ArmPlatformPkg/ArmPlatformLib: Added support for ArmPlatformIsPrimaryCore()

[mirror_edk2.git] / ArmPkg / Include / AsmMacroIoLib.inc

diff --git a/ArmPkg/Include/AsmMacroIoLib.inc b/ArmPkg/Include/AsmMacroIoLib.inc
index 1ca99fdd1d9ab99bb87c53c8b905205ea6ba9182..5796adcb12970fad235326ad42a0d86c0a224b90 100644 (file)
--- a/ArmPkg/Include/AsmMacroIoLib.inc
+++ b/ArmPkg/Include/AsmMacroIoLib.inc
@@ -82,6 +82,10 @@
   \r
   MACRO\r
   GetCorePositionFromMpId $Pos, $MpId, $Tmp\r
+  ;Note: The ARM macro does not support the pre-processing. 0xFF and (0xFF << 8) are the values of\r
+  ;      ARM_CORE_MASK and ARM_CLUSTER_MASK \r
+  mov   $Tmp, #(0xFF :OR: (0xFF << 8))\r
+  and   $MpId, $Tmp\r
   lsr   $Pos, $MpId, #6\r
   and   $Tmp, $MpId, #3\r
   add   $Pos, $Pos, $Tmp\r