From 54b04d96651a166088477ccf513fa534b30b2132 Mon Sep 17 00:00:00 2001
From: Nick Brassel <nick@tzarc.org>
Date: Tue, 19 May 2020 10:34:00 +1000
Subject: Add SPI 25xx EEPROM support. (#8780)

---
 drivers/eeprom/eeprom_spi.h | 80 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 drivers/eeprom/eeprom_spi.h

(limited to 'drivers/eeprom/eeprom_spi.h')

diff --git a/drivers/eeprom/eeprom_spi.h b/drivers/eeprom/eeprom_spi.h
new file mode 100644
index 000000000..282c60356
--- /dev/null
+++ b/drivers/eeprom/eeprom_spi.h
@@ -0,0 +1,80 @@
+/* Copyright 2020 Nick Brassel (tzarc)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+/*
+    The slave select pin of the EEPROM.
+    This needs to be a normal GPIO pin_t value, such as A7.
+*/
+#ifndef EXTERNAL_EEPROM_SPI_SLAVE_SELECT_PIN
+#    error "No chip select pin defined -- missing EXTERNAL_EEPROM_SPI_SLAVE_SELECT_PIN"
+#endif
+
+/*
+    The clock divisor for SPI to ensure that the MCU is within the
+    specifications of the EEPROM chip. Generally this will be PCLK divided by
+    the intended divisor -- check your clock settings and the datasheet of
+    your EEPROM.
+*/
+#ifndef EXTERNAL_EEPROM_SPI_CLOCK_DIVISOR
+#    ifdef __AVR__
+#        define EXTERNAL_EEPROM_SPI_CLOCK_DIVISOR 8
+#    else
+#        define EXTERNAL_EEPROM_SPI_CLOCK_DIVISOR 64
+#    endif
+#endif
+
+/*
+    The SPI mode to communicate with the EEPROM.
+*/
+#ifndef EXTERNAL_EEPROM_SPI_MODE
+#    define EXTERNAL_EEPROM_SPI_MODE 0
+#endif
+
+/*
+    Whether or not the SPI communication between the MCU and EEPROM should be
+    LSB-first.
+*/
+#ifndef EXTERNAL_EEPROM_SPI_LSBFIRST
+#    define EXTERNAL_EEPROM_SPI_LSBFIRST false
+#endif
+
+/*
+    The total size of the EEPROM, in bytes. The EEPROM datasheet will usually
+    specify this value in kbits, and will require conversion to bytes.
+*/
+#ifndef EXTERNAL_EEPROM_BYTE_COUNT
+#    define EXTERNAL_EEPROM_BYTE_COUNT 8192
+#endif
+
+/*
+    The page size in bytes of the EEPROM, as specified in the datasheet.
+*/
+#ifndef EXTERNAL_EEPROM_PAGE_SIZE
+#    define EXTERNAL_EEPROM_PAGE_SIZE 32
+#endif
+
+/*
+    The address size in bytes of the EEPROM. For EEPROMs with <=256 bytes, this
+    will likely be 1. For EEPROMs >256 and <=65536, this will be 2. For EEPROMs
+    >65536, this will likely need to be 4.
+
+    As expected, consult the datasheet for specifics of your EEPROM.
+*/
+#ifndef EXTERNAL_EEPROM_ADDRESS_SIZE
+#    define EXTERNAL_EEPROM_ADDRESS_SIZE 2
+#endif
-- 
cgit v1.2.3

