Release 4.11 arch/arm/mach-prima2/hotplug.c

/*
 * CPU hotplug support for CSR Marco dual-core SMP SoCs
 *
 * Copyright (c) 2012 Cambridge Silicon Radio Limited, a CSR plc group company.
 *
 * Licensed under GPLv2 or later.
 */

#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/smp.h>

#include <asm/smp_plat.h>



static inline void platform_do_lowpower(unsigned int cpu)
{
	/* we put the platform to just WFI */
	for (;;) {
		__asm__ __volatile__("dsb\n\t" "wfi\n\t"
                        : : : "memory");
		if (pen_release == cpu_logical_map(cpu)) {
			/*
                         * OK, proper wakeup, we're done
                         */
			break;
		}
	}
}

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/*
 * platform-specific code to shutdown a CPU
 *
 * Called with IRQs disabled
 */


void sirfsoc_cpu_die(unsigned int cpu)
{
	platform_do_lowpower(cpu);
}
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Directory: arch/arm/mach-prima2

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