1*c942fddfSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later 2e9e06f28STsahee Zidenberg /* 3e9e06f28STsahee Zidenberg * SMP operations for Alpine platform. 4e9e06f28STsahee Zidenberg * 5e9e06f28STsahee Zidenberg * Copyright (C) 2015 Annapurna Labs Ltd. 6e9e06f28STsahee Zidenberg */ 7e9e06f28STsahee Zidenberg 8e9e06f28STsahee Zidenberg #include <linux/init.h> 9e9e06f28STsahee Zidenberg #include <linux/errno.h> 10e9e06f28STsahee Zidenberg #include <linux/io.h> 11e9e06f28STsahee Zidenberg #include <linux/of.h> 12e9e06f28STsahee Zidenberg 13e9e06f28STsahee Zidenberg #include <asm/smp_plat.h> 14e9e06f28STsahee Zidenberg 15e9e06f28STsahee Zidenberg #include "alpine_cpu_pm.h" 16e9e06f28STsahee Zidenberg alpine_boot_secondary(unsigned int cpu,struct task_struct * idle)17e9e06f28STsahee Zidenbergstatic int alpine_boot_secondary(unsigned int cpu, struct task_struct *idle) 18e9e06f28STsahee Zidenberg { 19e9e06f28STsahee Zidenberg phys_addr_t addr; 20e9e06f28STsahee Zidenberg 2164fc2a94SFlorian Fainelli addr = __pa_symbol(secondary_startup); 22e9e06f28STsahee Zidenberg 23e9e06f28STsahee Zidenberg if (addr > (phys_addr_t)(uint32_t)(-1)) { 24e9e06f28STsahee Zidenberg pr_err("FAIL: resume address over 32bit (%pa)", &addr); 25e9e06f28STsahee Zidenberg return -EINVAL; 26e9e06f28STsahee Zidenberg } 27e9e06f28STsahee Zidenberg 28e9e06f28STsahee Zidenberg return alpine_cpu_wakeup(cpu_logical_map(cpu), (uint32_t)addr); 29e9e06f28STsahee Zidenberg } 30e9e06f28STsahee Zidenberg alpine_smp_prepare_cpus(unsigned int max_cpus)31e9e06f28STsahee Zidenbergstatic void __init alpine_smp_prepare_cpus(unsigned int max_cpus) 32e9e06f28STsahee Zidenberg { 33e9e06f28STsahee Zidenberg alpine_cpu_pm_init(); 34e9e06f28STsahee Zidenberg } 35e9e06f28STsahee Zidenberg 3675305275SMasahiro Yamada static const struct smp_operations alpine_smp_ops __initconst = { 37e9e06f28STsahee Zidenberg .smp_prepare_cpus = alpine_smp_prepare_cpus, 38e9e06f28STsahee Zidenberg .smp_boot_secondary = alpine_boot_secondary, 39e9e06f28STsahee Zidenberg }; 40e9e06f28STsahee Zidenberg CPU_METHOD_OF_DECLARE(alpine_smp, "al,alpine-smp", &alpine_smp_ops); 41