From: jamie@shareable.org (Jamie Lokier)
To: linux-arm-kernel@lists.infradead.org
Subject: Query about arm Dcache/Icache ?
Date: Thu, 4 Mar 2010 17:15:38 +0000 [thread overview]
Message-ID: <20100304171538.GB28495@shareable.org> (raw)
In-Reply-To: <12E2D0F704624646AF3EE27EFBBD5321@dufan>
rocky wrote:
>
> Hi allJ
>
> >From ARM920T, cache is split into Icache and Dcache.
>
> Question: How does hardware know which part of binary program in
> memory should loaded into Icache/Dcache?
It loads code into Icache when executing it, and it loads data into
Dcache when accessed by memory instructions. Not very complicated :-)
(Some later ARMs can also load both speculatively,
which is a bit of a pain for DMA.)
-- Jamie
prev parent reply other threads:[~2010-03-04 17:15 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-26 7:05 Query about arm Dcache/Icache ? rocky
2010-03-04 17:15 ` Jamie Lokier [this message]
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