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/**
* @file
*
* Southbridge IO access common routine
*
*
*
* @xrefitem bom "File Content Label" "Release Content"
* @e project: CIMx-SB
* @e sub-project:
* @e \$Revision:$ @e \$Date:$
*
*/
/*
*****************************************************************************
*
* 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"
/*----------------------------------------------------------------------------------------*/
/**
* SbStall - Delay routine
*
*
*
* @param[in] uSec
*
*/
VOID
SbStall (
IN UINT32 uSec
)
{
UINT16 timerAddr;
UINT32 startTime;
UINT32 elapsedTime;
ReadMEM (ACPI_MMIO_BASE + PMIO_BASE + SB_PMIOA_REG64, AccWidthUint16, &timerAddr);
if ( timerAddr == 0 ) {
uSec = uSec / 2;
while ( uSec != 0 ) {
ReadIO (0x80, AccWidthUint8, (UINT8 *) (&startTime));
uSec--;
}
} else {
ReadIO (timerAddr, AccWidthUint32, &startTime);
for ( ;; ) {
ReadIO (timerAddr, AccWidthUint32, &elapsedTime);
if ( elapsedTime < startTime ) {
elapsedTime = elapsedTime + 0xFFFFFFFF - startTime;
} else {
elapsedTime = elapsedTime - startTime;
}
if ( (elapsedTime * 28 / 100) > uSec ) {
break;
}
}
}
}
/*----------------------------------------------------------------------------------------*/
/**
* SbReset - Generate a reset command
*
*
*
* @param[in] OpFlag - Dummy
*
*/
VOID
SbReset (
IN UINT8 OpFlag
)
{
UINT8 Temp;
Temp = OpFlag;
RWIO (0xcf9, AccWidthUint8, 0x0, 0x06);
}
/*----------------------------------------------------------------------------------------*/
/**
* outPort80 - Send data to PORT 80 (debug port)
*
*
*
* @param[in] pcode - debug code (32 bits)
*
*/
VOID
outPort80 (
IN UINT32 pcode
)
{
WriteIO (0x80, AccWidthUint8, &pcode);
return;
}
/**
* AmdSbCopyMem - Memory copy
*
* @param[in] pDest - Destance address point
* @param[in] pSource - Source Address point
* @param[in] Length - Data length
*
*/
VOID
AmdSbCopyMem (
IN VOID* pDest,
IN VOID* pSource,
IN UINTN Length
)
{
UINTN i;
UINT8 *Ptr;
UINT8 *Source;
Ptr = (UINT8*)pDest;
Source = (UINT8*)pSource;
for (i = 0; i < Length; i++) {
*Ptr = *Source;
Source++;
Ptr++;
}
}
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