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/**
* @file
*
* Southbridge EC IO access common routine
*
*/
/*
*****************************************************************************
*
* This file is part of the coreboot project.
*
* Copyright (C) 2010 Advanced Micro Devices, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
* ***************************************************************************
*
*/
#include "SBPLATFORM.h"
// #ifndef NO_EC_SUPPORT
/*----------------------------------------------------------------------------------------*/
/**
* EnterEcConfig - Force EC into Config mode
*
*
*
*
*/
VOID
EnterEcConfig (
)
{
UINT16 dwEcIndexPort;
ReadPCI ((LPC_BUS_DEV_FUN << 16) + SB_LPC_REGA4, AccWidthUint16 | S3_SAVE, &dwEcIndexPort);
dwEcIndexPort &= ~(BIT0);
RWIO (dwEcIndexPort, AccWidthUint8, 0x00, 0x5A);
}
/*----------------------------------------------------------------------------------------*/
/**
* ExitEcConfig - Force EC exit Config mode
*
*
*
*
*/
VOID
ExitEcConfig (
)
{
UINT16 dwEcIndexPort;
ReadPCI ((LPC_BUS_DEV_FUN << 16) + SB_LPC_REGA4, AccWidthUint16 | S3_SAVE, &dwEcIndexPort);
dwEcIndexPort &= ~(BIT0);
RWIO (dwEcIndexPort, AccWidthUint8, 0x00, 0xA5);
}
/*----------------------------------------------------------------------------------------*/
/**
* ReadEC8 - Read EC register data
*
*
*
* @param[in] Address - EC Register Offset Value
* @param[in] Value - Read Data Buffer
*
*/
VOID
ReadEC8 (
IN UINT8 Address,
IN UINT8* Value
)
{
UINT16 dwEcIndexPort;
ReadPCI ((LPC_BUS_DEV_FUN << 16) + SB_LPC_REGA4, AccWidthUint16 | S3_SAVE, &dwEcIndexPort);
dwEcIndexPort &= ~(BIT0);
WriteIO (dwEcIndexPort, AccWidthUint8, &Address);
ReadIO (dwEcIndexPort + 1, AccWidthUint8, Value);
}
/*----------------------------------------------------------------------------------------*/
/**
* WriteEC8 - Write date into EC register
*
*
*
* @param[in] Address - EC Register Offset Value
* @param[in] Value - Write Data Buffer
*
*/
VOID
WriteEC8 (
IN UINT8 Address,
IN UINT8* Value
)
{
UINT16 dwEcIndexPort;
ReadPCI ((LPC_BUS_DEV_FUN << 16) + SB_LPC_REGA4, AccWidthUint16 | S3_SAVE, &dwEcIndexPort);
dwEcIndexPort &= ~(BIT0);
WriteIO (dwEcIndexPort, AccWidthUint8, &Address);
WriteIO (dwEcIndexPort + 1, AccWidthUint8, Value);
}
/*----------------------------------------------------------------------------------------*/
/**
* RWEC8 - Read/Write EC register
*
*
*
* @param[in] Address - EC Register Offset Value
* @param[in] AndMask - Data And Mask 8 bits
* @param[in] OrMask - Data OR Mask 8 bits
*
*/
VOID
RWEC8 (
IN UINT8 Address,
IN UINT8 AndMask,
IN UINT8 OrMask
)
{
UINT8 Result;
ReadEC8 (Address, &Result);
Result = (Result & AndMask) | OrMask;
WriteEC8 (Address, &Result);
}
// #endif
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