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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic topic" 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/burnsys/flow.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">系统更新流程</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;">
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Read time: 1 minute(s)
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</div><div class="- topic/body body"><p class="- topic/p p" data-ofbid="d93890e19__20250121171531">系统更新流程因产品和平台而异，关于各个产品平台所支持的更新方式，可查看
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<a class="- topic/xref xref" href="statis.html">平台升级方式</a>。</p><section class="- topic/section section" id="id__section_tkr_34n_hdc" data-ofbid="id__section_tkr_34n_hdc"><h2 class="- topic/title title sectiontitle">刷机模式</h2>
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<div class="- topic/div div">
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<div class="- topic/p p" data-ofbid="d93890e32__20250121171531">开发板只有进入到刷机模式才能进行刷机操作，使用下列任意方法可进入刷机模式：<ul class="- topic/ul ul simple" id="id__ul_wyp_dj2_vcc" data-ofbid="id__ul_wyp_dj2_vcc"><li class="- topic/li li" data-ofbid="d93890e35__20250121171531">
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<p class="- topic/p p" data-ofbid="d93890e37__20250121171531">空片直接进入：开发板上存储介质为空片，则上电直接进入刷机模式。</p>
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</li><li class="- topic/li li" data-ofbid="d93890e40__20250121171531">
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<p class="- topic/p p" data-ofbid="d93890e42__20250121171531">短路烧录引脚：短路烧录引脚（PA0）到地，则上电直接进入刷机模式。</p>
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</li><li class="- topic/li li" data-ofbid="d93890e45__20250121171531">
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||
<p class="- topic/p p" data-ofbid="d93890e47__20250121171531">按住刷机键：如果开发板有刷机按键，则按住刷机键上电或者 reset，进入刷机模式，开发板上标注为
|
||
<span class="+ topic/ph ui-d/uicontrol ph uicontrol">uboot</span> 按键。</p>
|
||
</li><li class="- topic/li li" data-ofbid="d93890e53__20250121171531">
|
||
<p class="- topic/p p" data-ofbid="d93890e55__20250121171531">短路存储介质引脚：短路存储介质的 command、clk 等引脚到地，造成读数据失败，则上电直接进入刷机模式，如短路 SPINAND 的
|
||
4、5 脚。</p>
|
||
</li><li class="- topic/li li" data-ofbid="d93890e58__20250121171531">
|
||
<p class="- topic/p p" data-ofbid="d93890e60__20250121171531">通过控制台命令：如果开发板能进入 U-Boot ，在开机的过程中按住 Ctrl + c, 则系统会进入 U-Boot 控制台，输入
|
||
<span class="+ topic/keyword sw-d/cmdname keyword cmdname">aicupg usb 0</span> 命令可以进入烧写模式。</p>
|
||
</li><li class="- topic/li li" data-ofbid="d93890e66__20250121171531">
|
||
<p class="- topic/p p" data-ofbid="d93890e68__20250121171531">Linux 控制台命令：如果开发板能能进入 Linux 控制台，输入 <span class="+ topic/keyword sw-d/cmdname keyword cmdname">aicupg</span>
|
||
命令，系统可以重启后进入烧写模式。</p>
|
||
</li><li class="- topic/li li" data-ofbid="d93890e74__20250121171531">
|
||
<p class="- topic/p p" data-ofbid="d93890e76__20250121171531">ADB 服务：如果开发板能能进入 Linux 系统，并且 ADB 服务开启，刷机工具会检查到设备并使能 “开始”
|
||
按钮，可以直接点击<span class="+ topic/ph ui-d/uicontrol ph uicontrol">开始</span>刷机。</p>
|
||
</li></ul></div>
|
||
</div>
|
||
</section><section class="- topic/section section" id="id__section_irr_j1q_wcc" data-ofbid="id__section_irr_j1q_wcc"><h2 class="- topic/title title sectiontitle">刷机流程</h2>
|
||
|
||
<ol class="- topic/ol ol" id="id__ol_qgl_xc2_vcc" data-ofbid="id__ol_qgl_xc2_vcc"><li class="- topic/li li" data-ofbid="d93890e90__20250121171531">
|
||
<p class="- topic/p p" data-ofbid="d93890e92__20250121171531">等待系统上电，启动 SoC 内部的 BROM 程序。</p>
|
||
</li><li class="- topic/li li" data-ofbid="d93890e95__20250121171531">
|
||
<p class="- topic/p p" data-ofbid="d93890e97__20250121171531">BROM 按照如下顺序检查存储介质中是否有系统数据：</p>
|
||
<ul class="- topic/ul ul simple" id="id__ul_oll_xc2_vcc" data-ofbid="id__ul_oll_xc2_vcc"><li class="- topic/li li" data-ofbid="d93890e101__20250121171531">
|
||
<p class="- topic/p p" data-ofbid="d93890e103__20250121171531">SDMC1 （SD 卡）</p>
|
||
</li><li class="- topic/li li" data-ofbid="d93890e106__20250121171531">
|
||
<p class="- topic/p p" data-ofbid="d93890e108__20250121171531">SPI NAND</p>
