diff --git a/ArmPlatformPkg/Sec/AArch64/SecEntryPoint.S b/ArmPlatformPkg/Sec/AArch64/SecEntryPoint.S
index 3512ccd84d..000b56f573 100644
--- a/ArmPlatformPkg/Sec/AArch64/SecEntryPoint.S
+++ b/ArmPlatformPkg/Sec/AArch64/SecEntryPoint.S
@@ -99,11 +99,7 @@ _SetupPrimaryCoreStack:
   LoadConstantToReg (FixedPcdGet32(PcdCPUCoreSecPrimaryStackSize), x2)
   add   x1, x1, x2
 
-  LoadConstantToReg (FixedPcdGet32(PcdSecGlobalVariableSize), x2)
-
-  // The reserved space for global variable must be 8-bytes aligned for pushing
-  // 64-bit variable on the stack
-  SetPrimaryStack (x1, x2, x3, x4)
+  mov   sp, x1
   b     _PrepareArguments
 
 _SetupSecondaryCoreStack:
diff --git a/ArmPlatformPkg/Sec/Arm/SecEntryPoint.S b/ArmPlatformPkg/Sec/Arm/SecEntryPoint.S
index 51b91b965d..73c264810e 100644
--- a/ArmPlatformPkg/Sec/Arm/SecEntryPoint.S
+++ b/ArmPlatformPkg/Sec/Arm/SecEntryPoint.S
@@ -81,11 +81,7 @@ _SetupPrimaryCoreStack:
   LoadConstantToReg (FixedPcdGet32(PcdCPUCoreSecPrimaryStackSize), r2)
   add   r1, r1, r2
 
-  LoadConstantToReg (FixedPcdGet32(PcdSecGlobalVariableSize), r2)
-
-  // The reserved space for global variable must be 8-bytes aligned for pushing
-  // 64-bit variable on the stack
-  SetPrimaryStack (r1, r2, r3)
+  mov   sp, r1
   b     _PrepareArguments
 
 _SetupSecondaryCoreStack:
diff --git a/ArmPlatformPkg/Sec/Arm/SecEntryPoint.asm b/ArmPlatformPkg/Sec/Arm/SecEntryPoint.asm
index b30fab2141..c0cd410699 100644
--- a/ArmPlatformPkg/Sec/Arm/SecEntryPoint.asm
+++ b/ArmPlatformPkg/Sec/Arm/SecEntryPoint.asm
@@ -83,11 +83,7 @@ _SetupPrimaryCoreStack
   LoadConstantToReg (FixedPcdGet32(PcdCPUCoreSecPrimaryStackSize), r2)
   add   r1, r1, r2
 
-  LoadConstantToReg (FixedPcdGet32(PcdSecGlobalVariableSize), r2)
-
-  // The reserved space for global variable must be 8-bytes aligned for pushing
-  // 64-bit variable on the stack
-  SetPrimaryStack (r1, r2, r3)
+  mov   sp, r1
   b     _PrepareArguments
 
 _SetupSecondaryCoreStack
diff --git a/ArmPlatformPkg/Sec/Sec.inf b/ArmPlatformPkg/Sec/Sec.inf
index 7c6e7ffba1..7f7243f98f 100644
--- a/ArmPlatformPkg/Sec/Sec.inf
+++ b/ArmPlatformPkg/Sec/Sec.inf
@@ -81,7 +81,5 @@
   gArmTokenSpaceGuid.PcdGicDistributorBase
   gArmTokenSpaceGuid.PcdGicInterruptInterfaceBase
 
-  gArmPlatformTokenSpaceGuid.PcdSecGlobalVariableSize
-
 [FixedPcd.ARM]
   gArmTokenSpaceGuid.PcdArmNsacr