[coreboot] T60 with ATI has black screen

Sun Jun 28 17:50:50 CEST 2015

So, can someone remind me, is there no native graphics for the T60? I could
have sworn we got there last time we met. Or even in Berlin.

ron

On Sun, Jun 28, 2015 at 7:52 AM Richard Simpson <coreboot at huskydog.org.uk>
wrote:

> Carl-Daniel,
>
> I am back in the factory BIOS.  I have gathered the data for Łukasz and
> can upload it as soon as you send me a location.
>
> For some reason I couldn't get the option ROM via the Linux kernel, but
> only from the mapped memory.  Basically, there didn't seem to be any rom
> file in the relevant /sys directory.  See below:
>
> [rsimpson at newpercy Libreboot]$ lspci -tv
> -[0000:00]-+-00.0  Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and
> 945GT Express Memory Controller Hub
>            +-01.0-[01]----00.0  Advanced Micro Devices, Inc. [AMD/ATI]
> RV515/M54 [Mobility Radeon X1400]
>            +-1b.0  Intel Corporation NM10/ICH7 Family High Definition
> Audio Controller
>            +-1c.0-[02]----00.0  Intel Corporation 82573L Gigabit
> Ethernet Controller
>            +-1c.1-[03]----00.0  Intel Corporation PRO/Wireless 3945ABG
> [Golan] Network Connection
>            +-1c.2-[04-0b]--
>            +-1c.3-[0c-13]--
>            +-1d.0  Intel Corporation NM10/ICH7 Family USB UHCI Controller
> #1
>            +-1d.1  Intel Corporation NM10/ICH7 Family USB UHCI Controller
> #2
>            +-1d.2  Intel Corporation NM10/ICH7 Family USB UHCI Controller
> #3
>            +-1d.3  Intel Corporation NM10/ICH7 Family USB UHCI Controller
> #4
>            +-1d.7  Intel Corporation NM10/ICH7 Family USB2 EHCI Controller
>            +-1e.0-[15-18]----00.0  Texas Instruments PCI1510 PC card
> Cardbus Controller
>            +-1f.0  Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge
>            +-1f.1  Intel Corporation 82801G (ICH7 Family) IDE Controller
>            +-1f.2  Intel Corporation 82801GBM/GHM (ICH7-M Family) SATA
> Controller [AHCI mode]
>            \-1f.3  Intel Corporation NM10/ICH7 Family SMBus Controller
> [rsimpson at newpercy Libreboot]$ ls /sys/devices/pci0000\:00/0000\:00\:01.0/
> 0000:00:01.0:pcie01   config                    driver
> local_cpus  pci_bus  resource          vendor
> 0000:00:01.0:pcie08   consistent_dma_mask_bits  enable         modalias
>    power    subsystem
> 0000:01:00.0          d3cold_allowed            firmware_node  msi_bus
>    remove   subsystem_device
> broken_parity_status  device                    irq            msi_irqs
>    rescan   subsystem_vendor
> class                 dma_mask_bits             local_cpulist  numa_node
>   reset    uevent
> [rsimpson at newpercy Libreboot]$
>
> I'll try switching back to coreboot later today.
>
> Cheers,
>
>         Richard
>
> On 28/06/15 13:45, Carl-Daniel Hailfinger wrote:
> > Hi Richard,
> >
> > On 28.06.2015 12:58, Richard Simpson wrote:
> >> I have to say that knowing that you have the same T60 and that it is
> >> working is a big moral boost!
> >
> > Imagine how I felt when it happened to me. Fortunately that was at a
> > coreboot developer meeting and we had the tools to recover in case it
> > wouldn't have worked.
> >
> >
> >> Yes, the VGA port is working.
> >>
> >> Can you possibly expand on your instructions below?
> >>
> >> 1) You suggest that I patch the option ROM myself.  Where would I find
> >> instructions on how to do this?
> >
> > I had hoped that the option ROM patching was straightforward, e.g.
> > having LVDS data or somesuch in there. Comparing hexdumps of a
> > memory-extracted and a biosimage-extracted option ROM showed me that