lect name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit/openwrt/upstream/tree/?h=v22.03.6&amp;id=d27f6e2c5d2a2315cc8fe684d117c80aa9984ca8'>root</a>/<a href='/cgit/openwrt/upstream/tree/target?h=v22.03.6&amp;id=d27f6e2c5d2a2315cc8fe684d117c80aa9984ca8'>target</a>/<a href='/cgit/openwrt/upstream/tree/target/linux?h=v22.03.6&amp;id=d27f6e2c5d2a2315cc8fe684d117c80aa9984ca8'>linux</a>/<a href='/cgit/openwrt/upstream/tree/target/linux/generic?h=v22.03.6&amp;id=d27f6e2c5d2a2315cc8fe684d117c80aa9984ca8'>generic</a>/<a href='/cgit/openwrt/upstream/tree/target/linux/generic/hack-5.10?h=v22.03.6&amp;id=d27f6e2c5d2a2315cc8fe684d117c80aa9984ca8'>hack-5.10</a>/<a href='/cgit/openwrt/upstream/tree/target/linux/generic/hack-5.10/410-block-fit-partition-parser.patch?h=v22.03.6&amp;id=d27f6e2c5d2a2315cc8fe684d117c80aa9984ca8'>410-block-fit-partition-parser.patch</a></div><div class='content'>blob: ec934728517412f42a030ce2d1e5fcb264d80b32 (<a href='/cgit/openwrt/upstream/plain/target/linux/generic/hack-5.10/410-block-fit-partition-parser.patch?h=v22.03.6&amp;id=d27f6e2c5d2a2315cc8fe684d117c80aa9984ca8'>plain</a>)
<table summary='blob content' class='blob'>
<tr><td class='linenumbers'><pre><a id='n1' href='#n1'>1</a>
<a id='n2' href='#n2'>2</a>
<a id='n3' href='#n3'>3</a>
<a id='n4' href='#n4'>4</a>
<a id='n5' href='#n5'>5</a>
<a id='n6' href='#n6'>6</a>
<a id='n7' href='#n7'>7</a>
<a id='n8' href='#n8'>8</a>
<a id='n9' href='#n9'>9</a>
<a id='n10' href='#n10'>10</a>
<a id='n11' href='#n11'>11</a>
<a id='n12' href='#n12'>12</a>
<a id='n13' href='#n13'>13</a>
<a id='n14' href='#n14'>14</a>
<a id='n15' href='#n15'>15</a>
<a id='n16' href='#n16'>16</a>
<a id='n17' href='#n17'>17</a>
<a id='n18' href='#n18'>18</a>
<a id='n19' href='#n19'>19</a>
<a id='n20' href='#n20'>20</a>
<a id='n21' href='#n21'>21</a>
<a id='n22' href='#n22'>22</a>
<a id='n23' href='#n23'>23</a>
<a id='n24' href='#n24'>24</a>
<a id='n25' href='#n25'>25</a>
<a id='n26' href='#n26'>26</a>
<a id='n27' href='#n27'>27</a>
<a id='n28' href='#n28'>28</a>
<a id='n29' href='#n29'>29</a>
<a id='n30' href='#n30'>30</a>
<a id='n31' href='#n31'>31</a>
<a id='n32' href='#n32'>32</a>
<a id='n33' href='#n33'>33</a>
<a id='n34' href='#n34'>34</a>
<a id='n35' href='#n35'>35</a>
<a id='n36' href='#n36'>36</a>
<a id='n37' href='#n37'>37</a>
<a id='n38' href='#n38'>38</a>
<a id='n39' href='#n39'>39</a>
<a id='n40' href='#n40'>40</a>
<a id='n41' href='#n41'>41</a>
<a id='n42' href='#n42'>42</a>
<a id='n43' href='#n43'>43</a>
<a id='n44' href='#n44'>44</a>
<a id='n45' href='#n45'>45</a>
<a id='n46' href='#n46'>46</a>
<a id='n47' href='#n47'>47</a>
<a id='n48' href='#n48'>48</a>
<a id='n49' href='#n49'>49</a>
<a id='n50' href='#n50'>50</a>
<a id='n51' href='#n51'>51</a>
<a id='n52' href='#n52'>52</a>
<a id='n53' href='#n53'>53</a>
<a id='n54' href='#n54'>54</a>
<a id='n55' href='#n55'>55</a>
<a id='n56' href='#n56'>56</a>
<a id='n57' href='#n57'>57</a>
<a id='n58' href='#n58'>58</a>
<a id='n59' href='#n59'>59</a>
<a id='n60' href='#n60'>60</a>
<a id='n61' href='#n61'>61</a>
<a id='n62' href='#n62'>62</a>
<a id='n63' href='#n63'>63</a>
<a id='n64' href='#n64'>64</a>
<a id='n65' href='#n65'>65</a>
<a id='n66' href='#n66'>66</a>
<a id='n67' href='#n67'>67</a>
<a id='n68' href='#n68'>68</a>
<a id='n69' href='#n69'>69</a>
<a id='n70' href='#n70'>70</a>
<a id='n71' href='#n71'>71</a>
<a id='n72' href='#n72'>72</a>
<a id='n73' href='#n73'>73</a>
<a id='n74' href='#n74'>74</a>
<a id='n75' href='#n75'>75</a>
<a id='n76' href='#n76'>76</a>
<a id='n77' href='#n77'>77</a>
<a id='n78' href='#n78'>78</a>
<a id='n79' href='#n79'>79</a>
<a id='n80' href='#n80'>80</a>
<a id='n81' href='#n81'>81</a>
<a id='n82' href='#n82'>82</a>
<a id='n83' href='#n83'>83</a>
<a id='n84' href='#n84'>84</a>
<a id='n85' href='#n85'>85</a>
<a id='n86' href='#n86'>86</a>
<a id='n87' href='#n87'>87</a>
<a id='n88' href='#n88'>88</a>
<a id='n89' href='#n89'>89</a>
<a id='n90' href='#n90'>90</a>
<a id='n91' href='#n91'>91</a>
<a id='n92' href='#n92'>92</a>
<a id='n93' href='#n93'>93</a>
<a id='n94' href='#n94'>94</a>
<a id='n95' href='#n95'>95</a>
<a id='n96' href='#n96'>96</a>
<a id='n97' href='#n97'>97</a>
<a id='n98' href='#n98'>98</a>
<a id='n99' href='#n99'>99</a>
<a id='n100' href='#n100'>100</a>
<a id='n101' href='#n101'>101</a>
<a id='n102' href='#n102'>102</a>
<a id='n103' href='#n103'>103</a>
<a id='n104' href='#n104'>104</a>
<a id='n105' href='#n105'>105</a>
<a id='n106' href='#n106'>106</a>
<a id='n107' href='#n107'>107</a>
<a id='n108' href='#n108'>108</a>
<a id='n109' href='#n109'>109</a>
<a id='n110' href='#n110'>110</a>
<a id='n111' href='#n111'>111</a>
