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data-id="concept_mcc_32s_nbc" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_mcc_32s_nbc-d5856e3639-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-multi-media-sdk.html" id="concept_mcc_32s_nbc-d5856e3639-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-d5856e4868" 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-d5856e4868-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-interface-sdk.html" id="concept_nww_hzh_pzb-d5856e4868-link">接口</a><div class="wh-tooltip"><p class="shortdesc">CAN<span class="ph">、CAP</span>、CIR、GPAI、GPIO、I2C、PSADC、PWM 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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/spinand/spi-nand_baremetal_design_guide-lite.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">Baremetal 设计说明</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;">
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</div><div class="- topic/body concept/conbody body conbody"><section class="- topic/section section" id="spi_nand_baremetal_design_intro_luban_lite__baremetal" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__baremetal"><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="spi_nand_baremetal_design_intro_luban_lite__table_u3w_dzh_bdc" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__table_u3w_dzh_bdc" 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"></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="spi_nand_baremetal_design_intro_luban_lite__table_u3w_dzh_bdc__entry__1">相关模块</th><th class="- topic/entry entry colsep-0 rowsep-1" id="spi_nand_baremetal_design_intro_luban_lite__table_u3w_dzh_bdc__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="spi_nand_baremetal_design_intro_luban_lite__table_u3w_dzh_bdc__entry__1">Application</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="spi_nand_baremetal_design_intro_luban_lite__table_u3w_dzh_bdc__entry__2"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/examples_bare/mtd.c</span><p class="- topic/p p" data-ofbid="d210186e47__20250121171639">用户可以参考此文件进行测试开发。</p></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="spi_nand_baremetal_design_intro_luban_lite__table_u3w_dzh_bdc__entry__1">mtd</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="spi_nand_baremetal_design_intro_luban_lite__table_u3w_dzh_bdc__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="spi_nand_baremetal_design_intro_luban_lite__table_u3w_dzh_bdc__entry__1">spinand</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="spi_nand_baremetal_design_intro_luban_lite__table_u3w_dzh_bdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/peripheral/spinand</span></div>
|
||
<div class="- topic/div div"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/drv_bare/spinand/spinand_port.c</span></div>
|
||
<div class="- topic/div div"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/drv_bare/spinand/spinand_mtd.c</span></div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="spi_nand_baremetal_design_intro_luban_lite__table_u3w_dzh_bdc__entry__1">qspi</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="spi_nand_baremetal_design_intro_luban_lite__table_u3w_dzh_bdc__entry__2"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/hal/qspi/hal_qspi.c</span></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="spi_nand_baremetal_design_intro_luban_lite__table_u3w_dzh_bdc__entry__1">其它重要文件 </td><td class="- topic/entry entry colsep-0 rowsep-0" headers="spi_nand_baremetal_design_intro_luban_lite__table_u3w_dzh_bdc__entry__2"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/examples_bare/test-spinand/spinand.c</span></td></tr></tbody></table></div>
|
||
</section><section class="- topic/section section" id="spi_nand_baremetal_design_intro_luban_lite__section_gg4_tdh_f1c" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__section_gg4_tdh_f1c"><h2 class="- topic/title title sectiontitle">Baremetal 层次关系</h2>
|
||
|
||
<div class="- topic/p p" data-ofbid="d210186e93__20250121171639"><a class="- topic/xref xref" href="#spi_nand_baremetal_design_intro_luban_lite__fig_mvp_1dh_f1c">Baremetal 层次关系</a>如下所示：<figure class="- topic/fig fig fignone" id="spi_nand_baremetal_design_intro_luban_lite__fig_mvp_1dh_f1c" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__fig_mvp_1dh_f1c"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="spi_nand_baremetal_design_intro_luban_lite__image_xzk_vch_f1c" src="../../../images/spinand/bar_spinand.png" alt="bar_spinand"/></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">Baremetal 层次关系</span></figcaption></figure></div>
|
||
<p class="- topic/p p" data-ofbid="d210186e105__20250121171639">用户开发项目，在 MTD 层上开发, SPINAND 层上开发可能会破坏 spl、os 分区的数据。</p>
|
||
