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hotplug.c

/*
 * SMP support for R-Mobile / SH-Mobile
 *
 * Copyright (C) 2010  Magnus Damm
 *
 * Based on realview, Copyright (C) 2002 ARM Ltd, All Rights Reserved
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/smp.h>

int platform_cpu_kill(unsigned int cpu)
{
      return 1;
}

void platform_cpu_die(unsigned int cpu)
{
      while (1) {
            /*
             * here's the WFI
             */
            asm(".word  0xe320f003\n"
                :
                :
                : "memory", "cc");
      }
}

int platform_cpu_disable(unsigned int cpu)
{
      /*
       * we don't allow CPU 0 to be shutdown (it is still too special
       * e.g. clock tick interrupts)
       */
      return cpu == 0 ? -EPERM : 0;
}

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