http://elinux.org/index.php?title=Blackfin&feed=atom&action=history 2013-05-23T20:15:32Z Revision history for this page on the wiki MediaWiki 1.21alpha http://elinux.org/index.php?title=Blackfin&diff=117344&oldid=prev 2012-04-17T10:48:34Z

<p>‎<span dir="auto"><span class="autocomment">Further reading</span></span></p> <table class='diff diff-contentalign-left'> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr style='vertical-align: top;'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 10:48, 17 April 2012</td> </tr><tr><td colspan="2" class="diff-lineno">Line 17:</td> <td colspan="2" class="diff-lineno">Line 17:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* the [http://blackfin.uclinux.org/ Blackfin Open Source Koop]</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* the [http://blackfin.uclinux.org/ Blackfin Open Source Koop]</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>[[Category:Processors<del class="diffchange diffchange-inline">:</del>dsp]]</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>[[Category:Processors <ins class="diffchange diffchange-inline">| </ins>dsp]]</div></td></tr> <!-- diff cache key elinux:diff:version:1.11a:oldid:117338:newid:117344 --> </table>

Legacy http://elinux.org/index.php?title=Blackfin&diff=117338&oldid=prev 2012-04-17T10:48:19Z

<p>‎<span dir="auto"><span class="autocomment">Further reading</span></span></p> <table class='diff diff-contentalign-left'> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr style='vertical-align: top;'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 10:48, 17 April 2012</td> </tr><tr><td colspan="2" class="diff-lineno">Line 17:</td> <td colspan="2" class="diff-lineno">Line 17:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* the [http://blackfin.uclinux.org/ Blackfin Open Source Koop]</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* the [http://blackfin.uclinux.org/ Blackfin Open Source Koop]</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>[[Category:Processors dsp]]</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>[[Category:Processors<ins class="diffchange diffchange-inline">:</ins>dsp]]</div></td></tr> </table>

Legacy http://elinux.org/index.php?title=Blackfin&diff=117332&oldid=prev 2012-04-17T10:48:02Z

<p>‎<span dir="auto"><span class="autocomment">Further reading</span></span></p> <table class='diff diff-contentalign-left'> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr style='vertical-align: top;'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 10:48, 17 April 2012</td> </tr><tr><td colspan="2" class="diff-lineno">Line 17:</td> <td colspan="2" class="diff-lineno">Line 17:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* the [http://blackfin.uclinux.org/ Blackfin Open Source Koop]</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* the [http://blackfin.uclinux.org/ Blackfin Open Source Koop]</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>[[Category:Processors<del class="diffchange diffchange-inline">|</del>dsp]]</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>[[Category:Processors dsp]]</div></td></tr> <!-- diff cache key elinux:diff:version:1.11a:oldid:117326:newid:117332 --> </table>

Legacy http://elinux.org/index.php?title=Blackfin&diff=117326&oldid=prev 2012-04-17T10:47:49Z

<p>‎<span dir="auto"><span class="autocomment">Further reading</span></span></p> <table class='diff diff-contentalign-left'> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr style='vertical-align: top;'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 10:47, 17 April 2012</td> </tr><tr><td colspan="2" class="diff-lineno">Line 17:</td> <td colspan="2" class="diff-lineno">Line 17:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* the [http://blackfin.uclinux.org/ Blackfin Open Source Koop]</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* the [http://blackfin.uclinux.org/ Blackfin Open Source Koop]</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>[[Category:Processors]]</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>[[Category:Processors<ins class="diffchange diffchange-inline">|dsp</ins>]]</div></td></tr> </table>

Legacy http://elinux.org/index.php?title=Blackfin&diff=11641&oldid=prev 2009-05-13T00:48:57Z

<p>Add to category:processors</p> <table class='diff diff-contentalign-left'> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr style='vertical-align: top;'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 00:48, 13 May 2009</td> </tr><tr><td colspan="2" class="diff-lineno">Line 16:</td> <td colspan="2" class="diff-lineno">Line 16:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* the [http://docs.blackfin.uclinux.org/ Blackfin Linux wiki]</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* the [http://docs.blackfin.uclinux.org/ Blackfin Linux wiki]</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* the [http://blackfin.uclinux.org/ Blackfin Open Source Koop]</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* the [http://blackfin.uclinux.org/ Blackfin Open Source Koop]</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">[[Category:Processors]]</ins></div></td></tr> <!-- diff cache key elinux:diff:version:1.11a:oldid:10736:newid:11641 --> </table>

