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                        <div class=" wh_topic_content body "><main role="main"><article class="- topic/topic concept/concept topic concept" role="article" aria-labelledby="ariaid-title1"><span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/boot/image-file-intro.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">Image 文件描述</h1><div class="date inPage">25 Dec 2024</div><div style="color: gray;">
                    Read time: 2 minute(s)
                </div><div class="- topic/body concept/conbody body conbody"><p class="- topic/p p" data-ofbid="d53495e22__20250121171519">“image” 对象描述要生成的镜像文件的基本信息，以及要打包的数据。包含几个部分：</p><ul class="- topic/ul ul" id="image__ul_ahx_3vg_bzb" data-ofbid="image__ul_ahx_3vg_bzb"><li class="- topic/li li" data-ofbid="d53495e25__20250121171519">
                <p class="- topic/p p" data-ofbid="d53495e27__20250121171519"><span class="+ topic/keyword pr-d/parmname keyword parmname">“info”</span></p>
            </li><li class="- topic/li li" data-ofbid="d53495e31__20250121171519">
                <p class="- topic/p p" data-ofbid="d53495e33__20250121171519"><span class="+ topic/keyword pr-d/parmname keyword parmname">“updater”</span></p>
            </li><li class="- topic/li li" data-ofbid="d53495e37__20250121171519">
                <p class="- topic/p p" data-ofbid="d53495e39__20250121171519"><span class="+ topic/keyword pr-d/parmname keyword parmname">“target”</span></p>
            </li></ul><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="image__codeblock_bs3_ds2_f1c" data-ofbid="image__codeblock_bs3_ds2_f1c"><span class="hl-string">"image"</span>: {
    <span class="hl-string">"info"</span>: {
        ...
    }
    <span class="hl-string">"updater"</span>: {
        ...
    }
    <span class="hl-string">"target"</span>: {
        ...
    }
}</pre><section class="- topic/section section" id="image__section_chx_3vg_bzb" data-ofbid="image__section_chx_3vg_bzb"><h2 class="- topic/title title sectiontitle">Info 数据描述</h2>
            
            <div class="- topic/p p" data-ofbid="d53495e50__20250121171519">“info” 对象用于描述该烧录镜像的基本信息，这些信息用于生成 Image Header。以 <span class="+ topic/ph sw-d/filepath ph filepath">demo128_nand</span>
                为例：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="image__codeblock_spinand_page_size" data-ofbid="image__codeblock_spinand_page_size"><span class="hl-string">"info"</span>: { <em class="hl-comment">// Header information about image</em>
    <span class="hl-string">"platform"</span>: <span class="hl-string">"d211"</span>,
    <span class="hl-string">"product"</span>: <span class="hl-string">"demo128_nand"</span>,
    <span class="hl-string">"version"</span>: <span class="hl-string">"1.0.0"</span>,
    <span class="hl-string">"media"</span>: {
        <span class="hl-string">"type"</span>: <span class="hl-string">"spi-nand"</span>,
        <span class="hl-string">"device_id"</span>: <span class="hl-number">0</span>,
        <span class="hl-string">"array_organization"</span>: [
        <em class="hl-comment">//      { "page": "4k", "block": "256k" },</em>
                { <span class="hl-string">"page"</span>: <span class="hl-string">"2k"</span>, <span class="hl-string">"block"</span>: <span class="hl-string">"128k"</span> },
        ],
    }
},</pre></div>
            <div class="table-container"><table class="- topic/table table frame-all" id="image__table_ehx_3vg_bzb" data-ofbid="image__table_ehx_3vg_bzb" data-cols="2"><caption></caption><colgroup><col style="width:22.522522522522525%"/><col style="width:77.47747747747749%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-0 rowsep-0" id="image__table_ehx_3vg_bzb__entry__1">info 属性</th><th class="- topic/entry entry colsep-0 rowsep-0" id="image__table_ehx_3vg_bzb__entry__2">说明</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_ehx_3vg_bzb__entry__1">“platform”</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_ehx_3vg_bzb__entry__2">字符串，当前项目所使用的 SoC 的名字</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_ehx_3vg_bzb__entry__1">“product”</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_ehx_3vg_bzb__entry__2">字符串，产品名字、产品型号</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_ehx_3vg_bzb__entry__1">“version”</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_ehx_3vg_bzb__entry__2">字符串，按照 “x.y.z” 格式提供的版本号，其中 x,y,z 都是数字</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_ehx_3vg_bzb__entry__1">“media”</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_ehx_3vg_bzb__entry__2">对象，描述存储设备</td></tr></tbody></table></div>
