omap3evm does not boot after 2.6.38-rc1

omap3evm does not boot after 2.6.38-rc1

[Sung Hee Park]

Hi all,

I'm having a problem with booting the linux kernel on my omap3evm. It
halts after saying "Uncompressing Linux... done, booting the kernel."
on boot. I had a similar problem with 2.6.37, but after changing the
name of the serial port devices from /dev/ttyS* to /dev/ttyO*, it
worked. Does anyone experiencing this problem again with 2.6.38
kernels? Please let me know if you have any idea what might have gone
wrong.

Regards,
Sung Hee Park

Re: omap3evm does not boot after 2.6.38-rc1

[Tony Lindgren]

* Sung Hee Park <shpark7@stanford.edu> [110216 14:18]:
> Hi all,
> 
> I'm having a problem with booting the linux kernel on my omap3evm. It
> halts after saying "Uncompressing Linux... done, booting the kernel."
> on boot. I had a similar problem with 2.6.37, but after changing the
> name of the serial port devices from /dev/ttyS* to /dev/ttyO*, it
> worked. Does anyone experiencing this problem again with 2.6.38
> kernels? Please let me know if you have any idea what might have gone
> wrong.

If you have 2.6.38-rc1 booting, maybe try running git bisect on it
to find out where it breaks?

Tony

RE: omap3evm does not boot after 2.6.38-rc1

[Anand Gadiyar]

Tony Lindgren wrote:
> * Sung Hee Park <shpark7@stanford.edu> [110216 14:18]:
> > Hi all,
> >
> > I'm having a problem with booting the linux kernel on my omap3evm. It
> > halts after saying "Uncompressing Linux... done, booting the kernel."
> > on boot. I had a similar problem with 2.6.37, but after changing the
> > name of the serial port devices from /dev/ttyS* to /dev/ttyO*, it
> > worked. Does anyone experiencing this problem again with 2.6.38
> > kernels? Please let me know if you have any idea what might have gone
> > wrong.
>
> If you have 2.6.38-rc1 booting, maybe try running git bisect on it
> to find out where it breaks?
>
> Tony

Enable CONFIG_EARLY_PRINTK, and add the word earlyprintk to your bootargs.
This should help get some prints on the debug UART which might help
debug this.

- Anand

Re: omap3evm does not boot after 2.6.38-rc1

[Sung Hee Park]

Thanks for your suggestion. After enabling the early printk option, I
figured out that sched_clock_poll() was causing the problem, which can
be fixed with the following patch.

http://www.spinics.net/lists/arm-kernel/msg111325.html

Sung Hee


On Wed, Feb 16, 2011 at 8:12 PM, Anand Gadiyar <gadiyar@ti.com> wrote:
> Tony Lindgren wrote:
>> * Sung Hee Park <shpark7@stanford.edu> [110216 14:18]:
>> > Hi all,
>> >
>> > I'm having a problem with booting the linux kernel on my omap3evm. It
>> > halts after saying "Uncompressing Linux... done, booting the kernel."
>> > on boot. I had a similar problem with 2.6.37, but after changing the
>> > name of the serial port devices from /dev/ttyS* to /dev/ttyO*, it
>> > worked. Does anyone experiencing this problem again with 2.6.38
>> > kernels? Please let me know if you have any idea what might have gone
>> > wrong.
>>
>> If you have 2.6.38-rc1 booting, maybe try running git bisect on it
>> to find out where it breaks?
>>
>> Tony
>
> Enable CONFIG_EARLY_PRINTK, and add the word earlyprintk to your bootargs.
> This should help get some prints on the debug UART which might help
> debug this.
>
> - Anand
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