1 /* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 2006, 07 by Ralf Baechle (ralf@linux-mips.org) 7 * 8 * Symmetric Uniprocessor (TM) Support 9 */ 10 #include <linux/kernel.h> 11 #include <linux/sched.h> 12 13 /* 14 * Send inter-processor interrupt 15 */ 16 static void up_send_ipi_single(int cpu, unsigned int action) 17 { 18 panic(KERN_ERR "%s called", __func__); 19 } 20 21 static inline void up_send_ipi_mask(const struct cpumask *mask, 22 unsigned int action) 23 { 24 panic(KERN_ERR "%s called", __func__); 25 } 26 27 /* 28 * After we've done initial boot, this function is called to allow the 29 * board code to clean up state, if needed 30 */ 31 static void up_init_secondary(void) 32 { 33 } 34 35 static void up_smp_finish(void) 36 { 37 } 38 39 /* 40 * Firmware CPU startup hook 41 */ 42 static void up_boot_secondary(int cpu, struct task_struct *idle) 43 { 44 } 45 46 static void __init up_smp_setup(void) 47 { 48 } 49 50 static void __init up_prepare_cpus(unsigned int max_cpus) 51 { 52 } 53 54 #ifdef CONFIG_HOTPLUG_CPU 55 static int up_cpu_disable(void) 56 { 57 return -ENOSYS; 58 } 59 60 static void up_cpu_die(unsigned int cpu) 61 { 62 BUG(); 63 } 64 #endif 65 66 struct plat_smp_ops up_smp_ops = { 67 .send_ipi_single = up_send_ipi_single, 68 .send_ipi_mask = up_send_ipi_mask, 69 .init_secondary = up_init_secondary, 70 .smp_finish = up_smp_finish, 71 .boot_secondary = up_boot_secondary, 72 .smp_setup = up_smp_setup, 73 .prepare_cpus = up_prepare_cpus, 74 #ifdef CONFIG_HOTPLUG_CPU 75 .cpu_disable = up_cpu_disable, 76 .cpu_die = up_cpu_die, 77 #endif 78 }; 79