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/*;********************************************************************************
;
; Copyright (c) 2011, Advanced Micro Devices, Inc.
; All rights reserved.
;
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions are met:
; * Redistributions of source code must retain the above copyright
; notice, this list of conditions and the following disclaimer.
; * Redistributions in binary form must reproduce the above copyright
; notice, this list of conditions and the following disclaimer in the
; documentation and/or other materials provided with the distribution.
; * Neither the name of Advanced Micro Devices, Inc. nor the names of
; its contributors may be used to endorse or promote products derived
; from this software without specific prior written permission.
;
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
; DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY
; DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
; (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;
;*********************************************************************************/
#include "SbPlatform.h"
#include "cbtypes.h"
//
//
// Routine Description:
//
// Locate ACPI table
//
// Arguments:
//
// Signature - table signature
//
//Returns:
//
// pointer to ACPI table
//
//
VOID*
ACPI_LocateTable (
IN unsigned int Signature
)
{
UINT32 i;
UINT32* RsdPtr;
UINT32* Rsdt;
UINTN tableOffset;
DESCRIPTION_HEADER* CurrentTable;
RsdPtr = (UINT32*) (UINTN)0xe0000;
Rsdt = NULL;
do {
// if ( *RsdPtr == ' DSR' && *(RsdPtr + 1) == ' RTP' ) {
// if ( (*RsdPtr == 0x52534420) && (*(RsdPtr + 1) == 0x50545220) ) {
if ( (*RsdPtr == 0x20445352) && (*(RsdPtr + 1) == 0x20525450) ) {
Rsdt = (UINT32*) (UINTN) ((RSDP*)RsdPtr)->RsdtAddress;
break;
}
RsdPtr += 4;
} while ( RsdPtr <= (UINT32*) (UINTN)0xffff0 );
if ( Rsdt != NULL && ACPI_GetTableChecksum (Rsdt) == 0 ) {
for ( i = 0; i < (((DESCRIPTION_HEADER*)Rsdt)->Length - sizeof (DESCRIPTION_HEADER)) / 4; i++ ) {
tableOffset = *(UINTN*) ((UINT8*)Rsdt + sizeof (DESCRIPTION_HEADER) + i * 4);
CurrentTable = (DESCRIPTION_HEADER*)tableOffset;
if ( CurrentTable->Signature == Signature ) {
return CurrentTable;
}
}
}
return NULL;
}
//
//
// Routine Description:
//
// Update table checksum
//
// Arguments:
//
// TablePtr - table pointer
//
// Returns:
//
// none
//
//
VOID
ACPI_SetTableChecksum (
IN VOID* TablePtr
)
{
UINT8 Checksum;
Checksum = 0;
((DESCRIPTION_HEADER*)TablePtr)->Checksum = 0;
Checksum = ACPI_GetTableChecksum (TablePtr);
((DESCRIPTION_HEADER*)TablePtr)->Checksum = (UINT8) (0x100 - Checksum);
}
//
//
// Routine Description:
//
// Get table checksum
//
// Arguments:
//
// TablePtr - table pointer
//
// Returns:
//
// none
//
//
UINT8
ACPI_GetTableChecksum (
IN VOID* TablePtr
)
{
return GetByteSum (TablePtr, ((DESCRIPTION_HEADER*)TablePtr)->Length);
}
UINT8
GetByteSum (
IN VOID* pData,
IN UINT32 Length
)
{
UINT32 i;
UINT8 Checksum;
Checksum = 0;
for ( i = 0; i < Length; i++ ) {
Checksum = Checksum + (*((UINT8*)pData + i));
}
return Checksum;
}
VOID
GetSbAcpiMmioBase (
OUT UINT32* AcpiMmioBase
)
{
UINT32 Value16;
ReadPMIO (SB_PMIOA_REG24 + 2, AccWidthUint16, &Value16);
*AcpiMmioBase = Value16 << 16;
}
VOID
GetSbAcpiPmBase (
OUT UINT16* AcpiPmBase
)
{
ReadPMIO (SB_PMIOA_REG60, AccWidthUint16, AcpiPmBase);
}
VOID
SetAcpiPma (
IN UINT8 pmaControl
)
{
UINT16 pmaBase;
UINT16 dwValue;
ReadMEM (ACPI_MMIO_BASE + PMIO_BASE + SB_PMIOA_REG74, AccWidthUint16, &dwValue);
dwValue &= ~BIT6;
WriteMEM (ACPI_MMIO_BASE + PMIO_BASE + SB_PMIOA_REG74, AccWidthUint16, &dwValue);
ReadMEM (ACPI_MMIO_BASE + PMIO_BASE + SB_PMIOA_REG6E, AccWidthUint16, &pmaBase);
WriteIo8 (pmaBase, pmaControl);
RWMEM (ACPI_MMIO_BASE + SMI_BASE + SB_PMIOA_REG98 + 3, AccWidthUint8, ~BIT7, pmaControl << 7);
}
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