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<div class="date inPage">16 May 2025</div><div style="color: gray;">
|
||
Read time: 1 minute(s)
|
||
</div>
|
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<div class="- topic/body concept/conbody body conbody"><p class="- topic/shortdesc shortdesc"></p>
|
||
<p class="- topic/p p" data-ofbid="d156522e30__20250519091522">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="d156522e33__20250519091522">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
|
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然后继续跳转执行用户的程序。</p>
|
||
<div class="- topic/p p" data-ofbid="d156522e36__20250519091522">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="d156522e40__20250519091522">
|
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<div class="- topic/p p" data-ofbid="d156522e42__20250519091522">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="d156522e46__20250519091522">
|
||
<div class="- topic/p p" data-ofbid="d156522e48__20250519091522">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="d156522e52__20250519091522">
|
||
<p class="- topic/p p" data-ofbid="d156522e54__20250519091522">tools/scripts/mk_image.py</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d156522e58__20250519091522">
|
||
<p class="- topic/p p" data-ofbid="d156522e60__20250519091522">tools/scripts/mk_private_resource.py</p>
|
||
</li>
|
||
</ul></div>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d156522e66__20250519091522">
|
||
<div class="- topic/p p" data-ofbid="d156522e68__20250519091522">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="d156522e72__20250519091522">
|
||
<p class="- topic/p p" data-ofbid="d156522e74__20250519091522">bsp/artinchip/sys/d13x/d13x.pbp</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d156522e78__20250519091522">
|
||
<p class="- topic/p p" data-ofbid="d156522e80__20250519091522">target/d13x/demo88-nor/pack/pbp_cfg.json</p>
|
||
</li>
|
||
</ul></div>
|
||
</li>
|
||
</ul></div>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d156522e88__20250519091522">配置启动镜像<div class="- topic/p p" data-ofbid="d156522e90__20250519091522">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="d156522e95__20250519091522">
|
||
<p class="- topic/p p" data-ofbid="d156522e97__20250519091522"><strong class="+ topic/ph hi-d/b ph b">生成镜像</strong>
|
||
</p>
|
||
<div class="- topic/p p" data-ofbid="d156522e102__20250519091522">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="d156522e106__20250519091522">
|
||
<p class="- topic/p p" data-ofbid="d156522e108__20250519091522">app.bin</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d156522e112__20250519091522">
|
||
<p class="- topic/p p" data-ofbid="d156522e114__20250519091522">d13x.pbp</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d156522e118__20250519091522">
|
||
<p class="- topic/p p" data-ofbid="d156522e120__20250519091522">pbp_cfg.json</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d156522e124__20250519091522">
|
||
<p class="- topic/p p" data-ofbid="d156522e126__20250519091522">mk_image.py</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d156522e130__20250519091522">
|
||
<p class="- topic/p p" data-ofbid="d156522e132__20250519091522">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="d156522e139__20250519091522">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>
|
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</li>
|
||
</ol></div>
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