56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/*
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* MPC85xx generic code.
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*
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* Maintained by Kumar Gala (see MAINTAINERS for contact information)
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*
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* Copyright 2005 Freescale Semiconductor Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/irq.h>
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#include <linux/module.h>
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#include <asm/irq.h>
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#include <asm/io.h>
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#include <asm/prom.h>
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#include <sysdev/fsl_soc.h>
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static __be32 __iomem *rstcr;
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extern void abort(void);
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static int __init mpc85xx_rstcr(void)
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{
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struct device_node *np;
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np = of_find_node_by_name(NULL, "global-utilities");
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if ((np && of_get_property(np, "fsl,has-rstcr", NULL))) {
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const u32 *prop = of_get_property(np, "reg", NULL);
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if (prop) {
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/* map reset control register
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* 0xE00B0 is offset of reset control register
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*/
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rstcr = ioremap(get_immrbase() + *prop + 0xB0, 0xff);
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if (!rstcr)
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printk (KERN_EMERG "Error: reset control "
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"register not mapped!\n");
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}
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} else
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printk (KERN_INFO "rstcr compatible register does not exist!\n");
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if (np)
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of_node_put(np);
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return 0;
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}
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arch_initcall(mpc85xx_rstcr);
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void mpc85xx_restart(char *cmd)
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{
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local_irq_disable();
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if (rstcr)
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/* set reset control register */
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out_be32(rstcr, 0x2); /* HRESET_REQ */
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abort();
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}
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