[Patch 1/2] UefiCpuPkg: Add comments for PCDs definition.

[Eric Dong <eric.dong@intel.com>]

Cc: Liming Gao <liming.gao@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eric Dong <eric.dong@intel.com>
---
 UefiCpuPkg/UefiCpuPkg.dec | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/UefiCpuPkg/UefiCpuPkg.dec b/UefiCpuPkg/UefiCpuPkg.dec
index 2ddeab4..1f3a992 100644
--- a/UefiCpuPkg/UefiCpuPkg.dec
+++ b/UefiCpuPkg/UefiCpuPkg.dec
@@ -287,10 +287,32 @@
 
   ## Contains the size of memory required when CPU processor trace is enabled.
   # @Prompt The memory size used for processor trace.
+  #  0x0:  4K,
+  #  0x1:  8K,
+  #  0x2:  16K,
+  #  0x3:  32K,
+  #  0x4:  64K,
+  #  0x5:  128K,
+  #  0x6:  256K,
+  #  0x7:  512K,
+  #  0x8:  1M,
+  #  0x9:  2M,
+  #  0xA:  4M,
+  #  0xB:  8M,
+  #  0xC:  16M,
+  #  0xD:  32M,
+  #  0xE:  64M,
+  #  0xF:  128M,
+  #  0x10: ProcTraceMemDisable
+  # @ValidRange  0x80000001 | 0 - 0x10
   gUefiCpuPkgTokenSpaceGuid.PcdCpuProcTraceMemSize|0x10|UINT32|0x60000012
 
   ## Contains the processor trace output scheme when CPU processor trace is enabled.
   # @Prompt The processor trace output scheme.
+  #  0: Single Range output scheme.<BR>
+  #  1: ToPA(Table of physical address) scheme.<BR>
+  #  2: Invalid scheme.<BR>
+  # @ValidRange  0x80000001 | 0 - 2
   gUefiCpuPkgTokenSpaceGuid.PcdCpuProcTraceOutputScheme|0x2|UINT8|0x60000015
 
 [UserExtensions.TianoCore."ExtraFiles"]
-- 
2.10.1.windows.1