1 files changed, 29 insertions, 0 deletions
diff --git a/include/lib/spinlock.h b/include/lib/spinlock.h
new file mode 100644
index 0000000..0bf3ee0
--- /dev/null
+++ b/include/lib/spinlock.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef SPINLOCK_H
+#define SPINLOCK_H
+
+#ifndef __ASSEMBLER__
+
+#include <stdint.h>
+
+typedef struct spinlock {
+	volatile uint32_t lock;
+} spinlock_t;
+
+void spin_lock(spinlock_t *lock);
+void spin_unlock(spinlock_t *lock);
+
+#else
+
+/* Spin lock definitions for use in assembly */
+#define SPINLOCK_ASM_ALIGN	2
+#define SPINLOCK_ASM_SIZE	4
+
+#endif
+
+#endif /* SPINLOCK_H */