tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

UefiCpuPkg/MtrrLib: Add worker functions to access MTRRs or variable 

Add worker functions that could access MTRRs or MTRR settings in input buffer.

Cc: Feng Tian <feng.tian@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19160 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Michael Kinney 2015-12-08 05:25:21 +00:00 committed by vanjeff
parent e518b80d80
commit 5abd5ed4c4
1 changed files with 83 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

106
UefiCpuPkg/Library/MtrrLib/MtrrLib.c
View File

@ -183,15 +183,25 @@ GetFirmwareVariableMtrrCount (
/**
Worker function returns the default MTRR cache type for the system.
If MtrrSetting is not NULL, returns the default MTRR cache type from input
MTRR settings buffer.
If MtrrSetting is NULL, returns the default MTRR cache type from MSR.
@param[in] MtrrSetting A buffer holding all MTRRs content.
@return The default MTRR cache type.
**/
MTRR_MEMORY_CACHE_TYPE
MtrrGetDefaultMemoryTypeWorker (
VOID
IN MTRR_SETTINGS *MtrrSetting
)
{
return (MTRR_MEMORY_CACHE_TYPE) (AsmReadMsr64 (MTRR_LIB_IA32_MTRR_DEF_TYPE) & 0x7);
if (MtrrSetting == NULL) {
return (MTRR_MEMORY_CACHE_TYPE) (AsmReadMsr64 (MTRR_LIB_IA32_MTRR_DEF_TYPE) & 0x7);
} else {
return (MTRR_MEMORY_CACHE_TYPE) (MtrrSetting->MtrrDefType & 0x7);
}
}
@ -210,7 +220,7 @@ MtrrGetDefaultMemoryType (
if (!IsMtrrSupported ()) {
return CacheUncacheable;
}
return MtrrGetDefaultMemoryTypeWorker ();
return MtrrGetDefaultMemoryTypeWorker (NULL);
}
/**
@ -360,6 +370,12 @@ MtrrGetFixedMtrr (
/**
Worker function will get the raw value in variable MTRRs
If MtrrSetting is not NULL, gets the variable MTRRs raw value from input
MTRR settings buffer.
If MtrrSetting is NULL, gets the variable MTRRs raw value from MTRRs.
@param[in] MtrrSetting A buffer holding all MTRRs content.
@param[in] VariableMtrrCount Number of variable MTRRs.
@param[out] VariableSettings A buffer to hold variable MTRRs content.
@return The VariableSettings input pointer
@ -367,6 +383,7 @@ MtrrGetFixedMtrr (
**/
MTRR_VARIABLE_SETTINGS*
MtrrGetVariableMtrrWorker (
IN MTRR_SETTINGS *MtrrSetting,
IN UINT32 VariableMtrrCount,
OUT MTRR_VARIABLE_SETTINGS *VariableSettings
)
@ -376,10 +393,15 @@ MtrrGetVariableMtrrWorker (
ASSERT (VariableMtrrCount <= MTRR_NUMBER_OF_VARIABLE_MTRR);
for (Index = 0; Index < VariableMtrrCount; Index++) {
VariableSettings->Mtrr[Index].Base =
AsmReadMsr64 (MTRR_LIB_IA32_VARIABLE_MTRR_BASE + (Index << 1));
VariableSettings->Mtrr[Index].Mask =
AsmReadMsr64 (MTRR_LIB_IA32_VARIABLE_MTRR_BASE + (Index << 1) + 1);
if (MtrrSetting == NULL) {
VariableSettings->Mtrr[Index].Base =
AsmReadMsr64 (MTRR_LIB_IA32_VARIABLE_MTRR_BASE + (Index << 1));
VariableSettings->Mtrr[Index].Mask =
AsmReadMsr64 (MTRR_LIB_IA32_VARIABLE_MTRR_BASE + (Index << 1) + 1);
} else {
VariableSettings->Mtrr[Index].Base = MtrrSetting->Variables.Mtrr[Index].Base;
VariableSettings->Mtrr[Index].Mask = MtrrSetting->Variables.Mtrr[Index].Mask;
}
}
return VariableSettings;
@ -404,6 +426,7 @@ MtrrGetVariableMtrr (
}
return MtrrGetVariableMtrrWorker (
NULL,
GetVariableMtrrCountWorker (),
VariableSettings
);
@ -575,6 +598,7 @@ MtrrGetMemoryAttributeInVariableMtrr (
}
MtrrGetVariableMtrrWorker (
NULL,
GetVariableMtrrCountWorker (),
&VariableSettings
);
@ -949,6 +973,11 @@ ProgramVariableMtrr (
/**
Converts the Memory attribute value to MTRR_MEMORY_CACHE_TYPE.
If MtrrSetting is not NULL, gets the default memory attribute from input
MTRR settings buffer.
If MtrrSetting is NULL, gets the default memory attribute from MSR.
@param[in] MtrrSetting A buffer holding all MTRRs content.
@param[in] MtrrType MTRR memory type
