From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- arch/arm/mach-shmobile/smp-r8a7790.c | 71 ++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 arch/arm/mach-shmobile/smp-r8a7790.c (limited to 'arch/arm/mach-shmobile/smp-r8a7790.c') diff --git a/arch/arm/mach-shmobile/smp-r8a7790.c b/arch/arm/mach-shmobile/smp-r8a7790.c new file mode 100644 index 000000000..930f45cbc --- /dev/null +++ b/arch/arm/mach-shmobile/smp-r8a7790.c @@ -0,0 +1,71 @@ +/* + * SMP support for r8a7790 + * + * Copyright (C) 2012-2013 Renesas Solutions Corp. + * Copyright (C) 2012 Takashi Yoshii + * + * 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 +#include +#include +#include + +#include + +#include "common.h" +#include "platsmp-apmu.h" +#include "pm-rcar.h" +#include "rcar-gen2.h" +#include "r8a7790.h" + +static struct rcar_sysc_ch r8a7790_ca15_scu = { + .chan_offs = 0x180, /* PWRSR5 .. PWRER5 */ + .isr_bit = 12, /* CA15-SCU */ +}; + +static 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); +} + +struct smp_operations r8a7790_smp_ops __initdata = { + .smp_prepare_cpus = r8a7790_smp_prepare_cpus, + .smp_boot_secondary = shmobile_smp_apmu_boot_secondary, +#ifdef CONFIG_HOTPLUG_CPU + .cpu_disable = shmobile_smp_cpu_disable, + .cpu_die = shmobile_smp_apmu_cpu_die, + .cpu_kill = shmobile_smp_apmu_cpu_kill, +#endif +}; -- cgit v1.2.3-54-g00ecf