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57 lines
963 B
57 lines
963 B
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* The idle loop for all SuperH platforms. |
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* |
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* Copyright (C) 2002 - 2009 Paul Mundt |
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*/ |
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/mm.h> |
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#include <linux/pm.h> |
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#include <linux/tick.h> |
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#include <linux/preempt.h> |
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#include <linux/thread_info.h> |
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#include <linux/irqflags.h> |
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#include <linux/smp.h> |
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#include <linux/atomic.h> |
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#include <asm/smp.h> |
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#include <asm/bl_bit.h> |
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static void (*sh_idle)(void); |
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void default_idle(void) |
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{ |
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set_bl_bit(); |
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raw_local_irq_enable(); |
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/* Isn't this racy ? */ |
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cpu_sleep(); |
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clear_bl_bit(); |
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} |
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void arch_cpu_idle_dead(void) |
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{ |
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play_dead(); |
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} |
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void arch_cpu_idle(void) |
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{ |
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sh_idle(); |
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} |
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void __init select_idle_routine(void) |
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{ |
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/* |
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* If a platform has set its own idle routine, leave it alone. |
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*/ |
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if (!sh_idle) |
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sh_idle = default_idle; |
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} |
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void stop_this_cpu(void *unused) |
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{ |
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local_irq_disable(); |
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set_cpu_online(smp_processor_id(), false); |
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for (;;) |
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cpu_sleep(); |
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}
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