Dear Sachin,
In message 73FA539107892C4C8C7A5ACA10C161C85BE0E6@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