1 /*
2 * Keystone SOC SMP platform code
3 *
4 * Copyright 2013 Texas Instruments, Inc.
5 * Cyril Chemparathy <cyril@ti.com>
6 * Santosh Shilimkar <santosh.shillimkar@ti.com>
7 *
8 * Based on platsmp.c, Copyright (C) 2002 ARM Ltd.
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms and conditions of the GNU General Public License,
12 * version 2, as published by the Free Software Foundation.
13 */
14
15 #include <linux/init.h>
16 #include <linux/smp.h>
17 #include <linux/io.h>
18
19 #include <asm/smp_plat.h>
20 #include <asm/prom.h>
21 #include <asm/tlbflush.h>
22 #include <asm/pgtable.h>
23
24 #include "keystone.h"
25
keystone_smp_boot_secondary(unsigned int cpu,struct task_struct * idle)26 static int keystone_smp_boot_secondary(unsigned int cpu,
27 struct task_struct *idle)
28 {
29 unsigned long start = virt_to_idmap(&secondary_startup);
30 int error;
31
32 pr_debug("keystone-smp: booting cpu %d, vector %08lx\n",
33 cpu, start);
34
35 error = keystone_cpu_smc(KEYSTONE_MON_CPU_UP_IDX, cpu, start);
36 if (error)
37 pr_err("CPU %d bringup failed with %d\n", cpu, error);
38
39 return error;
40 }
41
42 const struct smp_operations keystone_smp_ops __initconst = {
43 .smp_boot_secondary = keystone_smp_boot_secondary,
44 };
45