src/openocd.c

   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
   6  *   oyvind.harboe@zylin.com                                               *
   7  *                                                                         *
   8  *   Copyright (C) 2008 Richard Missenden                                  *
   9  *   richard.missenden@googlemail.com                                      *
  10  *                                                                         *
  11  *   This program is free software; you can redistribute it and/or modify  *
  12  *   it under the terms of the GNU General Public License as published by  *
  13  *   the Free Software Foundation; either version 2 of the License, or     *
  14  *   (at your option) any later version.                                   *
  15  *                                                                         *
  16  *   This program is distributed in the hope that it will be useful,       *
  17  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  18  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  19  *   GNU General Public License for more details.                          *
  20  *                                                                         *
  21  *   You should have received a copy of the GNU General Public License     *
  22  *   along with this program; if not, write to the                         *
  23  *   Free Software Foundation, Inc.,                                       *
  24  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  25  ***************************************************************************/
  26
  27 #ifdef HAVE_CONFIG_H
  28 #include "config.h"
  29 #endif
  30
  31 #include "jtag.h"
  32 #include "configuration.h"
  33 #include "xsvf.h"
  34 #include "svf.h"
  35 #include "target.h"
  36 #include "flash.h"
  37 #include "nand.h"
  38 #include "pld.h"
  39 #include "mflash.h"
  40
  41 #include "server.h"
  42 #include "telnet_server.h"
  43 #include "gdb_server.h"
  44 #include "tcl_server.h"
  45
  46 #ifdef HAVE_STRINGS_H
  47 #include <strings.h>
  48 #endif
  49
  50
  51 #define OPENOCD_VERSION \
  52                 "Open On-Chip Debugger " VERSION RELSTR " (" PKGBLDDATE ")"
  53
  54 /* Give TELNET a way to find out what version this is */
  55 COMMAND_HANDLER(handle_version_command)
  56 {
  57         if (argc != 0)
  58                 return ERROR_COMMAND_SYNTAX_ERROR;
  59
  60         command_print(cmd_ctx, OPENOCD_VERSION);
  61
  62         return ERROR_OK;
  63 }
  64
  65 static void exit_handler(void)
  66 {
  67         jtag_interface_quit();
  68 }
  69
  70 static int log_target_callback_event_handler(struct target *target, enum target_event event, void *priv)
  71 {
  72         switch (event)
  73         {
  74                 case TARGET_EVENT_GDB_START:
  75                         target->display = 0;
  76                         break;
  77                 case TARGET_EVENT_GDB_END:
  78                         target->display = 1;
  79                         break;
  80                 case TARGET_EVENT_HALTED:
  81                         if (target->display)
  82                         {
  83                                 /* do not display information when debugger caused the halt */
  84                                 target_arch_state(target);
  85                         }
  86                         break;
  87                 default:
  88                         break;
  89         }
  90
  91         return ERROR_OK;
  92 }
  93
  94 int ioutil_init(struct command_context *cmd_ctx);
  95
  96 /* OpenOCD can't really handle failure of this command. Patches welcome! :-) */
  97 COMMAND_HANDLER(handle_init_command)
  98 {
  99
 100         if (argc != 0)
 101                 return ERROR_COMMAND_SYNTAX_ERROR;
 102
 103         int retval;
 104         static int initialized = 0;
 105         if (initialized)
 106                 return ERROR_OK;
 107
 108         initialized = 1;
 109
 110         atexit(exit_handler);
 111
 112         if (target_init(cmd_ctx) != ERROR_OK)
 113                 return ERROR_FAIL;
 114         LOG_DEBUG("target init complete");
 115
 116         if ((retval = jtag_interface_init(cmd_ctx)) != ERROR_OK)
 117         {
 118                 /* we must be able to set up the jtag interface */
 119                 return retval;
 120         }
 121         LOG_DEBUG("jtag interface init complete");
 122
 123         /* Try to initialize & examine the JTAG chain at this point, but
 124          * continue startup regardless */
 125         if (jtag_init(cmd_ctx) == ERROR_OK)
 126         {
 127                 LOG_DEBUG("jtag init complete");
 128                 if (target_examine() == ERROR_OK)
 129                 {
 130                         LOG_DEBUG("jtag examine complete");
 131                 }
 132         }
 133
 134         if (flash_init_drivers(cmd_ctx) != ERROR_OK)
 135                 return ERROR_FAIL;
 136         LOG_DEBUG("flash init complete");
 137