<a id='n112' href='#n112'>112</a>
<a id='n113' href='#n113'>113</a>
<a id='n114' href='#n114'>114</a>
<a id='n115' href='#n115'>115</a>
<a id='n116' href='#n116'>116</a>
<a id='n117' href='#n117'>117</a>
<a id='n118' href='#n118'>118</a>
<a id='n119' href='#n119'>119</a>
<a id='n120' href='#n120'>120</a>
<a id='n121' href='#n121'>121</a>
<a id='n122' href='#n122'>122</a>
<a id='n123' href='#n123'>123</a>
<a id='n124' href='#n124'>124</a>
<a id='n125' href='#n125'>125</a>
<a id='n126' href='#n126'>126</a>
<a id='n127' href='#n127'>127</a>
<a id='n128' href='#n128'>128</a>
<a id='n129' href='#n129'>129</a>
<a id='n130' href='#n130'>130</a>
<a id='n131' href='#n131'>131</a>
<a id='n132' href='#n132'>132</a>
<a id='n133' href='#n133'>133</a>
<a id='n134' href='#n134'>134</a>
<a id='n135' href='#n135'>135</a>
<a id='n136' href='#n136'>136</a>
<a id='n137' href='#n137'>137</a>
<a id='n138' href='#n138'>138</a>
<a id='n139' href='#n139'>139</a>
<a id='n140' href='#n140'>140</a>
<a id='n141' href='#n141'>141</a>
<a id='n142' href='#n142'>142</a>
<a id='n143' href='#n143'>143</a>
<a id='n144' href='#n144'>144</a>
<a id='n145' href='#n145'>145</a>
<a id='n146' href='#n146'>146</a>
<a id='n147' href='#n147'>147</a>
<a id='n148' href='#n148'>148</a>
<a id='n149' href='#n149'>149</a>
<a id='n150' href='#n150'>150</a>
<a id='n151' href='#n151'>151</a>
<a id='n152' href='#n152'>152</a>
<a id='n153' href='#n153'>153</a>
<a id='n154' href='#n154'>154</a>
<a id='n155' href='#n155'>155</a>
<a id='n156' href='#n156'>156</a>
<a id='n157' href='#n157'>157</a>
<a id='n158' href='#n158'>158</a>
<a id='n159' href='#n159'>159</a>
<a id='n160' href='#n160'>160</a>
<a id='n161' href='#n161'>161</a>
<a id='n162' href='#n162'>162</a>
<a id='n163' href='#n163'>163</a>
<a id='n164' href='#n164'>164</a>
<a id='n165' href='#n165'>165</a>
<a id='n166' href='#n166'>166</a>
<a id='n167' href='#n167'>167</a>
<a id='n168' href='#n168'>168</a>
<a id='n169' href='#n169'>169</a>
<a id='n170' href='#n170'>170</a>
<a id='n171' href='#n171'>171</a>
<a id='n172' href='#n172'>172</a>
<a id='n173' href='#n173'>173</a>
<a id='n174' href='#n174'>174</a>
<a id='n175' href='#n175'>175</a>
<a id='n176' href='#n176'>176</a>
<a id='n177' href='#n177'>177</a>
<a id='n178' href='#n178'>178</a>
<a id='n179' href='#n179'>179</a>
<a id='n180' href='#n180'>180</a>
<a id='n181' href='#n181'>181</a>
<a id='n182' href='#n182'>182</a>
<a id='n183' href='#n183'>183</a>
<a id='n184' href='#n184'>184</a>
<a id='n185' href='#n185'>185</a>
<a id='n186' href='#n186'>186</a>
<a id='n187' href='#n187'>187</a>
<a id='n188' href='#n188'>188</a>
<a id='n189' href='#n189'>189</a>
<a id='n190' href='#n190'>190</a>
<a id='n191' href='#n191'>191</a>
<a id='n192' href='#n192'>192</a>
<a id='n193' href='#n193'>193</a>
<a id='n194' href='#n194'>194</a>
<a id='n195' href='#n195'>195</a>
<a id='n196' href='#n196'>196</a>
<a id='n197' href='#n197'>197</a>
<a id='n198' href='#n198'>198</a>
<a id='n199' href='#n199'>199</a>
<a id='n200' href='#n200'>200</a>
<a id='n201' href='#n201'>201</a>
<a id='n202' href='#n202'>202</a>
<a id='n203' href='#n203'>203</a>
<a id='n204' href='#n204'>204</a>
<a id='n205' href='#n205'>205</a>
<a id='n206' href='#n206'>206</a>
<a id='n207' href='#n207'>207</a>
<a id='n208' href='#n208'>208</a>
<a id='n209' href='#n209'>209</a>
<a id='n210' href='#n210'>210</a>
<a id='n211' href='#n211'>211</a>
<a id='n212' href='#n212'>212</a>
<a id='n213' href='#n213'>213</a>
<a id='n214' href='#n214'>214</a>
<a id='n215' href='#n215'>215</a>
<a id='n216' href='#n216'>216</a>
<a id='n217' href='#n217'>217</a>
<a id='n218' href='#n218'>218</a>
<a id='n219' href='#n219'>219</a>
<a id='n220' href='#n220'>220</a>
<a id='n221' href='#n221'>221</a>
<a id='n222' href='#n222'>222</a>
<a id='n223' href='#n223'>223</a>
<a id='n224' href='#n224'>224</a>
<a id='n225' href='#n225'>225</a>
<a id='n226' href='#n226'>226</a>
<a id='n227' href='#n227'>227</a>
<a id='n228' href='#n228'>228</a>
<a id='n229' href='#n229'>229</a>
<a id='n230' href='#n230'>230</a>
<a id='n231' href='#n231'>231</a>
<a id='n232' href='#n232'>232</a>
<a id='n233' href='#n233'>233</a>
<a id='n234' href='#n234'>234</a>
<a id='n235' href='#n235'>235</a>
<a id='n236' href='#n236'>236</a>
<a id='n237' href='#n237'>237</a>
<a id='n238' href='#n238'>238</a>
<a id='n239' href='#n239'>239</a>
<a id='n240' href='#n240'>240</a>
<a id='n241' href='#n241'>241</a>
<a id='n242' href='#n242'>242</a>
<a id='n243' href='#n243'>243</a>
<a id='n244' href='#n244'>244</a>
<a id='n245' href='#n245'>245</a>
<a id='n246' href='#n246'>246</a>
<a id='n247' href='#n247'>247</a>
