diff --git a/spm/cactus/cactus_debug.c b/spm/cactus/cactus_debug.c
new file mode 100644
index 0000000..cce0973
--- /dev/null
+++ b/spm/cactus/cactus_debug.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2020, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <drivers/arm/pl011.h>
+#include <drivers/console.h>
+
+#include "cactus.h"
+#include "spci_helpers.h"
+
+static int (*putc_impl)(int);
+
+static int putc_hypcall(int c)
+{
+	spm_debug_log((char)c);
+
+	return c;
+}
+
+static int putc_uart(int c)
+{
+	console_pl011_putc(c);
+
+	return c;
+}
+
+void set_putc_impl(enum stdout_route route)
+{
+	switch (route) {
+
+	case HVC_CALL_AS_STDOUT:
+		putc_impl = putc_hypcall;
+		return;
+
+	case PL011_AS_STDOUT:
+	default:
+		break;
+	}
+
+	putc_impl = putc_uart;
+}
+
+int console_putc(int c)
+{
+	if (!putc_impl) {
+		return -1;
+	}
+
+	return putc_impl(c);
+}