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ACPI: Support PCIe root port and switches in Windows and Linux
To deal with the broken ECAM on this platform, reuse some existing OS workarounds: - for Windows: "NXPMX6" OEM ID in FADT and split MCFG entries for root port and main config space. - for Linux: "AMAZON" OEM ID + "GRAVITON" OEM Table ID in MCFG. An "AMZN0001" device with _UID matching the RC segment number returns the root port's DBI address in _CRS. Both workarounds filter device > 0 on primary and secondary buses of RP to hide ghost and duplicate devices. The compatibility mode used can be configured in the setup menu. Default is "Auto (NXPMX6 + Single Device)", which selects the NXPMX6 mode when Windows is booted and the classic single device/bus mode for other OSes, since it's the most compatible one. Also move the PCIe and SATA SSDT definitions in DSDT and patch _STA instead to disable the unnecessary controllers. Signed-off-by: Mario Bălănică <[email protected]>
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