--- /dev/null
+/** @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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