1 files changed, 33 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseCpuLib/AArch64/CpuSleep.S b/roms/edk2/MdePkg/Library/BaseCpuLib/AArch64/CpuSleep.S
new file mode 100644
index 000000000..410a27156
--- /dev/null
+++ b/roms/edk2/MdePkg/Library/BaseCpuLib/AArch64/CpuSleep.S
@@ -0,0 +1,33 @@
+#------------------------------------------------------------------------------
+#
+# CpuSleep() for AArch64
+#
+# Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
+# Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+# Portions copyright (c) 2011 - 2013, ARM LTD. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#------------------------------------------------------------------------------
+
+.text
+.align 3
+GCC_ASM_EXPORT(CpuSleep)
+
+#/**
+#  Places the CPU in a sleep state until an interrupt is received.
+#
+#  Places the CPU in a sleep state until an interrupt is received. If interrupts
+#  are disabled prior to calling this function, then the CPU will be placed in a
+#  sleep state indefinitely.
+#
+#**/
+#VOID
+#EFIAPI
+#CpuSleep (
+#  VOID
+#  );
+#
+
+ASM_PFX(CpuSleep):
+    wfi
+    ret