            <div class="table-container"><table class="- topic/table table frame-all" id="image__table_fhx_3vg_bzb" data-ofbid="image__table_fhx_3vg_bzb" data-cols="2"><caption></caption><colgroup><col style="width:23.52941176470588%"/><col style="width:76.47058823529412%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-0 rowsep-0" id="image__table_fhx_3vg_bzb__entry__1">media 属性</th><th class="- topic/entry entry colsep-0 rowsep-0" id="image__table_fhx_3vg_bzb__entry__2">说明</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_fhx_3vg_bzb__entry__1">“type”</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_fhx_3vg_bzb__entry__2">字符串，取值可参考<a class="- topic/xref xref" href="../linux/burn-image-partition-table.html">分区表描述</a></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_fhx_3vg_bzb__entry__1">“device_id”</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_fhx_3vg_bzb__entry__2">整数，要烧录的存储设备在 U-Boot 中的索引。</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_fhx_3vg_bzb__entry__1">“array_organization”</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_fhx_3vg_bzb__entry__2">对象，当存储设备为 “spi-nand” 时使用，描述存储单元的排列结构</td></tr></tbody></table></div>
            <div class="table-container"><table class="- topic/table table frame-all" id="image__table_ghx_3vg_bzb" data-ofbid="image__table_ghx_3vg_bzb" data-cols="2"><caption></caption><colgroup><col style="width:22.98850574712644%"/><col style="width:77.01149425287358%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-0 rowsep-0" id="image__table_ghx_3vg_bzb__entry__1">array_organization 属性</th><th class="- topic/entry entry colsep-0 rowsep-0" id="image__table_ghx_3vg_bzb__entry__2">说明</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_ghx_3vg_bzb__entry__1">“page”</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_ghx_3vg_bzb__entry__2">当前 SPI NAND 的 Page 大小，取值 “2K”, “4K”,</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_ghx_3vg_bzb__entry__1">“block”</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_ghx_3vg_bzb__entry__2">当前 SPI NAND 的 Block 大小, 取值 “128K”, “256K”</td></tr></tbody></table></div>
        </section><section class="- topic/section section" id="image__section_hhx_3vg_bzb" data-ofbid="image__section_hhx_3vg_bzb"><h2 class="- topic/title title sectiontitle">Updater 数据描述</h2>
            
            <p class="- topic/p p" data-ofbid="d53495e147__20250121171519">Updater 是指进行 USB 刷机或者进行 SD 卡刷机时需要运行的刷机程序，该程序通常由 SPL/U-Boot 实现， 可能与正常启动时所运行的
                SPL/U-Boot 相同，也可能不同，因此需要单独列出。</p>
            <p class="- topic/p p" data-ofbid="d53495e150__20250121171519">“updater” 对象描述在刷机过程中需要使用到的组件数据，其包含多个子对象，每个子对象即为一个组件 。 其中下列的组件是已知且必要的。</p>
            <div class="table-container"><table class="- topic/table table frame-all" id="image__table_ihx_3vg_bzb" data-ofbid="image__table_ihx_3vg_bzb" data-cols="2"><caption></caption><colgroup><col style="width:23.52941176470588%"/><col style="width:76.47058823529412%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-0 rowsep-0" id="image__table_ihx_3vg_bzb__entry__1">组件名称</th><th class="- topic/entry entry colsep-0 rowsep-0" id="image__table_ihx_3vg_bzb__entry__2">说明</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_ihx_3vg_bzb__entry__1">“spl”</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_ihx_3vg_bzb__entry__2">第一级引导程序</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_ihx_3vg_bzb__entry__1">“”</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_ihx_3vg_bzb__entry__2">第二级引导程序，同时也是刷机程序</td></tr></tbody></table></div>
            <p class="- topic/p p" data-ofbid="d53495e175__20250121171519">上述的组件名字并非固定，可根据项目的需要修改、增加或者删除。</p>
            <p class="- topic/p p" data-ofbid="d53495e179__20250121171519">Updater 中的组件对象都有以下的配置字段：</p>
