2 * Copyright (C) STMicroelectronics 2009
3 * Copyright (C) ST-Ericsson SA 2010
5 * License Terms: GNU General Public License v2
6 * Based on ARM realview platform
8 * Author: Sundar Iyer <sundar.iyer@stericsson.com>
11 #include <linux/kernel.h>
12 #include <linux/errno.h>
13 #include <linux/smp.h>
15 #include <asm/cacheflush.h>
16 #include <asm/smp_plat.h>
18 #include <mach/setup.h>
20 extern volatile int pen_release;
23 * platform-specific code to shutdown a CPU
25 * Called with IRQs disabled
27 void __ref ux500_cpu_die(unsigned int cpu)
31 /* directly enter low power state, skipping secure registers */
33 __asm__ __volatile__("dsb\n\t" "wfi\n\t"
35 if (pen_release == cpu_logical_map(cpu)) {
37 * OK, proper wakeup, we're done