a) 安裝VMware --- just do it.
b) 安裝arm-elf-gcc toolset --- we can get it from: http://www.gnuarm.com/
c) 安裝JLINK軟件 --- just get it from SEGGER website.
d) 實現2440 gdb 啟動腳本:
1) 參閱JLinkGDBServer文檔，如下：
文件: UM08005_JLinkGDBServer.pdf 大小: 509KB
本文要用到的相關文件下載在Linux公社的1號FTP服務器裡，下載地址：
FTP地址：ftp://www.linuxidc.com
用戶名：www.linuxidc.com
密碼：www.muu.cc
在 2011年LinuxIDC.com\3月\搭建GCC+JLINK開發調試環境（裸機調試）
下載方法見 http://www.linuxidc.net/thread-1187-1-1.html
2) 此gdb啟動腳本的主要任務是初始化內存控制器，禁止WatchDog，禁止中斷。
參考JLinkGDBServer文檔後，經測試，以下代碼可以正常工作：
##main function defined for initial the S3C2440 CPU.
define reset_2440
monitor endian little ##little endian, should be the same as your application.
##copied from JLinkGDBServer Document.
monitor reset ##reset the S3C2440
monitor reg cpsr = 0xd3 ##setup cpsr register.
monitor speed auto ##Link Speed.
##translated from VIVI S3C2440 version.
#disable watchdog
monitor MemU32 0x53000000 = 0
#disalbe interrupt --- int-mask register
monitor MemU32 0x4A000008 = 0xFFFFFFFF
#disalbe interrupt --- int-sub-mask register
monitor MemU32 0x4A00001C = 0x7FFF ## vivi set it as 0x7FF, why???
#initialize system clocks --- locktime register
monitor long 0x4C000000 = 0xFF000000
#initialize system clocks --- clock-divn register
monitor long 0x4C000014 = 0x5 #CLKDVIN_400_148
#initialize system clocks --- mpll register
monitor long 0x4C000004 = 0x7f021 #default clock
#setup memory controller
monitor MemU32 0x48000000 = 0x22111110 #conw
monitor MemU32 0x48000004 = 0x00000700 #bank0
monitor MemU32 0x48000008 = 0x00000700 #bank1
monitor MemU32 0x4800000c = 0x00000700 #bank2
monitor MemU32 0x48000010 = 0x00000700 #bank3
monitor MemU32 0x48000014 = 0x00000700 #bank4
monitor MemU32 0x48000018 = 0x00000700 #bank5
monitor MemU32 0x4800001c = 0x00018009 #bank6
monitor MemU32 0x48000020 = 0x00018009 #bank7
monitor MemU32 0x48000024 = 0x008e04eb #vREFRESH
monitor MemU32 0x48000028 = 0xB2 #vBANKSIZE -- 128M/128M --- should
according to the physical
memory size? --- 0xB0 ??
monitor MemU32 0x4800002c = 0x30 #vMRSRB6
monitor MemU32 0x48000030 = 0x30 #vMRSRB7
end
##main function defined for connect to the TARGET.
##arg0 = IP address.
##arg1 = PORT number of JLINK gdb server.
define connect_jei
if $argc == 2
target remote $arg0:$arg1
reset_2440
end
end
3) 腳本做好以後，以下命令為怎樣使用該腳本---假設該腳本名字為targets.cmd,編譯出的程序文件為main.out
arm-elf-gdb -x targets.cmd -ex "connect_jei 192.168.1.168 2331" main.out
然後在gdb命令行中輸入以下命令即可調試了:
load
b main
c
