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Developping U-Boot standalone programs - Revision history
2026-05-03T15:20:17Z
Revision history for this page on the wiki
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http://www.armadeus.org/wiki/index.php?title=Developping_U-Boot_standalone_programs&diff=13987&oldid=prev
JulienB: /* Developping your own app */
2016-05-30T10:49:02Z
<p><span dir="auto"><span class="autocomment">Developping your own app</span></span></p>
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<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 10:49, 30 May 2016</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Developping your own app==</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Developping your own app==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; 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>* At first sight all this might be considered as <del class="diffchange diffchange-inline">baremetal </del>development, but you will see that you are still closely linked to U-Boot and may even access to some (most ?!) of its useful API.</div></td><td class='diff-marker'>+</td><td style="color:black; 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>* At first sight<ins class="diffchange diffchange-inline">, </ins>all this might be considered as <ins class="diffchange diffchange-inline">[[APF6 Bare-metal programming|bare-metal </ins>development<ins class="diffchange diffchange-inline">]]</ins>, but you will see that you are still closely linked to U-Boot and may even access to some (most ?!) of its useful API.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* For the moment we can only advise you to hack ''examples/standalone/hello_world.c'' in U-Boot sources...</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* For the moment we can only advise you to hack ''examples/standalone/hello_world.c'' in U-Boot sources...</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* More to come soon...</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* More to come soon...</div></td></tr>
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JulienB
http://www.armadeus.org/wiki/index.php?title=Developping_U-Boot_standalone_programs&diff=13984&oldid=prev
JulienB: /* Links */
2016-05-30T10:45:58Z
<p><span dir="auto"><span class="autocomment">Links</span></span></p>
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<td colspan='2' style="background-color: white; color:black; text-align: center;">← Older revision</td>
<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 10:45, 30 May 2016</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l34" >Line 34:</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Category:U-Boot]]</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Category:U-Boot]]</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; 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;">[[Category:Bare-metal]]</ins></div></td></tr>
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JulienB
http://www.armadeus.org/wiki/index.php?title=Developping_U-Boot_standalone_programs&diff=13971&oldid=prev
JulienB: /* Developping your own app */
2016-05-25T14:50:40Z
<p><span dir="auto"><span class="autocomment">Developping your own app</span></span></p>
<table class='diff diff-contentalign-left'>
<col class='diff-marker' />
<col class='diff-content' />
<col class='diff-marker' />
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<td colspan='2' style="background-color: white; color:black; text-align: center;">← Older revision</td>
<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 14:50, 25 May 2016</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l23" >Line 23:</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* For the moment we can only advise you to hack ''examples/standalone/hello_world.c'' in U-Boot sources...</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* For the moment we can only advise you to hack ''examples/standalone/hello_world.c'' in U-Boot sources...</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* More to come soon...</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* More to come soon...</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; 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 colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; 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;">==Tips==</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; 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;">* Showing assembler code of your app:</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; 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;"><pre class="host"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; 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;">$ /xxx/buildroot/output/host/usr/bin/arm-linux-gnueabihf-objdump -d examples/standalone/hello_world</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; 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;"></pre></ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Links==</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Links==</div></td></tr>
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JulienB
http://www.armadeus.org/wiki/index.php?title=Developping_U-Boot_standalone_programs&diff=13970&oldid=prev
JulienB: creation
2016-05-24T15:33:44Z
<p>creation</p>
<p><b>New page</b></p><div>==Introduction==<br />
Fed up with Linux tons of useful librairies, memory protection to avoid programs to crash your system and facilities to launch multiple executables at the same time ?<br />
Then U-Boot offers you the possibility to develop and run "standalone" applications inside U-Boot. Here you will learn how to get back hands on the possibility to crash your APF with your own software ;-).<br />
<br />
==Installation/Launching==<br />
* An example is compiled with U-Boot and you will find it in U-Boot sources at ''examples/standalone/hello_world.bin''. Copy it to your ''/tftpboot/'' directory:<br />
<pre class="host"><br />
$ . armadeus_env.sh<br />
$ cp $ARMADEUS_UBOOT_DIR/examples/standalone/hello_world.bin /tftpboot/<br />
</pre><br />
* In U-Boot, load the binary through TFTP:<br />
<pre class="apf"><br />
BIOS> tftp ${loadaddr} hello_world.bin<br />
</pre><br />
* All Armadeus board's U-Boot are configured to generate standalone apps relocable to ${loadaddr}, thanks to CONFIG_STANDALONE_LOAD_ADDR config option. So don't load your program anywhere else unless you changed this option !!<br />
* Then launch your program (here example is given on APF6 where loadaddr is 0x01200000. Explanation why loadaddr+0x1 is used as jump address is given [https://lists.rocketboards.org/pipermail/rfi/2015-April/003013.html|here]):<br />
<pre class="apf"><br />
BIOS> go 0x01200001 (on APF6 only !!)<br />
</pre><br />
<br />
==Developping your own app==<br />
* At first sight all this might be considered as baremetal development, but you will see that you are still closely linked to U-Boot and may even access to some (most ?!) of its useful API.<br />
* For the moment we can only advise you to hack ''examples/standalone/hello_world.c'' in U-Boot sources...<br />
* More to come soon...<br />
<br />
==Links==<br />
* http://www.denx.de/wiki/view/DULG/UBootStandalone<br />
<br />
[[Category:U-Boot]]</div>
JulienB