Commit | Line | Data |
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ad09cb83 MD |
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> | |
fccae893 | 20 | |
ad09cb83 | 21 | #include <asm/smp_plat.h> |
fccae893 | 22 | |
fd44aa5e | 23 | #include "common.h" |
a8d2ff39 | 24 | #include "platsmp-apmu.h" |
585c09df | 25 | #include "pm-rcar.h" |
a8caad66 | 26 | #include "rcar-gen2.h" |
fccae893 | 27 | #include "r8a7790.h" |
ad09cb83 | 28 | |
bd82aff9 | 29 | static const struct rcar_sysc_ch r8a7790_ca15_scu = { |
c2c97ec5 KK |
30 | .chan_offs = 0x180, /* PWRSR5 .. PWRER5 */ |
31 | .isr_bit = 12, /* CA15-SCU */ | |
32 | }; | |
33 | ||
bd82aff9 | 34 | static const struct rcar_sysc_ch r8a7790_ca7_scu = { |
0445ded6 GI |
35 | .chan_offs = 0x100, /* PWRSR3 .. PWRER3 */ |
36 | .isr_bit = 21, /* CA7-SCU */ | |
37 | }; | |
38 | ||
a8d2ff39 HN |
39 | static struct rcar_apmu_config r8a7790_apmu_config[] = { |
40 | { | |
1d66f72d | 41 | .iomem = DEFINE_RES_MEM(0xe6152000, 0x188), |
a8d2ff39 HN |
42 | .cpus = { 0, 1, 2, 3 }, |
43 | }, | |
44 | { | |
1d66f72d | 45 | .iomem = DEFINE_RES_MEM(0xe6151000, 0x188), |
a8d2ff39 HN |
46 | .cpus = { 0x100, 0x0101, 0x102, 0x103 }, |
47 | } | |
48 | }; | |
49 | ||
ad09cb83 MD |
50 | static void __init r8a7790_smp_prepare_cpus(unsigned int max_cpus) |
51 | { | |
ad09cb83 | 52 | /* let APMU code install data related to shmobile_boot_vector */ |
a8d2ff39 HN |
53 | shmobile_smp_apmu_prepare_cpus(max_cpus, |
54 | r8a7790_apmu_config, | |
55 | ARRAY_SIZE(r8a7790_apmu_config)); | |
ad09cb83 | 56 | |
0445ded6 | 57 | /* turn on power to SCU */ |
a8caad66 | 58 | rcar_gen2_pm_init(); |
c2c97ec5 | 59 | rcar_sysc_power_up(&r8a7790_ca15_scu); |
0445ded6 | 60 | rcar_sysc_power_up(&r8a7790_ca7_scu); |
ad09cb83 MD |
61 | } |
62 | ||
63 | struct 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 | |
787047ee | 67 | .cpu_can_disable = shmobile_smp_cpu_can_disable, |
ad09cb83 MD |
68 | .cpu_die = shmobile_smp_apmu_cpu_die, |
69 | .cpu_kill = shmobile_smp_apmu_cpu_kill, | |
70 | #endif | |
71 | }; |