diff options
Diffstat (limited to 'SecurityPkg/VariableAuthenticated/EsalVariableDxeSal/Variable.c')
| -rw-r--r-- | SecurityPkg/VariableAuthenticated/EsalVariableDxeSal/Variable.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/SecurityPkg/VariableAuthenticated/EsalVariableDxeSal/Variable.c b/SecurityPkg/VariableAuthenticated/EsalVariableDxeSal/Variable.c index 2be925d236..d0269c9da7 100644 --- a/SecurityPkg/VariableAuthenticated/EsalVariableDxeSal/Variable.c +++ b/SecurityPkg/VariableAuthenticated/EsalVariableDxeSal/Variable.c @@ -2939,6 +2939,58 @@ ReclaimForOS( }
/**
+ Flush the HOB variable to NV variable storage.
+**/
+VOID
+FlushHob2Nv (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ VOID *GuidHob;
+ VARIABLE_STORE_HEADER *VariableStoreHeader;
+ VARIABLE_HEADER *VariableHeader;
+ //
+ // Get HOB variable store.
+ //
+ GuidHob = GetFirstGuidHob (&gEfiAuthenticatedVariableGuid);
+ if (GuidHob != NULL) {
+ VariableStoreHeader = (VARIABLE_STORE_HEADER *) GET_GUID_HOB_DATA (GuidHob);
+ if (CompareGuid (&VariableStoreHeader->Signature, &gEfiAuthenticatedVariableGuid) &&
+ (VariableStoreHeader->Format == VARIABLE_STORE_FORMATTED) &&
+ (VariableStoreHeader->State == VARIABLE_STORE_HEALTHY)
+ ) {
+ DEBUG ((EFI_D_INFO, "HOB Variable Store appears to be valid.\n"));
+ //
+ // Flush the HOB variable to NV Variable storage.
+ //
+ for ( VariableHeader = (VARIABLE_HEADER *) HEADER_ALIGN (VariableStoreHeader + 1)
+ ; (VariableHeader < (VARIABLE_HEADER *) HEADER_ALIGN ((UINTN) VariableStoreHeader + VariableStoreHeader->Size)
+ &&
+ (VariableHeader->StartId == VARIABLE_DATA))
+ ; VariableHeader = (VARIABLE_HEADER *) HEADER_ALIGN ((UINTN) (VariableHeader + 1)
+ + VariableHeader->NameSize + GET_PAD_SIZE (VariableHeader->NameSize)
+ + VariableHeader->DataSize + GET_PAD_SIZE (VariableHeader->DataSize)
+ )
+ ) {
+ ASSERT (VariableHeader->State == VAR_ADDED);
+ ASSERT ((VariableHeader->Attributes & EFI_VARIABLE_NON_VOLATILE) != 0);
+ Status = EsalSetVariable (
+ (CHAR16 *) (VariableHeader + 1),
+ &VariableHeader->VendorGuid,
+ VariableHeader->Attributes,
+ VariableHeader->DataSize,
+ (UINT8 *) (VariableHeader + 1) + VariableHeader->NameSize + GET_PAD_SIZE (VariableHeader->NameSize),
+ Physical,
+ mVariableModuleGlobal
+ );
+ ASSERT_EFI_ERROR (Status);
+ }
+ }
+ }
+}
+
+/**
Initializes variable store area for non-volatile and volatile variable.
This function allocates and initializes memory space for global context of ESAL
|