#include <IndustryStandard/Q35MchIch9.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/DxeServicesTableLib.h>
#include <Library/MemEncryptSevLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Guid/ConfidentialComputingSevSnpBlob.h>
#include <Library/PcdLib.h>
#include <Pi/PiDxeCis.h>
#include <Protocol/SevMemoryAcceptance.h>
#include <Protocol/MemoryAccept.h>
#include <Uefi/UefiSpec.h>

Macros
#define	EFI_MEMORY_INTERNAL_MASK 0x0700000000000000ULL

Functions
STATIC EFI_STATUS	AllocateConfidentialComputingBlob (OUT CONFIDENTIAL_COMPUTING_SNP_BLOB_LOCATION **CcBlobPtr)

STATIC EFI_STATUS EFIAPI	AmdSevMemoryAccept (IN EDKII_MEMORY_ACCEPT_PROTOCOL *This, IN EFI_PHYSICAL_ADDRESS StartAddress, IN UINTN Size)

STATIC EFI_STATUS	AcceptAllMemory (VOID)

VOID EFIAPI	ResolveUnacceptedMemory (IN EFI_EVENT Event, IN VOID *Context)

STATIC EFI_STATUS EFIAPI	AllowUnacceptedMemory (IN OVMF_SEV_MEMORY_ACCEPTANCE_PROTOCOL *This)

EFI_STATUS EFIAPI	AmdSevDxeEntryPoint (IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *SystemTable)

Variables
STATIC EFI_HANDLE	mAmdSevDxeHandle = NULL

STATIC BOOLEAN	mAcceptAllMemoryAtEBS = TRUE

STATIC EFI_EVENT	mAcceptAllMemoryEvent = NULL

STATIC OVMF_SEV_MEMORY_ACCEPTANCE_PROTOCOL	mMemoryAcceptanceProtocol = { AllowUnacceptedMemory }

STATIC EDKII_MEMORY_ACCEPT_PROTOCOL	mMemoryAcceptProtocol

Detailed Description

AMD Sev Dxe driver. This driver is dispatched early in DXE, due to being list in APRIORI. It clears C-bit from MMIO and NonExistent Memory space when SEV is enabled.

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

Definition in file AmdSevDxe.c.

Macro Definition Documentation

◆ EFI_MEMORY_INTERNAL_MASK

#define EFI_MEMORY_INTERNAL_MASK 0x0700000000000000ULL

Definition at line 29 of file AmdSevDxe.c.

Function Documentation

◆ AcceptAllMemory()

STATIC EFI_STATUS AcceptAllMemory ( VOID )

Definition at line 98 of file AmdSevDxe.c.

◆ AllocateConfidentialComputingBlob()

STATIC EFI_STATUS AllocateConfidentialComputingBlob ( OUT CONFIDENTIAL_COMPUTING_SNP_BLOB_LOCATION ** CcBlobPtr )

Definition at line 33 of file AmdSevDxe.c.

◆ AllowUnacceptedMemory()

STATIC EFI_STATUS EFIAPI AllowUnacceptedMemory ( IN OVMF_SEV_MEMORY_ACCEPTANCE_PROTOCOL * This )

Definition at line 178 of file AmdSevDxe.c.

◆ AmdSevDxeEntryPoint()

EFI_STATUS EFIAPI AmdSevDxeEntryPoint	(	IN EFI_HANDLE	ImageHandle,
		IN EFI_SYSTEM_TABLE *	SystemTable
	)

Definition at line 196 of file AmdSevDxe.c.

◆ AmdSevMemoryAccept()

STATIC EFI_STATUS EFIAPI AmdSevMemoryAccept	(	IN EDKII_MEMORY_ACCEPT_PROTOCOL *	This,
		IN EFI_PHYSICAL_ADDRESS	StartAddress,
		IN UINTN	Size
	)

Definition at line 73 of file AmdSevDxe.c.

◆ ResolveUnacceptedMemory()

VOID EFIAPI ResolveUnacceptedMemory	(	IN EFI_EVENT	Event,
		IN VOID *	Context
	)

Definition at line 160 of file AmdSevDxe.c.

Variable Documentation

◆ mAcceptAllMemoryAtEBS

STATIC BOOLEAN mAcceptAllMemoryAtEBS = TRUE

Definition at line 66 of file AmdSevDxe.c.

◆ mAcceptAllMemoryEvent

STATIC EFI_EVENT mAcceptAllMemoryEvent = NULL

Definition at line 68 of file AmdSevDxe.c.

◆ mAmdSevDxeHandle

STATIC EFI_HANDLE mAmdSevDxeHandle = NULL

Definition at line 64 of file AmdSevDxe.c.

◆ mMemoryAcceptanceProtocol

STATIC OVMF_SEV_MEMORY_ACCEPTANCE_PROTOCOL mMemoryAcceptanceProtocol = { AllowUnacceptedMemory }

Definition at line 188 of file AmdSevDxe.c.

◆ mMemoryAcceptProtocol

STATIC EDKII_MEMORY_ACCEPT_PROTOCOL mMemoryAcceptProtocol

Initial value:

= {
  AmdSevMemoryAccept
}

Definition at line 190 of file AmdSevDxe.c.

Macros

Functions

Variables