Currently not all fixed MMIO ranges are advertised to the resource
allocator. This is not an issue as long bottom-up allocation is
used and as long as only small PCI BARs are present on the system.
Properly advertise all fixed MMIO ranges decoded by the PCH:
- RCBA
- TXT private
- TXT reserved
- TPM TIS
- LGMR
- HPET
Also remove subtractive decoding from IOAPIC and SPI ROM. Comments
indicate that there's an issue with the OS, but newer platforms also
don't set it to subtractive. No issue was seen with EDK2 payload and
Linux 6.8.8. As a side effect IOAPIC and SPI ROM are now marked as
reserved in e820, which should help payloads not aware of IOAPIC
and SPI ROM to behave more properly.
TEST=Still boots on Lenovo X220. No issues seen in coreboot or Linux.
New e820 reserved ranges:
[DEBUG] 15. 00000000fec00000-00000000fec00fff: RESERVED
[DEBUG] 16. 00000000fed00000-00000000fed00fff: RESERVED
[DEBUG] 18. 00000000fed1c000-00000000fed3ffff: RESERVED
[DEBUG] 19. 00000000fed45000-00000000fed91fff: RESERVED
[DEBUG] 20. 00000000ff000000-00000000ffffffff: RESERVED
Change-Id: I9c251a8c4a4403c5dc0ad535769d8d893dc64a05
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/91040
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Alicja Michalska <ahplka19@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
255fcb14ba