@return The enum item in MTRR_MEMORY_CACHE_TYPE
@ -956,6 +985,7 @@ ProgramVariableMtrr (
**/
MTRR_MEMORY_CACHE_TYPE
GetMemoryCacheTypeFromMtrrType (
IN MTRR_SETTINGS *MtrrSetting,
IN UINT64 MtrrType
)
{
@ -975,7 +1005,7 @@ GetMemoryCacheTypeFromMtrrType (
// MtrrType is MTRR_CACHE_INVALID_TYPE, that means
// no MTRR covers the range
//
return MtrrGetDefaultMemoryType ();
return MtrrGetDefaultMemoryTypeWorker (MtrrSetting);
}
}
@ -1084,21 +1114,22 @@ MtrrPrecedence (
return MtrrType;
}
/**
This function will get the memory cache type of the specific address.
Worker function will get the memory cache type of the specific address.
This function is mainly for debug purpose.
If MtrrSetting is not NULL, gets the memory cache type from input
MTRR settings buffer.
If MtrrSetting is NULL, gets the memory cache type from MTRRs.
@param[in] MtrrSetting A buffer holding all MTRRs content.
@param[in] Address The specific address
@return Memory cache type of the specific address
**/
MTRR_MEMORY_CACHE_TYPE
EFIAPI
MtrrGetMemoryAttribute (
MtrrGetMemoryAttributeByAddressWorker (
IN MTRR_SETTINGS *MtrrSetting,
IN PHYSICAL_ADDRESS Address
)
{
@ -1114,14 +1145,14 @@ MtrrGetMemoryAttribute (
UINTN VariableMtrrCount;
MTRR_VARIABLE_SETTINGS VariableSettings;
if (!IsMtrrSupported ()) {
return CacheUncacheable;
}
//
// Check if MTRR is enabled, if not, return UC as attribute
//
TempQword = AsmReadMsr64 (MTRR_LIB_IA32_MTRR_DEF_TYPE);
if (MtrrSetting == NULL) {
TempQword = AsmReadMsr64 (MTRR_LIB_IA32_MTRR_DEF_TYPE);
} else {
TempQword = MtrrSetting->MtrrDefType;
}
MtrrType = MTRR_CACHE_INVALID_TYPE;
if ((TempQword & MTRR_LIB_CACHE_MTRR_ENABLED) == 0) {
@ -1146,9 +1177,13 @@ MtrrGetMemoryAttribute (
SubIndex =
((UINTN)Address - mMtrrLibFixedMtrrTable[Index].BaseAddress) /
mMtrrLibFixedMtrrTable[Index].Length;
TempQword = AsmReadMsr64 (mMtrrLibFixedMtrrTable[Index].Msr);
if (MtrrSetting == NULL) {
TempQword = AsmReadMsr64 (mMtrrLibFixedMtrrTable[Index].Msr);
} else {
TempQword = MtrrSetting->Fixed.Mtrr[Index];
}
MtrrType = RShiftU64 (TempQword, SubIndex * 8) & 0xFF;
return GetMemoryCacheTypeFromMtrrType (MtrrType);
return GetMemoryCacheTypeFromMtrrType (MtrrSetting, MtrrType);
}
}
}
@ -1156,6 +1191,7 @@ MtrrGetMemoryAttribute (
MtrrLibInitializeMtrrMask(&MtrrValidBitsMask, &MtrrValidAddressMask);
MtrrGetVariableMtrrWorker (
MtrrSetting,
GetVariableMtrrCountWorker (),
&VariableSettings
);
@ -1183,12 +1219,35 @@ MtrrGetMemoryAttribute (
}
}
}
CacheType = GetMemoryCacheTypeFromMtrrType (MtrrType);
CacheType = GetMemoryCacheTypeFromMtrrType (MtrrSetting, MtrrType);
return CacheType;
}
/**
This function will get the memory cache type of the specific address.
This function is mainly for debug purpose.
@param[in] Address The specific address
@return Memory cache type of the specific address
**/
MTRR_MEMORY_CACHE_TYPE
EFIAPI
MtrrGetMemoryAttribute (
IN PHYSICAL_ADDRESS Address
)
{
if (!IsMtrrSupported ()) {
return CacheUncacheable;
}
return MtrrGetMemoryAttributeByAddressWorker (NULL, Address);
}
/**
This function prints all MTRRs for debugging.
@ -1479,7 +1538,7 @@ MtrrSetMemoryAttribute (
//
VariableMtrrCount = GetVariableMtrrCountWorker ();
FirmwareVariableMtrrCount = GetFirmwareVariableMtrrCountWorker ();
MtrrGetVariableMtrrWorker (VariableMtrrCount, &OriginalVariableSettings);
MtrrGetVariableMtrrWorker (NULL, VariableMtrrCount, &OriginalVariableSettings);
CopyMem (&WorkingVariableSettings, &OriginalVariableSettings, sizeof (WorkingVariableSettings));
ProgramVariableSettings = TRUE;
VariableSettings = &WorkingVariableSettings;
@ -1839,6 +1898,7 @@ MtrrGetAllMtrrs (
// Get variable MTRRs
//
MtrrGetVariableMtrrWorker (
NULL,
GetVariableMtrrCountWorker (),
&MtrrSetting->Variables
);