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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic topic" 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/spinor/spinor_design_guide.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">设计说明</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;">
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Read time: 4 minute(s)
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</div><div class="- topic/body body"><section class="- topic/section section" id="id__section_avt_g53_ddc" data-ofbid="id__section_avt_g53_ddc"><h2 class="- topic/title title sectiontitle">Baremetal 源码说明</h2>
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<div class="table-container"><table class="- topic/table table colwidths-given docutils align-default frame-all" id="id__table_ctj_f53_ddc" data-ofbid="id__table_ctj_f53_ddc" 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">Baremetal 源码说明</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_ctj_f53_ddc__entry__1">相关模块</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_ctj_f53_ddc__entry__2">源码路径</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ctj_f53_ddc__entry__1">Application</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ctj_f53_ddc__entry__2"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/examples_bare/mtd.c</span></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ctj_f53_ddc__entry__1">mtd</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ctj_f53_ddc__entry__2"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/drv_bare/mtd/</span></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ctj_f53_ddc__entry__1">SFUD</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ctj_f53_ddc__entry__2">
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<div class="- topic/div div">
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<div class="- topic/div div"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/peripheral/spinor_sfud</span></div>
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<div class="- topic/div div"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/drv_bare/spinor/sfud_port.c</span></div>
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</div>
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</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_ctj_f53_ddc__entry__1">qspi</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_ctj_f53_ddc__entry__2"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/hal/qspi/hal_qspi.c</span></td></tr></tbody></table></div>
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<div class="- topic/note note note note_note" id="id__note_dlr_qn3_ddc" data-ofbid="id__note_dlr_qn3_ddc"><span class="note__title">注：</span>
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<p class="- topic/p p" data-ofbid="d187135e74__20250121171628">用户可以参考 <span class="+ topic/ph sw-d/filepath ph filepath">bsp/examples_bare/mtd.c</span> 和
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<span class="+ topic/ph sw-d/filepath ph filepath">bsp/examples_bare/test-spinor/spinor.c</span> 进行测试开发。</p>
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</div>
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</section><section class="- topic/section section" id="id__section_bvt_g53_ddc" data-ofbid="id__section_bvt_g53_ddc"><h2 class="- topic/title title sectiontitle">Baremetal 层次关系</h2>
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<figure class="- topic/fig fig fignone" id="id__fig_dtj_f53_ddc" data-ofbid="id__fig_dtj_f53_ddc"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="id__image_etj_f53_ddc" src="../../../images/spinor/spinor_bar.png" alt="bar_spinor"/></div><br/></figure>
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<div class="- topic/note note note note_note" id="id__note_elr_qn3_ddc" data-ofbid="id__note_elr_qn3_ddc"><span class="note__title">注：</span>
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<p class="- topic/p p" data-ofbid="d187135e96__20250121171628">用户开发项目，在 MTD 层上开发, SFUD 层上开发因为地址设置不当可能会破坏 spl、os 分区的数据。</p>
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</div>
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</section><section class="- topic/section section" id="id__section_w4m_h53_ddc" data-ofbid="id__section_w4m_h53_ddc"><h2 class="- topic/title title sectiontitle">Baremetal 关键流程</h2>
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<div class="- topic/div div section" id="id__spi-nor">
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<strong class="+ topic/ph hi-d/b ph b">SPI NOR 初始化流程</strong>
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<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_pbn_353_ddc" data-ofbid="id__codeblock_pbn_353_ddc">mtd_probe <em class="hl-comment">//bsp/artinchip/drv_bare/mtd/mtd_probe.c</em>
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|-> sfud_probe(AIC_BOOTLOADER_SPINOR_QSPI_ID); <em class="hl-comment">//bsp/artinchip/drv_bare/spinor/sfud_port.c</em>
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|-> get_qspi_by_index(spi_bus); <em class="hl-comment">//获取 aic_qspi_bus 对象</em>