<a id='n248' href='#n248'>248</a>
<a id='n249' href='#n249'>249</a>
<a id='n250' href='#n250'>250</a>
<a id='n251' href='#n251'>251</a>
<a id='n252' href='#n252'>252</a>
<a id='n253' href='#n253'>253</a>
<a id='n254' href='#n254'>254</a>
<a id='n255' href='#n255'>255</a>
</pre></td>
<td class='lines'><pre><code><style>pre { line-height: 125%; margin: 0; }
td.linenos pre { color: #000000; background-color: #f0f0f0; padding: 0 5px 0 5px; }
span.linenos { color: #000000; background-color: #f0f0f0; padding: 0 5px 0 5px; }
td.linenos pre.special { color: #000000; background-color: #ffffc0; padding: 0 5px 0 5px; }
span.linenos.special { color: #000000; background-color: #ffffc0; padding: 0 5px 0 5px; }
.highlight .hll { background-color: #ffffcc }
.highlight { background: #ffffff; }
.highlight .c { color: #888888 } /* Comment */
.highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
.highlight .k { color: #008800; font-weight: bold } /* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
.highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .gr { color: #aa0000 } /* Generic.Error */
.highlight .gh { color: #333333 } /* Generic.Heading */
.highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #666666 } /* Generic.Subheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
.highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */
.highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */
.highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */
.highlight .kp { color: #008800 } /* Keyword.Pseudo */
.highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */
.highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */
.highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */
.highlight .na { color: #336699 } /* Name.Attribute */
.highlight .nb { color: #003388 } /* Name.Builtin */
.highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */
.highlight .no { color: #003366; font-weight: bold } /* Name.Constant */
.highlight .nd { color: #555555 } /* Name.Decorator */
.highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */
.highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */
.highlight .nl { color: #336699; font-style: italic } /* Name.Label */
.highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */
.highlight .py { color: #336699; font-weight: bold } /* Name.Property */
.highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */
.highlight .nv { color: #336699 } /* Name.Variable */
.highlight .ow { color: #008800 } /* Operator.Word */
.highlight .w { color: #bbbbbb } /* Text.Whitespace */
.highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */
.highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */
.highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */
.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
.highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */
.highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */
.highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */
.highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */
.highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */
.highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */
.highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */
.highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */
.highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */
.highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */
.highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */
.highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */
.highlight .vc { color: #336699 } /* Name.Variable.Class */
.highlight .vg { color: #dd7700 } /* Name.Variable.Global */
.highlight .vi { color: #3333bb } /* Name.Variable.Instance */
.highlight .vm { color: #336699 } /* Name.Variable.Magic */
.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */</style><div class="highlight"><pre><span></span><span class="gd">--- a/block/blk.h</span>
<span class="gi">+++ b/block/blk.h</span>
<span class="gu">@@ -357,6 +357,7 @@ char *disk_name(struct gendisk *hd, int</span>
 #define ADDPART_FLAG_NONE	0
 #define ADDPART_FLAG_RAID	1
 #define ADDPART_FLAG_WHOLEDISK	2
<span class="gi">+#define ADDPART_FLAG_ROOTDEV	4</span>
 void delete_partition(struct hd_struct *part);
 int bdev_add_partition(struct block_device *bdev, int partno,
 		sector_t start, sector_t length);
<span class="gd">--- a/block/partitions/Kconfig</span>
<span class="gi">+++ b/block/partitions/Kconfig</span>
<span class="gu">@@ -101,6 +101,13 @@ config ATARI_PARTITION</span>
 	  Say Y here if you would like to use hard disks under Linux which
 	  were partitioned under the Atari OS.
 
