[mirror_edk2.git] / SecurityPkg / Library / HashLibBaseCryptoRouter / HashLibBaseCryptoRouterPei.c

/** @file\r
  This library is BaseCrypto router. It will redirect hash request to each individual\r
  hash handler registerd, such as SHA1, SHA256.\r
  Platform can use PcdTpm2HashMask to mask some hash engines.\r
\r
Copyright (c) 2013 - 2017, Intel Corporation. All rights reserved. <BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution.  The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php\r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#include <PiPei.h>\r
#include <Library/BaseLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/Tpm2CommandLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/PcdLib.h>\r
#include <Library/HobLib.h>\r
#include <Library/HashLib.h>\r
#include <Guid/ZeroGuid.h>\r
\r
#include "HashLibBaseCryptoRouterCommon.h"\r
\r
#define HASH_LIB_PEI_ROUTER_GUID \\r
  { 0x84681c08, 0x6873, 0x46f3, { 0x8b, 0xb7, 0xab, 0x66, 0x18, 0x95, 0xa1, 0xb3 } }\r
\r
EFI_GUID mHashLibPeiRouterGuid = HASH_LIB_PEI_ROUTER_GUID;\r
\r
typedef struct {\r
  //\r
  // If gZeroGuid, SupportedHashMask is 0 for FIRST module which consumes HashLib\r
  //   or the hash algorithm bitmap of LAST module which consumes HashLib.\r
  //   HashInterfaceCount and HashInterface are all 0.\r
  // If gEfiCallerIdGuid, HashInterfaceCount, HashInterface and SupportedHashMask\r
  //   are the hash interface information of CURRENT module which consumes HashLib.\r
  //\r
  EFI_GUID         Identifier;\r
  UINTN            HashInterfaceCount;\r
  HASH_INTERFACE   HashInterface[HASH_COUNT];\r
  UINT32           SupportedHashMask;\r
} HASH_INTERFACE_HOB;\r
\r
/**\r
  This function gets hash interface hob.\r
\r
  @param Identifier    Identifier to get hash interface hob.\r
\r
  @retval hash interface hob.\r
**/\r
HASH_INTERFACE_HOB *\r
InternalGetHashInterfaceHob (\r
  EFI_GUID      *Identifier\r
  )\r
{\r
  EFI_PEI_HOB_POINTERS  Hob;\r
  HASH_INTERFACE_HOB    *HashInterfaceHob;\r
\r
  Hob.Raw = GetFirstGuidHob (&mHashLibPeiRouterGuid);\r
  while (Hob.Raw != NULL) {\r
    HashInterfaceHob = GET_GUID_HOB_DATA (Hob);\r
    if (CompareGuid (&HashInterfaceHob->Identifier, Identifier)) {\r
      //\r
      // Found the matched one.\r
      //\r
      return HashInterfaceHob;\r
    }\r
    Hob.Raw = GET_NEXT_HOB (Hob);\r
    Hob.Raw = GetNextGuidHob (&mHashLibPeiRouterGuid, Hob.Raw);\r
  }\r
  return NULL;\r
}\r
\r
/**\r
  This function creates hash interface hob.\r
\r
  @param Identifier    Identifier to create hash interface hob.\r
\r
  @retval hash interface hob.\r
**/\r
HASH_INTERFACE_HOB *\r
InternalCreateHashInterfaceHob (\r
  EFI_GUID      *Identifier\r
  )\r
{\r
  HASH_INTERFACE_HOB LocalHashInterfaceHob;\r
\r
  ZeroMem (&LocalHashInterfaceHob, sizeof(LocalHashInterfaceHob));\r
  CopyGuid (&LocalHashInterfaceHob.Identifier, Identifier);\r
  return BuildGuidDataHob (&mHashLibPeiRouterGuid, &LocalHashInterfaceHob, sizeof(LocalHashInterfaceHob));\r
}\r
\r
/**\r
  Check mismatch of supported HashMask between modules\r
  that may link different HashInstanceLib instances.\r
\r
  @param HashInterfaceHobCurrent    Pointer to hash interface hob for CURRENT module.\r
\r
**/\r
VOID\r
CheckSupportedHashMaskMismatch (\r
  IN HASH_INTERFACE_HOB *HashInterfaceHobCurrent\r
  )\r
{\r
  HASH_INTERFACE_HOB    *HashInterfaceHobLast;\r
\r
  HashInterfaceHobLast = InternalGetHashInterfaceHob (&gZeroGuid);\r
  ASSERT (HashInterfaceHobLast != NULL);\r
\r
  if ((HashInterfaceHobLast->SupportedHashMask != 0) &&\r
