253 lines
35 KiB
HTML
253 lines
35 KiB
HTML
<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-cn" lang="zh-cn" data-whc_version="27.0">
|
||
<head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/><meta name="viewport" content="width=device-width, initial-scale=1.0"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><meta name="description" content="SDFAT32 启动方式更为简单，不需要专业的烧录工具进行烧写，只需要将镜像文件复制到 SD 卡即可。 图 1 . MMC 与 SD 卡启动差异 SDFAT32 是基于 MMC 建立的，加载程序也在 spl_mmc.c 中实现： 使用下列宏参数将 spl_mmc_load_image 函数添加到 .u_boot_list_2_spl_image_loader_* 段。 ..."/><meta name="DC.rights.owner" content="(C) 版权 2025"/><meta name="copyright" content="(C) 版权 2025"/><meta name="generator" content="DITA-OT"/><meta name="DC.type" content="concept"/><meta name="DC.relation" content="../../../topics/sdk/boot/spl-program-stage.html"/><meta name="DC.relation" content="../../../topics/sdk/boot/load-spiNor.html"/><meta name="DC.relation" content="../../../topics/sdk/boot/signature-verify.html"/><meta name="DC.contributor" content="yan.wang"/><meta name="DC.contributor" content="yan.wang"/><meta name="DC.date.modified" content="2024-01-15"/><meta name="DC.format" content="HTML5"/><meta name="DC.identifier" content="sdfat32"/><meta name="DC.language" content="zh-CN"/><title>SDFAT32 加载</title><!-- Generated with build number 2024112209. --><meta name="wh-path2root" content="../../../"/><meta name="wh-toc-id" content="sdfat32-d4445e2369"/><meta name="wh-source-relpath" content="topics/sdk/boot/load-SDFAT32.dita"/><meta name="wh-out-relpath" content="topics/sdk/boot/load-SDFAT32.html"/>
|
||
|
||
<link rel="stylesheet" type="text/css" href="../../../webhelp/app/commons.css?buildId=2024112209"/>
|
||
<link rel="stylesheet" type="text/css" href="../../../webhelp/app/topic.css?buildId=2024112209"/>
|
||
|
||
<script src="../../../webhelp/app/options/properties.js?buildId=20250123154945"></script>
|
||
<script src="../../../webhelp/app/localization/strings.js?buildId=2024112209"></script>
|
||
<script src="../../../webhelp/app/search/index/keywords.js?buildId=20250123154945"></script>
|
||
<script defer="defer" src="../../../webhelp/app/commons.js?buildId=2024112209"></script>
|
||
<script defer="defer" src="../../../webhelp/app/topic.js?buildId=2024112209"></script>
|
||
<link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-styles-web.css?buildId=2024112209"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/notes.css?buildId=2024112209"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-common.css?buildId=2024112209"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-images.css?buildId=2024112209"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/footnote.css?buildId=2024112209"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-web-watermark.css?buildId=2024112209"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/topic-body-list.css?buildId=2024112209"/></head>
|
||
|
||
<body id="sdfat32" class="wh_topic_page frmBody">
|
||
<a href="#wh_topic_body" class="sr-only sr-only-focusable">
|
||
跳转到主要内容
|
||
</a>
|
||
|
||
|
||
|
||
|
||
<header class="navbar navbar-default wh_header">
|
||
<div class="container-fluid">
|
||
<div class="wh_header_flex_container navbar-nav navbar-expand-md navbar-dark">
|
||
<div class="wh_logo_and_publication_title_container">
|
||
<div class="wh_logo_and_publication_title">
|
||
|
||
<a href="http://www.artinchip.com" class=" wh_logo d-none d-sm-block "><img src="../../../company-logo-white.png" alt=" Linux SDK 使用指南 SDK 指南文件 "/></a>
|
||
<div class=" wh_publication_title "><a href="../../../index.html"><span class="booktitle"> <span class="ph mainbooktitle">Linux SDK 使用指南</span> <span class="ph booktitlealt">SDK 指南文件</span> </span></a></div>
|
||
|
||
</div>
|
||
|
||
|
||
</div>
|
||
|
||
<div class="wh_top_menu_and_indexterms_link collapse navbar-collapse" id="wh_top_menu_and_indexterms_link">
|
||
|
||
|
||
|
||
