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< div class = "date inPage" > 16 May 2025< / div > < div style = "color: gray;" >
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Read time: 4 minute(s)
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< 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" >
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< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_ctj_f53_ddc__entry__1" > < p class = "- topic/p p" data-ofbid = "d211139e49__20250519091529" > 相关模块< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_ctj_f53_ddc__entry__2" > < p class = "- topic/p p" data-ofbid = "d211139e53__20250519091529" > 源码路径< / p > < / th >
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< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_ctj_f53_ddc__entry__1" > < p class = "- topic/p p" data-ofbid = "d211139e63__20250519091529" > Application< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_ctj_f53_ddc__entry__2" > < p class = "- topic/p p" data-ofbid = "d211139e67__20250519091529" > < span class = "+ topic/ph sw-d/filepath ph filepath" > bsp/examples_bare/mtd.c< / span > < / p > < / td >
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< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_ctj_f53_ddc__entry__1" > < p class = "- topic/p p" data-ofbid = "d211139e75__20250519091529" > mtd< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_ctj_f53_ddc__entry__2" > < p class = "- topic/p p" data-ofbid = "d211139e79__20250519091529" > < span class = "+ topic/ph sw-d/filepath ph filepath" > bsp/artinchip/drv_bare/mtd/< / span > < / p > < / td >
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< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_ctj_f53_ddc__entry__1" > < p class = "- topic/p p" data-ofbid = "d211139e87__20250519091529" > SFUD< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_ctj_f53_ddc__entry__2" > < p class = "- topic/p p" data-ofbid = "d211139e91__20250519091529" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > < span class = "+ topic/ph sw-d/filepath ph filepath" > bsp/peripheral/spinor_sfud< / span > < / div >
< div class = "- topic/div div" > < span class = "+ topic/ph sw-d/filepath ph filepath" > bsp/artinchip/drv_bare/spinor/sfud_port.c< / span > < / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_ctj_f53_ddc__entry__1" > < p class = "- topic/p p" data-ofbid = "d211139e109__20250519091529" > qspi< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_ctj_f53_ddc__entry__2" > < p class = "- topic/p p" data-ofbid = "d211139e113__20250519091529" > < span class = "+ topic/ph sw-d/filepath ph filepath" > bsp/artinchip/hal/qspi/hal_qspi.c< / span > < / p > < / td >
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< / tr >
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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 = "d211139e123__20250519091529" > 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 >
< / 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 = "d211139e150__20250519091529" > 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" >
< 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_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 >
|-> sfud_probe(AIC_BOOTLOADER_SPINOR_QSPI_ID); < em class = "hl-comment" > //bsp/artinchip/drv_bare/spinor/sfud_port.c< / em >
|-> get_qspi_by_index(spi_bus); < em class = "hl-comment" > //获取 aic_qspi_bus 对象< / em >
|-> 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 >
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< / 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 >
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< 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" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e198__20250519091529" >
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函数原型
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e202__20250519091529" > int mtd_probe(void);< / p > < / td >
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< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e209__20250519091529" >
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功能说明
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e213__20250519091529" > 初始化所有 mtd 设备< / p > < / td >
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< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e220__20250519091529" >
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返回值
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e224__20250519091529" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > 0: 成功< / div >
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< div class = "- topic/div div" > 其它: 失败< / div >
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< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-0" > < p class = "- topic/p p" data-ofbid = "d211139e240__20250519091529" >
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注意事项
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-0" > < p class = "- topic/p p" data-ofbid = "d211139e244__20250519091529" > 只有初始化 mtd 设备之后, 才能正常使用其它函数< / p > < / td >
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< / 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" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e267__20250519091529" >
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函数原型
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e271__20250519091529" > int mtd_add_device(struct mtd_dev *mtd);< / p > < / td >
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< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e278__20250519091529" >
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功能说明
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e282__20250519091529" > 增加 mtd 设备< / p > < / td >
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< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e289__20250519091529" >
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参数定义
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e293__20250519091529" >
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< 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 >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e312__20250519091529" >
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返回值
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e316__20250519091529" >
2025-01-23 16:37:00 +08:00
< div class = "- topic/div div" >
< div class = "- topic/div div" > 0: 成功< / div >
2025-04-23 17:54:31 +08:00
< div class = "- topic/div div" > 其它: 失败< / div >
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< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-0" > < p class = "- topic/p p" data-ofbid = "d211139e332__20250519091529" >
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注意事项
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-0" > < p class = "- topic/p p" data-ofbid = "d211139e336__20250519091529" > -< / p > < / td >
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< / 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" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e359__20250519091529" >
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函数原型
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e363__20250519091529" > u32 mtd_get_device_count(void);< / p > < / td >
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< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e370__20250519091529" >
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功能说明
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e374__20250519091529" > 获取注册的 mtd 设备个数< / p > < / td >
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< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e381__20250519091529" >
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返回值
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e385__20250519091529" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > 注册的 mtd 设备个数< / div >
< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-0" > < p class = "- topic/p p" data-ofbid = "d211139e398__20250519091529" >
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注意事项
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-0" > < p class = "- topic/p p" data-ofbid = "d211139e402__20250519091529" > -< / p > < / td >
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< / 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" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e425__20250519091529" >
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函数原型
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e429__20250519091529" > struct mtd_dev *mtd_get_device_by_id(u32 id);< / p > < / td >
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< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e436__20250519091529" >
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功能说明
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e440__20250519091529" > 通过索引号获取 mtd 设备句柄< / p > < / td >
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< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e447__20250519091529" >
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返回值
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e451__20250519091529" >
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< 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 >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-0" > < p class = "- topic/p p" data-ofbid = "d211139e467__20250519091529" >
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注意事项
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-0" > < p class = "- topic/p p" data-ofbid = "d211139e471__20250519091529" > -< / p > < / td >
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< / 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" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e495__20250519091529" >
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函数原型
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e499__20250519091529" > struct mtd_dev *mtd_get_device(const char *name);< / p > < / td >
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< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e506__20250519091529" >
