1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/** @file
Provides a helper functions for creating variable authenticated
payloads, signature lists related to secure boot keys.
Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
(C) Copyright 2018 Hewlett Packard Enterprise Development LP<BR>
Copyright (c) 2021, ARM Ltd. All rights reserved.<BR>
Copyright (c) 2021, Semihalf All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef SECURE_BOOT_VARIABLE_LIB_H_
#define SECURE_BOOT_VARIABLE_LIB_H_
/**
Set the platform secure boot mode into "Custom" or "Standard" mode.
@param[in] SecureBootMode New secure boot mode: STANDARD_SECURE_BOOT_MODE or
CUSTOM_SECURE_BOOT_MODE.
@return EFI_SUCCESS The platform has switched to the special mode successfully.
@return other Fail to operate the secure boot mode.
--*/
EFI_STATUS
SetSecureBootMode (
IN UINT8 SecureBootMode
);
/**
Fetches the value of SetupMode variable.
@param[out] SetupMode Pointer to UINT8 for SetupMode output
@retval other Error codes from GetVariable.
--*/
EFI_STATUS
EFIAPI
GetSetupMode (
OUT UINT8 *SetupMode
);
/**
Create a EFI Signature List with data fetched from section specified as a argument.
Found keys are verified using RsaGetPublicKeyFromX509().
@param[in] KeyFileGuid A pointer to to the FFS filename GUID
@param[out] SigListsSize A pointer to size of signature list
@param[out] SigListsOut a pointer to a callee-allocated buffer with signature lists
@retval EFI_SUCCESS Create time based payload successfully.
@retval EFI_NOT_FOUND Section with key has not been found.
@retval EFI_INVALID_PARAMETER Embedded key has a wrong format.
@retval Others Unexpected error happens.
--*/
EFI_STATUS
SecureBootFetchData (
IN EFI_GUID *KeyFileGuid,
OUT UINTN *SigListsSize,
OUT EFI_SIGNATURE_LIST **SigListOut
);
/**
Create a time based data payload by concatenating the EFI_VARIABLE_AUTHENTICATION_2
descriptor with the input data. NO authentication is required in this function.
@param[in, out] DataSize On input, the size of Data buffer in bytes.
On output, the size of data returned in Data
buffer in bytes.
@param[in, out] Data On input, Pointer to data buffer to be wrapped or
pointer to NULL to wrap an empty payload.
On output, Pointer to the new payload date buffer allocated from pool,
it's caller's responsibility to free the memory when finish using it.
@retval EFI_SUCCESS Create time based payload successfully.
@retval EFI_OUT_OF_RESOURCES There are not enough memory resources to create time based payload.
@retval EFI_INVALID_PARAMETER The parameter is invalid.
@retval Others Unexpected error happens.
--*/
EFI_STATUS
CreateTimeBasedPayload (
IN OUT UINTN *DataSize,
IN OUT UINT8 **Data
);
/**
Clears the content of the 'db' variable.
@retval EFI_OUT_OF_RESOURCES If memory allocation for EFI_VARIABLE_AUTHENTICATION_2 fails
while VendorGuid is NULL.
@retval other Errors from GetVariable2(), GetTime() and SetVariable()
--*/
EFI_STATUS
EFIAPI
DeleteDb (
VOID
);
/**
Clears the content of the 'dbx' variable.
@retval EFI_OUT_OF_RESOURCES If memory allocation for EFI_VARIABLE_AUTHENTICATION_2 fails
while VendorGuid is NULL.
@retval other Errors from GetVariable2(), GetTime() and SetVariable()
--*/
EFI_STATUS
EFIAPI
DeleteDbx (
VOID
);
/**
Clears the content of the 'dbt' variable.
@retval EFI_OUT_OF_RESOURCES If memory allocation for EFI_VARIABLE_AUTHENTICATION_2 fails
while VendorGuid is NULL.
@retval other Errors from GetVariable2(), GetTime() and SetVariable()
--*/
EFI_STATUS
EFIAPI
DeleteDbt (
VOID
);
/**
Clears the content of the 'KEK' variable.
@retval EFI_OUT_OF_RESOURCES If memory allocation for EFI_VARIABLE_AUTHENTICATION_2 fails
while VendorGuid is NULL.
@retval other Errors from GetVariable2(), GetTime() and SetVariable()
--*/
EFI_STATUS
EFIAPI
DeleteKEK (
VOID
);
/**
Clears the content of the 'PK' variable.
@retval EFI_OUT_OF_RESOURCES If memory allocation for EFI_VARIABLE_AUTHENTICATION_2 fails
while VendorGuid is NULL.
@retval other Errors from GetVariable2(), GetTime() and SetVariable()
--*/
EFI_STATUS
EFIAPI
DeletePlatformKey (
VOID
);
#endif
|
