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[2620:137:e000::3:7]) by mx.google.com with ESMTPS id b6-20020a633406000000b005ab190f94ffsi3897315pga.605.2023.10.19.02.47.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 19 Oct 2023 02:47:11 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) client-ip=2620:137:e000::3:7; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by snail.vger.email (Postfix) with ESMTP id B65E080C5FB5; Thu, 19 Oct 2023 02:47:10 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at snail.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345140AbjJSJq6 (ORCPT + 99 others); Thu, 19 Oct 2023 05:46:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57320 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345094AbjJSJqy (ORCPT ); Thu, 19 Oct 2023 05:46:54 -0400 Received: from michel.telenet-ops.be (michel.telenet-ops.be [IPv6:2a02:1800:110:4::f00:18]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3DA4218C for ; Thu, 19 Oct 2023 02:46:50 -0700 (PDT) Received: from ramsan.of.borg ([IPv6:2a02:1810:ac12:ed40:2008:f423:365a:a88b]) by michel.telenet-ops.be with bizsmtp id zlml2A00H1ooZrg06lmlMN; Thu, 19 Oct 2023 11:46:47 +0200 Received: from rox.of.borg ([192.168.97.57]) by ramsan.of.borg with esmtp (Exim 4.95) (envelope-from ) id 1qtPc1-006w34-0Y; Thu, 19 Oct 2023 11:46:45 +0200 Received: from geert by rox.of.borg with local (Exim 4.95) (envelope-from ) id 1qtPc5-00D4Zy-An; Thu, 19 Oct 2023 11:46:45 +0200 From: Geert Uytterhoeven To: Jonathan Corbet , Yoshinori Sato , Rich Felker , John Paul Adrian Glaubitz , Paul Gortmaker , Thomas Gleixner , Magnus Damm Cc: linux-doc@vger.kernel.org, linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH 2/2] Documentation: kernel-parameters: Add earlyprintk=bios on SH Date: Thu, 19 Oct 2023 11:46:44 +0200 Message-Id: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-1.6 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE, SPF_NONE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Thu, 19 Oct 2023 02:47:11 -0700 (PDT) Document the use of the "earlyprintk=bios[,keep]" kernel parameter option on SuperH systems with a SuperH standard BIOS. Signed-off-by: Geert Uytterhoeven --- Documentation/admin-guide/kernel-parameters.txt | 3 +++ 1 file changed, 3 insertions(+) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 657bb0b54e2fc6cf..8e7f6be051a0e1d3 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1331,6 +1331,7 @@ earlyprintk=dbgp[debugController#] earlyprintk=pciserial[,force],bus:device.function[,baudrate] earlyprintk=xdbc[xhciController#] + earlyprintk=bios earlyprintk is useful when the kernel crashes before the normal console is initialized. It is not enabled by @@ -1361,6 +1362,8 @@ The sclp output can only be used on s390. + The bios output can only be used on SuperH. + The optional "force" to "pciserial" enables use of a PCI device even when its classcode is not of the UART class. -- 2.34.1