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[188.192.34.37]) by mx.google.com with ESMTPSA id ew10sm2212512wic.22.2015.05.21.03.48.45 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 21 May 2015 03:48:46 -0700 (PDT) From: Ulrich Hecht To: geert@linux-m68k.org, horms@verge.net.au, linux-sh@vger.kernel.org, laurent.pinchart+renesas@ideasonboard.com, kuninori.morimoto.gx@renesas.com Cc: magnus.damm@gmail.com, Ulrich Hecht , Hisashi Nakamura Subject: [PATCH v3 04/11] ARM: shmobile: r8a7793: add SMP support Date: Thu, 21 May 2015 12:48:06 +0200 Message-Id: <1432205293-9488-5-git-send-email-ulrich.hecht+renesas@gmail.com> X-Mailer: git-send-email 2.3.5 In-Reply-To: <1432205293-9488-1-git-send-email-ulrich.hecht+renesas@gmail.com> References: <1432205293-9488-1-git-send-email-ulrich.hecht+renesas@gmail.com> Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org X-Spam-Status: No, score=-6.8 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, T_DKIM_INVALID, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Enables SMP support, similar to other R-Car Gen2 SoCs. Signed-off-by: Hisashi Nakamura [uli: moved reset handling to PM, minor adjustments] Signed-off-by: Ulrich Hecht --- arch/arm/mach-shmobile/Makefile | 1 + arch/arm/mach-shmobile/r8a7793.h | 6 +++ arch/arm/mach-shmobile/setup-r8a7793.c | 1 + arch/arm/mach-shmobile/smp-r8a7793.c | 70 ++++++++++++++++++++++++++++++++++ 4 files changed, 78 insertions(+) create mode 100644 arch/arm/mach-shmobile/r8a7793.h create mode 100644 arch/arm/mach-shmobile/smp-r8a7793.c diff --git a/arch/arm/mach-shmobile/Makefile b/arch/arm/mach-shmobile/Makefile index e4b8fdb..a8f5d5d 100644 --- a/arch/arm/mach-shmobile/Makefile +++ b/arch/arm/mach-shmobile/Makefile @@ -42,6 +42,7 @@ smp-$(CONFIG_ARCH_SH73A0) += smp-sh73a0.o headsmp-scu.o platsmp-scu.o smp-$(CONFIG_ARCH_R8A7779) += smp-r8a7779.o headsmp-scu.o platsmp-scu.o smp-$(CONFIG_ARCH_R8A7790) += smp-r8a7790.o smp-$(CONFIG_ARCH_R8A7791) += smp-r8a7791.o +smp-$(CONFIG_ARCH_R8A7793) += smp-r8a7793.o smp-$(CONFIG_ARCH_EMEV2) += smp-emev2.o headsmp-scu.o platsmp-scu.o # PM objects diff --git a/arch/arm/mach-shmobile/r8a7793.h b/arch/arm/mach-shmobile/r8a7793.h new file mode 100644 index 0000000..f961677 --- /dev/null +++ b/arch/arm/mach-shmobile/r8a7793.h @@ -0,0 +1,6 @@ +#ifndef __ASM_R8A7793_H__ +#define __ASM_R8A7793_H__ + +extern struct smp_operations r8a7793_smp_ops; + +#endif /* __ASM_R8A7793_H__ */ diff --git a/arch/arm/mach-shmobile/setup-r8a7793.c b/arch/arm/mach-shmobile/setup-r8a7793.c index 1d2825c..2d7f18a 100644 --- a/arch/arm/mach-shmobile/setup-r8a7793.c +++ b/arch/arm/mach-shmobile/setup-r8a7793.c @@ -17,6 +17,7 @@ #include #include "common.h" +#include "r8a7793.h" #include "rcar-gen2.h" static const char *r8a7793_boards_compat_dt[] __initconst = { diff --git a/arch/arm/mach-shmobile/smp-r8a7793.c b/arch/arm/mach-shmobile/smp-r8a7793.c new file mode 100644 index 0000000..496737f --- /dev/null +++ b/arch/arm/mach-shmobile/smp-r8a7793.c @@ -0,0 +1,70 @@ +/* + * SMP support for r8a7793 + * + * Copyright (C) 2014 Renesas Electronics Corporation + * Copyright (C) 2015 Ulrich Hecht + * + * 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 "platsmp-apmu.h" + +#include "common.h" +#include "pm-rcar.h" +#include "r8a7793.h" +#include "rcar-gen2.h" + +#define APMU 0xe6151000 +#define CA15DBGRCR 0x1180 +#define CA15RESCNT 0x0040 + +static struct rcar_apmu_config r8a7793_apmu_config[] = { + { + .iomem = DEFINE_RES_MEM(0xe6152000, 0x88), + .cpus = { 0, 1 }, + }, +}; + +static void __init r8a7793_smp_prepare_cpus(unsigned int max_cpus) +{ + void __iomem *p; + u32 val; + + /* let APMU code install data related to shmobile_boot_vector */ + shmobile_smp_apmu_prepare_cpus(max_cpus, + r8a7793_apmu_config, + ARRAY_SIZE(r8a7793_apmu_config)); + + /* setup for debug mode */ + if (rcar_gen2_read_mode_pins() & MD(21)) { + p = ioremap_nocache(APMU, 0x2000); + val = readl_relaxed(p + CA15DBGRCR); + writel_relaxed((val | 0x01f80000), p + CA15DBGRCR); + iounmap(p); + } + rcar_gen2_pm_init(); +} + +struct smp_operations r8a7793_smp_ops __initdata = { + .smp_prepare_cpus = r8a7793_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 +}; + +CPU_METHOD_OF_DECLARE(r8a7793_smp, "renesas,r8a7793", &r8a7793_smp_ops);