      (HashInterfaceHobCurrent->SupportedHashMask != HashInterfaceHobLast->SupportedHashMask)) {\r
    DEBUG ((\r
      DEBUG_WARN,\r
      "WARNING: There is mismatch of supported HashMask (0x%x - 0x%x) between modules\n",\r
      HashInterfaceHobCurrent->SupportedHashMask,\r
      HashInterfaceHobLast->SupportedHashMask\r
      ));\r
    DEBUG ((DEBUG_WARN, "that are linking different HashInstanceLib instances!\n"));\r
  }\r
}\r
\r
/**\r
  Start hash sequence.\r
\r
  @param HashHandle Hash handle.\r
\r
  @retval EFI_SUCCESS          Hash sequence start and HandleHandle returned.\r
  @retval EFI_OUT_OF_RESOURCES No enough resource to start hash.\r
**/\r
EFI_STATUS\r
EFIAPI\r
HashStart (\r
  OUT HASH_HANDLE    *HashHandle\r
  )\r
{\r
  HASH_INTERFACE_HOB *HashInterfaceHob;\r
  HASH_HANDLE        *HashCtx;\r
  UINTN              Index;\r
  UINT32             HashMask;\r
\r
  HashInterfaceHob = InternalGetHashInterfaceHob (&gEfiCallerIdGuid);\r
  if (HashInterfaceHob == NULL) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  if (HashInterfaceHob->HashInterfaceCount == 0) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  CheckSupportedHashMaskMismatch (HashInterfaceHob);\r
\r
  HashCtx = AllocatePool (sizeof(*HashCtx) * HashInterfaceHob->HashInterfaceCount);\r
  ASSERT (HashCtx != NULL);\r
\r
  for (Index = 0; Index < HashInterfaceHob->HashInterfaceCount; Index++) {\r
    HashMask = Tpm2GetHashMaskFromAlgo (&HashInterfaceHob->HashInterface[Index].HashGuid);\r
    if ((HashMask & PcdGet32 (PcdTpm2HashMask)) != 0) {\r
      HashInterfaceHob->HashInterface[Index].HashInit (&HashCtx[Index]);\r
    }\r
  }\r
\r
  *HashHandle = (HASH_HANDLE)HashCtx;\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  Update hash sequence data.\r
\r
  @param HashHandle    Hash handle.\r
  @param DataToHash    Data to be hashed.\r
  @param DataToHashLen Data size.\r
\r
  @retval EFI_SUCCESS     Hash sequence updated.\r
**/\r
EFI_STATUS\r
EFIAPI\r
HashUpdate (\r
  IN HASH_HANDLE    HashHandle,\r
  IN VOID           *DataToHash,\r
  IN UINTN          DataToHashLen\r
  )\r
{\r
  HASH_INTERFACE_HOB *HashInterfaceHob;\r
  HASH_HANDLE        *HashCtx;\r
  UINTN              Index;\r
  UINT32             HashMask;\r
\r
  HashInterfaceHob = InternalGetHashInterfaceHob (&gEfiCallerIdGuid);\r
  if (HashInterfaceHob == NULL) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  if (HashInterfaceHob->HashInterfaceCount == 0) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  CheckSupportedHashMaskMismatch (HashInterfaceHob);\r
\r
  HashCtx = (HASH_HANDLE *)HashHandle;\r
\r
  for (Index = 0; Index < HashInterfaceHob->HashInterfaceCount; Index++) {\r
    HashMask = Tpm2GetHashMaskFromAlgo (&HashInterfaceHob->HashInterface[Index].HashGuid);\r
    if ((HashMask & PcdGet32 (PcdTpm2HashMask)) != 0) {\r
      HashInterfaceHob->HashInterface[Index].HashUpdate (HashCtx[Index], DataToHash, DataToHashLen);\r
    }\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  Hash sequence complete and extend to PCR.\r
\r
  @param HashHandle    Hash handle.\r
  @param PcrIndex      PCR to be extended.\r
  @param DataToHash    Data to be hashed.\r
  @param DataToHashLen Data size.\r
  @param DigestList    Digest list.\r
\r
  @retval EFI_SUCCESS     Hash sequence complete and DigestList is returned.\r
**/\r
EFI_STATUS\r
EFIAPI\r
HashCompleteAndExtend (\r
  IN HASH_HANDLE         HashHandle,\r
  IN TPMI_DH_PCR         PcrIndex,\r
  IN VOID                *DataToHash,\r
