From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8C943C0650F for ; Thu, 8 Aug 2019 12:54:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 623332189E for ; Thu, 8 Aug 2019 12:54:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="lfH0Guq7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732686AbfHHMyL (ORCPT ); Thu, 8 Aug 2019 08:54:11 -0400 Received: from mail-ua1-f66.google.com ([209.85.222.66]:39138 "EHLO mail-ua1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727649AbfHHMyJ (ORCPT ); Thu, 8 Aug 2019 08:54:09 -0400 Received: by mail-ua1-f66.google.com with SMTP id j8so36333514uan.6 for ; Thu, 08 Aug 2019 05:54:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=GW4A3C1/4qWDt5LBlXwXuni4NJquarin7tqfcXTVjvA=; b=lfH0Guq7PuuNdAstn4QvxA1WDWXEF3ZxoZMxUurXLdQB0K1b8QuLdXm2RUBdqBkzjw nbHOEKeJ9d2HszCaaGiYFnL67LCAcQQUu1X41qjlxyKlZEUkINo2nyce8/wG5u/eXAEh KoITeRYbzKBbwlBtfBNxPixbvmO3FEDl6fu+uZepjSR+VHrgZZ0ikN9zeDm3uC7Q/+xg 5kOLVIOwx+rBBafuahCEcDUrg7fzRmu0ba9qOPREpDwEFYUqfw7e1i5PO/dcm8O7vfYl +Nbkeg991B9T7Fibad/cb1gjMXj2lYJe1eCam3pzY8q/qUq5SRKA01XEeXCdfg3WhtNH m/hg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=GW4A3C1/4qWDt5LBlXwXuni4NJquarin7tqfcXTVjvA=; b=G2O44yUYy2VsrcMPbFp8/VVdM5lJkdUcgn/w8pM8vUc2iWt7RdF/d8prEPjHdTSaBW ghPRYEhg/Cxqo+3KtiCSkDGnfoxUEvl7B9bIzKiiY/X7F2yHqP9vNCT4jWS62B90NU7z dvk6yeEpfAst8Bz5MUO7S6t7P8L7WRKoFdhXkd6zX1XEgTpglMJtlsuyai7z+SACLAHp W46gmpjW3Rgp08jh52FJWjhixlESfZgwMQSwx3pWzHnaFcsdmRQxd1bdmKZhRcngS1my 7OfYD9hvfvofHFYuIAGVBMaz8vKm//Esyr6zJ5YREPtfD86I/nQuc5f3XzZXpZD660zR ThUw== X-Gm-Message-State: APjAAAUz6hgWwdDnX/ZMJE8eaaaGubR3Bm3FKuXSrODm5WMLaXJCy+rB SGE2Yv5TckGduQCOdfdIwls= X-Google-Smtp-Source: APXvYqxA8ql4HsS90B4Em4+N++thda+fqBtapHgDdeZqhSEKF1hyxafxxEBRNkzfdHs9nDqOh9ekGA== X-Received: by 2002:ab0:2906:: with SMTP id v6mr9065083uap.96.1565268848111; Thu, 08 Aug 2019 05:54:08 -0700 (PDT) Received: from asus-S451LA.lan ([190.22.21.218]) by smtp.gmail.com with ESMTPSA id r190sm26961692vkr.8.2019.08.08.05.54.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Aug 2019 05:54:07 -0700 (PDT) From: Luis Araneda To: linux@armlinux.org.uk, michal.simek@xilinx.com Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Luis Araneda Subject: [PATCH v2 1/2] ARM: zynq: support smp in thumb mode Date: Thu, 8 Aug 2019 08:52:42 -0400 Message-Id: <20190808125243.31046-2-luaraneda@gmail.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190808125243.31046-1-luaraneda@gmail.com> References: <20190808125243.31046-1-luaraneda@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add .arm directive to headsmp.S to ensure that the CPU starts in 32-bit ARM mode and the correct code size is copied on smp bring-up. This is related to the fix applied to SoCFPGA by commit 5616f36713ea ("ARM: SoCFPGA: Fix secondary CPU startup in thumb2 kernel") Additionally, start secondary CPUs on secondary_startup_arm to automatically switch from ARM to thumb on a thumb kernel Signed-off-by: Luis Araneda Suggested-by: Michal Simek --- Changes: v1 -> v2: - Reword commit message to include related commits --- arch/arm/mach-zynq/headsmp.S | 2 ++ arch/arm/mach-zynq/platsmp.c | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-zynq/headsmp.S b/arch/arm/mach-zynq/headsmp.S index ab85003cf9ad..3449e0d1f990 100644 --- a/arch/arm/mach-zynq/headsmp.S +++ b/arch/arm/mach-zynq/headsmp.S @@ -7,6 +7,8 @@ #include #include + .arm + ENTRY(zynq_secondary_trampoline) ARM_BE8(setend be) @ ensure we are in BE8 mode ldr r0, zynq_secondary_trampoline_jump diff --git a/arch/arm/mach-zynq/platsmp.c b/arch/arm/mach-zynq/platsmp.c index a7cfe07156f4..38728badabd4 100644 --- a/arch/arm/mach-zynq/platsmp.c +++ b/arch/arm/mach-zynq/platsmp.c @@ -81,7 +81,7 @@ EXPORT_SYMBOL(zynq_cpun_start); static int zynq_boot_secondary(unsigned int cpu, struct task_struct *idle) { - return zynq_cpun_start(__pa_symbol(secondary_startup), cpu); + return zynq_cpun_start(__pa_symbol(secondary_startup_arm), cpu); } /* -- 2.22.0