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author | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-05-10 12:41:27 +0000 |
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committer | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-05-10 12:41:27 +0000 |
commit | bebda7ceec3d3024c76b3c2ed0c9b4e502a13d61 (patch) | |
tree | 9c2d34dc7e57c2c52224c2990946778d955359fe /ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibCTA9x4/CTA9x4Helper.asm | |
parent | bc7b889a033a2617b650fbb5596d4f02530090bd (diff) | |
download | edk2-platforms-bebda7ceec3d3024c76b3c2ed0c9b4e502a13d61.tar.xz |
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
Diffstat (limited to 'ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibCTA9x4/CTA9x4Helper.asm')
-rw-r--r-- | ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibCTA9x4/CTA9x4Helper.asm | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibCTA9x4/CTA9x4Helper.asm b/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibCTA9x4/CTA9x4Helper.asm new file mode 100644 index 0000000000..429026e015 --- /dev/null +++ b/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibCTA9x4/CTA9x4Helper.asm @@ -0,0 +1,43 @@ +//
+// Copyright (c) 2013, 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>
+
+ INCLUDE AsmMacroIoLib.inc
+
+ EXPORT ArmPlatformIsPrimaryCore
+
+ IMPORT _gPcd_FixedAtBuild_PcdArmPrimaryCore
+ IMPORT _gPcd_FixedAtBuild_PcdArmPrimaryCoreMask
+
+ AREA CTA9x4Helper, CODE, READONLY
+
+//UINTN
+//ArmPlatformIsPrimaryCore (
+// IN UINTN MpId
+// );
+ArmPlatformIsPrimaryCore FUNCTION
+ LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask, r1)
+ ldr r1, [r1]
+ and r0, r0, r1
+ LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCore, r1)
+ ldr r1, [r1]
+ cmp r0, r1
+ moveq r0, #1
+ movne r0, #0
+ bx lr
+ ENDFUNC
+
+ END
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