From patchwork Fri Oct 31 09:01:13 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jingchang Lu X-Patchwork-Id: 5203621 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id E01A4C11AC for ; Fri, 31 Oct 2014 09:54:47 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 1355B20172 for ; Fri, 31 Oct 2014 09:54:47 +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 2C6AA20154 for ; Fri, 31 Oct 2014 09:54:46 +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 1Xk8sn-0008Ji-6j; Fri, 31 Oct 2014 09:52:37 +0000 Received: from mail-bn1on0130.outbound.protection.outlook.com ([157.56.110.130] helo=na01-bn1-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Xk8rp-0007rA-MM for linux-arm-kernel@lists.infradead.org; Fri, 31 Oct 2014 09:51:38 +0000 Received: from BY2PR03CA066.namprd03.prod.outlook.com (10.141.249.39) by DM2PR03MB478.namprd03.prod.outlook.com (10.141.85.22) with Microsoft SMTP Server (TLS) id 15.1.6.9; Fri, 31 Oct 2014 09:51:14 +0000 Received: from BN1BFFO11FD060.protection.gbl (2a01:111:f400:7c10::1:128) by BY2PR03CA066.outlook.office365.com (2a01:111:e400:2c5d::39) with Microsoft SMTP Server (TLS) id 15.1.11.14 via Frontend Transport; Fri, 31 Oct 2014 09:51:14 +0000 Received: from az84smr01.freescale.net (192.88.158.2) by BN1BFFO11FD060.mail.protection.outlook.com (10.58.145.15) with Microsoft SMTP Server (TLS) id 15.0.1049.20 via Frontend Transport; Fri, 31 Oct 2014 09:51:13 +0000 Received: from rock.ap.freescale.net (rock.ap.freescale.net [10.193.20.106]) by az84smr01.freescale.net (8.14.3/8.14.0) with ESMTP id s9V9omQb030133; Fri, 31 Oct 2014 02:51:10 -0700 From: Jingchang Lu To: Subject: [RESENDv6 6/6] ARM: imx: Add Freescale LS1021A SMP support Date: Fri, 31 Oct 2014 17:01:13 +0800 Message-ID: <1414746073-12394-7-git-send-email-jingchang.lu@freescale.com> X-Mailer: git-send-email 1.8.0 In-Reply-To: <1414746073-12394-1-git-send-email-jingchang.lu@freescale.com> References: <1414746073-12394-1-git-send-email-jingchang.lu@freescale.com> X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:192.88.158.2; CTRY:US; IPV:CAL; IPV:NLI; EFV:NLI; SFV:NSPM; SFS:(10019020)(6009001)(189002)(199003)(86362001)(85306004)(95666004)(44976005)(84676001)(6806004)(76482002)(89996001)(87936001)(77156001)(87286001)(99396003)(93916002)(97736003)(68736004)(110136001)(47776003)(85852003)(19580405001)(69596002)(20776003)(19580395003)(92726001)(107046002)(120916001)(31966008)(50986999)(62966002)(50466002)(48376002)(105606002)(229853001)(2351001)(26826002)(36756003)(64706001)(4396001)(21056001)(46102003)(76176999)(104016003)(104166001)(92566001)(102836001)(81156004)(33646002)(50226001)(106466001)(88136002)(80022003); DIR:OUT; SFP:1102; SCL:1; SRVR:DM2PR03MB478; H:az84smr01.freescale.net; FPR:; MLV:ovrnspm; PTR:InfoDomainNonexistent; MX:1; A:1; LANG:en; MIME-Version: 1.0 X-Microsoft-Antispam: UriScan:; X-Microsoft-Antispam: BCL:0;PCL:0;RULEID:;SRVR:DM2PR03MB478; X-Forefront-PRVS: 03818C953D Received-SPF: Fail (protection.outlook.com: domain of freescale.com does not designate 192.88.158.2 as permitted sender) receiver=protection.outlook.com; client-ip=192.88.158.2; helo=az84smr01.freescale.net; Authentication-Results: spf=fail (sender IP is 192.88.158.2) smtp.mailfrom=jingchang.lu@freescale.com; X-OriginatorOrg: freescale.