I have almost tried everything these days trying to boot Windows 10 using T440p with coreboot, but still haven't succeed.
I had created my Windows 10 installer usb by writing the en_windows_10_business_editions_version_1909_updated_jan_2020_x64_dvd_e9cb5542.iso to usb drive through Rufus, and checked this usb works on a T420 with coreboot. But this usb does not work on T440p.
I have tried SeaBIOS, Tianocore, and with/without VGA BIOS but still not work.
When using SeaBIOS without VGA BIOS, I can see a loading bar at the bottom but then hanging there.
When using SeaBIOS with VGA BIOS, the backlight is on but the screen shows nothing.
I tried extract data.vbt from vendor BIOS and replaced the one from source with it, still not work.
I was wondering is my hardware different from others' T440p? Then I tried cherry-pick this patch (git fetch
https://review.coreboot.org/coreboot refs/changes/90/30890/10 && git cherry-pick FETCH_HEAD) and using autoport to generate source of my T440p. Then I compared it with masters' source, but there is not much difference.
I tried changed CPU and RAM but still not work.
Since I make a fresh install of Windows on the T440p, I tried install it on T420 and then change the hard disk to T440p. It still does not work.
When I use Tianocore, the circle stopped spin and hangs at "Preparing Automatic Repair":
Could anyone help me with this? Could anyone successfully using T440p to boot Windows share the steps you did it and your config or your coreboot.rom (last 4MB)?