt;