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EMAC OE Boot Process Customization - Revision history
2024-03-28T10:25:18Z
Revision history for this page on the wiki
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https://wiki.emacinc.com/index.php?title=EMAC_OE_Boot_Process_Customization&diff=3563&oldid=prev
Bserrano at 21:06, 10 April 2014
2014-04-10T21:06:22Z
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">{{#seo:</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">|title=EMAC OE Boot Process Customization</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">|titlemode=append</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">|keywords=Boot Process,Busybox,System V</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">|description=This guide describes the initialization method used for EMAC OE systems and provides information on customizing the boot process.</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">}}</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>When designing an embedded system, it is often necessary to add or remove applications and tasks from the system initialization sequence. This guide describes the initialization method used for EMAC OE systems and provides information on customizing the boot process.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>When designing an embedded system, it is often necessary to add or remove applications and tasks from the system initialization sequence. This guide describes the initialization method used for EMAC OE systems and provides information on customizing the boot process.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
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Bserrano
https://wiki.emacinc.com/index.php?title=EMAC_OE_Boot_Process_Customization&diff=3405&oldid=prev
Bserrano at 21:19, 6 March 2014
2014-03-06T21:19:08Z
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<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 21:19, 6 March 2014</td>
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<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>{{todo|SEOKWTODO (10.31.13-11:02->MW+)(10.31.13-20:35->MD+)(11.06.13-12:17->JG+)(03.06.14-14:50->BS<del class="diffchange diffchange-inline">+</del>)|Michael Welling|project=oe 4,oe 5,mw,md,bs,SEOKWTODO}}</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>{{todo|SEOKWTODO (10.31.13-11:02->MW+)(10.31.13-20:35->MD+)(11.06.13-12:17->JG+)(03.06.14-14:50->BS<ins class="diffchange diffchange-inline">-</ins>)|Michael Welling|project=oe 4,oe 5,mw,md,bs,SEOKWTODO}}</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>When designing an embedded system, it is often necessary to add or remove applications and tasks from the system initialization sequence. This guide describes the initialization method used for EMAC OE systems and provides information on customizing the boot process.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>When designing an embedded system, it is often necessary to add or remove applications and tasks from the system initialization sequence. This guide describes the initialization method used for EMAC OE systems and provides information on customizing the boot process.</div></td></tr>
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Bserrano
https://wiki.emacinc.com/index.php?title=EMAC_OE_Boot_Process_Customization&diff=3388&oldid=prev
Bserrano at 20:50, 6 March 2014
2014-03-06T20:50:35Z
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<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 20:50, 6 March 2014</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>When designing an embedded system, it is often necessary to add or remove applications and tasks from the system initialization sequence. This guide describes the initialization method used for EMAC OE systems and provides information on customizing the boot process.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>When designing an embedded system, it is often necessary to add or remove applications and tasks from the system initialization sequence. This guide describes the initialization method used for EMAC OE systems and provides information on customizing the boot process.</div></td></tr>
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Bserrano
https://wiki.emacinc.com/index.php?title=EMAC_OE_Boot_Process_Customization&diff=2891&oldid=prev
Kyoungmeyer: /* Advanced Initialization */
2014-01-02T18:52:58Z
<p><span dir="auto"><span class="autocomment">Advanced Initialization</span></span></p>
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<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 18:52, 2 January 2014</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Linux]]</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline"><!--</ins>[[Category:Linux]]</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[Category:OpenEmbedded]]</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[Category:OpenEmbedded]]<ins class="diffchange diffchange-inline">--></ins></div></td></tr>
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Kyoungmeyer
https://wiki.emacinc.com/index.php?title=EMAC_OE_Boot_Process_Customization&diff=994&oldid=prev
Jgreene at 18:18, 6 November 2013
2013-11-06T18:18:15Z
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<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 18:18, 6 November 2013</td>
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<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>{{todo|<del class="diffchange diffchange-inline">Review Changes </del>(10.31.13-11:02->MW+)<del class="diffchange diffchange-inline">; </del>(10.31.13-20:35->MD+)|Michael Welling|project=oe 4,oe 5,mw,md,<del class="diffchange diffchange-inline">FinalDraft</del>}}</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>{{todo|<ins class="diffchange diffchange-inline">Complete </ins>(10.31.13-11:02->MW+)(10.31.13-20:35->MD<ins class="diffchange diffchange-inline">+)(11.06.13-12:17->JG</ins>+)|Michael Welling|project=oe 4,oe 5,mw,md,<ins class="diffchange diffchange-inline">Complete</ins>}}</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>When designing an embedded system, it is often necessary to add or remove applications and tasks from the system initialization sequence. This guide describes the initialization method used for EMAC OE systems and provides information on customizing the boot process.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>When designing an embedded system, it is often necessary to add or remove applications and tasks from the system initialization sequence. This guide describes the initialization method used for EMAC OE systems and provides information on customizing the boot process.</div></td></tr>
