1 files changed, 31 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseLib/Arm/DisableInterrupts.asm b/roms/edk2/MdePkg/Library/BaseLib/Arm/DisableInterrupts.asm
new file mode 100644
index 000000000..e4e90b5f7
--- /dev/null
+++ b/roms/edk2/MdePkg/Library/BaseLib/Arm/DisableInterrupts.asm
@@ -0,0 +1,31 @@
+;------------------------------------------------------------------------------
+;
+; DisableInterrupts() for ARM
+;
+; Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
+; Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+; SPDX-License-Identifier: BSD-2-Clause-Patent
+;
+;------------------------------------------------------------------------------
+
+    EXPORT DisableInterrupts
+
+    AREA Interrupt_disable, CODE, READONLY
+
+;/**
+;  Disables CPU interrupts.
+;
+;**/
+;VOID
+;EFIAPI
+;DisableInterrupts (
+;  VOID
+;  );
+;
+DisableInterrupts
+    MRS     R0,CPSR
+    ORR     R0,R0,#0x80             ;Disable IRQ interrupts
+    MSR     CPSR_c,R0
+    BX      LR
+
+    END