<span class="gi">+config FIT_PARTITION</span>
<span class="gi">+	bool &quot;Flattened-Image-Tree (FIT) partition support&quot; if PARTITION_ADVANCED</span>
<span class="gi">+	default n</span>
<span class="gi">+	help</span>
<span class="gi">+	  Say Y here if your system needs to mount the filesystem part of</span>
<span class="gi">+	  a Flattened-Image-Tree (FIT) image commonly used with Das U-Boot.</span>
<span class="gi">+</span>
 config IBM_PARTITION
 	bool &quot;IBM disk label and partition support&quot;
 	depends on PARTITION_ADVANCED &amp;&amp; S390
<span class="gd">--- a/block/partitions/Makefile</span>
<span class="gi">+++ b/block/partitions/Makefile</span>
<span class="gu">@@ -8,6 +8,7 @@ obj-$(CONFIG_ACORN_PARTITION) += acorn.o</span>
 obj-$(CONFIG_AMIGA_PARTITION) += amiga.o
 obj-$(CONFIG_ATARI_PARTITION) += atari.o
 obj-$(CONFIG_AIX_PARTITION) += aix.o
<span class="gi">+obj-$(CONFIG_FIT_PARTITION) += fit.o</span>
 obj-$(CONFIG_CMDLINE_PARTITION) += cmdline.o
 obj-$(CONFIG_MAC_PARTITION) += mac.o
 obj-$(CONFIG_LDM_PARTITION) += ldm.o
<span class="gd">--- a/block/partitions/check.h</span>
<span class="gi">+++ b/block/partitions/check.h</span>
<span class="gu">@@ -58,6 +58,7 @@ int amiga_partition(struct parsed_partit</span>
 int atari_partition(struct parsed_partitions *state);
 int cmdline_partition(struct parsed_partitions *state);
 int efi_partition(struct parsed_partitions *state);
<span class="gi">+int fit_partition(struct parsed_partitions *state);</span>
 int ibm_partition(struct parsed_partitions *);
 int karma_partition(struct parsed_partitions *state);
 int ldm_partition(struct parsed_partitions *state);
<span class="gu">@@ -68,3 +69,5 @@ int sgi_partition(struct parsed_partitio</span>
 int sun_partition(struct parsed_partitions *state);
 int sysv68_partition(struct parsed_partitions *state);
 int ultrix_partition(struct parsed_partitions *state);
<span class="gi">+</span>
<span class="gi">+int parse_fit_partitions(struct parsed_partitions *state, u64 start_sector, u64 nr_sectors, int *slot, int add_remain);</span>
<span class="gd">--- a/block/partitions/core.c</span>
<span class="gi">+++ b/block/partitions/core.c</span>
<span class="gu">@@ -10,6 +10,10 @@</span>
 #include &lt;linux/vmalloc.h&gt;
 #include &lt;linux/blktrace_api.h&gt;
 #include &lt;linux/raid/detect.h&gt;
<span class="gi">+#ifdef CONFIG_FIT_PARTITION</span>
<span class="gi">+#include &lt;linux/root_dev.h&gt;</span>
<span class="gi">+#endif</span>
<span class="gi">+</span>
 #include &quot;check.h&quot;
 
