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class="shortdesc">主要描述板卡的各项配置，使 SDK 的环境和板卡匹配，并确保 SDK 编译后的固件能够在板子上正常运行。</p></div></div></div><ul role="group" class="navbar-nav nav-list"><li role="treeitem" aria-expanded="false"><div data-tocid="id-d3752e2039" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d3752e2039-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-prepare.html" id="id-d3752e2039-link">准备工作</a></div></div></li><li role="treeitem"><div data-tocid="id-d3752e2097" class="topicref" data-id="id" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-soc.html" id="id-d3752e2097-link">引脚配置</a></div></div></li><li role="treeitem"><div data-tocid="id-d3752e2111" class="topicref" data-id="id" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-ram.html" id="id-d3752e2111-link">内存配置</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d3752e2125" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d3752e2125-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-storage.html" id="id-d3752e2125-link">存储配置</a></div></div></li><li role="treeitem" aria-expanded="true" class="active"><div data-tocid="id-d3752e2233" class="topicref" data-id="id" data-state="expanded"><span role="button" tabindex="0" aria-labelledby="button-collapse-action id-d3752e2233-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/advanced/partition_config_2.html" id="id-d3752e2233-link">配置分区</a></div></div><ul role="group" class="navbar-nav nav-list"><li role="treeitem"><div data-tocid="partition-intro-d3752e2247" class="topicref" data-id="partition-intro" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/advanced/partition_intro_2.html" id="partition-intro-d3752e2247-link">分区类型介绍</a></div></div></li><li role="treeitem"><div data-tocid="partition-and-storage-relations-d3752e2261" class="topicref" data-id="partition-and-storage-relations" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/advanced/partition-and-storage-relations_2.html" id="partition-and-storage-relations-d3752e2261-link">分区与存储设备的关系</a><div class="wh-tooltip"><p class="shortdesc"></p></div></div></div></li></ul></li><li role="treeitem"><div data-tocid="id-d3752e2277" class="topicref" data-id="id" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-console.html" id="id-d3752e2277-link">调试配置</a></div></div></li><li role="treeitem" 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id="id-d3752e2418-link">高级应用</a><div class="wh-tooltip"><p class="shortdesc">系统、存储、多媒体、接口、安全等模块的详细配置和设计说明。</p></div></div></div></li></ul></div>
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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic topic" 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/advanced/partition_config.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">配置分区</h1>
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<div class="date inPage">16 May 2025</div><div style="color: gray;">
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Read time: 6 minute(s)
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<div class="- topic/body body">
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<p class="- topic/p p" data-ofbid="d79233e39__20250519091512">在 <span class="- topic/ph ph">Luban-Lite</span>
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系统中，分区的设置和管理是系统正常运行和日常维护的重要方面。本章节介绍 <span class="- topic/ph ph">Luban-Lite</span>
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系统中分区的特点、规则和分区修改的方法。</p>
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<p class="- topic/p p" data-ofbid="d79233e48__20250519091512">按照存储介质的逻辑划分，关于<span class="- topic/ph ph">Luban-Lite</span> 默认分区类型，可查看<a class="- topic/xref xref" href="partition_intro.html">分区类型介绍</a>：</p>
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<section class="- topic/section section" id="id__section_xdj_cnq_gdc" data-ofbid="id__section_xdj_cnq_gdc"><h2 class="- topic/title title sectiontitle">修改分区</h2>
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<p class="- topic/p p" data-ofbid="d79233e63__20250519091512"><span class="+ topic/ph sw-d/filepath ph filepath">image_cfg.json</span>
