TdxAcpiTable.h File Reference

#include <PiDxe.h>
#include <Protocol/AcpiTable.h>
#include <Protocol/FirmwareVolume2.h>
#include <Protocol/PciIo.h>
#include <Library/BaseLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/DebugLib.h>
#include <Library/PcdLib.h>
#include <IndustryStandard/IntelTdx.h>
#include <IndustryStandard/Acpi.h>

Go to the source code of this file.

Functions
VOID EFIAPI	AsmGetRelocationMap (OUT MP_RELOCATION_MAP *AddressMap)
EFI_PHYSICAL_ADDRESS EFIAPI	RelocateMailbox (VOID)
VOID EFIAPI	AlterAcpiTable (IN EFI_EVENT Event, IN VOID *Context)

Detailed Description

Copyright (c) 2008 - 2012, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file TdxAcpiTable.h.

Function Documentation

AlterAcpiTable()

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

Alter the MADT when ACPI Table from QEMU is available.

Parameters

[in]	Event	Event whose notification function is being invoked
[in]	Context	Pointer to the notification function's context

Definition at line 129 of file TdxAcpiTable.c.

RelocateMailbox()

EFI_PHYSICAL_ADDRESS EFIAPI RelocateMailbox

(

VOID

)

At the beginning of system boot, a 4K-aligned, 4K-size memory (Td mailbox) is pre-allocated by host VMM. BSP & APs do the page accept together in that memory region.

After that TDVF is designed to relocate the mailbox to a 4K-aligned, 4K-size memory block which is allocated in the ACPI Nvs memory. APs are waken up and spin around the relocated mailbox for further command.

Returns

EFI_PHYSICAL_ADDRESS Address of the relocated mailbox

Definition at line 44 of file TdxAcpiTable.c.