/** @file
Onboard processor information boot time changes for SMBIOS type 4.
Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "CommonHeader.h"
#include "MiscSubclassDriver.h"
#include
#include
#include
#define EfiProcessorFamilyIntelAtomProcessor 0x2B
EFI_GUID mProcessorProducerGuid;
/**
Get cache SMBIOS record handle.
@param[in] Smbios Pointer to SMBIOS protocol instance.
@param[in] CacheLevel Level of cache, starting from one.
@param[out] Handle Returned record handle.
**/
VOID
GetCacheHandle (
IN EFI_SMBIOS_PROTOCOL *Smbios,
IN UINT8 CacheLevel,
OUT EFI_SMBIOS_HANDLE *Handle
)
{
UINT16 CacheConfig;
EFI_STATUS Status;
EFI_SMBIOS_TYPE RecordType;
EFI_SMBIOS_TABLE_HEADER *Buffer;
*Handle = 0;
RecordType = EFI_SMBIOS_TYPE_CACHE_INFORMATION;
do {
Status = Smbios->GetNext (
Smbios,
Handle,
&RecordType,
&Buffer,
NULL
);
if (!EFI_ERROR (Status)) {
CacheConfig = *(UINT16*)((UINT8*)Buffer + 5);
if ((CacheConfig & 0x7) == (CacheLevel -1)) {
return;
}
}
} while (!EFI_ERROR(Status));
*Handle = 0xFFFF;
}
/**
This function makes boot time changes to the contents of the
MiscProcessorInformation (Type 4).
@param[in] RecordData Pointer to copy of RecordData from the Data Table.
@retval EFI_SUCCESS All parameters were valid.
@retval EFI_UNSUPPORTED Unexpected RecordType value.
@retval EFI_INVALID_PARAMETER Invalid parameter was found.
**/
UINT32
ConvertBase10ToRaw (
IN EFI_EXP_BASE10_DATA *Data)
{
UINTN Index;
UINT32 RawData;
RawData = Data->Value;
for (Index = 0; Index < (UINTN) Data->Exponent; Index++) {
RawData *= 10;
}
return RawData;
}
#define BSEL_CR_OVERCLOCK_CONTROL 0xCD
#define FUSE_BSEL_MASK 0x03
UINT16 miFSBFrequencyTable[4] = {
83, // 83.3MHz
100, // 100MHz
133, // 133MHz
117 // 116.7MHz
};
/**
Determine the processor core frequency
@param None
@retval Processor core frequency multiplied by 3
**/
UINT16
DetermineiFsbFromMsr (
VOID
)
{
//
// Determine the processor core frequency
//
UINT64 Temp;
Temp = (EfiReadMsr (BSEL_CR_OVERCLOCK_CONTROL)) & FUSE_BSEL_MASK;
return miFSBFrequencyTable[(UINT32)(Temp)];
}
MISC_SMBIOS_TABLE_FUNCTION (MiscProcessorInformation)
{
return EFI_SUCCESS;
}