audk/UefiCpuPkg/Library
Leo Duran 4c0f6e349d UefiCpuPkg/MpInitLib: Skip reading PlatformId on AMD processors.
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2556

This patch uses CPUID signature check to skip reading the PlatformId MSR,
which is not implemented on AMD processors.

The PlatformId is used for loading microcode patches, which is also not
supported and AMD-based platforms. To mitigate the PlatformId dependency,
PcdCpuMicrocodePatchAddress and PcdCpuMicrodePatchRegionSize must be set
to 0 (default value), in order to bypass microcode loading code paths.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Leo Duran <leo.duran@amd.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2020-03-02 05:47:06 +00:00
..
BaseUefiCpuLib UefiCpuPkg: Replace BSD License with BSD+Patent License 2019-04-09 10:58:28 -07:00
BaseXApicLib UefiCpuPkg: Update code to include register definitions from MdePkg 2019-08-09 08:52:09 +08:00
BaseXApicX2ApicLib UefiCpuPkg: Update code to include register definitions from MdePkg 2019-08-09 08:52:09 +08:00
CpuCommonFeaturesLib UefiCpuPkg/RegisterCpuFeaturesLib: Delete CPU_FEATURE_[BEFORE|AFTER] 2020-02-14 03:15:00 +00:00
CpuExceptionHandlerLib UefiCpuPkg/Smm: Fix various typos 2020-02-10 22:30:07 +00:00
CpuTimerLib UefiCpuPkg: Adding a new TSC library by using CPUID(0x15) TSC leaf 2019-08-21 21:36:56 +08:00
MpInitLib UefiCpuPkg/MpInitLib: Skip reading PlatformId on AMD processors. 2020-03-02 05:47:06 +00:00
MpInitLibUp UefiCpuPkg/MpInitLibUp: Add MpInitLibStartupAllCPUs API. 2019-07-29 09:25:20 +08:00
MtrrLib UefiCpuPkg: Update code to include register definitions from MdePkg 2019-08-09 08:52:09 +08:00
PlatformSecLibNull UefiCpuPkg: Replace BSD License with BSD+Patent License 2019-04-09 10:58:28 -07:00
RegisterCpuFeaturesLib UefiCpuPkg RegisterCpuFeaturesLib: Match data type and format specifier 2020-02-19 05:36:42 +00:00
SecPeiDxeTimerLibUefiCpu UefiCpuPkg: Replace BSD License with BSD+Patent License 2019-04-09 10:58:28 -07:00
SmmCpuFeaturesLib UefiCpuPkg/Smm: Fix various typos 2020-02-10 22:30:07 +00:00
SmmCpuPlatformHookLibNull UefiCpuPkg: Replace BSD License with BSD+Patent License 2019-04-09 10:58:28 -07:00