From patchwork Tue Jan 30 00:44:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephen Boyd X-Patchwork-Id: 13536610 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4188EC47DB3 for ; Tue, 30 Jan 2024 00:45:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=XysWGpeUSMPOeHsqDEFjUmpd1M8ThZ8oVrED10PqoSU=; b=xtcKl1j3y05mg3 TXfiWCkFmGrb3uxd7xZyM3W6jgJHOTSLZuUDTaHiyl0YQ5qTaaBHvyUeg/SbEr7Av075oIo9xNgsX h94j434mRsUBoFJONIgTgXFBnqOOa0LjVHcgH8BTAhQLsW02kxYGng9RTx8N9hSOqwCJe0VgTi+ht s5kZTHULWu3h+ynkkUy3Ikhl75eDys2fUPbb77SFXVGXbneVSQpxAOkmYixFRRWmvASXfrImzX94E icBag9DigZYQeFWsqvXofIgYnioMmfITV6dhjHHncb5XHNdw8SpHjtBvt2ZrhXVcM7oaBC88347fr fOcTuS0ECcBTxqCirv+Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rUcFY-0000000EjRY-0Asb; Tue, 30 Jan 2024 00:45:16 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rUcFU-0000000EjNo-1OVI; Tue, 30 Jan 2024 00:45:13 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 04F846238C; Tue, 30 Jan 2024 00:45:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id ABDE5C433C7; Tue, 30 Jan 2024 00:45:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706575510; bh=YC1N2oEpGjCqkxBB/gMBX4M8pPLAjOZSUACvgMPf924=; h=From:To:Cc:Subject:Date:From; b=EsVITYj953c4uFFFHZ/frw0EiUtZbrrMp+OVQxWbuOaE0N+CeP+uTVtvg0d1HkPbE dx1xjZuEYidzlqTiWFRGj+SkA/+U6udg9PcDME4tGk23K49tCxu8OA9a+i/MJUELpx zfgr06iNdTvvKa6poZRHyUzhaW+YgG3/JsUivUtxPgA0NlbZAhvfIincnmBqraRYq+ Ym3kNoML2p6zAT5oQeRN8l7wcJqsH6fONUx2p6UMhh+ytFbKacXcsGSL9RW1n+KEnP 3q3EOAXhUglqEegusNEH88D8ltv1cC/T02mXvBhkKWFf4BK6DTvW1m58/9L/m3VxHY ryyDMU5hgXARw== From: Stephen Boyd To: Rob Herring Cc: linux-kernel@vger.kernel.org, patches@lists.linux.dev, linux-um@lists.infradead.org, linux-arm-kernel@lists.infradead.org, kunit-dev@googlegroups.com, linux-kselftest@vger.kernel.org, devicetree@vger.kernel.org, Anton Ivanov , Brendan Higgins , Catalin Marinas , David Gow , Frank Rowand , Johannes Berg , Richard Weinberger , Will Deacon , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Saurabh Sengar Subject: [PATCH v2 0/7] of: populate of_root node if bootloader doesn't Date: Mon, 29 Jan 2024 16:44:59 -0800 Message-ID: <20240130004508.1700335-1-sboyd@kernel.org> X-Mailer: git-send-email 2.43.0.429.g432eaa2c6b-goog MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240129_164512_485101_A638DB49 X-CRM114-Status: GOOD ( 14.24 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Arch maintainers, please ack/review patches. This is a resend of a series from Frank last year[1]. I worked in Rob's review comments to unconditionally call unflatten_device_tree() and fixup/audit calls to of_have_populated_dt() so that behavior doesn't change. I need this series so I can add DT based tests in the clk framework. Either I can merge it through the clk tree once everyone is happy, or Rob can merge it through the DT tree and provide some branch so I can base clk patches on it. Changes from Frank's series[1]: * Add a DTB loaded kunit test * Make of_have_populated_dt() return false if the DTB isn't from the bootloader * Architecture calls made unconditional so that a root node is always made Changes from v1 (https://lore.kernel.org/r/20240112200750.4062441-1-sboyd@kernel.org): * x86 patch included * arm64 knocks out initial dtb if acpi is in use * keep Kconfig hidden but def_bool enabled otherwise Frank Rowand (2): of: Create of_root if no dtb provided by firmware of: unittest: treat missing of_root as error instead of fixing up Stephen Boyd (5): arm64: Unconditionally call unflatten_device_tree() um: Unconditionally call unflatten_device_tree() x86/of: Unconditionally call unflatten_and_copy_device_tree() of: Always unflatten in unflatten_and_copy_device_tree() of: Add KUnit test to confirm DTB is loaded arch/arm64/kernel/setup.c | 7 +++-- arch/um/kernel/dtb.c | 14 +++++----- arch/x86/kernel/devicetree.c | 24 +++++++++-------- drivers/of/.kunitconfig | 3 +++ drivers/of/Kconfig | 11 +++++++- drivers/of/Makefile | 4 ++- drivers/of/empty_root.dts | 6 +++++ drivers/of/fdt.c | 52 +++++++++++++++++++++++++----------- drivers/of/of_test.c | 48 +++++++++++++++++++++++++++++++++ drivers/of/platform.c | 3 --- drivers/of/unittest.c | 16 +++-------- include/linux/of.h | 25 ++++++++++------- 12 files changed, 151 insertions(+), 62 deletions(-) create mode 100644 drivers/of/.kunitconfig create mode 100644 drivers/of/empty_root.dts create mode 100644 drivers/of/of_test.c Cc: Anton Ivanov Cc: Brendan Higgins Cc: Catalin Marinas Cc: David Gow Cc: Frank Rowand Cc: Johannes Berg Cc: Richard Weinberger Cc: Rob Herring Cc: Will Deacon Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Dave Hansen Cc: Cc: "H. Peter Anvin" Cc: Saurabh Sengar [1] https://lore.kernel.org/r/20230317053415.2254616-1-frowand.list@gmail.com base-commit: 0dd3ee31125508cd67f7e7172247f05b7fd1753a