</table>
Jgreene
https://wiki.emacinc.com/index.php?title=EMAC_OE_Boot_Process_Customization&diff=993&oldid=prev
Jgreene: /* Custom Initialization */
2013-11-06T18:08:28Z
<p><span dir="auto"><span class="autocomment">Custom Initialization</span></span></p>
<table class="diff diff-contentalign-left" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 18:08, 6 November 2013</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l240" >Line 240:</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Custom Initialization ==</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Custom Initialization ==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>In some designs, the target application is so specific that only one main task will be performed. After a custom application has been developed and tested, it may be possible to simplify the boot process significantly by modifying the System V Init configuration. The end result is generally a <del class="diffchange diffchange-inline">must </del>faster boot time. It is also possible to override <code>init</code> completely by changing the kernel boot argument value for <code>init</code>, but this method offers little benefit over the customized configuration described in this document.</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>In some designs, the target application is so specific that only one main task will be performed. After a custom application has been developed and tested, it may be possible to simplify the boot process significantly by modifying the System V Init configuration. The end result is generally a <ins class="diffchange diffchange-inline">much </ins>faster boot time. It is also possible to override <code>init</code> completely by changing the kernel boot argument value for <code>init</code>, but this method offers little benefit over the customized configuration described in this document.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>A complete customization of the <code>inittab</code> file involves overriding the <code>/etc/init.d/rc</code> and <code>/etc/init.d/rcS</code> scripts altogether. A single script is specified for init to run during boot that performs the entire system initialization. The example <code>/etc/inittab</code> below will start the script <code>/etc/init.d/custom</code> and also start a serial console for login.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>A complete customization of the <code>inittab</code> file involves overriding the <code>/etc/init.d/rc</code> and <code>/etc/init.d/rcS</code> scripts altogether. A single script is specified for init to run during boot that performs the entire system initialization. The example <code>/etc/inittab</code> below will start the script <code>/etc/init.d/custom</code> and also start a serial console for login.</div></td></tr>
</table>
Jgreene
https://wiki.emacinc.com/index.php?title=EMAC_OE_Boot_Process_Customization&diff=992&oldid=prev
Jgreene: /* Summary */
2013-11-06T18:06:13Z
<p><span dir="auto"><span class="autocomment">Summary</span></span></p>
<table class="diff diff-contentalign-left" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="en">
<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 18:06, 6 November 2013</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l233" >Line 233:</td>
<td colspan="2" class="diff-lineno">Line 233:</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>=== Summary ===</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>=== Summary ===</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>System V Initialization is used on EMAC OE filesystems and can be easily modified to alter the boot process. Configuring the <code>/etc/inittab</code> file allows users to define the initscripts run at various runlevels. The system init and runlevels are associated with directories containing symbolic links to scripts in <code>/etc/init.d</code>. The <del class="diffchange diffchange-inline">name </del>of the links determine the action and order in which the scripts are run. Users can write simple initscripts and store them in <code>/etc/init.d/</code> to launch custom applications. These scripts can be linked to in various runlevels in order to start and stop the applications according to the requirements of the application.</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>System V Initialization is used on EMAC OE filesystems and can be easily modified to alter the boot process. Configuring the <code>/etc/inittab</code> file allows users to define the initscripts run at various runlevels. The system init and runlevels are associated with directories containing symbolic links to scripts in <code>/etc/init.d</code>. The <ins class="diffchange diffchange-inline">names </ins>of the links determine the action and order in which the scripts are run. Users can write simple initscripts and store them in <code>/etc/init.d/</code> to launch custom applications. These scripts can be linked to in various runlevels in order to start and stop the applications according to the requirements of the application.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>For more information:<br /></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>For more information:<br /></div></td></tr>
</table>
Jgreene
https://wiki.emacinc.com/index.php?title=EMAC_OE_Boot_Process_Customization&diff=991&oldid=prev
Jgreene: /* Adding and Removing Scripts */
2013-11-06T18:00:03Z
<p><span dir="auto"><span class="autocomment">Adding and Removing Scripts</span></span></p>
<table class="diff diff-contentalign-left" data-mw="interface">
