From patchwork Mon Jan 13 18:16:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandre TORGUE X-Patchwork-Id: 11330735 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F16791398 for ; Mon, 13 Jan 2020 18:17:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CEE3D21744 for ; Mon, 13 Jan 2020 18:17:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=st.com header.i=@st.com header.b="OCTJgx0T" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728920AbgAMSQw (ORCPT ); Mon, 13 Jan 2020 13:16:52 -0500 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:4750 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728760AbgAMSQv (ORCPT ); Mon, 13 Jan 2020 13:16:51 -0500 Received: from pps.filterd (m0046037.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 00DICkhe015025; Mon, 13 Jan 2020 19:16:33 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=st.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=STMicroelectronics; bh=WEGaEwx/ta6sY7T0Fd98KdzWPvWPmF9vLPRCHL2k/9I=; b=OCTJgx0Tfaj0GjPrU4PzpoUKJq+f9AD5dJ11hx8xMjbCCgJc1+Xzae8q+YhUaLFRsuV2 9b6RFfWG0grpGsgs3gz9i6jbiECabhOi295sXa3DPeSDLmwwAPO3zTdPgPb3Cy9GMmFy tob1X6sR8Swk5Y+tRtVqX/8O4UgXMuf1165oookhx2xvGPdaLlcjoHiVPhnRthLxXbRK UTjPht3U9VTA+dMrCdt7135Ro1yFN78GhHtPA8+2M+4K2GCF+N1F6f/rNXrsLdDrnfO3 Wdz4glfXovHztMfRCFh3FclrABChbfkKQ5f7bOtsucUMyaZ2hCvU1Qinfxwuc70reh60 lg== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 2xf7fnhg6a-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 13 Jan 2020 19:16:33 +0100 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id C3064100038; Mon, 13 Jan 2020 19:16:28 +0100 (CET) Received: from Webmail-eu.st.com (sfhdag3node2.st.com [10.75.127.8]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id B06FF2B1881; Mon, 13 Jan 2020 19:16:28 +0100 (CET) Received: from localhost (10.75.127.49) by SFHDAG3NODE2.st.com (10.75.127.8) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Mon, 13 Jan 2020 19:16:28 +0100 From: Alexandre Torgue To: , Frank Rowand , Masahiro Yamada , Michal Marek , , CC: , Alexandre Torgue , , , Subject: [RFC PATCH 0/3] Add device tree build information Date: Mon, 13 Jan 2020 19:16:22 +0100 Message-ID: <20200113181625.3130-1-alexandre.torgue@st.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.75.127.49] X-ClientProxiedBy: SFHDAG4NODE1.st.com (10.75.127.10) To SFHDAG3NODE2.st.com (10.75.127.8) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-01-13_06:2020-01-13,2020-01-13 signatures=0 Sender: linux-kbuild-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org Hi, The goal of this series is to add device tree build information in dtb. This information can be dtb build date, where devicetree files come from, who built the dtb ... Actually, same kind of information that you can find in the Linux banner which is printout during kernel boot. Having the same kind of information for device tree is useful for debugging and maintenance. To achieve that a new option "-B" (using an argument) is added to dtc. The argument is a file containing a string with build information (e.g., From Linux 5.5.0-rc1 by alex the Mon Jan 13 18:25:38 CET 2020). DTC use it to append dts file with a new string property "Build-info". of/fdt.c is modified to printout "Build-info" property during Kernel boot and scripts/Makefile.lib is modified to use dtc -B option during kernel make (this last part could be improved for sure). Regards Alex Alexandre Torgue (3): dtc: Add dtb build information option of: fdt: print dtb build information scripts: Use -B dtc option to generate dtb build information. drivers/of/fdt.c | 9 +++++++ scripts/Makefile.lib | 11 +++++--- scripts/dtc/dtc.c | 55 +++++++++++++++++++++++++++++++++----- scripts/gen_dtb_build_info | 11 ++++++++ 4 files changed, 76 insertions(+), 10 deletions(-) create mode 100755 scripts/gen_dtb_build_info Tested-By: Steve McIntyre