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<head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/><meta name="viewport" content="width=device-width, initial-scale=1.0"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><meta name="description" content="修改 DTS 要在实际项目中使用 SPI NOR 设备，还需要修改 DTS 配置，详细流程如下所示： 在 board.dts 中具体的 SPI 控制器下添加 jedec,spi-nor 设备。 &spi0 { pinctrl-names = "default" ; pinctrl- 0 = <&spi0_pins_a>; status = "okay" ; spi-max-frequency = ..."/><meta name="DC.rights.owner" content="(C) 版权 2025"/><meta name="copyright" content="(C) 版权 2025"/><meta name="generator" content="DITA-OT"/><meta name="DC.type" content="concept"/><meta name="DC.creator" content="yan.wang"/><meta name="DC.date.created" content="2024-01-17"/><meta name="DC.date.modified" content="2024-11-27"/><meta name="DC.format" content="HTML5"/><meta name="DC.identifier" content="spi_nor_configuration"/><meta name="DC.language" content="zh-CN"/><title>SPI NOR 配置</title><!-- Build number 2023110923. --><meta name="wh-path2root" content="../../../"/><meta name="wh-toc-id" content=""/><meta name="wh-source-relpath" content="topics/sdk/spinor/spinor_config.dita"/><meta name="wh-out-relpath" content="topics/sdk/spinor/spinor_config.html"/>
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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/spinor/spinor_config.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">SPI NOR 配置</h1><div class="date inPage">27 Nov 2024</div><div style="color: gray;">
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Read time: 1 minute(s)
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</div><div class="- topic/body concept/conbody body conbody"><section class="- topic/section section" id="spi_nor_configuration__section_s5t_g5y_c1c" data-ofbid="spi_nor_configuration__section_s5t_g5y_c1c"><h2 class="- topic/title title sectiontitle">修改 DTS</h2>
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<div class="- topic/p p" data-ofbid="d177583e28__20250121171623">要在实际项目中使用 SPI NOR 设备，还需要修改 DTS 配置，详细流程如下所示：<ol class="- topic/ol ol" id="spi_nor_configuration__ul_vmr_zgc_ndc" data-ofbid="spi_nor_configuration__ul_vmr_zgc_ndc"><li class="- topic/li li" data-ofbid="d177583e31__20250121171623">
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<div class="- topic/p p" data-ofbid="d177583e33__20250121171623">在 <span class="+ topic/ph sw-d/filepath ph filepath">board.dts</span> 中具体的 SPI 控制器下添加
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<code class="+ topic/ph pr-d/codeph ph codeph">jedec,spi-nor</code>
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设备。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="spi_nor_configuration__pre_t5t_g5y_c1c" data-ofbid="spi_nor_configuration__pre_t5t_g5y_c1c">&spi0 {
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pinctrl-names = <span class="hl-string">"default"</span>;
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pinctrl-<span class="hl-number">0</span> = <&spi0_pins_a>;
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status = <span class="hl-string">"okay"</span>;
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spi-max-frequency = <<span class="hl-number">100000000</span>>;
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spi-flash@<span class="hl-number">0</span> {
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#address-cells = <<span class="hl-number">1</span>>;
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#size-cells = <<span class="hl-number">1</span>>;
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compatible = <span class="hl-string">"jedec,spi-nor"</span>; <em class="hl-comment">//固定值，所有基于 dts 的 SPI NOR 均声明此</em>
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spi-max-frequency = <<span class="hl-number">100000000</span>>; <em class="hl-comment">//最大频率，固定值</em>
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spi-tx-bus-width = <<span class="hl-number">4</span>>;
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spi-rx-bus-width = <<span class="hl-number">4</span>>;
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reg = <<span class="hl-number">0</span>>; <em class="hl-comment">//固定值，一般不需修改</em>
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status = <span class="hl-string">"okay"</span>;
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};
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};
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</pre></div>
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</li><li class="- topic/li li" data-ofbid="d177583e44__20250121171623">
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<div class="- topic/p p" data-ofbid="d177583e46__20250121171623">在 <span class="+ topic/ph sw-d/filepath ph filepath">board-u-boot.dtsi</span> 文件中，将
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<code class="+ topic/ph pr-d/codeph ph codeph">jedec,spi-nor</code> 设备标记为
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<code class="+ topic/ph pr-d/codeph ph codeph">u-boot,dm-pre-reloc</code>，确保 SPL
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无法识别和使用。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="spi_nor_configuration__pre_u5t_g5y_c1c" data-ofbid="spi_nor_configuration__pre_u5t_g5y_c1c">&spi0 {
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u-boot,dm-pre-reloc;
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spi-flash@<span class="hl-number">0</span> {
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u-boot,dm-pre-reloc;
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};
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};
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</pre></div>
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</li></ol></div>
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</section><section class="- topic/section section" id="spi_nor_configuration__section_zbw_cqy_c1c" data-ofbid="spi_nor_configuration__section_zbw_cqy_c1c"><h2 class="- topic/title title sectiontitle">配置 Bus Width</h2>
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<div class="- topic/p p" data-ofbid="d177583e66__20250121171623">根据 SPI NOR 芯片的总线宽度，正确设置 <code class="+ topic/ph pr-d/codeph ph codeph">spi-tx-bus-width</code>：<ul class="- topic/ul ul" id="spi_nor_configuration__ul_j44_3hc_ndc" data-ofbid="spi_nor_configuration__ul_j44_3hc_ndc"><li class="- topic/li li" data-ofbid="d177583e72__20250121171623">
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<p class="- topic/p p" data-ofbid="d177583e74__20250121171623">标准 SPI NOR 配置为 1</p>
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</li><li class="- topic/li li" data-ofbid="d177583e77__20250121171623">
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<p class="- topic/p p" data-ofbid="d177583e79__20250121171623">Dual SPI NOR 配置为 2</p>
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</li><li class="- topic/li li" data-ofbid="d177583e82__20250121171623">
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<p class="- topic/p p" data-ofbid="d177583e84__20250121171623">Quad SPI NOR 配置为 4</p>
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</li></ul></div>
