[DROP ON REBASE] Revert "[CHERRY-PICK] SecurityPkg: Tcg2AcpiFfa: Fix endianness of partition ID"

This reverts commit 953b409.

Author: kuqin12

SecurityPkg/Tcg/Tcg2AcpiFfa/Tcg2AcpiFfa.c

@@ -69,21 +69,21 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 #pragma pack(1)
 
 typedef struct {
-  EFI_ACPI_DESCRIPTION_HEADER                               Header;
+  EFI_ACPI_DESCRIPTION_HEADER    Header;
   // Flags field is replaced in version 4 and above
   //    BIT0~15:  PlatformClass      This field is only valid for version 4 and above
   //    BIT16~31: Reserved
-  UINT32                                                    Flags;
-  UINT64                                                    AddressOfControlArea;
-  UINT32                                                    StartMethod;
-  EFI_TPM2_ACPI_START_METHOD_SPECIFIC_PARAMETERS_ARM_FFA    FfaParameters;
-  UINT32                                                    Laml; // Optional
-  UINT64                                                    Lasa; // Optional
-} EFI_TPM2_ACPI_TABLE_V5;
+  UINT32                         Flags;
+  UINT64                         AddressOfControlArea;
+  UINT32                         StartMethod;
+  UINT8                          PlatformSpecificParameters[12]; // size up to 12
+  UINT32                         Laml;                           // Optional
+  UINT64                         Lasa;                           // Optional
+} EFI_TPM2_ACPI_TABLE_V4;
 
 #pragma pack()
 
-EFI_TPM2_ACPI_TABLE_V5  mTpm2AcpiTemplate = {
+EFI_TPM2_ACPI_TABLE_V4  mTpm2AcpiTemplate = {
   {
     EFI_ACPI_5_0_TRUSTED_COMPUTING_PLATFORM_2_TABLE_SIGNATURE,
     sizeof (mTpm2AcpiTemplate),
@@ -384,17 +384,17 @@ PublishTpm2 (
   PartitionId = PcdGet16 (PcdTpmServiceFfaPartitionId);
   ASSERT (PartitionId != 0);
   if (InterfaceType == Tpm2PtpInterfaceCrb) {
-    mTpm2AcpiTemplate.StartMethod              = EFI_TPM2_ACPI_TABLE_START_METHOD_COMMAND_RESPONSE_BUFFER_INTERFACE_WITH_FFA;
-    mTpm2AcpiTemplate.AddressOfControlArea     = PcdGet64 (PcdTpmBaseAddress) + 0x40;
-    mTpm2AcpiTemplate.FfaParameters.Flags      = 0x00;           // Notifications Not Supported
-    mTpm2AcpiTemplate.FfaParameters.Attributes = (EFI_TPM2_ACPI_TABLE_ARM_FFA_PARAMETER_ATTR_CRB_REGION_SIZE_4KB << EFI_TPM2_ACPI_TABLE_ARM_FFA_PARAMETER_ATTR_CRB_REGION_SIZE_SHIFT) |
-                                                 (EFI_TPM2_ACPI_TABLE_ARM_FFA_PARAMETER_ATTR_MEM_TYPE_NOT_CACHABLE << EFI_TPM2_ACPI_TABLE_ARM_FFA_PARAMETER_ATTR_MEM_TYPE_SHIFT);
-    mTpm2AcpiTemplate.FfaParameters.PartitionId = PartitionId;   // Partition ID
-    ControlArea                                 = (EFI_TPM2_ACPI_CONTROL_AREA *)(UINTN)mTpm2AcpiTemplate.AddressOfControlArea;
-    ControlArea->CommandSize                    = 0xF80;
-    ControlArea->ResponseSize                   = 0xF80;
-    ControlArea->Command                        = PcdGet64 (PcdTpmBaseAddress) + 0x80;
-    ControlArea->Response                       = PcdGet64 (PcdTpmBaseAddress) + 0x80;
+    mTpm2AcpiTemplate.StartMethod                   = EFI_TPM2_ACPI_TABLE_START_METHOD_COMMAND_RESPONSE_BUFFER_INTERFACE_WITH_FFA;
+    mTpm2AcpiTemplate.AddressOfControlArea          = PcdGet64 (PcdTpmBaseAddress) + 0x40;
+    mTpm2AcpiTemplate.PlatformSpecificParameters[0] = 0x00;                           // Notifications Not Supported
+    mTpm2AcpiTemplate.PlatformSpecificParameters[1] = 0x00;                           // CRB 4KiB size, Not Cacheable
+    mTpm2AcpiTemplate.PlatformSpecificParameters[2] = (PartitionId >> 8) & MAX_UINT8; // HI Byte of Partition ID
+    mTpm2AcpiTemplate.PlatformSpecificParameters[3] = (PartitionId) & MAX_UINT8;      // LO Byte of Partition ID
+    ControlArea                                     = (EFI_TPM2_ACPI_CONTROL_AREA *)(UINTN)mTpm2AcpiTemplate.AddressOfControlArea;
+    ControlArea->CommandSize                        = 0xF80;
+    ControlArea->ResponseSize                       = 0xF80;
+    ControlArea->Command                            = PcdGet64 (PcdTpmBaseAddress) + 0x80;
+    ControlArea->Response                           = PcdGet64 (PcdTpmBaseAddress) + 0x80;
   } else {
     DEBUG ((DEBUG_ERROR, "TPM2 InterfaceType get error! %d\n", InterfaceType));
     return EFI_UNSUPPORTED;