diff options
Diffstat (limited to 'src/vendorcode/amd/cimx/rd890/amdAcpiLib.c')
| -rw-r--r-- | src/vendorcode/amd/cimx/rd890/amdAcpiLib.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/src/vendorcode/amd/cimx/rd890/amdAcpiLib.c b/src/vendorcode/amd/cimx/rd890/amdAcpiLib.c new file mode 100644 index 0000000000..60b5ffe71b --- /dev/null +++ b/src/vendorcode/amd/cimx/rd890/amdAcpiLib.c @@ -0,0 +1,186 @@ +/** + * @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; +} |