projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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" |
| fccae893 | 26 | #include "r8a7790.h" |
| ad09cb83 | 27 | |
| c2c97ec5 KK |
28 | static struct rcar_sysc_ch r8a7790_ca15_scu = { |
| 29 | .chan_offs = 0x180, /* PWRSR5 .. PWRER5 */ | |
| 30 | .isr_bit = 12, /* CA15-SCU */ | |
| 31 | }; | |
| 32 | ||
| 0445ded6 GI |
33 | static struct rcar_sysc_ch r8a7790_ca7_scu = { |
| 34 | .chan_offs = 0x100, /* PWRSR3 .. PWRER3 */ | |
| 35 | .isr_bit = 21, /* CA7-SCU */ | |
| 36 | }; | |
| 37 | ||
| a8d2ff39 HN |
38 | static struct rcar_apmu_config r8a7790_apmu_config[] = { |
| 39 | { | |
| 40 | .iomem = DEFINE_RES_MEM(0xe6152000, 0x88), | |
| 41 | .cpus = { 0, 1, 2, 3 }, | |
| 42 | }, | |
| 43 | { | |
| 44 | .iomem = DEFINE_RES_MEM(0xe6151000, 0x88), | |
| 45 | .cpus = { 0x100, 0x0101, 0x102, 0x103 }, | |
| 46 | } | |
| 47 | }; | |
| 48 | ||
| ad09cb83 MD |
49 | static void __init r8a7790_smp_prepare_cpus(unsigned int max_cpus) |
| 50 | { | |
| ad09cb83 | 51 | /* let APMU code install data related to shmobile_boot_vector */ |
| a8d2ff39 HN |
52 | shmobile_smp_apmu_prepare_cpus(max_cpus, |
| 53 | r8a7790_apmu_config, | |
| 54 | ARRAY_SIZE(r8a7790_apmu_config)); | |
| ad09cb83 | 55 | |
| 0445ded6 GI |
56 | /* turn on power to SCU */ |
| 57 | r8a7790_pm_init(); | |
| c2c97ec5 | 58 | rcar_sysc_power_up(&r8a7790_ca15_scu); |
| 0445ded6 | 59 | rcar_sysc_power_up(&r8a7790_ca7_scu); |
| ad09cb83 MD |
60 | } |
| 61 | ||
| 62 | struct smp_operations r8a7790_smp_ops __initdata = { | |
| 63 | .smp_prepare_cpus = r8a7790_smp_prepare_cpus, | |
| 64 | .smp_boot_secondary = shmobile_smp_apmu_boot_secondary, | |
| 65 | #ifdef CONFIG_HOTPLUG_CPU | |
| 66 | .cpu_disable = shmobile_smp_cpu_disable, | |
| 67 | .cpu_die = shmobile_smp_apmu_cpu_die, | |
| 68 | .cpu_kill = shmobile_smp_apmu_cpu_kill, | |
| 69 | #endif | |
| 70 | }; |