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Magnus Dammad09cb82013-08-29 08:22:07 +09001/*
2 * SMP support for r8a7790
3 *
4 * Copyright (C) 2012-2013 Renesas Solutions Corp.
5 * Copyright (C) 2012 Takashi Yoshii <takashi.yoshii.ze@renesas.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 */
16#include <linux/kernel.h>
17#include <linux/init.h>
18#include <linux/smp.h>
19#include <linux/io.h>
Geert Uytterhoevenfccae892014-06-20 18:53:06 +020020
Magnus Dammad09cb82013-08-29 08:22:07 +090021#include <asm/smp_plat.h>
Geert Uytterhoevenfccae892014-06-20 18:53:06 +020022
Magnus Dammfd44aa52014-06-17 16:47:37 +090023#include "common.h"
Hisashi Nakamuraa8d2ff32014-10-24 17:33:08 +090024#include "platsmp-apmu.h"
Magnus Damm585c09d2014-06-17 16:47:53 +090025#include "pm-rcar.h"
Gaku Inamia8caad62015-03-16 14:48:43 +090026#include "rcar-gen2.h"
Geert Uytterhoevenfccae892014-06-20 18:53:06 +020027#include "r8a7790.h"
Magnus Dammad09cb82013-08-29 08:22:07 +090028
Geert Uytterhoevenbd82aff2015-06-04 20:22:35 +020029static const struct rcar_sysc_ch r8a7790_ca15_scu = {
Keita Kobayashic2c97ec2014-01-15 21:26:13 +090030 .chan_offs = 0x180, /* PWRSR5 .. PWRER5 */
31 .isr_bit = 12, /* CA15-SCU */
32};
33
Geert Uytterhoevenbd82aff2015-06-04 20:22:35 +020034static const struct rcar_sysc_ch r8a7790_ca7_scu = {
Gaku Inami0445ded2014-01-15 21:26:04 +090035 .chan_offs = 0x100, /* PWRSR3 .. PWRER3 */
36 .isr_bit = 21, /* CA7-SCU */
37};
38
Hisashi Nakamuraa8d2ff32014-10-24 17:33:08 +090039static struct rcar_apmu_config r8a7790_apmu_config[] = {
40 {
Wolfram Sang1d66f722015-02-03 15:57:41 +010041 .iomem = DEFINE_RES_MEM(0xe6152000, 0x188),
Hisashi Nakamuraa8d2ff32014-10-24 17:33:08 +090042 .cpus = { 0, 1, 2, 3 },
43 },
44 {
Wolfram Sang1d66f722015-02-03 15:57:41 +010045 .iomem = DEFINE_RES_MEM(0xe6151000, 0x188),
Hisashi Nakamuraa8d2ff32014-10-24 17:33:08 +090046 .cpus = { 0x100, 0x0101, 0x102, 0x103 },
47 }
48};
49
Magnus Dammad09cb82013-08-29 08:22:07 +090050static void __init r8a7790_smp_prepare_cpus(unsigned int max_cpus)
51{
Magnus Dammad09cb82013-08-29 08:22:07 +090052 /* let APMU code install data related to shmobile_boot_vector */
Hisashi Nakamuraa8d2ff32014-10-24 17:33:08 +090053 shmobile_smp_apmu_prepare_cpus(max_cpus,
54 r8a7790_apmu_config,
55 ARRAY_SIZE(r8a7790_apmu_config));
Magnus Dammad09cb82013-08-29 08:22:07 +090056
Gaku Inami0445ded2014-01-15 21:26:04 +090057 /* turn on power to SCU */
Gaku Inamia8caad62015-03-16 14:48:43 +090058 rcar_gen2_pm_init();
Keita Kobayashic2c97ec2014-01-15 21:26:13 +090059 rcar_sysc_power_up(&r8a7790_ca15_scu);
Gaku Inami0445ded2014-01-15 21:26:04 +090060 rcar_sysc_power_up(&r8a7790_ca7_scu);
Magnus Dammad09cb82013-08-29 08:22:07 +090061}
62
63struct smp_operations r8a7790_smp_ops __initdata = {
64 .smp_prepare_cpus = r8a7790_smp_prepare_cpus,
65 .smp_boot_secondary = shmobile_smp_apmu_boot_secondary,
66#ifdef CONFIG_HOTPLUG_CPU
Stephen Boyd787047e2015-07-29 00:34:48 +010067 .cpu_can_disable = shmobile_smp_cpu_can_disable,
Magnus Dammad09cb82013-08-29 08:22:07 +090068 .cpu_die = shmobile_smp_apmu_cpu_die,
69 .cpu_kill = shmobile_smp_apmu_cpu_kill,
70#endif
71};