Tim Bird http://elinux.org/index.php?title=Blackfin&diff=10736&oldid=prev 2009-04-12T08:23:05Z

<p>fill out &quot;MMU&quot; description with real information</p> <table class='diff diff-contentalign-left'> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr style='vertical-align: top;'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 08:23, 12 April 2009</td> </tr><tr><td colspan="2" class="diff-lineno">Line 6:</td> <td colspan="2" class="diff-lineno">Line 6:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>Blackfin processors are fast enough to support real-time H.264 video encoding.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>Blackfin processors are fast enough to support real-time H.264 video encoding.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>The <del class="diffchange diffchange-inline">&quot;MMU&quot; on </del>Blackfin <del class="diffchange diffchange-inline">processors supports memory protection for &quot;user&quot; programs</del>,</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>The Blackfin <ins class="diffchange diffchange-inline">processor documentation describes a Memory Management Unit (MMU)</ins>, <ins class="diffchange diffchange-inline">but this </ins>is <ins class="diffchange diffchange-inline">not a MMU in the sense that most people expect: </ins>it <ins class="diffchange diffchange-inline">has no Virtual Memory (VM) support.&#160; It does however provide all other aspects associated with your typical MMU on a variable page sized basis such as Memory Protection (read/write/execute) and caching.&#160; The documentation refers to these mappings as </ins>the <ins class="diffchange diffchange-inline">Cacheability Protection Lookaside Buffer (CPLD) tables and are similar </ins>to <ins class="diffchange diffchange-inline">TLBs in </ins>most other <ins class="diffchange diffchange-inline">processor architectures</ins>.</div></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">and </del>is <del class="diffchange diffchange-inline">more than adequate for running [[uCLinux]].</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">But </del>it <del class="diffchange diffchange-inline">apparently doesn't have </del>the <del class="diffchange diffchange-inline">&quot;memory mapping&quot; feature required </del>to <del class="diffchange diffchange-inline">run </del>most other <del class="diffchange diffchange-inline">[[Embedded Linux Distributions]]</del>.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">As such, all current Blackfin parts can only run Linux with MMU support turned off (what people have historically thought of as &quot;uClinux&quot;).</ins></div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">The processors also fully enforces privileged execution -- the classical user / supervisor permission split.&#160; The Linux kernel runs in supervisor mode where it has full access to the hardware while the Linux userspace runs in user mode and prevents tampering with hardware resources.</ins></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>== Further reading ==</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>== Further reading ==</div></td></tr> <!-- diff cache key elinux:diff:version:1.11a:oldid:10414:newid:10736 --> </table>

Vapier http://elinux.org/index.php?title=Blackfin&diff=10414&oldid=prev 2009-03-28T23:07:09Z

<p>rough draft</p> <p><b>New page</b></p><div>The Blackfin processor was designed by and is manufactured by Analog Devices ([[Board and Chip Vendors#A]]).<br /> Several boards that include a Blackfin processor are available ([[Hardware Hacking#Blackfin]]).<br /> <br /> All Blackfin processors include Debug/[[JTAG]] Interface for in-system debugging.<br /> <br /> Blackfin processors are fast enough to support real-time H.264 video encoding.<br /> <br /> The &quot;MMU&quot; on Blackfin processors supports memory protection for &quot;user&quot; programs,<br /> and is more than adequate for running [[uCLinux]].<br /> But it apparently doesn't have the &quot;memory mapping&quot; feature required to run most other [[Embedded Linux Distributions]].<br /> <br /> <br /> == Further reading ==<br /> <br /> * the [http://docs.blackfin.uclinux.org/ Blackfin Linux wiki]<br /> * the [http://blackfin.uclinux.org/ Blackfin Open Source Koop]</div>

DavidCary