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<!-- Copyright (C) 2003 Red Hat, Inc. --> <!-- This material may be distributed only subject to the terms --> <!-- and conditions set forth in the Open Publication License, v1.0 --> <!-- or later (the latest version is presently available at --> <!-- http://www.opencontent.org/openpub/). --> <!-- Distribution of the work or derivative of the work in any --> <!-- standard (paper) book form is prohibited unless prior --> <!-- permission is obtained from the copyright holder. --> <HTML ><HEAD ><TITLE >Coarse-grained Configuration</TITLE ><meta name="MSSmartTagsPreventParsing" content="TRUE"> <META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="eCos User Guide" HREF="ecos-user-guide.html"><LINK REL="UP" TITLE="Manual Configuration" HREF="manual-configuration.html"><LINK REL="PREVIOUS" TITLE="Packages" HREF="ecos-packages.html"><LINK REL="NEXT" TITLE="Fine-grained Configuration" HREF="fine-grained-configuration.html"></HEAD ><BODY CLASS="SECT1" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >eCos User Guide</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="ecos-packages.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 28. Manual Configuration</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="fine-grained-configuration.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="COARSE-GRAINED-CONFIGURATION">Coarse-grained Configuration</H1 ><P >Coarse-grained configuration of an <SPAN CLASS="PRODUCTNAME" >eCos</SPAN > system means making configuration changes using the <B CLASS="COMMAND" >ecosconfig</B > tool. These changes include: </P ><P ></P ><OL TYPE="1" ><LI ><P >switching to different target hardware</P ></LI ><LI ><P >switching to a different template</P ></LI ><LI ><P >adding or removing a package</P ></LI ><LI ><P >changing the version of a package</P ></LI ></OL ><P >Whenever <B CLASS="COMMAND" >ecosconfig</B > generates or updates an <SPAN CLASS="PRODUCTNAME" >eCos</SPAN > configuration, it generates a configuration save file.</P ><P >Suppose that the configuration was first created using the following command line: </P ><TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="SCREEN" >$ ecosconfig new stdeval1</PRE ></TD ></TR ></TABLE ><P >To change the target hardware to the Cogent CMA28x PowerPC board, the following command would be needed: </P ><TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="SCREEN" >$ ecosconfig target cma28x</PRE ></TD ></TR ></TABLE ><P >To switch to the PowerPC simulator instead: </P ><TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="SCREEN" >$ ecosconfig target psim</PRE ></TD ></TR ></TABLE ><P >As the hardware changes, hardware-related packages such as the HAL packages and device drivers will be added to and removed from the configuration as appropriate. </P ><P >To remove any package from the current configuration, use the <B CLASS="COMMAND" >remove</B > command: </P ><TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="SCREEN" >$ ecosconfig remove uitron</PRE ></TD ></TR ></TABLE ><P >You can disable multiple packages using multiple arguments, for example: </P ><TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="SCREEN" >$ ecosconfig remove uitron libm</PRE ></TD ></TR ></TABLE ><P >If this turns out to have been a mistake then you can re-enable one or more packages with the <B CLASS="COMMAND" >add</B > command: </P ><TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="SCREEN" >$ ecosconfig add libm</PRE ></TD ></TR ></TABLE ><P >Changing the desired version for a package is also straightforward:</P ><TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="SCREEN" >$ ecosconfig version v2_1 kernel</PRE ></TD ></TR ></TABLE ><P >It is necessary to regenerate the build tree and header files following any changes to the configuration before rebuilding <SPAN CLASS="PRODUCTNAME" >eCos</SPAN >:</P ><TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="SCREEN" >$ ecosconfig tree</PRE ></TD ></TR ></TABLE ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="ecos-packages.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ecos-user-guide.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="fine-grained-configuration.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Packages</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="manual-configuration.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Fine-grained Configuration</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
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