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 phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0EB69ECAAD5 for ; Sun, 28 Aug 2022 15:19:42 +0000 (UTC) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 7DF2883FCA; Sun, 28 Aug 2022 17:19:40 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="jqJPbJvN"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 7EFB9840D2; Sun, 28 Aug 2022 17:19:39 +0200 (CEST) Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 16B4083D01 for ; Sun, 28 Aug 2022 17:19:37 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=kabel@kernel.org 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 19B7E61058; Sun, 28 Aug 2022 15:19:35 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 77652C433C1; Sun, 28 Aug 2022 15:19:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1661699974; bh=4aYl3DNObGov/t4vr5EyPBdIDBtZrSH6c/ew+JDZfGk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jqJPbJvN40u8T6oblY5ciPleBvQWQvrIsoRV4SRH92L/qxg93HDgxR/tpDnaqIxwd hBZV+/NhVZFOe+P0JacEUFwptGp6DPbmYjDQwmGPFOEApzmOHVV6uytei+RtwyTDy6 xccUpobu1F2ao7uo6eT21WVds//GE2JR1Q2zKSnIybrlvbNFN5Paufz24xloBLL5TW +Hj3XLAna2TVBB6wM8vXUTw50O1pYupvGeKC2pkOnJl94P8yiu1SX3HG1GE/0itgKn hFIQW90eDvC4RxPUf+lmHM0jpvcNNKMFjFjPGdQvu3798deit3irGXeJS/tlS9r93k XTlpRyrN7Hnsw== From: =?UTF-8?q?Marek=20Beh=C3=BAn?= To: Simon Glass , =?UTF-8?q?Pali=20Roh=C3=A1r?= Cc: u-boot@lists.denx.de, =?UTF-8?q?Marek=20Beh=C3=BAn?= Subject: [PATCH v2] board_f: Add support for CONFIG_OF_BOARD_FIXUP for XIP images Date: Sun, 28 Aug 2022 17:19:29 +0200 Message-Id: <20220828151929.32588-1-kabel@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220827181220.471-1-pali@kernel.org> References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.6 at phobos.denx.de X-Virus-Status: Clean From: Pali Rohár When U-Boot is running from flash memory (execute in place) then gd->fdt_blob before relocation points to read-only flash memory. So U-Boot calls board_fix_fdt() with read-only gd->fdt_blob pointer which cause immediate CPU crash when callback is trying to modify gd->fdt_blob. Fix this issue by introducing a new config option OF_DTB_READONLY_BEFORE_RELOC which moves fix_fdt callback after the reloc_fdt callback. This makes CONFIG_OF_BOARD_FIXUP working also if U-Boot before relocation is not running from read/write (S)RAM memory. This is required for mpc85xx boards when booting from flash NOR. Signed-off-by: Pali Rohár Signed-off-by: Marek Behún --- Changes since v1: - just changed the new Kconfig option name and associated help string --- common/board_f.c | 8 +++++++- dts/Kconfig | 6 ++++++ 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/common/board_f.c b/common/board_f.c index 18e2246733..35fb4a0753 100644 --- a/common/board_f.c +++ b/common/board_f.c @@ -911,7 +911,7 @@ static const init_fnc_t init_sequence_f[] = { * - board info struct */ setup_dest_addr, -#ifdef CONFIG_OF_BOARD_FIXUP +#if defined(CONFIG_OF_BOARD_FIXUP) && !defined(CONFIG_OF_DTB_READONLY_BEFORE_RELOC) fix_fdt, #endif #ifdef CONFIG_PRAM @@ -926,6 +926,10 @@ static const init_fnc_t init_sequence_f[] = { reserve_board, reserve_global_data, reserve_fdt, +#if defined(CONFIG_OF_BOARD_FIXUP) && defined(CONFIG_OF_DTB_READONLY_BEFORE_RELOC) + reloc_fdt, + fix_fdt, +#endif reserve_bootstage, reserve_bloblist, reserve_arch, @@ -936,7 +940,9 @@ static const init_fnc_t init_sequence_f[] = { setup_bdinfo, display_new_sp, INIT_FUNC_WATCHDOG_RESET +#if !defined(CONFIG_OF_BOARD_FIXUP) || !defined(CONFIG_OF_DTB_READONLY_BEFORE_RELOC) reloc_fdt, +#endif reloc_bootstage, reloc_bloblist, setup_reloc, diff --git a/dts/Kconfig b/dts/Kconfig index bc5f22029f..29e5248b15 100644 --- a/dts/Kconfig +++ b/dts/Kconfig @@ -105,6 +105,12 @@ config OF_EMBED endchoice +config OF_DTB_READONLY_BEFORE_RELOC + bool "Initial DTB (before relocation) for DT control is read-only" + help + If initial (before relocation) DTB for DT control is read-only, + (e.g. points to memory-mapped flash memory), set this option. + config OF_BOARD bool "Provided by the board (e.g a previous loader) at runtime" default y if SANDBOX || OF_HAS_PRIOR_STAGE -- 2.35.1