REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3678

To simplify the implementation the variable Name/GUID has been
changed to "FspNvsBuffer" and gFspNvsBufferVariableGuid
regardless it stores the data from FSP_NON_VOLATILE_STORAGE_HOB2
or FSP_NON_VOLATILE_STORAGE_HOB.

Cc: Sai Chaganty <rangasai.v.chaganty@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Cc: Heng Luo <heng.luo@intel.com>
Signed-off-by: Chasel Chiu <chasel.chiu@intel.com>
---
 Platform/Intel/TigerlakeOpenBoardPkg/FspWrapper/Library/PeiFspPolicyInitLib/PeiFspPolicyInitLib.c   | 21 ++++++++++++++++++---
 Platform/Intel/TigerlakeOpenBoardPkg/FspWrapper/Library/PeiFspPolicyInitLib/PeiFspPolicyInitLib.inf |  1 +
 Platform/Intel/TigerlakeOpenBoardPkg/TigerlakeURvp/OpenBoardPkg.dsc                                 |  3 +++
 3 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/Platform/Intel/TigerlakeOpenBoardPkg/FspWrapper/Library/PeiFspPolicyInitLib/PeiFspPolicyInitLib.c b/Platform/Intel/TigerlakeOpenBoardPkg/FspWrapper/Library/PeiFspPolicyInitLib/PeiFspPolicyInitLib.c
index fc523e93d1..938b74e5d8 100644
--- a/Platform/Intel/TigerlakeOpenBoardPkg/FspWrapper/Library/PeiFspPolicyInitLib/PeiFspPolicyInitLib.c
+++ b/Platform/Intel/TigerlakeOpenBoardPkg/FspWrapper/Library/PeiFspPolicyInitLib/PeiFspPolicyInitLib.c
@@ -9,7 +9,9 @@
 #include <Library/FspWrapperApiLib.h>
 #include <Library/BaseMemoryLib.h>
 #include <Library/MemoryAllocationLib.h>
+#include <Library/PeiLib.h>
 #include <Ppi/FspmArchConfigPpi.h>
+#include <PolicyUpdateMacro.h>
 
 VOID
 EFIAPI
@@ -70,9 +72,11 @@ SiliconPolicyDonePreMem(
 )
 {
   EFI_STATUS                   Status;
+  UINTN                        FspNvsBufferSize;
+  VOID                         *FspNvsBufferPtr;
 #if FixedPcdGet8(PcdFspModeSelection) == 0
-  FSPM_ARCH_CONFIG_PPI                  *FspmArchConfigPpi;
-  EFI_PEI_PPI_DESCRIPTOR                *FspmArchConfigPpiDesc;
+  FSPM_ARCH_CONFIG_PPI         *FspmArchConfigPpi;
+  EFI_PEI_PPI_DESCRIPTOR       *FspmArchConfigPpiDesc;
 
   FspmArchConfigPpi = (FSPM_ARCH_CONFIG_PPI *) AllocateZeroPool (sizeof (FSPM_ARCH_CONFIG_PPI));
   if (FspmArchConfigPpi == NULL) {
@@ -80,7 +84,6 @@ SiliconPolicyDonePreMem(
     return EFI_OUT_OF_RESOURCES;
   }
   FspmArchConfigPpi->Revision            = 1;
-  FspmArchConfigPpi->NvsBufferPtr        = NULL;
   FspmArchConfigPpi->BootLoaderTolumSize = 0;
 
   FspmArchConfigPpiDesc = (EFI_PEI_PPI_DESCRIPTOR *) AllocateZeroPool (sizeof (EFI_PEI_PPI_DESCRIPTOR));
@@ -98,6 +101,18 @@ SiliconPolicyDonePreMem(
   ASSERT_EFI_ERROR (Status);
 #endif
 
+  //
+  // Initialize S3 Data variable (S3DataPtr). It may be used for warm and fast boot paths.
+  //
+  FspNvsBufferPtr   = NULL;
+  FspNvsBufferSize  = 0;
+  Status = PeiGetLargeVariable (L"FspNvsBuffer", &gFspNvsBufferVariableGuid, &FspNvsBufferPtr, &FspNvsBufferSize);
+  if (Status == EFI_SUCCESS) {
+    DEBUG ((DEBUG_INFO, "Get L\"FspNvsBuffer\" gFspNvsBufferVariableGuid - %r\n", Status));
+    DEBUG ((DEBUG_INFO, "FspNvsBuffer Size - 0x%x\n", FspNvsBufferSize));
+    UPDATE_POLICY (((FSPM_UPD *) FspmUpd)->FspmArchUpd.NvsBufferPtr, FspmArchConfigPpi->NvsBufferPtr, FspNvsBufferPtr);
+  }
+
   //
   // Install Policy Ready PPI
   // While installed, RC assumes the Policy is ready and finalized. So please
diff --git a/Platform/Intel/TigerlakeOpenBoardPkg/FspWrapper/Library/PeiFspPolicyInitLib/PeiFspPolicyInitLib.inf b/Platform/Intel/TigerlakeOpenBoardPkg/FspWrapper/Library/PeiFspPolicyInitLib/PeiFspPolicyInitLib.inf
index 708fbac08f..0236ae45ae 100644
--- a/Platform/Intel/TigerlakeOpenBoardPkg/FspWrapper/Library/PeiFspPolicyInitLib/PeiFspPolicyInitLib.inf
+++ b/Platform/Intel/TigerlakeOpenBoardPkg/FspWrapper/Library/PeiFspPolicyInitLib/PeiFspPolicyInitLib.inf
@@ -181,3 +181,4 @@
   gTianoLogoGuid                          ## CONSUMES
   gCnviConfigGuid                         ## CONSUMES
   gHdAudioPreMemConfigGuid                ## CONSUMES
+  gFspNvsBufferVariableGuid               ## CONSUMES
diff --git a/Platform/Intel/TigerlakeOpenBoardPkg/TigerlakeURvp/OpenBoardPkg.dsc b/Platform/Intel/TigerlakeOpenBoardPkg/TigerlakeURvp/OpenBoardPkg.dsc
index 1adf634034..451492f984 100644
--- a/Platform/Intel/TigerlakeOpenBoardPkg/TigerlakeURvp/OpenBoardPkg.dsc
+++ b/Platform/Intel/TigerlakeOpenBoardPkg/TigerlakeURvp/OpenBoardPkg.dsc
@@ -142,6 +142,9 @@
   GpioCheckConflictLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Gpio/Library/BaseGpioCheckConflictLibNull/BaseGpioCheckConflictLibNull.inf
 !endif
 
+[LibraryClasses.Common.SEC]
+  VariableReadLib|MinPlatformPkg/Library/BaseVariableReadLibNull/BaseVariableReadLibNull.inf
+
 [LibraryClasses.IA32.SEC]
   TestPointCheckLib|$(PLATFORM_PACKAGE)/Test/Library/TestPointCheckLib/SecTestPointCheckLib.inf
   TestPointCheckLib|$(PLATFORM_PACKAGE)/Test/Library/TestPointCheckLibNull/TestPointCheckLibNull.inf
-- 
2.28.0.windows.1



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