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|
|
|-> hal_qspi_master_init(&qspi->handle, &cfg); <em class="hl-comment">//初始化 qspi 配置</em>
|
|||
|
|
|-> hal_qspi_master_dma_config(&qspi->handle, &dmacfg); <em class="hl-comment">//初始化 DMA</em>
|
|||
|
|
|-> hal_qspi_master_set_bus_freq(&qspi->handle, qspi->bus_hz); <em class="hl-comment">//配置时钟</em>
|
|||
|
|
|-> sfud_device_init(&qspi->attached_flash); <em class="hl-comment">//bsp/peripheral/spinor_sfud/src/sfud.c</em>
|
|||
|
|
|-> hardware_init(flash);
|
|||
|
|
|-> sfud_spi_port_init(flash); <em class="hl-comment">//bsp/artinchip/drv_bare/spinor/sfud_port.c</em>
|
|||
|
|
|-> flash->spi.wr = spi_write_read; <em class="hl-comment">//提供读写接口</em>
|
|||
|
|
|-> flash->spi.qspi_read = (<strong class="hl-keyword">void</strong> *)qspi_read; <em class="hl-comment">//提供快速读取接口</em>
|
|||
|
|
|-> read_jedec_id(flash); <em class="hl-comment">//读取设备 id</em>
|
|||
|
|
|-> sfud_read_sfdp(flash); <em class="hl-comment">//自动识别 SPI NOR</em>
|
|||
|
|
|-> sfud_qspi_fast_read_enable(&qspi->attached_flash, <span class="hl-number">4</span>); <em class="hl-comment">//使能快速读取模式</em>
|
|||
|
|
|-> part = mtd_parts_parse(NOR_MTD_PARTS); <em class="hl-comment">//解析分区信息</em>
|
|||
|
|
|-> mtd->ops.erase = sfud_mtd_erase;
|
|||
|
|
|-> mtd->ops.read = sfud_mtd_read;
|
|||
|
|
|-> mtd->ops.write = sfud_mtd_write;
|
|||
|
|
|-> mtd_add_device(mtd); <em class="hl-comment">//添加 mtd 分区</em></pre></div>
|
|||
|
|
<div class="- topic/div div section" id="id__id4">
|
|||
|
|
<strong class="+ topic/ph hi-d/b ph b">SPI NOR 读数据流程</strong>
|
|||
|
|
<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_nbr_353_ddc" data-ofbid="id__codeblock_nbr_353_ddc">mtd_read <em class="hl-comment">//bsp/artinchip/drv_bare/mtd/mtdcore.c</em>
|
|||
|
|
|-> sfud_mtd_read(); <em class="hl-comment">//bsp/artinchip/drv_bare/spinor/sfud_port.c</em>
|
|||
|
|
|-> sfud_read(flash, start, dolen, data); <em class="hl-comment">//bsp/peripheral/spinor_sfud/src/sfud.c</em>
|
|||
|
|
|-> sfud_read_data(flash, addr, dolen, p);
|
|||
|
|
|-> qspi_read(); <em class="hl-comment">//bsp/artinchip/drv_bare/spinor/sfud_port.c</em></pre></div>
|
|||
|
|
</section><section class="- topic/section section" id="id__section_lbw_353_ddc" data-ofbid="id__section_lbw_353_ddc"><h2 class="- topic/title title sectiontitle">Baremetal 应用接口设计</h2>
|
|||
|
|
|
|||
|
|
<div class="table-container"><table class="- topic/table table colwidths-given docutils align-default frame-all" id="id__table_ftj_f53_ddc" data-ofbid="id__table_ftj_f53_ddc" 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"> 2</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">mtd_probe</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
函数原型
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">int mtd_probe(void);</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
功能说明
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">初始化所有 mtd 设备</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
返回值
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div">0: 成功</div>
|
|||
|
|
<div class="- topic/div div">其他: 失败</div>
|
|||
|
|
</div>
|
|||
|
|
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0">
|
|||
|
|
注意事项
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-0">只有初始化 mtd 设备之后, 才能正常使用其它函数</td></tr></tbody></table></div>
|
|||
|
|
<div class="table-container"><table class="- topic/table table colwidths-given docutils align-default frame-all" id="id__table_gtj_f53_ddc" data-ofbid="id__table_gtj_f53_ddc" 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"> 3</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">mtd_add_device</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
函数原型
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">int mtd_add_device(struct mtd_dev *mtd);</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
功能说明
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">增加 mtd 设备</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
参数定义
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div">struct mtd_dev *mtd</div>
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div">mtd 设备对象</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
返回值
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div">0: 成功</div>
|
|||
|
|
<div class="- topic/div div">其他: 失败</div>
|
|||
|
|
</div>
|
|||
|
|
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0">
|
|||
|
|
注意事项
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-0">-</td></tr></tbody></table></div>
|
|||
|
|
<div class="table-container"><table class="- topic/table table colwidths-given docutils align-default frame-all" id="id__table_htj_f53_ddc" data-ofbid="id__table_htj_f53_ddc" 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"> 4</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">mtd_get_device_count</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
函数原型
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">u32 mtd_get_device_count(void);</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
功能说明
