reactos

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Ahmed Arif 63deca5a96 [ACPI][UEFI] Use bootloader-provided ACPI root pointer in OSL (#8980 )

Fix ACPI table discovery on the UEFI boot path by teaching the ACPI OSL
to use the loader-provided ACPI root table information instead of relying
only on legacy BIOS RSDP scanning:

- Build a synthetic RSDP from the ACPI BIOS configuration node
  populated by the bootloader
- Fallback to the old scan only if that data is unavailable
- Keep full 64-bit physical addresses when mapping ACPI tables
- Improve failure diagnostics if initialization still fails

This lets ACPICA initialize from the UEFI-provided RSDT/XSDT path.
CORE-11954

So QEMU Q35 on UEFI is now able to discover ACPI tables through the loader-
provided root table path, which fixes 0x7B INACCESSIBLE_BOOT_DEVICE bugcheck:

https://github.com/user-attachments/assets/25d4d9c9-4197-496b-84f9-e5642c65809d

2026-07-09 01:40:17 +03:00

acpi

[ACPI][UEFI] Use bootloader-provided ACPI root pointer in OSL (#8980 )

2026-07-09 01:40:17 +03:00

acpi_new

[ACPI_NEW] Minimal to build

2025-06-19 20:32:11 -07:00

isapnp

[ISAPNP] Detect I/O ports at runtime (#7411 )

2024-10-07 16:10:08 +02:00

pci

[REACTOS] Stop using non-conforming swprintf / vswprintf