diff --git a/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/AARCH64/RelocatableVirtHelper.S b/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/AARCH64/RelocatableVirtHelper.S
index 0980a38720..27ad07a1a1 100644
--- a/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/AARCH64/RelocatableVirtHelper.S
+++ b/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/AARCH64/RelocatableVirtHelper.S
@@ -82,8 +82,8 @@ ASM_PFX(ArmPlatformPeiBootAction):
   // encountered. Since we are calling a C function, use the window at the
   // beginning of the FD image as a temp stack.
   //
-  adr   x1, PcdGet64 (PcdSystemMemorySize)
-  adr   x2, PcdGet64 (PcdSystemMemoryBase)
+  adr   x1, PcdGet64 (PcdSystemMemoryBase)
+  adr   x2, PcdGet64 (PcdSystemMemorySize)
   mov   sp, x7
   bl    FindMemnode
   cbz   x0, .Lout
diff --git a/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/ARM/RelocatableVirtHelper.S b/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/ARM/RelocatableVirtHelper.S
index 3d77ea2157..097038806e 100644
--- a/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/ARM/RelocatableVirtHelper.S
+++ b/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/ARM/RelocatableVirtHelper.S
@@ -79,8 +79,8 @@ ASM_PFX(ArmPlatformPeiBootAction):
   // encountered. Since we are calling a C function, use the window at the
   // beginning of the FD image as a temp stack.
   //
-  ldr   r1, =PcdGet64 (PcdSystemMemorySize)
-  ldr   r2, =PcdGet64 (PcdSystemMemoryBase)
+  ldr   r1, =PcdGet64 (PcdSystemMemoryBase)
+  ldr   r2, =PcdGet64 (PcdSystemMemorySize)
   mov   sp, r5
   bl    FindMemnode
   teq   r0, #0
diff --git a/ArmVirtPkg/Library/ArmXenRelocatablePlatformLib/AARCH64/RelocatableVirtHelper.S b/ArmVirtPkg/Library/ArmXenRelocatablePlatformLib/AARCH64/RelocatableVirtHelper.S
index ae77492bf3..940bcb2d25 100644
--- a/ArmVirtPkg/Library/ArmXenRelocatablePlatformLib/AARCH64/RelocatableVirtHelper.S
+++ b/ArmVirtPkg/Library/ArmXenRelocatablePlatformLib/AARCH64/RelocatableVirtHelper.S
@@ -81,8 +81,8 @@ ASM_PFX(ArmPlatformPeiBootAction):
   // encountered. Since we are calling a C function, use the window at the
   // beginning of the FD image as a temp stack.
   //
-  adr   x1, PcdGet64 (PcdSystemMemorySize)
-  adr   x2, PcdGet64 (PcdSystemMemoryBase)
+  adr   x1, PcdGet64 (PcdSystemMemoryBase)
+  adr   x2, PcdGet64 (PcdSystemMemorySize)
   mov   sp, x7
   bl    FindMemnode
   cbz   x0, .Lout
diff --git a/ArmVirtPkg/Library/ArmXenRelocatablePlatformLib/ARM/RelocatableVirtHelper.S b/ArmVirtPkg/Library/ArmXenRelocatablePlatformLib/ARM/RelocatableVirtHelper.S
index b69c6d618a..539426f36f 100644
--- a/ArmVirtPkg/Library/ArmXenRelocatablePlatformLib/ARM/RelocatableVirtHelper.S
+++ b/ArmVirtPkg/Library/ArmXenRelocatablePlatformLib/ARM/RelocatableVirtHelper.S
@@ -78,8 +78,8 @@ ASM_PFX(ArmPlatformPeiBootAction):
   // encountered. Since we are calling a C function, use the window at the
   // beginning of the FD image as a temp stack.
   //
-  ldr   r1, =PcdGet64 (PcdSystemMemorySize)
-  ldr   r2, =PcdGet64 (PcdSystemMemoryBase)
+  ldr   r1, =PcdGet64 (PcdSystemMemoryBase)
+  ldr   r2, =PcdGet64 (PcdSystemMemorySize)
   mov   sp, r5
   bl    FindMemnode
   teq   r0, #0