PeiMemEncryptSevLibInternal.c File Reference

#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/MemEncryptSevLib.h>
#include <Library/PcdLib.h>
#include <Register/Amd/Cpuid.h>
#include <Register/Amd/Msr.h>
#include <Register/Cpuid.h>
#include <Uefi/UefiBaseType.h>

Go to the source code of this file.

Functions
STATIC SEC_SEV_ES_WORK_AREA *EFIAPI	GetSevEsWorkArea (VOID)
STATIC UINT32 EFIAPI	InternalMemEncryptSevStatus (VOID)
BOOLEAN EFIAPI	MemEncryptSevSnpIsEnabled (VOID)
BOOLEAN EFIAPI	MemEncryptSevEsIsEnabled (VOID)
BOOLEAN EFIAPI	MemEncryptSevIsEnabled (VOID)
UINT64 EFIAPI	MemEncryptSevGetEncryptionMask (VOID)
BOOLEAN EFIAPI	MemEncryptSevEsDebugVirtualizationIsEnabled (VOID)

Detailed Description

Secure Encrypted Virtualization (SEV) library helper function

Copyright (c) 2020, AMD Incorporated. All rights reserved.

SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file PeiMemEncryptSevLibInternal.c.

Function Documentation

GetSevEsWorkArea()

STATIC SEC_SEV_ES_WORK_AREA *EFIAPI GetSevEsWorkArea

(

VOID

)

Read the workarea to determine whether SEV is enabled. If enabled, then return the SevEsWorkArea pointer.

Definition at line 28 of file PeiMemEncryptSevLibInternal.c.

InternalMemEncryptSevStatus()

STATIC UINT32 EFIAPI InternalMemEncryptSevStatus

(

VOID

)

Read the SEV Status MSR value from the workarea

Definition at line 53 of file PeiMemEncryptSevLibInternal.c.

MemEncryptSevEsDebugVirtualizationIsEnabled()

BOOLEAN EFIAPI MemEncryptSevEsDebugVirtualizationIsEnabled

(

VOID

)

Returns a boolean to indicate whether DebugVirtualization is enabled.

Return values

TRUE	DebugVirtualization is enabled
FALSE	DebugVirtualization is not enabled

Definition at line 153 of file PeiMemEncryptSevLibInternal.c.

MemEncryptSevEsIsEnabled()

BOOLEAN EFIAPI MemEncryptSevEsIsEnabled

(

VOID

)

Returns a boolean to indicate whether SEV-ES is enabled.

Return values

TRUE	SEV-ES is enabled
FALSE	SEV-ES is not enabled

Definition at line 94 of file PeiMemEncryptSevLibInternal.c.

MemEncryptSevGetEncryptionMask()

UINT64 EFIAPI MemEncryptSevGetEncryptionMask

(

VOID

)

Returns the SEV encryption mask.

Returns

The SEV pagtable encryption mask

Definition at line 131 of file PeiMemEncryptSevLibInternal.c.

MemEncryptSevIsEnabled()

BOOLEAN EFIAPI MemEncryptSevIsEnabled

(

VOID

)

Returns a boolean to indicate whether SEV is enabled.

Return values

TRUE	SEV is enabled
FALSE	SEV is not enabled

Definition at line 113 of file PeiMemEncryptSevLibInternal.c.

MemEncryptSevSnpIsEnabled()

BOOLEAN EFIAPI MemEncryptSevSnpIsEnabled

(

VOID

)

Returns a boolean to indicate whether SEV-SNP is enabled.

Return values

TRUE	SEV-SNP is enabled
FALSE	SEV-SNP is not enabled

Definition at line 75 of file PeiMemEncryptSevLibInternal.c.