1 files changed, 38 insertions, 0 deletions
diff --git a/Platform/Intel/PurleyOpenBoardPkg/Acpi/BoardAcpiDxe/Dsdt/Itss.asl b/Platform/Intel/PurleyOpenBoardPkg/Acpi/BoardAcpiDxe/Dsdt/Itss.asl
new file mode 100644
index 0000000000..b6a7188cbb
--- /dev/null
+++ b/Platform/Intel/PurleyOpenBoardPkg/Acpi/BoardAcpiDxe/Dsdt/Itss.asl
@@ -0,0 +1,38 @@
+/** @file
+
+Copyright (c) 2018, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials are licensed and made available under
+the terms and conditions of the BSD License that 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.
+
+**/
+
+// ITSS
+// Define the needed ITSS registers used by ASL on Interrupt
+// mapping.
+
+scope(\_SB){
+      OperationRegion(ITSS, SystemMemory, 0xfdc43100, 0x208)
+      Field(ITSS, ByteAcc, NoLock, Preserve)
+      {
+        PARC, 8,
+        PBRC, 8,
+        PCRC, 8,
+        PDRC, 8,
+        PERC, 8,
+        PFRC, 8,
+        PGRC, 8,
+        PHRC, 8,
+       Offset(0x200),   // Offset 3300h ITSSPRC - ITSS Power Reduction Control
+            , 1,
+            , 1,
+        SCGE, 1,        // ITSSPRC[2]: 8254 Static Clock Gating Enable (8254CGE)
+
+      }
+}
+
+