From patchwork Fri Feb 21 16:12:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandre TORGUE X-Patchwork-Id: 11396807 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 BDB59138D for ; Fri, 21 Feb 2020 16:13:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9CB20222C4 for ; Fri, 21 Feb 2020 16:13:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=st.com header.i=@st.com header.b="A5HTjgqG" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727876AbgBUQMt (ORCPT ); Fri, 21 Feb 2020 11:12:49 -0500 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:63236 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727720AbgBUQMt (ORCPT ); Fri, 21 Feb 2020 11:12:49 -0500 Received: from pps.filterd (m0046668.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 01LG8Jq2004904; Fri, 21 Feb 2020 17:12:22 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=STMicroelectronics; bh=2k+VXll0ozFYAI5ID9m7C2U0U8scssOA0fcMpcXtXIM=; b=A5HTjgqGRWomdcxY2wBanohSWzeCO10NSYQVoWnt6pjJGxw6Yvy8y8bpHZLGZtHMniGZ SL+MlsQd42epFRUmre2Ni4ftrnzQMgHcDP+imm8Y/DfyHxMSiHDPAZDRYjcRNeKOsr9R K/n6uhnf4MoFR8FN5LlTtLgGZZpQg3so7Hv1206LVa4y+owyCYfJ1MwGaf9f+dGz3g1/ DiblwtCglhy4TrUZzigNd729vl5F7dp0sY0O39ITjLUVFPWqhW7+uY3KY4ZFfFi5wBt5 cd8SFtbOR/tvgr4bpDuxcUbKRWmdbp1hI9w4c7PPn96nk4jfsqk9JAOSQT84Us0yW04r /A== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 2y8ub0g624-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 21 Feb 2020 17:12:22 +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 61BEA100038; Fri, 21 Feb 2020 17:12:21 +0100 (CET) Received: from Webmail-eu.st.com (sfhdag3node2.st.com [10.75.127.8]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 486512BE24C; Fri, 21 Feb 2020 17:12:21 +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; Fri, 21 Feb 2020 17:12:20 +0100 From: Alexandre Torgue To: , Frank Rowand , Masahiro Yamada , Michal Marek , , CC: , Alexandre Torgue , , , , Ian Lepore Subject: [RFC PATCH v2 2/4] of: fdt: print dtb build information Date: Fri, 21 Feb 2020 17:12:15 +0100 Message-ID: <20200221161217.20069-3-alexandre.torgue@st.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200221161217.20069-1-alexandre.torgue@st.com> References: <20200221161217.20069-1-alexandre.torgue@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.49] X-ClientProxiedBy: SFHDAG1NODE2.st.com (10.75.127.2) 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=2020-02-21_05:2020-02-21,2020-02-21 signatures=0 Sender: linux-kbuild-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org This commit prints out DTB build information (build time, dts source version used, ...) if "Build-info" property exists in DTB root node. Signed-off-by: Alexandre Torgue diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index 2cdf64d2456f..aa5989039746 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -1224,9 +1224,18 @@ bool __init early_init_dt_scan(void *params) */ void __init unflatten_device_tree(void) { + const char *build_info; + unsigned long dt_root; + __unflatten_device_tree(initial_boot_params, NULL, &of_root, early_init_dt_alloc_memory_arch, false); + /* If available, provide dtb build information */ + dt_root = of_get_flat_dt_root(); + build_info = of_get_flat_dt_prop(dt_root, "build-info", NULL); + if (build_info) + pr_info("%s\n", build_info); + /* Get pointer to "/chosen" and "/aliases" nodes for use everywhere */ of_alias_scan(early_init_dt_alloc_memory_arch);