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   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 /***************************************************************************
   4  *   Copyright (C) 2015  Paul Fertser <fercerpav@gmail.com>                *
   5  ***************************************************************************/
   6
   7 #ifndef OPENOCD_TARGET_ARMV7M_TRACE_H
   8 #define OPENOCD_TARGET_ARMV7M_TRACE_H
   9
  10 #include <helper/command.h>
  11 #include <target/target.h>
  12
  13 /**
  14  * @file
  15  * Holds the interface to ITM and DWT configuration functions.
  16  */
  17
  18 enum itm_ts_prescaler {
  19         ITM_TS_PRESCALE1,       /**< no prescaling for the timestamp counter */
  20         ITM_TS_PRESCALE4,       /**< refclock divided by 4 for the timestamp counter */
  21         ITM_TS_PRESCALE16,      /**< refclock divided by 16 for the timestamp counter */
  22         ITM_TS_PRESCALE64,      /**< refclock divided by 64 for the timestamp counter */
  23 };
  24
  25 struct armv7m_trace_config {
  26         /** Bitmask of currently enabled ITM stimuli */
  27         uint32_t itm_ter[8];
  28         /** Identifier for multi-source trace stream formatting */
  29         unsigned int trace_bus_id;
  30         /** Prescaler for the timestamp counter */
  31         enum itm_ts_prescaler itm_ts_prescale;
  32         /** Enable differential timestamps */
  33         bool itm_diff_timestamps;
  34         /** Enable async timestamps model */
  35         bool itm_async_timestamps;
  36         /** Enable synchronisation packet transmission (for sync port only) */
  37         bool itm_synchro_packets;
  38         /** Config ITM after target examine */
  39         bool itm_deferred_config;
  40 };
  41
  42 extern const struct command_registration armv7m_trace_command_handlers[];
  43
  44 /**
  45  * Configure hardware accordingly to the current ITM target settings
  46  */
  47 int armv7m_trace_itm_config(struct target *target);
  48
  49 #endif /* OPENOCD_TARGET_ARMV7M_TRACE_H */