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From: Thierry Reding <thierry.reding@gmail.com>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Embedded Engineer <embed786@gmail.com>,
	linux-arm-kernel@lists.infradead.org
Subject: Re: Unstable Kernel behavior on an ARM based board
Date: Mon, 4 Mar 2019 15:27:35 +0100	[thread overview]
Message-ID: <20190304142735.GC24676@ulmo> (raw)
In-Reply-To: <20190304140042.GE26378@lunn.ch>


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On Mon, Mar 04, 2019 at 03:00:42PM +0100, Andrew Lunn wrote:
> > Do you suggest board redesign is only option left?
> 
> Have you checked your cache configuration when you jump into the
> kernel?
> 
> If i remember correctly, you need all caches turned off. I've had
> problems with an ARM v5 system which got this wrong, left the caches
> turned on, and so the kernel corrupted itself during startup.

That's a good point. I vaguely remember this being an issue on Tegra a
long time ago and given that U-Boot on this board seems to be fairly old
it's not something I would exclude. Recent versions of U-Boot have that
fixed, so might be worth upgrading to a later version for those as well.

Thierry

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  reply	other threads:[~2019-03-04 14:27 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-02 10:44 Unstable Kernel behavior on an ARM based board Embedded Engineer
2019-03-02 11:00 ` Russell King - ARM Linux admin
2019-03-02 11:01 ` Willy Tarreau
2019-03-02 11:22   ` Embedded Engineer
2019-03-02 11:25     ` Willy Tarreau
2019-03-02 11:46       ` Russell King - ARM Linux admin
2019-03-04 13:57         ` Thierry Reding
2019-03-02 11:36     ` Russell King - ARM Linux admin
2019-03-02 11:52       ` Embedded Engineer
2019-03-02 11:57         ` Russell King - ARM Linux admin
2019-03-02 12:20           ` Embedded Engineer
2019-03-02 12:39             ` Russell King - ARM Linux admin
2019-03-02 13:10               ` Embedded Engineer
2019-03-02 15:07               ` Clemens Koller
2019-03-04  5:14                 ` Embedded Engineer
2019-03-04 10:26                   ` Vladimir Murzin
2019-03-04 12:25                     ` Embedded Engineer
2019-03-04 14:25                       ` Thierry Reding
2019-03-04 15:51                         ` Embedded Engineer
2019-03-05 10:01                         ` Embedded Engineer
2019-03-05 10:07                           ` Russell King - ARM Linux admin
2019-03-05 10:29                             ` Embedded Engineer
2019-03-05 11:20                               ` Thierry Reding
2019-03-05 11:22                               ` Russell King - ARM Linux admin
2019-03-05 11:57                                 ` Thierry Reding
2019-03-05 13:16                                   ` Embedded Engineer
2019-03-05 13:23                                     ` Russell King - ARM Linux admin
2019-03-05 13:32                                       ` Embedded Engineer
2019-03-05 14:23                                         ` Russell King - ARM Linux admin
2019-03-05 14:57                                           ` Embedded Engineer
2019-03-05 14:58                                             ` Russell King - ARM Linux admin
2019-03-05 15:11                                               ` Embedded Engineer
2019-03-05 15:31                                                 ` Russell King - ARM Linux admin
2019-03-05 15:44                                                   ` Embedded Engineer
2019-03-15  8:55                                                     ` Marcel Ziswiler
2019-03-05 16:00                                                   ` Clemens Koller
2019-03-05 16:21                                                     ` Embedded Engineer
2019-03-09  7:50                                                     ` Embedded Engineer
2019-03-05 10:32                           ` Thierry Reding
2019-03-05 11:05                             ` Embedded Engineer
2019-03-05 11:36                               ` Thierry Reding
2019-03-04 14:00                   ` Andrew Lunn
2019-03-04 14:27                     ` Thierry Reding [this message]
2019-03-04 15:27                     ` Embedded Engineer
2019-03-04 15:57                       ` Andrew Lunn
2019-03-04 16:03                         ` Embedded Engineer

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