            <div class="table-container"><table class="- topic/table table frame-all" id="image__table_jhx_3vg_bzb" data-ofbid="image__table_jhx_3vg_bzb" data-cols="2"><caption></caption><colgroup><col style="width:21.69197396963124%"/><col style="width:78.30802603036877%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-0 rowsep-0" id="image__table_jhx_3vg_bzb__entry__1">Updater 组件属性</th><th class="- topic/entry entry colsep-0 rowsep-0" id="image__table_jhx_3vg_bzb__entry__2">说明</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_jhx_3vg_bzb__entry__1">“file”</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_jhx_3vg_bzb__entry__2">指定该组件的数据来源文件</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_jhx_3vg_bzb__entry__1">“ram”</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_jhx_3vg_bzb__entry__2">USB 刷机时，指定该文件下载的内存地址</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_jhx_3vg_bzb__entry__1">“attr”</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_jhx_3vg_bzb__entry__2">该数据对象的属性，可选的内容有:<ul class="- topic/ul ul" id="image__ul_yqj_dkr_xbc" data-ofbid="image__ul_yqj_dkr_xbc"><li class="- topic/li li" data-ofbid="d53495e209__20250121171519">- “required” : 该数据是必需的，如果指定文件不存在，则生成镜像文件出错。</li><li class="- topic/li li" data-ofbid="d53495e211__20250121171519">- “run” : 该数据是可执行文件，USB 升级时，该数据下载完成之后会被执行。</li></ul></td></tr></tbody></table></div>
            <div class="- topic/note note important note_important" id="image__note_xy2_qvg_bzb" data-ofbid="image__note_xy2_qvg_bzb"><span class="note__title">重要：</span> “updater” 中组件对象的顺序很重要。<p class="- topic/p p" data-ofbid="d53495e216__20250121171519">在 USB 升级的过程中，组件数据传输和执行的顺序即为 “updater” 中组件数据出现的顺序，
                    因此如果组件数据之间有顺序依赖关系，需要按照正确的顺序排布。</p></div>
        </section><section class="- topic/section section" id="image__section_khx_3vg_bzb" data-ofbid="image__section_khx_3vg_bzb"><h2 class="- topic/title title sectiontitle">Target 数据描述</h2>
            
            <p class="- topic/p p" data-ofbid="d53495e224__20250121171519">“target” 描述要烧录到设备存储介质上的组件 。与 “updater” 中的组件一样，”target”
                中出现的组件根据实际需要进行添加，组件的名字也可自行定义。</p>
            <p class="- topic/p p" data-ofbid="d53495e227__20250121171519">“target” 中的组件，都有下面的配置字段：</p>
            <div class="table-container"><table class="- topic/table table frame-all" id="image__table_lhx_3vg_bzb" data-ofbid="image__table_lhx_3vg_bzb" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 1</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">Target 组件属性</span></caption><colgroup><col style="width:17.064846416382252%"/><col style="width:82.93515358361775%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-0 rowsep-0" id="image__table_lhx_3vg_bzb__entry__1">属性名</th><th class="- topic/entry entry colsep-0 rowsep-0" id="image__table_lhx_3vg_bzb__entry__2">说明</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_lhx_3vg_bzb__entry__1">“file”</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_lhx_3vg_bzb__entry__2">指定该组件的数据来源文件</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_lhx_3vg_bzb__entry__1">“part”</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_lhx_3vg_bzb__entry__2">指定该组件被烧录的分区，分区名字通过字符串数组的形式提供。</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_lhx_3vg_bzb__entry__1">“attr”</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="image__table_lhx_3vg_bzb__entry__2">该数据对象的属性，可选的内容有:<ul class="- topic/ul ul" id="image__ul_kvv_dtm_q1c" data-ofbid="image__ul_kvv_dtm_q1c"><li class="- topic/li li" data-ofbid="d53495e259__20250121171519">“required” : 该组件数据是必需的，如果指定文件不存在，则生成镜像文件出错。</li><li class="- topic/li li" data-ofbid="d53495e261__20250121171519">“optional” : 该组件数据不是必需的，如果指定文件不存在，则在生成镜像文件时忽略该数据对象。</li><li class="- topic/li li" data-ofbid="d53495e263__20250121171519">“burn” : 该组件数据是需要烧录到指定分区当中。</li><li class="- topic/li li" data-ofbid="d53495e265__20250121171519">“mtd” : 表示该组件要烧录的设备是 MTD 设备。</li><li class="- topic/li li" data-ofbid="d53495e267__20250121171519">“ubi” : 表示该组件要烧录的设备是 UBI 设备。</li><li class="- topic/li li" data-ofbid="d53495e269__20250121171519">“block” : 表示该组件要烧录的设备是块设备。</li></ul></td></tr></tbody></table></div>
            <div class="- topic/note note important note_important" id="image__note_w3b_pvg_bzb" data-ofbid="image__note_w3b_pvg_bzb"><span class="note__title">重要：</span> “target” 中组件对象的顺序<p class="- topic/p p" data-ofbid="d53495e274__20250121171519">在 USB
                    升级的过程中，组件数据传输和烧录的顺序即为 “target” 中组件数据出现的顺序。</p></div>
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