From patchwork Wed Jul 28 23:37:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tao Ren X-Patchwork-Id: 488057 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3D799C4338F for ; Wed, 28 Jul 2021 23:38:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 194D960F23 for ; Wed, 28 Jul 2021 23:38:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232654AbhG1XiL (ORCPT ); Wed, 28 Jul 2021 19:38:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51916 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232116AbhG1XiK (ORCPT ); Wed, 28 Jul 2021 19:38:10 -0400 Received: from mail-pl1-x631.google.com (mail-pl1-x631.google.com [IPv6:2607:f8b0:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3FCD7C061765; Wed, 28 Jul 2021 16:38:07 -0700 (PDT) Received: by mail-pl1-x631.google.com with SMTP id t3so2581482plg.9; Wed, 28 Jul 2021 16:38:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=TM1oWFJiQ55sCFQ7wpGHeNKBl5+PgVPl+xUxtGHeuDA=; b=I1042sBWKb+QVDCGOEqGBiFnCM3hVK/1s4yYAMaLBBxqae36UPOw+4Jb07vYE6R2dY uSDKJLjYAryvvfkAFzo2/Ah9h1X/VkKULWXFySS/2ZWA8xvU+SyNMZsnArfcHvjxhnDq V3J+sj4WAS7Gab7twrSEfc6cYAmZExoGPldDWMygvSF/Z704yUK8HHsirr3gUkVeST+N KBEltaVshKEf8x/hXIAYvrXFc6senSs5HB+42Hl6jaWckU9rZDD6mlNYh0Yp1vj5p5iW vwweQD9S25RgBxLStHcxDvcyeQZEVqE31Z0LZbR7pqEtLQrPY6tXrIpIsuv1LSMnJso9 ALUw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=TM1oWFJiQ55sCFQ7wpGHeNKBl5+PgVPl+xUxtGHeuDA=; b=c3XaTWxQWoiJnkj4sQrkVDTDVl5AaGiF0gSFWy0+3FeLfzNV004NhubOo+VqbVeUUf EmX7vxCxpwR2sES6LG34ea+idvdqCf9rbwCm7YaQFJsClAt8rw9/Uq3P/JUf9kdcKfv9 C13FEGfbg5iclYFKbG4do9uxF8u2NoUONGJ6zjQWA/NP0meUliULKah/ORwo2uwDx6gV /o0ItlrGmckinOh3qjzV+TZ/Tjw8BLxwUvj0K19gbtE3s5DZoW1AH9fFncLMj5bwnaTj 0k0qQk8uW9Ybcu4ahyRKvTe9hxK0qVjHUoINkUPmeHXB325NwmtQdtSP067YyUcyKDco VO1g== X-Gm-Message-State: AOAM532LIy6E8puBQrJbzY+otE/3mXB1zJkQKG7+ZwvHYKnU+wHT7GmV HbAheGMO+AT+faVEA3Wg6lg= X-Google-Smtp-Source: ABdhPJyUkypAjII61agd3+GcR+1EIgkC9yRJLVJ4SSY6U5CP784rDEdPD6XPamhPhWKFzVf/N20poQ== X-Received: by 2002:a17:90a:ce07:: with SMTP id f7mr2139372pju.81.1627515486795; Wed, 28 Jul 2021 16:38:06 -0700 (PDT) Received: from taoren-ubuntu-R90MNF91.thefacebook.com (c-73-252-146-110.hsd1.ca.comcast.net. [73.252.146.110]) by smtp.gmail.com with ESMTPSA id k37sm1038671pgm.84.2021.07.28.16.38.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Jul 2021 16:38:06 -0700 (PDT) From: rentao.bupt@gmail.com To: Rob Herring , Joel Stanley , Andrew Jeffery , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org, openbmc@lists.ozlabs.org, taoren@fb.com Cc: Tao Ren Subject: [PATCH 1/6] ARM: dts: Add Facebook BMC 128MB flash layout Date: Wed, 28 Jul 2021 16:37:50 -0700 Message-Id: <20210728233755.17963-2-rentao.bupt@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210728233755.17963-1-rentao.bupt@gmail.com> References: <20210728233755.17963-1-rentao.bupt@gmail.com> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Tao Ren This is the layout used by Facebook BMC systems. It describes the fixed flash layout of a 128MB mtd device. Signed-off-by: Tao Ren --- .../dts/facebook-bmc-flash-layout-128.dtsi | 60 +++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 arch/arm/boot/dts/facebook-bmc-flash-layout-128.dtsi diff --git a/arch/arm/boot/dts/facebook-bmc-flash-layout-128.dtsi b/arch/arm/boot/dts/facebook-bmc-flash-layout-128.dtsi new file mode 100644 index 000000000000..7f3652dea550 --- /dev/null +++ b/arch/arm/boot/dts/facebook-bmc-flash-layout-128.dtsi @@ -0,0 +1,60 @@ +// SPDX-License-Identifier: GPL-2.0+ +// Copyright (c) 2020 Facebook Inc. + +partitions { + compatible = "fixed-partitions"; + #address-cells = <1>; + #size-cells = <1>; + + /* + * u-boot partition: 896KB. + */ + u-boot@0 { + reg = <0x0 0xe0000>; + label = "u-boot"; + }; + + /* + * u-boot environment variables: 64KB. + */ + u-boot-env@e0000 { + reg = <0xe0000 0x10000>; + label = "env"; + }; + + /* + * image metadata partition (64KB), used by Facebook internal + * tools. + */ + image-meta@f0000 { + reg = <0xf0000 0x10000>; + label = "meta"; + }; + + /* + * FIT image: 119 MB. + */ + fit@100000 { + reg = <0x100000 0x7700000>; + label = "fit"; + }; + + /* + * "data0" partition (8MB) is used by Facebook BMC platforms as + * persistent data store. + */ + data0@7800000 { + reg = <0x7800000 0x800000>; + label = "data0"; + }; + + /* + * Although the master partition can be created by enabling + * MTD_PARTITIONED_MASTER option, below "flash0" partition is + * explicitly created to avoid breaking legacy applications. + */ + flash0@0 { + reg = <0x0 0x8000000>; + label = "flash0"; + }; +};