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">获取注册的 mtd 设备个数</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
返回值
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div"> 注册的 mtd 设备个数</div>
|
|||
|
|
</div>
|
|||
|
|
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0">
|
|||
|
|
注意事项
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-0">-</td></tr></tbody></table></div>
|
|||
|
|
<div class="table-container"><table class="- topic/table table colwidths-given docutils align-default frame-all" id="id__table_itj_f53_ddc" data-ofbid="id__table_itj_f53_ddc" 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"> 5</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">mtd_get_device_by_id</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
函数原型
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">struct mtd_dev *mtd_get_device_by_id(u32 id);</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
功能说明
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">通过索引号获取 mtd 设备句柄</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
返回值
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div">mtd 设备句柄</div>
|
|||
|
|
<div class="- topic/div div">为空：失败</div>
|
|||
|
|
</div>
|
|||
|
|
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0">
|
|||
|
|
注意事项
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-0">-</td></tr></tbody></table></div>
|
|||
|
|
<div class="table-container"><table class="- topic/table table colwidths-given docutils align-default frame-all" id="id__table_jtj_f53_ddc" data-ofbid="id__table_jtj_f53_ddc" 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"> 6</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">mtd_get_device</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
函数原型
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">struct mtd_dev *mtd_get_device(const char *name);</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
功能说明
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">通过分区名获取 mtd 设备句柄</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
参数定义
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div">char *name</div>
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div">mtd 分区名</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
返回值
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div">mtd 设备句柄</div>
|
|||
|
|
<div class="- topic/div div">为空：失败</div>
|
|||
|
|
</div>
|
|||
|
|
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0">
|
|||
|
|
注意事项
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-0">-</td></tr></tbody></table></div>
|
|||
|
|
<div class="table-container"><table class="- topic/table table colwidths-given docutils align-default frame-all" id="id__table_ktj_f53_ddc" data-ofbid="id__table_ktj_f53_ddc" 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"> 7</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">mtd_read</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
函数原型
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">int mtd_read(struct mtd_dev *mtd, u32 offset, u8 *data, u32
|
|||
|
|
len);</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
功能说明
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">读取 mtd 分区数据到缓冲区上</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
参数定义
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div">struct mtd_dev *mtd</div>
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div">mtd 分区设备句柄</div>
|
|||
|
|
</div>
|
|||
|
|
<div class="- topic/div div">u32 offset</div>
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div">偏移值</div>
|
|||
|
|
</div>
|
|||
|
|
<div class="- topic/div div">u8 *data</div>
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div"> 接收数据缓冲区</div>
|
|||
|
|
</div>
|
|||
|
|
<div class="- topic/div div">u32 len</div>
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div"> 接收数据长度</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
返回值
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div">0: 成功</div>
|
|||
|
|
<div class="- topic/div div">其他: 失败</div>
|
|||
|
|
</div>
|
|||
|
|
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0">
|
|||
|
|
注意事项
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-0">offset 与 page 对齐</td></tr></tbody></table></div>
|
|||
|
|
<div class="table-container"><table class="- topic/table table colwidths-given docutils align-default frame-all" id="id__table_ltj_f53_ddc" data-ofbid="id__table_ltj_f53_ddc" 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"> 8</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">mtd_erase</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
函数原型
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">int mtd_erase(struct mtd_dev *mtd, u32 offset, u32 len);</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
功能说明
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">擦除 mtd 分区某块区域的数据</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
参数定义
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div">struct mtd_dev *mtd</div>
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div">mtd 分区设备句柄</div>
|
|||
|
|
</div>
|
|||
|
|
<div class="- topic/div div">u32 offset</div>
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div">偏移值</div>
