[PATCH 3/8] MdePkg: Add definition of EFI_CC_EVENT_HOB_GUID

["Min Xu" <min.m.xu@intel.com>]

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3853

EFI_CC_EVENT_HOB_GUID is the global ID of a GUIDed HOB used to pass
TDX_DIGEST_VALUE from SEC to a DXE Driver ( This DXE driver will
be introduced in the following commit in this patch-sets ). In that
DXE driver this GUIDed HOB will be parsed and the TDX_DIGEST_VALUE
then will be extracted. After that a EFI_CC_EVENT will be created
based on it.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
---
 MdePkg/Include/Protocol/CcMeasurement.h | 8 ++++++++
 MdePkg/MdePkg.dec                       | 1 +
 2 files changed, 9 insertions(+)

diff --git a/MdePkg/Include/Protocol/CcMeasurement.h b/MdePkg/Include/Protocol/CcMeasurement.h
index 68029e977fac..83eaafaf10a6 100644
--- a/MdePkg/Include/Protocol/CcMeasurement.h
+++ b/MdePkg/Include/Protocol/CcMeasurement.h
@@ -299,4 +299,12 @@ typedef struct {
 
 extern EFI_GUID  gEfiCcFinalEventsTableGuid;
 
+//
+// The Global ID of a GUIDed HOB used to pass a CC_EVENT from a SEC to a TDX DXE Driver.
+//
+#define EFI_CC_EVENT_HOB_GUID \
+  { 0x20f8fd36, 0x6d00, 0x40fb, { 0xb7, 0x04, 0xd1, 0x2c, 0x15, 0x3c, 0x62, 0xeb } }
+
+extern EFI_GUID  gCcEventEntryHobGuid;
+
 #endif
diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
index 1934c9840423..38f01c162e97 100644
--- a/MdePkg/MdePkg.dec
+++ b/MdePkg/MdePkg.dec
@@ -828,6 +828,7 @@
 
   ## Include/Protocol/CcMeasurement.h
   gEfiCcFinalEventsTableGuid     = { 0xdd4a4648, 0x2de7, 0x4665, { 0x96, 0x4d, 0x21, 0xd9, 0xef, 0x5f, 0xb4, 0x46 }}
+  gCcEventEntryHobGuid           = { 0x20f8fd36, 0x6d00, 0x40fb, { 0xb7, 0x04, 0xd1, 0x2c, 0x15, 0x3c, 0x62, 0xeb }}
 
 [Guids.IA32, Guids.X64]
   ## Include/Guid/Cper.h
-- 
2.29.2.windows.2