OvmfPkg/PeilessStartupLib: Delete TdxValidateCfv

[mirror_edk2.git] / OvmfPkg / Library / PeilessStartupLib / IntelTdx.c

diff --git a/OvmfPkg/Library/PeilessStartupLib/IntelTdx.c b/OvmfPkg/Library/PeilessStartupLib/IntelTdx.c
index 484fd21057c8f4a67258c05a63297fc571a51e0b..216c413caad5382fcd66423c1e4a4e6d36828547 100644 (file)
--- a/OvmfPkg/Library/PeilessStartupLib/IntelTdx.c
+++ b/OvmfPkg/Library/PeilessStartupLib/IntelTdx.c
@@ -7,8 +7,6 @@
 #include <Library/BaseLib.h>\r
 #include <Library/BaseMemoryLib.h>\r
 #include <Library/DebugLib.h>\r
-#include <Guid/VariableFormat.h>\r
-#include <Guid/SystemNvDataGuid.h>\r
 #include <IndustryStandard/Tpm20.h>\r
 #include <IndustryStandard/UefiTcgPlatform.h>\r
 #include <Library/HobLib.h>\r
@@ -37,157 +35,6 @@ typedef struct {
 \r
 #pragma pack()\r
 \r
-/**\r
-  Check padding data all bit should be 1.\r
-\r
-  @param[in] Buffer     - A pointer to buffer header\r
-  @param[in] BufferSize - Buffer size\r
-\r
-  @retval  TRUE   - The padding data is valid.\r
-  @retval  TRUE  - The padding data is invalid.\r
-\r
-**/\r
-BOOLEAN\r
-CheckPaddingData (\r
-  IN UINT8   *Buffer,\r
-  IN UINT32  BufferSize\r
-  )\r
-{\r
-  UINT32  index;\r
-\r
-  for (index = 0; index < BufferSize; index++) {\r
-    if (Buffer[index] != 0xFF) {\r
-      return FALSE;\r
-    }\r
-  }\r
-\r
-  return TRUE;\r
-}\r
-\r
-/**\r
-  Check the integrity of CFV data.\r
-\r
-  @param[in] TdxCfvBase - A pointer to CFV header\r
-  @param[in] TdxCfvSize - CFV data size\r
-\r
-  @retval  TRUE   - The CFV data is valid.\r
-  @retval  FALSE  - The CFV data is invalid.\r
-\r
-**/\r
-BOOLEAN\r
-EFIAPI\r
-TdxValidateCfv (\r
-  IN UINT8   *TdxCfvBase,\r
-  IN UINT32  TdxCfvSize\r
-  )\r
-{\r
-  UINT16                         Checksum;\r
-  UINTN                          VariableBase;\r
-  UINT32                         VariableOffset;\r
-  UINT32                         VariableOffsetBeforeAlign;\r
-  EFI_FIRMWARE_VOLUME_HEADER     *CfvFvHeader;\r
-  VARIABLE_STORE_HEADER          *CfvVariableStoreHeader;\r
-  AUTHENTICATED_VARIABLE_HEADER  *VariableHeader;\r
-\r
-  static EFI_GUID  FvHdrGUID       = EFI_SYSTEM_NV_DATA_FV_GUID;\r
-  static EFI_GUID  VarStoreHdrGUID = EFI_AUTHENTICATED_VARIABLE_GUID;\r
-\r
-  VariableOffset = 0;\r
-\r
-  if (TdxCfvBase == NULL) {\r
-    DEBUG ((DEBUG_ERROR, "TDX CFV: CFV pointer is NULL\n"));\r
-    return FALSE;\r
-  }\r
-\r
-  //\r
-  // Verify the header zerovetor, filesystemguid,\r
-  // revision, signature, attributes, fvlength, checksum\r
-  // HeaderLength cannot be an odd number\r
-  //\r
-  CfvFvHeader = (EFI_FIRMWARE_VOLUME_HEADER *)TdxCfvBase;\r
-\r
-  if ((!IsZeroBuffer (CfvFvHeader->ZeroVector, 16)) ||\r
-      (!CompareGuid (&FvHdrGUID, &CfvFvHeader->FileSystemGuid)) ||\r
-      (CfvFvHeader->Signature != EFI_FVH_SIGNATURE) ||\r
-      (CfvFvHeader->Attributes != 0x4feff) ||\r
-      (CfvFvHeader->Revision != EFI_FVH_REVISION) ||\r
-      (CfvFvHeader->FvLength != TdxCfvSize)\r
-      )\r
-  {\r
-    DEBUG ((DEBUG_ERROR, "TDX CFV: Basic FV headers were invalid\n"));\r
-    return FALSE;\r
