diff options
Diffstat (limited to 'IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c')
| -rw-r--r-- | IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c | 78 |
1 files changed, 66 insertions, 12 deletions
diff --git a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c index dfdac356c..bf2760550 100644 --- a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c +++ b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c @@ -1,6 +1,6 @@ /** @file
-Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions
@@ -33,6 +33,10 @@ UINT64 mLowWater = 0xffffffffffffffffULL; extern BBS_TABLE *mBbsTable;
+extern VOID *mRuntimeSmbiosEntryPoint;
+extern EFI_PHYSICAL_ADDRESS mReserveSmbiosEntryPoint;
+extern EFI_PHYSICAL_ADDRESS mStructureTableAddress;
+
/**
Print the BBS Table.
@@ -777,6 +781,63 @@ LegacyGetDataOrTable ( return EFI_SUCCESS;
}
+/**
+ Copy SMBIOS table to EfiReservedMemoryType of memory for legacy boot.
+
+**/
+VOID
+CreateSmbiosTableInReservedMemory (
+ VOID
+ )
+{
+ SMBIOS_TABLE_ENTRY_POINT *EntryPointStructure;
+
+ if ((mRuntimeSmbiosEntryPoint == NULL) ||
+ (mReserveSmbiosEntryPoint == 0) ||
+ (mStructureTableAddress == 0)) {
+ return;
+ }
+
+ EntryPointStructure = (SMBIOS_TABLE_ENTRY_POINT *) mRuntimeSmbiosEntryPoint;
+
+ //
+ // Copy SMBIOS Entry Point Structure
+ //
+ CopyMem (
+ (VOID *)(UINTN) mReserveSmbiosEntryPoint,
+ EntryPointStructure,
+ EntryPointStructure->EntryPointLength
+ );
+
+ //
+ // Copy SMBIOS Structure Table into EfiReservedMemoryType memory
+ //
+ CopyMem (
+ (VOID *)(UINTN) mStructureTableAddress,
+ (VOID *)(UINTN) EntryPointStructure->TableAddress,
+ EntryPointStructure->TableLength
+ );
+
+ //
+ // Update TableAddress in Entry Point Structure
+ //
+ EntryPointStructure = (SMBIOS_TABLE_ENTRY_POINT *)(UINTN) mReserveSmbiosEntryPoint;
+ EntryPointStructure->TableAddress = (UINT32)(UINTN) mStructureTableAddress;
+
+ //
+ // Fixup checksums in the Entry Point Structure
+ //
+ EntryPointStructure->IntermediateChecksum = 0;
+ EntryPointStructure->EntryPointStructureChecksum = 0;
+
+ EntryPointStructure->IntermediateChecksum =
+ CalculateCheckSum8 (
+ (UINT8 *) EntryPointStructure + OFFSET_OF (SMBIOS_TABLE_ENTRY_POINT, IntermediateAnchorString),
+ EntryPointStructure->EntryPointLength - OFFSET_OF (SMBIOS_TABLE_ENTRY_POINT, IntermediateAnchorString)
+ );
+ EntryPointStructure->EntryPointStructureChecksum =
+ CalculateCheckSum8 ((UINT8 *) EntryPointStructure, EntryPointStructure->EntryPointLength);
+}
/**
Assign drive number to legacy HDD drives prior to booting an EFI
@@ -815,7 +876,6 @@ GenericLegacyBoot ( EFI_HANDLE IdeController;
UINTN HandleCount;
EFI_HANDLE *HandleBuffer;
- VOID *SmbiosTable;
VOID *AcpiTable;
UINTN ShadowAddress;
UINT32 Granularity;
@@ -904,21 +964,15 @@ GenericLegacyBoot ( );
Private->Legacy16Table->E820Length = (UINT32) CopySize;
}
- //
- // Get SMBIOS and ACPI table pointers
- //
- SmbiosTable = NULL;
- EfiGetSystemConfigurationTable (
- &gEfiSmbiosTableGuid,
- &SmbiosTable
- );
+
//
// We do not ASSERT if SmbiosTable not found. It is possbile that a platform does not produce SmbiosTable.
//
- if (SmbiosTable == NULL) {
+ if (mReserveSmbiosEntryPoint == 0) {
DEBUG ((EFI_D_INFO, "Smbios table is not found!\n"));
}
- EfiToLegacy16BootTable->SmbiosTable = (UINT32)(UINTN)SmbiosTable;
+ CreateSmbiosTableInReservedMemory ();
+ EfiToLegacy16BootTable->SmbiosTable = (UINT32)(UINTN)mReserveSmbiosEntryPoint;
AcpiTable = NULL;
Status = EfiGetSystemConfigurationTable (
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