board/BuR/common: add br resetcontoller implementation
On many B&R boards we have a reset-controller, responsible for very
early board-bringup (voltages, clocks, ...) and bootmode selection.
To be ready for adding more B&R boards to source tree while avoiding
duplicate code, we add the resetcontroller implementation to the common
part of B&R boards.
Signed-off-by: Hannes Schmelzer <hannes.schmelzer@br-automation.com>
diff --git a/board/BuR/common/br_resetc.h b/board/BuR/common/br_resetc.h
new file mode 100644
index 0000000..ba0689b
--- /dev/null
+++ b/board/BuR/common/br_resetc.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * common reset-controller functions for B&R boards
+ *
+ * Copyright (C) 2019 Hannes Schmelzer <oe5hpm@oevsv.at>
+ * B&R Industrial Automation GmbH - http://www.br-automation.com/ *
+ */
+#ifndef __CONFIG_BRRESETC_H__
+#define __CONFIG_BRRESETC_H__
+#include <common.h>
+
+int br_resetc_regget(u8 reg, u8 *dst);
+int br_resetc_regset(u8 reg, u8 val);
+int br_resetc_bmode(void);
+
+/* reset controller register defines */
+#define RSTCTRL_CTRLREG 0x01
+#define RSTCTRL_SCRATCHREG0 0x04
+#define RSTCTRL_ENHSTATUS 0x07
+#define RSTCTRL_SCRATCHREG1 0x08
+#define RSTCTRL_RSTCAUSE 0x00
+#define RSTCTRL_ERSTCAUSE 0x09
+#define RSTCTRL_SPECGPIO_I 0x0A
+#define RSTCTRL_SPECGPIO_O 0x0B
+
+#endif /* __CONFIG_BRRESETC_H__ */