diff --git a/include/arch/arm64/mm.h b/include/arch/arm64/mm.h
new file mode 100644
index 00000000000..373e0627cab
--- /dev/null
+++ b/include/arch/arm64/mm.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2021 Arm Limited (or its affiliates). All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#ifndef ZEPHYR_INCLUDE_ARCH_ARM64_MM_H_
+#define ZEPHYR_INCLUDE_ARCH_ARM64_MM_H_
+
+#if defined(CONFIG_ARM_MMU)
+#include <arch/arm64/arm_mmu.h>
+#elif defined(CONFIG_ARM_MPU)
+#include <arch/arm64/cortex_r/arm_mpu.h>
+#endif
+
+#ifndef _ASMLANGUAGE
+
+struct k_thread;
+void z_arm64_thread_mem_domains_init(struct k_thread *thread);
+void z_arm64_swap_mem_domains(struct k_thread *thread);
+
+#endif /* _ASMLANGUAGE */
+
+#endif /* ZEPHYR_INCLUDE_ARCH_ARM64_MM_H_ */