  IN UINTN               DataToHashLen,\r
  OUT TPML_DIGEST_VALUES *DigestList\r
  )\r
{\r
  TPML_DIGEST_VALUES Digest;\r
  HASH_INTERFACE_HOB *HashInterfaceHob;\r
  HASH_HANDLE        *HashCtx;\r
  UINTN              Index;\r
  EFI_STATUS         Status;\r
  UINT32             HashMask;\r
\r
  HashInterfaceHob = InternalGetHashInterfaceHob (&gEfiCallerIdGuid);\r
  if (HashInterfaceHob == NULL) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  if (HashInterfaceHob->HashInterfaceCount == 0) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  CheckSupportedHashMaskMismatch (HashInterfaceHob);\r
\r
  HashCtx = (HASH_HANDLE *)HashHandle;\r
  ZeroMem (DigestList, sizeof(*DigestList));\r
\r
  for (Index = 0; Index < HashInterfaceHob->HashInterfaceCount; Index++) {\r
    HashMask = Tpm2GetHashMaskFromAlgo (&HashInterfaceHob->HashInterface[Index].HashGuid);\r
    if ((HashMask & PcdGet32 (PcdTpm2HashMask)) != 0) {\r
      HashInterfaceHob->HashInterface[Index].HashUpdate (HashCtx[Index], DataToHash, DataToHashLen);\r
      HashInterfaceHob->HashInterface[Index].HashFinal (HashCtx[Index], &Digest);\r
      Tpm2SetHashToDigestList (DigestList, &Digest);\r
    }\r
  }\r
\r
  FreePool (HashCtx);\r
\r
  Status = Tpm2PcrExtend (\r
             PcrIndex,\r
             DigestList\r
             );\r
  return Status;\r
}\r
\r
/**\r
  Hash data and extend to PCR.\r
\r
  @param PcrIndex      PCR to be extended.\r
  @param DataToHash    Data to be hashed.\r
  @param DataToHashLen Data size.\r
  @param DigestList    Digest list.\r
\r
  @retval EFI_SUCCESS     Hash data and DigestList is returned.\r
**/\r
EFI_STATUS\r
EFIAPI\r
HashAndExtend (\r
  IN TPMI_DH_PCR                    PcrIndex,\r
  IN VOID                           *DataToHash,\r
  IN UINTN                          DataToHashLen,\r
  OUT TPML_DIGEST_VALUES            *DigestList\r
  )\r
{\r
  HASH_INTERFACE_HOB *HashInterfaceHob;\r
  HASH_HANDLE        HashHandle;\r
  EFI_STATUS         Status;\r
\r
  HashInterfaceHob = InternalGetHashInterfaceHob (&gEfiCallerIdGuid);\r
  if (HashInterfaceHob == NULL) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  if (HashInterfaceHob->HashInterfaceCount == 0) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  CheckSupportedHashMaskMismatch (HashInterfaceHob);\r
\r
  HashStart (&HashHandle);\r
  HashUpdate (HashHandle, DataToHash, DataToHashLen);\r
  Status = HashCompleteAndExtend (HashHandle, PcrIndex, NULL, 0, DigestList);\r
\r
  return Status;\r
}\r
\r
/**\r
  This service register Hash.\r
\r
  @param HashInterface  Hash interface\r
\r
  @retval EFI_SUCCESS          This hash interface is registered successfully.\r
  @retval EFI_UNSUPPORTED      System does not support register this interface.\r
  @retval EFI_ALREADY_STARTED  System already register this interface.\r
**/\r
EFI_STATUS\r
EFIAPI\r
RegisterHashInterfaceLib (\r
  IN HASH_INTERFACE   *HashInterface\r
  )\r
{\r
  UINTN              Index;\r
  HASH_INTERFACE_HOB *HashInterfaceHob;\r
  UINT32             HashMask;\r
  EFI_STATUS         Status;\r
\r
  //\r
  // Check allow\r
  //\r
  HashMask = Tpm2GetHashMaskFromAlgo (&HashInterface->HashGuid);\r
  if ((HashMask & PcdGet32 (PcdTpm2HashMask)) == 0) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  HashInterfaceHob = InternalGetHashInterfaceHob (&gEfiCallerIdGuid);\r
  if (HashInterfaceHob == NULL) {\r
    HashInterfaceHob = InternalCreateHashInterfaceHob (&gEfiCallerIdGuid);\r
    if (HashInterfaceHob == NULL) {\r
      return EFI_OUT_OF_RESOURCES;\r
    }\r
  }\r
\r
