| /*;******************************************************************************** |
| ; |
| ; 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_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); |
| } |
| |
| 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); |
| } |
| |