);\r
\r
\r
+/**\r
+ Initializes the valid address mask for MTRRs.\r
+\r
+ This function initializes the valid bits mask and valid address mask for MTRRs.\r
+\r
+**/\r
+UINT64\r
+InitializeAddressMtrrMask (\r
+ VOID\r
+ )\r
+{\r
+ UINT32 RegEax;\r
+ UINT8 PhysicalAddressBits; \r
+ UINT64 ValidMtrrBitsMask;\r
+\r
+ AsmCpuid (0x80000000, &RegEax, NULL, NULL, NULL);\r
+\r
+ if (RegEax >= 0x80000008) {\r
+ AsmCpuid (0x80000008, &RegEax, NULL, NULL, NULL);\r
+\r
+ PhysicalAddressBits = (UINT8) RegEax;\r
+ } else {\r
+ PhysicalAddressBits = 36;\r
+ }\r
+\r
+ ValidMtrrBitsMask = LShiftU64 (1, PhysicalAddressBits) - 1;\r
+ return (ValidMtrrBitsMask & 0xfffffffffffff000ULL);\r
+}\r
\r
EFI_STATUS\r
EFIAPI\r
UINT64 HighMemoryLength;\r
UINT8 Index;\r
MTRR_SETTINGS MtrrSetting;\r
+ UINT64 ValidMtrrAddressMask;\r
\r
//\r
// Load Cache PPI\r
&BootMode\r
);\r
\r
+ ValidMtrrAddressMask = InitializeAddressMtrrMask ();\r
+\r
//\r
// Determine memory usage\r
//\r
//\r
Index = 0;\r
MtrrSetting.Variables.Mtrr[0].Base = (FixedPcdGet32 (PcdFlashAreaBaseAddress) | CacheWriteProtected);\r
- MtrrSetting.Variables.Mtrr[0].Mask = ((~((UINT64)(FixedPcdGet32 (PcdFlashAreaSize) - 1))) & MTRR_LIB_CACHE_VALID_ADDRESS) | MTRR_LIB_CACHE_MTRR_ENABLED;\r
+ MtrrSetting.Variables.Mtrr[0].Mask = ((~((UINT64)(FixedPcdGet32 (PcdFlashAreaSize) - 1))) & ValidMtrrAddressMask) | MTRR_LIB_CACHE_MTRR_ENABLED;\r
Index ++;\r
\r
MemOverflow =0;\r
while (MaxMemoryLength > MemOverflow){\r
- MtrrSetting.Variables.Mtrr[Index].Base = (MemOverflow & MTRR_LIB_CACHE_VALID_ADDRESS) | CacheWriteBack;\r
+ MtrrSetting.Variables.Mtrr[Index].Base = (MemOverflow & ValidMtrrAddressMask) | CacheWriteBack;\r
MemoryLength = MaxMemoryLength - MemOverflow;\r
MemoryLength = GetPowerOfTwo64 (MemoryLength);\r
- MtrrSetting.Variables.Mtrr[Index].Mask = ((~(MemoryLength - 1)) & MTRR_LIB_CACHE_VALID_ADDRESS) | MTRR_LIB_CACHE_MTRR_ENABLED;\r
+ MtrrSetting.Variables.Mtrr[Index].Mask = ((~(MemoryLength - 1)) & ValidMtrrAddressMask) | MTRR_LIB_CACHE_MTRR_ENABLED;\r
\r
MemOverflow += MemoryLength;\r
Index++;\r
while (MaxMemoryLength != MemoryLength) {\r
MemoryLengthUc = GetPowerOfTwo64 (MaxMemoryLength - MemoryLength);\r
\r
- MtrrSetting.Variables.Mtrr[Index].Base = ((MaxMemoryLength - MemoryLengthUc) & MTRR_LIB_CACHE_VALID_ADDRESS) | CacheUncacheable;\r
- MtrrSetting.Variables.Mtrr[Index].Mask= ((~(MemoryLengthUc - 1)) & MTRR_LIB_CACHE_VALID_ADDRESS) | MTRR_LIB_CACHE_MTRR_ENABLED;\r
+ MtrrSetting.Variables.Mtrr[Index].Base = ((MaxMemoryLength - MemoryLengthUc) & ValidMtrrAddressMask) | CacheUncacheable;\r
+ MtrrSetting.Variables.Mtrr[Index].Mask= ((~(MemoryLengthUc - 1)) & ValidMtrrAddressMask) | MTRR_LIB_CACHE_MTRR_ENABLED;\r
MaxMemoryLength -= MemoryLengthUc;\r
Index++;\r
}\r
\r
MemOverflow =0x100000000;\r
while (HighMemoryLength > 0) {\r
- MtrrSetting.Variables.Mtrr[Index].Base = (MemOverflow & MTRR_LIB_CACHE_VALID_ADDRESS) | CacheWriteBack;\r
+ MtrrSetting.Variables.Mtrr[Index].Base = (MemOverflow & ValidMtrrAddressMask) | CacheWriteBack;\r
MemoryLength = HighMemoryLength;\r
MemoryLength = GetPowerOfTwo64 (MemoryLength);\r
\r
MemoryLength = MemOverflow;\r
}\r
\r
- MtrrSetting.Variables.Mtrr[Index].Mask = ((~(MemoryLength - 1)) & MTRR_LIB_CACHE_VALID_ADDRESS) | MTRR_LIB_CACHE_MTRR_ENABLED;\r
+ MtrrSetting.Variables.Mtrr[Index].Mask = ((~(MemoryLength - 1)) & ValidMtrrAddressMask) | MTRR_LIB_CACHE_MTRR_ENABLED;\r
\r
MemOverflow += MemoryLength;\r
HighMemoryLength -= MemoryLength;\r