diff --git a/plat/st/common/include/stm32cubeprogrammer.h b/plat/st/common/include/stm32cubeprogrammer.h
new file mode 100644
index 0000000..503d919
--- /dev/null
+++ b/plat/st/common/include/stm32cubeprogrammer.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2021, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef STM32CUBEPROGRAMMER_H
+#define STM32CUBEPROGRAMMER_H
+
+#include <stdint.h>
+
+#include <usb_dfu.h>
+
+/* Phase definition */
+#define PHASE_FLASHLAYOUT	0U
+#define PHASE_SSBL		3U
+#define PHASE_CMD		0xF1U
+#define PHASE_RESET		0xFFU
+
+/* Functions provided by plat */
+uint8_t usb_dfu_get_phase(uint8_t alt);
+
+int stm32cubeprog_usb_load(struct usb_handle *usb_core_handle,
+			   uintptr_t ssbl_base,
+			   size_t ssbl_len);
+
+#endif /* STM32CUBEPROGRAMMER_H */