Be clear about which SMC calling convention is being used.

Change-Id: I3b8f2e55f9a3baeb462d59effc9a99ac56aeaa7d
diff --git a/src/arch/aarch64/hypervisor/psci_handler.c b/src/arch/aarch64/hypervisor/psci_handler.c
index 5c87589..b98dd22 100644
--- a/src/arch/aarch64/hypervisor/psci_handler.c
+++ b/src/arch/aarch64/hypervisor/psci_handler.c
@@ -37,7 +37,7 @@
 /* Performs arch specific boot time initialisation. */
 void arch_one_time_init(void)
 {
-	el3_psci_version = smc(PSCI_VERSION, 0, 0, 0);
+	el3_psci_version = smc32(PSCI_VERSION, 0, 0, 0);
 
 	/* Check there's nothing unexpected about PSCI. */
 	switch (el3_psci_version) {
@@ -100,7 +100,7 @@
 				*ret = 0;
 			} else {
 				/* PSCI 1.x only defines two feature bits. */
-				*ret = smc(func, arg0, 0, 0) & 0x3;
+				*ret = smc32(func, arg0, 0, 0) & 0x3;
 			}
 			break;
 
@@ -123,12 +123,12 @@
 		break;
 
 	case PSCI_SYSTEM_OFF:
-		smc(PSCI_SYSTEM_OFF, 0, 0, 0);
+		smc32(PSCI_SYSTEM_OFF, 0, 0, 0);
 		panic("System off failed");
 		break;
 
 	case PSCI_SYSTEM_RESET:
-		smc(PSCI_SYSTEM_RESET, 0, 0, 0);
+		smc32(PSCI_SYSTEM_RESET, 0, 0, 0);
 		panic("System reset failed");
 		break;
 
@@ -161,14 +161,14 @@
 		 * vcpu registers will be ignored.
 		 */
 		arch_regs_set_pc_arg(&vcpu->regs, ipa_init(arg1), arg2);
-		*ret = smc(PSCI_CPU_SUSPEND | SMCCC_64_BIT, arg0,
-			   (uintreg_t)&cpu_entry, (uintreg_t)vcpu->cpu);
+		*ret = smc64(PSCI_CPU_SUSPEND, arg0, (uintreg_t)&cpu_entry,
+			     (uintreg_t)vcpu->cpu);
 		break;
 	}
 
 	case PSCI_CPU_OFF:
 		cpu_off(vcpu->cpu);
-		smc(PSCI_CPU_OFF, 0, 0, 0);
+		smc32(PSCI_CPU_OFF, 0, 0, 0);
 		panic("CPU off failed");
 		break;
 
@@ -191,8 +191,8 @@
 		 * itself off).
 		 */
 		do {
-			*ret = smc(PSCI_CPU_ON | SMCCC_64_BIT, arg0,
-				   (uintreg_t)&cpu_entry, (uintreg_t)c);
+			*ret = smc64(PSCI_CPU_ON, arg0, (uintreg_t)&cpu_entry,
+				     (uintreg_t)c);
 		} while (*ret == PSCI_ERROR_ALREADY_ON);
 
 		if (*ret != PSCI_RETURN_SUCCESS) {