diff --git a/realm/realm_debug.c b/realm/realm_debug.c
new file mode 100644
index 0000000..e9eb61e
--- /dev/null
+++ b/realm/realm_debug.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2022, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <arch_helpers.h>
+#include <host_shared_data.h>
+
+/*
+ * A printf formatted function used in the Realm world to log messages
+ * in the shared buffer.
+ * Locate the shared logging buffer and print its content
+ */
+void realm_printf(const char *fmt, ...)
+{
+	host_shared_data_t *guest_shared_data = realm_get_shared_structure();
+	char *log_buffer = (char *)guest_shared_data->log_buffer;
+	va_list args;
+
+	va_start(args, fmt);
+	spin_lock((spinlock_t *)&guest_shared_data->printf_lock);
+	if (strnlen((const char *)log_buffer, MAX_BUF_SIZE) == MAX_BUF_SIZE) {
+		(void)memset((char *)log_buffer, 0, MAX_BUF_SIZE);
+	}
+	(void)vsnprintf((char *)log_buffer +
+			strnlen((const char *)log_buffer, MAX_BUF_SIZE),
+			MAX_BUF_SIZE, fmt, args);
+	spin_unlock((spinlock_t *)&guest_shared_data->printf_lock);
+	va_end(args);
+}
+
+void __attribute__((__noreturn__)) do_panic(const char *file, int line)
+{
+	realm_printf("PANIC in file: %s line: %d\n", file, line);
+	while (true) {
+		continue;
+	}
+}
+
+/* This is used from printf() when crash dump is reached */
+int console_putc(int c)
+{
+	host_shared_data_t *guest_shared_data = realm_get_shared_structure();
+	char *log_buffer = (char *)guest_shared_data->log_buffer;
+
+	if ((c < 0) || (c > 127)) {
+		return -1;
+	}
+	spin_lock((spinlock_t *)&guest_shared_data->printf_lock);
+	if (strnlen((const char *)log_buffer, MAX_BUF_SIZE) == MAX_BUF_SIZE) {
+		(void)memset((char *)log_buffer, 0, MAX_BUF_SIZE);
+	}
+	*((char *)log_buffer + strnlen((const char *)log_buffer, MAX_BUF_SIZE)) = c;
+	spin_unlock((spinlock_t *)&guest_shared_data->printf_lock);
+
+	return c;
+}