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Last Post 07 Nov 2006 02:54 PM by  Anonymous
Lost DBUG
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alaemmer@htwg-konstanz.de
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31 Oct 2006 08:04 AM
    We have a M5485EVB with DBUG from Freescale and Logicloader from LogicPD. Logicloader uses ff840000 as address so that we can use both.

    Now I tried to save a Ethernet MAC address to the Logicload config. After this action I can not start DBUG anymore. There is no seriell output.

    But it is still possible to access the board with CodeWarrior an the BDM interface.

    Killed the Logicloader the DBUG? How can we restore the DBUG?

    Best regards,

    André
    Anonymous
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    31 Oct 2006 11:27 AM
    My guess is that when you used the lolo config command it created the config block right over the top of dBUG. So now dBUG is gone as well. You will need to reload dBUG/Lolo combo from our website using the supplied USB BDM tool. Please refer to the LogicLoader procedures doc for this information.

    http://www.logicpd.com/do...56/1000199_Rev_C.pdf

    Is there a reason why you don't want to store the MAC address somewhere convenient and easier to access from your OS instead of trying to use Lolo?
    alaemmer@htwg-konstanz.de
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    31 Oct 2006 11:59 AM
    Is it possible to use both boot loaders?

    I want a unique way to set the MAC Ethernet address. So I thought I could set it up in LogicLoader and read the config from your RTOS MQX.

    What is the best location to store the Ethernet addresses?

    André
    Anonymous
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    31 Oct 2006 12:10 PM
    Yes it is possible. The docs describe where LogicLoader can be placed in flash ( either 0x00000000 or 00004000 ) to make room for dBUG which will be at 0x00000000.

    In regards to what you're wanting to do with the config block it is not recommended or supported outside of LogicLoader. This isn't to say that it is not possible to do this with software, it probably will just be a bit of work to get there. If you'd like help with this development Logic would be happy to assist under support contract.

    Thanks,
    alaemmer@htwg-konstanz.de
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    31 Oct 2006 12:31 PM
    I installed lolo at 0xff840000. Is this enough or have I to change something else?

    How gets a linux system the MAC address from the fire engine?

    André
    Anonymous
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    07 Nov 2006 02:54 PM
    If you are using Logic's Linux BSP the easiest way to accomplish this would be to use a YAFFS file partition between the bootloader and OS and store your MAC address there.
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