[coreboot] Trace MMIO Read/Write

[Joseph Smith]

On Wed, 4 Mar 2009 20:44:38 -0700, "Myles Watson" <mylesgw at gmail.com>
wrote:
> 
> 
>> -----Original Message-----
>> From: coreboot-bounces+mylesgw=gmail.com at coreboot.org [mailto:coreboot-
>> bounces+mylesgw=gmail.com at coreboot.org] On Behalf Of Joseph Smith
>> Sent: Wednesday, March 04, 2009 6:13 PM
>> To: Patrick Georgi; coreboot
>> Subject: Re: [coreboot] Trace MMIO Read/Write
>>
>>
>>
>>
>> On Wed, 04 Mar 2009 17:48:55 -0500, Joseph Smith <joe at settoplinux.org>
>> wrote:
>> >
>> >
>> >
>> > On Wed, 04 Mar 2009 17:37:50 -0500, Joseph Smith <joe at settoplinux.org>
>> > wrote:
>> >>
>> >>
>> >>
>> >> On Wed, 04 Mar 2009 23:27:07 +0100, Patrick Georgi
>> >> <patrick at georgi-clan.de>
>> >> wrote:
>> >>> Am 04.03.2009 23:23, schrieb Joseph Smith:
>> >>>> Hello,
>> >>>> Is there anyway to trace (capture) reads and writes to a mmio space
>> in
>> >>>> Linux? A utility program maybe?
>> >>>>
>> >>> I think that's what the renouveau project does, so they should have
> a
>> >>> tool for that.
>> >>> It should work by mapping the mmio area away, then catching all
>> > accesses
>> >>> before passing them trough.
>> >>>
>> >>>
>> >> Thanks Patrick, I will check it out. Does it catch reads as well as
>> >> writes?
>> >>
>> > Ahhh, thanks again Patrick!
>> >
>> > http://nouveau.freedesktop.org/wiki/MmioTrace
>> >
>> hmmm :-(
>> I need to do this on a older kernel 2.6.10 and mmiotrace does not
> support
>> older kernels....
>>
>> Any other suggestions?
> 
> Does it run in a simulator or an emulator?  SimNow or Qemu could log them
> for you.
> 
Can they simulate a Intel onboard graphics adapter?

-- 
Thanks,
Joseph Smith
Set-Top-Linux
www.settoplinux.org