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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">
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<span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" href="http://aicdocco/taskstopics/sdk/linux/burn-image-partition-table.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">分区表描述</h1>
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<div class="date inPage">16 May 2025</div><div style="color: gray;">
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Read time: 1 minute(s)
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<div class="- topic/body concept/conbody body conbody">
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<p class="- topic/p p" id="concept_mtx_tk3_pzb__p_hlr_sr2_f1c" data-ofbid="concept_mtx_tk3_pzb__p_hlr_sr2_f1c"><span class="+ topic/ph sw-d/filepath ph filepath">image_cfg.json</span> 文件的开头描述的是当前要烧录的目标存储设备，以及在设备上的分区配置，以
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<span class="+ topic/keyword pr-d/parmname keyword parmname">spi-nand</span> 为例：</p>
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<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="concept_mtx_tk3_pzb__codeblock_fvp_3r2_f1c" data-ofbid="concept_mtx_tk3_pzb__codeblock_fvp_3r2_f1c"><span class="hl-string">"spi-nand"</span>: { <em class="hl-comment">// Device, The name should be the same with string in image:info:media:type</em>
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<span class="hl-string">"size"</span>: <span class="hl-string">"128m"</span>, <em class="hl-comment">// Size of SPI NAND</em>
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<span class="hl-string">"partitions"</span>: {
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<span class="hl-string">"spl"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"1m"</span> },
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<span class="hl-string">"os"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"2m"</span> },
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<span class="hl-string">"rodata"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"4m"</span> },
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<span class="hl-string">"data"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"28m"</span> },
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},
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},</pre>
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<p class="- topic/p p" data-ofbid="d106974e44__20250519091516">该示例中各字段具体描述如下表所示：</p>
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<div class="table-container"><table class="- topic/table table frame-all" id="concept_mtx_tk3_pzb__table_p1q_b2c_jzb" data-ofbid="concept_mtx_tk3_pzb__table_p1q_b2c_jzb" data-cols="3"><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">分区表描述</span></caption><colgroup><col style="width:18.76955161626695%"/><col style="width:10.427528675703858%"/><col style="width:70.8029197080292%"/></colgroup><thead class="- topic/thead thead">
|
||
<tr class="- topic/row">
|
||
<th class="- topic/entry entry colsep-1 rowsep-1" id="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__1"><p class="- topic/p p" data-ofbid="d106974e65__20250519091516">字段</p></th>
|
||
<th class="- topic/entry entry colsep-1 rowsep-1" id="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__2"><p class="- topic/p p" data-ofbid="d106974e69__20250519091516">值类型</p></th>
|
||
<th class="- topic/entry entry colsep-0 rowsep-1" id="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__3"><p class="- topic/p p" data-ofbid="d106974e73__20250519091516">描述</p></th>
|
||
</tr>
|
||
</thead><tbody class="- topic/tbody tbody">
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__1"><p class="- topic/p p" data-ofbid="d106974e83__20250519091516"><var class="+ topic/keyword sw-d/varname keyword varname">media type</var></p></td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__2"><p class="- topic/p p" data-ofbid="d106974e88__20250519091516">String</p></td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__3">
|
||
<p class="- topic/p p" data-ofbid="d106974e93__20250519091516">存储设备类型</p>
|
||
<p class="- topic/p p" data-ofbid="d106974e96__20250519091516">该字段名字仅可使用此列表所指定的名字。</p>
|
||
<ul class="- topic/ul ul" id="concept_mtx_tk3_pzb__ul_vsx_cjc_jzb" data-ofbid="concept_mtx_tk3_pzb__ul_vsx_cjc_jzb">
|
||
<li class="- topic/li li" data-ofbid="d106974e101__20250519091516"><span class="+ topic/keyword pr-d/parmname keyword parmname">mmc</span>：eMMC 和 SD Card 设备</li>
|
||
