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intel / FSP

Intel(R) Firmware Support Package (FSP)
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FSP spec: debug registers #85

Open ArthurHeymans opened 2 years ago

ArthurHeymans commented 2 years ago

FSP spec does not document that debug registers cannot be used. Some firmwares use debug register to catch NULL dereferencing which a lot of FSP releases do. This hangs the system as FSP has no exception handler for that.

6d6178667269747a commented 2 years ago

@ArthurHeymans , How do you know that the FSP has a NULL pointer dereference error? Currently I'm facing a problem with my RocketLake FSP too. I enter FSP-M at entry but it didn't return.