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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1737EC433EF for ; Sat, 26 Mar 2022 23:37:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229564AbiCZXih (ORCPT ); Sat, 26 Mar 2022 19:38:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47998 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229502AbiCZXig (ORCPT ); Sat, 26 Mar 2022 19:38:36 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6226C62BEF; Sat, 26 Mar 2022 16:36:59 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E216160E9E; Sat, 26 Mar 2022 23:36:57 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AA66DC340E8; Sat, 26 Mar 2022 23:36:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1648337817; bh=bYtxEVhBwsLpx4G9gMfhBrvUJ4SEy8p440r4DjnWoPc=; h=From:To:Cc:Subject:Date:From; b=DMJwuMiMwO+6+gn5k3eOlUkWG0/tO8+NQwPE4P7gvPXvVE7cJytO4K4Sfn7MpGRw4 7lXsM5cI9FFKIehm8C/JdaLCwohATcQGs46iCWTPBQfvtUw/Ubyw2efSFEurnn2Fou y61xoRC01rYJuOPRUm3RXIA5K86P0ByYg/DtJDR8FotBUg8ZVfwEHbESSUxzziH/ib jRTCCjiNIMyr02FFYMtKKm3+MB/VJRUmFCzzpA1G4f/pr9UM/as7rX/yhVG6PVMIyu oxcADMy/iktMy8vNRvYRRN5uRd9qZw+svyhL6AtFN/nncjf/RVq/9ekr0+ztXAFQ5D w6e43lg15nUkw== From: Masami Hiramatsu To: Steven Rostedt Cc: Masami Hiramatsu , Padmanabha Srinivasaiah , LKML , Jonathan Corbet , linux-doc@vger.kernel.org, Randy Dunlap Subject: [PATCH v4 0/3] bootconfig: Support embedding a bootconfig in kernel for non initrd boot Date: Sun, 27 Mar 2022 08:36:53 +0900 Message-Id: <164833781316.2573528.8385063821185577976.stgit@devnote2> X-Mailer: git-send-email 2.25.1 User-Agent: StGit/0.19 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org Hi, Here are the 4th version of the patchset to enable kernel embedded bootconfig for non-initrd kernel boot environment. I've fixed Makefile to determine update by checking the contents of embedding bootconfig file. Thanks Masahiro! You can embed a bootconfig file into the kernel as a default bootconfig, which will be used if there is no initrd or no bootconfig is attached to initrd. This needs 2 options: CONFIG_EMBED_BOOT_CONFIG=y and set the file path to CONFIG_EMBED_BOOT_CONFIG_FILE. Even if you embed the bootconfig file to the kernel, it will not be enabled unless you pass "bootconfig" kernel command line option at boot. Moreover, since this is just a "default" bootconfig, you can override it with a new bootconfig if you attach another bootconfig to the initrd (if possible). CONFIG_EMBED_BOOT_CONFIG_FILE can take both absolute and relative path, but to simplify and make it independent from the build environment, I recommend you to use an absolute path for that. This is requested by Padmanabha at the below thread; https://lore.kernel.org/all/20220307184011.GA2570@pswork/T/#u Thank you, --- Masami Hiramatsu (3): bootconfig: Check the checksum before removing the bootconfig from initrd bootconfig: Support embedding a bootconfig file in kernel docs: bootconfig: Add how to embed the bootconfig into kernel Documentation/admin-guide/bootconfig.rst | 30 ++++++++++++++++++++++++++--- include/linux/bootconfig.h | 10 ++++++++++ init/Kconfig | 21 ++++++++++++++++++++ init/main.c | 31 +++++++++++++++--------------- lib/.gitignore | 1 + lib/Makefile | 10 ++++++++++ lib/bootconfig.c | 23 ++++++++++++++++++++++ 7 files changed, 108 insertions(+), 18 deletions(-) -- Masami Hiramatsu (Linaro)