From d51ffc1fca4fa011964911ae2ebdb9f6dba413b5 Mon Sep 17 00:00:00 2001 From: lgao4 Date: Wed, 17 Oct 2007 07:52:02 +0000 Subject: Rename Crc32GuidedSectionExtractLib to DxeCrc32GuidedSectionExtractLib. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4156 6f19259b-4bc3-4df7-8a09-765794883524 --- .../DxeCrc32GuidedSectionExtractLib.c | 166 +++++++++++++++++++++ .../DxeCrc32GuidedSectionExtractLib.inf | 48 ++++++ 2 files changed, 214 insertions(+) create mode 100644 MdeModulePkg/Library/DxeCrc32GuidedSectionExtractLib/DxeCrc32GuidedSectionExtractLib.c create mode 100644 MdeModulePkg/Library/DxeCrc32GuidedSectionExtractLib/DxeCrc32GuidedSectionExtractLib.inf (limited to 'MdeModulePkg/Library/DxeCrc32GuidedSectionExtractLib') diff --git a/MdeModulePkg/Library/DxeCrc32GuidedSectionExtractLib/DxeCrc32GuidedSectionExtractLib.c b/MdeModulePkg/Library/DxeCrc32GuidedSectionExtractLib/DxeCrc32GuidedSectionExtractLib.c new file mode 100644 index 0000000000..6deb8dc6d2 --- /dev/null +++ b/MdeModulePkg/Library/DxeCrc32GuidedSectionExtractLib/DxeCrc32GuidedSectionExtractLib.c @@ -0,0 +1,166 @@ +/*++ + +Copyright (c) 2007, Intel Corporation +All rights reserved. This program and the accompanying materials +are licensed and made available under the terms and conditions of the BSD License +which accompanies this distribution. The full text of the license may be found at +http://opensource.org/licenses/bsd-license.php + +THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + +Module Name: + + DxeCrc32GuidedSectionExtractLib.c + +Abstract: + + Implements GUIDed section extraction protocol interface with + a specific GUID: CRC32. + + Please refer to the Framewokr Firmware Volume Specification 0.9. + +--*/ + +#include +#include +#include +#include +#include +#include + +typedef struct { + EFI_GUID_DEFINED_SECTION GuidedSectionHeader; + UINT32 CRC32Checksum; +} CRC32_SECTION_HEADER; + +EFI_STATUS +EFIAPI +Crc32GuidedSectionGetInfo ( + IN CONST VOID *InputSection, + OUT UINT32 *OutputBufferSize, + OUT UINT32 *ScratchBufferSize, + OUT UINT16 *SectionAttribute + ) +/*++ + +Routine Description: + + The implementation of Crc32 guided section GetInfo(). + +Arguments: + InputSection Buffer containing the input GUIDed section to be processed. + OutputBufferSize The size of OutputBuffer. + ScratchBufferSize The size of ScratchBuffer. + SectionAttribute The attribute of the input guided section. + +Returns: + + EFI_SUCCESS - The size of destination buffer and the size of scratch buffer are successull retrieved. + EFI_INVALID_PARAMETER - The source data is corrupted + +--*/ +{ + // + // Retrieve the size and attribute of the input section data. + // + *SectionAttribute = ((EFI_GUID_DEFINED_SECTION *) InputSection)->Attributes; + *ScratchBufferSize = 0; + *OutputBufferSize = *(UINT32 *) (((EFI_COMMON_SECTION_HEADER *) InputSection)->Size) & 0x00ffffff; + *OutputBufferSize -= ((EFI_GUID_DEFINED_SECTION *) InputSection)->DataOffset; + + return EFI_SUCCESS; +} + +EFI_STATUS +EFIAPI +Crc32GuidedSectionHandler ( + IN CONST VOID *InputSection, + OUT VOID **OutputBuffer, + IN VOID *ScratchBuffer, OPTIONAL + OUT UINT32 *AuthenticationStatus + ) +/*++ + +Routine Description: + + The implementation of Crc32 Guided section extraction. + +Arguments: + InputSection Buffer containing the input GUIDed section to be processed. + OutputBuffer OutputBuffer to point to the start of the section's contents. + if guided data is not prcessed. Otherwise, + OutputBuffer to contain the output data, which is allocated by the caller. + ScratchBuffer A pointer to a caller-allocated buffer for function internal use. + AuthenticationStatus A pointer to a caller-allocated UINT32 that