IN VOID *SectionStream,\r
IN UINTN SectionStreamLength\r
);\r
- \r
+\r
+EFI_STATUS\r
+CustomDecompressExtractSection (\r
+ IN CONST EFI_GUIDED_SECTION_EXTRACTION_PROTOCOL *This,\r
+ IN CONST VOID *InputSection,\r
+ OUT VOID **OutputBuffer,\r
+ OUT UINTN *OutputSize,\r
+ OUT UINT32 *AuthenticationStatus\r
+ ); \r
//\r
// Module globals\r
//\r
CloseSectionStream\r
};\r
\r
+EFI_GUIDED_SECTION_EXTRACTION_PROTOCOL mCustomDecompressExtraction = {\r
+ CustomDecompressExtractSection\r
+};\r
\r
EFI_STATUS\r
EFIAPI\r
--*/\r
{\r
EFI_STATUS Status;\r
+ EFI_GUID **DecompressGuidList;\r
+ UINT32 DecompressMethodNumber;\r
\r
//\r
// Install SEP to a new handle\r
);\r
ASSERT_EFI_ERROR (Status);\r
\r
+ //\r
+ // Get custom decompress method guid list \r
+ //\r
+ DecompressGuidList = NULL;\r
+ DecompressMethodNumber = 0;\r
+ Status = CustomDecompressGetAlgorithms (DecompressGuidList, &DecompressMethodNumber);\r
+ if (Status == EFI_OUT_OF_RESOURCES) {\r
+ DecompressGuidList = (EFI_GUID **) CoreAllocateBootServicesPool (DecompressMethodNumber * sizeof (EFI_GUID *));\r
+ ASSERT (DecompressGuidList != NULL);\r
+ Status = CustomDecompressGetAlgorithms (DecompressGuidList, &DecompressMethodNumber);\r
+ }\r
+ ASSERT_EFI_ERROR(Status);\r
+\r
+ //\r
+ // Install custom decompress guided extraction protocol \r
+ //\r
+ while (DecompressMethodNumber-- > 0) {\r
+ Status = CoreInstallProtocolInterface (\r
+ &mSectionExtractionHandle,\r
+ DecompressGuidList [DecompressMethodNumber],\r
+ EFI_NATIVE_INTERFACE,\r
+ &mCustomDecompressExtraction\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+ }\r
+ \r
+ CoreFreePool (DecompressGuidList);\r
+\r
return Status;\r
}\r
\r
EFI_COMMON_SECTION_HEADER *SectionHeader;\r
EFI_COMPRESSION_SECTION *CompressionHeader;\r
EFI_GUID_DEFINED_SECTION *GuidedHeader;\r
- EFI_TIANO_DECOMPRESS_PROTOCOL *Decompress;\r
+ EFI_DECOMPRESS_PROTOCOL *Decompress;\r
EFI_GUIDED_SECTION_EXTRACTION_PROTOCOL *GuidedExtraction;\r
VOID *NewStreamBuffer;\r
VOID *ScratchBuffer;\r
ASSERT (FALSE);\r
return FALSE;\r
}\r
+\r
+/**\r
+ The ExtractSection() function processes the input section and\r
+ allocates a buffer from the pool in which it returns the section\r
+ contents. If the section being extracted contains\r
+ authentication information (the section's\r
+ GuidedSectionHeader.Attributes field has the\r
+ EFI_GUIDED_SECTION_AUTH_STATUS_VALID bit set), the values\r
+ returned in AuthenticationStatus must reflect the results of\r
+ the authentication operation. Depending on the algorithm and\r
+ size of the encapsulated data, the time that is required to do\r
+ a full authentication may be prohibitively long for some\r
+ classes of systems. To indicate this, use\r
+ EFI_SECURITY_POLICY_PROTOCOL_GUID, which may be published by\r
+ the security policy driver (see the Platform Initialization\r
+ Driver Execution Environment Core Interface Specification for\r
+ more details and the GUID definition). If the\r
+ EFI_SECURITY_POLICY_PROTOCOL_GUID exists in the handle\r
+ database, then, if possible, full authentication should be\r
+ skipped and the section contents simply returned in the\r
+ OutputBuffer. In this case, the\r
+ EFI_AUTH_STATUS_PLATFORM_OVERRIDE bit AuthenticationStatus\r
+ must be set on return. ExtractSection() is callable only from\r
+ TPL_NOTIFY and below. Behavior of ExtractSection() at any\r
+ EFI_TPL above TPL_NOTIFY is undefined. Type EFI_TPL is\r
+ defined in RaiseTPL() in the UEFI 2.0 specification.\r
+\r
+ \r
+ @param This Indicates the\r
+ EFI_GUIDED_SECTION_EXTRACTION_PROTOCOL instance.\r
+ \r
+ @param InputSection Buffer containing the input GUIDed section\r
+ to be processed. OutputBuffer OutputBuffer\r
+ is allocated from boot services pool\r
+ memory and contains the new section\r