|
|||
|
|
</div>
|
|||
|
|
<div class="- topic/div div">u32 len</div>
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div"> 擦除数据长度</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
返回值
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">
|
|||
|
|
<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div">0: 成功</div>
|
|||
|
|
<div class="- topic/div div">其他: 失败</div>
|
|||
|
|
</div>
|
|||
|
|
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0">
|
|||
|
|
注意事项
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-0">offset 必须与 block 对齐</td></tr></tbody></table></div>
|
|||
|
|
<div class="table-container"><table class="- topic/table table colwidths-given docutils align-default frame-all" id="id__table_mtj_f53_ddc" data-ofbid="id__table_mtj_f53_ddc" 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"> 9</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">mtd_write</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
|
函数原型
|
|||
|
|
</td><td class="- topic/entry entry colsep-0 rowsep-1">int mtd_write(struct mtd_dev *mtd, u32 offset, u8 *data, u32
|
|||
|
|
len);</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
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功能说明
|
|||
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</td><td class="- topic/entry entry colsep-0 rowsep-1">写入缓冲区上的数据到 mtd 分区上</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
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参数定义
|
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</td><td class="- topic/entry entry colsep-0 rowsep-1">
|
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<div class="- topic/div div">
|
|||
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<div class="- topic/div div">struct mtd_dev *mtd</div>
|
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<div class="- topic/div div">
|
|||
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<div class="- topic/div div">mtd 分区设备句柄</div>
|
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</div>
|
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<div class="- topic/div div">u32 offset</div>
|
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<div class="- topic/div div">
|
|||
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<div class="- topic/div div">偏移值</div>
|
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</div>
|
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<div class="- topic/div div">u8 *data</div>
|
|||
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<div class="- topic/div div">
|
|||
|
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<div class="- topic/div div"> 发送缓冲区地址</div>
|
|||
|
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</div>
|
|||
|
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<div class="- topic/div div">u32 len</div>
|
|||
|
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<div class="- topic/div div">
|
|||
|
|
<div class="- topic/div div"> 擦除数据的长度</div>
|
|||
|
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</div>
|
|||
|
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</div>
|
|||
|
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</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1">
|
|||
|
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返回值
|
|||
|
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</td><td class="- topic/entry entry colsep-0 rowsep-1">
|
|||
|
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<div class="- topic/div div">
|
|||
|
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<div class="- topic/div div">0: 成功</div>
|
|||
|
|
<div class="- topic/div div">其他: 失败</div>
|
|||
|
|
</div>
|
|||
|
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</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0">
|
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注意事项
|
|||
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</td><td class="- topic/entry entry colsep-0 rowsep-0">offset 与 page 对齐</td></tr></tbody></table></div></section><section class="- topic/section section" id="id__rtos" data-ofbid="id__rtos"><h2 class="- topic/title title sectiontitle">RTOS 源码说明</h2>
|
|||
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|
|||
|
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<div class="table-container"><table class="- topic/table table frame-all" id="id__table_wk2_dcm_f1c" data-ofbid="id__table_wk2_dcm_f1c" 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"> 10</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">源码说明</span></caption><colgroup><col style="width:32.6797385620915%"/><col style="width:67.3202614379085%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_wk2_dcm_f1c__entry__1">相关模块</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_wk2_dcm_f1c__entry__2">源码路径</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_wk2_dcm_f1c__entry__1">mtd</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_wk2_dcm_f1c__entry__2"><span class="+ topic/ph sw-d/filepath ph filepath">kernel/rt-thread/components/drivers/mtd/mtd_nor.c</span></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_wk2_dcm_f1c__entry__1">spinand</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_wk2_dcm_f1c__entry__2"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/peripheral/spinor_sfud</span><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/drv/spinor/spinor_sfud.c</span></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_wk2_dcm_f1c__entry__1">qspi</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_wk2_dcm_f1c__entry__2"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/drv/qspi/drv_qspi.c</span></td></tr></tbody></table></div></section><section class="- topic/section section" id="id__id6" data-ofbid="id__id6"><h2 class="- topic/title title sectiontitle">RTOS 层次关系</h2>
