-/** @file\r
- This driver supports platform security service.\r
- \r
- Copyright (c) 2006 - 2007, Intel Corporation \r
- All rights reserved. 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
-\r
-#include "SecurityStub.h"\r
-\r
-//\r
-// Handle for the Security Architectural Protocol instance produced by this driver\r
-//\r
-EFI_HANDLE mSecurityArchProtocolHandle = NULL;\r
-\r
-//\r
-// Security Architectural Protocol instance produced by this driver\r
-//\r
-EFI_SECURITY_ARCH_PROTOCOL mSecurityStub = { \r
- SecurityStubAuthenticateState \r
-};\r
-\r
-\r
-/**\r
- The EFI_SECURITY_ARCH_PROTOCOL (SAP) is used to abstract platform-specific \r
- policy from the DXE core response to an attempt to use a file that returns a \r
- given status for the authentication check from the section extraction protocol. \r
-\r
- The possible responses in a given SAP implementation may include locking \r
- flash upon failure to authenticate, attestation logging for all signed drivers, \r
- and other exception operations. The File parameter allows for possible logging \r
- within the SAP of the driver.\r
-\r
- If File is NULL, then EFI_INVALID_PARAMETER is returned.\r
-\r
- If the file specified by File with an authentication status specified by \r
- AuthenticationStatus is safe for the DXE Core to use, then EFI_SUCCESS is returned.\r
-\r
- If the file specified by File with an authentication status specified by \r
- AuthenticationStatus is not safe for the DXE Core to use under any circumstances, \r
- then EFI_ACCESS_DENIED is returned.\r
-\r
- If the file specified by File with an authentication status specified by \r
- AuthenticationStatus is not safe for the DXE Core to use right now, but it \r
- might be possible to use it at a future time, then EFI_SECURITY_VIOLATION is \r
- returned.\r
-\r
- @param This The EFI_SECURITY_ARCH_PROTOCOL instance.\r
- @param AuthenticationStatus \r
- This is the authentication type returned from the Section\r
- Extraction protocol. See the Section Extraction Protocol\r
- Specification for details on this type.\r
- @param File This is a pointer to the device path of the file that is\r
- being dispatched. This will optionally be used for logging.\r
-\r
- @retval EFI_SUCCESS The file specified by File did authenticate, and the\r
- platform policy dictates that the DXE Core may use File.\r
- @retval EFI_INVALID_PARAMETER Driver is NULL.\r
- @retval EFI_SECURITY_VIOLATION The file specified by File did not authenticate, and\r
- the platform policy dictates that File should be placed\r
- in the untrusted state. A file may be promoted from\r
- the untrusted to the trusted state at a future time\r
- with a call to the Trust() DXE Service.\r
- @retval EFI_ACCESS_DENIED The file specified by File did not authenticate, and\r
- the platform policy dictates that File should not be\r
- used for any purpose.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-SecurityStubAuthenticateState (\r
- IN EFI_SECURITY_ARCH_PROTOCOL *This,\r
- IN UINT32 AuthenticationStatus,\r
- IN EFI_DEVICE_PATH_PROTOCOL *File\r
- )\r
-{\r
- if (File == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-\r
-/**\r
- The user Entry Point for DXE driver. The user code starts with this function\r
- as the real entry point for the image goes into a library that calls this \r
- function.\r
-\r
- @param[in] ImageHandle The firmware allocated handle for the EFI image. \r
- @param[in] SystemTable A pointer to the EFI System Table.\r
- \r
- @retval EFI_SUCCESS The entry point is executed successfully.\r
- @retval other Some error occurs when executing this entry point.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-SecurityStubInitialize (\r
- IN EFI_HANDLE ImageHandle,\r
- IN EFI_SYSTEM_TABLE *SystemTable\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- //\r
- // Make sure the Security Architectural Protocol is not already installed in the system\r
- //\r
- ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gEfiSecurityArchProtocolGuid);\r
-\r
- //\r
- // Install the Security Architectural Protocol onto a new handle\r
- //\r
- Status = gBS->InstallMultipleProtocolInterfaces (\r
- &mSecurityArchProtocolHandle,\r
- &gEfiSecurityArchProtocolGuid,\r
- &mSecurityStub,\r
- NULL\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- return Status;\r
-}\r
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