Huzzah, it works! My T60 with ATI graphics is now booting coreboot and SeaBIOS and I have BUCTS set back to 0.
Thank you, Carl-Daniel, for your prompt assistance. I can now proceed to install my final operating system. I bought a T60 because I read that it was one of the easiest coreboot laptops. I dread to think how I would have managed with a difficult one :-) On 28/06/15 15:51, Richard Simpson 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@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@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@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: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
