MdeModulePkg: Support customized FV Migration Information

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4533

There are use cases which not all FVs need be migrated from TempRam to
permanent memory before TempRam tears down. This new guid is introduced
to avoid unnecessary FV migration to improve boot performance. Platform
can publish MigrationInfo hob with this guid to customize FV migration
info, and PeiCore will only migrate FVs indicated by this Hob info.

This is a backwards compatible change, PeiCore will check MigrationInfo
hob before migration. If MigrationInfo hobs exists, only migrate FVs
recorded by hobs. If MigrationInfo hobs not exists, migrate all FVs to
permanent memory.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Guomin Jiang <guomin.jiang@intel.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Signed-off-by: Cheng Sun <chengx.sun@intel.com>

1 files changed, 62 insertions, 22 deletions

diff --git a/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c b/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c
index 5f32ebb560..4cd8c843cd 100644
--- a/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c
+++ b/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c
@@ -1184,7 +1184,12 @@ EvacuateTempRam (
 

   PEI_CORE_FV_HANDLE            PeiCoreFvHandle;

   EFI_PEI_CORE_FV_LOCATION_PPI  *PeiCoreFvLocationPpi;

+  EFI_PEI_HOB_POINTERS          Hob;

+  EDKII_MIGRATION_INFO          *MigrationInfo;

+  TO_MIGRATE_FV_INFO            *ToMigrateFvInfo;

+  UINT32                        FvMigrationFlags;

   EDKII_MIGRATED_FV_INFO        MigratedFvInfo;

+  UINTN                         Index;

 

   ASSERT (Private->PeiMemoryInstalled);

 

@@ -1211,6 +1216,13 @@ EvacuateTempRam (
 

   ConvertPeiCorePpiPointers (Private, &PeiCoreFvHandle);

 

+  Hob.Raw = GetFirstGuidHob (&gEdkiiMigrationInfoGuid);

+  if (Hob.Raw != NULL) {

+    MigrationInfo = GET_GUID_HOB_DATA (Hob);

+  } else {

+    MigrationInfo = NULL;

+  }

+

   for (FvIndex = 0; FvIndex < Private->FvCount; FvIndex++) {

     FvHeader = Private->Fv[FvIndex].FvHeader;

     ASSERT (FvHeader != NULL);

@@ -1224,20 +1236,33 @@ EvacuateTempRam (
           )

         )

     {

-      //

-      // Allocate page to save the rebased PEIMs, the PEIMs will get dispatched later.

-      //

-      Status =  PeiServicesAllocatePages (

-                  EfiBootServicesCode,

-                  EFI_SIZE_TO_PAGES ((UINTN)FvHeader->FvLength),

-                  &FvHeaderAddress

-                  );

-      ASSERT_EFI_ERROR (Status);

-      MigratedFvHeader = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)FvHeaderAddress;

+      if ((MigrationInfo == NULL) || (MigrationInfo->MigrateAll == TRUE)) {

+        //

+        // Migrate all FVs and copy raw data

+        //

+        FvMigrationFlags = FLAGS_FV_RAW_DATA_COPY;

+      } else {

+        for (Index = 0; Index < MigrationInfo->ToMigrateFvCount; Index++) {

+          ToMigrateFvInfo = ((TO_MIGRATE_FV_INFO *)(MigrationInfo + 1)) + Index;

+          if (ToMigrateFvInfo->FvOrgBaseOnTempRam == (UINT32)(UINTN)FvHeader) {

+            //

+            // This FV is to migrate

+            //

+            FvMigrationFlags = ToMigrateFvInfo->FvMigrationFlags;

+            break;

+          }

+        }

+

+        if (Index == MigrationInfo->ToMigrateFvCount) {

+          //

+          // This FV is not expected to migrate

+          //

+          continue;

+        }

+      }

 

       //

-      // Allocate pool to save the raw PEIMs, which is used to keep consistent context across

-      // multiple boot and PCR0 will keep the same no matter if the address of allocated page is changed.

+      // Allocate pages to save the rebased PEIMs, the PEIMs will get dispatched later.

       //

       Status =  PeiServicesAllocatePages (

                   EfiBootServicesCode,

@@ -1245,7 +1270,8 @@ EvacuateTempRam (
                   &FvHeaderAddress

                   );

       ASSERT_EFI_ERROR (Status);

-      RawDataFvHeader = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)FvHeaderAddress;

+      MigratedFvHeader = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)FvHeaderAddress;

+      CopyMem (MigratedFvHeader, FvHeader, (UINTN)FvHeader->FvLength);

 

       DEBUG ((

         DEBUG_VERBOSE,

@@ -1256,17 +1282,33 @@ EvacuateTempRam (
         ));

 

       //

-      // Copy the context to the rebased pages and raw pages, and create hob to save the

-      // information. The MigratedFvInfo HOB will never be produced when

-      // PcdMigrateTemporaryRamFirmwareVolumes is FALSE, because the PCD control the

-      // feature.

+      // Create hob to save MigratedFvInfo, this hob will only be produced when

+      // Migration feature PCD PcdMigrateTemporaryRamFirmwareVolumes is set to TRUE.

       //

-      CopyMem (MigratedFvHeader, FvHeader, (UINTN)FvHeader->FvLength);

-      CopyMem (RawDataFvHeader, MigratedFvHeader, (UINTN)FvHeader->FvLength);

       MigratedFvInfo.FvOrgBase  = (UINT32)(UINTN)FvHeader;

       MigratedFvInfo.FvNewBase  = (UINT32)(UINTN)MigratedFvHeader;

-      MigratedFvInfo.FvDataBase = (UINT32)(UINTN)RawDataFvHeader;

+      MigratedFvInfo.FvDataBase = 0;

       MigratedFvInfo.FvLength   = (UINT32)(UINTN)FvHeader->FvLength;

+

+      //

+      // When FLAGS_FV_RAW_DATA_COPY bit is set, copy the context to the raw pages and

+      // reset raw data base address in MigratedFvInfo hob.

+      //

+      if ((FvMigrationFlags & FLAGS_FV_RAW_DATA_COPY) == FLAGS_FV_RAW_DATA_COPY) {

+        //

+        // Allocate pages to save the raw PEIMs

+        //

+        Status =  PeiServicesAllocatePages (

+                    EfiBootServicesCode,

+                    EFI_SIZE_TO_PAGES ((UINTN)FvHeader->FvLength),

+                    &FvHeaderAddress

+                    );

+        ASSERT_EFI_ERROR (Status);

+        RawDataFvHeader = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)FvHeaderAddress;

+        CopyMem (RawDataFvHeader, MigratedFvHeader, (UINTN)FvHeader->FvLength);

+        MigratedFvInfo.FvDataBase = (UINT32)(UINTN)RawDataFvHeader;

+      }

+

       BuildGuidDataHob (&gEdkiiMigratedFvInfoGuid, &MigratedFvInfo, sizeof (MigratedFvInfo));

 

       //

@@ -1330,8 +1372,6 @@ EvacuateTempRam (
     }

   }

 

-  RemoveFvHobsInTemporaryMemory (Private);

-

   return Status;

 }