-  }\r
-\r
-  //\r
-  // Verify the header checksum\r
-  //\r
-  Checksum = CalculateSum16 ((VOID *)CfvFvHeader, CfvFvHeader->HeaderLength);\r
-\r
-  if (Checksum != 0) {\r
-    DEBUG ((DEBUG_ERROR, "TDX CFV: FV checksum was invalid\n"));\r
-    return FALSE;\r
-  }\r
-\r
-  //\r
-  // Verify the header signature, size, format, state\r
-  //\r
-  CfvVariableStoreHeader = (VARIABLE_STORE_HEADER *)(TdxCfvBase + CfvFvHeader->HeaderLength);\r
-  if ((!CompareGuid (&VarStoreHdrGUID, &CfvVariableStoreHeader->Signature)) ||\r
-      (CfvVariableStoreHeader->Format != VARIABLE_STORE_FORMATTED) ||\r
-      (CfvVariableStoreHeader->State != VARIABLE_STORE_HEALTHY) ||\r
-      (CfvVariableStoreHeader->Size > (CfvFvHeader->FvLength - CfvFvHeader->HeaderLength)) ||\r
-      (CfvVariableStoreHeader->Size < sizeof (VARIABLE_STORE_HEADER))\r
-      )\r
-  {\r
-    DEBUG ((DEBUG_ERROR, "TDX CFV: Variable Store header was invalid\n"));\r
-    return FALSE;\r
-  }\r
-\r
-  //\r
-  // Verify the header startId, state\r
-  // Verify data to the end\r
-  //\r
-  VariableBase = (UINTN)TdxCfvBase + CfvFvHeader->HeaderLength + sizeof (VARIABLE_STORE_HEADER);\r
-  while (VariableOffset  < (CfvVariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER))) {\r
-    VariableHeader = (AUTHENTICATED_VARIABLE_HEADER *)(VariableBase + VariableOffset);\r
-    if (VariableHeader->StartId != VARIABLE_DATA) {\r
-      if (!CheckPaddingData ((UINT8 *)VariableHeader, CfvVariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER) - VariableOffset)) {\r
-        DEBUG ((DEBUG_ERROR, "TDX CFV: Variable header was invalid\n"));\r
-        return FALSE;\r
-      }\r
-\r
-      VariableOffset = CfvVariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER);\r
-    } else {\r
-      if (!((VariableHeader->State == VAR_IN_DELETED_TRANSITION) ||\r
-            (VariableHeader->State == VAR_DELETED) ||\r
-            (VariableHeader->State == VAR_HEADER_VALID_ONLY) ||\r
-            (VariableHeader->State == VAR_ADDED)))\r
-      {\r
-        DEBUG ((DEBUG_ERROR, "TDX CFV: Variable header was invalid\n"));\r
-        return FALSE;\r
-      }\r
-\r
-      VariableOffset += sizeof (AUTHENTICATED_VARIABLE_HEADER) + VariableHeader->NameSize + VariableHeader->DataSize;\r
-      // Verify VariableOffset should be less than or equal CfvVariableStoreHeader->Size - sizeof(VARIABLE_STORE_HEADER)\r
-      if (VariableOffset > (CfvVariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER))) {\r
-        DEBUG ((DEBUG_ERROR, "TDX CFV: Variable header was invalid\n"));\r
-        return FALSE;\r
-      }\r
-\r
-      VariableOffsetBeforeAlign = VariableOffset;\r
-      // 4 byte align\r
-      VariableOffset = (VariableOffset  + 3) & (UINTN)(~3);\r
-\r
-      if (!CheckPaddingData ((UINT8 *)(VariableBase + VariableOffsetBeforeAlign), VariableOffset - VariableOffsetBeforeAlign)) {\r
-        DEBUG ((DEBUG_ERROR, "TDX CFV: Variable header was invalid\n"));\r
-        return FALSE;\r
-      }\r
-    }\r
-  }\r
-\r
-  return TRUE;\r
-}\r
-\r
 /**\r
   Measure the Hoblist passed from the VMM.\r
 \r