From patchwork Tue Sep 9 09:12:32 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jingchang Lu X-Patchwork-Id: 4867581 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 8D4839F32E for ; Tue, 9 Sep 2014 10:07:10 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 529BA2013D for ; Tue, 9 Sep 2014 10:07:09 +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 0F1E2200F0 for ; Tue, 9 Sep 2014 10:07:08 +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 1XRIId-0005Si-KA; Tue, 09 Sep 2014 10:05:23 +0000 Received: from mail-bn1bn0107.outbound.protection.outlook.com ([157.56.110.107] helo=na01-bn1-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XRIIE-0003uL-Hk for linux-arm-kernel@lists.infradead.org; Tue, 09 Sep 2014 10:04:59 +0000 Received: from CH1PR03CA007.namprd03.prod.outlook.com (10.255.156.152) by DM2PR03MB478.namprd03.prod.outlook.com (10.141.85.22) with Microsoft SMTP Server (TLS) id 15.0.1019.16; Tue, 9 Sep 2014 10:04:38 +0000 Received: from BN1BFFO11FD002.protection.gbl (10.255.156.132) by CH1PR03CA007.outlook.office365.com (10.255.156.152) with Microsoft SMTP Server (TLS) id 15.0.1024.12 via Frontend Transport; Tue, 9 Sep 2014 10:04:38 +0000 Received: from tx30smr01.am.freescale.net (192.88.168.50) by BN1BFFO11FD002.mail.protection.outlook.com (10.58.144.65) with Microsoft SMTP Server (TLS) id 15.0.1019.14 via Frontend Transport; Tue, 9 Sep 2014 10:04:38 +0000 Received: from rock.ap.freescale.net (rock.ap.freescale.net [10.193.20.106]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id s89A4Hqt026857; Tue, 9 Sep 2014 03:04:35 -0700 From: Jingchang Lu To: Subject: [PATCHv3 6/6] ARM: imx: Add Freescale LS1021A SMP support Date: Tue, 9 Sep 2014 17:12:32 +0800 Message-ID: <1410253952-15631-7-git-send-email-jingchang.lu@freescale.com> X-Mailer: git-send-email 1.8.0 In-Reply-To: <1410253952-15631-1-git-send-email-jingchang.lu@freescale.com> References: <1410253952-15631-1-git-send-email-jingchang.lu@freescale.com> X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:192.88.168.50; CTRY:US; IPV:CAL; IPV:NLI; EFV:NLI; SFV:NSPM; SFS:(10019018)(6009001)(189002)(199003)(89996001)(81342001)(87936001)(20776003)(92566001)(31966008)(26826002)(74662001)(83322001)(68736004)(86362001)(19580395003)(21056001)(87286001)(76176999)(85852003)(85306004)(19580405001)(92726001)(6806004)(64706001)(2351001)(93916002)(80022001)(97736003)(44976005)(81542001)(102836001)(104016003)(62966002)(74502001)(2371004)(48376002)(46102001)(105606002)(76482001)(36756003)(50226001)(77156001)(99396002)(88136002)(90102001)(83072002)(50466002)(84676001)(47776003)(104166001)(50986999)(33646002)(110136001)(4396001)(77982001)(79102001)(106466001)(107046002)(95666004)(229853001); DIR:OUT; SFP:1102; SCL:1; SRVR:DM2PR03MB478; H:tx30smr01.am.freescale.net; FPR:; MLV:ovrnspm; PTR:InfoDomainNonexistent; MX:1; A:1; LANG:en; MIME-Version: 1.0 X-Microsoft-Antispam: BCL:0;PCL:0;RULEID:;UriScan:; X-Forefront-PRVS: 0329B15C8A Received-SPF: Fail (protection.outlook.com: domain of freescale.com does not designate 192.88.168.50 as permitted sender) receiver=protection.outlook.com; client-ip=192.88.168.50; helo=tx30smr01.am.freescale.net; Authentication-Results: spf=fail (sender IP is 192.88.168.50) 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-20140909_030458_705409_EF33D020 X-CRM114-Status: UNSURE ( 9.43 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -1.8 (-) Cc: Jingchang Lu , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org 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=-4.4 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 | 32 ++++++++++++++++++++++++++++++++ 4 files changed, 35 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile index 3e12532..e1e59de 100644 --- a/arch/arm/mach-imx/Makefile +++ b/arch/arm/mach-imx/Makefile @@ -90,7 +90,7 @@ 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 1dabf43..c473ca5 100644 --- a/arch/arm/mach-imx/common.h +++ b/arch/arm/mach-imx/common.h @@ -157,5 +157,6 @@ 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 2ffc20f..d284cdb 100644 --- a/arch/arm/mach-imx/mach-ls1021a.c +++ b/arch/arm/mach-imx/mach-ls1021a.c @@ -27,6 +27,7 @@ DT_MACHINE_START(LS1021A, "Freescale LS1021A") #ifdef CONFIG_ZONE_DMA .dma_zone_size = SZ_128M, #endif + .smp = smp_ops(ls1021a_smp_ops), .init_machine = ls1021a_init_machine, .dt_compat = ls1021a_dt_compat, .restart = mxc_restart, diff --git a/arch/arm/mach-imx/platsmp.c b/arch/arm/mach-imx/platsmp.c index 771bd25..62376f0 100644 --- a/arch/arm/mach-imx/platsmp.c +++ b/arch/arm/mach-imx/platsmp.c @@ -16,6 +16,8 @@ #include #include #include +#include +#include #include "common.h" #include "hardware.h" @@ -94,3 +96,33 @@ 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, +};