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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/uboot-module.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">U-Boot</h1><div class="date inPage">4 Dec 2024</div><div style="color: gray;"></div><div class="- topic/body concept/conbody body conbody"><p class="- topic/shortdesc shortdesc">启动支持的基本功能以及运行时的基本硬件环境。</p><p class="- topic/p p" data-ofbid="d314419e24__20250121171820">ArtInChip U-Boot 是基于官方版本 v2021.10 正式版进行移植后开发的专用启动引导程序， 开发过程中只增加新功能支持，对原有功能并没有进行改动。</p><div class="- topic/p p" data-ofbid="d314419e26__20250121171820">系统冷启动过程中经历的不同阶段有：<ul class="- topic/ul ul" id="uBoot__ul_jgt_yll_tzb" data-ofbid="uBoot__ul_jgt_yll_tzb"><li class="- topic/li li" data-ofbid="d314419e29__20250121171820">BROM (Boot ROM)</li><li class="- topic/li li" data-ofbid="d314419e31__20250121171820">Secondary Program Loader (SPL)</li><li class="- topic/li li" data-ofbid="d314419e33__20250121171820">OpenSBI</li><li class="- topic/li li" data-ofbid="d314419e35__20250121171820">U-Boot</li><li class="- topic/li li" data-ofbid="d314419e37__20250121171820">Kernel</li></ul></div><p class="- topic/p p" data-ofbid="d314419e39__20250121171820"> 下表列出了 U-Boot 支持的主要功能：</p><div class="table-container"><table class="- topic/table table frame-all" id="uBoot__id2" data-ofbid="uBoot__id2" 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">U-Boot 功能列表</span></caption><colgroup><col style="width:30.3951367781155%"/><col style="width:69.6048632218845%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-0 rowsep-0" id="uBoot__id2__entry__1">功能</th><th class="- topic/entry entry colsep-0 rowsep-0" id="uBoot__id2__entry__2">描述</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="uBoot__id2__entry__1">SPL</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="uBoot__id2__entry__2">在 U-Boot SPL 运行之前，BROM 已经对系统进行了基本的初始化。</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="uBoot__id2__entry__1">SPL Falcon 模式</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="uBoot__id2__entry__2">SPL 直接加载 Kernel</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="uBoot__id2__entry__1">启动介质</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="uBoot__id2__entry__2">SPI NOR/ SPI NAND/ SD Card/ eMMC</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="uBoot__id2__entry__1">USB 量产升级</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="uBoot__id2__entry__2">-</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="uBoot__id2__entry__1">SD Card 量产升级</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="uBoot__id2__entry__2">-</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="uBoot__id2__entry__1">U 盘升级</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="uBoot__id2__entry__2">-</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" 
                        
                        
                        
                        
                        
                        
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