2 EFI PEI Core Security services
4 Copyright (c) 2006, Intel Corporation
5 All rights reserved. This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
19 Provide a callback for when the security PPI is installed.
21 @param PeiServices - The PEI core services table.
22 @param NotifyDescriptor - The descriptor for the notification event.
23 @param Ppi - Pointer to the PPI in question.
25 @return Always success
30 SecurityPpiNotifyCallback (
31 IN EFI_PEI_SERVICES
**PeiServices
,
32 IN EFI_PEI_NOTIFY_DESCRIPTOR
*NotifyDescriptor
,
36 STATIC EFI_PEI_NOTIFY_DESCRIPTOR mNotifyList
= {
37 EFI_PEI_PPI_DESCRIPTOR_NOTIFY_DISPATCH
| EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST
,
38 &gEfiPeiSecurity2PpiGuid
,
39 SecurityPpiNotifyCallback
44 Initialize the security services.
47 @param PeiServices - The PEI core services table.
48 @param OldCoreData - Pointer to the old core data.
49 NULL if being run in non-permament memory mode.
53 InitializeSecurityServices (
54 IN EFI_PEI_SERVICES
**PeiServices
,
55 IN PEI_CORE_INSTANCE
*OldCoreData
58 if (OldCoreData
== NULL
) {
59 PeiServicesNotifyPpi (&mNotifyList
);
66 Provide a callback for when the security PPI is installed.
68 @param PeiServices - The PEI core services table.
69 @param NotifyDescriptor - The descriptor for the notification event.
70 @param Ppi - Pointer to the PPI in question.
72 @return Always success
77 SecurityPpiNotifyCallback (
78 IN EFI_PEI_SERVICES
**PeiServices
,
79 IN EFI_PEI_NOTIFY_DESCRIPTOR
*NotifyDescriptor
,
83 PEI_CORE_INSTANCE
*PrivateData
;
86 // Get PEI Core private data
88 PrivateData
= PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices
);
91 // If there isn't a security PPI installed, use the one from notification
93 if (PrivateData
->PrivateSecurityPpi
== NULL
) {
94 PrivateData
->PrivateSecurityPpi
= (EFI_PEI_SECURITY2_PPI
*)Ppi
;
101 Provide a callout to the security verification service.
104 @param PrivateData PeiCore's private data structure
105 @param VolumeHandle Handle of FV
106 @param FileHandle Handle of PEIM's ffs
108 @retval EFI_SUCCESS Image is OK
109 @retval EFI_SECURITY_VIOLATION Image is illegal
114 IN PEI_CORE_INSTANCE
*PrivateData
,
115 IN EFI_PEI_FV_HANDLE VolumeHandle
,
116 IN EFI_PEI_FILE_HANDLE FileHandle
120 UINT32 AuthenticationStatus
;
121 BOOLEAN DeferExection
;
124 // Set a default authentication state
126 AuthenticationStatus
= 0;
128 if (PrivateData
->PrivateSecurityPpi
== NULL
) {
129 Status
= EFI_NOT_FOUND
;
132 // Check to see if the image is OK
134 Status
= PrivateData
->PrivateSecurityPpi
->AuthenticationState (
135 (CONST EFI_PEI_SERVICES
**) &PrivateData
->PS
,
136 PrivateData
->PrivateSecurityPpi
,
137 AuthenticationStatus
,
143 Status
= EFI_SECURITY_VIOLATION
;
151 Verify a Firmware volume.
153 @param CurrentFvAddress - Pointer to the current Firmware Volume under consideration
155 @retval EFI_SUCCESS - Firmware Volume is legal
156 @retval EFI_SECURITY_VIOLATION - Firmware Volume fails integrity test
161 IN EFI_FIRMWARE_VOLUME_HEADER
*CurrentFvAddress
165 // Right now just pass the test. Future can authenticate and/or check the
166 // FV-header or other metric for goodness of binary.