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</header>
|
||
|
||
|
||
|
||
|
||
<div class=" wh_search_input navbar-form wh_topic_page_search search " role="form">
|
||
|
||
|
||
|
||
<form id="searchForm" method="get" role="search" action="../../../search.html"><div><input type="search" placeholder="搜索 " class="wh_search_textfield" id="textToSearch" name="searchQuery" aria-label="搜索查询" required="required"/><button type="submit" class="wh_search_button" aria-label="搜索"><span class="search_input_text">搜索</span></button></div></form>
|
||
|
||
|
||
|
||
</div>
|
||
|
||
<div class="container-fluid" id="wh_topic_container">
|
||
<div class="row">
|
||
|
||
<nav class="wh_tools d-print-none navbar-expand-md" aria-label="Tools">
|
||
|
||
<div data-tooltip-position="bottom" class=" wh_breadcrumb "><ol class="d-print-none"><li><span class="home"><a href="../../../index.html"><span>主页</span></a></span></li><li><div class="topicref" data-id="id"><div class="title"><a href="../../../topics/sdk/chapter-advanced-app.html">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><li><div class="topicref" data-id="uBoot"><div class="title"><a href="../../../topics/sdk/boot/uboot-module.html">U-Boot</a><div class="wh-tooltip"><p class="shortdesc">启动支持的基本功能以及运行时的基本硬件环境。</p></div></div></div></li><li><div class="topicref" data-id="spl"><div class="title"><a href="../../../topics/sdk/boot/spl-program-stage.html">SPL 阶段</a></div></div></li><li class="active"><div class="topicref" data-id="sdfat32"><div class="title"><a href="../../../topics/sdk/boot/load-SDFAT32.html">SDFAT32 加载</a></div></div></li></ol></div>
|
||
|
||
|
||
|
||
<div class="wh_right_tools">
|
||
<button class="wh_hide_highlight" aria-label="切换搜索突出显示" title="切换搜索突出显示"></button>
|
||
<button class="webhelp_expand_collapse_sections" data-next-state="collapsed" aria-label="折叠截面" title="折叠截面"></button>
|
||
<div class=" wh_navigation_links "><span id="topic_navigation_links" class="navheader">
|
||
|
||
<span class="navprev"><a class="- topic/link link" href="../../../topics/sdk/boot/load-spiNor.html" title="SPI NOR 加载" aria-label="上一主题: SPI NOR 加载" rel="prev"></a></span>
|
||
<span class="navnext"><a class="- topic/link link" href="../../../topics/sdk/boot/signature-verify.html" title="签名校验" aria-label="下一主题: 签名校验" rel="next"></a></span> </span></div>
|
||
|
||
|
||
|
||
<div class=" wh_print_link print d-none d-md-inline-block "><button onClick="window.print()" title="打印此页" aria-label="打印此页"></button></div>
|
||
|
||
<button type="button" id="wh_toc_button" class="custom-toggler navbar-toggler collapsed wh_toggle_button navbar-light" aria-expanded="false" aria-label="Toggle publishing table of content" aria-controls="wh_publication_toc">
|
||
<span class="navbar-toggler-icon"></span>
|
||
</button>
|
||
</div>
|
||
|
||
</nav>
|
||
</div>
|
||
|
||
|
||
|
||
|
||
<div class="wh_content_area">
|
||
<div class="row">
|
||
|
||
<nav id="wh_publication_toc" class="col-lg-3 col-md-3 col-sm-12 d-md-block d-none d-print-none" aria-label="Table of Contents Container">
|
||
<div id="wh_publication_toc_content">
|
||
|
||
<div class=" wh_publication_toc " data-tooltip-position="right"><span class="expand-button-action-labels"><span id="button-expand-action" role="button" aria-label="Expand"></span><span id="button-collapse-action" role="button" aria-label="Collapse"></span><span id="button-pending-action" role="button" aria-label="Pending"></span></span><ul role="tree" aria-label="Table of Contents"><li role="treeitem"><div data-tocid="revinfo_linux-d4445e1079" class="topicref" data-id="revinfo_linux" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/revinfo/revinfo_linux.html" id="revinfo_linux-d4445e1079-link">修订记录</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d4445e1096" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d4445e1096-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/env/sdk-compile.html" id="id-d4445e1096-link">SDK 编译</a><div class="wh-tooltip"><p class="shortdesc">介绍不同编译环境下 SDK 的详细编译流程。