Dear Sachin Rane,
In message 73FA539107892C4C8C7A5ACA10C161C85BE107@MX2.AlphionCorp.local you wrote:
I am using u-boot and linux kernel on our custom PPC440gx board. The board was booting without any issue.
The board started rebooting while booting in linux kernel after enabled the watchdog timer in u-boot by defining 'CONFIG_WATCHDOG'.
That is to be expected unless you have working watchdog support in your Linux kernel, too.
I have observed that the board gets reset while booting in Linux.
Yes, the watchdog is supposed to do exactly that. So everything is indeed working as expected.
I followed the discussion available on: http://osdir.com/ml/boot-loaders.u-boot/2001-07/msg00121.html
Ouch. That is a *bit* old, it deems.
I modified the code given in above link to run it on ppc440gx processor.
Why don't you use the existing code for example for 440EPx from our kernel tree?
I have written a function 'reset_watchdog()' in kernel which will reset the Watchdog Timer (same as available in u-boot) and called in 'timer_interrupt()' of /arch/ppc/kernel/time.c' But the function is not giving any effect. The board is still getting rebooted.
arch/ppc/ ? arch/ppc/ is dead. It has been removed from the Linux kernel tree a long time ago.
Best regards,
Wolfgang Denk