 static int (*check_part[])(struct parsed_partitions *) = {
<span class="gu">@@ -46,6 +50,9 @@ static int (*check_part[])(struct parsed</span>
 #ifdef CONFIG_EFI_PARTITION
 	efi_partition,		/* this must come before msdos */
 #endif
<span class="gi">+#ifdef CONFIG_FIT_PARTITION</span>
<span class="gi">+	fit_partition,</span>
<span class="gi">+#endif</span>
 #ifdef CONFIG_SGI_PARTITION
 	sgi_partition,
 #endif
<span class="gu">@@ -215,6 +222,18 @@ static ssize_t part_discard_alignment_sh</span>
 				p-&gt;start_sect));
 }
 
<span class="gi">+static ssize_t part_name_show(struct device *dev,</span>
<span class="gi">+			      struct device_attribute *attr, char *buf)</span>
<span class="gi">+{</span>
<span class="gi">+	struct hd_struct *p = dev_to_part(dev);</span>
<span class="gi">+</span>
<span class="gi">+	if (p-&gt;info &amp;&amp; p-&gt;info-&gt;volname)</span>
<span class="gi">+		return sprintf(buf, &quot;%s\n&quot;, p-&gt;info-&gt;volname);</span>
<span class="gi">+</span>
<span class="gi">+	buf[0] = &#39;\0&#39;;</span>
<span class="gi">+	return 0;</span>
<span class="gi">+}</span>
<span class="gi">+</span>
 static DEVICE_ATTR(partition, 0444, part_partition_show, NULL);
 static DEVICE_ATTR(start, 0444, part_start_show, NULL);
 static DEVICE_ATTR(size, 0444, part_size_show, NULL);
<span class="gu">@@ -223,6 +242,7 @@ static DEVICE_ATTR(alignment_offset, 044</span>
 static DEVICE_ATTR(discard_alignment, 0444, part_discard_alignment_show, NULL);
 static DEVICE_ATTR(stat, 0444, part_stat_show, NULL);
 static DEVICE_ATTR(inflight, 0444, part_inflight_show, NULL);
<span class="gi">+static DEVICE_ATTR(name, 0444, part_name_show, NULL);</span>
 #ifdef CONFIG_FAIL_MAKE_REQUEST
 static struct device_attribute dev_attr_fail =
 	__ATTR(make-it-fail, 0644, part_fail_show, part_fail_store);
<span class="gu">@@ -237,6 +257,7 @@ static struct attribute *part_attrs[] =</span>
 	&amp;dev_attr_discard_alignment.attr,
 	&amp;dev_attr_stat.attr,
 	&amp;dev_attr_inflight.attr,
<span class="gi">+	&amp;dev_attr_name.attr,</span>
 #ifdef CONFIG_FAIL_MAKE_REQUEST
 	&amp;dev_attr_fail.attr,
 #endif
<span class="gu">@@ -694,6 +715,11 @@ static bool blk_add_partition(struct gen</span>
 	    (state-&gt;parts[p].flags &amp; ADDPART_FLAG_RAID))
 		md_autodetect_dev(part_to_dev(part)-&gt;devt);
 