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="tocId-d4445e1240" class="topicref" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action tocId-d4445e1240-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/advanced/lb_usage_commands.html" id="tocId-d4445e1240-link">使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_rcx_czh_pzb-d4445e1360" class="topicref" data-id="concept_rcx_czh_pzb" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_rcx_czh_pzb-d4445e1360-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/chapter-app.html" id="concept_rcx_czh_pzb-d4445e1360-link">应用场景</a><div class="wh-tooltip"><p class="shortdesc">描述了 SDK 在不同应用场景中的配置和使用，包括系统更新、OTA、安全方案等。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d4445e1678" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d4445e1678-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/peripheral/peripheral-intro.html" id="id-d4445e1678-link">外设移植</a><div class="wh-tooltip"><p class="shortdesc"><span class="ph">触摸屏、显示器、WIFI 模块、按键</span>等外设的介绍和使用说明。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d4445e1964" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d4445e1964-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/chapter-bringup.html" id="id-d4445e1964-link">BringUp</a><div class="wh-tooltip"><p class="shortdesc">在硬件上电后快速初始化系统，为操作系统的启动准备好必要的硬件环境。</p></div></div></div></li><li role="treeitem" aria-expanded="true"><div data-tocid="id-d4445e2153" class="topicref" data-id="id" data-state="expanded"><span role="button" tabindex="0" aria-labelledby="button-collapse-action id-d4445e2153-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/chapter-advanced-app.html" id="id-d4445e2153-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><ul role="group" class="navbar-nav nav-list"><li role="treeitem" aria-expanded="true"><div data-tocid="uBoot-d4445e2170" class="topicref" data-id="uBoot" data-state="expanded"><span role="button" tabindex="0" aria-labelledby="button-collapse-action uBoot-d4445e2170-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/uboot-module.html" id="uBoot-d4445e2170-link">U-Boot</a><div class="wh-tooltip"><p class="shortdesc">启动支持的基本功能以及运行时的基本硬件环境。</p></div></div></div><ul role="group" class="navbar-nav nav-list"><li role="treeitem"><div data-tocid="_65-d4445e2187" class="topicref" data-id="_65" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/uboot-hardware-env.html" id="_65-d4445e2187-link">硬件运行环境</a></div></div></li><li role="treeitem"><div data-tocid="_1601-d4445e2201" class="topicref" data-id="_1601" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/uboot-parameter.html" id="_1601-d4445e2201-link">启动参数</a></div></div></li><li role="treeitem"><div data-tocid="_1601_0-d4445e2215" class="topicref" data-id="_1601_0" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/boot-memory.html" id="_1601_0-d4445e2215-link">内存相关</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_lbx_3n3_pzb-d4445e2229" class="topicref" data-id="concept_lbx_3n3_pzb" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_lbx_3n3_pzb-d4445e2229-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/environment-variables.html" id="concept_lbx_3n3_pzb-d4445e2229-link">环境变量</a></div></div></li><li role="treeitem"><div data-tocid="dts-d4445e2271" class="topicref" data-id="dts" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/uboot-dts.html" id="dts-d4445e2271-link">DTS</a></div></div></li><li role="treeitem" aria-expanded="true"><div data-tocid="spl-d4445e2285" class="topicref" data-id="spl" data-state="expanded"><span role="button" tabindex="0" aria-labelledby="button-collapse-action spl-d4445e2285-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/spl-program-stage.html" id="spl-d4445e2285-link">SPL 阶段</a></div></div><ul role="group" class="navbar-nav nav-list"><li