diff options
Diffstat (limited to 'arch/mips/momentum/ocelot_c/reset.c')
| -rw-r--r-- | arch/mips/momentum/ocelot_c/reset.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/arch/mips/momentum/ocelot_c/reset.c b/arch/mips/momentum/ocelot_c/reset.c new file mode 100644 index 00000000000..1f2b4263cc8 --- /dev/null +++ b/arch/mips/momentum/ocelot_c/reset.c @@ -0,0 +1,59 @@ +/* + * 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_ocelot_restart(char *command) +{ + /* base address of timekeeper portion of part */ + void *nvram = (void *) +#ifdef CONFIG_MIPS64 + 0xfffffffffc807000; +#else + 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_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(); +} |