diff --git a/include/services/rmmd_svc.h b/include/services/rmmd_svc.h
index 0cc8628..3f6ecec 100644
--- a/include/services/rmmd_svc.h
+++ b/include/services/rmmd_svc.h
@@ -161,6 +161,9 @@
 #define RMM_EL3_TOKEN_SIGN_PULL_RESP_OP         U(2)
 #define RMM_EL3_TOKEN_SIGN_GET_RAK_PUB_OP       U(3)
 
+#define RMM_ALLOCATE_MEC_KEY			SMC64_RMMD_EL3_FID(U(6))
+#define RMM_RELEASE_MEC_KEY			SMC64_RMMD_EL3_FID(U(7))
+
 /* ECC Curve types for attest key generation */
 #define ATTEST_KEY_CURVE_ECC_SECP384R1		U(0)
 
diff --git a/services/std_svc/rmmd/rmmd_main.c b/services/std_svc/rmmd/rmmd_main.c
index 13ea5db..5214358 100644
--- a/services/std_svc/rmmd/rmmd_main.c
+++ b/services/std_svc/rmmd/rmmd_main.c
@@ -521,6 +521,10 @@
 		VERBOSE("RMMD: running rmmd_rmm_sync_exit\n");
 		rmmd_rmm_sync_exit(x1);
 
+	case RMM_ALLOCATE_MEC_KEY:
+		SMC_RET0(handle);
+	case RMM_RELEASE_MEC_KEY:
+		SMC_RET0(handle);
 	default:
 		WARN("RMMD: Unsupported RMM-EL3 call 0x%08x\n", smc_fid);
 		SMC_RET1(handle, SMC_UNK);