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From: Jerry Van Baren <gerald.vanbaren@ge.com>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] Increasing U-Boot partition size
Date: Mon, 04 Aug 2008 16:35:24 -0400	[thread overview]
Message-ID: <4897680C.1000309@ge.com> (raw)
In-Reply-To: <20080804203311.E078124885@gemini.denx.de>

Wolfgang Denk wrote:
> In message <489765FB.1010002@ge.com> you wrote:
>>> Your choices are 0xfff00000 and zero, based on the BMS (Boot Memory 
>>> Space) bit of the low reset control word.
>>>
>>> -Scott
>> ...and of the two options, I recommend 0xfff00000 ("boot high").  Note 
>> that the start of u-boot is 0xfff00000 but the reset vector itself is 
>> 0xfff00100 (or 0x00000100 for "boot low").  The first 0x100 bytes has 
>> the u-boot signature and version info.
> 
> I disagree.
> 
> High-booting systems are a PITA. You always lose a full  megabyte  at
> the  end of the flash of which usually only 256 kB or less are needed
> for U-Boot, wasting 0.75 MB.
> 
> Also, systems with varying number of flash banks and/or flash sizes
> are not really straightforward to handle.
> 
> Low-booting is much, much saner.
> 
> Best regards,
> 
> Wolfgang Denk

Arrr, my insanity.  Wolfgang is correct, of course.

Sorry,
gvb

  reply	other threads:[~2008-08-04 20:35 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-08-01 17:16 [U-Boot-Users] Increasing U-Boot partition size Jatin Sharma
2008-08-04 17:56 ` Scott Wood
2008-08-04 19:03   ` Jatin Sharma
2008-08-04 19:04     ` Scott Wood
2008-08-04 19:59       ` Jatin Sharma
2008-08-04 20:01         ` Scott Wood
2008-08-04 20:03           ` Scott Wood
2008-08-04 20:26           ` Jerry Van Baren
2008-08-04 20:33             ` Wolfgang Denk
2008-08-04 20:35               ` Jerry Van Baren [this message]
2008-08-04 20:44                 ` David Hawkins
2008-08-04 20:50                   ` Jerry Van Baren

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