https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: 1f93e4a96c9109378204c147b3eec0d0e8100fde authored by Linus Torvalds on 20 September 2015, 21:32:34 UTC
Linux 4.3-rc2
Linux 4.3-rc2
Tip revision: 1f93e4a
smp-r8a7791.c
/*
* SMP support for r8a7791
*
* Copyright (C) 2013 Renesas Solutions Corp.
* Copyright (C) 2013 Magnus Damm
*
* 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; version 2 of the License.
*
* 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/kernel.h>
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/io.h>
#include <asm/smp_plat.h>
#include "common.h"
#include "platsmp-apmu.h"
#include "r8a7791.h"
#include "rcar-gen2.h"
static struct rcar_apmu_config r8a7791_apmu_config[] = {
{
.iomem = DEFINE_RES_MEM(0xe6152000, 0x188),
.cpus = { 0, 1 },
}
};
static void __init r8a7791_smp_prepare_cpus(unsigned int max_cpus)
{
/* let APMU code install data related to shmobile_boot_vector */
shmobile_smp_apmu_prepare_cpus(max_cpus,
r8a7791_apmu_config,
ARRAY_SIZE(r8a7791_apmu_config));
rcar_gen2_pm_init();
}
static int r8a7791_smp_boot_secondary(unsigned int cpu,
struct task_struct *idle)
{
/* Error out when hardware debug mode is enabled */
if (rcar_gen2_read_mode_pins() & BIT(21)) {
pr_warn("Unable to boot CPU%u when MD21 is set\n", cpu);
return -ENOTSUPP;
}
return shmobile_smp_apmu_boot_secondary(cpu, idle);
}
struct smp_operations r8a7791_smp_ops __initdata = {
.smp_prepare_cpus = r8a7791_smp_prepare_cpus,
.smp_boot_secondary = r8a7791_smp_boot_secondary,
#ifdef CONFIG_HOTPLUG_CPU
.cpu_can_disable = shmobile_smp_cpu_can_disable,
.cpu_die = shmobile_smp_apmu_cpu_die,
.cpu_kill = shmobile_smp_apmu_cpu_kill,
#endif
};