1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Keystone SOC SMP platform code
4 *
5 * Copyright 2013 Texas Instruments, Inc.
6 * Cyril Chemparathy <cyril@ti.com>
7 * Santosh Shilimkar <santosh.shillimkar@ti.com>
8 *
9 * Based on platsmp.c, Copyright (C) 2002 ARM Ltd.
10 */
11
12 #include <linux/init.h>
13 #include <linux/smp.h>
14 #include <linux/io.h>
15 #include <linux/pgtable.h>
16
17 #include <asm/smp_plat.h>
18 #include <asm/prom.h>
19 #include <asm/tlbflush.h>
20
21 #include "keystone.h"
22
keystone_smp_boot_secondary(unsigned int cpu,struct task_struct * idle)23 static int keystone_smp_boot_secondary(unsigned int cpu,
24 struct task_struct *idle)
25 {
26 unsigned long start = virt_to_idmap(&secondary_startup);
27 int error;
28
29 pr_debug("keystone-smp: booting cpu %d, vector %08lx\n",
30 cpu, start);
31
32 error = keystone_cpu_smc(KEYSTONE_MON_CPU_UP_IDX, cpu, start);
33 if (error)
34 pr_err("CPU %d bringup failed with %d\n", cpu, error);
35
36 return error;
37 }
38
39 const struct smp_operations keystone_smp_ops __initconst = {
40 .smp_boot_secondary = keystone_smp_boot_secondary,
41 };
42