1 files changed, 31 insertions, 9 deletions
diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c
index 3c360481f4..d394d237a5 100644
--- a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c
+++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c
@@ -2385,10 +2385,19 @@ Done:
   @param Data                       The buffer to return the contents of the variable. May be NULL
                                     with a zero DataSize in order to determine the size buffer needed.
 
-  @return EFI_INVALID_PARAMETER     Invalid parameter.
-  @return EFI_SUCCESS               Find the specified variable.
-  @return EFI_NOT_FOUND             Not found.
-  @return EFI_BUFFER_TO_SMALL       DataSize is too small for the result.
+  @retval EFI_SUCCESS               The function completed successfully.
+  @retval EFI_NOT_FOUND             The variable was not found.
+  @retval EFI_BUFFER_TOO_SMALL      The DataSize is too small for the result.
+  @retval EFI_INVALID_PARAMETER     VariableName is NULL.
+  @retval EFI_INVALID_PARAMETER     VendorGuid is NULL.
+  @retval EFI_INVALID_PARAMETER     DataSize is NULL.
+  @retval EFI_INVALID_PARAMETER     The DataSize is not too small and Data is NULL.
+  @retval EFI_DEVICE_ERROR          The variable could not be retrieved due to a hardware error.
+  @retval EFI_SECURITY_VIOLATION    The variable could not be retrieved due to an authentication failure.
+  @retval EFI_UNSUPPORTED           After ExitBootServices() has been called, this return code may be returned
+                                    if no variable storage is supported. The platform should describe this
+                                    runtime service as unsupported at runtime via an EFI_RT_PROPERTIES_TABLE
+                                    configuration table.
 
 **/
 EFI_STATUS
@@ -2479,6 +2488,11 @@ Done:
                                     GUID of an existing variable.
   @retval EFI_INVALID_PARAMETER     Null-terminator is not found in the first VariableNameSize bytes of
                                     the input VariableName buffer.
+  @retval EFI_DEVICE_ERROR          The variable could not be retrieved due to a hardware error.
+  @retval EFI_UNSUPPORTED           After ExitBootServices() has been called, this return code may be returned
+                                    if no variable storage is supported. The platform should describe this
+                                    runtime service as unsupported at runtime via an EFI_RT_PROPERTIES_TABLE
+                                    configuration table.
 
 **/
 EFI_STATUS
@@ -2576,11 +2590,19 @@ VariableServiceGetNextVariableName (
                                           data, this value contains the required size.
   @param Data                             Data pointer.
 
-  @return EFI_INVALID_PARAMETER           Invalid parameter.
-  @return EFI_SUCCESS                     Set successfully.
-  @return EFI_OUT_OF_RESOURCES            Resource not enough to set variable.
-  @return EFI_NOT_FOUND                   Not found.
-  @return EFI_WRITE_PROTECTED             Variable is read-only.
+  @retval EFI_SUCCESS                     The function completed successfully.
+  @retval EFI_NOT_FOUND                   The variable was not found.
+  @retval EFI_BUFFER_TOO_SMALL            The DataSize is too small for the result.
+  @retval EFI_INVALID_PARAMETER           VariableName is NULL.
+  @retval EFI_INVALID_PARAMETER           VendorGuid is NULL.
+  @retval EFI_INVALID_PARAMETER           DataSize is NULL.
+  @retval EFI_INVALID_PARAMETER           The DataSize is not too small and Data is NULL.
+  @retval EFI_DEVICE_ERROR                The variable could not be retrieved due to a hardware error.
+  @retval EFI_SECURITY_VIOLATION          The variable could not be retrieved due to an authentication failure.
+  @retval EFI_UNSUPPORTED                 After ExitBootServices() has been called, this return code may be returned
+                                          if no variable storage is supported. The platform should describe this
+                                          runtime service as unsupported at runtime via an EFI_RT_PROPERTIES_TABLE
+                                          configuration table.
 
 **/
 EFI_STATUS