From: "Richard Hendricks" <richard.hendricks@motorola•com>
To: Jim Lewis <jlewis@mvista•com>
Cc: Jochen Roth <jochen@znyx•com>, linuxppc-embedded@lists•linuxppc.org
Subject: Re: Board boots when in BDM, hangs otherwise
Date: Tue, 02 May 2000 10:01:25 -0500 [thread overview]
Message-ID: <390EEDC5.362C58FB@motorola.com> (raw)
In-Reply-To: 390E1575.5FED84DD@mvista.com
Jim Lewis wrote:
>
> Hi Josh,
..
> Ther is one register that the IN command sets that it does not tell you about. That
> is the ICTRL register, which controls serialization of the core, among other
> things. On powerup, it is set to SHOW-ALL-INSTRUCTION-FETCH-CYCLES. Some 8xx
> processors have problems with this. Read the errata. Check to make sure you are
> setting ICTRL to something like 0x07 in your firmware.
>
> -Jim
This is also probably the source of your slowdown when running
off of BDM.
Also make sure the watchdog is disabled (Dan's code does this, I think).
If anyone is interested, I can post the startup file I use for
running from flash on the FADS board using Metrowerks. I finally
figured out a way that I can run the same flash image standalone,
and through MPC8bug.
--
MPC823 Applications Engineering Development
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2000-05-02 15:01 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-05-01 22:40 Board boots when in BDM, hangs otherwise Jochen Roth
2000-05-01 23:38 ` Jim Lewis
2000-05-02 13:59 ` Joshua Horvath
2000-05-02 15:01 ` Richard Hendricks [this message]
2000-05-02 21:22 ` Richard Hendricks
-- strict thread matches above, loose matches on Subject: below --
2000-05-01 19:36 Joshua Horvath
2000-05-01 22:39 ` Dan Malek
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