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Diffstat (limited to 'arch/mips/momentum/ocelot_3/reset.c')
-rw-r--r--arch/mips/momentum/ocelot_3/reset.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/arch/mips/momentum/ocelot_3/reset.c b/arch/mips/momentum/ocelot_3/reset.c
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+++ b/arch/mips/momentum/ocelot_3/reset.c
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+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * Copyright (C) 1997, 01, 05 Ralf Baechle
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: jsun@mvista.com or jsun@junsun.net
+ *
+ * Copyright (C) 2002 Momentum Computer Inc.
+ * Author: Matthew Dharm <mdharm@momenco.com>
+ *
+ * Louis Hamilton, Red Hat, Inc.
+ * hamilton@redhat.com [MIPS64 modifications]
+ *
+ * Copyright 2004 PMC-Sierra
+ * Author: Manish Lachwani (lachwani@pmc-sierra.com)
+ *
+ * Copyright (C) 2004 MontaVista Software Inc.
+ * Author: Manish Lachwani, mlachwani@mvista.com
+ */
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/processor.h>
+#include <asm/reboot.h>
+#include <asm/system.h>
+
+void momenco_ocelot_restart(char *command)
+{
+ /* base address of timekeeper portion of part */
+ void *nvram = (void *) 0xfc807000L;
+
+ /* Ask the NVRAM/RTC/watchdog chip to assert reset in 1/16 second */
+ writeb(0x84, nvram + 0xff7);
+
+ /* wait for the watchdog to go off */
+ mdelay(100+(1000/16));
+
+ /* if the watchdog fails for some reason, let people know */
+ printk(KERN_NOTICE "Watchdog reset failed\n");
+}
+
+void momenco_ocelot_halt(void)
+{
+ printk(KERN_NOTICE "\n** You can safely turn off the power\n");
+ while (1)
+ __asm__(".set\tmips3\n\t"
+ "wait\n\t"
+ ".set\tmips0");
+}
+
+void momenco_ocelot_power_off(void)
+{
+ momenco_ocelot_halt();
+}