</section><section class="- topic/section section" id="spi_nand_baremetal_design_intro_luban_lite__section_u3n_5dh_f1c" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__section_u3n_5dh_f1c"><h2 class="- topic/title title sectiontitle">Baremetal 关键流程</h2>
|
||
|
||
<ul class="- topic/ul ul" id="spi_nand_baremetal_design_intro_luban_lite__ul_z5m_3dh_f1c" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__ul_z5m_3dh_f1c"><li class="- topic/li li" data-ofbid="d210186e114__20250121171639">SPI NAND
|
||
初始化流程<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="spi_nand_baremetal_design_intro_luban_lite__codeblock_flm_kdh_f1c" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__codeblock_flm_kdh_f1c">mtd_probe <em class="hl-comment">//bsp/artinchip/drv_bare/mtd/mtd_probe.c</em>
|
||
|-> spinand_probe(AIC_BOOTLOADER_SPINAND_QSPI_ID); <em class="hl-comment">//bsp/artinchip/drv_bare/spinand/spinand_mtd.c</em>
|
||
|-> get_qspi_by_index(spi_bus); <em class="hl-comment">// 获取 bus 对象</em>
|
||
|-> qspi_configure(qspi, NULL); <em class="hl-comment">//bsp/artinchip/drv_bare/spinand/spinand_port.c</em>
|
||
|-> hal_qspi_master_init(&qspi->handle, &cfg);
|
||
|-> hal_qspi_master_dma_config(&qspi->handle, &dmacfg);
|
||
|-> hal_qspi_master_set_bus_freq(&qspi->handle, qspi->bus_hz);
|
||
|-> spinand_flash_init(flash); <em class="hl-comment">//bsp/peripheral/spinand/spinand.c</em>
|
||
|-> spinand_info_read(flash);
|
||
|-> nand_bbt_init(flash);
|
||
|-> 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.erase = mtd_spinand_erase;
|
||
|-> mtd->ops.block_isbad = mtd_spinand_block_isbad;
|
||
|-> mtd->ops.block_markbad = mtd_spinand_block_markbad;
|
||
|-> mtd->ops.read = mtd_spinand_read;
|
||
|-> mtd->ops.write = mtd_spinand_write;
|
||
|-> mtd->ops.read_oob = mtd_spinand_read_oob;
|
||
|-> mtd->ops.write_oob = mtd_spinand_write_oob;
|
||
|-> mtd->ops.cont_read = mtd_spinand_continuous_read;
|
||
|-> mtd_add_device(mtd); <em class="hl-comment">//添加 mtd 分区</em></pre></li><li class="- topic/li li" data-ofbid="d210186e118__20250121171639">SPI NAND
|
||
读数据流程<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="spi_nand_baremetal_design_intro_luban_lite__codeblock_nmp_kdh_f1c" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__codeblock_nmp_kdh_f1c">mtd_read <em class="hl-comment">//bsp/artinchip/drv_bare/mtd/mtdcore.c</em>
|
||
|-> mtd_spinand_read(<strong class="hl-keyword">struct</strong> mtd_dev *mtd, u32 offset, u8 *data, u32 len); <em class="hl-comment">//bsp/artinchip/drv_bare/spinand/spinand_mtd.c</em>
|
||
|-> spinand_read(flash, data, start, dolen); <em class="hl-comment">//bsp/peripheral/spinand/spinand.c</em>
|
||
|-> spinand_block_isbad(flash, blk);
|
||
|-> spinand_read_page(flash, page, p, flash->info->page_size, NULL, <span class="hl-number">0</span>);
|
||
|-> spinand_load_page_op(flash, page);
|
||
|-> spinand_read_from_cache_op(flash, column, buf, nbytes);</pre></li></ul>
|
||
</section><section class="- topic/section section" id="spi_nand_baremetal_design_intro_luban_lite__id6" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__id6"><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="spi_nand_baremetal_design_intro_luban_lite__table_njw_dzh_bdc" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__table_njw_dzh_bdc" 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"><strong class="+ topic/ph hi-d/b ph b">mtd_probe</strong></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="spi_nand_baremetal_design_intro_luban_lite__table_ojw_dzh_bdc" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__table_ojw_dzh_bdc" 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"><strong class="+ topic/ph hi-d/b ph b">mtd_add_device</strong></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="spi_nand_baremetal_design_intro_luban_lite__table_pjw_dzh_bdc" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__table_pjw_dzh_bdc" 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"><strong class="+ topic/ph hi-d/b ph b">mtd_get_device_count</strong></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="spi_nand_baremetal_design_intro_luban_lite__table_qjw_dzh_bdc" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__table_qjw_dzh_bdc" 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"><strong class="+ topic/ph hi-d/b ph b">mtd_get_device_by_id</strong></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="spi_nand_baremetal_design_intro_luban_lite__table_rjw_dzh_bdc" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__table_rjw_dzh_bdc" 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"><strong class="+ topic/ph hi-d/b ph b">mtd_get_device</strong></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="spi_nand_baremetal_design_intro_luban_lite__table_sjw_dzh_bdc" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__table_sjw_dzh_bdc" 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"><strong class="+ topic/ph hi-d/b ph b">mtd_read</strong></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，在读取数据的过程中，如果遇到了坏块，会自动寻找下一个好块，继续读取数据</td></tr></tbody></table></div>
