From: Jerry Van Baren <gerald.vanbaren@smiths-aerospace.com>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] PPC8xx chip select configuration at startup
Date: Fri, 17 Feb 2006 16:14:28 -0500 [thread overview]
Message-ID: <43F63CB4.8060300@smiths-aerospace.com> (raw)
In-Reply-To: <20060217204822.80970353A86@atlas.denx.de>
Wolfgang Denk wrote:
> In message <43F6091D.7040901@paulidav.org> you wrote:
[snip]
>>> The desired location for FLASH memory will be at 0x0400_0000. This is
>>> the address space to which I link U-Boot.
>>>
>> That's OK. It will simply limit your SDRAM size to 64M.
>
> And my cause other problems as well. Don't do it. Map flash at a high
> address.
Just to be explicit: you _must_ map your flash _well_above_ 0xC000_0000
(the start of the linux kernel area) if you want to run linux.
Since _you_ control BR0 (don't listen to them hardware engineers), you
can put it anywhere you want. 0xFF00_0000 is a good spot. 0xFFF0_0000
is not as good of a spot because it limits you to 16MB of flash. Think
big. ;-)
> Best regards,
>
> Wolfgang Denk
Best regards,
gvb
next prev parent reply other threads:[~2006-02-17 21:14 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-13 18:20 [U-Boot-Users] PPC8xx chip select configuration at startup Steve Strublic
2006-02-17 0:06 ` Wolfgang Denk
2006-02-17 17:34 ` Vladimir Gurevich
2006-02-17 20:48 ` Wolfgang Denk
2006-02-17 21:14 ` Jerry Van Baren [this message]
2006-02-17 22:11 ` Vladimir Gurevich
2006-02-17 22:30 ` Wolfgang Denk
-- strict thread matches above, loose matches on Subject: below --
2006-02-17 16:34 Steve Strublic
2006-02-17 17:13 Steve Strublic
2006-02-17 17:34 ` Vladimir Gurevich
2006-02-17 20:52 ` Wolfgang Denk
2006-02-17 17:59 Steve Strublic
2006-02-17 21:08 ` Wolfgang Denk
2006-02-17 21:16 Steve Strublic
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