From patchwork Mon Jan 13 18:16:25 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandre TORGUE X-Patchwork-Id: 11330733 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 084CD109A for ; Mon, 13 Jan 2020 18:16:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D9FD4207E0 for ; Mon, 13 Jan 2020 18:16:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=st.com header.i=@st.com header.b="eCNF0WOg" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728898AbgAMSQ4 (ORCPT ); Mon, 13 Jan 2020 13:16:56 -0500 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:36658 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728923AbgAMSQy (ORCPT ); Mon, 13 Jan 2020 13:16:54 -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 00DICWgJ031805; Mon, 13 Jan 2020 19:16:39 +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=FqG6RRGJ2qKprjOk0E+7QuGlz/uGedPc3JymgcduaQ4=; b=eCNF0WOg9K4tDw9RTmicRxS5A+zMzFcTwmsTg39uB7uSO69KAzpbUDOQY9V2NWhWP5Ol SGYVwg1xbvb61jKy8H3etrl75FA4eB0J4A7BNXk2SEJIo6LeVv/2hUqoOkx1+rFlzlmU mdII2AFjLmKRAreYf0SMtHhqhMERibztr++oSjyIMsMFEe+UBWt9HMXw5AC8rP9uduHV T9LrMraYDU8dEtAKsAtaYJO+HEWX82zfvMvwYaVsZRxTlN/ID+ko4SWnrf8KbxOkIIKj yBL846byoTHXE1x8Y1KCQTUva8XCz3cQWr1CU7KkzTNpztUTTQ06blaHuQEyI7sIkjDs cQ== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 2xf77ashdc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 13 Jan 2020 19:16:39 +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 C402610003A; Mon, 13 Jan 2020 19:16:30 +0100 (CET) Received: from Webmail-eu.st.com (sfhdag3node2.st.com [10.75.127.8]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id B51772B774E; Mon, 13 Jan 2020 19:16:30 +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 19:16:30 +0100 From: Alexandre Torgue To: , Frank Rowand , Masahiro Yamada , Michal Marek , , CC: , Alexandre Torgue , , , Subject: [RFC PATCH 3/3] scripts: Use -B dtc option to generate dtb build information. Date: Mon, 13 Jan 2020 19:16:25 +0100 Message-ID: <20200113181625.3130-4-alexandre.torgue@st.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200113181625.3130-1-alexandre.torgue@st.com> References: <20200113181625.3130-1-alexandre.torgue@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.49] X-ClientProxiedBy: SFHDAG3NODE2.st.com (10.75.127.8) 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 This commit adds a new script to create a string in tmp file with some information (date, linux version, user). This file is then used by dtc with -B option to append dts file with a new property. During kernel boot it will then be possible to printout DTB build information (date, linux version used, user). Signed-off-by: Alexandre Torgue diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 3fa32f83b2d7..6a98eac1e56d 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -235,6 +235,7 @@ quiet_cmd_gzip = GZIP $@ # DTC # --------------------------------------------------------------------------- DTC ?= $(objtree)/scripts/dtc/dtc +DTB_GEN_INFO ?= $(objtree)/scripts/gen_dtb_build_info # Disable noisy checks by default ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),) @@ -275,11 +276,13 @@ $(obj)/%.dtb.S: $(obj)/%.dtb FORCE quiet_cmd_dtc = DTC $@ cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \ - $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ - $(DTC) -O $(2) -o $@ -b 0 \ + $(DTB_GEN_INFO) $(@).info ;\ + $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ + $(DTC) -O $(2) -o $@ -b 0 -B $(@).info\ $(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \ - -d $(depfile).dtc.tmp $(dtc-tmp) ; \ - cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) + -d $(depfile).dtc.tmp $(dtc-tmp) ; \ + rm $(@).info ; \ + cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE $(call if_changed_dep,dtc,dtb) diff --git a/scripts/gen_dtb_build_info b/scripts/gen_dtb_build_info new file mode 100755 index 000000000000..30cf7506b9d5 --- /dev/null +++ b/scripts/gen_dtb_build_info @@ -0,0 +1,11 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 + +DTB_TARGET=$@ +COMPILE_BY=$(whoami | sed 's/\\/\\\\/') + +touch $DTB_TARGET + +{ + echo From Linux $KERNELRELEASE by $COMPILE_BY the $(date). +} > $DTB_TARGET