diff options
Diffstat (limited to 'arch/mips/momentum/ocelot_g/reset.c')
| -rw-r--r-- | arch/mips/momentum/ocelot_g/reset.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/mips/momentum/ocelot_g/reset.c b/arch/mips/momentum/ocelot_g/reset.c new file mode 100644 index 000000000000..3fd499adf4cf --- /dev/null +++ b/arch/mips/momentum/ocelot_g/reset.c @@ -0,0 +1,47 @@ +/* + * 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 + */ +#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) +{ + void *nvram = ioremap_nocache(0x2c807000, 0x1000); + + if (!nvram) { + printk(KERN_NOTICE "ioremap of reset register failed\n"); + return; + } + writeb(0x84, nvram + 0xff7); /* Ask the NVRAM/RTC/watchdog chip to + assert reset in 1/16 second */ + mdelay(10+(1000/16)); + iounmap(nvram); + 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(); +} |