|
||
<div class="table-container"><table class="- topic/table table colwidths-given docutils align-default frame-all" id="spi_nand_baremetal_design_intro_luban_lite__table_tjw_dzh_bdc" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__table_tjw_dzh_bdc" 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"><strong class="+ topic/ph hi-d/b ph b">mtd_erase</strong></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="spi_nand_baremetal_design_intro_luban_lite__table_ujw_dzh_bdc" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__table_ujw_dzh_bdc" 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"><strong class="+ topic/ph hi-d/b ph b">mtd_write</strong></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"> 功能说明 </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"> 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"> 发送缓冲区地址</div>
|
||
</div>
|
||
<div class="- topic/div div">u32 len</div>
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> 擦除数据的长度</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，在写入数据的过程中，如果遇到了坏块，会自动寻找下一个好块，继续写入数据</td></tr></tbody></table></div>
|
||
<div class="table-container"><table class="- topic/table table colwidths-given docutils align-default frame-all" id="spi_nand_baremetal_design_intro_luban_lite__table_vjw_dzh_bdc" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__table_vjw_dzh_bdc" 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"><strong class="+ topic/ph hi-d/b ph b">mtd_block_isbad</strong></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_block_isbad(struct mtd_dev *mtd, u32 offset);</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">判断指定的块是否是坏块</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>
|
||
</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">1: 坏块</div>
|
||
<div class="- topic/div div">0: 正常块</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 大小对齐</td></tr></tbody></table></div>
|
||
<div class="table-container"><table class="- topic/table table colwidths-given docutils align-default frame-all" id="spi_nand_baremetal_design_intro_luban_lite__table_wjw_dzh_bdc" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__table_wjw_dzh_bdc" 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"> 11</span><span class="table--title-label-punctuation">. </span></span><span class="table--title"><strong class="+ topic/ph hi-d/b ph b">mtd_block_markbad</strong></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_block_markbad(struct mtd_dev *mtd, u32 offset);</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">标记指定的块为坏块</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>
|
||
</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 大小对齐</td></tr></tbody></table></div>
|
||
<div class="table-container"><table class="- topic/table table colwidths-given docutils align-default frame-all" id="spi_nand_baremetal_design_intro_luban_lite__table_xjw_dzh_bdc" data-ofbid="spi_nand_baremetal_design_intro_luban_lite__table_xjw_dzh_bdc" 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"> 12</span><span class="table--title-label-punctuation">. </span></span><span class="table--title"><strong class="+ topic/ph hi-d/b ph b">mtd_contread</strong></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_contread(struct mtd_dev *mtd, u32 offset, uint8_t *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">使用连续读取模式读取 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">芯片必须支持连续读取模式, offset 大小与 page 对齐</td></tr></tbody></table></div>
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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="#spi_nand_baremetal_design_intro_luban_lite__baremetal" data-tocid="spi_nand_baremetal_design_intro_luban_lite__baremetal">Baremetal 源码说明</a></div></li><li class="section-item"><div class="section-title"><a href="#spi_nand_baremetal_design_intro_luban_lite__section_gg4_tdh_f1c" data-tocid="spi_nand_baremetal_design_intro_luban_lite__section_gg4_tdh_f1c">Baremetal 层次关系</a></div></li><li class="section-item"><div class="section-title"><a href="#spi_nand_baremetal_design_intro_luban_lite__section_u3n_5dh_f1c" data-tocid="spi_nand_baremetal_design_intro_luban_lite__section_u3n_5dh_f1c">Baremetal 关键流程</a></div></li><li class="section-item"><div class="section-title"><a href="#spi_nand_baremetal_design_intro_luban_lite__id6" data-tocid="spi_nand_baremetal_design_intro_luban_lite__id6">Baremetal 应用接口设计</a></div></li></ul></div>
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