From patchwork Sat May 16 07:58:28 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yingjoe Chen X-Patchwork-Id: 6419491 Return-Path: X-Original-To: patchwork-linux-mediatek@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id D4EF5C0435 for ; Sat, 16 May 2015 08:01:19 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D6995205B8 for ; Sat, 16 May 2015 08:01:18 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3DA96205C2 for ; Sat, 16 May 2015 08:01:17 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1YtX24-0002wQ-1u; Sat, 16 May 2015 08:01:16 +0000 Received: from [210.61.82.184] (helo=mailgw02.mediatek.com) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YtX0Z-0000qX-UP; Sat, 16 May 2015 07:59:46 +0000 X-Listener-Flag: 11101 Received: from mtkhts07.mediatek.inc [(172.21.101.69)] by mailgw02.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 827888221; Sat, 16 May 2015 15:59:12 +0800 Received: from mtksdtcf02.mediatek.inc (10.21.12.142) by mtkhts07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 14.3.181.6; Sat, 16 May 2015 15:59:11 +0800 From: Yingjoe Chen To: Mark Rutland , Matthias Brugger , Thomas Gleixner , Russell King Subject: [PATCH v2 7/9] ARM: mediatek: add smp bringup code Date: Sat, 16 May 2015 15:58:28 +0800 Message-ID: <1431763110-443-8-git-send-email-yingjoe.chen@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1431763110-443-1-git-send-email-yingjoe.chen@mediatek.com> References: <1431763110-443-1-git-send-email-yingjoe.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150516_005944_213322_966C8FDB X-CRM114-Status: GOOD ( 14.87 ) X-Spam-Score: 1.3 (+) Cc: devicetree@vger.kernel.org, Arnd Bergmann , Pawel Moll , Catalin Marinas , Daniel Lezcano , Stephen Boyd , linux-kernel@vger.kernel.org, Marc Carino , Rob Herring , linux-mediatek@lists.infradead.org, Sascha Hauer , Olof Johansson , Yingjoe Chen , srv_heupstream@mediatek.com, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable 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 Add support for booting secondary CPUs on mt6589, mt8127 and mt8135. Signed-off-by: Yingjoe Chen --- arch/arm/mach-mediatek/Makefile | 3 + arch/arm/mach-mediatek/platsmp.c | 144 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 147 insertions(+) create mode 100644 arch/arm/mach-mediatek/platsmp.c diff --git a/arch/arm/mach-mediatek/Makefile b/arch/arm/mach-mediatek/Makefile index 43e619f..2116460 100644 --- a/arch/arm/mach-mediatek/Makefile +++ b/arch/arm/mach-mediatek/Makefile @@ -1 +1,4 @@ +ifeq ($(CONFIG_SMP),y) +obj-$(CONFIG_ARCH_MEDIATEK) += platsmp.o +endif obj-$(CONFIG_ARCH_MEDIATEK) += mediatek.o diff --git a/arch/arm/mach-mediatek/platsmp.c b/arch/arm/mach-mediatek/platsmp.c new file mode 100644 index 0000000..b3cf75f --- /dev/null +++ b/arch/arm/mach-mediatek/platsmp.c @@ -0,0 +1,144 @@ +/* + * arch/arm/mach-mediatek/platsmp.c + * + * Copyright (c) 2014 Mediatek Inc. + * Author: Shunli Wang + * Yingjoe Chen + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * 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 + +#define MTK_MAX_CPU 8 +#define MTK_SMP_REG_SIZE 0x1000 + +struct