Re: Linux 2.6 8xx kernel booting vs watchdog

Re: Linux 2.6 8xx kernel booting vs watchdog

[Marcelo Tosatti]

On Wed, Jan 12, 2005 at 02:41:18PM -0500, Povolotsky, Alexander wrote:
> Hi,
> 
> I wonder if someone could help me with answering couple of my questions:
> 
> How watchdog resetting is handled for PPC 
> in Linux 2.6 on the kernel level ?
> Does one need to add code for it or is it supported "off the shelf" ?

It is not supported off the shelf. 

We (Cyclades) have a timer to periodically touch the watchdog on boot, and afterwards
a watchdog driver which gets periodically written by a userspace daemon. 

I can send a patch if you wish.

> Is "early printk" supported for PPC on 2.6 ?
> If yes - how and where it could be enabled?

Not sure.

Linux 2.6 8xx kernel booting vs watchdog

[Povolotsky, Alexander]

Hi,

I wonder if someone could help me with answering couple of my questions:

How watchdog resetting is handled for PPC 
in Linux 2.6 on the kernel level ?
Does one need to add code for it or is it supported "off the shelf" ?

Is "early printk" supported for PPC on 2.6 ?
If yes - how and where it could be enabled?

Thanks,
Alex

Linux 2.6 8xx kernel booting vs watchdog

[pevnev]

Hi,

I managed to get through kernel decompression by putting enough watchdog resets calls in zlib functions (the watchdog can not be shut off ).
- now I am stuck at booting the kernel ...
- cursor "blinks" quite for a long time after I see the last printout in load_kernel(), that is: "Now booting the kernel"  - 
I suspect it is watchdog issue again ...

How watchdog resetting is handled for 82xx (I think 8xx will be similar ?) in Linux 2.6 on the kernel level ?
Does one need to add code for it or is it supported "off the shelf" ?

Is "early printk" supported for 82xx on 2.6 (I think 8xx will be similar ?)?
If yes - how and where it could be enabled?

Thanks,
Alex


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