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文件是设置分区信息以及如何生成烧录镜像文件的配置文件，由于分区和烧录信息是相互关联的，因此在一个文件中进行配置。
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<span class="+ topic/ph sw-d/filepath ph filepath">image_cfg.json</span> 文件的保存路径为
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<span class="+ topic/ph sw-d/filepath ph filepath">target/<var class="+ topic/keyword sw-d/varname keyword varname">chip</var>/<var class="+ topic/keyword sw-d/varname keyword varname">board</var>/pack/image_cfg.json</span>。</p>
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<div class="- topic/p p" data-ofbid="d79233e80__20250519091512">分区数值的书写规则如下：<ul class="- topic/ul ul simple" id="id__ul_hzh_tsy_5cc" data-ofbid="id__ul_hzh_tsy_5cc">
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<li class="- topic/li li" data-ofbid="d79233e84__20250519091512">
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<p class="- topic/p p" data-ofbid="d79233e86__20250519091512">不带单位，表示字节</p>
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</li>
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<li class="- topic/li li" data-ofbid="d79233e90__20250519091512">
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<p class="- topic/p p" data-ofbid="d79233e92__20250519091512">可以使用单位 k 或者 K</p>
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</li>
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<li class="- topic/li li" data-ofbid="d79233e96__20250519091512">
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<p class="- topic/p p" data-ofbid="d79233e98__20250519091512">可以使用单位 m 或者 M</p>
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</li>
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<li class="- topic/li li" data-ofbid="d79233e102__20250519091512">
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<p class="- topic/p p" data-ofbid="d79233e104__20250519091512">可以使用单位 g 或者 G</p>
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</li>
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</ul></div>
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<p class="- topic/p p" data-ofbid="d79233e109__20250519091512">输入分区 "size" 值时，需要注意存储介质的对齐要求：</p>
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<ul class="- topic/ul ul simple" id="id__ul_ufy_5sy_5cc" data-ofbid="id__ul_ufy_5sy_5cc">
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<li class="- topic/li li" data-ofbid="d79233e114__20250519091512">
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<p class="- topic/p p" data-ofbid="d79233e116__20250519091512">SPINOR: 与最小擦除块大小对齐，一般为 4K 或者 64K，具体请参考 SPINOR 的数据手册。</p>
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</li>
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<li class="- topic/li li" data-ofbid="d79233e120__20250519091512">
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<p class="- topic/p p" data-ofbid="d79233e122__20250519091512">SPI NAND: 与最小擦除块大小对齐，一般为 128K 或者 256K，具体请参考 SPINAND 的数据手册。</p>
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</li>
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<li class="- topic/li li" data-ofbid="d79233e126__20250519091512">
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<p class="- topic/p p" data-ofbid="d79233e128__20250519091512">eMMC: 需要 512 字节对齐。</p>
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</li>
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</ul>
|
||
<div class="- topic/p p" data-ofbid="d79233e134__20250519091512">分区设置步骤和流程如下所示：<ol class="- topic/ol ol" id="id__ul_sf5_3sy_5cc" data-ofbid="id__ul_sf5_3sy_5cc">
|
||
<li class="- topic/li li" data-ofbid="d79233e138__20250519091512">在 <span class="+ topic/ph sw-d/filepath ph filepath">image_cfg.json</span>
|
||
文件中查找对应媒介的分区配置信息。<div class="- topic/p p" data-ofbid="d79233e143__20250519091512"><span class="+ topic/ph sw-d/filepath ph filepath">image_cfg.json</span>
|
||
文件是设置分区信息以及配置烧录镜像文件生成方式的配置文件，保存路径为
|
||
