svn commit: r244758 - head/sys/arm/broadcom/bcm2835

Tadashi Takahashi tadashi.takahashi at
Fri Dec 28 16:55:32 UTC 2012

Hi developers,

I also believe the stability is much better than before.

I did below operations on both RPI-B 256MB and RPI-B 512MB systems.  
There is no core dump nor freeze.
- check out src and ports tree by using cvs over network.
- self buildworld is still running.
- port build without trouble - perl, apache, mysql, bash ...

Thank you for excellent job,
Tadashi Takahashi

-----Original Message-----
From: owner-freebsd-arm at [mailto:owner-freebsd-arm at]
On Behalf Of Stephen Hurd
Sent: Saturday, December 29, 2012 12:33 AM
To: Oleksandr Tymoshenko
Cc: freebsd-arm at
Subject: Re: svn commit: r244758 - head/sys/arm/broadcom/bcm2835

Oleksandr Tymoshenko wrote:
> Author: gonzo
> Date: Fri Dec 28 01:38:43 2012
> New Revision: 244758
> URL:
> Log:
>   Fix event timer on Raspberry Pi
>   - Disable interrupt when updating compare value in order to
>      make this operation atomical
>   - Increase minimum period for event timer. Systimer on BCM2835
>       is compare timer, so if minimum period is too small it might
>       be less then fraction of time between "read current value" and
>       "set compare timer" operations. It means that when timer is armed
>       actual counter value is more then compare value and it will take
>       whole cycle (~32sec for 1MHz timer) to fire interrupt.
>   Submitted by:	Daisuke Aoyama <aoyama at>

This seems to have fixed the long hang issue I was having... package
building ran overnight without the clock losing time or any hangs occuring.

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