From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wolfgang Denk <wd@denx.de>
Date: Tue, 29 Jan 2008 23:32:52 +0100
Subject: [U-Boot-Users] [rfc] new spiflash subsystem
In-Reply-To: Your message of "Tue, 29 Jan 2008 00:01:15 +0100."
	<017901c8620a$d600f0c0$030514ac@atmel.com>
Message-ID: <20080129223252.3FB41248CC@gemini.denx.de>
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To: u-boot@lists.denx.de

In message <017901c8620a$d600f0c0$030514ac@atmel.com> you wrote:
> 
> There is a general problem with U-Boot which seems to assume
> that there is more RAM than flash in the system.

U-Boot does not make any such assumption - at least none of the ports
I know of.

> How do you easily copy 256 MB from an SD-Card to an onboard 256 MB NAND flash
> when the SDRAM is 64 MB?

Please read the archives. We've had this discussion a long time before.

> The vanilla way of supporting storage devices is really wasteful in resources, 
> and you cannot compare two memory areas if the memory area is larger than
> half the SDRAM size.

You can compare *memory* areas of any size that is mapped into the
processor's address space. I guess you are talking about storage
devices. 

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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