  if (HashInterfaceHob->HashInterfaceCount >= HASH_COUNT) {\r
    return EFI_OUT_OF_RESOURCES;\r
  }\r
\r
  //\r
  // Check duplication\r
  //\r
  for (Index = 0; Index < HashInterfaceHob->HashInterfaceCount; Index++) {\r
    if (CompareGuid (&HashInterfaceHob->HashInterface[Index].HashGuid, &HashInterface->HashGuid)) {\r
      DEBUG ((DEBUG_ERROR, "Hash Interface (%g) has been registered\n", &HashInterface->HashGuid));\r
      return EFI_ALREADY_STARTED;\r
    }\r
  }\r
\r
  //\r
  // Record hash algorithm bitmap of CURRENT module which consumes HashLib.\r
  //\r
  HashInterfaceHob->SupportedHashMask = PcdGet32 (PcdTcg2HashAlgorithmBitmap) | HashMask;\r
  Status = PcdSet32S (PcdTcg2HashAlgorithmBitmap, HashInterfaceHob->SupportedHashMask);\r
  ASSERT_EFI_ERROR (Status);\r
\r
  CopyMem (&HashInterfaceHob->HashInterface[HashInterfaceHob->HashInterfaceCount], HashInterface, sizeof(*HashInterface));\r
  HashInterfaceHob->HashInterfaceCount ++;\r
  \r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  The constructor function of HashLibBaseCryptoRouterPei.\r
\r
  @param  FileHandle   The handle of FFS header the loaded driver.\r
  @param  PeiServices  The pointer to the PEI services.\r
\r
  @retval EFI_SUCCESS           The constructor executes successfully.\r
  @retval EFI_OUT_OF_RESOURCES  There is no enough resource for the constructor.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
HashLibBaseCryptoRouterPeiConstructor (\r
  IN EFI_PEI_FILE_HANDLE        FileHandle,\r
  IN CONST EFI_PEI_SERVICES     **PeiServices\r
  )\r
{\r
  EFI_STATUS            Status;\r
  HASH_INTERFACE_HOB    *HashInterfaceHob;\r
\r
  HashInterfaceHob = InternalGetHashInterfaceHob (&gZeroGuid);\r
  if (HashInterfaceHob == NULL) {\r
    //\r
    // No HOB with gZeroGuid Identifier has been created,\r
    // this is FIRST module which consumes HashLib.\r
    // Create the HOB with gZeroGuid Identifier.\r
    //\r
    HashInterfaceHob = InternalCreateHashInterfaceHob (&gZeroGuid);\r
    if (HashInterfaceHob == NULL) {\r
      return EFI_OUT_OF_RESOURCES;\r
    }\r
  } else {\r
    //\r
    // Record hash algorithm bitmap of LAST module which also consumes HashLib.\r
    //\r
    HashInterfaceHob->SupportedHashMask = PcdGet32 (PcdTcg2HashAlgorithmBitmap);\r
  }\r
\r
  HashInterfaceHob = InternalGetHashInterfaceHob (&gEfiCallerIdGuid);\r
  if (HashInterfaceHob != NULL) {\r
    //\r
    // In PEI phase, some modules may call RegisterForShadow and will be\r
    // shadowed and executed again after memory is discovered.\r
    // This is the second execution of this module, clear the hash interface\r
    // information registered at its first execution.\r
    //\r
    ZeroMem (&HashInterfaceHob->HashInterface, sizeof (HashInterfaceHob->HashInterface));\r
    HashInterfaceHob->HashInterfaceCount = 0;\r
    HashInterfaceHob->SupportedHashMask = 0;\r
  }\r
\r
  //\r
  // Set PcdTcg2HashAlgorithmBitmap to 0 in CONSTRUCTOR for CURRENT module.\r
  //\r
  Status = PcdSet32S (PcdTcg2HashAlgorithmBitmap, 0);\r
  ASSERT_EFI_ERROR (Status);\r
\r
  return EFI_SUCCESS;\r
}\r
Commit	Line	Data
	1	/** @file\r
	2	This library is BaseCrypto router. It will redirect hash request to each individual\r
	3	hash handler registerd, such as SHA1, SHA256.\r
	4	Platform can use PcdTpm2HashMask to mask some hash engines.\r
	5	\r
	6	Copyright (c) 2013 - 2017, Intel Corporation. All rights reserved. <BR>\r
	7	This program and the accompanying materials\r
	8	are licensed and made available under the terms and conditions of the BSD License\r
