Re: [coreboot] C720 - ROM file

[Carmelo Ingrao]

Hi Aaron, first thanks to take the time to answer :)

Le 4 févr. 2014 à 16:03, Aaron Durbin  a écrit :
> SeaBIOS was loading correctly until you changed the GBB flags, right?
> And CTRL+L is just not being detected any longer? Can you change the
> GBB flags back and determine if the legacy booting still works?

Yes, before doing mess with the gbb flags, the SeaBIOS was correctly working : I have once installed Fedora on my c720
Now CTRL+L is no longer detected (only a sound out the speakers)

Yes I can change the GBB flags, but which one do I have to set ?
> > I have read online it may be caused by the wipe of SeaBIOS part in the
> > ROM.
>
> It's possible. Since you are in dev mode, could you run the following?
> ' iotools mmio_dump 0xffc00000 0x200000 -b | hexdump -C' It will dump
> the contents of legacy portion of the flash. We'd know for certain if
> the area is wiped.

I have copy/paste your command, and here is what I obtain :

localhost / # iotools mmio_dump 0xffc00000 0x200000 -b | hexdump -C
bash: iotools: command not found

(before doing that I have entered « shell » and « sudo bash »

Thanks !

Carmelo

C720 - ROM file

[Aaron Durbin]

On Tue, Feb 4, 2014 at 9:12 AM, Carmelo Ingrao  wrote:
> Hi Aaron, first thanks to take the time to answer :)
>
> Le 4 févr. 2014 à 16:03, Aaron Durbin  a écrit :
> > SeaBIOS was loading correctly until you changed the GBB flags, right?
> > And CTRL+L is just not being detected any longer? Can you change the
> > GBB flags back and determine if the legacy booting still works?
>
> Yes, before doing mess with the gbb flags, the SeaBIOS was correctly working : I have once installed Fedora on my c720
> Now CTRL+L is no longer detected (only a sound out the speakers)
>
> Yes I can change the GBB flags, but which one do I have to set ?

I was thinking changing them back to 0x00, but it sounds like you
installed Fedora over ChromeOS? And it was working until you changed
the gbb flags?
> > > I have read online it may be caused by the wipe of SeaBIOS part in the
> > > ROM.
> >
> > It's possible. Since you are in dev mode, could you run the following?
> > ' iotools mmio_dump 0xffc00000 0x200000 -b | hexdump -C' It will dump
> > the contents of legacy portion of the flash. We'd know for certain if
> > the area is wiped.
>
> I have copy/paste your command, and here is what I obtain :
>
> localhost / # iotools mmio_dump 0xffc00000 0x200000 -b | hexdump -C
> bash: iotools: command not found

Sorry. I thought you were booting ChromeOS in dev mode (I'm just used
to using iotools). Try this:

dd iflag=sync if=/dev/mem bs=2M skip=2046 count=1 | hexdump -C

-Aaron