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 An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.
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 EFI_PEI_NOTIFY_DESCRIPTOR mNotifyList
= {
37 EFI_PEI_PPI_DESCRIPTOR_NOTIFY_DISPATCH
| EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST
,
38 &gEfiPeiSecurity2PpiGuid
,
39 SecurityPpiNotifyCallback
43 Initialize the security services.
45 @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.
46 @param OldCoreData Pointer to the old core data.
47 NULL if being run in non-permament memory mode.
51 InitializeSecurityServices (
52 IN EFI_PEI_SERVICES
**PeiServices
,
53 IN PEI_CORE_INSTANCE
*OldCoreData
56 if (OldCoreData
== NULL
) {
57 PeiServicesNotifyPpi (&mNotifyList
);
64 Provide a callback for when the security PPI is installed.
65 This routine will cache installed security PPI into PeiCore's private data.
67 @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.
68 @param NotifyDescriptor The descriptor for the notification event.
69 @param Ppi Pointer to the PPI in question.
71 @return Always success
76 SecurityPpiNotifyCallback (
77 IN EFI_PEI_SERVICES
**PeiServices
,
78 IN EFI_PEI_NOTIFY_DESCRIPTOR
*NotifyDescriptor
,
82 PEI_CORE_INSTANCE
*PrivateData
;
85 // Get PEI Core private data
87 PrivateData
= PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices
);
90 // If there isn't a security PPI installed, use the one from notification
92 if (PrivateData
->PrivateSecurityPpi
== NULL
) {
93 PrivateData
->PrivateSecurityPpi
= (EFI_PEI_SECURITY2_PPI
*)Ppi
;
100 Provide a callout to the security verification service.
103 @param PrivateData PeiCore's private data structure
104 @param VolumeHandle Handle of FV
105 @param FileHandle Handle of PEIM's ffs
107 @retval EFI_SUCCESS Image is OK
108 @retval EFI_SECURITY_VIOLATION Image is illegal
109 @retval EFI_NOT_FOUND If security PPI is not installed.
113 IN PEI_CORE_INSTANCE
*PrivateData
,
114 IN EFI_PEI_FV_HANDLE VolumeHandle
,
115 IN EFI_PEI_FILE_HANDLE FileHandle
119 UINT32 AuthenticationStatus
;
120 BOOLEAN DeferExection
;
123 // Set a default authentication state
125 AuthenticationStatus
= 0;
127 if (PrivateData
->PrivateSecurityPpi
== NULL
) {
128 Status
= EFI_NOT_FOUND
;
131 // Check to see if the image is OK
133 Status
= PrivateData
->PrivateSecurityPpi
->AuthenticationState (
134 (CONST EFI_PEI_SERVICES
**) &PrivateData
->PS
,
135 PrivateData
->PrivateSecurityPpi
,
136 AuthenticationStatus
,
142 Status
= EFI_SECURITY_VIOLATION
;
150 Verify a Firmware volume.
152 @param CurrentFvAddress Pointer to the current Firmware Volume under consideration
154 @retval EFI_SUCCESS Firmware Volume is legal
159 IN EFI_FIRMWARE_VOLUME_HEADER
*CurrentFvAddress
163 // Right now just pass the test. Future can authenticate and/or check the
164 // FV-header or other metric for goodness of binary.