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<div class="- topic/note note note note_note" id="spi_nor_configuration__note_xrf_jhb_ndc" data-ofbid="spi_nor_configuration__note_xrf_jhb_ndc"><span class="note__title">注：</span> 窄总线设备无法在宽总线模式下工作。</div>
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</section></div></article></main></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_nor_configuration__section_s5t_g5y_c1c" data-tocid="spi_nor_configuration__section_s5t_g5y_c1c">修改 DTS</a></div></li><li class="section-item"><div class="section-title"><a href="#spi_nor_configuration__section_zbw_cqy_c1c" data-tocid="spi_nor_configuration__section_zbw_cqy_c1c">配置 Bus Width</a></div></li></ul></div>
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310
doc/topics/sdk/spinor/spinor_linux_transplant.html
Normal file
310
doc/topics/sdk/spinor/spinor_linux_transplant.html
Normal file
@@ -0,0 +1,310 @@
|
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<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-cn" lang="zh-cn" data-whc_version="26.0">
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<head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/><meta name="viewport" content="width=device-width, initial-scale=1.0"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><meta name="description" content="SPI NOR 驱动 Linux 和 U-Boot 的驱动不一样，Linux 中驱动更复杂一些，本章阐述如何在 Linux 中进行 SPI NOR 器件的移植工作，以 Gigadevice 的 gd25q128 和 FudanMicro 的 FM25Q128 为例 移植一款 SPI NOR，最重要的是 JEDEC ID，通过在数据手册中查找 0x9F 命令获得 ..."/><meta name="DC.rights.owner" content="(C) 版权 2025"/><meta name="copyright" content="(C) 版权 2025"/><meta name="generator" content="DITA-OT"/><meta name="DC.type" content="concept"/><meta name="DC.creator" content="yan.wang"/><meta name="DC.date.created" content="2024-01-17"/><meta name="DC.date.modified" content="2024-07-15"/><meta name="DC.format" content="HTML5"/><meta name="DC.identifier" content="spi_nor_linux_transplant"/><meta name="DC.language" content="zh-CN"/><title>Linux 移植</title><!-- Build number 2023110923. --><meta name="wh-path2root" content="../../../"/><meta name="wh-toc-id" content=""/><meta name="wh-source-relpath" content="topics/sdk/spinor/spinor_linux_transplant.dita"/><meta name="wh-out-relpath" content="topics/sdk/spinor/spinor_linux_transplant.html"/>
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|
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|
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|
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|
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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/spinor/spinor_linux_transplant.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">Linux 移植</h1><div class="date inPage">15 Jul 2024</div><div style="color: gray;">
|
||||
Read time: 5 minute(s)
|
||||
</div><div class="- topic/body concept/conbody body conbody"><p class="- topic/p p" data-ofbid="d284838e23__20250121171754">SPI NOR 驱动 Linux 和 U-Boot 的驱动不一样，Linux 中驱动更复杂一些，本章阐述如何在 Linux 中进行 SPI NOR 器件的移植工作，以
|
||||
<code class="+ topic/ph pr-d/codeph ph codeph">Gigadevice</code> 的 <code class="+ topic/ph pr-d/codeph ph codeph">gd25q128</code> 和
|
||||
<code class="+ topic/ph pr-d/codeph ph codeph">FudanMicro</code> 的 <code class="+ topic/ph pr-d/codeph ph codeph">FM25Q128</code> 为例</p><div class="- topic/p p" data-ofbid="d284838e37__20250121171754">
|
||||
<ul class="- topic/ul ul" id="spi_nor_linux_transplant__ul_es5_xvy_c1c" data-ofbid="spi_nor_linux_transplant__ul_es5_xvy_c1c"><li class="- topic/li li" data-ofbid="d284838e40__20250121171754">
|
||||
<p class="- topic/p p" data-ofbid="d284838e42__20250121171754">移植一款 SPI NOR，最重要的是 JEDEC ID，通过在数据手册中查找 0x9F 命令获得</p>
|
||||
</li><li class="- topic/li li" data-ofbid="d284838e45__20250121171754">
|
||||
<p class="- topic/p p" data-ofbid="d284838e47__20250121171754">其他的参数都可以默认设置，INFO(0xa14017, 0, 64 * 1024, n_sectors, SECT_4K |
|
||||
SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)</p>
|
||||
</li><li class="- topic/li li" data-ofbid="d284838e50__20250121171754">
|
||||
<p class="- topic/p p" data-ofbid="d284838e52__20250121171754">推荐使用标准 dts 进行 SPI NOR 的兼容</p>
|
||||
</li></ul>
|
||||
</div><section class="- topic/section section" id="spi_nor_linux_transplant__section_myj_zvy_c1c" data-ofbid="spi_nor_linux_transplant__section_myj_zvy_c1c"><h2 class="- topic/title title sectiontitle">文件准备</h2>
|
||||
|
||||
<p class="- topic/p p" data-ofbid="d284838e61__20250121171754">相较于 SPI NAND 器件， SPI NOR
|
||||
的接口更加标准，但为了统一管理的方便，还是会为某一个公司创建一个文件进行管理，如果该公司的文件已经存在，则直接添加新器件支持即可</p>
|
||||
<ul class="- topic/ul ul" id="spi_nor_linux_transplant__ul_nyj_zvy_c1c" data-ofbid="spi_nor_linux_transplant__ul_nyj_zvy_c1c"><li class="- topic/li li" data-ofbid="d284838e65__20250121171754">在 <span class="+ topic/ph sw-d/filepath ph filepath">source/linux-5.10/drivers/mtd/spi-nor/</span> 下建相应公司的标识的文件，如
|
||||
<span class="+ topic/ph sw-d/filepath ph filepath">fmsh.c cfx.c</span></li><li class="- topic/li li" data-ofbid="d284838e72__20250121171754">在 Makefile 中添加该文件的编译： spi-nor-objs += fmsh.o</li><li class="- topic/li li" data-ofbid="d284838e74__20250121171754">在 <span class="+ topic/ph sw-d/filepath ph filepath">source/linux-5.10/drivers/mtd/spi-nor/core.h</span> 中声明 extern
|
||||
const struct spi_nor_manufacturer spi_nor_fmsh;</li></ul>
|
||||
</section><section class="- topic/section section" id="spi_nor_linux_transplant__section_oyj_zvy_c1c" data-ofbid="spi_nor_linux_transplant__section_oyj_zvy_c1c"><h2 class="- topic/title title sectiontitle">驱动索引</h2>
|
||||
|
||||
<p class="- topic/p p" data-ofbid="d284838e85__20250121171754">内核中所支持的 SPI NOR 设备通过两级列表进行设置。</p>
|
||||
<div class="- topic/p p" data-ofbid="d284838e88__20250121171754">首先检查 <span class="+ topic/ph sw-d/filepath ph filepath">source/linux-5.10/drivers/mtd/spi-nor/core.c</span> 中的
|
||||
<span class="+ topic/keyword pr-d/parmname keyword parmname">manufacturers</span>,
|
||||
查看新设备的厂商是否在列表之中：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="spi_nor_linux_transplant__codeblock_c1q_1wy_c1c" data-ofbid="spi_nor_linux_transplant__codeblock_c1q_1wy_c1c"><strong class="hl-keyword">static</strong> <strong class="hl-keyword">const</strong> <strong class="hl-keyword">struct</strong> spi_nor_manufacturer *manufacturers[] = {
|
||||
&spi_nor_atmel,
|
||||
&spi_nor_catalyst,
|
||||
&spi_nor_eon,
|
||||
&spi_nor_esmt,
|
||||
&spi_nor_everspin,
|
||||
&spi_nor_fujitsu,
|
||||
&spi_nor_gigadevice,
|
||||
&spi_nor_intel,
|
||||
&spi_nor_issi,
|
||||
&spi_nor_macronix,
|
||||
&spi_nor_micron,
|
||||
&spi_nor_st,
|
||||
&spi_nor_spansion,
|
||||
&spi_nor_sst,
|
||||
&spi_nor_winbond,
|
||||
&spi_nor_xilinx,
|
||||
&spi_nor_xmc,
|
||||
&spi_nor_boya,
|
||||
};</pre></div>
|
||||
<p class="- topic/p p" data-ofbid="d284838e99__20250121171754">再检查具体的设备厂商文件，具体的型号是否在列表之中（ 以 gigadevice 为例）:</p>
|
||||
<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="spi_nor_linux_transplant__codeblock_ypw_1wy_c1c" data-ofbid="spi_nor_linux_transplant__codeblock_ypw_1wy_c1c"><strong class="hl-keyword">static</strong> <strong class="hl-keyword">const</strong> <strong class="hl-keyword">struct</strong> flash_info gigadevice_parts[] = {
|
||||
......
