ArmPlatformPkg/ArmPlatformLib: Added support for ArmPlatformIsPrimaryCore()

Checking if a core if the primary/boot core used to be done with the macro
IS_PRIMARY_CORE().
Some platforms exposes configuration registers to change the primary core.
Replacing the macro IS_PRIMARY_CORE() by ArmPlatformIsPrimaryCore() allows
some flexibility in the way to check the primary core.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Acked-by: Ryan Harkin <ryan.harkin@linaro.org>


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14344 6f19259b-4bc3-4df7-8a09-765794883524

BeagleBoardPkg/Library/BeagleBoardLib/BeagleBoardHelper.S

@@ -0,0 +1,31 @@
+#
+#  Copyright (c) 2012, 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 <AsmMacroIoLib.h>
+#include <AutoGen.h>
+
+.text
+.align 2
+
+GCC_ASM_EXPORT(ArmPlatformIsPrimaryCore)
+
+//UINTN
+//ArmPlatformIsPrimaryCore (
+//  IN UINTN MpId
+//  );
+ASM_PFX(ArmPlatformIsPrimaryCore):
+  // BeagleBoard has a single core. We must always return 1.
+  mov	r0, #1
+  bx 	lr
+
+ASM_FUNCTION_REMOVE_IF_UNREFERENCED 

BeagleBoardPkg/Library/BeagleBoardLib/BeagleBoardHelper.asm

@@ -0,0 +1,36 @@
+//
+//  Copyright (c) 2012, 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 <AsmMacroIoLib.h>
+#include <Base.h>
+
+#include <AutoGen.h>
+
+  INCLUDE AsmMacroIoLib.inc
+
+  EXPORT    ArmPlatformIsPrimaryCore
+
+  AREA BeagleBoardHelper, CODE, READONLY
+
+//UINTN
+//ArmPlatformIsPrimaryCore (
+//  IN UINTN MpId
+//  );
+ArmPlatformIsPrimaryCore FUNCTION
+  // BeagleBoard has a single core. We must always return 1.
+  mov	r0, #1
+  bx 	lr
+  ENDFUNC
+
+  END
+

BeagleBoardPkg/Library/BeagleBoardLib/BeagleBoardLib.inf

@@ -39,6 +39,8 @@
   BeagleBoardMem.c
   PadConfiguration.c
   Clock.c
+  BeagleBoardHelper.S    | GCC
+  BeagleBoardHelper.asm  | RVCT
 
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