+ stream. The caller is responsible for\r
+ freeing this buffer.\r
+\r
+ @param OutputSize A pointer to a caller-allocated UINTN in\r
+ which the size of OutputBuffer allocation\r
+ is stored. If the function returns\r
+ anything other than EFI_SUCCESS, the value\r
+ of OutputSize is undefined.\r
+\r
+ @param AuthenticationStatus A pointer to a caller-allocated\r
+ UINT32 that indicates the\r
+ authentication status of the\r
+ output buffer. If the input\r
+ section's\r
+ GuidedSectionHeader.Attributes\r
+ field has the\r
+ EFI_GUIDED_SECTION_AUTH_STATUS_VAL\r
+ bit as clear, AuthenticationStatus\r
+ must return zero. Both local bits\r
+ (19:16) and aggregate bits (3:0)\r
+ in AuthenticationStatus are\r
+ returned by ExtractSection().\r
+ These bits reflect the status of\r
+ the extraction operation. The bit\r
+ pattern in both regions must be\r
+ the same, as the local and\r
+ aggregate authentication statuses\r
+ have equivalent meaning at this\r
+ level. If the function returns\r
+ anything other than EFI_SUCCESS,\r
+ the value of AuthenticationStatus\r
+ is undefined.\r
+\r
+\r
+ @retval EFI_SUCCESS The InputSection was successfully\r
+ processed and the section contents were\r
+ returned.\r
+\r
+ @retval EFI_OUT_OF_RESOURCES The system has insufficient\r
+ resources to process the\r
+ request.\r
+\r
+ @retval EFI_INVALID_PARAMETER The GUID in InputSection does\r
+ not match this instance of the\r
+ GUIDed Section Extraction\r
+ Protocol.\r
+\r
+**/\r
+EFI_STATUS\r
+CustomDecompressExtractSection (\r
+ IN CONST EFI_GUIDED_SECTION_EXTRACTION_PROTOCOL *This,\r
+ IN CONST VOID *InputSection,\r
+ OUT VOID **OutputBuffer,\r
+ OUT UINTN *OutputSize,\r
+ OUT UINT32 *AuthenticationStatus\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ UINT8 *ScratchBuffer;\r
+ UINT32 DestinationSize;\r
+ UINT32 ScratchSize;\r
+ UINT32 SectionLength; \r
+ \r
+ //\r
+ // Set authentic value to zero.\r
+ //\r
+ *AuthenticationStatus = 0;\r
+ //\r
+ // Calculate Section data Size\r
+ //\r
+ SectionLength = *(UINT32 *) (((EFI_COMMON_SECTION_HEADER *) InputSection)->Size) & 0x00ffffff;\r
+ //\r
+ // Get compressed data information\r
+ //\r
+ Status = CustomDecompressGetInfo (\r
+ (GUID *) ((UINT8 *) InputSection + sizeof (EFI_COMMON_SECTION_HEADER)),\r
+ (UINT8 *) InputSection + sizeof (EFI_GUID_DEFINED_SECTION),\r
+ SectionLength - sizeof (EFI_GUID_DEFINED_SECTION),\r
+ &DestinationSize,\r
+ &ScratchSize\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ //\r
+ // GetInfo failed\r
+ //\r
+ DEBUG ((EFI_D_ERROR, "Extract guided section Failed - %r\n", Status));\r
+ return Status;\r
+ }\r
+\r
+ //\r
+ // Allocate scratch buffer\r
+ //\r
+ ScratchBuffer = CoreAllocateBootServicesPool (ScratchSize);\r
+ if (ScratchBuffer == NULL) {\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+ //\r
+ // Allocate destination buffer\r
+ //\r
+ *OutputSize = (UINTN) DestinationSize;\r
+ *OutputBuffer = CoreAllocateBootServicesPool (*OutputSize);\r
+ if (*OutputBuffer == NULL) {\r
+ CoreFreePool (ScratchBuffer);\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+\r
+ //\r
+ // Call decompress function\r
+ //\r
+ Status = CustomDecompress (\r
+ (GUID *) ((UINT8 *) InputSection + sizeof (EFI_COMMON_SECTION_HEADER)),\r
+ (UINT8 *) InputSection + sizeof (EFI_GUID_DEFINED_SECTION),\r
+ *OutputBuffer,\r
+ ScratchBuffer\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ //\r
+ // Decompress failed\r
+ //\r
+ CoreFreePool (ScratchBuffer);\r
+ CoreFreePool (*OutputBuffer);\r
+ DEBUG ((EFI_D_ERROR, "Extract guided section Failed - %r\n", Status));\r
+ return Status;\r
+ }\r
+ \r
+ //\r
+ // Free unused scratch buffer.\r
+ //\r
+ CoreFreePool (ScratchBuffer);\r
+ \r
+ return EFI_SUCCESS;\r
+}
\ No newline at end of file
projects / mirror_edk2.git / blobdiff