From mboxrd@z Thu Jan  1 00:00:00 1970
From: Reinhard Arlt <reinhard.arlt@t-online.de>
Date: Thu, 01 Jul 2010 10:14:44 +0200
Subject: [U-Boot] IRQ in realmode and sleep()
In-Reply-To: <20100630075949.7B60B14EBF7@gemini.denx.de>
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	<20100629184405.GC24215@schlenkerla.am.freescale.net>
	<4C2AEC16.9080906@t-online.de>
	<20100630075949.7B60B14EBF7@gemini.denx.de>
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To: u-boot@lists.denx.de

Hello,

i is the other way round.

as there is no translation on (real mode) when executing the irq 
routine, the data caching always is on.

Best regards,

Reinhard Arlt

Wolfgang Denk wrote:
> Dear Reinhard Arlt,
>
> In message<4C2AEC16.9080906@t-online.de>  you wrote:
>>
>> The question is: Is it O.K., that the irq routines run in real mode,
>> with all your I/O locations are cacheable, for example.
>
> I expect to see problems when you enable data cache for I/O; there are
> many drivers in U-Boot which are not prepared for such conditions.
>
> Best regards,
>
> Wolfgang Denk
>