I have Windows booting on a KBL CrOS device, and looking at my tree, pretty sure the only change I have that would potentially address that error is adding the pcon value to the IGD ACPI OpRegion header: https://github.com/MattDevo/coreboot/commit/3349065354709c852765555168272469797dd3f6
there were a few others but they've all since been merged upstream On Wed, Apr 25, 2018 at 6:00 PM Alex Feinman <alexfein...@hotmail.com> wrote: > I've built a Coreboot image (from the HEAD) for my custom Kaby Lake board. > The build uses Chrome EC and is based on kblrvp3 mainboard configuration. > Linux runs fine, but when I attempt to install Windows 10 (or boot a > preinstalled Windows image from USB) I instantly get ACPI_BIOS_ERROR > (0xC00000A5). There is a Microsoft document that provides a large amount of > possible reasons for this error, however I can't even narrow it down > because cleverly Windows 10 no longer prints the bug check parameters, at > least not in this case. > > I would appreciate some pointers if possible. > > Thank you > Alex > -- > coreboot mailing list: coreboot@coreboot.org > https://mail.coreboot.org/mailman/listinfo/coreboot
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