[U-Boot] Interrupt handler in U-Boot for MIPS based platform

[U-Boot] Interrupt handler in U-Boot for MIPS based platform

[Pandurang Kale]

Hi all,

    I was working on enabling the watchdog timer in the U-Boot for MIPS
based platform. I set up the timer and watchdog. when the timer expires, I
need to kick the watchdog until the user timeout period expires.
I see that for ARM we have do_irq function which gets called when there is
interrupt but I don't see any such mechanism for the MIPS.

  Has any one implemented it for MIPS based platform? If not, any hint to
get it working.

Thanks,
Pandu

[U-Boot] Interrupt handler in U-Boot for MIPS based platform

[Detlev Zundel]

Hi Pandu,

> Hi all,
>
>     I was working on enabling the watchdog timer in the U-Boot for MIPS
> based platform. I set up the timer and watchdog. when the timer expires, I
> need to kick the watchdog until the user timeout period expires.
> I see that for ARM we have do_irq function which gets called when there is
> interrupt but I don't see any such mechanism for the MIPS.
>
>   Has any one implemented it for MIPS based platform? If not, any hint to
> get it working.

Generally we kick the watchdog from various places in the code with
WATCHDOG_RESET().  This way we do not need any interrupts and you should
be seeing watchdog triggers immediately without adding anything more.
Just grep for occurrences of this macro.

Cheers
  Detlev 

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[U-Boot] Interrupt handler in U-Boot for MIPS based platform

[Shinya Kuribayashi]

On 5/27/11 2:44 AM, Pandurang Kale wrote:
>    Has any one implemented it for MIPS based platform? If not, any hint to
> get it working.

https://www.ibm.com/developerworks/mydeveloperworks/blogs/ddou/entry/implementing_mips_interrupts_for_u_boot28?lang=en