|
||||
{ <span class="hl-string">"gd25q128"</span>, INFO(<span class="hl-number">0xc84018</span>, <span class="hl-number">0</span>, <span class="hl-number">64</span> * <span class="hl-number">1024</span>, <span class="hl-number">256</span>,
|
||||
SECT_<span class="hl-number">4</span>K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
|
||||
SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) },
|
||||
......
|
||||
};</pre>
|
||||
<p class="- topic/p p" data-ofbid="d284838e106__20250121171754">此处检查，需要查找新设备的 Datasheet，找到该设备的 Manufacture 和 Device ID，并查看该 ID 是否出现在列表中。 例如此处为
|
||||
<code class="+ topic/ph pr-d/codeph ph codeph">0xc84018</code> ，其中 Manufacture ID = <code class="+ topic/ph pr-d/codeph ph codeph">0xc8</code>, Device ID
|
||||
ID[15~8] = <code class="+ topic/ph pr-d/codeph ph codeph">0x40</code>, Device ID[7~0] = <code class="+ topic/ph pr-d/codeph ph codeph">0x18</code> 。</p>
|
||||
</section><section class="- topic/section section" id="spi_nor_linux_transplant__section_ol3_xwy_c1c" data-ofbid="spi_nor_linux_transplant__section_ol3_xwy_c1c"><h2 class="- topic/title title sectiontitle">spi_nor_manufacturer</h2>
|
||||
|
||||
<p class="- topic/p p" data-ofbid="d284838e126__20250121171754">该结构为第一级索引，用来描述器件厂家的信息</p>
|
||||
<div class="- topic/p p" data-ofbid="d284838e129__20250121171754">SPI NOR
|
||||
的接口和操作命令很统一，基本没有需要特殊处理的命令<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="spi_nor_linux_transplant__codeblock_ezk_fwy_c1c" data-ofbid="spi_nor_linux_transplant__codeblock_ezk_fwy_c1c"><strong class="hl-keyword">const</strong> <strong class="hl-keyword">struct</strong> spi_nor_manufacturer spi_nor_fmsh = {
|
||||
.name = <span class="hl-string">"FudanMicro"</span>, <em class="hl-comment">//厂家名字标识</em>
|
||||
.parts = fmsh_parts, <em class="hl-comment">//本驱动支持的器件</em>
|
||||
.nparts = ARRAY_SIZE(fmsh_parts), <em class="hl-comment">//支持的器件的个数</em>
|
||||
};</pre></div>
|
||||
</section><section class="- topic/section section" id="spi_nor_linux_transplant__section_r2d_zwy_c1c" data-ofbid="spi_nor_linux_transplant__section_r2d_zwy_c1c"><h2 class="- topic/title title sectiontitle">flash_info</h2>
|
||||
|
||||
<div class="- topic/div div">
|
||||
<div class="- topic/p p" data-ofbid="d284838e141__20250121171754">flash_info 数据结构主要用来描述某一颗 SPI NOR 的参数，通过 INFO
|
||||
宏来设置，其详细结构为：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="spi_nor_linux_transplant__codeblock_y1s_45y_c1c" data-ofbid="spi_nor_linux_transplant__codeblock_y1s_45y_c1c"><strong class="hl-keyword">struct</strong> flash_info {
|
||||
<strong class="hl-keyword">char</strong> *name; <em class="hl-comment">//器件名称，一般用器件编号替代</em>
|
||||
u8 id[SPI_NOR_MAX_ID_LEN]; <em class="hl-comment">//JEDEC 授权的器件 ID</em>
|
||||
u8 id_len; <em class="hl-comment">//ID 长度，填 0，自动计算</em>
|
||||
<strong class="hl-keyword">unsigned</strong> sector_size; <em class="hl-comment">//sector size，现在的意义已经改变</em>
|
||||
u16 n_sectors; <em class="hl-comment">//sector 数目，通过 flash size 和 sector size 计算出来</em>
|
||||
u16 page_size; <em class="hl-comment">//页大小， INFO 宏固定为 256</em>
|
||||
u16 addr_width; <em class="hl-comment">//</em><span class="+ topic/ph sw-d/filepath ph filepath">board.dts</span> 中配置
|
||||
u32 flags; <em class="hl-comment">//功能标识</em></pre></div>
|
||||
<ul class="- topic/ul ul" id="spi_nor_linux_transplant__ul_g2b_t5y_c1c" data-ofbid="spi_nor_linux_transplant__ul_g2b_t5y_c1c"><li class="- topic/li li" data-ofbid="d284838e150__20250121171754"><strong class="+ topic/ph hi-d/b ph b">JEDEC ID</strong>：和 SPI NAND 不同， SPI NOR 的 ID 包含 Manufacture ID 和
|
||||
Device ID 等多项内容，一般为 24 位，描述方式为<div class="table-container"><table class="- topic/table table frame-all" id="spi_nor_linux_transplant__table_l5h_55y_c1c" data-ofbid="spi_nor_linux_transplant__table_l5h_55y_c1c" data-cols="4"><caption></caption><colgroup><col style="width:25%"/><col style="width:25%"/><col style="width:25%"/><col style="width:25%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="spi_nor_linux_transplant__table_l5h_55y_c1c__entry__1">阈值</th><th class="- topic/entry entry colsep-1 rowsep-1" id="spi_nor_linux_transplant__table_l5h_55y_c1c__entry__2">名称</th><th class="- topic/entry entry colsep-1 rowsep-1" id="spi_nor_linux_transplant__table_l5h_55y_c1c__entry__3">示例</th><th class="- topic/entry entry colsep-0 rowsep-1" id="spi_nor_linux_transplant__table_l5h_55y_c1c__entry__4">标记方式</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="spi_nor_linux_transplant__table_l5h_55y_c1c__entry__1">MID7 - IDF0</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="spi_nor_linux_transplant__table_l5h_55y_c1c__entry__2">Maunfacture ID</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="spi_nor_linux_transplant__table_l5h_55y_c1c__entry__3">0xa1</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="spi_nor_linux_transplant__table_l5h_55y_c1c__entry__4">JEDEC 分配</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="spi_nor_linux_transplant__table_l5h_55y_c1c__entry__1">D15 - D8</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="spi_nor_linux_transplant__table_l5h_55y_c1c__entry__2">Memory Type</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="spi_nor_linux_transplant__table_l5h_55y_c1c__entry__3">0x40</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="spi_nor_linux_transplant__table_l5h_55y_c1c__entry__4">0x9F 命令</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="spi_nor_linux_transplant__table_l5h_55y_c1c__entry__1">D7 - D0</td><td class="- topic/entry entry colsep-1 rowsep-0" headers="spi_nor_linux_transplant__table_l5h_55y_c1c__entry__2">Memory Desity</td><td class="- topic/entry entry colsep-1 rowsep-0" headers="spi_nor_linux_transplant__table_l5h_55y_c1c__entry__3">0x17</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="spi_nor_linux_transplant__table_l5h_55y_c1c__entry__4">0x9F 命令</td></tr></tbody></table></div><p class="- topic/p p" data-ofbid="d284838e198__20250121171754">不同厂家在数据手册中描述方法不一样，但现代的 SPI NOR 的 MID 一般通过
