oh! It'll boot from the serial port?!


.... COooool. :)



On Wed, Sep 2, 2009 at 12:32 PM, R. P. McMurphy <loginreg@gmail.com> wrote:
Just FYI, i.e. this is not an answer to the original question.

The "trash" at the beginning is the boot ROM sending the start-up ID
to see if a device wants to boot from the serial port. The reason it
looks random is because it uses even-parity which screws up the
no-parity receiver.

Anyhow, how that helps someone.

On 9/3/09, richard dorfner <rdorfner@gmail.com> wrote:
> I always get a little bit of trash like that too when the system first comes
> on, not sure why. Are you sure it's not your serial terminal on the
> receiving end that is not locking up? Have you tried resetting the serial
> connection to see if you regain comm with the Overo?
>
> Rick
>
>
> On Wed, Sep 2, 2009 at 10:30 AM, JerryJohns <jerry.johns@nuvation.com>wrote:
>
>>
>> I have a few Overo Earth modules coupled to Palo43 boards, and one of them
>> has a flaky boot problem:
>> Usually after power-on, i get the following stream in my serial console:
>>
>> ------------------------------------------------------------------------
>> tb $U
>> @D tb $U
>> @D
>>
>> Texas Instruments X-Loader 1.4.2 (Jul 8 2009 - 21:19:00)
>> Reading boot sector
>> Error: reading boot sector
>> Loading u-boot.bin from nand
>>
>>
>> U-Boot 2009.06-rc2 (Jul 08 2009 - 21:20:30)
>>
>> OMAP3503-GP ES2.1, CPU-OPP2 L3-165MHz
>> Gumstix Overo board + LPDDR/NAND
>> DRAM: 256 MB
>> NAND: 256 MiB
>> In: serial
>> Out: serial
>> Err: serial
>> Die ID #489000020000000004031c130101901a
>> ------------------------------------------------------------------------
>>
>> During a flaky boot, i just get this and just hangs:
>> ------------------------------------------------------------------------
>> tb $U
>> D tb $U
>> ------------------------------------------------------------------------
>> I notice the two LEDS (purple and red) below the Palo43 are lit.
>> Successive power-ons don't fix the issue, and its extremely random.
>> Sometimes i power cycle about 10 times before it works.
>>
>> Bad board? Or have others noticed this before? I seem to sense that the
>> problem is that it might be doing some kind of peripheral booting before
>> resorting to NAND boot.
>>
>> Thanks,
>>
>> Jerry
>> --
>> View this message in context:
>> http://www.nabble.com/Overo-Earth---Flaky-boot-tp25259862p25259862.html
>> Sent from the Gumstix mailing list archive at Nabble.com.
>>
>>
>>
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>
>
>
> --
> Say you can or say you can't, either way you will be right.
> Computers are like old testament gods: Lots of rules and no mercy.
>

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Say you can or say you can't, either way you will be right.
Computers are like old testament gods: Lots of rules and no mercy.