Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Keystone SOC SMP platform code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Copyright 2013 Texas Instruments, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *	Cyril Chemparathy <cyril@ti.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *	Santosh Shilimkar <santosh.shillimkar@ti.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  * Based on platsmp.c, Copyright (C) 2002 ARM Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/smp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/pgtable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <asm/smp_plat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <asm/prom.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <asm/tlbflush.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "keystone.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) static int keystone_smp_boot_secondary(unsigned int cpu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 						struct task_struct *idle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	unsigned long start = virt_to_idmap(&secondary_startup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	pr_debug("keystone-smp: booting cpu %d, vector %08lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		 cpu, start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	error = keystone_cpu_smc(KEYSTONE_MON_CPU_UP_IDX, cpu, start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 		pr_err("CPU %d bringup failed with %d\n", cpu, error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) const struct smp_operations keystone_smp_ops __initconst = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	.smp_boot_secondary	= keystone_smp_boot_secondary,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) };