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by leeter 706 days ago
Intel did a prototype of a multiprocessor UEFI application that would start up cores and UEFI itself does support synchronization on the assumption that applications/bootloaders will start other cores before calling ExitBootServices. However, there are no protocols as of 2.10 (the current spec[1]) that I can find that would bring up another processor. That said searching it can be a bit arcane.

[1] https://uefi.org/specs/UEFI/2.10/index.html
1 comments
LiamPowell 705 days ago
It's part of the PI spec rather than the base spec: https://uefi.org/specs/PI/1.8A/V2_DXE_Boot_Services_Protocol...
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leeter 705 days ago
Interesting, very interesting. Curious that the PI spec doesn't include update dates on the versions. The MP spec was introduced in 1.5 and I have no idea when that was released.
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