[U-Boot] [PATCH 1/3] common/cmd_rsmode.c: add imx reset mode command
Wolfgang Denk
wd at denx.de
Thu Jun 21 22:57:11 CEST 2012
Dear Eric Nelson,
In message <4FCD17A5.6030705 at boundarydevices.com> you wrote:
>
> > The function of the watchdog should be reserved for auch systems who
> > need it to implement security related functions; messing with it in
> > unrelated places (like setting it into unexpected states and or
> > timeouts) may cause undefined behaviour on such systems.
> >
> > Don't do it.
> >
>
> My comment is that reset_cpu() should probably not return, and
> at the moment it will. The minimum WDT timeout value is 1/2 second, so
> execution will continue for some time less than that.
>
> It seems to me that this might be a bad thing, allowing unexpected
> execution of commands in a script after the execution of the 'reset'
> command.
>
> If I understand your comment, you're saying that reset_cpu() should
> not be implemented using the watchdog.
>
> Is that right?
No, that was not my intention. I must have missed the fact that you
were talking about reset_cpu() and only this function. Please ignore
me.
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
"In Christianity neither morality nor religion come into contact with
reality at any point." - Friedrich Nietzsche
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