blob: b350b04ebd90c010cb5f3e183c6422b0308e0313 (
plain)
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
|
/** @file
NULL PlatformSecureLib instance does NOT really detect whether a physical present
user exists but return TRUE directly. This instance can be used to verify security
related features during platform enabling and development. It should be replaced
by a platform-specific method(e.g. Button pressed) in a real platform for product.
Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Uefi/UefiBaseType.h>
BOOLEAN mUserPhysicalPresence = FALSE;
/**
This function provides a platform-specific method to detect whether the platform
is operating by a physically present user.
Programmatic changing of platform security policy (such as disable Secure Boot,
or switch between Standard/Custom Secure Boot mode) MUST NOT be possible during
Boot Services or after exiting EFI Boot Services. Only a physically present user
is allowed to perform these operations.
NOTE THAT: This function cannot depend on any EFI Variable Service since they are
not available when this function is called in AuthenticateVariable driver.
@retval TRUE The platform is operated by a physically present user.
@retval FALSE The platform is NOT operated by a physically present user.
**/
BOOLEAN
EFIAPI
UserPhysicalPresent (
VOID
)
{
return mUserPhysicalPresence;
}
/**
Save user physical presence state from a PCD to mUserPhysicalPresence.
@retval EFI_SUCCESS PcdUserPhysicalPresence is got successfully.
**/
RETURN_STATUS
EFIAPI
PlatformSecureLibNullConstructor (
VOID
)
{
mUserPhysicalPresence = PcdGetBool (PcdUserPhysicalPresence);
return RETURN_SUCCESS;
}
|