	9	which accompanies this distribution. The full text of the license may be found at\r
	10	http://opensource.org/licenses/bsd-license.php\r
	11	\r
	12	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	13	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	14	\r
	15	**/\r
	16	\r
	17	#include <PiPei.h>\r
	18	#include <Library/BaseLib.h>\r
	19	#include <Library/BaseMemoryLib.h>\r
	20	#include <Library/Tpm2CommandLib.h>\r
	21	#include <Library/DebugLib.h>\r
	22	#include <Library/MemoryAllocationLib.h>\r
	23	#include <Library/PcdLib.h>\r
	24	#include <Library/HobLib.h>\r
	25	#include <Library/HashLib.h>\r
	26	#include <Guid/ZeroGuid.h>\r
	27	\r
	28	#include "HashLibBaseCryptoRouterCommon.h"\r
	29	\r
	30	#define HASH_LIB_PEI_ROUTER_GUID \\r
	31	{ 0x84681c08, 0x6873, 0x46f3, { 0x8b, 0xb7, 0xab, 0x66, 0x18, 0x95, 0xa1, 0xb3 } }\r
	32	\r
	33	EFI_GUID mHashLibPeiRouterGuid = HASH_LIB_PEI_ROUTER_GUID;\r
	34	\r
	35	typedef struct {\r
	36	//\r
	37	// If gZeroGuid, SupportedHashMask is 0 for FIRST module which consumes HashLib\r
	38	// or the hash algorithm bitmap of LAST module which consumes HashLib.\r
	39	// HashInterfaceCount and HashInterface are all 0.\r
	40	// If gEfiCallerIdGuid, HashInterfaceCount, HashInterface and SupportedHashMask\r
	41	// are the hash interface information of CURRENT module which consumes HashLib.\r
	42	//\r
	43	EFI_GUID Identifier;\r
	44	UINTN HashInterfaceCount;\r
	45	HASH_INTERFACE HashInterface[HASH_COUNT];\r
	46	UINT32 SupportedHashMask;\r
	47	} HASH_INTERFACE_HOB;\r
	48	\r
	49	/**\r
	50	This function gets hash interface hob.\r
	51	\r
	52	@param Identifier Identifier to get hash interface hob.\r
	53	\r
	54	@retval hash interface hob.\r
	55	**/\r
	56	HASH_INTERFACE_HOB *\r
	57	InternalGetHashInterfaceHob (\r
	58	EFI_GUID *Identifier\r
	59	)\r
	60	{\r
	61	EFI_PEI_HOB_POINTERS Hob;\r
	62	HASH_INTERFACE_HOB *HashInterfaceHob;\r
	63	\r
	64	Hob.Raw = GetFirstGuidHob (&mHashLibPeiRouterGuid);\r
	65	while (Hob.Raw != NULL) {\r
	66	HashInterfaceHob = GET_GUID_HOB_DATA (Hob);\r
	67	if (CompareGuid (&HashInterfaceHob->Identifier, Identifier)) {\r
	68	//\r
	69	// Found the matched one.\r
	70	//\r
	71	return HashInterfaceHob;\r
	72	}\r
	73	Hob.Raw = GET_NEXT_HOB (Hob);\r
	74	Hob.Raw = GetNextGuidHob (&mHashLibPeiRouterGuid, Hob.Raw);\r
	75	}\r
	76	return NULL;\r
	77	}\r
	78	\r
	79	/**\r
	80	This function creates hash interface hob.\r
	81	\r
	82	@param Identifier Identifier to create hash interface hob.\r
	83	\r
	84	@retval hash interface hob.\r
	85	**/\r
	86	HASH_INTERFACE_HOB *\r
	87	InternalCreateHashInterfaceHob (\r
	88	EFI_GUID *Identifier\r
	89	)\r
	90	{\r
	91	HASH_INTERFACE_HOB LocalHashInterfaceHob;\r
	92	\r
	93	ZeroMem (&LocalHashInterfaceHob, sizeof(LocalHashInterfaceHob));\r
	94	CopyGuid (&LocalHashInterfaceHob.Identifier, Identifier);\r
	95	return BuildGuidDataHob (&mHashLibPeiRouterGuid, &LocalHashInterfaceHob, sizeof(LocalHashInterfaceHob));\r
	96	}\r
	97	\r
	98	/**\r
	99	Check mismatch of supported HashMask between modules\r
	100	that may link different HashInstanceLib instances.\r
	101	\r
	102	@param HashInterfaceHobCurrent Pointer to hash interface hob for CURRENT module.\r
	103	\r
	104	**/\r
	105	VOID\r
	106	CheckSupportedHashMaskMismatch (\r
	107	IN HASH_INTERFACE_HOB *HashInterfaceHobCurrent\r
	108	)\r
	109	{\r
	110	HASH_INTERFACE_HOB *HashInterfaceHobLast;\r
	111	\r
	112	HashInterfaceHobLast = InternalGetHashInterfaceHob (&gZeroGuid);\r
	113	ASSERT (HashInterfaceHobLast != NULL);\r
	114	\r
