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<li class="toctree-l3"><a class="reference internal" href="../adb/index.html"><code class="docutils literal notranslate"><span class="pre">adb</span></code> ADB daemon application</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../dumpstack/index.html"><code class="docutils literal notranslate"><span class="pre">dumpstack</span></code> dumpstack tool for show the task backtrace</a></li>
<li class="toctree-l3 current"><a class="current reference internal" href="#"><code class="docutils literal notranslate"><span class="pre">fastboot</span></code> fastbootd</a><ul>
<li class="toctree-l4"><a class="reference internal" href="#prepare">Prepare</a></li>
<li class="toctree-l4"><a class="reference internal" href="#commands">Commands</a></li>
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<section id="fastboot-fastbootd">
<h1><code class="docutils literal notranslate"><span class="pre">fastboot</span></code> fastbootd<a class="headerlink" href="#fastboot-fastbootd" title="Permalink to this heading"></a></h1>
<section id="prepare">
<h2>Prepare<a class="headerlink" href="#prepare" title="Permalink to this heading"></a></h2>
<ul class="simple">
<li><p>Check fastboot tool(Host): <code class="code docutils literal notranslate"><span class="pre">fastboot</span> <span class="pre">--version</span></code></p></li>
<li><p>Download fastboot tool and install(Host): <a class="reference external" href="https://developer.android.com/tools/releases/platform-tools">platform-tools</a></p></li>
<li><p>Enable the fastbootd application(Device): <code class="code docutils literal notranslate"><span class="pre">CONFIG_USBFASTBOOT=y</span></code> and <code class="code docutils literal notranslate"><span class="pre">CONFIG_SYSTEM_FASTBOOTD=y</span></code></p></li>
<li><p>Start fastbootd(Device): <code class="code docutils literal notranslate"><span class="pre">fastbootd</span> <span class="pre">&amp;</span></code></p></li>
</ul>
</section>
<section id="commands">
<h2>Commands<a class="headerlink" href="#commands" title="Permalink to this heading"></a></h2>
<ul class="simple">
<li><p><code class="code docutils literal notranslate"><span class="pre">fastboot</span> <span class="pre">reboot</span> <span class="pre">[FLAG]</span></code>: Reboot the device, more details for <code class="code docutils literal notranslate"><span class="pre">[FLAG]</span></code>: <a class="reference external" href="https://github.com/apache/nuttx-apps/blob/master/nshlib/nsh_syscmds.c#L114">g_resetflag</a> and <a class="reference external" href="https://github.com/apache/nuttx/blob/master/include/sys/boardctl.h#L458">boardioc_softreset_subreason_e</a></p></li>
<li><p><code class="code docutils literal notranslate"><span class="pre">fastboot</span> <span class="pre">flash</span> <span class="pre">&lt;PARTITION&gt;</span> <span class="pre">&lt;FILENAME&gt;</span></code>: Flash partition <code class="code docutils literal notranslate"><span class="pre">&lt;PARTITION&gt;</span></code> using the given <code class="code docutils literal notranslate"><span class="pre">&lt;FILENAME&gt;</span></code></p></li>
<li><p><code class="code docutils literal notranslate"><span class="pre">fastboot</span> <span class="pre">erase</span> <span class="pre">&lt;PARTITION&gt;</span></code>: Erase given partition</p></li>
<li><dl class="simple">
<dt>Get Variables</dt><dd><ul>
<li><p><code class="code docutils literal notranslate"><span class="pre">fastboot</span> <span class="pre">getvar</span> <span class="pre">product</span></code>: Get product name</p></li>
<li><p><code class="code docutils literal notranslate"><span class="pre">fastboot</span> <span class="pre">getvar</span> <span class="pre">kernel</span></code>: Get kernel name</p></li>
<li><p><code class="code docutils literal notranslate"><span class="pre">fastboot</span> <span class="pre">getvar</span> <span class="pre">version</span></code>: Get OS version string</p></li>
<li><p><code class="code docutils literal notranslate"><span class="pre">fastboot</span> <span class="pre">getvar</span> <span class="pre">slot-count</span></code>: Get slot count</p></li>
<li><p><code class="code docutils literal notranslate"><span class="pre">fastboot</span> <span class="pre">getvar</span> <span class="pre">max-download-size</span></code>: Get max download size</p></li>
</ul>
</dd>
</dl>
</li>
<li><dl class="simple">
<dt>OEM</dt><dd><ul>
<li><p><code class="code docutils literal notranslate"><span class="pre">fastboot</span> <span class="pre">oem</span> <span class="pre">filedump</span> <span class="pre">&lt;PARTITION&gt;</span> <span class="pre">[OFFSET]</span> <span class="pre">[LENGTH]</span></code>: Get <code class="code docutils literal notranslate"><span class="pre">&lt;LENGTH&gt;</span></code> (full by default) bytes of <code class="code docutils literal notranslate"><span class="pre">&lt;PARTITION&gt;</span></code> from <code class="code docutils literal notranslate"><span class="pre">&lt;OFFSET&gt;</span></code> (zero by default)</p></li>
<li><p><code class="code docutils literal notranslate"><span class="pre">fastboot</span> <span class="pre">oem</span> <span class="pre">memdump</span> <span class="pre">&lt;ADDRESS&gt;</span> <span class="pre">&lt;LENGTH&gt;</span></code>: Dump <code class="code docutils literal notranslate"><span class="pre">&lt;LENGTH&gt;</span></code> bytes memory from address <code class="code docutils literal notranslate"><span class="pre">&lt;ADDRESS&gt;</span></code></p></li>
</ul>
</dd>
</dl>
</li>
<li><p><code class="code docutils literal notranslate"><span class="pre">fastboot</span> <span class="pre">get_staged</span> <span class="pre">&lt;OUT_FILE&gt;</span></code>: Writes data staged by the last command to file <code class="code docutils literal notranslate"><span class="pre">&lt;OUT_FILE&gt;</span></code>. e.g. “oem filedump” and “oem memdump”</p></li>
</ul>
</section>
<section id="examples">
<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this heading"></a></h2>
<ul class="simple">
<li><p>Exit fastboot mode: <code class="code docutils literal notranslate"><span class="pre">fastboot</span> <span class="pre">reboot</span></code></p></li>
<li><p>Flash app.bin to partition /dev/app: <code class="code docutils literal notranslate"><span class="pre">fastboot</span> <span class="pre">flash</span> <span class="pre">app</span> <span class="pre">./app.bin</span></code></p></li>
<li><p>Erase partition /dev/userdata: <code class="code docutils literal notranslate"><span class="pre">fastboot</span> <span class="pre">erase</span> <span class="pre">userdata</span></code></p></li>
<li><p>Dump partition /dev/app: <code class="code docutils literal notranslate"><span class="pre">fastboot</span> <span class="pre">filedump</span> <span class="pre">/dev/app</span></code> and then <code class="code docutils literal notranslate"><span class="pre">fastboot</span> <span class="pre">get_staged</span> <span class="pre">./dump_app.bin</span></code></p></li>
<li><p>Dump memory from 0x44000000 to 0x440b6c00: <code class="code docutils literal notranslate"><span class="pre">fastboot</span> <span class="pre">oem</span> <span class="pre">memdump</span> <span class="pre">0x44000000</span> <span class="pre">0xb6c00</span></code> and then <code class="code docutils literal notranslate"><span class="pre">fastboot</span> <span class="pre">get_staged</span> <span class="pre">./mem_44000000_440b6c00.bin</span></code></p></li>
</ul>
</section>
</section>
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