Microcode.c File Reference

#include "MpLib.h"

Go to the source code of this file.

Functions
VOID	MicrocodeDetect (IN CPU_MP_DATA *CpuMpData, IN UINTN ProcessorNumber)
VOID	ShadowMicrocodePatchWorker (IN OUT CPU_MP_DATA *CpuMpData, IN MICROCODE_PATCH_INFO *Patches, IN UINTN PatchCount, IN UINTN TotalLoadSize)
VOID	ShadowMicrocodePatchByPcd (IN OUT CPU_MP_DATA *CpuMpData)
VOID	ShadowMicrocodeUpdatePatch (IN OUT CPU_MP_DATA *CpuMpData)
BOOLEAN	GetMicrocodePatchInfoFromHob (UINT64 *Address, UINT64 *RegionSize)

Detailed Description

Implementation of loading microcode on processors.

Copyright (c) 2015 - 2021, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file Microcode.c.

Function Documentation

GetMicrocodePatchInfoFromHob()

BOOLEAN GetMicrocodePatchInfoFromHob	(	UINT64 *	Address,
		UINT64 *	RegionSize
	)

Get the cached microcode patch base address and size from the microcode patch information cache HOB.

Parameters

[out]	Address	Base address of the microcode patches data. It will be updated if the microcode patch information cache HOB is found.
[out]	RegionSize	Size of the microcode patches data. It will be updated if the microcode patch information cache HOB is found.

Return values

TRUE	The microcode patch information cache HOB is found.
FALSE	The microcode patch information cache HOB is not found.

Definition at line 358 of file Microcode.c.

MicrocodeDetect()

VOID MicrocodeDetect	(	IN CPU_MP_DATA *	CpuMpData,
		IN UINTN	ProcessorNumber
	)

Detect whether specified processor can find matching microcode patch and load it.

Parameters

[in]	CpuMpData	The pointer to CPU MP Data structure.
[in]	ProcessorNumber	The handle number of the processor. The range is from 0 to the total number of logical processors minus 1.

Definition at line 20 of file Microcode.c.

ShadowMicrocodePatchByPcd()

VOID ShadowMicrocodePatchByPcd

(

IN OUT CPU_MP_DATA *

CpuMpData

)

Shadow the required microcode patches data into memory according to PCD PcdCpuMicrocodePatchAddress and PcdCpuMicrocodePatchRegionSize.

Parameters

[in,out]

CpuMpData

The pointer to CPU MP Data structure.

Definition at line 188 of file Microcode.c.

ShadowMicrocodePatchWorker()

VOID ShadowMicrocodePatchWorker	(	IN OUT CPU_MP_DATA *	CpuMpData,
		IN MICROCODE_PATCH_INFO *	Patches,
		IN UINTN	PatchCount,
		IN UINTN	TotalLoadSize
	)

Actual worker function that shadows the required microcode patches into memory.

Parameters

[in,out]	CpuMpData	The pointer to CPU MP Data structure.
[in]	Patches	The pointer to an array of information on the microcode patches that will be loaded into memory.
[in]	PatchCount	The number of microcode patches that will be loaded into memory.
[in]	TotalLoadSize	The total size of all the microcode patches to be loaded.

Definition at line 134 of file Microcode.c.

ShadowMicrocodeUpdatePatch()

VOID ShadowMicrocodeUpdatePatch

(

IN OUT CPU_MP_DATA *

CpuMpData

)

Shadow the required microcode patches data into memory.

Parameters

[in,out]

CpuMpData

The pointer to CPU MP Data structure.

Definition at line 330 of file Microcode.c.