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Hi, Stefan,<BR>
<BR>
Thanks for your help.<BR>
<BR>
My platform uses the MICRON MT47H256M8THN DDRII SDRAM and the DDRII SDRAM is soldered on the board.<BR>
<BR>As I said, my board was similar with "Kilauea" evb, so I created my configuration header file from Kilauea's at U-Boot. In the configuration file, register value for the DDR SDRAM controller is defined. But I have removed DDR autocalibraton related configuration from the configuration file, do you think this will cause any issues?<BR>
<BR>
I'm not sure what you mean about "intensive memory test". I use "mm" cmd under U-Boot command prompt to modify value of high 512M memory, and this command works well.<BR>
<BR>
About booting Linux, the kernel hangs at the same location. Always after this print info "<4>Mount-cache hash table entries: 512".<BR><BR>
Best Regards,<BR>
Sun<BR>
<BR>> From: sr@denx.de<BR>> To: linuxppc-dev@ozlabs.org<BR>> Subject: Re: Help!Some memory doesn't work on PPC405Ex based board!<BR>> Date: Tue, 14 Apr 2009 11:23:02 +0200<BR>> CC: sunwx2001@hotmail.com<BR>> <BR>> On Monday 13 April 2009, SunNeo wrote:<BR>> > I'm porting Linux-2.6.29 on PPC405Ex based board, it's very similar to AMCC<BR>> > "Kilauea" evb.<BR>> ><BR>> > In my board, two 512MB DDRII memory is connected to 2 ranks of the 405Ex<BR>> > CPU. This 1GB memory works well at U-Boot-2009.01, but when I boot<BR>> > Linux-2.6.29, the kernel hangs somewhere.<BR>> <BR>> Does it just hang "somewhere", or always at the same location? A random hangup <BR>> could mean that you are having a memory problem (hardware, or wrong <BR>> initialization).<BR>> <BR>> > What interesting is, if I <BR>> > configured the system to use only 512MB memory at U-Boot, the Linux can<BR>> > boot normally.<BR>> <BR>> Are you using DIMM's on your platform? Or soldered chips? Which memory <BR>> initialization code are you using in U-Boot? And which autocalibration code?<BR>> <BR>> Did you do some intensive memory test?<BR>> <BR>> Best regards,<BR>> Stefan<BR><br /><hr />把MSN装进手机，更多聊天乐趣等你挖掘！ <a href='http://mobile.msn.com.cn/' target='_new'>立刻下载！</a></body>
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