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From: Matthew McClintock <msm@freescale.com>
To: Fredrik Roubert <roubert@df.lth.se>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: How to move from /ppc/ to /powerpc/
Date: Mon, 25 Sep 2006 13:59:23 -0500	[thread overview]
Message-ID: <1159210763.5485.10.camel@localhost> (raw)
In-Reply-To: <20060925174101.GC21204@igloo.df.lth.se>

On Mon, 2006-09-25 at 19:41 +0200, Fredrik Roubert wrote:

> Now I'm back to the state of last Thursday (except for getting rid of
> the unnecessary chosen node and getting bootargs passed nicely), which
> means that the serial console initially works, but stops working after
> the call to console_init() in start_kernel().

Do you have all the other OF related defines in your u-boot config
file? 

#define OF_CPU                  "PowerPC,8540@0"
#define OF_SOC                  "soc8540@e0000000"
#define OF_TBCLK                (bd->bi_busfreq / 8)
#define OF_STDOUT_PATH          "/soc8540@e0000000/serial@4500"

Maybe you are not properly setting up entries in the flat device tree
passed to the kernel. So when the kernel takes over and re-initializes
the serial port the speed is all messed up.

Can you verify the flat device tree passed to the kernel is correct?
Specifically these properties:

                timebase-frequency = <0>;       // from bootloader
                bus-frequency = <0>;            // from bootloader
                clock-frequency = <0>;          // from bootloader

-Matthew

  reply	other threads:[~2006-09-25 18:59 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-09-12 15:33 How to move from /ppc/ to /powerpc/ Fredrik Roubert
2006-09-12 15:58 ` Kim Phillips
2006-09-12 16:03   ` Jon Loeliger
2006-09-13 13:28   ` Fredrik Roubert
2006-09-13 14:46     ` Jon Loeliger
2006-09-13 17:07     ` Matthew McClintock
2006-09-21 16:08     ` Fredrik Roubert
2006-09-25 16:49       ` Matthew McClintock
2006-09-25 17:17         ` Fredrik Roubert
2006-09-25 17:20           ` Matthew McClintock
2006-09-25 17:41             ` Fredrik Roubert
2006-09-25 18:59               ` Matthew McClintock [this message]
2006-09-27 14:49                 ` Fredrik Roubert
2006-09-27 15:51     ` Fredrik Roubert
2006-09-12 16:20 ` Vitaly Bordug
  -- strict thread matches above, loose matches on Subject: below --
2006-09-13  6:58 Claus Gindhart
2006-09-13 13:30 ` Fredrik Roubert
2006-09-13 14:07 Claus Gindhart
2006-09-25 16:56 Joakim Tjernlund

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