[U-Boot-Users] SDRam check
Wolfgang Denk
wd at denx.de
Fri Jul 9 23:02:52 CEST 2004
In message <BAY2-F24TSBmf81DMee0003463d at hotmail.com> you wrote:
>
> The u-boot starts fine on my walnut board and runs hello_world fine on that
> board. Does that mean the SDRAM settings are just fine? Since my linux
No, it does not.
> kernel stops somewhere, I have to find a way to make sure the SDRAM runs OK.
The only real challenging test is to run Linux :-) No other test I've
seen so far loads the system in a comparable way, especially when you
have the root filesystem mounted over NFS, so a lot of network
traffic (= DMA) is going on all the time.
All other tests more or less boil down to simple read / write
accesses; this is fine to detect real hardware problems, but not
sufficient to verify that burst mode accesses work reliably.
Best regards,
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de
It may be that your whole purpose in life is simply to serve as a
warning to others.
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