1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Keystone SOC SMP platform code
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright 2013 Texas Instruments, Inc.
6*4882a593Smuzhiyun * Cyril Chemparathy <cyril@ti.com>
7*4882a593Smuzhiyun * Santosh Shilimkar <santosh.shillimkar@ti.com>
8*4882a593Smuzhiyun *
9*4882a593Smuzhiyun * Based on platsmp.c, Copyright (C) 2002 ARM Ltd.
10*4882a593Smuzhiyun */
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include <linux/init.h>
13*4882a593Smuzhiyun #include <linux/smp.h>
14*4882a593Smuzhiyun #include <linux/io.h>
15*4882a593Smuzhiyun #include <linux/pgtable.h>
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun #include <asm/smp_plat.h>
18*4882a593Smuzhiyun #include <asm/prom.h>
19*4882a593Smuzhiyun #include <asm/tlbflush.h>
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun #include "keystone.h"
22*4882a593Smuzhiyun
keystone_smp_boot_secondary(unsigned int cpu,struct task_struct * idle)23*4882a593Smuzhiyun static int keystone_smp_boot_secondary(unsigned int cpu,
24*4882a593Smuzhiyun struct task_struct *idle)
25*4882a593Smuzhiyun {
26*4882a593Smuzhiyun unsigned long start = virt_to_idmap(&secondary_startup);
27*4882a593Smuzhiyun int error;
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun pr_debug("keystone-smp: booting cpu %d, vector %08lx\n",
30*4882a593Smuzhiyun cpu, start);
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun error = keystone_cpu_smc(KEYSTONE_MON_CPU_UP_IDX, cpu, start);
33*4882a593Smuzhiyun if (error)
34*4882a593Smuzhiyun pr_err("CPU %d bringup failed with %d\n", cpu, error);
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun return error;
37*4882a593Smuzhiyun }
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun const struct smp_operations keystone_smp_ops __initconst = {
40*4882a593Smuzhiyun .smp_boot_secondary = keystone_smp_boot_secondary,
41*4882a593Smuzhiyun };
42