mtk_smp_boot_info { + unsigned long smp_base; + unsigned int jump_reg; + unsigned int core_keys[MTK_MAX_CPU - 1]; + unsigned int core_regs[MTK_MAX_CPU - 1]; +}; + +static const struct mtk_smp_boot_info mtk_mt8135_tz_boot = { + 0x80002000, 0x3fc, + { 0x534c4131, 0x4c415332, 0x41534c33 }, + { 0x3f8, 0x3f8, 0x3f8 }, +}; + +static const struct mtk_smp_boot_info mtk_mt6589_boot = { + 0x10002000, 0x34, + { 0x534c4131, 0x4c415332, 0x41534c33 }, + { 0x38, 0x3c, 0x40 }, +}; + +static const struct of_device_id mtk_tz_smp_boot_infos[] __initconst = { + { .compatible = "mediatek,mt8135", .data = &mtk_mt8135_tz_boot }, + { .compatible = "mediatek,mt8127", .data = &mtk_mt8135_tz_boot }, +}; + +static const struct of_device_id mtk_smp_boot_infos[] __initconst = { + { .compatible = "mediatek,mt6589", .data = &mtk_mt6589_boot }, +}; + +static void __iomem *mtk_smp_base; +static const struct mtk_smp_boot_info *mtk_smp_info; + +static int mtk_boot_secondary(unsigned int cpu, struct task_struct *idle) +{ + if (!mtk_smp_base) + return -EINVAL; + + if (!mtk_smp_info->core_keys[cpu-1]) + return -EINVAL; + + writel_relaxed(mtk_smp_info->core_keys[cpu-1], + mtk_smp_base + mtk_smp_info->core_regs[cpu-1]); + + arch_send_wakeup_ipi_mask(cpumask_of(cpu)); + + return 0; +} + +static void __init __mtk_smp_prepare_cpus(unsigned int max_cpus, int trustzone) +{ + int i, num; + const struct of_device_id *infos; + + if (trustzone) { + num = ARRAY_SIZE(mtk_tz_smp_boot_infos); + infos = mtk_tz_smp_boot_infos; + } else { + num = ARRAY_SIZE(mtk_smp_boot_infos); + infos = mtk_smp_boot_infos; + } + + /* Find smp boot info for this SoC */ + for (i = 0; i < num; i++) { + if (of_machine_is_compatible(infos[i].compatible)) { + mtk_smp_info = infos[i].data; + break; + } + } + + if (!mtk_smp_info) { + pr_err("%s: Device is not supported\n", __func__); + return; + } + + if (trustzone) { + if (memblock_reserve(mtk_smp_info->smp_base, MTK_SMP_REG_SIZE)) { + pr_err("%s: Can't reserve smp memory\n", __func__); + return; + } + mtk_smp_base = phys_to_virt(mtk_smp_info->smp_base); + } else { + mtk_smp_base = ioremap(mtk_smp_info->smp_base, MTK_SMP_REG_SIZE); + if (!mtk_smp_base) { + pr_err("%s: Can't remap %lx\n", __func__, + mtk_smp_info->smp_base); + return; + } + } + + /* + * write the address of slave startup address into the system-wide + * jump register + */ + writel_relaxed(virt_to_phys(secondary_startup_arm), + mtk_smp_base + mtk_smp_info->jump_reg); +} + +static void __init mtk_tz_smp_prepare_cpus(unsigned int max_cpus) +{ + __mtk_smp_prepare_cpus(max_cpus, 1); +} + +static void __init mtk_smp_prepare_cpus(unsigned int max_cpus) +{ + __mtk_smp_prepare_cpus(max_cpus, 0); +} + +static struct smp_operations mt81xx_tz_smp_ops __initdata = { + .smp_prepare_cpus = mtk_tz_smp_prepare_cpus, + .smp_boot_secondary = mtk_boot_secondary, +}; +CPU_METHOD_OF_DECLARE(mt81xx_tz_smp, "mediatek,mt81xx-tz-smp", &mt81xx_tz_smp_ops); + +static struct smp_operations mt65xx_smp_ops __initdata = { + .smp_prepare_cpus = mtk_smp_prepare_cpus, + .smp_boot_secondary = mtk_boot_secondary, +}; +CPU_METHOD_OF_DECLARE(mt65xx_smp, "mediatek,mt65xx-smp", &mt65xx_smp_ops);