	115	if ((HashInterfaceHobLast->SupportedHashMask != 0) &&\r
	116	(HashInterfaceHobCurrent->SupportedHashMask != HashInterfaceHobLast->SupportedHashMask)) {\r
	117	DEBUG ((\r
	118	DEBUG_WARN,\r
	119	"WARNING: There is mismatch of supported HashMask (0x%x - 0x%x) between modules\n",\r
	120	HashInterfaceHobCurrent->SupportedHashMask,\r
	121	HashInterfaceHobLast->SupportedHashMask\r
	122	));\r
	123	DEBUG ((DEBUG_WARN, "that are linking different HashInstanceLib instances!\n"));\r
	124	}\r
	125	}\r
	126	\r
	127	/**\r
	128	Start hash sequence.\r
	129	\r
	130	@param HashHandle Hash handle.\r
	131	\r
	132	@retval EFI_SUCCESS Hash sequence start and HandleHandle returned.\r
	133	@retval EFI_OUT_OF_RESOURCES No enough resource to start hash.\r
	134	**/\r
	135	EFI_STATUS\r
	136	EFIAPI\r
	137	HashStart (\r
	138	OUT HASH_HANDLE *HashHandle\r
	139	)\r
	140	{\r
	141	HASH_INTERFACE_HOB *HashInterfaceHob;\r
	142	HASH_HANDLE *HashCtx;\r
	143	UINTN Index;\r
	144	UINT32 HashMask;\r
	145	\r
	146	HashInterfaceHob = InternalGetHashInterfaceHob (&gEfiCallerIdGuid);\r
	147	if (HashInterfaceHob == NULL) {\r
	148	return EFI_UNSUPPORTED;\r
	149	}\r
	150	\r
	151	if (HashInterfaceHob->HashInterfaceCount == 0) {\r
	152	return EFI_UNSUPPORTED;\r
	153	}\r
	154	\r
	155	CheckSupportedHashMaskMismatch (HashInterfaceHob);\r
	156	\r
	157	HashCtx = AllocatePool (sizeof(HashCtx) HashInterfaceHob->HashInterfaceCount);\r
	158	ASSERT (HashCtx != NULL);\r
	159	\r
	160	for (Index = 0; Index < HashInterfaceHob->HashInterfaceCount; Index++) {\r
	161	HashMask = Tpm2GetHashMaskFromAlgo (&HashInterfaceHob->HashInterface[Index].HashGuid);\r
	162	if ((HashMask & PcdGet32 (PcdTpm2HashMask)) != 0) {\r
	163	HashInterfaceHob->HashInterface[Index].HashInit (&HashCtx[Index]);\r
	164	}\r
	165	}\r
	166	\r
	167	*HashHandle = (HASH_HANDLE)HashCtx;\r
	168	\r
	169	return EFI_SUCCESS;\r
	170	}\r
	171	\r
	172	/**\r
	173	Update hash sequence data.\r
	174	\r
	175	@param HashHandle Hash handle.\r
	176	@param DataToHash Data to be hashed.\r
	177	@param DataToHashLen Data size.\r
	178	\r
	179	@retval EFI_SUCCESS Hash sequence updated.\r
	180	**/\r
	181	EFI_STATUS\r
	182	EFIAPI\r
	183	HashUpdate (\r
	184	IN HASH_HANDLE HashHandle,\r
	185	IN VOID *DataToHash,\r
	186	IN UINTN DataToHashLen\r
	187	)\r
	188	{\r
	189	HASH_INTERFACE_HOB *HashInterfaceHob;\r
	190	HASH_HANDLE *HashCtx;\r
	191	UINTN Index;\r
	192	UINT32 HashMask;\r
	193	\r
	194	HashInterfaceHob = InternalGetHashInterfaceHob (&gEfiCallerIdGuid);\r
	195	if (HashInterfaceHob == NULL) {\r
	196	return EFI_UNSUPPORTED;\r
	197	}\r
	198	\r
	199	if (HashInterfaceHob->HashInterfaceCount == 0) {\r
	200	return EFI_UNSUPPORTED;\r
	201	}\r
	202	\r
	203	CheckSupportedHashMaskMismatch (HashInterfaceHob);\r
	204	\r
	205	HashCtx = (HASH_HANDLE *)HashHandle;\r
	206	\r
	207	for (Index = 0; Index < HashInterfaceHob->HashInterfaceCount; Index++) {\r
	208	HashMask = Tpm2GetHashMaskFromAlgo (&HashInterfaceHob->HashInterface[Index].HashGuid);\r
	209	if ((HashMask & PcdGet32 (PcdTpm2HashMask)) != 0) {\r
	210	HashInterfaceHob->HashInterface[Index].HashUpdate (HashCtx[Index], DataToHash, DataToHashLen);\r
	211	}\r
	212	}\r
	213	\r
	214	return EFI_SUCCESS;\r
	215	}\r
	216	\r
	217	/**\r
	218	Hash sequence complete and extend to PCR.\r
	219	\r
	220	@param HashHandle Hash handle.\r
	221	@param PcrIndex PCR to be extended.\r
	222	@param DataToHash Data to be hashed.\r
	223	@param DataToHashLen Data size.\r
	224	@param DigestList Digest list.\r
	225	\r
	226	@retval EFI_SUCCESS Hash sequence complete and DigestList is returned.\r
