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 33432CD612F for ; Mon, 9 Oct 2023 20:10:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1378582AbjJIUK3 (ORCPT ); Mon, 9 Oct 2023 16:10:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35286 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1378540AbjJIUKV (ORCPT ); Mon, 9 Oct 2023 16:10:21 -0400 Received: from mail-io1-xd2a.google.com (mail-io1-xd2a.google.com [IPv6:2607:f8b0:4864:20::d2a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 10B53AF for ; Mon, 9 Oct 2023 13:10:17 -0700 (PDT) Received: by mail-io1-xd2a.google.com with SMTP id ca18e2360f4ac-79fe6da0049so206229939f.1 for ; Mon, 09 Oct 2023 13:10:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1696882216; x=1697487016; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=qDwYllgCxpOVaDPdnj1bCUl1esI4hxS9Uu4gTGnxNxA=; b=YQw0p4m/ETeVFreg/NrLrJKpjnhYlAdPAekPGKVkS0iPtlGBQUmmmT/+HD8ol8HDVY zehNXaWEKgFNx/waGK2nUGFX3tve6ENKRWfGMhG+sXhCeiQaaDgdr5jUxEjUYqbATD0c RbDkszf+H2d2Y5WqWKvBWmhIDyHQ+Xa+dpU2w= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696882216; x=1697487016; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=qDwYllgCxpOVaDPdnj1bCUl1esI4hxS9Uu4gTGnxNxA=; b=gdRCjVu0qZB7FhbD+l58u4EaQ8po5kuWOTullouaLxLFwba30Pu3B70PeRARK9dlv/ AlTOPXvxNHbTKqO21oLkxJlEociMmqiCam1PZDcDm2B1SwkHo+cacEzmO8mxsQk16zp0 JRVAsaKTFlBQsIU2dxpuewk4hPBw/xV8g3QKHaY5ptl6NF0iNrTcz6XO2hn5UMkX4xm5 hFVE+t98Mq69duFot0c4qnfKkXstEWspHulg1u6eZcvTByALwO6xBa/aHVTEcQ8Em9vt DxGkk+FFmQi86HohUpGpDH2SqMQj4ODhSGbcZZkuJpE6lHYlJSPxhRm46kbSWa+aEqBZ I5cA== X-Gm-Message-State: AOJu0YyuQeOJhUk/mxFaW6KQFVMoGo2W3tTTVZzq2gZtK5CCu0WfmUVB /ep0uaH6s27dUF3L1yi5SE/CGg== X-Google-Smtp-Source: AGHT+IHjoREuIigG/5nvr4t3n4+H6A6edPXnoWQ1VFc16alunnV8mOAw+XYEKhJX2GRZPWJattFpfw== X-Received: by 2002:a6b:651a:0:b0:780:ce72:ac55 with SMTP id z26-20020a6b651a000000b00780ce72ac55mr20002656iob.10.1696882216398; Mon, 09 Oct 2023 13:10:16 -0700 (PDT) Received: from kea.bld.corp.google.com ([2620:15c:183:200:138c:cf57:c18d:20f5]) by smtp.gmail.com with ESMTPSA id q21-20020a02a315000000b0042b2df337ccsm2215294jai.76.2023.10.09.13.10.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Oct 2023 13:10:16 -0700 (PDT) From: Simon Glass To: devicetree@vger.kernel.org Cc: U-Boot Mailing List , linux-mtd@lists.infradead.org, Michael Walle , Tom Rini , Rob Herring , Miquel Raynal , Simon Glass , Conor Dooley , Krzysztof Kozlowski , Richard Weinberger , Rob Herring , Vignesh Raghavendra , linux-kernel@vger.kernel.org Subject: [PATCH v3 3/3] dt-bindings: mtd: binman-partitions: Add alignment properties Date: Mon, 9 Oct 2023 14:10:01 -0600 Message-ID: <20231009201005.1964794-3-sjg@chromium.org> X-Mailer: git-send-email 2.42.0.609.gbb76f46606-goog In-Reply-To: <20231009201005.1964794-1-sjg@chromium.org> References: <20231009201005.1964794-1-sjg@chromium.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add three properties for controlling alignment of partitions, aka 'entries' in binman. For now there is no explicit mention of hierarchy, so a 'section' is just the 'binman' node. These new properties are inputs to the packaging process, but are also needed if the firmware is repacked, to ensure that alignment constraints are not violated. Therefore they are provided as part of the schema. Signed-off-by: Simon Glass --- (no changes since v2) Changes in v2: - Fix 'a' typo in commit message .../mtd/partitions/binman-partition.yaml | 39 +++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/Documentation/devicetree/bindings/mtd/partitions/binman-partition.yaml b/Documentation/devicetree/bindings/mtd/partitions/binman-partition.yaml index 754f804524a5..350014a93da4 100644 --- a/Documentation/devicetree/bindings/mtd/partitions/binman-partition.yaml +++ b/Documentation/devicetree/bindings/mtd/partitions/binman-partition.yaml @@ -27,6 +27,42 @@ properties: - u-boot # u-boot.bin from U-Boot projec6t - atf-bl31 # bl31.bin or bl31.elf from TF-A project + align: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + This sets the alignment of the entry. The entry offset is adjusted + so that the entry starts on an aligned boundary within the containing + section or image. For example ‘align = <16>’ means that the entry will + start on a 16-byte boundary. This may mean that padding is added before + the entry. The padding is part of the containing section but is not + included in the entry, meaning that an empty space may be created before + the entry starts. Alignment should be a power of 2. If ‘align’ is not + provided, no alignment is performed. + + align-size: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + This sets the alignment of the entry size. For example, to ensure + that the size of an entry is a multiple of 64 bytes, set this to 64. + While this does not affect the contents of the entry within binman + itself (the padding is performed only when its parent section is + assembled), the end result is that the entry ends with the padding + bytes, so may grow. If ‘align-size’ is not provided, no alignment is + performed. + + align-end: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + This sets the alignment of the end of an entry with respect to the + containing section. Some entries require that they end on an alignment + boundary, regardless of where they start. This does not move the start + of the entry, so the contents of the entry will still start at the + beginning. But there may be padding at the end. While this does not + affect the contents of the entry within binman itself (the padding is + performed only when its parent section is assembled), the end result is + that the entry ends with the padding bytes, so may grow. If ‘align-end’ + is not provided, no alignment is performed. + additionalProperties: false examples: @@ -39,10 +75,13 @@ examples: partition@100000 { compatible = "u-boot"; reg = <0x100000 0xf00000>; + align-size = <0x1000>; + align-end = <0x10000>; }; partition@200000 { compatible = "atf-bl31"; reg = <0x200000 0x100000>; + align = <0x4000>; }; }; -- 2.42.0.609.gbb76f46606-goog