59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
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/*
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* pseries CPU Hotplug infrastructure.
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*
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* Split out from arch/powerpc/kernel/rtas.c
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*
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* Peter Bergner, IBM March 2001.
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* Copyright (C) 2001 IBM.
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*
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* Copyright (C) 2006 Michael Ellerman, IBM Corporation
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/delay.h>
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#include <linux/cpu.h>
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#include <asm/system.h>
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#include <asm/prom.h>
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#include <asm/rtas.h>
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#include <asm/firmware.h>
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#include <asm/machdep.h>
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#include <asm/vdso_datapage.h>
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#include <asm/pSeries_reconfig.h>
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#include "xics.h"
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/* This version can't take the spinlock, because it never returns */
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static struct rtas_args rtas_stop_self_args = {
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.token = RTAS_UNKNOWN_SERVICE,
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.nargs = 0,
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.nret = 1,
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.rets = &rtas_stop_self_args.args[0],
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};
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void rtas_stop_self(void)
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{
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struct rtas_args *args = &rtas_stop_self_args;
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local_irq_disable();
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BUG_ON(args->token == RTAS_UNKNOWN_SERVICE);
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printk("cpu %u (hwid %u) Ready to die...\n",
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smp_processor_id(), hard_smp_processor_id());
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enter_rtas(__pa(args));
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panic("Alas, I survived.\n");
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}
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static int __init pseries_cpu_hotplug_init(void)
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{
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rtas_stop_self_args.token = rtas_token("stop-self");
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return 0;
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}
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arch_initcall(pseries_cpu_hotplug_init);
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