search

merge / skulls

pre-built coreboot images and documentation on how to flash them for Thinkpad Laptops
GNU General Public License v3.0
677 stars 65 forks source link

Dump bios for TianoCore from Skulls? #155

Closed PSzczepanski1996 closed 3 years ago

PSzczepanski1996 commented 4 years ago

Heyo, So what I want is to dump bios for compilation of Coreboot with TianoCore (I need Intel Descriptor Firmware and other blobs). What I want to ask, I can safely dump bios while using Coreboot + SeaBIOS installed using Skulls (or - simpy /I use skulls/) from LiveUSB Linux? I need to use Tianocore since all my tripleboot OS'es are installed in EFI mode (before) - Windows 10, Arch, Hackintosh Catalina. I'm just scared that Skulls bios dump can be different than Lenovo bios dump which will lead to brick.

Thanks for advise, though!

PSzczepanski1996 commented 4 years ago

I tried to compile TianoCore using similar config to Skulls, and after hour or two, I got Error 2 (UEFIPAYLOAD.fd error 2), so I probably will give up and wait for ready solution in Skulls/1vyrain.

I failed, but my ThinkPad will not!

freed00m commented 3 years ago

What do you mean by "dump" ?

The IFD can be extracted with ifdtool after you read the whole chip. If you never read the flashchip before it's probably still locked and you will need to do that externally.

PSzczepanski1996 commented 3 years ago

I don't need solution for that time, I know now I have ability to dump data via internal flashing. Gonna close the issue.

freed00m commented 3 years ago

@HoshiYamazaki Not true at all, the Intel Management engine will not allow you to read the whole flash AS IS.

With stock Lenovo x230 bios untouched (not unlocked externally) you will read something but part of the image will be crap.