From e967c2b340e0273259b089fc9b339ae550614cc3 Mon Sep 17 00:00:00 2001
From: David Sidrane <david_s5@nscdg.com>
Date: Tue, 2 May 2017 11:04:23 -1000
Subject: [PATCH] board_common:Added new API point board_on_reset

  This optionally provided function called on entry to
  board_system_reset. It should perform any house keeping
  prior to retunring to do the rest.
---
 src/drivers/boards/common/board_common.h      | 18 ++++++++++++++++++
 src/drivers/boards/common/stm32/board_reset.c |  3 +++
 2 files changed, 21 insertions(+)

diff --git a/src/drivers/boards/common/board_common.h b/src/drivers/boards/common/board_common.h
index d905f1470b..ca3c51ec55 100644
--- a/src/drivers/boards/common/board_common.h
+++ b/src/drivers/boards/common/board_common.h
@@ -310,6 +310,24 @@ __EXPORT void board_rc_input(bool invert_on);
 #  endif
 #endif
 
+/************************************************************************************
+ * Name: board_on_reset
+ *
+ * Description:
+ * Optionally provided function called on entry to board_system_reset
+ * It should perform any house keeping prior to the rest.
+ *
+ * status - 1 if resetting to boot loader
+ *          0 if just resetting
+ *
+ ************************************************************************************/
+
+#if defined(BOARD_HAS_NO_RESET) || !defined(BOARD_HAS_ON_RESET)
+#  define board_on_reset(status)
+#else
+__EXPORT void board_on_reset(int status);
+#endif
+
 /************************************************************************************
  * Name: board_reset
  *
diff --git a/src/drivers/boards/common/stm32/board_reset.c b/src/drivers/boards/common/stm32/board_reset.c
index ff8e7df363..efeb1293cc 100644
--- a/src/drivers/boards/common/stm32/board_reset.c
+++ b/src/drivers/boards/common/stm32/board_reset.c
@@ -69,6 +69,9 @@ int board_set_bootload_mode(board_reset_e mode)
 
 void board_system_reset(int status)
 {
+#if defined(BOARD_HAS_ON_RESET)
+	board_on_reset(status);
+#endif
 	board_reset(status);
 
 	while (1);