<col class="diff-marker" />
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<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="en">
<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 18:00, 6 November 2013</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l155" >Line 155:</td>
<td colspan="2" class="diff-lineno">Line 155:</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>=== Adding and Removing Scripts ===</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>=== Adding and Removing Scripts ===</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>A new or existing initscript can be added or removed from the start process by simply creating or destroying the symbolic links from the <code>/etc/rc*.d/</code> directories. A utility application, <code>update-rc.d</code> is provided to automate this process. The usage of <code>update-rc.d</code> is shown below:</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>A new or existing initscript can be added or removed from the start process by simply creating or destroying the symbolic links from the <code>/etc/rc*.d/</code> directories. A utility application, <code>update-rc.d</code> <ins class="diffchange diffchange-inline">, </ins>is provided to automate this process. The usage of <code>update-rc.d</code> is shown below:</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><syntaxhighlight lang="text"></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><syntaxhighlight lang="text"></div></td></tr>
</table>
Jgreene
https://wiki.emacinc.com/index.php?title=EMAC_OE_Boot_Process_Customization&diff=953&oldid=prev
Mdean: Approved for Final Draft
2013-11-01T01:35:14Z
<p>Approved for Final Draft</p>
<table class="diff diff-contentalign-left" data-mw="interface">
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<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="en">
<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 01:35, 1 November 2013</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>
<td colspan="2" class="diff-lineno">Line 1:</td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>{{todo|Review Changes (10.31.13-11:02->MW+)|Michael Welling|project=oe 4,oe 5,mw,md,<del class="diffchange diffchange-inline">review</del>}}</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>{{todo|Review Changes (10.31.13-11:02->MW<ins class="diffchange diffchange-inline">+); (10.31.13-20:35->MD</ins>+)|Michael Welling|project=oe 4,oe 5,mw,md,<ins class="diffchange diffchange-inline">FinalDraft</ins>}}</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>When designing an embedded system, it is often necessary to add or remove applications and tasks from the system initialization sequence. This guide describes the initialization method used for EMAC OE systems and provides information on customizing the boot process.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>When designing an embedded system, it is often necessary to add or remove applications and tasks from the system initialization sequence. This guide describes the initialization method used for EMAC OE systems and provides information on customizing the boot process.</div></td></tr>
</table>
Mdean
https://wiki.emacinc.com/index.php?title=EMAC_OE_Boot_Process_Customization&diff=952&oldid=prev
Mdean: /* Custom Initialization */ Fixed error.
2013-11-01T01:33:43Z
<p><span dir="auto"><span class="autocomment">Custom Initialization: </span> Fixed error.</span></p>
<table class="diff diff-contentalign-left" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="en">
<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 01:33, 1 November 2013</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l242" >Line 242:</td>
<td colspan="2" class="diff-lineno">Line 242:</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>In some designs, the target application is so specific that only one main task will be performed. After a custom application has been developed and tested, it may be possible to simplify the boot process significantly by modifying the System V Init configuration. The end result is generally a must faster boot time. It is also possible to override <code>init</code> completely by changing the kernel boot argument value for <code>init</code>, but this method offers little benefit over the customized configuration described in this document.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>In some designs, the target application is so specific that only one main task will be performed. After a custom application has been developed and tested, it may be possible to simplify the boot process significantly by modifying the System V Init configuration. The end result is generally a must faster boot time. It is also possible to override <code>init</code> completely by changing the kernel boot argument value for <code>init</code>, but this method offers little benefit over the customized configuration described in this document.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>A complete customization of the <code>inittab</code> file involves overriding the <code>/etc/init.d/<del class="diffchange diffchange-inline">rcS</del></code> and <code>/etc/init.d/rcS</code> scripts altogether. A single script is specified for init to run during boot that performs the entire system initialization. The example <code>/etc/inittab</code> below will start the script <code>/etc/init.d/custom</code> and also start a serial console for login.</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>A complete customization of the <code>inittab</code> file involves overriding the <code>/etc/init.d/<ins class="diffchange diffchange-inline">rc</ins></code> and <code>/etc/init.d/rcS</code> scripts altogether. A single script is specified for init to run during boot that performs the entire system initialization. The example <code>/etc/inittab</code> below will start the script <code>/etc/init.d/custom</code> and also start a serial console for login.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><syntaxhighlight lang="text"></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><syntaxhighlight lang="text"></div></td></tr>
</table>
Mdean