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/*
* MPC85xx generic code.
*
* Maintained by Kumar Gala (see MAINTAINERS for contact information)
*
* Copyright 2005 Freescale Semiconductor Inc.
*
* 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.
*/
#include <linux/irq.h>
#include <linux/module.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <sysdev/fsl_soc.h>
static __be32 __iomem *rstcr;
extern void abort(void);
static int __init mpc85xx_rstcr(void)
{
struct device_node *np;
np = of_find_node_by_name(NULL, "global-utilities");
if ((np && of_get_property(np, "fsl,has-rstcr", NULL))) {
const u32 *prop = of_get_property(np, "reg", NULL);
if (prop) {
/* map reset control register
* 0xE00B0 is offset of reset control register
*/
rstcr = ioremap(get_immrbase() + *prop + 0xB0, 0xff);
if (!rstcr)
printk (KERN_EMERG "Error: reset control "
"register not mapped!\n");
}
} else
printk (KERN_INFO "rstcr compatible register does not exist!\n");
if (np)
of_node_put(np);
return 0;
}
arch_initcall(mpc85xx_rstcr);
void mpc85xx_restart(char *cmd)
{
local_irq_disable();
if (rstcr)
/* set reset control register */
out_be32(rstcr, 0x2); /* HRESET_REQ */
abort();
}
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