[U-Boot] [PATCH 1/3] common/cmd_rsmode.c: add imx reset mode command

Wolfgang Denk wd at denx.de
Mon Jun 4 21:52:59 CEST 2012


Dear Eric Nelson,

In message <4FC4DC4E.9030007 at boundarydevices.com> you wrote:
> 
> Writing a 4 to the WDOG_BASE register enables the watchdog with a 1/2s delay.
> I think there should be a delay or while(1) loop afterwards though. It appears
> that the reset_cpu() routine will return.

I recommend NOT messing with the watchdog for any unrelated functions.

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.

Best regards,

Wolfgang Denk

-- 
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Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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