[U-Boot-Users] CFG_FLASH_BASE and CFG_MONITOR_BASE question
wd at denx.de
Thu Jul 15 00:41:26 CEST 2004
In message <BAY2-F42kIFqFtucwpX000d8fad at hotmail.com> you wrote:
> Yes, I did try it out. Seems the u-boot works fine and the example
> application runs fine in SDRAM. But when I tried to load the kernel, kernel
> hangs when early_init (in head_4xx.S) is called. So I want to come back to
> u-boot and double check everything in u-boot is correct.
I think we've been there before. How do you know that the kernel
"hangs", and what exactly means "hangs" here?
Don't tell me again that you added some debug code to toggle LED's or
write to memory or something like that.
Your "it hangs" may be an "it chrashes because of your debug code"
with your debug code, and something completely different without it.
Attach a debugger and find out what's really going on.
In a first step, I recommend to re-read the FAQ section.
> BTW, does anyone happen to have early_init problem and solved it? I saw a
Yes. Many people have posted such problems before, and in all cases I
can remember the only problem was some debug code that had been
added, or the attempt to use tools (or engineers) that have no idea
what virtual memory is.
> lot of discussions on the internet. But most of them didn't give a final
> solution. It doesn't matter if we are using same board or CPU. I just want
> to get some idea of what could be wrong. Any input would be appreciated!
We've been there before. Everything has been said before. follow the
advice, or ignore it - your choice. I give up here. I will stop
reading this thread and replying to it.
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de
What about WRITING it first and rationalizing it afterwords? :-)
- Larry Wall in <8162 at jpl-devvax.JPL.NASA.GOV>
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