Kabylake: FSP modifies AHCI/SATA capabilities

intel / FSP

Intel(R) Firmware Support Package (FSP)

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Kabylake: FSP modifies AHCI/SATA capabilities #33

Open c0d3z3r0 opened 5 years ago

c0d3z3r0 commented 5 years ago

On Kabylake FSP sets CAP.SSS=0 when not at least one bit in SataPortsSpinUp is set. SataPortsSpinUp[x]=1 sets PxCMD.SUD=1.

Is there any reason FSP is disabling a CAP? IMHO it does not make any sense to make this dependent on SataPortsSpinUp, as the OS assumes the AHCI controller does not support this, then.

c0d3z3r0 commented 5 years ago

Ping!

c0d3z3r0 commented 5 years ago

@nate-desimone ping!

c0d3z3r0 commented 4 years ago

@nate-desimone ping!

c0d3z3r0 commented 4 years ago

@nate-desimone ping!

c0d3z3r0 commented 4 years ago

@nate-desimone ping!