doc/topics/sdk/d13x_bare_boot/init-config-prsam.html

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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/d13x_bare_boot/init-config-prsam.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">初始化并使用 PSRAM</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;">
                    Read time: 1 minute(s)
                </div><div class="- topic/body concept/conbody body conbody"><p class="- topic/shortdesc shortdesc"></p><p class="- topic/p p" data-ofbid="d136393e20__20250121171607">对于合封 PSRAM 的芯片，如果需要使用 PSRAM，可以使用 PBP 程序对 PSRAM 进行初始化。</p><p class="- topic/p p" data-ofbid="d136393e22__20250121171607">PBP 程序是 Boot ROM 运行的程序，设计为 Boot ROM 的扩展，用于做 DRAM/PSRAM 的初始化。 PBP 程序运行完之后，可以直接返回 Boot ROM
            然后继续跳转执行用户的程序。</p><div class="- topic/p p" data-ofbid="d136393e24__20250121171607">当前 PBP 程序可以完成以下功能：<ol class="- topic/ol ol" id="init-config-prsam__ul_ggg_g2r_gdc" data-ofbid="init-config-prsam__ul_ggg_g2r_gdc"><li class="- topic/li li" data-ofbid="d136393e27__20250121171607">
                    <div class="- topic/p p" data-ofbid="d136393e29__20250121171607">配置下列参数，完成 PSRAM 的初始化。<ul class="- topic/ul ul" id="init-config-prsam__ul_mc3_j2r_gdc" data-ofbid="init-config-prsam__ul_mc3_j2r_gdc"><li class="- topic/li li" data-ofbid="d136393e32__20250121171607">
                                <div class="- topic/p p" data-ofbid="d136393e34__20250121171607">需要使用下列工具：<ul class="- topic/ul ul" id="init-config-prsam__ul_jc5_j2r_gdc" data-ofbid="init-config-prsam__ul_jc5_j2r_gdc"><li class="- topic/li li" data-ofbid="d136393e37__20250121171607">
                                            <p class="- topic/p p" data-ofbid="d136393e39__20250121171607">tools/scripts/mk_image.py</p>
                                        </li><li class="- topic/li li" data-ofbid="d136393e42__20250121171607">
                                            <p class="- topic/p p" data-ofbid="d136393e44__20250121171607">tools/scripts/mk_private_resource.py</p>
                                        </li></ul></div>
                            </li><li class="- topic/li li" data-ofbid="d136393e48__20250121171607">
                                <div class="- topic/p p" data-ofbid="d136393e50__20250121171607">需要使用下列文件：<ul class="- topic/ul ul" id="init-config-prsam__ul_hzz_j2r_gdc" data-ofbid="init-config-prsam__ul_hzz_j2r_gdc"><li class="- topic/li li" data-ofbid="d136393e53__20250121171607">
                                            <p class="- topic/p p" data-ofbid="d136393e55__20250121171607">bsp/artinchip/sys/d13x/d13x.pbp</p>
                                        </li><li class="- topic/li li" data-ofbid="d136393e58__20250121171607">
                                            <p class="- topic/p p" data-ofbid="d136393e60__20250121171607">target/d13x/demo88-nor/pack/pbp_cfg.json</p>
                                        </li></ul></div>
                            </li></ul></div>
                </li><li class="- topic/li li" data-ofbid="d136393e65__20250121171607">配置启动镜像<div class="- topic/p p" data-ofbid="d136393e67__20250121171607">下列启动镜像 image_cfg.json
                        文件的配置，可供参考：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="init-config-prsam__codeblock_enq_22r_gdc" data-ofbid="init-config-prsam__codeblock_enq_22r_gdc">{
     <span class="hl-string">"pre-process"</span>: { <em class="hl-comment">// Pre-proccess to generate image components from raw data</em>
        <span class="hl-string">"aicimage"</span>: { <em class="hl-comment">// Create aic boot image</em>
             <span class="hl-string">"app.aic"</span>: {
                <span class="hl-string">"loader"</span>: {
                    <span class="hl-string">"file"</span>: <span class="hl-string">"app.bin"</span>,
                    <span class="hl-string">"load address"</span>: <span class="hl-string">"0x30044000"</span>,
                    <span class="hl-string">"entry point"</span>:  <span class="hl-string">"0x30044100"</span>, <em class="hl-comment">// 256 byte aic header</em>
                },
                <span class="hl-string">"resource"</span>: {
                    <span class="hl-string">"pbp"</span>: <span class="hl-string">"d13x.pbp"</span>,
                    <span class="hl-string">"private"</span>: <span class="hl-string">"pbp_cfg.bin"</span>,
                },
            },
        },
    },
}
</pre></div></li><li class="- topic/li li" data-ofbid="d136393e71__20250121171607">
                    <p class="- topic/p p" data-ofbid="d136393e73__20250121171607"><strong class="+ topic/ph hi-d/b ph b">生成镜像</strong>
                    </p>
                    <div class="- topic/p p" data-ofbid="d136393e78__20250121171607">将上述文件放到一个目录：<ul class="- topic/ul ul" id="init-config-prsam__ul_ubs_n2r_gdc" data-ofbid="init-config-prsam__ul_ubs_n2r_gdc"><li class="- topic/li li" data-ofbid="d136393e81__20250121171607">
                                <p class="- topic/p p" data-ofbid="d136393e83__20250121171607">app.bin</p>
                            </li><li class="- topic/li li" data-ofbid="d136393e86__20250121171607">
                                <p class="- topic/p p" data-ofbid="d136393e88__20250121171607">d13x.pbp</p>
                            </li><li class="- topic/li li" data-ofbid="d136393e91__20250121171607">
                                <p class="- topic/p p" data-ofbid="d136393e93__20250121171607">pbp_cfg.json</p>
                            </li><li class="- topic/li li" data-ofbid="d136393e96__20250121171607">
                                <p class="- topic/p p" data-ofbid="d136393e98__20250121171607">mk_image.py</p>
                            </li><li class="- topic/li li" data-ofbid="d136393e101__20250121171607">
                                <p class="- topic/p p" data-ofbid="d136393e103__20250121171607">mk_private_resource.py</p>
                            </li></ul><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="init-config-prsam__codeblock_fnq_22r_gdc" data-ofbid="init-config-prsam__codeblock_fnq_22r_gdc">mk_private_resource.py -l pbp_cfg.json -o pbp_cfg.bin
mk_image.py -p -c image_cfg.json -d .
</pre></div>
                    <p class="- topic/p p" data-ofbid="d136393e109__20250121171607">此时生成的 <span class="+ topic/ph sw-d/filepath ph filepath">app.aic</span> 即包含了 PSRAM 初始化代码，并且在 <span class="+ topic/ph sw-d/filepath ph filepath">app.aic</span>
                        运行之前已经执行。</p>
                </li></ol></div></div></article></main></div>
                        
                        
                        
                        
                        
                        
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