StandaloneMmPkg/MmIpl : Add EFI_HOB_HANDOFF_INFO_TABLE to MM HOB list

GetBootModeHob function need to add EFI_HOB_HANDOFF_INFO_TABLE in MM hob data base. Signed-off-by: Hongbin1 Zhang <[email protected]> Cc: Jiewen Yao <[email protected]> Cc: Ray Ni <[email protected]> Cc: Star Zeng <[email protected]> Cc: Jiaxin Wu <[email protected]> Cc: Wei6 Xu <[email protected]> Cc: Sami Mujawar <[email protected]> Cc: Ard Biesheuvel <[email protected]> Cc: Supreeth Venkatesh <[email protected]>
tianocore · Jan 24, 2025 · 4f432a0 · 4f432a0
1 parent 54c1460
commit 4f432a0
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Showing 3 changed files with 56 additions and 5 deletions.
diff --git a/StandaloneMmPkg/Drivers/StandaloneMmIplPei/MmFoundationHob.c b/StandaloneMmPkg/Drivers/StandaloneMmIplPei/MmFoundationHob.c
@@ -1029,3 +1029,31 @@ CreateMmFoundationHobList (
   *FoundationHobSize = UsedSize;
   return Status;
 }
+
+/**
+
+  Builds a Handoff Information Table HOB.
+
+  @param Hob       - Pointer to handoff information table HOB.
+  @param HobEnd    - End of the HOB list.
+
+**/
+VOID
+CreateMmHobHandoffInfoTable (
+  IN EFI_HOB_HANDOFF_INFO_TABLE  *Hob,
+  IN VOID                        *HobEnd
+  )
+{
+  Hob->Header.HobType   = EFI_HOB_TYPE_HANDOFF;
+  Hob->Header.HobLength = (UINT16)sizeof (EFI_HOB_HANDOFF_INFO_TABLE);
+  Hob->Header.Reserved  = 0;
+
+  Hob->Version  = EFI_HOB_HANDOFF_TABLE_VERSION;
+  Hob->BootMode = GetBootModeHob ();
+
+  Hob->EfiMemoryTop        = 0;
+  Hob->EfiMemoryBottom     = 0;
+  Hob->EfiFreeMemoryTop    = 0;
+  Hob->EfiFreeMemoryBottom = 0;
+  Hob->EfiEndOfHobList     = (EFI_PHYSICAL_ADDRESS)(UINTN)HobEnd;
+}
diff --git a/StandaloneMmPkg/Drivers/StandaloneMmIplPei/StandaloneMmIplPei.c b/StandaloneMmPkg/Drivers/StandaloneMmIplPei/StandaloneMmIplPei.c
@@ -280,6 +280,8 @@ CreatMmHobList (
   UINTN                      BufferSize;
   UINTN                      FoundationHobSize;
   EFI_HOB_MEMORY_ALLOCATION  *MmProfileDataHob;
+  UINTN                      PhitHobSize;
+  VOID                       *HobEnd;
 
   //
   // Get platform HOBs
@@ -336,28 +338,35 @@ CreatMmHobList (
   ASSERT (Status == RETURN_BUFFER_TOO_SMALL);
   ASSERT (FoundationHobSize != 0);
 
+  PhitHobSize = sizeof (EFI_HOB_HANDOFF_INFO_TABLE);
   //
-  // Final result includes platform HOBs, foundation HOBs and a END node.
+  // Final result includes: PHIT HOB, Platform HOBs, Foundation HOBs and an END node.
   //
-  *HobSize = PlatformHobSize + FoundationHobSize + sizeof (EFI_HOB_GENERIC_HEADER);
+  *HobSize = PhitHobSize + PlatformHobSize + FoundationHobSize + sizeof (EFI_HOB_GENERIC_HEADER);
   HobList  = AllocatePages (EFI_SIZE_TO_PAGES (*HobSize));
   ASSERT (HobList != NULL);
   if (HobList == NULL) {
     DEBUG ((DEBUG_ERROR, "Out of resource to create MM HOBs\n"));
     CpuDeadLoop ();
   }
 
+  HobEnd = (UINT8 *)(UINTN)HobList + PhitHobSize + PlatformHobSize + FoundationHobSize;
+  //
+  // Create MmHobHandoffInfoTable
+  //
+  CreateMmHobHandoffInfoTable (HobList, HobEnd);
+
   //
   // Get platform HOBs
   //
-  Status = CreateMmPlatformHob (HobList, &PlatformHobSize);
+  Status = CreateMmPlatformHob ((UINT8 *)HobList + PhitHobSize, &PlatformHobSize);
   ASSERT_EFI_ERROR (Status);
 
   //
   // Get foundation HOBs
   //
   Status = CreateMmFoundationHobList (
-             (UINT8 *)HobList + PlatformHobSize,
+             (UINT8 *)HobList + PhitHobSize + PlatformHobSize,
              &FoundationHobSize,
              HobList,
              PlatformHobSize,
@@ -375,7 +384,7 @@ CreatMmHobList (
   //
   // Create MM HOB list end.
   //
-  MmIplCreateHob ((UINT8 *)HobList + PlatformHobSize + FoundationHobSize, EFI_HOB_TYPE_END_OF_HOB_LIST, sizeof (EFI_HOB_GENERIC_HEADER));
+  MmIplCreateHob (HobEnd, EFI_HOB_TYPE_END_OF_HOB_LIST, sizeof (EFI_HOB_GENERIC_HEADER));
 
   return HobList;
 }

diff --git a/StandaloneMmPkg/Drivers/StandaloneMmIplPei/StandaloneMmIplPei.h b/StandaloneMmPkg/Drivers/StandaloneMmIplPei/StandaloneMmIplPei.h
@@ -143,4 +143,18 @@ BuildMmProfileDataHobInPeiHobList (
   VOID
   );
 
+/**
+
+  Builds a Handoff Information Table HOB.
+
+  @param Hob       - Pointer to handoff information table HOB.
+  @param HobEnd    - End of the HOB list.
+
+**/
+VOID
+CreateMmHobHandoffInfoTable (
+  IN EFI_HOB_HANDOFF_INFO_TABLE  *Hob,
+  IN VOID                        *HobEnd
+  );
+
 #endif