瞭解 Etherboot 如何加入新的網路卡驅動程式

STEP 1: 從 Etherboot 原始碼開始

• 源起:
  • 目前有很多新的網路卡雖然有支援 PXE 但是卻沒有正式被 PXELinux 支援. 所以必須要找到可以自行加入新網路卡的方法.
• 作法:
  • 測試環境: Debian Etch 4.0r1
  • 下載 git 版本控制軟體

    # apt-get install git cogito git-core
    

  • 修改 git 預設對應

    # update-alternative --config git
    There are 2 alternatives which provide `git'.
    
      Selection    Alternative
    -----------------------------------------------
     +        1    /usr/bin/git.transition
    *         2    /usr/bin/git-scm
    
    Press enter to keep the default[*], or type selection number: 2
    

  • 如果不修改預設 git 對應為 git-scm 會出現以下錯誤訊息

    # git clone git://git.etherboot.org/scm/gpxe.git
    
    git, the filemanager with GNU Interactive Tools, is now called gitfm.
    
    If you are looking for git, Linus Torvald's content tracker, install
    the cogito and git-core packages and see README.Debian and git(7).
    
    This transition script will be removed in the debian stable
    release after etch.
    
    If you wish to complete the transition early, install git-core
    and use (as root):
     update-alternatives --config git
    
    Press RETURN to run gitfm
    
    
    GNU Interactive Tools 4.3.20 (i586-pc-linux-gnu), 10:15:20 Aug 21 2006
    GIT is free software; you can redistribute it and/or modify it under the
    terms of the GNU General Public License as published by the Free Software
    Foundation; either version 2, or (at your option) any later version.
    Copyright (C) 1993-1999 Free Software Foundation, Inc.
    Written by Tudor Hulubei and Andrei Pitis, Bucharest, Romania
    
    /usr/bin/gitfm: fatal error: `chdir' failed: permission denied.
    

  • 下載 Etherboot 最新版原始碼

    # git clone git://git.etherboot.org/scm/gpxe.git
    

  • 從 Etherboot 原始碼中的 src/drivers/net/sis900.c 開始看

    # cd gpxe
    ~/gpxe# cd src/drivers/net/
    ~/gpxe/src/drivers/net/# ls sis900*
    sis900.c   sis900.h