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/*
* SMP support for r8a7790
*
* Copyright (C) 2012-2013 Renesas Solutions Corp.
* Copyright (C) 2012 Takashi Yoshii <takashi.yoshii.ze@renesas.com>
*
* 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 <linux/soc/renesas/rcar-sysc.h>
#include <asm/smp_plat.h>
#include "common.h"
#include "platsmp-apmu.h"
#include "rcar-gen2.h"
#include "r8a7790.h"
static const struct rcar_sysc_ch r8a7790_ca15_scu = {
.chan_offs = 0x180, /* PWRSR5 .. PWRER5 */
.isr_bit = 12, /* CA15-SCU */
};
static const struct rcar_sysc_ch r8a7790_ca7_scu = {
.chan_offs = 0x100, /* PWRSR3 .. PWRER3 */
.isr_bit = 21, /* CA7-SCU */
};
static struct rcar_apmu_config r8a7790_apmu_config[] = {
{
.iomem = DEFINE_RES_MEM(0xe6152000, 0x188),
.cpus = { 0, 1, 2, 3 },
},
{
.iomem = DEFINE_RES_MEM(0xe6151000, 0x188),
.cpus = { 0x100, 0x0101, 0x102, 0x103 },
}
};
static void __init r8a7790_smp_prepare_cpus(unsigned int max_cpus)
{
/* let APMU code install data related to shmobile_boot_vector */
shmobile_smp_apmu_prepare_cpus(max_cpus,
r8a7790_apmu_config,
ARRAY_SIZE(r8a7790_apmu_config));
/* turn on power to SCU */
rcar_gen2_pm_init();
rcar_sysc_power_up(&r8a7790_ca15_scu);
rcar_sysc_power_up(&r8a7790_ca7_scu);
}
const struct smp_operations r8a7790_smp_ops __initconst = {
.smp_prepare_cpus = r8a7790_smp_prepare_cpus,
.smp_boot_secondary = shmobile_smp_apmu_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
};
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