1 files changed, 87 insertions, 0 deletions
diff --git a/os/hal/include/hal_trng.h b/os/hal/include/hal_trng.h
new file mode 100644
index 000000000..48d95613e
--- /dev/null
+++ b/os/hal/include/hal_trng.h
@@ -0,0 +1,87 @@
+/*
+    ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+/**
+ * @file    hal_trng.h
+ * @brief   TRNG Driver macros and structures.
+ *
+ * @addtogroup TRNG
+ * @{
+ */
+
+#ifndef HAL_TRNG_H
+#define HAL_TRNG_H
+
+#if (HAL_USE_TRNG == TRUE) || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver constants.                                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver pre-compile time settings.                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Derived constants and error checks.                                       */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver data structures and types.                                         */
+/*===========================================================================*/
+
+/**
+ * @brief   Driver state machine possible states.
+ */
+typedef enum {
+  TRNG_UNINIT = 0,                   /**< Not initialized.                   */
+  TRNG_STOP = 1,                     /**< Stopped.                           */
+  TRNG_READY = 2,                    /**< Ready.                             */
+  TRNG_RUNNING = 3                   /**< Generating random number.          */
+} trngstate_t;
+
+/**
+ * @brief   Type of a structure representing a TRNG driver.
+ */
+typedef struct TRNGDriver TRNGDriver;
+
+#include "hal_trng_lld.h"
+
+/*===========================================================================*/
+/* Driver macros.                                                            */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* External declarations.                                                    */
+/*===========================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void trngInit(void);
+  void trngObjectInit(TRNGDriver *trngp);
+  void trngStart(TRNGDriver *trngp, const TRNGConfig *config);
+  void trngStop(TRNGDriver *trngp);
+  bool trngGenerate(TRNGDriver *trngp, size_t size, uint8_t *out);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_TRNG == TRUE */
+
+#endif /* HAL_TRNG_H */
+
+/** @} */