 138         if (mflash_init_drivers(cmd_ctx) != ERROR_OK)
 139                 return ERROR_FAIL;
 140         LOG_DEBUG("mflash init complete");
 141
 142         if (nand_init(cmd_ctx) != ERROR_OK)
 143                 return ERROR_FAIL;
 144         LOG_DEBUG("NAND init complete");
 145
 146         if (pld_init(cmd_ctx) != ERROR_OK)
 147                 return ERROR_FAIL;
 148         LOG_DEBUG("pld init complete");
 149
 150         /* initialize tcp server */
 151         server_init();
 152
 153         /* initialize telnet subsystem */
 154         telnet_init("Open On-Chip Debugger");
 155         gdb_init();
 156         tcl_init(); /* allows tcl to just connect without going thru telnet */
 157
 158         target_register_event_callback(log_target_callback_event_handler, cmd_ctx);
 159
 160         return ERROR_OK;
 161 }
 162
 163 struct command_context *global_cmd_ctx;
 164
 165 /// src/hello.c gives a simple example for writing new command modules
 166 int hello_register_commands(struct command_context *cmd_ctx);
 167
 168 /* NB! this fn can be invoked outside this file for non PC hosted builds */
 169 struct command_context *setup_command_handler(void)
 170 {
 171         struct command_context *cmd_ctx;
 172
 173         global_cmd_ctx = cmd_ctx = command_init();
 174
 175         register_command(cmd_ctx, NULL, "version", handle_version_command,
 176                                          COMMAND_EXEC, "show OpenOCD version");
 177
 178         /* register subsystem commands */
 179         hello_register_commands(cmd_ctx);
 180         server_register_commands(cmd_ctx);
 181         telnet_register_commands(cmd_ctx);
 182         gdb_register_commands(cmd_ctx);
 183         tcl_register_commands(cmd_ctx); /* tcl server commands */
 184         log_register_commands(cmd_ctx);
 185         jtag_register_commands(cmd_ctx);
 186         xsvf_register_commands(cmd_ctx);
 187         svf_register_commands(cmd_ctx);
 188         target_register_commands(cmd_ctx);
 189         flash_register_commands(cmd_ctx);
 190         nand_register_commands(cmd_ctx);
 191         pld_register_commands(cmd_ctx);
 192         mflash_register_commands(cmd_ctx);
 193
 194         if (log_init(cmd_ctx) != ERROR_OK)
 195         {
 196                 exit(-1);
 197         }
 198         LOG_DEBUG("log init complete");
 199
 200         LOG_OUTPUT(OPENOCD_VERSION "\n");
 201
 202         register_command(cmd_ctx, NULL, "init", handle_init_command,
 203                                          COMMAND_ANY, "initializes target and servers - nop on subsequent invocations");
 204
 205         return cmd_ctx;
 206 }
 207
 208 int httpd_start(void);
 209 void httpd_stop(void);
 210
 211
 212 #if !BUILD_HTTPD && !BUILD_ECOSBOARD
 213 /* implementations of OpenOCD that uses multithreading needs to know when
 214  * OpenOCD is sleeping. No-op in vanilla OpenOCD
 215  */
 216 void openocd_sleep_prelude(void)
 217 {
 218 }
 219
 220 void openocd_sleep_postlude(void)
 221 {
 222 }
 223 #endif
 224
 225
 226 /* normally this is the main() function entry, but if OpenOCD is linked
 227  * into application, then this fn will not be invoked, but rather that
 228  * application will have it's own implementation of main(). */
 229 int openocd_main(int argc, char *argv[])
 230 {
 231         int ret;
 232
 233         /* initialize commandline interface */
 234         struct command_context *cmd_ctx;
 235
 236         cmd_ctx = setup_command_handler();
 237
 238 #if BUILD_IOUTIL
 239         if (ioutil_init(cmd_ctx) != ERROR_OK)
 240         {
 241                 return EXIT_FAILURE;
 242         }
 243 #endif
 244
 245         LOG_OUTPUT("For bug reports, read\n\t"
 246                 "http://openocd.berlios.de/doc/doxygen/bugs.html"
 247                 "\n");
 248
 249
 250         command_context_mode(cmd_ctx, COMMAND_CONFIG);
 251         command_set_output_handler(cmd_ctx, configuration_output_handler, NULL);
 252
 253         if (parse_cmdline_args(cmd_ctx, argc, argv) != ERROR_OK)
 254                 return EXIT_FAILURE;
 255
 256         ret = parse_config_file(cmd_ctx);
 257         if ((ret != ERROR_OK) && (ret != ERROR_COMMAND_CLOSE_CONNECTION))
 258                 return EXIT_FAILURE;
 259
 260 #if BUILD_HTTPD
 261         if (httpd_start() != ERROR_OK)
 262                 return EXIT_FAILURE;
 263 #endif
 264
 265         if (ret != ERROR_COMMAND_CLOSE_CONNECTION)
 266         {
 267                 command_context_mode(cmd_ctx, COMMAND_EXEC);
 268                 if (command_run_line(cmd_ctx, "init") != ERROR_OK)
 269                         return EXIT_FAILURE;
 270
 271                 /* handle network connections */
 272                 server_loop(cmd_ctx);
 273         }
 274
 275         /* shut server down */
 276         server_quit();
 277
 278 #if BUILD_HTTPD
 279         httpd_stop();
 280 #endif
 281
 282         unregister_all_commands(cmd_ctx);
 283
 284         /* free commandline interface */
 285         command_done(cmd_ctx);
 286
 287
 288         return EXIT_SUCCESS;
 289 }