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/***************************************************************************
* Copyright (C) 2015 Paul Fertser <fercerpav@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, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
#ifndef OPENOCD_TARGET_ARMV7M_TRACE_H
#define OPENOCD_TARGET_ARMV7M_TRACE_H
#include <server/server.h>
#include <target/target.h>
#include <command.h>
/**
* @file
* Holds the interface to TPIU, ITM and DWT configuration functions.
*/
enum trace_config_type {
TRACE_CONFIG_TYPE_DISABLED, /**< tracing is disabled */
TRACE_CONFIG_TYPE_EXTERNAL, /**< trace output is captured externally */
TRACE_CONFIG_TYPE_INTERNAL /**< trace output is handled by OpenOCD adapter driver */
};
enum trace_internal_channel {
TRACE_INTERNAL_CHANNEL_TCL_ONLY, /** trace data is sent only to 'tcl_trace' */
TRACE_INTERNAL_CHANNEL_FILE, /** trace data is appended to a file */
TRACE_INTERNAL_CHANNEL_TCP /** trace data is appended to a TCP/IP port*/
};
enum tpiu_pin_protocol {
TPIU_PIN_PROTOCOL_SYNC, /**< synchronous trace output */
TPIU_PIN_PROTOCOL_ASYNC_MANCHESTER, /**< asynchronous output with Manchester coding */
TPIU_PIN_PROTOCOL_ASYNC_UART /**< asynchronous output with NRZ coding */
};
enum itm_ts_prescaler {
ITM_TS_PRESCALE1, /**< no prescaling for the timestamp counter */
ITM_TS_PRESCALE4, /**< refclock divided by 4 for the timestamp counter */
ITM_TS_PRESCALE16, /**< refclock divided by 16 for the timestamp counter */
ITM_TS_PRESCALE64, /**< refclock divided by 64 for the timestamp counter */
};
struct armv7m_trace_config {
/** Currently active trace capture mode */
enum trace_config_type config_type;
/** The used channel when internal mode is selected */
enum trace_internal_channel internal_channel;
/** Currently active trace output mode */
enum tpiu_pin_protocol pin_protocol;
/** TPIU formatter enable/disable (in async mode) */
bool formatter;
/** Synchronous output port width */
uint32_t port_size;
/** Bitmask of currently enabled ITM stimuli */
uint32_t itm_ter[8];
/** Identifier for multi-source trace stream formatting */
unsigned int trace_bus_id;
/** Prescaler for the timestamp counter */
enum itm_ts_prescaler itm_ts_prescale;
/** Enable differential timestamps */
bool itm_diff_timestamps;
/** Enable async timestamps model */
bool itm_async_timestamps;
/** Enable synchronisation packet transmission (for sync port only) */
bool itm_synchro_packets;
/** Config ITM after target examine */
bool itm_deferred_config;
/** Current frequency of TRACECLKIN (usually matches HCLK) */
unsigned int traceclkin_freq;
/** Current frequency of trace port */
unsigned int trace_freq;
/** Handle to output trace data in INTERNAL capture mode via file */
FILE *trace_file;
/** Handle to output trace data in INTERNAL capture mode via tcp */
struct service *trace_service;
};
extern const struct command_registration armv7m_trace_command_handlers[];
/**
* Configure hardware accordingly to the current TPIU target settings
*/
int armv7m_trace_tpiu_config(struct target *target);
/**
* Disable TPIU data gathering at exit
*/
int armv7m_trace_tpiu_exit(struct target *target);
/**
* Configure hardware accordingly to the current ITM target settings
*/
int armv7m_trace_itm_config(struct target *target);
#endif /* OPENOCD_TARGET_ARMV7M_TRACE_H */
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