diff --git a/include/lib/spinlock.h b/include/lib/spinlock.h
new file mode 100644
index 0000000..27ea730
--- /dev/null
+++ b/include/lib/spinlock.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2018, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __SPINLOCK_H__
+#define __SPINLOCK_H__
+
+typedef struct spinlock {
+	volatile unsigned int lock;
+} spinlock_t;
+
+void init_spinlock(spinlock_t *lock);
+void spin_lock(spinlock_t *lock);
+void spin_unlock(spinlock_t *lock);
+
+#endif /* __SPINLOCK_H__ */