/** @file
|
Scs policy
|
|
Copyright (c) 2019 Intel Corporation. All rights reserved. <BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
**/
|
|
#ifndef _SCS_CONFIG_H_
|
#define _SCS_CONFIG_H_
|
|
#include <ConfigBlock.h>
|
|
#define SCS_CONFIG_REVISION 2
|
extern EFI_GUID gScsConfigGuid;
|
|
#pragma pack (push,1)
|
|
typedef enum {
|
DriverStrength33Ohm = 0,
|
DriverStrength40Ohm,
|
DriverStrength50Ohm
|
} PCH_SCS_EMMC_DRIVER_STRENGTH;
|
|
/**
|
The PCH_SCS_CONFIG block describes Storage and Communication Subsystem (SCS) settings for PCH.
|
|
<b>Revision 1</b>:
|
- Initial version
|
<b>Revision 2</b>:
|
- Add policy SdCardPowerEnableActiveHigh
|
**/
|
typedef struct {
|
CONFIG_BLOCK_HEADER Header; ///< Config Block Header
|
|
UINT32 ScsEmmcEnabled : 2; ///< Determine if eMMC is enabled - 0: Disabled, <b>1: Enabled</b>.
|
UINT32 ScsEmmcHs400Enabled : 1; ///< Determine eMMC HS400 Mode if ScsEmmcEnabled - <b>0: Disabled</b>, 1: Enabled
|
/**
|
Determine if HS400 Training is required, set to FALSE if Hs400 Data is valid. <b>0: Disabled</b>, 1: Enabled.
|
First Boot or CMOS clear, system boot with Default settings, set tuning required.
|
Subsequent Boots, Get Variable 'Hs400TuningData'
|
- if failed to get variable, set tuning required
|
- if passed, retrieve Hs400DataValid, Hs400RxStrobe1Dll and Hs400TxDataDll from variable. Set tuning not required.
|
**/
|
UINT32 ScsEmmcHs400TuningRequired : 1;
|
UINT32 ScsEmmcHs400DllDataValid : 1; ///< Set if HS400 Tuning Data Valid
|
UINT32 ScsEmmcHs400RxStrobeDll1 : 7; ///< Rx Strobe Delay Control - Rx Strobe Delay DLL 1 (HS400 Mode)
|
UINT32 ScsEmmcHs400TxDataDll : 7; ///< Tx Data Delay Control 1 - Tx Data Delay (HS400 Mode)
|
UINT32 ScsEmmcHs400DriverStrength : 3; ///< I/O driver strength: 0 - 33 Ohm, <b>1 - 40 Ohm</b>, 2 - 50 Ohm
|
/**
|
Sd Card Controler 0: Disable; <b>1: Enable</b>.
|
For Desktop sku, the SD Card Controller POR should be disabled. <b> 0:Disable </b>.
|
**/
|
UINT32 ScsSdcardEnabled : 1;
|
UINT32 ScsUfsEnabled : 1; ///< Determine if Ufs is enabled 0: Disabled 1: Enabled
|
UINT32 SdCardPowerEnableActiveHigh : 1; ///< Determine SD_PWREN# polarity 0: Active low, <b>1: Active high</b>
|
UINT32 RsvdBits : 7;
|
UINT32 Rsvd0; ///< Reserved bytes
|
} PCH_SCS_CONFIG;
|
|
#pragma pack (pop)
|
|
#endif // _SCS_CONFIG_H_
|
