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From: Marek Vasut <marex@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] arm: fix memory coherency problem after relocation
Date: Thu, 20 Jun 2013 15:56:27 +0200	[thread overview]
Message-ID: <201306201556.27564.marex@denx.de> (raw)
In-Reply-To: <1371492435-14330-1-git-send-email-mikedunn@newsguy.com>

Dear Mike Dunn,

> On the xscale, the icache must be invalidated and the write buffers drained
> after writing code over the data bus, even if the caches are disabled. 
> After rebasing with the main git repository, u-boot began crashing in odd
> places on my pxa270 board (palmtreo680) after the code relocation routine
> ran.  This patch fixes it.  Cache coherency problems are often
> hit-and-miss (ha ha), and this latent problem didn't rear its ugly head
> until now.  Tested on the pxa270.
> 
> Signed-off-by: Mike Dunn <mikedunn@newsguy.com>
> ---
> 
> I realize that __ARM_ARCH_5TE__ does not necessarily mean xscale.

We should introduce some CONFIG_PXA I guess.

Best regards,
Marek Vasut

  reply	other threads:[~2013-06-20 13:56 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-06-17 18:07 [U-Boot] [PATCH] arm: fix memory coherency problem after relocation Mike Dunn
2013-06-20 13:56 ` Marek Vasut [this message]
2013-06-20 17:04   ` Mike Dunn
2013-06-20 20:19     ` Marek Vasut

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