1 files changed, 70 insertions, 0 deletions
diff --git a/ArmPlatformPkg/ArmJunoPkg/AcpiTables/Gtdt.aslc b/ArmPlatformPkg/ArmJunoPkg/AcpiTables/Gtdt.aslc
new file mode 100644
index 000000000..ac74fbcab
--- /dev/null
+++ b/ArmPlatformPkg/ArmJunoPkg/AcpiTables/Gtdt.aslc
@@ -0,0 +1,70 @@
+/** @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     0
+#endif
+
+#define GTDT_TIMER_EDGE_TRIGGERED   (1 << EFI_ACPI_5_0_GTDT_TIMER_FLAG_TIMER_INTERRUPT_MODE)
+#define GTDT_TIMER_LEVEL_TRIGGERED  (0 << EFI_ACPI_5_0_GTDT_TIMER_FLAG_TIMER_INTERRUPT_MODE)
+#define GTDT_TIMER_ACTIVE_LOW       (1 << EFI_ACPI_5_0_GTDT_TIMER_FLAG_TIMER_INTERRUPT_POLARITY)
+#define GTDT_TIMER_ACTIVE_HIGH      (0 << EFI_ACPI_5_0_GTDT_TIMER_FLAG_TIMER_INTERRUPT_POLARITY)
+
+#define GTDT_GTIMER_FLAGS           (GTDT_TIMER_ACTIVE_LOW | GTDT_TIMER_LEVEL_TRIGGERED)
+
+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
+};
+
+
+VOID*
+ReferenceAcpiTable (
+  VOID
+  )
+{
+  //
+  // Reference the table being generated to prevent the optimizer from removing the
+  // data structure from the exeutable
+  //
+  return (VOID*)&Gtdt;
+}