1 files changed, 5 insertions, 0 deletions
diff --git a/ArmPkg/Library/ArmLib/Arm11/Arm11Support.S b/ArmPkg/Library/ArmLib/Arm11/Arm11Support.S
index 2f4be7e93..e18023e6a 100644
--- a/ArmPkg/Library/ArmLib/Arm11/Arm11Support.S
+++ b/ArmPkg/Library/ArmLib/Arm11/Arm11Support.S
@@ -43,6 +43,7 @@ GCC_ASM_EXPORT(ArmSetHighVectors)
 GCC_ASM_EXPORT(ArmIsMpCore)
 GCC_ASM_EXPORT(ArmCallWFI)
 GCC_ASM_EXPORT(ArmReadMpidr)
+GCC_ASM_EXPORT(ArmReadMidr)
 GCC_ASM_EXPORT(ArmUpdateTranslationTableEntry)
 GCC_ASM_EXPORT(ArmEnableFiq)
 GCC_ASM_EXPORT(ArmDisableFiq)
@@ -216,6 +217,10 @@ ASM_PFX(ArmReadMpidr):
   mrc     p15, 0, r0, c0, c0, 5       @ read MPIDR
   bx      lr
 
+ASM_PFX(ArmReadMpidr):
+  mrc     p15, 0, r0, c0, c0, 0       @ Read Main ID Register
+  bx      lr
+
 ASM_PFX(ArmEnableFiq):
   mrs     R0,CPSR
   bic     R0,R0,#0x40    @Enable FIQ interrupts