OvmfPkg: Call CcProbe in SecMain.c instead of TsIsEnabled

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3902

TdIsEnabled() uses the CPUID instruction. At this point, exception
handling is not established and a CPUID instruction will generate
a #VC and cause the booting guest to crash.

CcProbe() checks Ovmf work area to return the guest type. So call
of CcProbe() instead of TdIsEnabled() to fix the above issue.

Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>

OvmfPkg/Sec/SecMain.c

@@ -28,6 +28,7 @@
 #include <Library/CpuExceptionHandlerLib.h>
 #include <Ppi/TemporaryRamSupport.h>
 #include <Library/PlatformInitLib.h>
+#include <Library/CcProbeLib.h>
 #include "AmdSev.h"
 
 #define SEC_IDT_ENTRY_COUNT  34
@@ -738,7 +739,7 @@ SecCoreStartupWithStack (
   volatile UINT8        *Table;
 
  #if defined (TDX_GUEST_SUPPORTED)
-  if (TdIsEnabled ()) {
+  if (CcProbe () == CcGuestTypeIntelTdx) {
     //
     // For Td guests, the memory map info is in TdHobLib. It should be processed
     // first so that the memory is accepted. Otherwise access to the unaccepted
@@ -828,7 +829,7 @@ SecCoreStartupWithStack (
   }
 
  #if defined (TDX_GUEST_SUPPORTED)
-  if (TdIsEnabled ()) {
+  if (CcProbe () == CcGuestTypeIntelTdx) {
     //
     // InitializeCpuExceptionHandlers () should be called in Td guests so that
     // #VE exceptions can be handled correctly.