<span class="gi">+#ifdef CONFIG_FIT_PARTITION</span>
<span class="gi">+	if ((state-&gt;parts[p].flags &amp; ADDPART_FLAG_ROOTDEV) &amp;&amp; ROOT_DEV == 0)</span>
<span class="gi">+		ROOT_DEV = part_to_dev(part)-&gt;devt;</span>
<span class="gi">+#endif</span>
<span class="gi">+</span>
 	return true;
 }
 
<span class="gd">--- a/drivers/mtd/ubi/block.c</span>
<span class="gi">+++ b/drivers/mtd/ubi/block.c</span>
<span class="gu">@@ -396,7 +396,11 @@ int ubiblock_create(struct ubi_volume_in</span>
 	dev-&gt;leb_size = vi-&gt;usable_leb_size;
 
 	/* Initialize the gendisk of this ubiblock device */
<span class="gi">+#ifdef CONFIG_FIT_PARTITION</span>
<span class="gi">+	gd = alloc_disk(0);</span>
<span class="gi">+#else</span>
 	gd = alloc_disk(1);
<span class="gi">+#endif</span>
 	if (!gd) {
 		pr_err(&quot;UBI: block: alloc_disk failed\n&quot;);
 		ret = -ENODEV;
<span class="gu">@@ -413,6 +417,9 @@ int ubiblock_create(struct ubi_volume_in</span>
 		goto out_put_disk;
 	}
 	gd-&gt;private_data = dev;
<span class="gi">+#ifdef CONFIG_FIT_PARTITION</span>
<span class="gi">+	gd-&gt;flags |= GENHD_FL_EXT_DEVT;</span>
<span class="gi">+#endif</span>
 	sprintf(gd-&gt;disk_name, &quot;ubiblock%d_%d&quot;, dev-&gt;ubi_num, dev-&gt;vol_id);
 	set_capacity(gd, disk_capacity);
 	dev-&gt;gd = gd;
<span class="gd">--- a/block/partitions/efi.c</span>
<span class="gi">+++ b/block/partitions/efi.c</span>
<span class="gu">@@ -706,6 +706,9 @@ int efi_partition(struct parsed_partitio</span>
 	gpt_entry *ptes = NULL;
 	u32 i;
 	unsigned ssz = bdev_logical_block_size(state-&gt;bdev) / 512;
<span class="gi">+#ifdef CONFIG_FIT_PARTITION</span>
<span class="gi">+	u32 extra_slot = 64;</span>
<span class="gi">+#endif</span>
 
 	if (!find_valid_gpt(state, &amp;gpt, &amp;ptes) || !gpt || !ptes) {
 		kfree(gpt);
<span class="gu">@@ -739,6 +742,11 @@ int efi_partition(struct parsed_partitio</span>
 				ARRAY_SIZE(ptes[i].partition_name));
 		utf16_le_to_7bit(ptes[i].partition_name, label_max, info-&gt;volname);
 		state-&gt;parts[i + 1].has_info = true;
<span class="gi">+#ifdef CONFIG_FIT_PARTITION</span>
<span class="gi">+		/* If this is a U-Boot FIT volume it may have subpartitions */</span>
<span class="gi">+		if (!efi_guidcmp(ptes[i].partition_type_guid, PARTITION_LINUX_FIT_GUID))</span>
<span class="gi">+			(void) parse_fit_partitions(state, start * ssz, size * ssz, &amp;extra_slot, 1);</span>
<span class="gi">+#endif</span>
 	}
 	kfree(ptes);
 	kfree(gpt);
<span class="gd">--- a/block/partitions/efi.h</span>
<span class="gi">+++ b/block/partitions/efi.h</span>
<span class="gu">@@ -52,6 +52,9 @@</span>
 #define PARTITION_LINUX_LVM_GUID \
     EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \
               0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28)
<span class="gi">+#define PARTITION_LINUX_FIT_GUID \</span>
<span class="gi">+    EFI_GUID( 0xcae9be83, 0xb15f, 0x49cc, \</span>
<span class="gi">+              0x86, 0x3f, 0x08, 0x1b, 0x74, 0x4a, 0x2d, 0x93)</span>
 
 typedef struct _gpt_header {
 	__le64 signature;
<span class="gd">--- a/drivers/mtd/mtdblock.c</span>
<span class="gi">+++ b/drivers/mtd/mtdblock.c</span>
<span class="gu">@@ -334,7 +334,11 @@ static void mtdblock_remove_dev(struct m</span>
 static struct mtd_blktrans_ops mtdblock_tr = {
 	.name		= &quot;mtdblock&quot;,
 	.major		= MTD_BLOCK_MAJOR,
<span class="gi">+#ifdef CONFIG_FIT_PARTITION</span>
<span class="gi">+	.part_bits	= 1,</span>
<span class="gi">+#else</span>
 	.part_bits	= 0,
<span class="gi">+#endif</span>
 	.blksize 	= 512,
 	.open		= mtdblock_open,
 	.flush		= mtdblock_flush,
<span class="gd">--- a/drivers/mtd/mtd_blkdevs.c</span>
<span class="gi">+++ b/drivers/mtd/mtd_blkdevs.c</span>
<span class="gu">@@ -407,18 +407,8 @@ int add_mtd_blktrans_dev(struct mtd_blkt</span>
 	gd-&gt;first_minor = (new-&gt;devnum) &lt;&lt; tr-&gt;part_bits;
 	gd-&gt;fops = &amp;mtd_block_ops;
 
