From 98aeb732ffd81f00bde3fb7dd2a4ff65690ebe7f Mon Sep 17 00:00:00 2001
From: Giovanni Di Sirio <gdisirio@gmail.com>
Date: Sun, 9 Sep 2018 09:41:52 +0000
Subject: New TRNG driver model added to HAL.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@12253 110e8d01-0319-4d1e-a829-52ad28d1bb01
---
 os/hal/include/hal.h      |  5 +++
 os/hal/include/hal_trng.h | 87 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 92 insertions(+)
 create mode 100644 os/hal/include/hal_trng.h

(limited to 'os/hal/include')

diff --git a/os/hal/include/hal.h b/os/hal/include/hal.h
index b464fdcda..4b2ba597c 100644
--- a/os/hal/include/hal.h
+++ b/os/hal/include/hal.h
@@ -98,6 +98,10 @@
 #define HAL_USE_SPI                         FALSE
 #endif
 
+#if !defined(HAL_USE_TRNG)
+#define HAL_USE_TRNG                        FALSE
+#endif
+
 #if !defined(HAL_USE_UART)
 #define HAL_USE_UART                        FALSE
 #endif
@@ -147,6 +151,7 @@
 #include "hal_serial.h"
 #include "hal_sdc.h"
 #include "hal_spi.h"
+#include "hal_trng.h"
 #include "hal_uart.h"
 #include "hal_usb.h"
 #include "hal_wdg.h"
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 */
+
+/** @} */
-- 
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