Implement BlEfiGetSystemConfigurationTable() and move BlEfiGetSecureBootStatus() to desired place

xtldr/CMakeLists.txt

@@ -14,6 +14,7 @@ list(APPEND XTLDR_SOURCE
     ${XTLDR_SOURCE_DIR}/console.c
     ${XTLDR_SOURCE_DIR}/efiutil.c
     ${XTLDR_SOURCE_DIR}/string.c
+    ${XTLDR_SOURCE_DIR}/system.c
     ${XTLDR_SOURCE_DIR}/volume.c
     ${XTLDR_SOURCE_DIR}/xtldr.c)
 

xtldr/efiutil.c

@@ -162,38 +162,6 @@ BlDbgPrint(IN PUINT16 Format,
     }
 }
 
-/**
- * This routine checks whether SecureBoot is enabled or not.
- *
- * @return Numeric representation of SecureBoot status (0 = Disabled, >0 = Enabled, <0 SetupMode).
- *
- * @since XT 1.0
- */
-INT_PTR
-BlEfiGetSecureBootStatus()
-{
-    EFI_GUID VarGuid = EFI_GLOBAL_VARIABLE_GUID;
-    INT_PTR SecureBootStatus = 0;
-    UCHAR VarValue = 0;
-    UINT_PTR Size;
-
-    Size = sizeof(VarValue);
-    if(EfiSystemTable->RuntimeServices->GetVariable(L"SecureBoot", &VarGuid,
-       NULL, &Size, &VarValue) == STATUS_EFI_SUCCESS)
-    {
-        SecureBootStatus = (INT_PTR)VarValue;
-
-        if((EfiSystemTable->RuntimeServices->GetVariable(L"SetupMode", &VarGuid,
-           NULL, &Size, &VarValue) == STATUS_EFI_SUCCESS) && VarValue != 0)
-        {
-            SecureBootStatus = -1;
-        }
-    }
-
-    /* Return SecureBoot status */
-    return SecureBootStatus;
-}
-
 /**
  * This routine allocates a pool memory.
  *

xtldr/system.c

@@ -0,0 +1,75 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/system.c
+ * DESCRIPTION:     EFI system information
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <xtbl.h>
+
+
+/**
+ * This routine checks whether SecureBoot is enabled or not.
+ *
+ * @return Numeric representation of SecureBoot status (0 = Disabled, >0 = Enabled, <0 SetupMode).
+ *
+ * @since XT 1.0
+ */
+INT_PTR
+BlEfiGetSecureBootStatus()
+{
+    EFI_GUID VarGuid = EFI_GLOBAL_VARIABLE_GUID;
+    INT_PTR SecureBootStatus = 0;
+    UCHAR VarValue = 0;
+    UINT_PTR Size;
+
+    Size = sizeof(VarValue);
+    if(EfiSystemTable->RuntimeServices->GetVariable(L"SecureBoot", &VarGuid,
+       NULL, &Size, &VarValue) == STATUS_EFI_SUCCESS)
+    {
+        SecureBootStatus = (INT_PTR)VarValue;
+
+        if((EfiSystemTable->RuntimeServices->GetVariable(L"SetupMode", &VarGuid,
+           NULL, &Size, &VarValue) == STATUS_EFI_SUCCESS) && VarValue != 0)
+        {
+            SecureBootStatus = -1;
+        }
+    }
+
+    /* Return SecureBoot status */
+    return SecureBootStatus;
+}
+
+/**
+ * Read system configuration from a specified table.
+ *
+ * @param TableGuid
+ *        Supplies a pointer to the GUID to search for.
+ *
+ * @param Table
+ *        Supplies a pointer that will point to the configuration table.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+EFI_STATUS
+BlEfiGetSystemConfigurationTable(IN PEFI_GUID TableGuid,
+                                 OUT PVOID *Table)
+{
+    SIZE_T Size = sizeof(EFI_GUID);
+    UINT_PTR Index;
+
+    for(Index = 0; Index < EfiSystemTable->NumberOfTableEntries; Index++)
+    {
+        if(RtlCompareMemory((PVOID)&EfiSystemTable->ConfigurationTable[Index].VendorGuid, TableGuid, Size) == Size)
+        {
+            *Table = EfiSystemTable->ConfigurationTable[Index].VendorTable;
+            return STATUS_EFI_SUCCESS;
+        }
+    }
+
+    /* Table not found */
+    return STATUS_EFI_NOT_FOUND;
+}