<span class="gd">-	if (tr-&gt;part_bits)</span>
<span class="gd">-		if (new-&gt;devnum &lt; 26)</span>
<span class="gd">-			snprintf(gd-&gt;disk_name, sizeof(gd-&gt;disk_name),</span>
<span class="gd">-				 &quot;%s%c&quot;, tr-&gt;name, &#39;a&#39; + new-&gt;devnum);</span>
<span class="gd">-		else</span>
<span class="gd">-			snprintf(gd-&gt;disk_name, sizeof(gd-&gt;disk_name),</span>
<span class="gd">-				 &quot;%s%c%c&quot;, tr-&gt;name,</span>
<span class="gd">-				 &#39;a&#39; - 1 + new-&gt;devnum / 26,</span>
<span class="gd">-				 &#39;a&#39; + new-&gt;devnum % 26);</span>
<span class="gd">-	else</span>
<span class="gd">-		snprintf(gd-&gt;disk_name, sizeof(gd-&gt;disk_name),</span>
<span class="gd">-			 &quot;%s%d&quot;, tr-&gt;name, new-&gt;devnum);</span>
<span class="gi">+	snprintf(gd-&gt;disk_name, sizeof(gd-&gt;disk_name),</span>
<span class="gi">+		 &quot;%s%d&quot;, tr-&gt;name, new-&gt;devnum);</span>
 
 	set_capacity(gd, ((u64)new-&gt;size * tr-&gt;blksize) &gt;&gt; 9);
 
<span class="gd">--- a/block/partitions/msdos.c</span>
<span class="gi">+++ b/block/partitions/msdos.c</span>
<span class="gu">@@ -563,6 +563,15 @@ static void parse_minix(struct parsed_pa</span>
 #endif /* CONFIG_MINIX_SUBPARTITION */
 }
 
<span class="gi">+static void parse_fit_mbr(struct parsed_partitions *state,</span>
<span class="gi">+			  sector_t offset, sector_t size, int origin)</span>
<span class="gi">+{</span>
<span class="gi">+#ifdef CONFIG_FIT_PARTITION</span>
<span class="gi">+	u32 extra_slot = 64;</span>
<span class="gi">+	(void) parse_fit_partitions(state, offset, size, &amp;extra_slot, 1);</span>
<span class="gi">+#endif /* CONFIG_FIT_PARTITION */</span>
<span class="gi">+}</span>
<span class="gi">+</span>
 static struct {
 	unsigned char id;
 	void (*parse)(struct parsed_partitions *, sector_t, sector_t, int);
<span class="gu">@@ -574,6 +583,7 @@ static struct {</span>
 	{UNIXWARE_PARTITION, parse_unixware},
 	{SOLARIS_X86_PARTITION, parse_solaris_x86},
 	{NEW_SOLARIS_X86_PARTITION, parse_solaris_x86},
<span class="gi">+	{FIT_PARTITION, parse_fit_mbr},</span>
 	{0, NULL},
 };
 
<span class="gd">--- a/include/linux/msdos_partition.h</span>
<span class="gi">+++ b/include/linux/msdos_partition.h</span>
<span class="gu">@@ -31,6 +31,7 @@ enum msdos_sys_ind {</span>
 	LINUX_LVM_PARTITION = 0x8e,
 	LINUX_RAID_PARTITION = 0xfd,	/* autodetect RAID partition */
 
<span class="gi">+	FIT_PARTITION = 0x2e,		/* U-Boot uImage.FIT */</span>
 	SOLARIS_X86_PARTITION =	0x82,	/* also Linux swap partitions */
 	NEW_SOLARIS_X86_PARTITION = 0xbf,
 
</pre></div>
</code></pre></td></tr></table>
</div> <!-- class=content -->
<div class='footer'>generated by <a href='https://git.zx2c4.com/cgit/about/'>cgit v1.2.3</a> (<a href='https://git-scm.com/'>git 2.25.1</a>) at 2025-10-04 21:12:18 +0000</div>
</div> <!-- id=cgit -->
</body>
</html>
