1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * SMP support for R-Mobile / SH-Mobile 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 2010 Magnus Damm 6*4882a593Smuzhiyun * Copyright (C) 2011 Paul Mundt 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun * Based on vexpress, Copyright (C) 2002 ARM Ltd, All Rights Reserved 9*4882a593Smuzhiyun */ 10*4882a593Smuzhiyun #include <linux/init.h> 11*4882a593Smuzhiyun #include <asm/cacheflush.h> 12*4882a593Smuzhiyun #include <asm/smp_plat.h> 13*4882a593Smuzhiyun #include "common.h" 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun extern unsigned long shmobile_smp_fn[]; 16*4882a593Smuzhiyun extern unsigned long shmobile_smp_arg[]; 17*4882a593Smuzhiyun extern unsigned long shmobile_smp_mpidr[]; 18*4882a593Smuzhiyun shmobile_smp_hook(unsigned int cpu,unsigned long fn,unsigned long arg)19*4882a593Smuzhiyunvoid shmobile_smp_hook(unsigned int cpu, unsigned long fn, unsigned long arg) 20*4882a593Smuzhiyun { 21*4882a593Smuzhiyun shmobile_smp_fn[cpu] = 0; 22*4882a593Smuzhiyun flush_cache_all(); 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun shmobile_smp_mpidr[cpu] = cpu_logical_map(cpu); 25*4882a593Smuzhiyun shmobile_smp_fn[cpu] = fn; 26*4882a593Smuzhiyun shmobile_smp_arg[cpu] = arg; 27*4882a593Smuzhiyun flush_cache_all(); 28*4882a593Smuzhiyun } 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun #ifdef CONFIG_HOTPLUG_CPU shmobile_smp_cpu_can_disable(unsigned int cpu)31*4882a593Smuzhiyunbool shmobile_smp_cpu_can_disable(unsigned int cpu) 32*4882a593Smuzhiyun { 33*4882a593Smuzhiyun return true; /* Hotplug of any CPU is supported */ 34*4882a593Smuzhiyun } 35*4882a593Smuzhiyun #endif 36