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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><html><head><link rel="STYLESHEET" type="text/css" href="wrs.css"><title> Booting over the Network </title></head><body bgcolor="FFFFFF"><p class="navbar" align="right"><a href="index.html"><img border="0" alt="[Contents]" src="icons/contents.gif"></a><a href="c-booting.html"><img border="0" alt="[Index]" src="icons/index.gif"></a><a href="c-booting.html"><img border="0" alt="[Top]" src="icons/top.gif"></a><a href="c-booting.html"><img border="0" alt="[Prev]" src="icons/prev.gif"></a><a href="c-booting2.html"><img border="0" alt="[Next]" src="icons/next.gif"></a></p><font face="Helvetica, sans-serif" class="sans"><h3 class="H2"><i><a name="84223">13.1 Introduction</a></i></h3></font><dl class="margin"><dl class="margin"><dd><p class="Body"><a name="84225"> </a>To boot VxWorks over the network, a VxWorks target needs to know certain configuration parameters that describe itself, the network, and its relationship to the network. The goals of the boot program are as follows:</p></dl><dl class="margin"><p><ol class="List"><li value="1."><a name="84226"> </a>Gather configuration information (such as networking parameters). </li></ol></p><p><ol class="List"><li value="2."><a name="84234"> </a>Format the configuration information as an ASCII string, a boot line. </li></ol></p><p><ol class="List"><li value="3."><a name="84240"> </a>Store the boot line in a known memory location.</li></ol></p><p><ol class="List"><li value="4."><a name="84241"> </a>Retrieve and load a run-time VxWorks image.</li></ol></p><p><ol class="List"><li value="5."><a name="84242"> </a>Pass control to the run-time VxWorks image. </li></ol></p></dl><dl class="margin"><dd><p class="Body"><a name="84243"> </a>When the run-time VxWorks image needs the configuration information gathered by the boot program, it reads the boot line that the boot program stored at the known memory location. </p><dd><p class="Body"><a name="84248"> </a>The following sections describe the boot parameters and how to set them. This section also discusses the protocols, network utilities, and network devices available to the boot program. These various media, protocols, and utilities combine to produce a great variety of different boot systems (Ethernet with DHCP with TFTP, serial line with BOOTP with RSH, shared memory backplane with BOOTP with FTP, and so on.) This section describes booting using three representative systems, one example for each physical medium. </p></dl></dl><a name="foot"><hr></a><p class="navbar" align="right"><a href="index.html"><img border="0" alt="[Contents]" src="icons/contents.gif"></a><a href="c-booting.html"><img border="0" alt="[Index]" src="icons/index.gif"></a><a href="c-booting.html"><img border="0" alt="[Top]" src="icons/top.gif"></a><a href="c-booting.html"><img border="0" alt="[Prev]" src="icons/prev.gif"></a><a href="c-booting2.html"><img border="0" alt="[Next]" src="icons/next.gif"></a></p></body></html><!---by WRS Documentation (), Wind River Systems, Inc. conversion tool: Quadralay WebWorks Publisher 4.0.11 template: CSS Template, Jan 1998 - Jefro --->?? 快捷鍵說明
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