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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* SMP operations for Alpine platform.
*
* Copyright (C) 2015 Annapurna Labs Ltd.
*/
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/io.h>
#include <linux/of.h>
#include <asm/smp_plat.h>
#include "alpine_cpu_pm.h"
static int alpine_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
phys_addr_t addr;
addr = __pa_symbol(secondary_startup);
if (addr > (phys_addr_t)(uint32_t)(-1)) {
pr_err("FAIL: resume address over 32bit (%pa)", &addr);
return -EINVAL;
}
return alpine_cpu_wakeup(cpu_logical_map(cpu), (uint32_t)addr);
}
static void __init alpine_smp_prepare_cpus(unsigned int max_cpus)
{
alpine_cpu_pm_init();
}
static const struct smp_operations alpine_smp_ops __initconst = {
.smp_prepare_cpus = alpine_smp_prepare_cpus,
.smp_boot_secondary = alpine_boot_secondary,
};
CPU_METHOD_OF_DECLARE(alpine_smp, "al,alpine-smp", &alpine_smp_ops);
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