</blockquote>       <p style="line-height: 150%"><strong><big>romInit.s</big></strong></p>       <blockquote>         <p style="line-height: 150%">匯編語言文件,是VxWorks Boot ROM和ROM based image的入口,參見           <a href="http://drew.nease.net/mypage/sourcecode.htm#INIT" target="_blank">系統啟動部分</a></p>        </blockquote>        <p style="line-height: 150%"><strong><big>sysALib.s</big></strong></p>        <blockquote>          <p style="line-height: 150%">匯編語言文件,程序員可以把自己的匯編函數放在這個文件里,在上層調用.VxWorks             image的入口點_sysInit在這個文件里,是在RAM中執行的第一個函數.</p>         </blockquote>         <p style="line-height: 150%"><strong><big>sysLib.c</big></strong></p>         <blockquote>           <p style="line-height: 150%"><big>包含一些系統相關的函數例程,提供了一個board-level的接口,VxWorks和應用程序可以以system-indepent的方式生成.這個文件還能包含目錄target/config/comps/src的驅動.</big></p>         </blockquote>         <p style="line-height: 150%"><strong><big>sysScsi.c</big></strong></p>         <blockquote>           <p style="line-height: 150%">可選文件用于Scsi設備設置和初始化.</p>         </blockquote>         <p style="line-height: 150%"><strong><big>sysSerial.c</big></strong></p>         <blockquote>           <p style="line-height: 150%">可選文件用于所有的串口設置和初始化.</p>         </blockquote>         <p style="line-height: 150%"><strong><big>bootrom.hex</big></strong></p>         <blockquote>           <p style="line-height: 150%"><big>ASIC文件包含VxWorks Boot ROM代碼</big></p>          </blockquote>         <p style="line-height: 150%"><strong><big>VxWorks</big></strong></p>         <blockquote>           <p style="line-height: 150%">運行在目標機上,完整的,連結后的VxWorks二進制文件.</p>         </blockquote>         <p style="line-height: 150%"><strong><big>VxWorks.sym</big></strong></p>         <blockquote>           <p style="line-height: 150%">完全的,連結后帶有符號表的VxWorks二進制文件</p>         </blockquote>         <p style="line-height: 150%"><strong><big>VxWorks.st</big></strong></p>         <blockquote>           <p style="line-height: 150%">完全的,連結后,standalone,帶有符號表的VxWorks二進制文件</p>           <p style="line-height: 150%">　</p>         </blockquote>       </blockquote>     </blockquote>     <ul>       <li>       <p style="line-height: 150%"><font face="宋體" lang="ZH-CN" size="3"><strong>BSP用&quot;make&quot;來編譯連接生成(Created),而不是用Tornado的工具.</strong></font></li>      <li>      <p style="line-height: 150%"><font face="宋體" lang="ZH-CN" size="3"><strong>BSP和應用程序都可以在&quot;make&quot;或&quot;tornade&quot;上開發(developed)</strong></font></li>    </ul>    <ul>      <li>      <p style="line-height: 150%"><font face="宋體" lang="ZH-CN" size="3"><strong>BSP被設置包括以下驅動:</strong></font></li>    </ul>    <blockquote>      <blockquote>        <p style="line-height: 150%"><font face="宋體" lang="ZH-CN" size="3">中斷控制interrupt controller,計時器timer(sys/aux),串口UART(serial),顯示屏LCD,鍵盤Keyboard(opt),觸摸屏touch-screen(opt).</font></p>          <p style="line-height: 150%"><font face="宋體" lang="ZH-CN" size="3">前面三個是BSP的主要部分. </font></p>       </blockquote>     </blockquote>     <ul>       <li>       <p style="line-height: 150%"><font face="宋體" lang="ZH-CN" size="3"><strong>BSP默認的download VxWorks RAM image方式是從ethernet.</strong></font></li>      </ul>     <ul>       <li>       <p style="line-height: 150%"><font face="宋體" lang="ZH-CN" size="3"><strong>串口電纜需要用來和開發板(COM1)通信,通過協議WDB.</strong></font></li>    </ul>  </blockquote>    <p style="line-height: 150%"><font face="宋體" lang="ZH-CN" size="4"><strong>&nbsp;&nbsp;&nbsp; VxWorks Image的種類:</strong></font></p>       <blockquote>     <blockquote>       <blockquote>         <ul>           <li>           <p style="line-height: 150%"><font face="宋體" lang="ZH-CN" size="5"><small><small>Loadable images.