1/*
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>
20
21#include <asm/smp_plat.h>
22
23#include "common.h"
24#include "platsmp-apmu.h"
25#include "pm-rcar.h"
26#include "rcar-gen2.h"
27#include "r8a7790.h"
28
29static struct rcar_sysc_ch r8a7790_ca15_scu = {
30	.chan_offs = 0x180, /* PWRSR5 .. PWRER5 */
31	.isr_bit = 12, /* CA15-SCU */
32};
33
34static struct rcar_sysc_ch r8a7790_ca7_scu = {
35	.chan_offs = 0x100, /* PWRSR3 .. PWRER3 */
36	.isr_bit = 21, /* CA7-SCU */
37};
38
39static struct rcar_apmu_config r8a7790_apmu_config[] = {
40	{
41		.iomem = DEFINE_RES_MEM(0xe6152000, 0x188),
42		.cpus = { 0, 1, 2, 3 },
43	},
44	{
45		.iomem = DEFINE_RES_MEM(0xe6151000, 0x188),
46		.cpus = { 0x100, 0x0101, 0x102, 0x103 },
47	}
48};
49
50static void __init r8a7790_smp_prepare_cpus(unsigned int max_cpus)
51{
52	/* let APMU code install data related to shmobile_boot_vector */
53	shmobile_smp_apmu_prepare_cpus(max_cpus,
54				       r8a7790_apmu_config,
55				       ARRAY_SIZE(r8a7790_apmu_config));
56
57	/* turn on power to SCU */
58	rcar_gen2_pm_init();
59	rcar_sysc_power_up(&r8a7790_ca15_scu);
60	rcar_sysc_power_up(&r8a7790_ca7_scu);
61}
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
67	.cpu_disable		= shmobile_smp_cpu_disable,
68	.cpu_die		= shmobile_smp_apmu_cpu_die,
69	.cpu_kill		= shmobile_smp_apmu_cpu_kill,
70#endif
71};
72