diff --git a/include/lib/extensions/pmuv3.h b/include/lib/extensions/pmuv3.h
new file mode 100644
index 0000000..5d5d055
--- /dev/null
+++ b/include/lib/extensions/pmuv3.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2023, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef PMUV3_H
+#define PMUV3_H
+
+#include <context.h>
+
+void pmuv3_disable_el3(void);
+
+#ifdef __aarch64__
+void pmuv3_enable(cpu_context_t *ctx);
+void pmuv3_init_el2_unused(void);
+#endif /* __aarch64__ */
+
+#endif /* PMUV3_H */