</small></small></font></li>          <li>          <p style="line-height: 150%"><font face="System" lang="ZH-CN">ROM</font><font face="宋體" lang="ZH-CN">-based             images---compressed/uncompressed.</font></li>          <li>          <p style="line-height: 150%"><font face="System" lang="ZH-CN">ROM</font><font lang="ZH-CN"><strong>-</strong>Resident              images.</font></li>        </ul>        <blockquote>          <p style="line-height: 150%"><b>ROM-resident</b> image 對一些系統內存RAM資源較少的情況下，為了節省資源，只拷貝image中的數據部分(data segment)到內存RAM,留下程序部分(text segment)在ROM中執行。這樣空出更多的RAM空間給應用程序。<br>           并不是所用得板子都支持這種VxWorks image.       </blockquote>    </blockquote>    </blockquote>  </blockquote>    <blockquote>    <ul>      <li>      <p style="line-height: 150%"><font lang="ZH-CN" face="宋體" size="4"><strong>VxWorks boot images---</strong>A         VxWorks image designed to load another VxWorks images containing application code (often         refer to as &quot;boot code&quot;)</font></li>    </ul>    <blockquote>      <ul>        <li>        <p style="line-height: 150%"><font face="宋體" lang="ZH-CN" size="5"><small><small>&quot;Burned&quot; into ROM or           loaded into Flash.</small></small></font></li>        <li>        <p style="line-height: 150%"><font face="宋體" lang="ZH-CN">Maybe execute in ROM/Flash (ROM-resident).</font></li>        <li>        <p style="line-height: 150%"><font lang="ZH-CN">Maybe execute out of RAM.</font><font face="宋體" lang="ZH-CN"> </font></li>      </ul>    </blockquote>    <ul>      <li>      <p style="line-height: 150%"><font lang="ZH-CN" face="宋體" size="4"><strong>VxWorks images---</strong>A VxWorks         image containing &quot;end-user&quot; code,Sub-types:</font></li>    </ul>    <blockquote>      <ul>        <li>        <p style="line-height: 150%"><font face="宋體" lang="ZH-CN" size="5"><small><small>Loadable VxWorks image--VxWorks            images loaded by VxWorks boot image.</small></small></font></li>       </ul>      <blockquote>      <blockquote>        <p style="line-height: 150%">Loadable VxWorks image是通過VxWorks boot image裝載的VxWorks images.&nbsp;      </blockquote>    </blockquote>    <ul>        <li>        <p style="line-height: 150%"><font face="宋體" lang="ZH-CN">VxWorks ROM image--VxWorks image &quot;burned&quot;           into ROM or loaded into Flash.May execute in Flash.</font></li>      </ul>      <p style="line-height: 150%"><big><strong>VxWorks images consist of:</strong></big><ul>        <li>        <p style="line-height: 150%"><small><font face="宋體" lang="ZH-CN" size="5"><small>Text segment---executable           instruction.</small></font></small></li>        <li>        <p style="line-height: 150%"><font face="宋體" lang="ZH-CN">Data segment---Initilized global and static varibles.</font></li>        <li>        <p style="line-height: 150%"><font lang="ZH-CN">BSS.</font><font face="宋體" lang="ZH-CN"> </font></li>      </ul>    </blockquote>  </blockquote>    <blockquote>    <p style="line-height: 150%"><b>VxWorks Image文件類型的說明</b></p>     <blockquote>    <p style="line-height: 150%"><b>Uploaded images（通過網口或串口下載到RAM）:</b></p>       <p style="line-height: 150%">vxWorks               - basic Tornado, shell 和 symbol table        在主機端&nbsp;<br>      vxWorks.st（文件很大）- 獨立的 image,包含shell和 symbol table在目標板運行<br>       <br>      <b>ROM based images(直接燒入ROM的VxWorks):</b></p>       <p style="line-height: 150%">vxWorks_rom           - Tornado in ROM,非壓縮, 在 RAM 中運行<br>       vxWorks.res_rom_nosym - Tornado in ROM, 非壓縮,在 ROM 中運行<br>       vxWorks.st_rom        - Stand-alone in ROM, 壓縮, RAM 中運行<br>       vxWorks.res_rom       - Stand-alone in ROM, 非壓縮, ROM 中運行</p>     </blockquote>    <p style="line-height: 150%">　</p>    <p style="line-height: 150%"><strong>非BSP make文件中包括:</strong></p>      <p style="line-height: 150%"><big><strong>&nbsp;&nbsp; </strong>include $(TGT_DIR)/h/make/rules.library</big></p>      <blockquote>       <p style="line-height: 150%"><big>include $(TGT_DIR)/h/make/defs.default(define default value for makefile)</big></p>       <p style="line-height: 150%"><big>...............