| Magnus Damm | 1c51ed4 | 2010-12-14 16:56:55 +0900 | [diff] [blame] | 1 | /* |
| 2 | * SMP support for R-Mobile / SH-Mobile |
| 3 | * |
| 4 | * Copyright (C) 2010 Magnus Damm |
| 5 | * |
| 6 | * Based on realview, Copyright (C) 2002 ARM Ltd, All Rights Reserved |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | #include <linux/kernel.h> |
| 13 | #include <linux/errno.h> |
| 14 | #include <linux/smp.h> |
| 15 | |
| 16 | int platform_cpu_kill(unsigned int cpu) |
| 17 | { |
| 18 | return 1; |
| 19 | } |
| 20 | |
| 21 | void platform_cpu_die(unsigned int cpu) |
| 22 | { |
| 23 | while (1) { |
| 24 | /* |
| 25 | * here's the WFI |
| 26 | */ |
| 27 | asm(".word 0xe320f003\n" |
| 28 | : |
| 29 | : |
| 30 | : "memory", "cc"); |
| 31 | } |
| 32 | } |
| 33 | |
| 34 | int platform_cpu_disable(unsigned int cpu) |
| 35 | { |
| 36 | /* |
| 37 | * we don't allow CPU 0 to be shutdown (it is still too special |
| 38 | * e.g. clock tick interrupts) |
| 39 | */ |
| 40 | return cpu == 0 ? -EPERM : 0; |
| 41 | } |