Re: Watchdog Timer with x86 processor

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Hi Frederick,

On Mon, 2020-01-06 at 13:27 +0000, Frederick Gotham wrote:
> I have an embedded Linux project with an x86_64 CPU.
> 
> I'm looking through the Barebox documentation and it seems that
> there's a lot 
> of support for ARM, but I'm trying to find something that will work
> with my 
> Intel processor.
> 
> When I go into the "menuconfig", I see the following symbols:
> 
>     WATCHDOG
>     RAVE_SP_WATCHDOG
>     WATCHDOG_AR9344
>     WATCHDOG_BCM2835
>     WATCHDOG_DAVINCI
>     WATCHDOG_DW
>     WATCHDOG_IMX
>     WATCHDOG_IMX_RESET_SOURCE
>     WATCHDOG_JZ4740
>     WATCHDOG_MXS28
>     WATCHDOG_OMAP
>     WATCHDOG_ORION
>     WATCHDOG_POLLER

Your list is interesntigly missing WATCHDOG_EFI, which can be used on
x86_64 machines.

> Right now the only one that I have enabled is:WATCHDOG. I think the
> Intel 
> Watchdog timer is referred to as iTCO_wdt, but I don't see it in the
> above 
> list.
> Is it possible to use the Barebox bootloader with a watchdog timer on
> an x86 
> CPU?
https://www.barebox.org/doc/latest/boards/efi.html?highlight=watchdog#u-efi-watchdog

is probably the relevant documentation for this, the watchdog for efi
is implemented in drivers/watchdog/efi_wdt.c.

Regards,
Rouven



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