[coreboot - Bug #327] MBOX3, OperationRegion (OPRG, SystemMemory, ASLS, 0x2000) causes windows uefi tianocore BSOD ACPI_BIOS_ERROR
Issue #327 has been updated by Pawel Radomychelski.
Matt DeVillier wrote in #note-6:
When set to 0x1000 windows UEFI tianocore mode boots fine
This seems to be a board-specific issue rather than platform or tree-wide issue. The IGD OpRegion spec published by Intel themselves specifies that the reserved region starting at ASLS is 0x2000 in size - see: https://01.org/sites/default/files/documentation/acpi_igd_opregion_spec_0.pd... p16.
Additionally, other SNB/IVB boards (such as google/link and samsung/stumpy) have no issues booting Windows via Tianocore with the correct OpRegion size set.
So, I suspect something else in the x230 ACPI code is overlapping with the IGD OpRegion and causing the BSOD
Thanks for the info and clarification. Is it possible to find out what changed between Coreboot 4.15 and 4.16 and replace the changed files with the ones from 4.15 Branch? Otherwise i am forced still to use CoreBoot 4.15 until the bug is solved....
---------------------------------------- Bug #327: MBOX3, OperationRegion (OPRG, SystemMemory, ASLS, 0x2000) causes windows uefi tianocore BSOD ACPI_BIOS_ERROR https://ticket.coreboot.org/issues/327#change-974
* Author: xinhua wang * Status: New * Priority: Normal * Start date: 2021-12-30 ---------------------------------------- https://review.coreboot.org/c/coreboot/+/27711/7/src/drivers/intel/gma/acpi/...
this line .. OperationRegion (OPRG, SystemMemory, ASLS, 0x2000) the 0x2000 will cause BSOD ACPI_BIOS_ERROR when booting installer, os, etc
When set to 0x1000 windows UEFI tianocore mode boots fine
---Files-------------------------------- dmesg.txt (76.9 KB) results.log (204 KB)
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Pawel Radomychelski