|
||
</li><li class="- topic/li li" data-ofbid="d93890e111__20250121171531">
|
||
<p class="- topic/p p" data-ofbid="d93890e113__20250121171531">SPI NOR</p>
|
||
</li><li class="- topic/li li" data-ofbid="d93890e116__20250121171531">
|
||
<p class="- topic/p p" data-ofbid="d93890e118__20250121171531">SDMC0（eMMC）</p>
|
||
</li></ul>
|
||
</li><li class="- topic/li li" data-ofbid="d93890e122__20250121171531">
|
||
<div class="- topic/p p" data-ofbid="d93890e124__20250121171531">根据检测到的存储介质中的数据，BROM 执行以下相应启动操作：<ul class="- topic/ul ul" id="id__ul_g3t_fd2_vcc" data-ofbid="id__ul_g3t_fd2_vcc"><li class="- topic/li li" data-ofbid="d93890e127__20250121171531">如果检测到 SD 卡，且 SD 卡为启动盘，执行卡启动。</li><li class="- topic/li li" data-ofbid="d93890e129__20250121171531">如果检测到 SD 卡，且 SD 卡中是 FAT32 文件系统，并且有刷机的两个文件，则进行 SD 卡刷机。</li><li class="- topic/li li" data-ofbid="d93890e131__20250121171531">如果检测到存储介质 SPI NAND、SPI NOR 或 eMMC，且其中含有数据，则执行启动系统。</li></ul></div>
|
||
</li><li class="- topic/li li" data-ofbid="d93890e134__20250121171531">
|
||
<div class="- topic/p p" data-ofbid="d93890e136__20250121171531">U-Boot 执行以下检查，并根据检查结果，进入不同模式：<ul class="- topic/ul ul" id="id__ul_iwc_g22_vcc" data-ofbid="id__ul_iwc_g22_vcc"><li class="- topic/li li" data-ofbid="d93890e139__20250121171531">检查刷机键（PA0）是否被拉低，拉低则进入<a class="- topic/xref xref" href="flow.html#id__section_tkr_34n_hdc">刷机模式</a>，否则启动 kernel。</li><li class="- topic/li li" data-ofbid="d93890e145__20250121171531">检查 U 盘（USB0）中是否是 FAT32 文件系统，并且是否有刷机的两个文件，两个条件均满足则进行 U 盘刷机，否则启动
|
||
kernel。<p class="- topic/p p" data-ofbid="d93890e147__20250121171531">kernel 启动成功后会挂载 rootfs，系统正常启动。</p></li></ul></div>
|
||
<div class="- topic/p p" data-ofbid="d93890e150__20250121171531">
|
||
<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="id__image_vyp_dj2_vcc" src="../../../images/burnsys/burnsys_flow.png" width="576" alt="burnsys_flow"/></div><br/>
|
||
</div>
|
||
</li></ol>
|
||
</section><section class="- topic/section section" id="id__ota" data-ofbid="id__ota"><h2 class="- topic/title title sectiontitle">OTA 流程</h2>
|
||
|
||
|
||
<ol class="- topic/ol ol simple" id="id__ol_s1v_l32_vcc" data-ofbid="id__ol_s1v_l32_vcc"><li class="- topic/li li" data-ofbid="d93890e167__20250121171531">
|
||
<p class="- topic/p p" data-ofbid="d93890e169__20250121171531">系统启动到正常状态，准备升级需要的固件。</p>
|
||
</li><li class="- topic/li li" data-ofbid="d93890e172__20250121171531">
|
||
<p class="- topic/p p" data-ofbid="d93890e174__20250121171531">通过 OTA 方式下载固件到本地，或通过 SD 卡，U 盘，USB 线等外部存储器将固件复制到本地。</p>
|
||
</li><li class="- topic/li li" data-ofbid="d93890e177__20250121171531">
|
||
<p class="- topic/p p" data-ofbid="d93890e179__20250121171531">设置升级标记，重启系统。</p>
|
||
<p class="- topic/p p" data-ofbid="d93890e182__20250121171531">系统重新启动后会进入升级系统，</p>
|
||
</li><li class="- topic/li li" data-ofbid="d93890e185__20250121171531">
|
||
<p class="- topic/p p" data-ofbid="d93890e187__20250121171531">升级开发板到新的固件。</p>
|
||
<p class="- topic/p p" data-ofbid="d93890e190__20250121171531">升级过程中出现异常掉电，下次启动还能够继续完成剩下的升级过程。</p>
|
||
<p class="- topic/p p" data-ofbid="d93890e193__20250121171531">升级完成后重新启动系统即可进入新系统。</p>
|
||
</li></ol>
|
||
<figure class="- topic/fig fig fignone" data-ofbid="d93890e197__20250121171531"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="id__image_yyp_dj2_vcc" src="../../../images/burnsys/burnsys_ota.png" alt="burnsys_ota"/></div><br/></figure>
|
||
<p class="- topic/p p" data-ofbid="d93890e202__20250121171531">关于 OTA 升级逻辑的详细使用说明，可参考 <a class="- topic/xref xref" href="../ota/ota_guide.html">OTA 方案</a>。</p>
|
||
</section></div></article></main></div>
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<div class=" wh_topic_toc "><div class="wh_topic_label">在本页上</div><ul><li class="section-item"><div class="section-title"><a href="#id__section_tkr_34n_hdc" data-tocid="id__section_tkr_34n_hdc">刷机模式</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_irr_j1q_wcc" data-tocid="id__section_irr_j1q_wcc">刷机流程</a></div></li><li class="section-item"><div class="section-title"><a href="#id__ota" data-tocid="id__ota">OTA 流程</a></div></li></ul></div>
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