|
||||
“Maunfacture/MID” 等字段标注，Device ID 的（D15 - D0） 一般通过 0x9F 命令标注，
|
||||
因此在数据手册中通过搜索 9F 一般能构造出 JEDEC ID， 如下图所示</p><ul class="- topic/ul ul" id="spi_nor_linux_transplant__ul_m5h_55y_c1c" data-ofbid="spi_nor_linux_transplant__ul_m5h_55y_c1c"><li class="- topic/li li" data-ofbid="d284838e201__20250121171754">0xC84018<div class="- topic/p p" data-ofbid="d284838e203__20250121171754">
|
||||
<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="spi_nor_linux_transplant__image_n5h_55y_c1c" src="../../../images/memory/spinor_device_id1.png" width="480" alt="id-1"/></div><br/>
|
||||
</div></li><li class="- topic/li li" data-ofbid="d284838e209__20250121171754">0xC22018<div class="- topic/p p" data-ofbid="d284838e211__20250121171754">
|
||||
<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="spi_nor_linux_transplant__image_p5h_55y_c1c" src="../../../images/memory/spinor_device_id2.png" width="480" alt="id-2"/></div><br/>
|
||||
</div></li><li class="- topic/li li" data-ofbid="d284838e217__20250121171754">0xA14017<div class="- topic/p p" data-ofbid="d284838e219__20250121171754">
|
||||
<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="spi_nor_linux_transplant__image_r5h_55y_c1c" src="../../../images/memory/spinor_device_id3.png" width="480" alt="id-3"/></div><br/>
|
||||
</div></li></ul></li><li class="- topic/li li" data-ofbid="d284838e225__20250121171754"><strong class="+ topic/ph hi-d/b ph b">sector_size</strong>：Sector Size 是个历史产物，不管是文件系统还是厂家的器件规格都开始对外提供基于
|
||||
Block 的接口，但在名称上还保留了 Sector 的名称，而驱动中则已经完全切换到 Block 的逻辑<p class="- topic/p p" data-ofbid="d284838e229__20250121171754">Sector Size
|
||||
主要定义的是擦除参数，一般的器件提供三种擦除操作</p><div class="table-container"><table class="- topic/table table frame-all" id="spi_nor_linux_transplant__table_exs_dvy_c1c" data-ofbid="spi_nor_linux_transplant__table_exs_dvy_c1c" data-cols="4"><caption></caption><colgroup><col style="width:26.814814814814813%"/><col style="width:16.296296296296298%"/><col style="width:14.814814814814813%"/><col style="width:42.07407407407407%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="spi_nor_linux_transplant__table_exs_dvy_c1c__entry__1">操作方式</th><th class="- topic/entry entry colsep-1 rowsep-1" id="spi_nor_linux_transplant__table_exs_dvy_c1c__entry__2">命令</th><th class="- topic/entry entry colsep-1 rowsep-1" id="spi_nor_linux_transplant__table_exs_dvy_c1c__entry__3">擦除大小</th><th class="- topic/entry entry colsep-0 rowsep-1" id="spi_nor_linux_transplant__table_exs_dvy_c1c__entry__4">备注</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="spi_nor_linux_transplant__table_exs_dvy_c1c__entry__1">Sector Erase( SE)</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="spi_nor_linux_transplant__table_exs_dvy_c1c__entry__2">0x20</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="spi_nor_linux_transplant__table_exs_dvy_c1c__entry__3">4K</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="spi_nor_linux_transplant__table_exs_dvy_c1c__entry__4">基础能力，主要做兼容，不做主力</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="spi_nor_linux_transplant__table_exs_dvy_c1c__entry__1">32K Block Erase (BE)</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="spi_nor_linux_transplant__table_exs_dvy_c1c__entry__2">0x52</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="spi_nor_linux_transplant__table_exs_dvy_c1c__entry__3">32K</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="spi_nor_linux_transplant__table_exs_dvy_c1c__entry__4">不再使用，和 BE-64 成对</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="spi_nor_linux_transplant__table_exs_dvy_c1c__entry__1">64K Block Erase (BE)</td><td class="- topic/entry entry colsep-1 rowsep-0" headers="spi_nor_linux_transplant__table_exs_dvy_c1c__entry__2">0xD8</td><td class="- topic/entry entry colsep-1 rowsep-0" headers="spi_nor_linux_transplant__table_exs_dvy_c1c__entry__3">64K</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="spi_nor_linux_transplant__table_exs_dvy_c1c__entry__4">大部分都支持，如果不支持则必须支持 SE</td></tr></tbody></table></div><p class="- topic/p p" data-ofbid="d284838e275__20250121171754">在驱动中，Sector_Size 描述的实际是 BE-64 的参数，而 BE-64 要求的 size 又是固定的
|
||||
64K，因此该参数的设置原则是：</p><ul class="- topic/ul ul" id="spi_nor_linux_transplant__ul_fxs_dvy_c1c" data-ofbid="spi_nor_linux_transplant__ul_fxs_dvy_c1c"><li class="- topic/li li" data-ofbid="d284838e278__20250121171754">在数据手册中，如果支持 64K Block Erase (0xD8）命令，则设置为 ‘64 * 1024’</li><li class="- topic/li li" data-ofbid="d284838e280__20250121171754">在数据手册中, 如果不支持 64K Block Erase (0xD8）命令，则设置为 ‘4 * 1024’</li></ul><div class="- topic/p p" data-ofbid="d284838e282__20250121171754">
|
||||
<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="spi_nor_linux_transplant__image_gxs_dvy_c1c" src="../../../images/memory/spinor_sector_size.png" width="480" alt="se"/></div><br/>
|
||||
</div></li><li class="- topic/li li" data-ofbid="d284838e288__20250121171754"><strong class="+ topic/ph hi-d/b ph b">n_sectors</strong>：Sector (Block) 数目通过计算得到， 计算公式为 (（flash size）/
|
||||
sector size)，需要注意不同参数使用 Byte（B） 还是 bit（b） 描述<ul class="- topic/ul ul" id="spi_nor_linux_transplant__ul_gzk_3vy_c1c" data-ofbid="spi_nor_linux_transplant__ul_gzk_3vy_c1c"><li class="- topic/li li" data-ofbid="d284838e293__20250121171754">
|
||||
<p class="- topic/p p" data-ofbid="d284838e295__20250121171754">gd25q128： 128Mb / 64KB = 256</p>
|
||||
</li><li class="- topic/li li" data-ofbid="d284838e298__20250121171754">
|
||||
<p class="- topic/p p" data-ofbid="d284838e300__20250121171754">FM25Q128: 128Mb / 64KB = 256</p>
|
||||
</li><li class="- topic/li li" data-ofbid="d284838e303__20250121171754">
|
||||
<p class="- topic/p p" data-ofbid="d284838e305__20250121171754">FM25Q64: 64Mb / 64KB = 128</p>
|
||||
