Dear Sachin,
In message <73fa539107892c4c8c7a5aca10c161c85be...@mx2.alphioncorp.local> you
wrote:
>
> In the file 'include/watchdog.h', it has been mentioned that:
> 8<----------------------------------------------------------
> #if defined(CONFIG_HW_WATCHDOG) && defined(CONFIG_WATCHDOG)
> #error "Configuration error: CONFIG_HW_WATCHDOG and CONFIG_WATCHDOG
> can't be used together."
> #endif
> ---------------------------------------------------------->8
>
> It means I can't enable flags CONFIG_HW_WATCHDOG & CONFIG_WATCHDOG
> together.
> Am I right?
Yes, you are reading the C code correctly.
> I want to use Software version of Watchdog (CONFIG_WATCHDOG).
There is no such thing as a "Software version of Watchdog" in U-Boot.
CONFIG_WATCHDOG is exlained in the README. It refers to a platform
specific watchdog that is part of the processor itself.
CONFIG_HW_WATCHDOG (I admit that the name is a bit misleading) refers
to using an external watchdowg, i. e. implemented using (additional)
hardware.
> If yes then what make the Watchdog resets inside 'serial_getc_dev()'
> while the code is being being executed in infinite loop.
> (The loop appears infinite if user doesn't press any key)
Nothing... Seems you spotted a potential problem. Potential, as so
far no 4xx system uses CONFIG_WATCHDOG.
I suggest you submit a patch?
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: w...@denx.de
It is common sense to take a method and try it. If it fails, admit it
frankly and try another. But above all, try something.
- Franklin D. Roosevelt
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