diff options
Diffstat (limited to 'EdkModulePkg/Core/DxeIplPeim/Ia32/VirtualMemory.c')
| -rw-r--r-- | EdkModulePkg/Core/DxeIplPeim/Ia32/VirtualMemory.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/EdkModulePkg/Core/DxeIplPeim/Ia32/VirtualMemory.c b/EdkModulePkg/Core/DxeIplPeim/Ia32/VirtualMemory.c index 609fea2eca..89b18c36f8 100644 --- a/EdkModulePkg/Core/DxeIplPeim/Ia32/VirtualMemory.c +++ b/EdkModulePkg/Core/DxeIplPeim/Ia32/VirtualMemory.c @@ -57,7 +57,6 @@ Returns: --*/
{
- UINT32 RegEax;
UINT8 PhysicalAddressBits;
EFI_PHYSICAL_ADDRESS PageAddress;
UINTN IndexOfPml4Entries;
@@ -71,16 +70,16 @@ Returns: PAGE_TABLE_ENTRY *PageDirectoryEntry;
UINTN TotalPagesNum;
UINTN BigPageAddress;
+ VOID *Hob;
//
- // Get physical address bits supported.
+ // Get physical address bits supported from CPU HOB.
//
- AsmCpuid (0x80000000, &RegEax, NULL, NULL, NULL);
- if (RegEax >= 0x80000008) {
- AsmCpuid (0x80000008, &RegEax, NULL, NULL, NULL);
- PhysicalAddressBits = (UINT8) RegEax;
- } else {
- PhysicalAddressBits = 36;
+ PhysicalAddressBits = 36;
+
+ Hob = GetFirstHob (EFI_HOB_TYPE_CPU);
+ if (Hob != NULL) {
+ PhysicalAddressBits = ((EFI_HOB_CPU *) Hob)->SizeOfMemorySpace;
}
//
|