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20141031_025137_988862_8D56973A X-CRM114-Status: UNSURE ( 9.74 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.0 (/) Cc: mark.rutland@arm.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, arnd@arndb.de X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, 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 From: Jingchang Lu Freescale LS1021A SoCs deploy two cortex-A7 processors, this adds bring-up support for the secondary core. Signed-off-by: Jingchang Lu --- arch/arm/mach-imx/Makefile | 2 +- arch/arm/mach-imx/common.h | 1 + arch/arm/mach-imx/mach-ls1021a.c | 1 + arch/arm/mach-imx/platsmp.c | 33 +++++++++++++++++++++++++++++++++ 4 files changed, 36 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile index 19dc7bf..f5ac685 100644 --- a/arch/arm/mach-imx/Makefile +++ b/arch/arm/mach-imx/Makefile @@ -89,7 +89,7 @@ obj-$(CONFIG_HAVE_IMX_ANATOP) += anatop.o obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o obj-$(CONFIG_HAVE_IMX_MMDC) += mmdc.o obj-$(CONFIG_HAVE_IMX_SRC) += src.o -ifdef CONFIG_SOC_IMX6 +ifneq ($(CONFIG_SOC_IMX6)$(CONFIG_SOC_LS1021A),) AFLAGS_headsmp.o :=-Wa,-march=armv7-a obj-$(CONFIG_SMP) += headsmp.o platsmp.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h index 23c84e6..fe9a908 100644 --- a/arch/arm/mach-imx/common.h +++ b/arch/arm/mach-imx/common.h @@ -158,5 +158,6 @@ static inline void imx_init_l2cache(void) {} #endif extern struct smp_operations imx_smp_ops; +extern struct smp_operations ls1021a_smp_ops; #endif diff --git a/arch/arm/mach-imx/mach-ls1021a.c b/arch/arm/mach-imx/mach-ls1021a.c index 9d2034b..b89c858 100644 --- a/arch/arm/mach-imx/mach-ls1021a.c +++ b/arch/arm/mach-imx/mach-ls1021a.c @@ -17,5 +17,6 @@ static const char * const ls1021a_dt_compat[] __initconst = { }; DT_MACHINE_START(LS1021A, "Freescale LS1021A") + .smp = smp_ops(ls1021a_smp_ops), .dt_compat = ls1021a_dt_compat, MACHINE_END diff --git a/arch/arm/mach-imx/platsmp.c b/arch/arm/mach-imx/platsmp.c index 771bd25..7f27001 100644 --- a/arch/arm/mach-imx/platsmp.c +++ b/arch/arm/mach-imx/platsmp.c @@ -11,7 +11,10 @@ */ #include +#include +#include #include + #include #include #include @@ -94,3 +97,33 @@ struct smp_operations imx_smp_ops __initdata = { .cpu_kill = imx_cpu_kill, #endif }; + +#define DCFG_CCSR_SCRATCHRW1 0x200 + +static int ls1021a_boot_secondary(unsigned int cpu, struct task_struct *idle) +{ + arch_send_wakeup_ipi_mask(cpumask_of(cpu)); + + return 0; +} + +static void __init ls1021a_smp_prepare_cpus(unsigned int max_cpus) +{ + struct device_node *np; + void __iomem *dcfg_base; + unsigned long paddr; + + np = of_find_compatible_node(NULL, NULL, "fsl,ls1021a-dcfg"); + dcfg_base = of_iomap(np, 0); + BUG_ON(!dcfg_base); + + paddr = virt_to_phys(secondary_startup); + writel_relaxed(cpu_to_be32(paddr), dcfg_base + DCFG_CCSR_SCRATCHRW1); + + iounmap(dcfg_base); +} + +struct smp_operations ls1021a_smp_ops __initdata = { + .smp_prepare_cpus = ls1021a_smp_prepare_cpus, + .smp_boot_secondary = ls1021a_boot_secondary, +};