/** @file
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NULL PlatformPasswordLib instance does NOT really detect whether the password is cleared
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but returns the PCD value directly. This instance can be used to verify security
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related features during platform enabling and development. It should be replaced
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by a platform-specific method(e.g. Button pressed) in a real platform for product.
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Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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BOOLEAN mPasswordCleared = FALSE;
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/**
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This function is called at password driver entrypoint.
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This function should be called only once, to clear the password.
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This function provides a way to reset the password, just in case
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the platform owner forgets the password.
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The platform should provide a secure way to make sure
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only the platform owner is allowed to clear password.
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Once the password is cleared, the platform should provide a way
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to set a new password.
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@retval TRUE There is a platform request to clear the password.
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@retval FALSE There is no platform request to clear the password.
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**/
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BOOLEAN
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EFIAPI
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IsPasswordCleared (
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VOID
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)
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{
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return mPasswordCleared;
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}
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/**
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This function is called if the password driver finds that the password is not enrolled,
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when the password is required to input.
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This function should return the action according to platform policy.
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@retval TRUE The caller should force the user to enroll the password.
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@retval FALSE The caller may skip the password enroll.
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**/
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BOOLEAN
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EFIAPI
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NeedEnrollPassword (
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VOID
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)
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{
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return FALSE;
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}
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/**
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Save password clear state from a PCD to mPasswordCleared.
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@param ImageHandle ImageHandle of the loaded driver.
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@param SystemTable Pointer to the EFI System Table.
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@retval EFI_SUCCESS PcdPasswordCleared is got successfully.
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**/
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EFI_STATUS
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EFIAPI
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PlatformPasswordLibNullConstructor (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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mPasswordCleared = PcdGetBool(PcdPasswordCleared);
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return EFI_SUCCESS;
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}
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