| /** |
| * @file |
| * |
| * ACPI common library |
| * |
| * |
| * |
| * @xrefitem bom "File Content Label" "Release Content" |
| * @e project: Common Library |
| * @e sub-project: |
| * @e \$Revision:$ @e \$Date:$ |
| * |
| */ |
| /***************************************************************************** |
| * |
| * Copyright (C) 2012 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. |
| * |
| * |
| ***************************************************************************/ |
| /*---------------------------------------------------------------------------------------- |
| * M O D U L E S U S E D |
| *---------------------------------------------------------------------------------------- |
| */ |
| #include "AGESA.h" |
| #include "amdAcpiLib.h" |
| |
| /*---------------------------------------------------------------------------------------- |
| * D E F I N I T I O N S A N D M A C R O S |
| *---------------------------------------------------------------------------------------- |
| */ |
| |
| /*---------------------------------------------------------------------------------------- |
| * T Y P E D E F S A N D S T R U C T U R E S |
| *---------------------------------------------------------------------------------------- |
| */ |
| |
| |
| /*---------------------------------------------------------------------------------------- |
| * P R O T O T Y P E S O F L O C A L F U N C T I O N S |
| *---------------------------------------------------------------------------------------- |
| */ |
| |
| |
| /*---------------------------------------------------------------------------------------- |
| * E X P O R T E D F U N C T I O N S |
| *---------------------------------------------------------------------------------------- |
| */ |
| |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Get ACPI table. |
| * |
| * |
| * |
| * @param[in] Signature ACPI table signature |
| * |
| */ |
| |
| AGESA_STATUS |
| LibAmdGetAcpiTable ( |
| IN UINT32 Signature, |
| IN VOID **TablePtr, |
| IN UINTN *TableHandle |
| ) |
| { |
| UINT32 i; |
| UINT32* RsdPtr; |
| UINT32* Rsdt; |
| DESCRIPTION_HEADER* CurrentTable; |
| |
| RsdPtr = (UINT32*) (UINTN)0xe0000; |
| Rsdt = NULL; |
| |
| do { |
| // if (*RsdPtr == ' DSR' && *(RsdPtr + 1) == ' RTP') { |
| if ((*RsdPtr == Int32FromChar (' ', 'D', 'S', 'R')) && (*(RsdPtr+1) == Int32FromChar (' ', 'R', 'T', 'P'))) { |
| Rsdt = (UINT32*) (UINTN) (((RSDP*)RsdPtr)->RsdtAddress); |
| break; |
| } |
| RsdPtr += 4; |
| } while (RsdPtr <= (UINT32*) ((UINTN)0xffff0)); |
| if (Rsdt != NULL && LibAmdGetAcpiTableChecksum (Rsdt) == 0) { |
| for (i = 0; i < (((DESCRIPTION_HEADER*)Rsdt)->Length - sizeof (DESCRIPTION_HEADER)) / 4; i++) { |
| CurrentTable = (DESCRIPTION_HEADER*) (UINTN)*(UINT32*) ((UINT8*)Rsdt + sizeof (DESCRIPTION_HEADER) + i*4); |
| if (CurrentTable->Signature == Signature) { |
| *TablePtr = CurrentTable; |
| return AGESA_SUCCESS; |
| } |
| } |
| } |
| return AGESA_UNSUPPORTED; |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Set ACPI table. |
| * |
| * |
| * |
| * @param[in] Signature ACPI table signature |
| * |
| */ |
| |
| AGESA_STATUS |
| LibAmdSetAcpiTable ( |
| IN VOID *TablePtr, |
| IN BOOLEAN Checksum, |
| IN UINTN *TableHandle |
| ) |
| { |
| if (Checksum) { |
| LibAmdUpdateAcpiTableChecksum (TablePtr); |
| } |
| return AGESA_SUCCESS; |
| } |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Get ACPI table checksum |
| * |
| * |
| * |
| * @param[in] Pointer to ACPI table |
| * |
| */ |
| |
| UINT8 |
| LibAmdGetAcpiTableChecksum ( |
| IN VOID *TablePtr |
| ) |
| { |
| UINT32 i; |
| UINT8 Checksum; |
| |
| Checksum = 0; |
| |
| for (i = 0; i < ((DESCRIPTION_HEADER*)TablePtr)->Length; i++) { |
| Checksum = Checksum + *(UINT8*) ((UINT8*)TablePtr + i); |
| } |
| return Checksum; |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Update ACPI table checksum |
| * |
| * |
| * |
| * @param[in] Pointer to ACPI table |
| * |
| */ |
| |
| VOID |
| LibAmdUpdateAcpiTableChecksum ( |
| IN VOID *TablePtr |
| ) |
| { |
| UINT8 Checksum; |
| Checksum = 0; |
| ((DESCRIPTION_HEADER*)TablePtr)->Checksum = 0; |
| Checksum = LibAmdGetAcpiTableChecksum (TablePtr); |
| ((DESCRIPTION_HEADER*)TablePtr)->Checksum = 0x100 - Checksum; |
| } |