mirror of
https://github.com/torvalds/linux.git
synced 2024-12-23 11:21:33 +00:00
64fc2a947a
All low-level PM/SMP code using virt_to_phys() should actually use __pa_symbol() against kernel symbols. Update code where relevant to move away from virt_to_phys(). Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Laura Abbott <labbott@redhat.com> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
/*
|
|
* SMP operations for Alpine platform.
|
|
*
|
|
* Copyright (C) 2015 Annapurna Labs Ltd.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#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);
|