1 files changed, 31 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/board/w7o/watchdog.c b/qemu/roms/u-boot/board/w7o/watchdog.c
new file mode 100644
index 000000000..ff1b21209
--- /dev/null
+++ b/qemu/roms/u-boot/board/w7o/watchdog.c
@@ -0,0 +1,31 @@
+/*
+ * (C) Copyright 2001
+ * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/*
+ * W7O board level hardware watchdog.
+ */
+#include <common.h>
+#include <config.h>
+
+#ifdef CONFIG_HW_WATCHDOG
+#include <watchdog.h>
+
+void hw_watchdog_reset(void)
+{
+    volatile ushort *hwd = (ushort *)(CONFIG_SYS_W7O_EBC_PB7CR & 0xfff00000);
+
+    /*
+     * Read the LMG's hwd register and toggle the
+     * watchdog bit to reset it.   On the LMC, just
+     * reading it is enough, but toggling the bit
+     * doen't hurt either.
+     */
+    *hwd = *hwd ^ 0x8000;
+
+} /* hw_watchdog_reset() */
+
+#endif /* CONFIG_HW_WATCHDOG */