|
|||
|
|
|
|||
|
|
<figure class="- topic/fig fig fignone" id="id__id9" data-ofbid="id__id9"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="id__image_otj_f53_ddc" src="../../../images/memory/rtt_spinor.png" alt="rtt_spinor"/></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">SPI NOR 驱动框架</span></figcaption></figure>
|
|||
|
|
<div class="- topic/note note note note_note" id="id__note_flr_qn3_ddc" data-ofbid="id__note_flr_qn3_ddc"><span class="note__title">注：</span>
|
|||
|
|
<p class="- topic/p p" data-ofbid="d187135e631__20250121171628">mtd 设备用来挂载 Littlefs 文件系统，blk 设备用来挂载 FatFS 文件系统。</p>
|
|||
|
|
</div>
|
|||
|
|
</section><section class="- topic/section section" id="id__section_e31_1v3_ddc" data-ofbid="id__section_e31_1v3_ddc"><h2 class="- topic/title title sectiontitle">RTOS 关键流程</h2>
|
|||
|
|
|
|||
|
|
<div class="- topic/div div section" id="id__id8">
|
|||
|
|
<strong class="+ topic/ph hi-d/b ph b">SPI NOR
|
|||
|
|
初始化流程</strong><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_zx2_1v3_ddc" data-ofbid="id__codeblock_zx2_1v3_ddc">rt_hw_spi_flash_with_sfud_init <em class="hl-comment">//bsp/artinchip/drv/spinor/spinor_sfud.c</em>
|
|||
|
|
|-> aic_qspi_bus_attach_device(<span class="hl-string">"qspi0"</span>, SPI_FLASH_DEVICE_NAME, <span class="hl-number">0</span>, <span class="hl-number">4</span>, RT_NULL, RT_NULL);<em class="hl-comment">//创建 qspi 总线</em>
|
|||
|
|
|-> rt_sfud_flash_probe(USING_NOR_FLASH_DEV_NAME,SPI_FLASH_DEVICE_NAME) <em class="hl-comment">//kernel/rt-thread/components/drivers/spi/spi_flash_sfud.c</em>
|
|||
|
|
|-> rt_sfud_flash_probe_ex(spi_flash_dev_name, spi_dev_name, &cfg, RT_NULL);
|
|||
|
|
|-> rt_qspi_configure(qspi_dev, qspi_cfg);
|
|||
|
|
|-> sfud_device_init(sfud_dev)
|
|||
|
|
|-> hardware_init(flash);
|
|||
|
|
|-> sfud_spi_port_init(flash); <em class="hl-comment">////kernel/rt-thread/components/drivers/spi/spi_flash_sfud.c</em>
|
|||
|
|
|-> flash->spi.wr = spi_write_read; <em class="hl-comment">//提供读写接口</em>
|
|||
|
|
|-> flash->spi.qspi_read = (<strong class="hl-keyword">void</strong> *)qspi_read; <em class="hl-comment">//提供快速读取接口</em>
|
|||
|
|
|-> read_jedec_id(flash); <em class="hl-comment">//读取设备 id</em>
|
|||
|
|
|-> sfud_read_sfdp(flash); <em class="hl-comment">//自动识别 SPI NOR</em>
|
|||
|
|
|-> sfud_qspi_fast_read_enable(sfud_dev, qspi_dev->config.qspi_dl_width);
|
|||
|
|
|-> rt_device_register(&(rtt_dev->flash_device), spi_flash_dev_name, RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_STANDALONE);</pre>
|
|||
|
|
</div>
|
|||
|
|
</section></div></article></main></div>
|
|||
|
|
|
|||
|
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|
|||
|
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|
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|
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|
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|
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</div>
|
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<nav role="navigation" id="wh_topic_toc" aria-label="On this page" class="col-lg-2 d-none d-lg-block navbar d-print-none">
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<div id="wh_topic_toc_content">
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|
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<div class=" wh_topic_toc "><div class="wh_topic_label">在本页上</div><ul><li class="section-item"><div class="section-title"><a href="#id__section_avt_g53_ddc" data-tocid="id__section_avt_g53_ddc">Baremetal 源码说明</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_bvt_g53_ddc" data-tocid="id__section_bvt_g53_ddc">Baremetal 层次关系</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_w4m_h53_ddc" data-tocid="id__section_w4m_h53_ddc">Baremetal 关键流程</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_lbw_353_ddc" data-tocid="id__section_lbw_353_ddc">Baremetal 应用接口设计</a></div></li><li class="section-item"><div class="section-title"><a href="#id__rtos" data-tocid="id__rtos">RTOS 源码说明</a></div></li><li class="section-item"><div class="section-title"><a href="#id__id6" data-tocid="id__id6">RTOS 层次关系</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_e31_1v3_ddc" data-tocid="id__section_e31_1v3_ddc">RTOS 关键流程</a></div></li></ul></div>
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Update Time: 2025-01-21
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