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/** @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;
}
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