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-rw-r--r--UefiCpuPkg/UefiCpuPkg.dec13
1 files changed, 13 insertions, 0 deletions
diff --git a/UefiCpuPkg/UefiCpuPkg.dec b/UefiCpuPkg/UefiCpuPkg.dec
index 031a2ccd68..12f4413ea5 100644
--- a/UefiCpuPkg/UefiCpuPkg.dec
+++ b/UefiCpuPkg/UefiCpuPkg.dec
@@ -227,6 +227,19 @@
## Specifies timeout value in microseconds for the BSP to detect all APs for the first time.
# @Prompt Timeout for the BSP to detect all APs for the first time.
gUefiCpuPkgTokenSpaceGuid.PcdCpuApInitTimeOutInMicroSeconds|50000|UINT32|0x00000004
+ ## Specifies the number of Logical Processors that are available in the
+ # preboot environment after platform reset, including BSP and APs. Possible
+ # values:<BR><BR>
+ # zero (default) - PcdCpuBootLogicalProcessorNumber is ignored, and
+ # PcdCpuApInitTimeOutInMicroSeconds limits the initial AP
+ # detection by the BSP.<BR>
+ # nonzero - PcdCpuApInitTimeOutInMicroSeconds is ignored. The initial
+ # AP detection finishes only when the detected CPU count
+ # (BSP plus APs) reaches the value of
+ # PcdCpuBootLogicalProcessorNumber, regardless of how long
+ # that takes.<BR>
+ # @Prompt Number of Logical Processors available after platform reset.
+ gUefiCpuPkgTokenSpaceGuid.PcdCpuBootLogicalProcessorNumber|0|UINT32|0x00000008
## Specifies the base address of the first microcode Patch in the microcode Region.
# @Prompt Microcode Region base address.
gUefiCpuPkgTokenSpaceGuid.PcdCpuMicrocodePatchAddress|0x0|UINT64|0x00000005