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Re: [ts-7000] Interrupting RedBoot - How?

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Subject: Re: [ts-7000] Interrupting RedBoot - How?
From: Eddie Dawydiuk <>
Date: Thu, 4 Jan 2007 17:20:40 -0700 (MST)
Hello,

> Appears what happened is when you did a fconfig and it asked for the
> timeout value you entered "1" for 1 second.  However, that equates to
> .1 second (since these are 100 milisecond units).  I am guessing this
> window is too small and unless you are really quick you miss it.  You
> might try pressing ^c a bunch of times really fast as it boots up.

Even with a timeout of .1 seconds any character pressed prior to the .1
second window would be in the FIFO and would be read. So pressing ctrl+c
when your board first boots would drop you to a redboot prompt.

//Eddie

> If that doesn't work I suggest looking at serialblaster (available on
> the yahoo group files area).  Basically you install jumper JP1 and the
> board boots via serial.  You run serialblaster on your system instead
> of minicom and it sends the board a bootrom and a redboot image.  You
> can then quit out of serialblaster, open minicom and you should be at
> the redboot prompt at which point you can re-run fconfig.
>
> good luck!
>
> - Doug
>
>
> --- tyerslockandblock <> wrote:
>
>> Hi
>>
>> Having accidentally managed to hose the ts-linux kernel on my 7260, I
>> need to restore things to the status quo ante.
>>
>> Naturally (having been a good boy and read the doco :-) I decided to
>> follow the instructions and load the kernel by issuing the
>> appropriate
>> commands in RedBoot.
>>
>> However, in spite of having rebooted a gazillion times, I have still
>> not managed to interrupt RedBoot using ctrl+C to get it to drop into
>> the command line.
>>
>> According to the doco, this has to be done "within 1 second after
>> power up", but even holding down the ctrl and c keys permanently
>> fails
>> to achieve the necessary goal :-(
>>
>> (BTW, I am using HyperTerminal on a PC and have ensured that it is
>> operating in "terminal keys" mode)
>>
>> However what is intriguing is that during the boot sequence, a
>> message
>> is posted saying "Executing boot script in 0.100 seconds - enter ^C
>> to
>> abort". If this is really the case - and it certainly seems so - then
>> the chances of catching the "abort window" are very low.
>>
>> Anyway, I would greatly appreciate any thoughts/help which are kind
>> enough to be offered.
>>
>> Many thank in advance.
>>
>>
>>
>>
>> Yahoo! Groups Links
>>
>>
>>
>>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>


 
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