1 /***************************************************************************
2 * Copyright (C) 2015 Paul Fertser <fercerpav@gmail.com> *
4 * This program is free software; you can redistribute it and/or modify *
5 * it under the terms of the GNU General Public License as published by *
6 * the Free Software Foundation; either version 2 of the License, or *
7 * (at your option) any later version. *
9 * This program is distributed in the hope that it will be useful, *
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
12 * GNU General Public License for more details. *
14 * You should have received a copy of the GNU General Public License *
15 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
16 ***************************************************************************/
18 #ifndef OPENOCD_TARGET_ARMV7M_TRACE_H
19 #define OPENOCD_TARGET_ARMV7M_TRACE_H
21 #include <target/target.h>
26 * Holds the interface to ITM and DWT configuration functions.
29 enum itm_ts_prescaler {
30 ITM_TS_PRESCALE1, /**< no prescaling for the timestamp counter */
31 ITM_TS_PRESCALE4, /**< refclock divided by 4 for the timestamp counter */
32 ITM_TS_PRESCALE16, /**< refclock divided by 16 for the timestamp counter */
33 ITM_TS_PRESCALE64, /**< refclock divided by 64 for the timestamp counter */
36 struct armv7m_trace_config {
37 /** Bitmask of currently enabled ITM stimuli */
39 /** Identifier for multi-source trace stream formatting */
40 unsigned int trace_bus_id;
41 /** Prescaler for the timestamp counter */
42 enum itm_ts_prescaler itm_ts_prescale;
43 /** Enable differential timestamps */
44 bool itm_diff_timestamps;
45 /** Enable async timestamps model */
46 bool itm_async_timestamps;
47 /** Enable synchronisation packet transmission (for sync port only) */
48 bool itm_synchro_packets;
49 /** Config ITM after target examine */
50 bool itm_deferred_config;
53 extern const struct command_registration armv7m_trace_command_handlers[];
56 * Configure hardware accordingly to the current ITM target settings
58 int armv7m_trace_itm_config(struct target *target);
60 #endif /* OPENOCD_TARGET_ARMV7M_TRACE_H */