role="treeitem"><div data-tocid="riscvSpl-d4445e2299" class="topicref" data-id="riscvSpl" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/uboot-riscv-spl.html" id="riscvSpl-d4445e2299-link">RISCV SPL</a></div></div></li><li role="treeitem"><div data-tocid="_66-d4445e2313" class="topicref" data-id="_66" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/spl-boot-procedure.html" id="_66-d4445e2313-link">启动流程</a></div></div></li><li role="treeitem"><div data-tocid="mmc-d4445e2327" class="topicref" data-id="mmc" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/load-mmc.html" id="mmc-d4445e2327-link">MMC 加载</a></div></div></li><li role="treeitem"><div data-tocid="concept_nsb_pj3_pzb-d4445e2341" class="topicref" data-id="concept_nsb_pj3_pzb" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/load-spiNand.html" id="concept_nsb_pj3_pzb-d4445e2341-link">SPI NAND 加载</a></div></div></li><li role="treeitem"><div data-tocid="concept_dhz_pj3_pzb-d4445e2355" class="topicref" data-id="concept_dhz_pj3_pzb" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/load-spiNor.html" id="concept_dhz_pj3_pzb-d4445e2355-link">SPI NOR 加载</a></div></div></li><li role="treeitem" class="active"><div data-tocid="sdfat32-d4445e2369" class="topicref" data-id="sdfat32" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/load-SDFAT32.html" id="sdfat32-d4445e2369-link">SDFAT32 加载</a></div></div></li><li role="treeitem"><div data-tocid="concept_lx3_tn3_pzb-d4445e2383" class="topicref" data-id="concept_lx3_tn3_pzb" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/signature-verify.html" id="concept_lx3_tn3_pzb-d4445e2383-link">签名校验</a></div></div></li><li role="treeitem"><div data-tocid="back_to_brom-d4445e2397" class="topicref" data-id="back_to_brom" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/back-to-brom.html" id="back_to_brom-d4445e2397-link">返回 BROM</a></div></div></li></ul></li><li role="treeitem" aria-expanded="false"><div data-tocid="uBoot_0-d4445e2411" class="topicref" data-id="uBoot_0" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action uBoot_0-d4445e2411-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/uboot-stage.html" id="uBoot_0-d4445e2411-link">U-Boot 阶段</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_q5s_jn3_pzb-d4445e2495" class="topicref" data-id="concept_q5s_jn3_pzb" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_q5s_jn3_pzb-d4445e2495-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/uboot-driver-support.html" id="concept_q5s_jn3_pzb-d4445e2495-link">驱动支持</a></div></div></li><li role="treeitem"><div data-tocid="concept_l2d_xk3_pzb-d4445e2607" class="topicref" data-id="concept_l2d_xk3_pzb" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/uboot-partition-config.html" id="concept_l2d_xk3_pzb-d4445e2607-link">配置启动分区</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_afz_xk3_pzb-d4445e2621" class="topicref" data-id="concept_afz_xk3_pzb" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_afz_xk3_pzb-d4445e2621-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/uboot-core.html" id="concept_afz_xk3_pzb-d4445e2621-link">启动内核</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_uzy_yk3_pzb-d4445e2692" class="topicref" data-id="concept_uzy_yk3_pzb" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_uzy_yk3_pzb-d4445e2692-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/bundle-images.html" id="concept_uzy_yk3_pzb-d4445e2692-link">打包镜像</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_yfv_1l3_pzb-d4445e2832" class="topicref" data-id="concept_yfv_1l3_pzb" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_yfv_1l3_pzb-d4445e2832-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/uboot-chapter-image-burn.html" id="concept_yfv_1l3_pzb-d4445e2832-link">镜像烧录</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="userid-d4445e2888" class="topicref" data-id="userid" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action