722f579706
If OpenOCD is reading trace data from the target, at exit it should stop the adapter to gather data, but should left the target still producing them. Add a helper in armv7m_trace to disable the adapter's trace and call it during OpenOCD teardown. This also provides a workaround for an issue in the firmware of ST-Link V3 till version V3J7. If the SWD connection is closed when trace is active, at following connection the trace does not work anymore. Change-Id: I47ccab61405384938555096c5aca789eaa090d27 Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com> Reviewed-on: http://openocd.zylin.com/5978 Reviewed-by: Jonathan McDowell <noodles-openocd@earth.li> Tested-by: jenkins
108 lines
4.2 KiB
C
108 lines
4.2 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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* You should have received a copy of the GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>. *
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***************************************************************************/
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#ifndef OPENOCD_TARGET_ARMV7M_TRACE_H
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#define OPENOCD_TARGET_ARMV7M_TRACE_H
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#include <server/server.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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TRACE_CONFIG_TYPE_DISABLED, /**< tracing is disabled */
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TRACE_CONFIG_TYPE_EXTERNAL, /**< trace output is captured externally */
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TRACE_CONFIG_TYPE_INTERNAL /**< trace output is handled by OpenOCD adapter driver */
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};
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enum trace_internal_channel {
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TRACE_INTERNAL_CHANNEL_TCL_ONLY, /** trace data is sent only to 'tcl_trace' */
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TRACE_INTERNAL_CHANNEL_FILE, /** trace data is appended to a file */
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TRACE_INTERNAL_CHANNEL_TCP /** trace data is appended to a TCP/IP port*/
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};
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enum tpiu_pin_protocol {
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TPIU_PIN_PROTOCOL_SYNC, /**< synchronous trace output */
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TPIU_PIN_PROTOCOL_ASYNC_MANCHESTER, /**< asynchronous output with Manchester coding */
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TPIU_PIN_PROTOCOL_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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/** The used channel when internal mode is selected */
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enum trace_internal_channel internal_channel;
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/** Currently active trace output mode */
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enum tpiu_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 currently 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 via file */
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FILE *trace_file;
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/** Handle to output trace data in INTERNAL capture mode via tcp */
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struct service *trace_service;
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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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* Disable TPIU data gathering at exit
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*/
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int armv7m_trace_tpiu_exit(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 /* OPENOCD_TARGET_ARMV7M_TRACE_H */
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