[U-Boot-Users] Re: Usually dram test executed not on whole sdram
wd at denx.de
Wed May 10 21:59:25 CEST 2006
In message <20060510134646.18278.qmail at mx1.aruba.it> you wrote:
> I disabled burst mode in ORx register of MPC880 and everything is fine.
> The UPM table has to be double checked.
I repeat: please READ the FAQ! The UPM table is just half of the
story, and often NOT the culprit.
> Now I want to look for a dram test that exercise the burst mode. It could be
> really useful in debugging these problems.
See examples/test_burst.* - but don't expect that it will be usable
out of the box, or without a *deep* understanding of the relevant
It is much easier and more straightforward just to read the chip
manufacturer's manual for your RAM chips and implement the documented
init sequence to the letter.
This is a RTFAQ and RTFM job.
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Hacking's just another word for nothing left to kludge.
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