userid-d4445e2888-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/userid-burn.html" id="userid-d4445e2888-link">UserID 烧录</a></div></div></li><li role="treeitem"><div data-tocid="concept_azt_bl3_pzb-d4445e2944" class="topicref" data-id="concept_azt_bl3_pzb" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/logo-display.html" id="concept_azt_bl3_pzb-d4445e2944-link">图像显示</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="_1601_1-d4445e2958" class="topicref" data-id="_1601_1" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action _1601_1-d4445e2958-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/debug-configuration.html" id="_1601_1-d4445e2958-link">调试配置</a></div></div></li><li role="treeitem"><div data-tocid="opensbi-d4445e3000" class="topicref" data-id="opensbi" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/opensbi.html" id="opensbi-d4445e3000-link">OpenSBI</a></div></div></li><li role="treeitem"><div data-tocid="pbp-d4445e3014" class="topicref" data-id="pbp" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/pre-boot-program.html" id="pbp-d4445e3014-link">Pre-Boot Program (PBP)</a></div></div></li></ul></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_mtx_tk3_pzb-d4445e3028" class="topicref" data-id="concept_mtx_tk3_pzb" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_mtx_tk3_pzb-d4445e3028-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/linux/chapter_linux.html" id="concept_mtx_tk3_pzb-d4445e3028-link">Linux</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="chapter-system-d4445e3198" class="topicref" data-id="chapter-system" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-system-d4445e3198-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-system.html" id="chapter-system-d4445e3198-link">系统</a><div class="wh-tooltip"><p class="shortdesc"></p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="chapter-memory-d4445e4054" class="topicref" data-id="chapter-memory" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-memory-d4445e4054-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-memory-sdk.html" id="chapter-memory-d4445e4054-link">存储</a><div class="wh-tooltip"><p class="shortdesc">SDMC、SPI NAND、SPI NOR 等存储模块的介绍和使用说明。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_mcc_32s_nbc-d4445e4438" class="topicref" data-id="concept_mcc_32s_nbc" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_mcc_32s_nbc-d4445e4438-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-multi-media-sdk.html" id="concept_mcc_32s_nbc-d4445e4438-link">多媒体</a><div class="wh-tooltip"><p class="shortdesc">GE、VE、Display、DVP、MPP、MPP 播放器等多媒体模块的介绍和使用说明。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_nww_hzh_pzb-d4445e5947" class="topicref" data-id="concept_nww_hzh_pzb" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_nww_hzh_pzb-d4445e5947-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-interface-sdk.html" id="concept_nww_hzh_pzb-d4445e5947-link">接口</a><div class="wh-tooltip"><p class="shortdesc">CAN、CIR、GPAI、GPIO、I2C、PSADC、PWM 等接口模块的介绍和使用说明。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="chapter-safety-d4445e7944" class="topicref" data-id="chapter-safety" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-safety-d4445e7944-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-safety-sdk.html" id="chapter-safety-d4445e7944-link">安全</a><div class="wh-tooltip"><p class="shortdesc">SPI ENC、CE、eFuse 等安全模块的介绍和使用说明。</p></div></div></div></li></ul></li></ul></div>
|
||
|
||
</div>
|
||
</nav>
|
||
|
||
|
||
<div class="col-lg-9 col-md-9 col-sm-12" id="wh_topic_body">
|
||
<button id="wh_close_publication_toc_button" class="close-toc-button d-none" aria-label="Toggle publishing table of content" aria-controls="wh_publication_toc" aria-expanded="true">
|
||
<span class="close-toc-icon-container">
|
||
<span class="close-toc-icon"></span>
|
||
</span>
|
||
</button>
