| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 1 | /* |
| 2 | * SMP support for R-Mobile / SH-Mobile |
| 3 | * |
| 4 | * Copyright (C) 2010 Magnus Damm |
| 5 | * Copyright (C) 2011 Paul Mundt |
| 6 | * |
| 7 | * Based on vexpress, Copyright (C) 2002 ARM Ltd, All Rights Reserved |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License version 2 as |
| 11 | * published by the Free Software Foundation. |
| 12 | */ |
| 13 | #include <linux/init.h> |
| 14 | #include <asm/cacheflush.h> |
| 15 | #include <asm/smp_plat.h> |
| 16 | #include "common.h" |
| 17 | |
| 18 | extern unsigned long shmobile_smp_fn[]; |
| 19 | extern unsigned long shmobile_smp_arg[]; |
| 20 | extern unsigned long shmobile_smp_mpidr[]; |
| 21 | |
| 22 | void shmobile_smp_hook(unsigned int cpu, unsigned long fn, unsigned long arg) |
| 23 | { |
| 24 | shmobile_smp_fn[cpu] = 0; |
| 25 | flush_cache_all(); |
| 26 | |
| 27 | shmobile_smp_mpidr[cpu] = cpu_logical_map(cpu); |
| 28 | shmobile_smp_fn[cpu] = fn; |
| 29 | shmobile_smp_arg[cpu] = arg; |
| 30 | flush_cache_all(); |
| 31 | } |
| 32 | |
| 33 | #ifdef CONFIG_HOTPLUG_CPU |
| 34 | bool shmobile_smp_cpu_can_disable(unsigned int cpu) |
| 35 | { |
| 36 | return true; /* Hotplug of any CPU is supported */ |
| 37 | } |
| 38 | #endif |