1 files changed, 27 insertions, 0 deletions
diff --git a/board/renesas/common/rza1-common.c b/board/renesas/common/rza1-common.c
new file mode 100644
index 00000000000..5027319a58a
--- /dev/null
+++ b/board/renesas/common/rza1-common.c
@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2017 Renesas Electronics
+ * Copyright (C) Chris Brandt
+ */
+
+#include <init.h>
+#include <asm/io.h>
+
+#define RZA1_WDT_BASE	0xfcfe0000
+#define WTCSR		0x00
+#define WTCNT		0x02
+#define WRCSR		0x04
+
+void __weak reset_cpu(void)
+{
+	/* Dummy read (must read WRCSR:WOVF at least once before clearing) */
+	readb(RZA1_WDT_BASE + WRCSR);
+
+	writew(0xa500, RZA1_WDT_BASE + WRCSR);
+	writew(0x5a5f, RZA1_WDT_BASE + WRCSR);
+	writew(0x5a00, RZA1_WDT_BASE + WTCNT);
+	writew(0xa578, RZA1_WDT_BASE + WTCSR);
+
+	for (;;)
+		asm volatile("wfi");
+}