Issue #327 has been updated by Matt DeVillier.
> 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.pdf 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 ---------------------------------------- Bug #327: MBOX3, OperationRegion (OPRG, SystemMemory, ASLS, 0x2000) causes windows uefi tianocore BSOD ACPI_BIOS_ERROR https://ticket.coreboot.org/issues/327#change-972 * 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/configure_brightness_levels.asl#28 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) -- You have received this notification because you have either subscribed to it, or are involved in it. To change your notification preferences, please click here: https://ticket.coreboot.org/my/account _______________________________________________ coreboot mailing list -- [email protected] To unsubscribe send an email to [email protected]