</li></ul></li><li class="- topic/li li" data-ofbid="d284838e308__20250121171754"><strong class="+ topic/ph hi-d/b ph b">flags</strong>：设置额外的功能标志。<ul class="- topic/ul ul" id="spi_nor_linux_transplant__ul_sxx_jvy_c1c" data-ofbid="spi_nor_linux_transplant__ul_sxx_jvy_c1c"><li class="- topic/li li" data-ofbid="d284838e313__20250121171754">SECT_4K 建议均设置，此功能用来兼容 Sector Erase( SE)
|
||||
的支持，在一些特殊情况下可以继续工作</li><li class="- topic/li li" data-ofbid="d284838e315__20250121171754">如果支持 0xBB 命令，则打开 SPI_NOR_DUAL_READ</li><li class="- topic/li li" data-ofbid="d284838e317__20250121171754">如果支持 0xEB 命令，则打开 SPI_NOR_QUAD_READ<div class="- topic/p p" data-ofbid="d284838e319__20250121171754">
|
||||
<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="spi_nor_linux_transplant__image_gds_5jv_mbc" src="../../../images/memory/spinor_qspi_read.png" width="480" alt="qspi"/></div><br/>
|
||||
</div></li><li class="- topic/li li" data-ofbid="d284838e325__20250121171754">如果有 Status Register，则打开 USE_FSR，是一种状态呈现，非必须 <div class="- topic/p p" data-ofbid="d284838e327__20250121171754">
|
||||
<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="spi_nor_linux_transplant__image_vxx_jvy_c1c" src="../../../images/memory/spinor_user_fsr.png" width="480" alt="fsr"/></div><br/>
|
||||
</div></li></ul></li></ul>
|
||||
</div>
|
||||
</section><section class="- topic/section section" id="spi_nor_linux_transplant__section_rhj_fxy_c1c" data-ofbid="spi_nor_linux_transplant__section_rhj_fxy_c1c"><h2 class="- topic/title title sectiontitle">id_table</h2>
|
||||
|
||||
<div class="- topic/p p" data-ofbid="d284838e340__20250121171754">除了使用 dts 的 .compatible = “jedec,spi-nor” 统一匹配所有的 SPI NOR 外，驱动还兼容使用非标准 dts 的使用方式， 即直接在
|
||||
dts 文件中描述要使用的 SPI NOR 的型号，
|
||||
但这会造成固件和器件的紧耦合，不推荐使用<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="spi_nor_linux_transplant__codeblock_u4c_gxy_c1c" data-ofbid="spi_nor_linux_transplant__codeblock_u4c_gxy_c1c"><strong class="hl-keyword">static</strong> <strong class="hl-keyword">struct</strong> spi_mem_driver spi_nor_driver = {
|
||||
.spidrv = {
|
||||
.driver = {
|
||||
.name = <span class="hl-string">"spi-nor"</span>,
|
||||
.of_match_table = spi_nor_of_table,
|
||||
},
|
||||
.id_table = spi_nor_dev_ids,
|
||||
},
|
||||
|
||||
<strong class="hl-keyword">static</strong> <strong class="hl-keyword">const</strong> <strong class="hl-keyword">struct</strong> spi_device_id spi_nor_dev_ids[] = {
|
||||
|
||||
<em class="hl-comment">/*
|
||||
* Entries not used in DTs that should be safe to drop after replacing
|
||||
* them with "spi-nor" in platform data.
|
||||
*/</em>
|
||||
{<span class="hl-string">"s25sl064a"</span>}, {<span class="hl-string">"w25x16"</span>}, {<span class="hl-string">"m25p10"</span>}, {<span class="hl-string">"m25px64"</span>},
|
||||
|
||||
<em class="hl-comment">/*
|
||||
* Entries that were used in DTs without "jedec,spi-nor" fallback and
|
||||
* should be kept for backward compatibility.
|
||||
*/</em>
|
||||
{<span class="hl-string">"at25df321a"</span>}, {<span class="hl-string">"at25df641"</span>}, {<span class="hl-string">"at26df081a"</span>},
|
||||
{<span class="hl-string">"mx25l4005a"</span>}, {<span class="hl-string">"mx25l1606e"</span>}, {<span class="hl-string">"mx25l6405d"</span>}, {<span class="hl-string">"mx25l12805d"</span>},
|
||||
{<span class="hl-string">"mx25l25635e"</span>},{<span class="hl-string">"mx66l51235l"</span>},
|
||||
{<span class="hl-string">"n25q064"</span>}, {<span class="hl-string">"n25q128a11"</span>}, {<span class="hl-string">"n25q128a13"</span>}, {<span class="hl-string">"n25q512a"</span>},
|
||||
{<span class="hl-string">"s25fl256s1"</span>}, {<span class="hl-string">"s25fl512s"</span>}, {<span class="hl-string">"s25sl12801"</span>}, {<span class="hl-string">"s25fl008k"</span>},
|
||||
{<span class="hl-string">"s25fl064k"</span>},</pre></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_nor_linux_transplant__section_myj_zvy_c1c" data-tocid="spi_nor_linux_transplant__section_myj_zvy_c1c">文件准备</a></div></li><li class="section-item"><div class="section-title"><a href="#spi_nor_linux_transplant__section_oyj_zvy_c1c" data-tocid="spi_nor_linux_transplant__section_oyj_zvy_c1c">驱动索引</a></div></li><li class="section-item"><div class="section-title"><a href="#spi_nor_linux_transplant__section_ol3_xwy_c1c" data-tocid="spi_nor_linux_transplant__section_ol3_xwy_c1c">spi_nor_manufacturer</a></div></li><li class="section-item"><div class="section-title"><a href="#spi_nor_linux_transplant__section_r2d_zwy_c1c" data-tocid="spi_nor_linux_transplant__section_r2d_zwy_c1c">flash_info</a></div></li><li class="section-item"><div class="section-title"><a href="#spi_nor_linux_transplant__section_rhj_fxy_c1c" data-tocid="spi_nor_linux_transplant__section_rhj_fxy_c1c">id_table</a></div></li></ul></div>
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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/spinor/spinor_uboot_transplant.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">U-Boot 移植</h1><div class="date inPage">20 Nov 2024</div><div style="color: gray;">
|
||||
Read time: 4 minute(s)
|
||||
</div><div class="- topic/body concept/conbody body conbody"><div class="- topic/p p" data-ofbid="d308466e23__20250121171814">SPI NOR 要工作既需要 SoC 端 SPI 模块的驱动能力，也需要对 SPI NOR 模块的正确配置，本章阐述如何进行 SPI NOR 器件的移植工作，以
|
||||
<code class="+ topic/ph pr-d/codeph ph codeph">CFX</code> 的 <code class="+ topic/ph pr-d/codeph ph codeph">GM25Q128A</code> 和 <code class="+ topic/ph pr-d/codeph ph codeph">FudanMicro</code> 的
|
||||
<code class="+ topic/ph pr-d/codeph ph codeph">FM25Q128</code> 为例。<ul class="- topic/ul ul" id="u_boot_transplant__ul_ehm_5vy_c1c" data-ofbid="u_boot_transplant__ul_ehm_5vy_c1c"><li class="- topic/li li" data-ofbid="d308466e38__20250121171814">
|
||||
