diff options
Diffstat (limited to 'src/vendorcode/amd/cimx/sb800/ACPILIB.c')
| -rw-r--r-- | src/vendorcode/amd/cimx/sb800/ACPILIB.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/src/vendorcode/amd/cimx/sb800/ACPILIB.c b/src/vendorcode/amd/cimx/sb800/ACPILIB.c new file mode 100644 index 0000000000..d8d8a66d8c --- /dev/null +++ b/src/vendorcode/amd/cimx/sb800/ACPILIB.c @@ -0,0 +1,166 @@ +/* + ***************************************************************************** + * + * 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 UINT32 Signature + ) +{ + UINT32 i; + UINT32* RsdPtr; + UINT32* Rsdt; + UINTN tableOffset; + DESCRIPTION_HEADER* CurrentTable; + + RsdPtr = (UINT32*) (UINTN)0xe0000; + Rsdt = NULL; + do { + if ( *RsdPtr == Int32FromChar('R', 'S', 'D', ' ') && *(RsdPtr + 1) == Int32FromChar('P', 'T', 'R', ' ')) { + 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); +} + |