<span class="+ topic/ph sw-d/filepath ph filepath">target/<var class="+ topic/keyword sw-d/varname keyword varname">chip</var>/<var class="+ topic/keyword sw-d/varname keyword varname">board</var>/pack/image_cfg.json</span>。<ul class="- topic/ul ul" id="id__ul_sn5_5yy_5cc" data-ofbid="id__ul_sn5_5yy_5cc">
|
||
<li class="- topic/li li" data-ofbid="d79233e158__20250519091512"><var class="+ topic/keyword sw-d/varname keyword varname">chip</var> 为对应芯片型号。</li>
|
||
<li class="- topic/li li" data-ofbid="d79233e163__20250519091512"><var class="+ topic/keyword sw-d/varname keyword varname">board</var> 为芯片开发板型号。</li>
|
||
</ul></div><div class="- topic/p p" data-ofbid="d79233e168__20250519091512">以下以 SPI NAND 的分区配置为例：<div class="- topic/note note note note_note" id="id__note_d4b_1zy_5cc" data-ofbid="id__note_d4b_1zy_5cc"><span class="note__title">注：</span> 对于 SPI NAND
|
||
Flash 的分区配置，需要注意 NFTL
|
||
分区的配置方法。</div><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_t5q_gty_5cc" data-ofbid="id__codeblock_t5q_gty_5cc"><span class="hl-string">"spi-nand"</span>: {
|
||
<span class="hl-string">"size"</span>: <span class="hl-string">"128m"</span>, <em class="hl-comment">// Size of SPI NAND</em>
|
||
<span class="hl-string">"partitions"</span>: {
|
||
<span class="hl-string">"spl"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"1m"</span> },
|
||
<span class="hl-string">"env"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"256k"</span> },
|
||
<span class="hl-string">"env_r"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"256k"</span> },
|
||
<span class="hl-string">"os"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"4m"</span> },
|
||
<span class="hl-string">"os_r"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"4m"</span> },
|
||
<span class="hl-string">"rodata"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"12m"</span> },
|
||
<span class="hl-string">"rodata_r"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"12m"</span> },
|
||
<span class="hl-string">"data"</span>: {
|
||
<span class="hl-string">"size"</span>: <span class="hl-string">"40m"</span>,
|
||
<span class="hl-string">"nftl"</span>: { <em class="hl-comment">// Volume in NFTL device</em>
|
||
<span class="hl-string">"datavol"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"-"</span> },
|
||
},
|
||
},
|
||
},
|
||
},</pre></div></li>
|
||
<li class="- topic/li li" data-ofbid="d79233e175__20250519091512">根据所需分区尺寸，修改对应的分区 "size" 值，否则可跳过此步。<div class="- topic/p p" data-ofbid="d79233e177__20250519091512">例如，将 "data" 分区中的 "size" 从 40M 修改为 50M
|
||
后，示例如下：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_ljq_rty_5cc" data-ofbid="id__codeblock_ljq_rty_5cc"><span class="hl-string">"spi-nand"</span>: {
|
||
<span class="hl-string">"size"</span>: <span class="hl-string">"128m"</span>, <em class="hl-comment">// Size of SPI NAND</em>
|
||
<span class="hl-string">"partitions"</span>: {
|
||
<span class="hl-string">"spl"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"1m"</span> },
|
||
<span class="hl-string">"env"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"256k"</span> },
|
||
<span class="hl-string">"env_r"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"256k"</span> },
|
||
<span class="hl-string">"os"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"4m"</span> },
|
||
<span class="hl-string">"os_r"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"4m"</span> },
|
||
<span class="hl-string">"rodata"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"12m"</span> },
|
||
<span class="hl-string">"rodata_r"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"12m"</span> },
|
||
<span class="hl-string">"data"</span>: {
|
||
<span class="hl-string">"size"</span>: <span class="hl-string">"50m"</span>,
|
||
<span class="hl-string">"nftl"</span>: { <em class="hl-comment">// Volume in NFTL device</em>
|
||
<span class="hl-string">"datavol"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"-"</span> },
|
||
},
|
||
},
|
||
},
|
||
},</pre></div></li>
|
||
