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=-2.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 A3973C49ED7 for ; Mon, 16 Sep 2019 11:57:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7653F214AF for ; Mon, 16 Sep 2019 11:57:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=sifive.com header.i=@sifive.com header.b="EFCHz3OI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731632AbfIPL5T (ORCPT ); Mon, 16 Sep 2019 07:57:19 -0400 Received: from mail-wm1-f68.google.com ([209.85.128.68]:38279 "EHLO mail-wm1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727309AbfIPL5T (ORCPT ); Mon, 16 Sep 2019 07:57:19 -0400 Received: by mail-wm1-f68.google.com with SMTP id o184so9982064wme.3 for ; Mon, 16 Sep 2019 04:57:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=date:from:to:cc:subject:in-reply-to:message-id:references :user-agent:mime-version; bh=A8KpKxE5/TCH8dxfTxqIPDIeEF4A15g4Y1Nx2SIGDMM=; b=EFCHz3OIRhtn7f84ycqptRsNU7sOugoVct7LGmPkUvlfrHMqotNHm4aA6HgkcJqEru 4ulzRNPTuYupGcXDbDRNC/6SH1sX0+RD9v6XuhhGyq1rgfMRwPr6AKyMYNZqSVDLVLxx gpXl4TsIljDZ79UupeVt5WX/4j0ojl0XJaXllv93W7s2Dz1tqbiybFbUe+FzqVnzylbp FBuihxhA9Hrzt5Ab9N6IQXwGKmqFTG8KKga/WRYLbsu4O5DPdieQLw0szr03eGj9VkiL qnWZac7IYohHC4cbIsEI1iY5gJX/KI6Ewenp3fLYkqWI2VPJPqPAWmLjLCabIAdIj9mm 7+Vw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:in-reply-to:message-id :references:user-agent:mime-version; bh=A8KpKxE5/TCH8dxfTxqIPDIeEF4A15g4Y1Nx2SIGDMM=; b=EhEVWJrChSoEtgtTsCKhMSTTkaL7YZLJiJ8iF+hJkuMtT/vFq1g9cHA2RCr5YlljVu rfY/61av5toM1KKTRXlFdJXsCXJfRAY0HqFpECj4z00VeySXsGOFRTEotNGwblwUOwD0 fdKN1tXF3RqAMnChK/ApyPlI/KavvTEKzl+QAyYBfbu6I7kpdCY9As2teNLSvEWZuG0k 9kQW8fO5m+w/FVATzHC0sQG0wKBm/9fNoiI8T45GS25gOZLsBcxi0Xj6LmKSGPMszDiG Xhj4kfaNIniXGeYe++n5hW9r17SEGIEPX1E2H2jRxMGwJPrIH9fblMA+hZXZ8r6Bupse B+tw== X-Gm-Message-State: APjAAAU73pab2Jph3E3/iOsUQtmrLWuPnYp2macBMBxQ171rui7hfN+B x8l9EN48eNAkLz96b1ADNIhe7w== X-Google-Smtp-Source: APXvYqwvaXAToK3N7Dq6gBnUUF2ouck3zigq8a1VamrYjh9bMW1cIFLpi8bkeIrkaTJxW6vXEmn4gw== X-Received: by 2002:a7b:c5c5:: with SMTP id n5mr11858939wmk.69.1568635036421; Mon, 16 Sep 2019 04:57:16 -0700 (PDT) Received: from localhost ([195.200.173.126]) by smtp.gmail.com with ESMTPSA id r20sm1421258wmh.37.2019.09.16.04.57.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Sep 2019 04:57:15 -0700 (PDT) Date: Mon, 16 Sep 2019 04:57:14 -0700 (PDT) From: Paul Walmsley X-X-Sender: paulw@viisi.sifive.com To: Andreas Schwab cc: Christoph Hellwig , gregkh@linuxfoundation.org, jslaby@suse.com, linux-serial@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] serial/sifive: select SERIAL_EARLYCON In-Reply-To: Message-ID: References: <20190910055923.28384-1-hch@lst.de> <20190910070503.GA31743@lst.de> User-Agent: Alpine 2.21.9999 (DEB 301 2018-08-15) MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="8323329-1619585291-1568635034=:7214" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --8323329-1619585291-1568635034=:7214 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE On Tue, 10 Sep 2019, Andreas Schwab wrote: > On Sep 10 2019, Christoph Hellwig wrote: >=20 > > On Tue, Sep 10, 2019 at 08:57:37AM +0200, Andreas Schwab wrote: > >> On Sep 10 2019, Christoph Hellwig wrote: > >>=20 > >> > The sifive serial driver implements earlycon support, > >>=20 > >> It should probably be documented in admin-guide/kernel-parameters.txt. > > > > How so? W=D1=96th OF and a stdout path you just set earlycon on the > > command line without any arguments and it will be found. >=20 > Doesn't work for me. >=20 > [ 0.000000] Malformed early option 'earlycon' Try: earlycon=3Dsifive,0x10010000 If it works, you should see this message on the kernel console very early= =20 in the boot: [ 0.000000] earlycon: sifive0 at MMIO 0x0000000010010000 (options '') - Paul --8323329-1619585291-1568635034=:7214--