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/** @file
File defines the Sec routines for the AMD SEV
Copyright (c) 2021, Advanced Micro Devices, Inc. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef _AMD_SEV_SEC_INTERNAL_H__
#define _AMD_SEV_SEC_INTERNAL_H__
/**
Handle an SEV-ES/GHCB protocol check failure.
Notify the hypervisor using the VMGEXIT instruction that the SEV-ES guest
wishes to be terminated.
@param[in] ReasonCode Reason code to provide to the hypervisor for the
termination request.
**/
VOID
SevEsProtocolFailure (
IN UINT8 ReasonCode
);
/**
Validate the SEV-ES/GHCB protocol level.
Verify that the level of SEV-ES/GHCB protocol supported by the hypervisor
and the guest intersect. If they don't intersect, request termination.
**/
VOID
SevEsProtocolCheck (
VOID
);
/**
Determine if the SEV is active.
During the early booting, GuestType is set in the work area. Verify that it
is an SEV guest.
@retval TRUE SEV is enabled
@retval FALSE SEV is not enabled
**/
BOOLEAN
IsSevGuest (
VOID
);
/**
Determine if SEV-ES is active.
During early booting, SEV-ES support code will set a flag to indicate that
SEV-ES is enabled. Return the value of this flag as an indicator that SEV-ES
is enabled.
@retval TRUE SEV-ES is enabled
@retval FALSE SEV-ES is not enabled
**/
BOOLEAN
SevEsIsEnabled (
VOID
);
/**
Validate System RAM used for decompressing the PEI and DXE firmware volumes
when SEV-SNP is active. The PCDs SecValidatedStart and SecValidatedEnd are
set in OvmfPkg/Include/Fdf/FvmainCompactScratchEnd.fdf.inc.
**/
VOID
SecValidateSystemRam (
VOID
);
/**
Determine if SEV-SNP is active.
@retval TRUE SEV-SNP is enabled
@retval FALSE SEV-SNP is not enabled
**/
BOOLEAN
SevSnpIsEnabled (
VOID
);
#endif
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