ArmPkg/ArmGic: Introduced support for GicV2 to ArmGicLib

The support for GIcV2 was already existing. This change separate the GicV2
specific functions from the common Gic code (in preparation for GicV3 support).

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15626 6f19259b-4bc3-4df7-8a09-765794883524

ArmPkg/Drivers/ArmGic/GicV2/ArmGicV2Lib.c

@@ -0,0 +1,36 @@
+/** @file
+*
+*  Copyright (c) 2013-2014, 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 <Library/ArmGicLib.h>
+#include <Library/IoLib.h>
+
+UINTN
+EFIAPI
+ArmGicV2AcknowledgeInterrupt (
+  IN  UINTN          GicInterruptInterfaceBase
+  )
+{
+  // Read the Interrupt Acknowledge Register
+  return MmioRead32 (GicInterruptInterfaceBase + ARM_GIC_ICCIAR);
+}
+
+VOID
+EFIAPI
+ArmGicV2EndOfInterrupt (
+  IN  UINTN                 GicInterruptInterfaceBase,
+  IN UINTN                  Source
+  )
+{
+  MmioWrite32 (GicInterruptInterfaceBase + ARM_GIC_ICCEIOR, Source);
+}