From: Reinhard Arlt <reinhard.arlt@t-online.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] IRQ in realmode and sleep()
Date: Thu, 01 Jul 2010 10:14:44 +0200 [thread overview]
Message-ID: <4C2C4E74.8060801@t-online.de> (raw)
In-Reply-To: <20100630075949.7B60B14EBF7@gemini.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
>
prev parent reply other threads:[~2010-07-01 8:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-29 8:03 [U-Boot] IRQ in realmode and sleep() Reinhard Arlt
2010-06-29 18:44 ` Scott Wood
2010-06-30 7:02 ` Reinhard Arlt
2010-06-30 7:59 ` Wolfgang Denk
2010-07-01 8:14 ` Reinhard Arlt [this message]
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