| /* |
| ***************************************************************************** |
| * |
| * 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_HEADER*)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); |
| } |
| |