<p class="- topic/p p" data-ofbid="d308466e40__20250121171814">U-Boot 中移植一款 SPI NOR，最重要的是 JEDEC ID，通过在数据手册中查找 0x9F 命令获得</p>
|
||||
</li><li class="- topic/li li" data-ofbid="d308466e43__20250121171814">
|
||||
<p class="- topic/p p" data-ofbid="d308466e45__20250121171814">其他的参数都可以默认设置，INFO(0xa14017, 0, 64 * 1024, n_sectors, SECT_4K |
|
||||
SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)</p>
|
||||
</li></ul></div><div class="- topic/p p" data-ofbid="d308466e48__20250121171814">U-Boot 中 对不同厂家的 SPI NOR 器件的管理集成度很高， 主要代码在
|
||||
<span class="+ topic/ph sw-d/filepath ph filepath">source/uboot-2021.10/drivers/mtd/spi/spi-nor-ids.c</span>
|
||||
中，添加一款新厂家的新器件需要经过如下步骤：<ol class="- topic/ol ol" id="u_boot_transplant__ol_hf4_j5y_c1c" data-ofbid="u_boot_transplant__ol_hf4_j5y_c1c"><li class="- topic/li li" data-ofbid="d308466e54__20250121171814">添加厂家的宏定义。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="u_boot_transplant__codeblock_zp3_k5y_c1c" data-ofbid="u_boot_transplant__codeblock_zp3_k5y_c1c">config SPI_FLASH_FMSH
|
||||
bool <span class="hl-string">"FudanMicro SPI flash support"</span>
|
||||
help
|
||||
Add support <strong class="hl-keyword">for</strong> various FMSH (Shanghai Fudan Microelectronics Group Company)
|
||||
SPI flash chips (FM25xxx).
|
||||
|
||||
config SPI_FLASH_CFX
|
||||
bool <span class="hl-string">"CFX SPI flash support"</span>
|
||||
help
|
||||
Add support <strong class="hl-keyword">for</strong> various CFX (Zhuhai ChuangFeiXin-Technology)
|
||||
SPI flash chips (GM25xxx).</pre></li><li class="- topic/li li" data-ofbid="d308466e58__20250121171814">在 <span class="+ topic/ph sw-d/filepath ph filepath">spi-nor-ids.c</span> 的 <span class="+ topic/ph sw-d/filepath ph filepath">spi_nor_ids</span> 结构中添加
|
||||
FMHS 和 CFX
|
||||
的相关器件的支持。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="u_boot_transplant__codeblock_ulj_l5y_c1c" data-ofbid="u_boot_transplant__codeblock_ulj_l5y_c1c">#ifdef CONFIG_SPI_FLASH_FMSH
|
||||
<em class="hl-comment">/* Shanghai Fudan Microelectronics Group Company */</em>
|
||||
{ INFO(<span class="hl-string">"FM25Q128"</span>, <span class="hl-number">0xa14017</span>, <span class="hl-number">0</span>, <span class="hl-number">64</span> * <span class="hl-number">1024</span>, <span class="hl-number">256</span>, SECT_<span class="hl-number">4</span>K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
|
||||
{ INFO(<span class="hl-string">"FM25Q64"</span>, <span class="hl-number">0xa14018</span>, <span class="hl-number">0</span>, <span class="hl-number">64</span> * <span class="hl-number">1024</span>, <span class="hl-number">128</span>, SECT_<span class="hl-number">4</span>K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
|
||||
#endif
|
||||
#ifdef CONFIG_SPI_FLASH_CFX
|
||||
<em class="hl-comment">/* Zhuhai ChuangFeiXin Technology */</em>
|
||||
{ INFO(<span class="hl-string">"GM25Q128A"</span>, <span class="hl-number">0x1c4018</span>, <span class="hl-number">0</span>, <span class="hl-number">64</span> * <span class="hl-number">1024</span>, <span class="hl-number">256</span>, SECT_<span class="hl-number">4</span>K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
|
||||
#endif</pre></li><li class="- topic/li li" data-ofbid="d308466e68__20250121171814">设置 <strong class="+ topic/ph hi-d/b ph b">flash_info</strong><div class="- topic/div div" id="u_boot_transplant__div_flash_info_config">
|
||||
<div class="- topic/p p" data-ofbid="d308466e74__20250121171814">flash_info 数据结构主要用来描述某一颗 SPI NOR 的参数，通过 INFO
|
||||
宏来设置，其详细结构为：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="u_boot_transplant__codeblock_y1s_45y_c1c" data-ofbid="u_boot_transplant__codeblock_y1s_45y_c1c"><strong class="hl-keyword">struct</strong> flash_info {
|
||||
<strong class="hl-keyword">char</strong> *name; <em class="hl-comment">//器件名称，一般用器件编号替代</em>
|
||||
u8 id[SPI_NOR_MAX_ID_LEN]; <em class="hl-comment">//JEDEC 授权的器件 ID</em>
|
||||
u8 id_len; <em class="hl-comment">//ID 长度，填 0，自动计算</em>
|
||||
<strong class="hl-keyword">unsigned</strong> sector_size; <em class="hl-comment">//sector size，现在的意义已经改变</em>
|
||||
u16 n_sectors; <em class="hl-comment">//sector 数目，通过 flash size 和 sector size 计算出来</em>
|
||||
u16 page_size; <em class="hl-comment">//页大小， INFO 宏固定为 256</em>
|
||||
u16 addr_width; <em class="hl-comment">//</em><span class="+ topic/ph sw-d/filepath ph filepath">board.dts</span> 中配置
|
||||
u32 flags; <em class="hl-comment">//功能标识</em></pre></div>
|
||||
<ul class="- topic/ul ul" id="u_boot_transplant__ul_g2b_t5y_c1c" data-ofbid="u_boot_transplant__ul_g2b_t5y_c1c"><li class="- topic/li li" data-ofbid="d308466e83__20250121171814"><strong class="+ topic/ph hi-d/b ph b">JEDEC ID</strong>：和 SPI NAND 不同， SPI NOR 的 ID 包含 Manufacture ID 和
|
||||
Device ID 等多项内容，一般为 24 位，描述方式为<div class="table-container"><table class="- topic/table table frame-all" id="u_boot_transplant__table_l5h_55y_c1c" data-ofbid="u_boot_transplant__table_l5h_55y_c1c" data-cols="4"><caption></caption><colgroup><col style="width:25%"/><col style="width:25%"/><col style="width:25%"/><col style="width:25%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="u_boot_transplant__table_l5h_55y_c1c__entry__1">阈值</th><th class="- topic/entry entry colsep-1 rowsep-1" id="u_boot_transplant__table_l5h_55y_c1c__entry__2">名称</th><th class="- topic/entry entry colsep-1 rowsep-1" id="u_boot_transplant__table_l5h_55y_c1c__entry__3">示例</th><th class="- topic/entry entry colsep-0 rowsep-1" id="u_boot_transplant__table_l5h_55y_c1c__entry__4">标记方式</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="u_boot_transplant__table_l5h_55y_c1c__entry__1">MID7 - IDF0</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="u_boot_transplant__table_l5h_55y_c1c__entry__2">Maunfacture ID</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="u_boot_transplant__table_l5h_55y_c1c__entry__3">0xa1</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="u_boot_transplant__table_l5h_55y_c1c__entry__4">JEDEC 