<li class="- topic/li li" data-ofbid="d79233e182__20250519091512">如需新增一个分区，在所需位置添加一行配置即可，否则可跳过此步。<div class="- topic/p p" data-ofbid="d79233e184__20250519091512">例如，新增一个 "user"
|
||
分区，示例如下：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_j4c_pty_5cc" data-ofbid="id__codeblock_j4c_pty_5cc"><span class="hl-string">"spi-nand"</span>: {
|
||
<span class="hl-string">"size"</span>: <span class="hl-string">"128m"</span>, <em class="hl-comment">// Size of SPI NAND</em>
|
||
<span class="hl-string">"partitions"</span>: {
|
||
<span class="hl-string">"spl"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"1m"</span> },
|
||
<span class="hl-string">"env"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"256k"</span> },
|
||
<span class="hl-string">"env_r"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"256k"</span> },
|
||
<span class="hl-string">"os"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"4m"</span> },
|
||
<span class="hl-string">"os_r"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"4m"</span> },
|
||
<span class="hl-string">"rodata"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"12m"</span> },
|
||
<span class="hl-string">"rodata_r"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"12m"</span> },
|
||
<span class="hl-string">"user"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"20m"</span> }, <em class="hl-comment">// 新添加的分区</em>
|
||
<span class="hl-string">"data"</span>: {
|
||
<span class="hl-string">"size"</span>: <span class="hl-string">"50m"</span>,
|
||
<span class="hl-string">"nftl"</span>: { <em class="hl-comment">// Volume in NFTL device</em>
|
||
<span class="hl-string">"datavol"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"20m"</span> },
|
||
},
|
||
},
|
||
},
|
||
},</pre></div></li>
|
||
<li class="- topic/li li" data-ofbid="d79233e189__20250519091512">如果新增的分区需要烧录预制内容，在 "target" 段中新增配置。<div class="- topic/note note note note_note" id="id__note_ddm_kyy_5cc" data-ofbid="id__note_ddm_kyy_5cc"><span class="note__title">注：</span> 对于分区表中的分区，如果没有在 "target" 段中设置需要烧录的数据，则在烧录过程中，该分区不会被擦除和修改。</div><div class="- topic/p p" data-ofbid="d79233e193__20250519091512">
|
||
<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_yrb_jyy_5cc" data-ofbid="id__codeblock_yrb_jyy_5cc"><span class="hl-string">"target"</span>: { <em class="hl-comment">// Image components which will be burn to device's partitions</em>
|
||
<span class="hl-string">"spl"</span>: {
|
||
<span class="hl-string">"file"</span>: <span class="hl-string">"bootloader.aic"</span>,
|
||
<span class="hl-string">"attr"</span>: [<span class="hl-string">"required"</span>],
|
||
<span class="hl-string">"part"</span>: [<span class="hl-string">"spl"</span>]
|
||
},
|
||
|
||
...
|
||
|
||
<span class="hl-string">"mydata"</span>: { <em class="hl-comment">// 此处组件名字可自定义</em>
|
||
<span class="hl-string">"file"</span>: <span class="hl-string">"userdata.bin"</span>, <em class="hl-comment">// 此处为要烧录到分区的数据</em>
|
||
<span class="hl-string">"attr"</span>: [<span class="hl-string">"mtd"</span>, <span class="hl-string">"optional"</span>],
|
||
<span class="hl-string">"part"</span>: [<span class="hl-string">"user"</span>] <em class="hl-comment">// 此处设置要烧录的分区名字</em>
|
||
},
|
||
},</pre>
|
||
</div></li>
|
||
<li class="- topic/li li" data-ofbid="d79233e199__20250519091512">如需删除一个分区，删除对应的分区配置行即可。<div class="- topic/p p" data-ofbid="d79233e201__20250519091512">例如，删除新增的 "user"
|
||
分区，示例如下：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_ups_nyy_5cc" data-ofbid="id__codeblock_ups_nyy_5cc"><span class="hl-string">"spi-nand"</span>: {
|
||
<span class="hl-string">"size"</span>: <span class="hl-string">"128m"</span>, <em class="hl-comment">// Size of SPI NAND</em>
|
||
<span class="hl-string">"partitions"</span>: {
|
||
<span class="hl-string">"spl"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"1m"</span> },
|
||
<span class="hl-string">"env"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"256k"</span> },
|
||
<span class="hl-string">"env_r"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"256k"</span> },