<li class="- topic/li li" data-ofbid="d106974e106__20250519091516"><span class="+ topic/keyword pr-d/parmname keyword parmname">spi-nand</span>：SPI NAND 存储设备</li>
|
||
<li class="- topic/li li" data-ofbid="d106974e111__20250519091516"><span class="+ topic/keyword pr-d/parmname keyword parmname">spi-nor</span>：SPI NOR 存储设备</li>
|
||
</ul>
|
||
</td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__1"><p class="- topic/p p" data-ofbid="d106974e122__20250519091516"><span class="+ topic/keyword pr-d/parmname keyword parmname">size</span></p></td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__2"><p class="- topic/p p" data-ofbid="d106974e127__20250519091516">String</p></td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__3"><p class="- topic/p p" data-ofbid="d106974e131__20250519091516"><span class="+ topic/keyword pr-d/parmname keyword parmname">存储设备</span>的存储大小 (byte)，可设置。设备的存储大小 (Byte)，单位可为 K、M 或 G
|
||
，例如，8G。</p></td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__1"><p class="- topic/p p" data-ofbid="d106974e140__20250519091516"><span class="+ topic/keyword pr-d/parmname keyword parmname">partitions</span></p></td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__2"><p class="- topic/p p" data-ofbid="d106974e145__20250519091516">Object</p></td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__3"><p class="- topic/p p" data-ofbid="d106974e149__20250519091516"><span class="+ topic/keyword pr-d/parmname keyword parmname">分区表</span>对象。包含该存储设备的详细分区列表，每一个子对象为一个分区。</p></td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__1"><p class="- topic/p p" data-ofbid="d106974e158__20250519091516"><span class="+ topic/keyword pr-d/parmname keyword parmname">offset</span></p></td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__2"><p class="- topic/p p" data-ofbid="d106974e163__20250519091516">String</p></td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__3"><p class="- topic/p p" data-ofbid="d106974e167__20250519091516">16 进制字符串。表示该分区 的开始位置离存储设备
|
||
的开始位置的偏移（字节）。如果此字段未出现，表示当前分区紧接上一个分区。</p></td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__1"><p class="- topic/p p" data-ofbid="d106974e174__20250519091516"><span class="+ topic/keyword pr-d/parmname keyword parmname">size</span></p></td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__2"><p class="- topic/p p" data-ofbid="d106974e179__20250519091516">String</p></td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__3"><span class="+ topic/keyword pr-d/parmname keyword parmname">size</span>：设备的存储大小 (Byte)，单位可为 K、M 或 G
|
||
，例如，2m。<p class="- topic/p p" data-ofbid="d106974e186__20250519091516">最后一个分区可以使用 “-” 表示使用剩下所有的空间。</p></td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-0" headers="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__1"><p class="- topic/p p" data-ofbid="d106974e194__20250519091516"><span class="+ topic/keyword pr-d/parmname keyword parmname">ubi</span></p></td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-0" headers="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__2"><p class="- topic/p p" data-ofbid="d106974e199__20250519091516">Object</p></td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-0" headers="concept_mtx_tk3_pzb__table_p1q_b2c_jzb__entry__3"><span class="+ topic/keyword pr-d/parmname keyword parmname">UBI Volume</span> 对象。当存储设备为
|
||
<kbd class="+ topic/ph sw-d/userinput ph userinput">spi-nand</kbd> 时出现，表示当前 MTD 分区是一个 UBI 设备。该对象描述 UBI
|
||
设备中的 Volume 表。每一个子对象为一个 <span class="+ topic/keyword pr-d/parmname keyword parmname">UBI Volume</span>
|
||
。<div class="- topic/p p" data-ofbid="d106974e212__20250519091516"><span class="+ topic/keyword pr-d/parmname keyword parmname">UBI Volume</span>对象：<ul class="- topic/ul ul" id="concept_mtx_tk3_pzb__ul_axq_pfc_jzb" data-ofbid="concept_mtx_tk3_pzb__ul_axq_pfc_jzb">
|
||
<li class="- topic/li li" data-ofbid="d106974e218__20250519091516"><span class="+ topic/ph ui-d/uicontrol ph uicontrol">offset</span>：值为 16 进制字符串。表示该
|
||
<span class="+ topic/keyword pr-d/parmname keyword parmname">Volume</span> 的开始位置离
|
||
<span class="+ topic/keyword pr-d/parmname keyword parmname">MTD</span> 分区的开始位置的偏移（字节）。如果
|
||
<span class="+ topic/keyword pr-d/parmname keyword parmname">offset</span>不出现，表示当前 Volume 紧接上一个
|
||
Volume。</li>
|
||
<li class="- topic/li li" data-ofbid="d106974e232__20250519091516"><span class="+ topic/keyword pr-d/parmname keyword parmname">size</span>：设备的存储大小 (byte)，单位为 K、M 或 G
|
||
，例如，2m。<p class="- topic/p p" data-ofbid="d106974e236__20250519091516">最后一个分区可以使用 “-” 表示使用剩下所有的空间。</p></li>
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</ul></div></td>
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</tr>
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