38 lines
726 B
C
38 lines
726 B
C
|
/*
|
||
|
|
* Copyright (C) STMicroelectronics 2009
|
||
|
|
* Copyright (C) ST-Ericsson SA 2010
|
||
|
|
*
|
||
|
|
* License Terms: GNU General Public License v2
|
||
|
|
* Based on ARM realview platform
|
||
|
|
*
|
||
|
|
* Author: Sundar Iyer <sundar.iyer@stericsson.com>
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/errno.h>
|
||
|
|
#include <linux/smp.h>
|
||
|
|
|
||
|
|
#include <asm/smp_plat.h>
|
||
|
|
|
||
|
|
#include "setup.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* platform-specific code to shutdown a CPU
|
||
|
|
*
|
||
|
|
* Called with IRQs disabled
|
||
|
|
*/
|
||
|
|
void ux500_cpu_die(unsigned int cpu)
|
||
|
|
{
|
||
|
|
/* directly enter low power state, skipping secure registers */
|
||
|
|
for (;;) {
|
||
|
|
__asm__ __volatile__("dsb\n\t" "wfi\n\t"
|
||
|
|
: : : "memory");
|
||
|
|
if (pen_release == cpu_logical_map(cpu)) {
|
||
|
|
/*
|
||
|
|
* OK, proper wakeup, we're done
|
||
|
|
*/
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|