分配</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="u_boot_transplant__table_l5h_55y_c1c__entry__1">D15 - D8</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="u_boot_transplant__table_l5h_55y_c1c__entry__2">Memory Type</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="u_boot_transplant__table_l5h_55y_c1c__entry__3">0x40</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="u_boot_transplant__table_l5h_55y_c1c__entry__4">0x9F 命令</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="u_boot_transplant__table_l5h_55y_c1c__entry__1">D7 - D0</td><td class="- topic/entry entry colsep-1 rowsep-0" headers="u_boot_transplant__table_l5h_55y_c1c__entry__2">Memory Desity</td><td class="- topic/entry entry colsep-1 rowsep-0" headers="u_boot_transplant__table_l5h_55y_c1c__entry__3">0x17</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="u_boot_transplant__table_l5h_55y_c1c__entry__4">0x9F 命令</td></tr></tbody></table></div><p class="- topic/p p" data-ofbid="d308466e131__20250121171814">不同厂家在数据手册中描述方法不一样，但现代的 SPI NOR 的 MID 一般通过
|
||||
“Maunfacture/MID” 等字段标注，Device ID 的（D15 - D0） 一般通过 0x9F 命令标注，
|
||||
因此在数据手册中通过搜索 9F 一般能构造出 JEDEC ID， 如下图所示</p><ul class="- topic/ul ul" id="u_boot_transplant__ul_m5h_55y_c1c" data-ofbid="u_boot_transplant__ul_m5h_55y_c1c"><li class="- topic/li li" data-ofbid="d308466e134__20250121171814">0xC84018<div class="- topic/p p" data-ofbid="d308466e136__20250121171814">
|
||||
<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="u_boot_transplant__image_n5h_55y_c1c" src="../../../images/memory/spinor_device_id1.png" width="480" alt="id-1"/></div><br/>
|
||||
</div></li><li class="- topic/li li" data-ofbid="d308466e142__20250121171814">0xC22018<div class="- topic/p p" data-ofbid="d308466e144__20250121171814">
|
||||
<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="u_boot_transplant__image_p5h_55y_c1c" src="../../../images/memory/spinor_device_id2.png" width="480" alt="id-2"/></div><br/>
|
||||
</div></li><li class="- topic/li li" data-ofbid="d308466e150__20250121171814">0xA14017<div class="- topic/p p" data-ofbid="d308466e152__20250121171814">
|
||||
<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="u_boot_transplant__image_r5h_55y_c1c" src="../../../images/memory/spinor_device_id3.png" width="480" alt="id-3"/></div><br/>
|
||||
</div></li></ul></li><li class="- topic/li li" data-ofbid="d308466e158__20250121171814"><strong class="+ topic/ph hi-d/b ph b">sector_size</strong>：Sector Size 是个历史产物，不管是文件系统还是厂家的器件规格都开始对外提供基于
|
||||
Block 的接口，但在名称上还保留了 Sector 的名称，而驱动中则已经完全切换到 Block 的逻辑<p class="- topic/p p" data-ofbid="d308466e162__20250121171814">Sector Size
|
||||
主要定义的是擦除参数，一般的器件提供三种擦除操作</p><div class="table-container"><table class="- topic/table table frame-all" id="u_boot_transplant__table_exs_dvy_c1c" data-ofbid="u_boot_transplant__table_exs_dvy_c1c" data-cols="4"><caption></caption><colgroup><col style="width:26.814814814814813%"/><col style="width:16.296296296296298%"/><col style="width:14.814814814814813%"/><col style="width:42.07407407407407%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="u_boot_transplant__table_exs_dvy_c1c__entry__1">操作方式</th><th class="- topic/entry entry colsep-1 rowsep-1" id="u_boot_transplant__table_exs_dvy_c1c__entry__2">命令</th><th class="- topic/entry entry colsep-1 rowsep-1" id="u_boot_transplant__table_exs_dvy_c1c__entry__3">擦除大小</th><th class="- topic/entry entry colsep-0 rowsep-1" id="u_boot_transplant__table_exs_dvy_c1c__entry__4">备注</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="u_boot_transplant__table_exs_dvy_c1c__entry__1">Sector Erase( SE)</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="u_boot_transplant__table_exs_dvy_c1c__entry__2">0x20</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="u_boot_transplant__table_exs_dvy_c1c__entry__3">4K</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="u_boot_transplant__table_exs_dvy_c1c__entry__4">基础能力，主要做兼容，不做主力</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="u_boot_transplant__table_exs_dvy_c1c__entry__1">32K Block Erase (BE)</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="u_boot_transplant__table_exs_dvy_c1c__entry__2">0x52</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="u_boot_transplant__table_exs_dvy_c1c__entry__3">32K</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="u_boot_transplant__table_exs_dvy_c1c__entry__4">不再使用，和 BE-64 成对</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="u_boot_transplant__table_exs_dvy_c1c__entry__1">64K Block Erase (BE)</td><td class="- topic/entry entry colsep-1 rowsep-0" headers="u_boot_transplant__table_exs_dvy_c1c__entry__2">0xD8</td><td class="- topic/entry entry colsep-1 rowsep-0" headers="u_boot_transplant__table_exs_dvy_c1c__entry__3">64K</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="u_boot_transplant__table_exs_dvy_c1c__entry__4">大部分都支持，如果不支持则必须支持 SE</td></tr></tbody></table></div><p class="- topic/p p" data-ofbid="d308466e208__20250121171814">在驱动中，Sector_Size 描述的实际是 BE-64 的参数，而 BE-64 要求的 size 又是固定的
|
||||
64K，因此该参数的设置原则是：</p><ul class="- topic/ul ul" id="u_boot_transplant__ul_fxs_dvy_c1c" data-ofbid="u_boot_transplant__ul_fxs_dvy_c1c"><li class="- topic/li li" data-ofbid="d308466e211__20250121171814">在数据手册中，如果支持 64K Block Erase (0xD8）命令，则设置为 ‘64 * 1024’</li><li class="- topic/li li" data-ofbid="d308466e213__20250121171814">在数据手册中, 如果不支持 64K Block Erase (0xD8）命令，则设置为 ‘4 * 1024’</li></ul><div class="- topic/p p" data-ofbid="d308466e215__20250121171814">
|
||||
<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="u_boot_transplant__image_gxs_dvy_c1c" src="../../../images/memory/spinor_sector_size.png" width="480" alt="se"/></div><br/>
|
||||
