From mboxrd@z Thu Jan  1 00:00:00 1970
From: Scott McNutt <smcnutt@psyent.com>
Date: Wed, 23 Mar 2005 21:56:01 -0500
Subject: [U-Boot-Users] do_bootm() and flush_cache()
In-Reply-To: <20050323192155.52210C108D@atlas.denx.de>
References: <20050323192155.52210C108D@atlas.denx.de>
Message-ID: <42422C41.3040200@psyent.com>
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To: u-boot@lists.denx.de

>>But after reviewing do_bootm(), I don't see where the
>>caches are flushed. A call to flush_cache() after
>>moving/decompressing the image seems appropriate, but
> 
> 
> Why?

After the move/decompression, the data cache must be
flushed to main memory ... otherwise an instruction
cache miss (after jumping into the kernel) may read
in a (potentially) stale line. (Neither cache can be
disabled.)

Regards,
--Scott