Branch: refs/heads/master
Home: https://github.com/tianocore/edk2
Commit: 00b8bf7eda00fb6f0197d3968b6078cfdb4870fa
https://github.com/tianocore/edk2/commit/00b8bf7eda00fb6f0197d3968b6078cfdb4870fa
Author: Cole, Deric <[email protected]>
Date: 2020-06-23 (Tue, 23 Jun 2020)
Changed paths:
M UefiCpuPkg/SecCore/Ia32/ResetVec.nasmb
Log Message:
-----------
UefiCpuPkg/SecCore: Add pre-memory AP vector
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=2776
Add a vector at 0xFF000 (0xFFFFF000) that can be used by Init-SIPI-SIPI
to start an AP before memory is initialized. This vector jumps into the
same SEC entry point as the ordinary reset vector, with a special value
of "AP" in the DI register. The platform-specific SEC code is expected
to check for that value and take a different path for APs, if this
feature is supported by the platform.
Reviewed-by: Eric Dong <[email protected]>
Reviewed-by: Ray Ni <[email protected]>
Cc: Laszlo Ersek <[email protected]>
Signed-off-by: Deric Cole <[email protected]>
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