|
||
<span class="hl-string">"os"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"4m"</span> },
|
||
<span class="hl-string">"os_r"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"4m"</span> },
|
||
<span class="hl-string">"rodata"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"12m"</span> },
|
||
<span class="hl-string">"rodata_r"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"12m"</span> },
|
||
<span class="hl-string">"data"</span>: {
|
||
<span class="hl-string">"size"</span>: <span class="hl-string">"50m"</span>,
|
||
<span class="hl-string">"nftl"</span>: { <em class="hl-comment">// Volume in NFTL device</em>
|
||
<span class="hl-string">"datavol"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"20m"</span> },
|
||
},
|
||
},
|
||
},
|
||
},</pre></div><div class="- topic/note note note note_note" id="id__note_ipr_syy_5cc" data-ofbid="id__note_ipr_syy_5cc"><span class="note__title">注：</span>
|
||
<p class="- topic/p p" data-ofbid="d79233e207__20250519091512">检查 <code class="+ topic/ph pr-d/codeph ph codeph">target</code> 段中是否有使用该分区，如果有，则删除相关的配置。</p>
|
||
</div></li>
|
||
</ol></div>
|
||
</section>
|
||
<section class="- topic/section section" id="id__id6" data-ofbid="id__id6"><h2 class="- topic/title title sectiontitle">分区配置示例 </h2>
|
||
|
||
<div class="- topic/p p" data-ofbid="d79233e221__20250519091512"><span class="+ topic/ph sw-d/filepath ph filepath">image_cfg.json</span>
|
||
文件是设置分区信息以及配置烧录镜像文件生成方式的配置文件。由于分区和烧录信息是相互关联的，因此在一个文件中进行配置。
|
||
<span class="+ topic/ph sw-d/filepath ph filepath">image_cfg.json</span> 文件的保存路径为
|
||
<span class="+ topic/ph sw-d/filepath ph filepath">target/<var class="+ topic/keyword sw-d/varname keyword varname">chip</var>/<var class="+ topic/keyword sw-d/varname keyword varname">board</var>/pack/image_cfg.json</span>。<ul class="- topic/ul ul" id="id__ul_eqf_lqy_5cc" data-ofbid="id__ul_eqf_lqy_5cc">
|
||
<li class="- topic/li li" data-ofbid="d79233e239__20250519091512"><var class="+ topic/keyword sw-d/varname keyword varname">chip</var> 为对应芯片型号。</li>
|
||
<li class="- topic/li li" data-ofbid="d79233e244__20250519091512"><var class="+ topic/keyword sw-d/varname keyword varname">board</var> 为芯片开发板型号。</li>
|
||
</ul></div>
|
||
</section>
|
||
<div class="- topic/example example" id="id__example_tvw_yxr_x2c" data-ofbid="id__example_tvw_yxr_x2c"><h2 class="- topic/title title sectiontitle">SPI NOR 的分区配置示例</h2>
|
||
|
||
<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_azr_yxr_x2c" data-ofbid="id__codeblock_azr_yxr_x2c"><span class="hl-string">"spi-nor"</span>: {
|
||
<span class="hl-string">"size"</span>: <span class="hl-string">"16m"</span>, <em class="hl-comment">// Size of SPI NOR</em>
|
||
<span class="hl-string">"partitions"</span>: {
|
||
<span class="hl-string">"spl"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"256k"</span> },
|
||
<span class="hl-string">"env"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"128k"</span> },
|
||
<span class="hl-string">"env_r"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"128k"</span> },
|
||
<span class="hl-string">"os"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"1m"</span> },
|
||
<span class="hl-string">"os_r"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"1m"</span> },
|
||
<span class="hl-string">"rodata"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"3m"</span> },
|
||
<span class="hl-string">"rodata_r"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"3m"</span> },
|
||
<span class="hl-string">"data"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"7m"</span> }
|
||
},
|
||
},
|
||
</pre>
|
||
</div>
|
||
<div class="- topic/example example" id="id__example_oms_1yr_x2c" data-ofbid="id__example_oms_1yr_x2c"><h2 class="- topic/title title sectiontitle">SPI NAND Flash 的分区配置示例</h2>
|
||
|
||
<div class="- topic/note note note note_note" id="id__note_gtq_fqq_3dc" data-ofbid="id__note_gtq_fqq_3dc"><span class="note__title">注：</span> 对于 SPI NAND Flash 的分区配置，需要注意 NFTL
|
||
