ArmPlatformPkg/ArmVExpressPkg: Added support to differentiate ARMv8 FVP variants

There are three FVP variants for the Base and Foundation models:
- model with GICv2 legacy memory map (same location as the Versatile Express model)
- model with GICv2 and Base model memory map
- model with GICv3 and Base model memory map

The new code detects the variants to load the appropriate device tree.

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@16932 6f19259b-4bc3-4df7-8a09-765794883524

ArmPlatformPkg/ArmVExpressPkg/Library/PL111LcdArmVExpressLib/PL111LcdArmVExpress.c

@@ -1,6 +1,6 @@
 /** @file
 
-  Copyright (c) 2011-2013, ARM Ltd. All rights reserved.<BR>
+  Copyright (c) 2011-2015, ARM Ltd. All rights reserved.<BR>
   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
@@ -269,7 +269,7 @@ LcdPlatformSetMode (
   if (SysId != ARM_RTSM_SYS_ID) {
     // Take out the FVP GIC variant to reduce the permutations.
     SysId &= ~ARM_FVP_SYS_ID_VARIANT_MASK;
-    if (SysId != (ARM_FVP_BASE_SYS_ID & ~ARM_FVP_SYS_ID_VARIANT_MASK)) {
+    if (SysId != ARM_FVP_BASE_BOARD_SYS_ID) {
       // Set the DVI into the new mode
       Status = ArmPlatformSysConfigSet (SYS_CFG_DVIMODE, mResolutions[ModeNumber].Mode);
       if (EFI_ERROR(Status)) {