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Diffstat (limited to 'arch/mips/momentum/jaguar_atx/reset.c')
-rw-r--r--arch/mips/momentum/jaguar_atx/reset.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/arch/mips/momentum/jaguar_atx/reset.c b/arch/mips/momentum/jaguar_atx/reset.c
new file mode 100644
index 000000000000..48039484cdf9
--- /dev/null
+++ b/arch/mips/momentum/jaguar_atx/reset.c
@@ -0,0 +1,57 @@
+/*
+ * 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, 2001 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]
+ */
+#include <linux/config.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/processor.h>
+#include <asm/reboot.h>
+#include <asm/system.h>
+#include <linux/delay.h>
+
+void momenco_jaguar_restart(char *command)
+{
+ /* base address of timekeeper portion of part */
+#ifdef CONFIG_MIPS64
+ void *nvram = (void*) 0xfffffffffc807000;
+#else
+ void *nvram = (void*) 0xfc807000;
+#endif
+ /* 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_jaguar_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_jaguar_power_off(void)
+{
+ momenco_jaguar_halt();
+}