|
||
|
||
|
||
<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" title="Edit this document" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/boot/load-SDFAT32.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">SDFAT32 加载</h1>
|
||
|
||
<div class="date inPage">15 Jan 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="d122870e33__20250123155211">SDFAT32 启动方式更为简单，不需要专业的烧录工具进行烧写，只需要将镜像文件复制到 SD 卡即可。</p>
|
||
<div class="- topic/p p" data-ofbid="d122870e36__20250123155211">
|
||
<figure class="- topic/fig fig fignone" id="sdfat32__fig_vhv_tbx_5dc" data-ofbid="sdfat32__fig_vhv_tbx_5dc">
|
||
|
||
<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="sdfat32__image_igl_w1h_bzb" src="../../../images/boot/load_diff.png"/></div><br/>
|
||
<figcaption data-caption-side="bottom" class="- topic/title title figcapcenter"><span class="figtitleprefix fig--title-label">图<span class="fig--title-label-number"> 1</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">MMC 与 SD 卡启动差异</span></figcaption></figure>
|
||
</div>
|
||
<div class="- topic/p p" data-ofbid="d122870e47__20250123155211">SDFAT32 是基于 MMC 建立的，加载程序也在 <span class="+ topic/ph sw-d/filepath ph filepath">spl_mmc.c</span> 中实现：<ol class="- topic/ol ol" id="sdfat32__ol_mft_vbx_5dc" data-ofbid="sdfat32__ol_mft_vbx_5dc">
|
||
<li class="- topic/li li" data-ofbid="d122870e54__20250123155211">使用下列宏参数将 <span class="+ topic/keyword pr-d/apiname keyword apiname">spl_mmc_load_image</span> 函数添加到
|
||
.u_boot_list_2_spl_image_loader_*
|
||
段。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="sdfat32__codeblock_tx1_xbx_5dc" data-ofbid="sdfat32__codeblock_tx1_xbx_5dc"><code>SPL_LOAD_IMAGE_METHOD(“MMC2”, <span class="hl-number">0</span>, BOOT_DEVICE_MMC2, spl_mmc_load_image);</code></pre></li>
|
||
<li class="- topic/li li" data-ofbid="d122870e62__20250123155211">
|
||
<div class="- topic/p p" data-ofbid="d122870e64__20250123155211">在 <code class="+ topic/ph pr-d/codeph ph codeph">board_init_r(gd_t *dummy1, ulong dummy2)</code> 函数中，调用
|
||
<span class="+ topic/keyword pr-d/apiname keyword apiname">boot_from_devices</span> 从 device
|
||
中选择启动介质，通过启动介质选择对应的加载程序，获取启动镜像。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="sdfat32__codeblock_t2y_ksy_c1c" data-ofbid="sdfat32__codeblock_t2y_ksy_c1c"><code><em class="hl-comment">// source/uboot-2021.10/common/spl/spl.c</em>
|
||
boot_from_devices
|
||
| <em class="hl-comment">// 这里会传递一个空的 info 结构体，以及传递一个启动设备的列表，这里为第一个值为 BOOT_DEVICE_MMC2</em>
|
||
|->spl_ll_find_loader(bootdev); <em class="hl-comment">// bootdev=BOOT_DEVICE_MMC2,根据 bootdev 查找 spl_load_image 指针</em>
|
||
|->spl_load_image(spl_image, loader); <em class="hl-comment">// 这里已经获取到对应启动设备的加载器</em>
|
||
|->loader->load_image(spl_image, &bootdev); <em class="hl-comment">// 调用加载器的实现函数 spl_mmc_load_image</em></code></pre></div>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d122870e76__20250123155211">
|
||
<div class="- topic/p p" data-ofbid="d122870e78__20250123155211">进入到对应启动介质的加载程序中，通过 NAME 指定启动镜像配置文件，从中获取镜像在 SD
|
||
卡中的实际地址。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="sdfat32__codeblock_dyf_lsy_c1c" data-ofbid="sdfat32__codeblock_dyf_lsy_c1c"><code><em class="hl-comment">// source/uboot-2021.10/common/spl/spl_fat.c</em>
|
||
spl_mmc_load_image
|
||
|->spl_mmc_load(spl_image, bootdev,...); <em class="hl-comment">// 这里 CONFIG_SPL_FS_LOAD_PAYLOAD_NAME=bootcfg.txt</em>
|
||
|->spl_mmc_find_device(&mmc, bootdev->boot_device); <em class="hl-comment">// 先找 mmc 设备</em>
|
||
|->mmc_init(mmc); <em class="hl-comment">// 再进行 mmc 设备的初始化</em>
|
||
|->spl_mmc_boot_mode(bootdev->boot_device);
|
||
| <em class="hl-comment">// 选择启动方式，这里获取到的是 FS 方式启动</em>
|
||
|->spl_mmc_do_fs_boot(spl_image, mmc, filename); <em class="hl-comment">// filename 为 bootcfg.txt</em>
|
||
|->aic_spl_load_image_fat(spl_image, mmc_get_blk_desc(mmc), filename);
|
||
|->blk_dread(cur_dev, <span class="hl-number">0</span>, <span class="hl-number">1</span>, header);