	227	**/\r
	228	EFI_STATUS\r
	229	EFIAPI\r
	230	HashCompleteAndExtend (\r
	231	IN HASH_HANDLE HashHandle,\r
	232	IN TPMI_DH_PCR PcrIndex,\r
	233	IN VOID *DataToHash,\r
	234	IN UINTN DataToHashLen,\r
	235	OUT TPML_DIGEST_VALUES *DigestList\r
	236	)\r
	237	{\r
	238	TPML_DIGEST_VALUES Digest;\r
	239	HASH_INTERFACE_HOB *HashInterfaceHob;\r
	240	HASH_HANDLE *HashCtx;\r
	241	UINTN Index;\r
	242	EFI_STATUS Status;\r
	243	UINT32 HashMask;\r
	244	\r
	245	HashInterfaceHob = InternalGetHashInterfaceHob (&gEfiCallerIdGuid);\r
	246	if (HashInterfaceHob == NULL) {\r
	247	return EFI_UNSUPPORTED;\r
	248	}\r
	249	\r
	250	if (HashInterfaceHob->HashInterfaceCount == 0) {\r
	251	return EFI_UNSUPPORTED;\r
	252	}\r
	253	\r
	254	CheckSupportedHashMaskMismatch (HashInterfaceHob);\r
	255	\r
	256	HashCtx = (HASH_HANDLE *)HashHandle;\r
	257	ZeroMem (DigestList, sizeof(*DigestList));\r
	258	\r
	259	for (Index = 0; Index < HashInterfaceHob->HashInterfaceCount; Index++) {\r
	260	HashMask = Tpm2GetHashMaskFromAlgo (&HashInterfaceHob->HashInterface[Index].HashGuid);\r
	261	if ((HashMask & PcdGet32 (PcdTpm2HashMask)) != 0) {\r
	262	HashInterfaceHob->HashInterface[Index].HashUpdate (HashCtx[Index], DataToHash, DataToHashLen);\r
	263	HashInterfaceHob->HashInterface[Index].HashFinal (HashCtx[Index], &Digest);\r
	264	Tpm2SetHashToDigestList (DigestList, &Digest);\r
	265	}\r
	266	}\r
	267	\r
	268	FreePool (HashCtx);\r
	269	\r
	270	Status = Tpm2PcrExtend (\r
	271	PcrIndex,\r
	272	DigestList\r
	273	);\r
	274	return Status;\r
	275	}\r
	276	\r
	277	/**\r
	278	Hash data and extend to PCR.\r
	279	\r
	280	@param PcrIndex PCR to be extended.\r
	281	@param DataToHash Data to be hashed.\r
	282	@param DataToHashLen Data size.\r
	283	@param DigestList Digest list.\r
	284	\r
	285	@retval EFI_SUCCESS Hash data and DigestList is returned.\r
	286	**/\r
	287	EFI_STATUS\r
	288	EFIAPI\r
	289	HashAndExtend (\r
	290	IN TPMI_DH_PCR PcrIndex,\r
	291	IN VOID *DataToHash,\r
	292	IN UINTN DataToHashLen,\r
	293	OUT TPML_DIGEST_VALUES *DigestList\r
	294	)\r
	295	{\r
	296	HASH_INTERFACE_HOB *HashInterfaceHob;\r
	297	HASH_HANDLE HashHandle;\r
	298	EFI_STATUS Status;\r
	299	\r
	300	HashInterfaceHob = InternalGetHashInterfaceHob (&gEfiCallerIdGuid);\r
	301	if (HashInterfaceHob == NULL) {\r
	302	return EFI_UNSUPPORTED;\r
	303	}\r
	304	\r
	305	if (HashInterfaceHob->HashInterfaceCount == 0) {\r
	306	return EFI_UNSUPPORTED;\r
	307	}\r
	308	\r
	309	CheckSupportedHashMaskMismatch (HashInterfaceHob);\r
	310	\r
	311	HashStart (&HashHandle);\r
	312	HashUpdate (HashHandle, DataToHash, DataToHashLen);\r
	313	Status = HashCompleteAndExtend (HashHandle, PcrIndex, NULL, 0, DigestList);\r
	314	\r
	315	return Status;\r
	316	}\r
	317	\r
	318	/**\r
	319	This service register Hash.\r
	320	\r
	321	@param HashInterface Hash interface\r
	322	\r
	323	@retval EFI_SUCCESS This hash interface is registered successfully.\r
	324	@retval EFI_UNSUPPORTED System does not support register this interface.\r
	325	@retval EFI_ALREADY_STARTED System already register this interface.\r
	326	**/\r
	327	EFI_STATUS\r
	328	EFIAPI\r
	329	RegisterHashInterfaceLib (\r
	330	IN HASH_INTERFACE *HashInterface\r
	331	)\r
	332	{\r
	333	UINTN Index;\r
	334	HASH_INTERFACE_HOB *HashInterfaceHob;\r
	335	UINT32 HashMask;\r
	336	EFI_STATUS Status;\r
	337	\r
	338	//\r
	339	// Check allow\r
	340	//\r
	341	HashMask = Tpm2GetHashMaskFromAlgo (&HashInterface->HashGuid);\r
	342	if ((HashMask & PcdGet32 (PcdTpm2HashMask)) == 0) {\r
	343	return EFI_UNSUPPORTED;\r
	344	}\r
	345	\r
