diff options
Diffstat (limited to 'src/vendorcode/amd/cimx/rd890/amdAcpiMadt.c')
| -rw-r--r-- | src/vendorcode/amd/cimx/rd890/amdAcpiMadt.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/src/vendorcode/amd/cimx/rd890/amdAcpiMadt.c b/src/vendorcode/amd/cimx/rd890/amdAcpiMadt.c new file mode 100644 index 0000000000..daf2c1feb3 --- /dev/null +++ b/src/vendorcode/amd/cimx/rd890/amdAcpiMadt.c @@ -0,0 +1,148 @@ +/** + * @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" +#include "amdAcpiMadt.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 first block entry in an IVRS (IOMMU) table + * + * + * + * @param[in] StructureType Type of structure entry to find (APIC = 1, 0xFF = next structure) + * @param[in] MadtPtr Pointer to MADT ACPI table + * + */ + +VOID* +LibAmdGetFirstMadtStructure ( + IN UINT8 StructureType, + IN VOID *MadtPtr + ) +{ + // Start at MADT pointer + 48 (48 is always the size of IVRS header) + UINT8* BlockPtr; + + // If our pointer is not to an IVRS, return error +// if (((DESCRIPTION_HEADER*)MadtPtr)->Signature != 'CIPA') { + if (((DESCRIPTION_HEADER*)MadtPtr)->Signature != Int32FromChar ('C', 'I', 'P', 'A')) { + return NULL; + } + BlockPtr = (UINT8*)MadtPtr + 44; + + // Search each entry incrementing by it's size field in offset 2 until + // we reach the end of the IVRS + do { + if (*BlockPtr == StructureType) { + return BlockPtr; + } + BlockPtr += *(BlockPtr + 1); + } while (BlockPtr < (UINT8*)MadtPtr + ((DESCRIPTION_HEADER*)MadtPtr)->Length); + return NULL; +} + +/*----------------------------------------------------------------------------------------*/ +/** + * Get next block entry in an IVRS (IOMMU) table + * + * + * + * @param[in] StructureType Type of structure entry to find (APIC = 1, ..., 0xFF = next structure) + * @param[in] CurrentStructurePtr Pointer to current structure in IVRS + * @param[in] MadtPtr Pointer to MADT ACPI table + * + */ + +VOID* +LibAmdGetNextMadtStructure ( + IN UINT8 StructureType, + IN VOID *CurrentStructurePtr, + IN VOID *MadtPtr + ) +{ + UINT8 *BlockPtr; + BlockPtr = (UINT8*)CurrentStructurePtr + (*(UINT8*) ((UINT8*)CurrentStructurePtr + 1)); + + // If our pointer is not to an IVRS, return error +// if (((DESCRIPTION_HEADER*)MadtPtr)->Signature != 'CIPA') { + if (((DESCRIPTION_HEADER*)MadtPtr)->Signature != Int32FromChar ('C', 'I', 'P', 'A')) { + return NULL; + } + + // Search each entry incrementing by it's size field in offset 2 until + // we reach the end of the IVRS + while (BlockPtr < ((UINT8*)MadtPtr + ((DESCRIPTION_HEADER*)MadtPtr)->Length)) { + if (*BlockPtr == StructureType) { + return BlockPtr; + } + BlockPtr += *(BlockPtr + 1); + } + return NULL; +} |