> > while the differences are clearly visible, their meaning is not obvious
> > (it's not EDID). So this method is probably not going to fly.
> >
> >
> >> 2) If I decide that I need to extract it from a running system then I
> >> presume that I need to re-flash the factory BIOS.  Can I just do this
> >> with the same flashrom command that I used to flash coreboot?
> >
> > You can do this with the same flashrom command you used to flash the
> > image a second time. Please don't use bucts for flashing back from
> > coreboot to factory BIOS, you only need it in the BIOS->coreboot
> direction.
> > That said, I think Vladimir Serbinenko (phcoder) had a trick on how to
> > modify the original BIOS so that bucts wouldn't be needed any more in
> > either direction.
> >
> > Łukasz Dmitrowski is one of our GSoC students and part of his project is
> > to try to make such stuff easier in the future. He needs data for that,
> > though.
> > Richard, could you please collect the following data (as root) from the
> > system while it's running the factory BIOS?
> > lspci -nnvvvxxxx
> > dmidecode
> > video BIOS via both extraction methods (please make sure that we can
> > find out which is which)
> > superiotool -deV
> > dmesg
> > /var/log/Xorg.0.log (name may be a bit different, I want a log file from
> > Xorg running on the machine while the factory BIOS is active)
> > flashrom dump of the factory BIOS
> >
> > Please don't send that data to the mailing list, I'll provide some space
> > for you to upload it.
> >
> >
> >> 3) On this page (http://www.coreboot.org/VGA_support) two ways of
> >> getting the video BIOS from a running system are listed ('Retrieval via
> >> Linux kernel' and 'Extraction from mapped memory').  Does it matter
> >> which one I try?
> >
> > AFAICS the images you get should be identical. Better check them to make
> > sure.
> >
> >
> >> 4) Can you be a lot more specific about what I should do about the
> checksum?
> >
> > Either let SeaBIOS ignore the checksum:
> > # cbfstool build/coreboot.rom add-int -i 0 -n etc/optionroms-checksum
> > Or you correct the checksum of the option ROM itself. IIRC there is some
> > tool to do that, but I coudln't find it in my bash history.
> >
> >
> >> Apologies if all these instructions are in the Wiki and I have been too
> >> dumb to find them.
> >
> > Not sure if all of this is in the wiki. If you think anything is
> > missing, please tell me so I can add it.
> >
> > Regards,
> > Carl-Daniel
> >
> >
> >> On 27/06/15 23:19, Carl-Daniel Hailfinger wrote:
> >>> On 27.06.2015 23:39, Richard Simpson wrote:
> >>>> I have finally successfully flashed the BIOS on my T60 with coreboot.
> >>>> Sadly, my ATI controlled screen remains completely black.
> Fortunately I
> >>>> can still get in via ssh.  Here is what I can deduce so far.+
> >>> AFAICS you have exactly the same T60 as I have.
> >>>
> >>>
> >>>> lspci says:
> >>>> 01:00.0 0300: 1002:7145 (prog-if 00 [VGA controller])
> >>>> [...]
> >>>> The vgabios which I extracted from the factory bios
> >>> Ah yes. Bad idea. AFAIK the factory BIOS patches the VGA optionrom at
> >>> runtime with the correct values for the LVDS panel. This means you
> >>> either have to patch the VGA optionrom yourself or you have to extract
> >>> the VGA optionrom from the memory of the running system. If you extract
> >>> it from memory, please note that the runtime patching causes the
> >>> checksum to be incorrect, and you either have to fix the checksum or
> >>> tell SeaBIOS to ignore the checksum.
> >>>
> >
> >
>
>
> --
> coreboot mailing list: coreboot at coreboot.org
> http://www.coreboot.org/mailman/listinfo/coreboot
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