89 lines
3.2 KiB
C
89 lines
3.2 KiB
C
/***************************************************************************
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* Copyright (C) 2015 Paul Fertser <fercerpav@gmail.com> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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***************************************************************************/
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#ifndef ARMV7M_TRACE_H
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#define ARMV7M_TRACE_H
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#include <target/target.h>
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#include <command.h>
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/**
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* @file
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* Holds the interface to TPIU, ITM and DWT configuration functions.
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*/
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enum trace_config_type {
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DISABLED, /**< tracing is disabled */
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EXTERNAL, /**< trace output is captured externally */
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INTERNAL /**< trace output is handled by OpenOCD adapter driver */
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};
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enum tpio_pin_protocol {
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SYNC, /**< synchronous trace output */
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ASYNC_MANCHESTER, /**< asynchronous output with Manchester coding */
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ASYNC_UART /**< asynchronous output with NRZ coding */
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};
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enum itm_ts_prescaler {
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ITM_TS_PRESCALE1, /**< no prescaling for the timestamp counter */
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ITM_TS_PRESCALE4, /**< refclock divided by 4 for the timestamp counter */
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ITM_TS_PRESCALE16, /**< refclock divided by 16 for the timestamp counter */
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ITM_TS_PRESCALE64, /**< refclock divided by 64 for the timestamp counter */
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};
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struct armv7m_trace_config {
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/** Currently active trace capture mode */
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enum trace_config_type config_type;
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/** Currently active trace output mode */
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enum tpio_pin_protocol pin_protocol;
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/** TPIU formatter enable/disable (in async mode) */
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bool formatter;
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/** Synchronous output port width */
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uint32_t port_size;
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/** Bitmask of currenty enabled ITM stimuli */
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uint32_t itm_ter[8];
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/** Identifier for multi-source trace stream formatting */
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unsigned int trace_bus_id;
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/** Prescaler for the timestamp counter */
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enum itm_ts_prescaler itm_ts_prescale;
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/** Enable differential timestamps */
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bool itm_diff_timestamps;
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/** Enable async timestamps model */
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bool itm_async_timestamps;
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/** Enable synchronisation packet transmission (for sync port only) */
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bool itm_synchro_packets;
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/** Current frequency of TRACECLKIN (usually matches HCLK) */
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unsigned int traceclkin_freq;
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/** Current frequency of trace port */
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unsigned int trace_freq;
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/** Handle to output trace data in INTERNAL capture mode */
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FILE *trace_file;
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};
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extern const struct command_registration armv7m_trace_command_handlers[];
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/**
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* Configure hardware accordingly to the current TPIU target settings
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*/
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int armv7m_trace_tpiu_config(struct target *target);
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/**
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* Configure hardware accordingly to the current ITM target settings
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*/
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int armv7m_trace_itm_config(struct target *target);
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#endif
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