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 int up_boot_secondary(int cpu, struct task_struct *idle)
43 {
44 return 0;
45 }
46
47 static void __init up_smp_setup(void)
48 {
49 }
50
51 static void __init up_prepare_cpus(unsigned int max_cpus)
52 {
53 }
54
55 #ifdef CONFIG_HOTPLUG_CPU
56 static int up_cpu_disable(void)
57 {
58 return -ENOSYS;
59 }
60
61 static void up_cpu_die(unsigned int cpu)
62 {
63 BUG();
64 }
65 #endif
66
67 const struct plat_smp_ops up_smp_ops = {
68 .send_ipi_single = up_send_ipi_single,
69 .send_ipi_mask = up_send_ipi_mask,
70 .init_secondary = up_init_secondary,
71 .smp_finish = up_smp_finish,
72 .boot_secondary = up_boot_secondary,
73 .smp_setup = up_smp_setup,
74 .prepare_cpus = up_prepare_cpus,
75 #ifdef CONFIG_HOTPLUG_CPU
76 .cpu_disable = up_cpu_disable,
77 .cpu_die = up_cpu_die,
78 #endif
79 };
80
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