diff --git a/boards/OLIMEX_STM32_E407/board.h b/boards/OLIMEX_STM32_E407/board.h
index 8092dfa1e..bf18f37dc 100644
--- a/boards/OLIMEX_STM32_E407/board.h
+++ b/boards/OLIMEX_STM32_E407/board.h
@@ -39,7 +39,6 @@
 
 /*
  * Board frequencies.
- * NOTE: The LSE crystal is not fitted by default on the board.
  */
 #define STM32_LSECLK            32768
 #define STM32_HSECLK            12000000
diff --git a/tools/gencfg/processors/boards/stm32f4xx/datamodel/stm32f4board.xml b/tools/gencfg/processors/boards/stm32f4xx/datamodel/stm32f4board.xml
index 0a5959eec..343d3ea85 100644
--- a/tools/gencfg/processors/boards/stm32f4xx/datamodel/stm32f4board.xml
+++ b/tools/gencfg/processors/boards/stm32f4xx/datamodel/stm32f4board.xml
@@ -9,7 +9,8 @@
   HSEFrequency="0"
   LSEFrequency="0"
   BoardPHYID="MII_KS8721_ID"
-  BoardPHYType="RMII">
+  BoardPHYType="RMII"
+  VDD="330">
   <ports>
     <GPIOA>
       <pin0
diff --git a/tools/gencfg/processors/boards/stm32f4xx/templates/board.h.ftl b/tools/gencfg/processors/boards/stm32f4xx/templates/board.h.ftl
index 4a6529fd0..8080f2ba8 100644
--- a/tools/gencfg/processors/boards/stm32f4xx/templates/board.h.ftl
+++ b/tools/gencfg/processors/boards/stm32f4xx/templates/board.h.ftl
@@ -49,6 +49,42 @@
 [/#if]
 [/#if]
 
+/*
+ * Board oscillators-related settings.
+[#if doc1.board.@LSEFrequency[0]?number == 0]
+ * NOTE: LSE not fitted.
+[/#if]
+[#if doc1.board.@HSEFrequency[0]?number == 0]
+ * NOTE: HSE not fitted.
+[/#if]
+ */
+#if !defined(STM32_LSECLK)
+#define STM32_LSECLK            ${doc1.board.@LSEFrequency[0]}
+#endif
+
+#if !defined(STM32_HSECLK)
+#define STM32_HSECLK            ${doc1.board.@HSEFrequency[0]}
+#endif
+
+[#if doc1.board.@HSEBypass[0]?string == "true"]
+#define STM32_HSE_BYPASS
+[/#if]
+
+/*
+ * Board voltages.
+ * Required for performance limits calculation.
+ */
+#define STM32_VDD               ${doc1.board.@VDD[0]}
+
+/*
+ * MCU type as defined in the ST header file stm32f4xx.h.
+ */
+#define STM32F4XX
+
+/*
+ * IO pins assignments.
+ */
+
 #if !defined(_FROM_ASM_)
 #ifdef __cplusplus
 extern "C" {
diff --git a/tools/gencfg/schema/boards/stm32f4xx_board.xsd b/tools/gencfg/schema/boards/stm32f4xx_board.xsd
index 8b7ba2bbb..0b3622e6f 100644
--- a/tools/gencfg/schema/boards/stm32f4xx_board.xsd
+++ b/tools/gencfg/schema/boards/stm32f4xx_board.xsd
@@ -17,7 +17,7 @@
             minOccurs="1">
           </xs:element>
         </xs:sequence>
-                <xs:attribute
+        <xs:attribute
           name="HSEBypass"
           type="xs:boolean"
           use="required">
@@ -32,7 +32,6 @@
           </xs:annotation>
           <xs:simpleType>
             <xs:restriction base="xs:int">
-
               <xs:minInclusive value="0"></xs:minInclusive>
             </xs:restriction>
           </xs:simpleType>
@@ -50,12 +49,26 @@
               <xs:minInclusive value="0"></xs:minInclusive>
             </xs:restriction>
           </xs:simpleType>
-        </xs:attribute>

+        </xs:attribute>
+
+        <xs:attribute
+          name="VDD"
+          use="required">
+                    <xs:annotation>
+                      <xs:documentation>STM32F4xx VDD.</xs:documentation>
+                    </xs:annotation>
+                    <xs:simpleType>
+            <xs:restriction base="xs:int">
+              <xs:minInclusive value="180"></xs:minInclusive>
+              <xs:whiteSpace value="collapse"></xs:whiteSpace>
+              <xs:maxInclusive value="360"></xs:maxInclusive>
+            </xs:restriction>
+          </xs:simpleType>
+        </xs:attribute>
       </xs:extension>
     </xs:complexContent>
   </xs:complexType>
 
-
   <xs:complexType name="portsType">
     <xs:sequence>
       <xs:element name="GPIOA" type="STM32GPIOv2PortType"
@@ -79,6 +92,5 @@
     </xs:sequence>
   </xs:complexType>
 
-
   <xs:element name="board" type="STM32F4xxBoardType"></xs:element>
 </xs:schema>