SdMmcPciHcPei.c File Reference

#include "SdMmcPciHcPei.h"

Go to the source code of this file.

Functions
EFI_STATUS EFIAPI	GetSdMmcHcMmioBar (IN EDKII_SD_MMC_HOST_CONTROLLER_PPI *This, IN UINT8 ControllerId, IN OUT UINTN **MmioBar, OUT UINT8 *BarNum)
EFI_STATUS EFIAPI	InitializeSdMmcHcPeim (IN EFI_PEI_FILE_HANDLE FileHandle, IN CONST EFI_PEI_SERVICES **PeiServices)

Variables
EDKII_SD_MMC_HOST_CONTROLLER_PPI	mSdMmcHostControllerPpi = { GetSdMmcHcMmioBar }
EFI_PEI_PPI_DESCRIPTOR	mPpiList

Detailed Description

SdMmcPciHcPei driver is used to provide platform-dependent info, mainly SD/MMC host controller MMIO base, to upper layer SD/MMC drivers.

Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file SdMmcPciHcPei.c.

Function Documentation

GetSdMmcHcMmioBar()

EFI_STATUS EFIAPI GetSdMmcHcMmioBar	(	IN EDKII_SD_MMC_HOST_CONTROLLER_PPI *	This,
		IN UINT8	ControllerId,
		IN OUT UINTN **	MmioBar,
		OUT UINT8 *	BarNum
	)

Get the MMIO base address of SD/MMC host controller.

Parameters

[in]	This	The protocol instance pointer.
[in]	ControllerId	The ID of the SD/MMC host controller.
[in,out]	MmioBar	The pointer to store the array of available SD/MMC host controller slot MMIO base addresses. The entry number of the array is specified by BarNum.
[out]	BarNum	The pointer to store the supported bar number.

Return values

EFI_SUCCESS	The operation succeeds.
EFI_INVALID_PARAMETER	The parameters are invalid.

Definition at line 36 of file SdMmcPciHcPei.c.

InitializeSdMmcHcPeim()

EFI_STATUS EFIAPI InitializeSdMmcHcPeim	(	IN EFI_PEI_FILE_HANDLE	FileHandle,
		IN CONST EFI_PEI_SERVICES **	PeiServices
	)

The user code starts with this function.

Parameters

FileHandle	Handle of the file being invoked.
PeiServices	Describes the list of possible PEI Services.

Return values

EFI_SUCCESS	The driver is successfully initialized.
Others	Can't initialize the driver.

We do not expose this in S3 boot path, because it is only for recovery.

Install SdMmc Host Controller PPI

Definition at line 72 of file SdMmcPciHcPei.c.

Variable Documentation

mPpiList

EFI_PEI_PPI_DESCRIPTOR mPpiList

Initial value:

= {
  (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
  &gEdkiiPeiSdMmcHostControllerPpiGuid,
  &mSdMmcHostControllerPpi
}

Definition at line 14 of file SdMmcPciHcPei.c.

mSdMmcHostControllerPpi

EDKII_SD_MMC_HOST_CONTROLLER_PPI mSdMmcHostControllerPpi = { GetSdMmcHcMmioBar }

Definition at line 12 of file SdMmcPciHcPei.c.