From: Marek Vasut <marex@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] mx28evk: Scan only first 512 MB of DRAM to avoid memory wraparound
Date: Sat, 12 May 2012 19:06:35 +0200 [thread overview]
Message-ID: <201205121906.35600.marex@denx.de> (raw)
In-Reply-To: <CAOMZO5DgSyMVo0KE3tQAAw=bVL9LV-Kk2WZzb+pW763bnLwekQ@mail.gmail.com>
Dear Fabio Estevam,
> On Sat, May 12, 2012 at 1:19 PM, Marek Vasut <marex@denx.de> wrote:
> > All right, this approach is valid then. Btw. Fabio, can you verify that
> > you don't see any memory aliasing now (just to avoid trouble).
>
> How can I verify this, please?
Try writing some pattern into DRAM at "offset-sizeof(pattern area)" and try
reading it from "2*offset + sizeof(pattern area)" ... try doing the same for
4*offset etc.
You might also be able to read data from memory behind what uboot considers as
detected DRAM which will have the same contents as the detected DRAM etc.
>
> Regards,
>
> Fabio Estevam
Best regards,
Marek Vasut
next prev parent reply other threads:[~2012-05-12 17:06 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-12 16:07 [U-Boot] [PATCH] mx28evk: Scan only first 512 MB of DRAM to avoid memory wraparound Fabio Estevam
2012-05-12 16:10 ` Marek Vasut
2012-05-12 16:14 ` Fabio Estevam
2012-05-12 16:19 ` Marek Vasut
2012-05-12 16:40 ` Fabio Estevam
2012-05-12 17:06 ` Marek Vasut [this message]
2012-05-12 16:51 ` Fabio Estevam
2012-05-12 17:07 ` Marek Vasut
2012-05-12 21:22 ` Wolfgang Denk
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