indicates the + authentication status of the output buffer. + +Returns: + + EFI_SUCCESS - Decompression is successfull + EFI_INVALID_PARAMETER - The source data is corrupted + +--*/ +{ + EFI_STATUS Status; + CRC32_SECTION_HEADER *Crc32SectionHeader; + UINT32 Crc32Checksum; + UINT32 OutputBufferSize; + VOID *DummyInterface; + + Crc32Checksum = 0; + // + // Points to the Crc32 section header + // + Crc32SectionHeader = (CRC32_SECTION_HEADER *) InputSection; + *OutputBuffer = (UINT8 *) InputSection + Crc32SectionHeader->GuidedSectionHeader.DataOffset; + OutputBufferSize = *(UINT32 *) (((EFI_COMMON_SECTION_HEADER *) InputSection)->Size) & 0x00ffffff; + OutputBufferSize -= Crc32SectionHeader->GuidedSectionHeader.DataOffset; + + // + // Implictly CRC32 GUIDed section should have STATUS_VALID bit set + // + ASSERT (Crc32SectionHeader->GuidedSectionHeader.Attributes & EFI_GUIDED_SECTION_AUTH_STATUS_VALID); + *AuthenticationStatus = EFI_AUTH_STATUS_IMAGE_SIGNED; + + // + // Check whether there exists EFI_SECURITY_POLICY_PROTOCOL_GUID. + // + Status = gBS->LocateProtocol (&gEfiSecurityPolicyProtocolGuid, NULL, &DummyInterface); + if (!EFI_ERROR (Status)) { + *AuthenticationStatus |= EFI_AUTH_STATUS_PLATFORM_OVERRIDE; + } else { + // + // Calculate CRC32 Checksum of Image + // + Status = gBS->CalculateCrc32 (*OutputBuffer, OutputBufferSize, &Crc32Checksum); + if (Status == EFI_SUCCESS) { + if (Crc32Checksum != Crc32SectionHeader->CRC32Checksum) { + *AuthenticationStatus |= EFI_AUTH_STATUS_TEST_FAILED; + } + } else { + *AuthenticationStatus |= EFI_AUTH_STATUS_NOT_TESTED; + } + } + + return EFI_SUCCESS; +} + +/** + Register Crc32 section handler. + + @retval RETURN_SUCCESS Register successfully. + @retval RETURN_OUT_OF_RESOURCES No enough memory to store this handler. +**/ +EFI_STATUS +EFIAPI +DxeCrc32GuidedSectionExtractLibConstructor ( + ) +{ + return ExtractGuidedSectionRegisterHandlers ( + &gEfiCrc32GuidedSectionExtractionProtocolGuid, + Crc32GuidedSectionGetInfo, + Crc32GuidedSectionHandler + ); +} + diff --git a/MdeModulePkg/Library/DxeCrc32GuidedSectionExtractLib/DxeCrc32GuidedSectionExtractLib.inf b/MdeModulePkg/Library/DxeCrc32GuidedSectionExtractLib/DxeCrc32GuidedSectionExtractLib.inf new file mode 100644 index 0000000000..d5f136de4a --- /dev/null +++ b/MdeModulePkg/Library/DxeCrc32GuidedSectionExtractLib/DxeCrc32GuidedSectionExtractLib.inf @@ -0,0 +1,48 @@ +#/** @file +# Component description file for Crc32SectionExtract library. +# +# Copyright (c) 2006 - 2007, Intel Corporation +# +# All rights reserved. This program and the accompanying materials +# are licensed and made available under the terms and conditions of the BSD License +# which accompanies this distribution. The full text of the license may be found at +# http://opensource.org/licenses/bsd-license.php +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +# +# +#**/ + +[Defines] + INF_VERSION = 0x00010005 + BASE_NAME = DxeCrc32GuidedSectionExtractLib + FILE_GUID = 387A2490-81FC-4E7C-8E0A-3E58C30FCD0B + MODULE_TYPE = DXE_DRIVER + VERSION_STRING = 1.0 + EDK_RELEASE_VERSION = 0x00020000 + EFI_SPECIFICATION_VERSION = 0x00020000 + + CONSTRUCTOR = DxeCrc32GuidedSectionExtractLibConstructor + +# +# The following information is for reference only and not required by the build tools. +# +# VALID_ARCHITECTURES = IA32 X64 IPF EBC +# + +[Sources.common] + DxeCrc32GuidedSectionExtractLib.c + +[Packages] + MdePkg/MdePkg.dec + MdeModulePkg/MdeModulePkg.dec + +[LibraryClasses] + ExtractGuidedSectionLib + UefiBootServicesTableLib + DebugLib + +[Protocols] + gEfiCrc32GuidedSectionExtractionProtocolGuid + gEfiSecurityPolicyProtocolGuid + \ No newline at end of file -- cgit v1.2.3