From mboxrd@z Thu Jan  1 00:00:00 1970
From: Albert ARIBAUD <albert.u.boot@aribaud.net>
Date: Sun, 18 Sep 2011 18:24:13 +0200
Subject: [U-Boot] [PATCH 5/5 v1] integrator: make flash writeable on boot
In-Reply-To: <20110918132415.08F331407963@gemini.denx.de>
References: <1316332378-18521-1-git-send-email-linus.walleij@linaro.org>
	<4E75C4A4.20604@aribaud.net>
	<20110918132415.08F331407963@gemini.denx.de>
Message-ID: <4E761B2D.8020908@aribaud.net>
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Le 18/09/2011 15:24, Wolfgang Denk a ?crit :
> Dear Albert ARIBAUD,
>
> In message<4E75C4A4.20604@aribaud.net>  you wrote:
>>
>> Le 18/09/2011 09:52, Linus Walleij a =E9crit :
>>> This reconfigures the EBI (External Bus Interface) on the
>>> integrator so that chip select 1, handling the flash memory, is
>>> set to writeable. Without this it is not possible for U-Boot to
>>> access flash memory and it crashes on startup since CFI won't
>>> work properly.
>>
>> Do you mean that U-Boot writes to the flash at each boot on this board?
>
> I think this is a misunderstanding of terms.  When we try to
> identify the flash type and geomentry in the CFI driver, we do send
> certain commands to the flash, and read the returned data.  This
> "sending commands" includes write cycles to the flash address space,
> so it is necessary that the memory controller setup allows write
> cycles on the bus.
>
> This does however NOT mean that any data are programmed into the
> flash.

Indeed, I had misunderstood the commit message. Apologies.

> Best regards,
>
> Wolfgang Denk

Amicalement,
-- 
Albert.