| /* |
| * 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/cacheflush.h> |
| #include <asm/smp_plat.h> |
| |
| #include <mach/setup.h> |
| |
| /* |
| * platform-specific code to shutdown a CPU |
| * |
| * Called with IRQs disabled |
| */ |
| void __ref ux500_cpu_die(unsigned int cpu) |
| { |
| flush_cache_all(); |
| |
| /* 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; |
| } |
| } |
| } |