分区的配置方法。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_r2y_qqq_3dc" data-ofbid="id__codeblock_r2y_qqq_3dc"><span class="hl-string">"spi-nand"</span>: {
|
||
<span class="hl-string">"size"</span>: <span class="hl-string">"128m"</span>, <em class="hl-comment">// Size of SPI NAND</em>
|
||
<span class="hl-string">"partitions"</span>: {
|
||
<span class="hl-string">"spl"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"1m"</span> },
|
||
<span class="hl-string">"env"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"256k"</span> },
|
||
<span class="hl-string">"env_r"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"256k"</span> },
|
||
<span class="hl-string">"os"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"4m"</span> },
|
||
<span class="hl-string">"os_r"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"4m"</span> },
|
||
<span class="hl-string">"rodata"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"12m"</span> },
|
||
<span class="hl-string">"rodata_r"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"12m"</span> },
|
||
<span class="hl-string">"data"</span>: {
|
||
<span class="hl-string">"size"</span>: <span class="hl-string">"40m"</span>,
|
||
<span class="hl-string">"nftl"</span>: { <em class="hl-comment">// Volume in NFTL device</em>
|
||
<span class="hl-string">"datavol"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"-"</span> },
|
||
},
|
||
},
|
||
},
|
||
},
|
||
</pre><div class="- topic/p p" data-ofbid="d79233e270__20250519091512">上述示例中， "data" 分区的配置了如下内容：<ul class="- topic/ul ul" id="id__ul_i5x_fry_5cc" data-ofbid="id__ul_i5x_fry_5cc">
|
||
<li class="- topic/li li" data-ofbid="d79233e274__20250519091512">"size"：40 MB</li>
|
||
<li class="- topic/li li" data-ofbid="d79233e277__20250519091512">"nftl" 设备：<ul class="- topic/ul ul" id="id__ul_qv2_hry_5cc" data-ofbid="id__ul_qv2_hry_5cc">
|
||
<li class="- topic/li li" data-ofbid="d79233e281__20250519091512">"datavol"： 表示 NFTL 设备的一个卷。</li>
|
||
</ul><ul class="- topic/ul ul" id="id__ul_phz_hry_5cc" data-ofbid="id__ul_phz_hry_5cc">
|
||
<li class="- topic/li li" data-ofbid="d79233e286__20250519091512">"size"：“-” 表示卷的大小是 NFTL 设备的所有剩余存储空间。<p class="- topic/p p" data-ofbid="d79233e288__20250519091512">NFTL 设备需要使用大约 6 MB
|
||
的空间做坏块管理，因此 “datavol” 的可用大小大约为 34 MB。</p></li>
|
||
</ul></li>
|
||
</ul></div></div>
|
||
</div>
|
||
<div class="- topic/example example" id="id__example_dmk_cyr_x2c" data-ofbid="id__example_dmk_cyr_x2c"><h2 class="- topic/title title sectiontitle">eMMC 的分区配置示例</h2>
|
||
|
||
<div class="- topic/div div">
|
||
<div class="- topic/p p" data-ofbid="d79233e301__20250519091512">
|
||
<div class="- topic/note note note note_note" id="id__note_a1x_sry_5cc" data-ofbid="id__note_a1x_sry_5cc"><span class="note__title">注：</span> 第一个分区的开始位置。eMMC
|
||
使用 GPT 分区表格式，需要在 eMMC 的开始和末尾都预留 17K 的空间存放 GPT 信息，因此 “spl” 的开始位置为
|
||
“0x4400”。</div>
|
||
</div>
|
||
<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_pgz_rqq_3dc" data-ofbid="id__codeblock_pgz_rqq_3dc"><span class="hl-string">"mmc"</span>: {
|
||
<span class="hl-string">"size"</span>: <span class="hl-string">"8G"</span>, <em class="hl-comment">// Size of SD/eMMC</em>
|
||
<span class="hl-string">"partitions"</span>: {
|
||
<span class="hl-string">"spl"</span>: { <span class="hl-string">"offset"</span>: <span class="hl-string">"0x4400"</span>, <span class="hl-string">"size"</span>: <span class="hl-string">"256k"</span> },
|
||
<span class="hl-string">"os"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"1m"</span> },
|
||
<span class="hl-string">"rodata"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"3m"</span> },
|
||
<span class="hl-string">"data"</span>: { <span class="hl-string">"size"</span>: <span class="hl-string">"5m"</span> }
|
||
},
|
||
},
|
||
</pre>
|
||
<p class="- topic/p p" data-ofbid="d79233e313__20250519091512">每一个分区的配置项中，都有 "offset" 和 "size" 两个配置信息，其中 "offset" 用于配置该分区的开始位置。 如未设置
|
||
"offset"，表示该分区紧跟上一个分区之后。</p>
|
||
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