diff --git a/include/lib/smccc.h b/include/lib/smccc.h
index 76e6023..dd3c578 100644
--- a/include/lib/smccc.h
+++ b/include/lib/smccc.h
@@ -20,7 +20,7 @@
 						SMCCC_VERSION_MINOR_SHIFT))
 
 #define SMCCC_MAJOR_VERSION U(1)
-#define SMCCC_MINOR_VERSION U(1)
+#define SMCCC_MINOR_VERSION U(2)
 
 /*******************************************************************************
  * Bit definitions inside the function id as per the SMC calling convention
@@ -83,6 +83,12 @@
 #define SMC_UNK				-1
 #define SMC_PREEMPTED			-2	/* Not defined by the SMCCC */
 
+/* Return codes for Arm Architecture Service SMC calls */
+#define SMC_ARCH_CALL_SUCCESS		0
+#define SMC_ARCH_CALL_NOT_SUPPORTED	-1
+#define SMC_ARCH_CALL_NOT_REQUIRED	-2
+#define SMC_ARCH_CALL_INVAL_PARAM	-3
+
 /* Various flags passed to SMC handlers */
 #define SMC_FROM_SECURE		(U(0) << 0)
 #define SMC_FROM_NON_SECURE	(U(1) << 0)