| /* |
| * SMP support for R-Mobile / SH-Mobile |
| * |
| * Copyright (C) 2010 Magnus Damm |
| * Copyright (C) 2011 Paul Mundt |
| * |
| * Based on vexpress, Copyright (C) 2002 ARM Ltd, All Rights Reserved |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| #include <linux/init.h> |
| #include <asm/cacheflush.h> |
| #include <asm/smp_plat.h> |
| #include "common.h" |
| |
| extern unsigned long shmobile_smp_fn[]; |
| extern unsigned long shmobile_smp_arg[]; |
| extern unsigned long shmobile_smp_mpidr[]; |
| |
| void shmobile_smp_hook(unsigned int cpu, unsigned long fn, unsigned long arg) |
| { |
| shmobile_smp_fn[cpu] = 0; |
| flush_cache_all(); |
| |
| shmobile_smp_mpidr[cpu] = cpu_logical_map(cpu); |
| shmobile_smp_fn[cpu] = fn; |
| shmobile_smp_arg[cpu] = arg; |
| flush_cache_all(); |
| } |
| |
| #ifdef CONFIG_HOTPLUG_CPU |
| bool shmobile_smp_cpu_can_disable(unsigned int cpu) |
| { |
| return true; /* Hotplug of any CPU is supported */ |
| } |
| #endif |
| |
| bool __init shmobile_smp_init_fallback_ops(void) |
| { |
| /* fallback on PSCI/smp_ops if no other DT based method is detected */ |
| if (!IS_ENABLED(CONFIG_SMP)) |
| return false; |
| |
| return platform_can_secondary_boot() ? true : false; |
| } |
