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diff --git a/src/target/openrisc/or1k_du.h b/src/target/openrisc/or1k_du.h
new file mode 100644
index 0000000000..564241d8c9
--- /dev/null
+++ b/src/target/openrisc/or1k_du.h
@@ -0,0 +1,77 @@
+/***************************************************************************
+ *   Copyright (C) 2013 Franck Jullien                                     *
+ *   elec4fun@gmail.com                                                    *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+
+#ifndef OR1K_DU
+#define OR1K_DU
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#define CPU_STALL	0
+#define CPU_UNSTALL	1
+
+#define CPU_RESET	0
+#define CPU_NOT_RESET	1
+
+int or1k_du_adv_register(void);
+
+/* Linear list over all available or1k debug unit */
+extern struct list_head du_list;
+
+struct or1k_du {
+	const char *name;
+	struct list_head list;
+	int options;
+
+	int (*or1k_jtag_init)(struct or1k_jtag *jtag_info);
+
+	int (*or1k_is_cpu_running)(struct or1k_jtag *jtag_info, int *running);
+
+	int (*or1k_cpu_stall)(struct or1k_jtag *jtag_info, int action);
+
+	int (*or1k_cpu_reset)(struct or1k_jtag *jtag_info, int action);
+
+	int (*or1k_jtag_read_cpu)(struct or1k_jtag *jtag_info,
+				  uint32_t addr, int count, uint32_t *value);
+
+	int (*or1k_jtag_write_cpu)(struct or1k_jtag *jtag_info,
+				   uint32_t addr, int count, const uint32_t *value);
+
+	int (*or1k_jtag_read_memory)(struct or1k_jtag *jtag_info, uint32_t addr, uint32_t size,
+					int count, uint8_t *buffer);
+
+	int (*or1k_jtag_write_memory)(struct or1k_jtag *jtag_info, uint32_t addr, uint32_t size,
+					 int count, const uint8_t *buffer);
+};
+
+static inline struct or1k_du *or1k_jtag_to_du(struct or1k_jtag *jtag_info)
+{
+	return (struct or1k_du *)jtag_info->du_core;
+}
+
+static inline struct or1k_du *or1k_to_du(struct or1k_common *or1k)
+{
+	struct or1k_jtag *jtag = &or1k->jtag;
+	return (struct or1k_du *)jtag->du_core;
+}
+
+#endif
+