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功能说明
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e510__20250519091529" > 通过分区名获取 mtd 设备句柄< / p > < / td >
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< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e517__20250519091529" >
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参数定义
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e521__20250519091529" >
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< 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 >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e540__20250519091529" >
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返回值
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e544__20250519091529" >
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< 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 >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-0" > < p class = "- topic/p p" data-ofbid = "d211139e560__20250519091529" >
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注意事项
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-0" > < p class = "- topic/p p" data-ofbid = "d211139e564__20250519091529" > -< / p > < / td >
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< / 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" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e587__20250519091529" >
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函数原型
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e591__20250519091529" > int mtd_read(struct mtd_dev *mtd, u32 offset, u8 *data, u32
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len);< / p > < / td >
< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e598__20250519091529" >
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功能说明
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e602__20250519091529" > 读取 mtd 分区数据到缓冲区上< / p > < / td >
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< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e609__20250519091529" >
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参数定义
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e613__20250519091529" >
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< 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 >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e660__20250519091529" >
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返回值
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e664__20250519091529" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > 0: 成功< / div >
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< div class = "- topic/div div" > 其它: 失败< / div >
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< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-0" > < p class = "- topic/p p" data-ofbid = "d211139e680__20250519091529" >
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注意事项
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-0" > < p class = "- topic/p p" data-ofbid = "d211139e684__20250519091529" > offset 与 page 对齐< / p > < / td >
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< / 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" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e707__20250519091529" >
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函数原型
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e711__20250519091529" > int mtd_erase(struct mtd_dev *mtd, u32 offset, u32 len);< / p > < / td >
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< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e718__20250519091529" >
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功能说明
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e722__20250519091529" > 擦除 mtd 分区某块区域的数据< / p > < / td >
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< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e729__20250519091529" >
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参数定义
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e733__20250519091529" >
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< 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 >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e771__20250519091529" >
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返回值
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e775__20250519091529" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > 0: 成功< / div >
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< div class = "- topic/div div" > 其它: 失败< / div >
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< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-0" > < p class = "- topic/p p" data-ofbid = "d211139e791__20250519091529" >
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注意事项
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-0" > < p class = "- topic/p p" data-ofbid = "d211139e795__20250519091529" > offset 必须与 block 对齐< / p > < / td >
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< / 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" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e818__20250519091529" >
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函数原型
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e822__20250519091529" > int mtd_write(struct mtd_dev *mtd, u32 offset, u8 *data, u32
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len);< / p > < / td >
< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e829__20250519091529" >
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功能说明
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e833__20250519091529" > 写入缓冲区上的数据到 mtd 分区上< / p > < / td >
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< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e840__20250519091529" >
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参数定义
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e844__20250519091529" >
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< 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 >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e891__20250519091529" >
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返回值
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-1" > < p class = "- topic/p p" data-ofbid = "d211139e895__20250519091529" >
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< div class = "- topic/div div" >
< div class = "- topic/div div" > 0: 成功< / div >
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< div class = "- topic/div div" > 其它: 失败< / div >
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< / div >
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< / p > < / td >
< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-0" > < p class = "- topic/p p" data-ofbid = "d211139e911__20250519091529" >
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注意事项
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< / p > < / td >
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< td class = "- topic/entry entry colsep-0 rowsep-0" > < p class = "- topic/p p" data-ofbid = "d211139e915__20250519091529" > offset 与 page 对齐< / p > < / td >
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< / 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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< 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" >
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< th class = "- topic/entry entry colsep-1 rowsep-1" id = "id__table_wk2_dcm_f1c__entry__1" > < p class = "- topic/p p" data-ofbid = "d211139e943__20250519091529" > 相关模块< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "id__table_wk2_dcm_f1c__entry__2" > < p class = "- topic/p p" data-ofbid = "d211139e947__20250519091529" > 源码路径< / p > < / th >
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< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_wk2_dcm_f1c__entry__1" > < p class = "- topic/p p" data-ofbid = "d211139e957__20250519091529" > mtd< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_wk2_dcm_f1c__entry__2" > < p class = "- topic/p p" data-ofbid = "d211139e961__20250519091529" > < span class = "+ topic/ph sw-d/filepath ph filepath" > kernel/rt-thread/components/drivers/mtd/mtd_nor.c< / span > < / p > < / td >
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< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "id__table_wk2_dcm_f1c__entry__1" > < p class = "- topic/p p" data-ofbid = "d211139e969__20250519091529" > spinand< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "id__table_wk2_dcm_f1c__entry__2" > < p class = "- topic/p p" data-ofbid = "d211139e973__20250519091529" > < 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 > < / p > < / td >
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< / tr >
< tr class = "- topic/row" >
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< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "id__table_wk2_dcm_f1c__entry__1" > < p class = "- topic/p p" data-ofbid = "d211139e983__20250519091529" > qspi< / p > < / td >
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "id__table_wk2_dcm_f1c__entry__2" > < p class = "- topic/p p" data-ofbid = "d211139e987__20250519091529" > < span class = "+ topic/ph sw-d/filepath ph filepath" > bsp/artinchip/drv/qspi/drv_qspi.c< / span > < / p > < / td >
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< / 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 >
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< 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 >
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< 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 >
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< p class = "- topic/p p" data-ofbid = "d211139e1015__20250519091529" > mtd 设备用来挂载 Littlefs 文件系统， < / p >
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< 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 >
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< 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 >
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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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