</big></p>     </blockquote>     <p style="line-height: 150%"><strong>BSP make文件中包括: </strong>include $(TGT_DIR)/h/make/rules.bsp ...</p>      <p style="line-height: 150%">ARM7 做VxWorks imgage 時,在makefile 文件中用 MACH_EXTRA 代替 LIB_EXTRA,       這樣生成的VxWorks時不壓縮的在ROM中運行的程序(uncompressed ROM-based       VxWorks image),否則就是壓縮的在RAM中運行的程序(compressed RAM-based VxWorks       image).</p>     <p style="line-height: 150%">　</p>  <p style="line-height: 150%"><big><strong>啟動順序的一些概念</strong></big><ul>    <li>      <p style="line-height: 150%"><font lang="ZH-CN" face="宋體" size="4">The sequence of events which occur as power-up           are a function of type VxWorks image with will run.</font></li>        <li>       <p style="line-height: 150%">處理器&quot;跳&quot;到再ROM或Flash中Boot-strap 程序的起點.           這個程序主要有以下作用:</li>     </ul>     <blockquote>       <ul>         <li>         <p style="line-height: 150%">關閉中斷(來自處理器)</li>        <li>        <p style="line-height: 150%">初始化目標內存(target memory)</li>          <li>         <p style="line-height: 150%">裝載要運行的VxWorks image segments</li>          <li>         <p style="line-height: 150%">Jumps to code to place target in quiet state</li>       </ul>     </blockquote>   </blockquote>      <blockquote>     <ul>       <li>       <p style="line-height: 150%"><font lang="ZH-CN" face="宋體" size="4"><strong>啟動順序 Boot Sequence--Loadable           VxWorks image</strong></font></li>      </ul>     <blockquote>       <ul>         <li>         <p style="line-height: 150%"><font lang="ZH-CN" face="宋體" size="4">Bootstrap code executes and loads text and             data segments of boot code(from ROM or Flash) into RAM.具體執行如下:</font></li>        </ul>       <blockquote>         <ul>           <li>           <p style="line-height: 150%"><font lang="ZH-CN" face="宋體" size="4">Boot code compressed-Decompression during copy</font></li>          <li>          <p style="line-height: 150%"><font lang="ZH-CN" face="宋體" size="4">Boot code uncompressed-copy</font></li>          <li>          <p style="line-height: 150%"><font lang="ZH-CN" face="宋體" size="4">Boot code is ROM-resident-copy data segment             only</font></li>        </ul>      </blockquote>      <ul>        <li>        <p style="line-height: 150%"><font lang="ZH-CN" face="宋體" size="4">Boot program executes and loads VxWorks image           into RAM.<u>Jumps to VxWorks load point</u>.</font></li>        <li>        <p style="line-height: 150%"><font lang="ZH-CN" face="宋體" size="4">System initialization code statically linked           into loaded VxWorks image executes and completes initialization.</font></li>      </ul>    </blockquote>    <ul>      <li>      <p style="line-height: 150%"><font lang="ZH-CN" face="宋體" size="4"><strong>Startup Sequence--VxWorks 初始化</strong></font></li>      </ul>     <blockquote>       <p style="line-height: 150%"><font lang="ZH-CN" face="宋體" size="4"><strong>做以下工作:</strong></font><ul>         <li>         <p style="line-height: 150%"><font lang="ZH-CN" face="宋體" size="4">Place hardware environment in a quiet state.</font></li>        <li>        <p style="line-height: 150%"><font lang="ZH-CN" face="宋體" size="4">Initalize and start the wind kernel</font></li>        <li>        <p style="line-height: 150%"><font lang="ZH-CN" face="宋體" size="4">Spawn a tast to complete system initialization</font></li>      </ul>    </blockquote>    <ul>      <li>