	346	HashInterfaceHob = InternalGetHashInterfaceHob (&gEfiCallerIdGuid);\r
	347	if (HashInterfaceHob == NULL) {\r
	348	HashInterfaceHob = InternalCreateHashInterfaceHob (&gEfiCallerIdGuid);\r
	349	if (HashInterfaceHob == NULL) {\r
	350	return EFI_OUT_OF_RESOURCES;\r
	351	}\r
	352	}\r
	353	\r
	354	if (HashInterfaceHob->HashInterfaceCount >= HASH_COUNT) {\r
	355	return EFI_OUT_OF_RESOURCES;\r
	356	}\r
	357	\r
	358	//\r
	359	// Check duplication\r
	360	//\r
	361	for (Index = 0; Index < HashInterfaceHob->HashInterfaceCount; Index++) {\r
	362	if (CompareGuid (&HashInterfaceHob->HashInterface[Index].HashGuid, &HashInterface->HashGuid)) {\r
	363	DEBUG ((DEBUG_ERROR, "Hash Interface (%g) has been registered\n", &HashInterface->HashGuid));\r
	364	return EFI_ALREADY_STARTED;\r
	365	}\r
	366	}\r
	367	\r
	368	//\r
	369	// Record hash algorithm bitmap of CURRENT module which consumes HashLib.\r
	370	//\r
	371	HashInterfaceHob->SupportedHashMask = PcdGet32 (PcdTcg2HashAlgorithmBitmap) \| HashMask;\r
	372	Status = PcdSet32S (PcdTcg2HashAlgorithmBitmap, HashInterfaceHob->SupportedHashMask);\r
	373	ASSERT_EFI_ERROR (Status);\r
	374	\r
	375	CopyMem (&HashInterfaceHob->HashInterface[HashInterfaceHob->HashInterfaceCount], HashInterface, sizeof(*HashInterface));\r
	376	HashInterfaceHob->HashInterfaceCount ++;\r
	377	\r
	378	return EFI_SUCCESS;\r
	379	}\r
	380	\r
	381	/**\r
	382	The constructor function of HashLibBaseCryptoRouterPei.\r
	383	\r
	384	@param FileHandle The handle of FFS header the loaded driver.\r
	385	@param PeiServices The pointer to the PEI services.\r
	386	\r
	387	@retval EFI_SUCCESS The constructor executes successfully.\r
	388	@retval EFI_OUT_OF_RESOURCES There is no enough resource for the constructor.\r
	389	\r
	390	**/\r
	391	EFI_STATUS\r
	392	EFIAPI\r
	393	HashLibBaseCryptoRouterPeiConstructor (\r
	394	IN EFI_PEI_FILE_HANDLE FileHandle,\r
	395	IN CONST EFI_PEI_SERVICES **PeiServices\r
	396	)\r
	397	{\r
	398	EFI_STATUS Status;\r
	399	HASH_INTERFACE_HOB *HashInterfaceHob;\r
	400	\r
	401	HashInterfaceHob = InternalGetHashInterfaceHob (&gZeroGuid);\r
	402	if (HashInterfaceHob == NULL) {\r
	403	//\r
	404	// No HOB with gZeroGuid Identifier has been created,\r
	405	// this is FIRST module which consumes HashLib.\r
	406	// Create the HOB with gZeroGuid Identifier.\r
	407	//\r
	408	HashInterfaceHob = InternalCreateHashInterfaceHob (&gZeroGuid);\r
	409	if (HashInterfaceHob == NULL) {\r
	410	return EFI_OUT_OF_RESOURCES;\r
	411	}\r
	412	} else {\r
	413	//\r
	414	// Record hash algorithm bitmap of LAST module which also consumes HashLib.\r
	415	//\r
	416	HashInterfaceHob->SupportedHashMask = PcdGet32 (PcdTcg2HashAlgorithmBitmap);\r
	417	}\r
	418	\r
	419	HashInterfaceHob = InternalGetHashInterfaceHob (&gEfiCallerIdGuid);\r
	420	if (HashInterfaceHob != NULL) {\r
	421	//\r
	422	// In PEI phase, some modules may call RegisterForShadow and will be\r
	423	// shadowed and executed again after memory is discovered.\r
	424	// This is the second execution of this module, clear the hash interface\r
	425	// information registered at its first execution.\r
	426	//\r
	427	ZeroMem (&HashInterfaceHob->HashInterface, sizeof (HashInterfaceHob->HashInterface));\r
	428	HashInterfaceHob->HashInterfaceCount = 0;\r
	429	HashInterfaceHob->SupportedHashMask = 0;\r
	430	}\r
	431	\r
	432	//\r
	433	// Set PcdTcg2HashAlgorithmBitmap to 0 in CONSTRUCTOR for CURRENT module.\r
	434	//\r
	435	Status = PcdSet32S (PcdTcg2HashAlgorithmBitmap, 0);\r
	436	ASSERT_EFI_ERROR (Status);\r
	437	\r
	438	return EFI_SUCCESS;\r
	439	}\r