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<h2>
<a name="1204710"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">cachecontrol</font>
</h2><hr>
<p>
<a name="1266607"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Control instruction and data caches</font>
</p>
<h3>
<a name="1204712"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Command type</font>
</h3>
<p>
<a name="1226851"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Execution</font>
</p>
<h3>
<a name="1204714"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Tool environment</font>
</h3>
<p>
<a name="1227941"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><strong>st20run</strong></font>
</p>
<h3>
<a name="1204715"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Synopsis</font>
</h3>
<a name="1204716"> </a><font size=2 face=Courier><strong>cachecontrol [<font size=2 face=Courier><strong><em>option</em></strong></font>]<br></strong></font>
<h3>
<a name="1204717"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Options</font>
</h3>
<p>
<a name="1232164"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><b><font size=2 face=Courier><strong>-ddisable</strong></font></b></font>
<br>
<dl><dl> <dl>
<dt> <a name="1232166"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Disable data cache</font>
</dl>
</dl></dl>
<p>
<a name="1232168"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><b><font size=2 face=Courier><strong>-denable</strong></font></b></font>
<br>
<dl><dl> <dl>
<dt> <a name="1232170"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Enable data cache</font>
</dl>
</dl></dl>
<p>
<a name="1232172"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><b><font size=2 face=Courier><strong>-dflush</strong></font></b></font>
<br>
<dl><dl> <dl>
<dt> <a name="1232174"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Flush data cache</font>
</dl>
</dl></dl>
<p>
<a name="1232176"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><b><font size=2 face=Courier><strong>-dinvalidate</strong></font></b></font>
<br>
<dl><dl> <dl>
<dt> <a name="1232178"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Invalidate data cache</font>
</dl>
</dl></dl>
<p>
<a name="1232187"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><b><font size=2 face=Courier><strong>-idisable</strong></font></b></font>
<br>
<dl><dl> <dl>
<dt> <a name="1232189"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Disable the instruction cache</font>
</dl>
</dl></dl>
<p>
<a name="1232191"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><b><font size=2 face=Courier><strong>-ienable</strong></font></b></font>
<br>
<dl><dl> <dl>
<dt> <a name="1232193"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Enable the instruction cache</font>
</dl>
</dl></dl>
<p>
<a name="1232195"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><b><font size=2 face=Courier><strong>-iinvalidate</strong></font></b></font>
<br>
<dl><dl> <dl>
<dt> <a name="1232197"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Invalidate the instruction cache</font>
</dl>
</dl></dl>
<p>
<a name="1232199"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><b><font size=2 face=Courier><strong>-lock</strong></font> </b></font>
<br>
<dl><dl> <dl>
<dt> <a name="1232201"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Lock the cache configuration registers</font>
</dl>
</dl></dl>
<h3>
<a name="1204727"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Description</font>
</h3>
<p>
<a name="1204728"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The behavior of <font size=2 face=Courier><strong>cachecontrol</strong></font> is dependent on the target chip being used.</font>
</p>
<p>
<a name="1204729"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The command <font size=2 face=Courier><strong>cachecontrol</strong></font> controls the instruction and data caches. Only one option may be specified in each occurrence of the command.</font>
</p>
<p>
<a name="1204730"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Options are provided to enable, disable or invalidate either the data or the instruction cache or both. Invalidating marks every line as not containing valid data. The data cache can also be flushed, in this case every dirty line is forced to write back to memory. The cache configuration can also be locked; it can only be unlocked by a hardware reset.</font>
</p>
<p>
<a name="1204731"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">If an option selected is not appropriate for the current target then that option has no effect.</font>
</p>
<h3>
<a name="1204732"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">See also</font>
</h3>
<p>
<a name="1204736"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><a href="comman12.htm#1204763"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>chip</i></font></a></font>
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