</div></li><li class="- topic/li li" data-ofbid="d308466e221__20250121171814"><strong class="+ topic/ph hi-d/b ph b">n_sectors</strong>：Sector (Block) 数目通过计算得到， 计算公式为 (（flash size）/
|
||||
sector size)，需要注意不同参数使用 Byte（B） 还是 bit（b） 描述<ul class="- topic/ul ul" id="u_boot_transplant__ul_gzk_3vy_c1c" data-ofbid="u_boot_transplant__ul_gzk_3vy_c1c"><li class="- topic/li li" data-ofbid="d308466e226__20250121171814">
|
||||
<p class="- topic/p p" data-ofbid="d308466e228__20250121171814">gd25q128： 128Mb / 64KB = 256</p>
|
||||
</li><li class="- topic/li li" data-ofbid="d308466e231__20250121171814">
|
||||
<p class="- topic/p p" data-ofbid="d308466e233__20250121171814">FM25Q128: 128Mb / 64KB = 256</p>
|
||||
</li><li class="- topic/li li" data-ofbid="d308466e236__20250121171814">
|
||||
<p class="- topic/p p" data-ofbid="d308466e238__20250121171814">FM25Q64: 64Mb / 64KB = 128</p>
|
||||
</li></ul></li><li class="- topic/li li" data-ofbid="d308466e241__20250121171814"><strong class="+ topic/ph hi-d/b ph b">flags</strong>：设置额外的功能标志。<ul class="- topic/ul ul" id="u_boot_transplant__ul_sxx_jvy_c1c" data-ofbid="u_boot_transplant__ul_sxx_jvy_c1c"><li class="- topic/li li" data-ofbid="d308466e246__20250121171814">SECT_4K 建议均设置，此功能用来兼容 Sector Erase( SE)
|
||||
的支持，在一些特殊情况下可以继续工作</li><li class="- topic/li li" data-ofbid="d308466e248__20250121171814">如果支持 0xBB 命令，则打开 SPI_NOR_DUAL_READ</li><li class="- topic/li li" data-ofbid="d308466e250__20250121171814">如果支持 0xEB 命令，则打开 SPI_NOR_QUAD_READ<div class="- topic/p p" data-ofbid="d308466e252__20250121171814">
|
||||
<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="u_boot_transplant__image_gds_5jv_mbc" src="../../../images/memory/spinor_qspi_read.png" width="480" alt="qspi"/></div><br/>
|
||||
</div></li><li class="- topic/li li" data-ofbid="d308466e258__20250121171814">如果有 Status Register，则打开 USE_FSR，是一种状态呈现，非必须 <div class="- topic/p p" data-ofbid="d308466e260__20250121171814">
|
||||
<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="u_boot_transplant__image_vxx_jvy_c1c" src="../../../images/memory/spinor_user_fsr.png" width="480" alt="fsr"/></div><br/>
|
||||
</div></li></ul></li></ul>
|
||||
</div></li></ol></div></div></article></main></div>
|
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|
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|
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|
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|
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173
doc/topics/sdk/spinor/spinor_user_guide.html
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<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-cn" lang="zh-cn" data-whc_version="26.0">
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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/spinor/spinor_user_guide.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">SPI NOR 使用指南</h1><div class="date inPage">27 Nov 2024</div><div style="color: gray;">
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Read time: 1 minute(s)
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</div><div class="- topic/body concept/conbody body conbody"><div class="- topic/p p" data-ofbid="d157104e22__20250121171615">SPI NOR 属于 SPI 的从设备，在内核中相关驱动通过 <code class="+ topic/ph pr-d/codeph ph codeph">SPI MEM</code> 对接到 SPI 子系统。 在 SPI 控制器初始化时，SPI
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驱动会检查该控制器下是否有挂载的 SPI NOR，有则添加到 SPI BUS
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中。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="spi_nor_user_guide__codeblock_lw1_f5y_c1c" data-ofbid="spi_nor_user_guide__codeblock_lw1_f5y_c1c">aic_spi_probe(dev);
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|-> spi_register_controller(ctlr);/spi_register_master(ctlr);<em class="hl-comment">// spi_register_master 是一个宏</em>
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|-> of_register_spi_devices(ctlr);
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|-> spi = of_register_spi_device(ctlr, nc);
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|-> spi = spi_alloc_device(ctlr);
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|-> of_spi_parse_dt(ctlr, spi, nc);
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|-> rc = spi_add_device(spi);
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<em class="hl-comment">// 将 SPI device 添加到 SPI 总线 spi_bus_type 中</em></pre></div><p class="- topic/p p" data-ofbid="d157104e29__20250121171615">在调用 <code class="+ topic/ph pr-d/codeph ph codeph">spi_add_device</code> 的过程中，会查找和匹配对应设备的驱动程序（如果这时候对
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应的驱动程序还没有被添加到系统中，则在这里先将设备添加到 Bus，等到对应驱动程序 被添加进来时，再进行匹配。）</p><div class="table-container"><table class="- topic/table table frame-all" id="spi_nor_user_guide__table_ebl_25y_c1c" data-ofbid="spi_nor_user_guide__table_ebl_25y_c1c" data-cols="2"><caption></caption><colgroup><col style="width:28.653295128939828%"/><col style="width:71.34670487106017%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="spi_nor_user_guide__table_ebl_25y_c1c__entry__1">模块</th><th class="- topic/entry entry colsep-0 rowsep-1" id="spi_nor_user_guide__table_ebl_25y_c1c__entry__2">驱动源码路径</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="spi_nor_user_guide__table_ebl_25y_c1c__entry__1">Linux</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="spi_nor_user_guide__table_ebl_25y_c1c__entry__2"><span class="+ topic/ph sw-d/filepath ph filepath">source/linux-5.10/drivers/mtd/spi-nor/</span></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="spi_nor_user_guide__table_ebl_25y_c1c__entry__1">Uboot</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="spi_nor_user_guide__table_ebl_25y_c1c__entry__2"><span class="+ topic/ph sw-d/filepath ph filepath">source/uboot-2021.10/drivers/mtd/spi/</span></td></tr></tbody></table></div></div></article></main></div>
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