1 files changed, 11 insertions, 0 deletions
diff --git a/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibCTA9x4/CTA9x4Helper.asm b/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibCTA9x4/CTA9x4Helper.asm
index 429026e015..246ea554d8 100644
--- a/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibCTA9x4/CTA9x4Helper.asm
+++ b/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibCTA9x4/CTA9x4Helper.asm
@@ -18,6 +18,7 @@
   INCLUDE AsmMacroIoLib.inc
 
   EXPORT  ArmPlatformIsPrimaryCore
+  EXPORT  ArmPlatformGetPrimaryCoreMpId
 
   IMPORT  _gPcd_FixedAtBuild_PcdArmPrimaryCore
   IMPORT  _gPcd_FixedAtBuild_PcdArmPrimaryCoreMask
@@ -25,6 +26,16 @@
   AREA CTA9x4Helper, CODE, READONLY
 
 //UINTN
+//ArmPlatformGetPrimaryCoreMpId (
+//  VOID
+//  );
+ArmPlatformGetPrimaryCoreMpId FUNCTION
+  LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask, r0)
+  ldr     r0, [r0]
+  bx 	  lr
+  ENDFUNC
+
+//UINTN
 //ArmPlatformIsPrimaryCore (
 //  IN UINTN MpId
 //  );