|
||
| <em class="hl-comment">// 读取 SD 卡的第 0 块。</em>
|
||
|->check_identifier(header); <em class="hl-comment">// 检测 SD 卡的分区类型选择启动方式</em>
|
||
|->load_image_from_mbr_part_fat32(header, filename); <em class="hl-comment">// 以 MBR 分区格式去加载镜像</em>
|
||
|->blk_dread(cur_dev, part.lba_start, <span class="hl-number">1</span>, header);
|
||
| <em class="hl-comment">// 读取 LBA 起始地址</em>
|
||
|->check_identifier(header); <em class="hl-comment">// 检测 SD 卡分区类型是否为 FAT32</em>
|
||
|->load_image_from_raw_volume_fat32(part.lba_start, header, filename);
|
||
| <em class="hl-comment">// 获取 BPB 内容</em>
|
||
|->load_image_file(header, filename);
|
||
|->aic_fat_read_file(filename, (u8 *)header, <span class="hl-number">0</span>, <span class="hl-number">1024</span>, &actread);
|
||
| <em class="hl-comment">// 查找并读取 txt 文件内容到 header 地址</em>
|
||
|->boot_cfg_parse_file((u8 *)header, actread, <span class="hl-string">"boot1"</span>, ...);
|
||
| <em class="hl-comment">// 解析 txt 信息，获取 image 名称，解析 Boot 的大小，以及相对</em>
|
||
| <em class="hl-comment">// image 文件中 Boot 所在的偏移地址</em>
|
||
|->aic_fat_read_file(imgname, header, ...); <em class="hl-comment">//读取 image 文件的 header</em>
|
||
|->spl_parse_image_header(spl_image, header);
|
||
| <em class="hl-comment">// 解析 Boot 中前 64 个字节内容，设置加载地址</em>
|
||
|->aic_fat_read_file(imgname, (u8 *)spl_image->load_addr, ...);
|
||
| <em class="hl-comment">// 读取 Boot 镜像到 spl_image->load_addr 地址。</em>
|
||
|->board_init_r(); <em class="hl-comment">// 跳转回 board_init_r()继续执行</em></code></pre></div>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d122870e84__20250123155211">
|
||
<div class="- topic/p p" data-ofbid="d122870e86__20250123155211">读取 Boot 镜像到内存后，跳转回
|
||
board_init_r()继续执行<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="sdfat32__codeblock_ukk_lsy_c1c" data-ofbid="sdfat32__codeblock_ukk_lsy_c1c"><code><em class="hl-comment">// source/uboot-2021.10/common/spl/spl.c</em>
|
||
board_init_r()
|
||
|->spl_perform_fixups <em class="hl-comment">// vendor hook，用于修改 tree 传递参数</em>
|
||
|->jump_to_image_no_args(&spl_image);
|
||
|->image_entry = (image_entry_withargs_t)spl_image->entry_point; <em class="hl-comment">// 获取 Boot 加载地址</em>
|
||
|->set_boot_device(boot_param, aic_get_boot_device()); <em class="hl-comment">// 设置启动介质</em>
|
||
|->set_boot_reason(boot_param, aic_get_boot_reason()); <em class="hl-comment">// 设置启动原因（冷启动或者热启动）</em>
|
||
|->image_entry(boot_param, cur_tm); <em class="hl-comment">// 进入 Boot 执行，并传递一些参数</em>
|
||
</code></pre></div>
|
||
</li>
|
||
</ol></div>
|
||
</div>
|
||
</article></main></div>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
</div>
|
||
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
</div>
|
||
<footer class="navbar navbar-default wh_footer">
|
||
<div class=" footer-container mx-auto ">
|
||
<title>footer def</title>
|
||
<style><!--
|
||
|
||
.p1 {
|
||
font-family: FangZhengShuSong, Times, serif;
|
||
}
|
||
.p2 {
|
||
font-family: Arial, Helvetica, sans-serif;
|
||
}
|
||
.p3 {
|
||
font-family: "Lucida Console", "Courier New", monospace;
|
||
}
|
||
|
||
--></style>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<div class="webhelp.fragment.footer">
|
||
<p class="p1">Copyright © 2019-2024 广东匠芯创科技有限公司. All rights reserved.</p>
|
||
</div><div>
|
||
<div class="generation_time">
|
||
Update Time: 2025-01-23
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</footer>
|
||
|
||
<button id="go2top" class="d-print-none" title="返回顶部">
|
||
<span class="oxy-icon oxy-icon-up"></span>
|
||
</button>
|
||
|
||
<div id="modal_img_large" class="modal">
|
||
<span class="close oxy-icon oxy-icon-remove"></span>
|
||
<div id="modal_img_container"></div>
|
||
<div id="caption"></div>
|
||
</div>
|
||
|
||
|
||
<script src="${pd}/publishing/publishing-styles-AIC-template/js/custom.js" defer="defer"></script>
|
||
|
||
|
||
</body>
|
||
</html> |