src/openocd.c

   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2007-2010 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, see <http://www.gnu.org/licenses/>. *
  23  ***************************************************************************/
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include "config.h"
  27 #endif
  28
  29 #include "openocd.h"
  30 #include <jtag/driver.h>
  31 #include <jtag/jtag.h>
  32 #include <transport/transport.h>
  33 #include <helper/ioutil.h>
  34 #include <helper/util.h>
  35 #include <helper/configuration.h>
  36 #include <flash/nor/core.h>
  37 #include <flash/nand/core.h>
  38 #include <pld/pld.h>
  39 #include <target/arm_cti.h>
  40 #include <target/arm_adi_v5.h>
  41 #include <rtt/rtt.h>
  42
  43 #include <server/server.h>
  44 #include <server/gdb_server.h>
  45 #include <server/rtt_server.h>
  46
  47 #ifdef HAVE_STRINGS_H
  48 #include <strings.h>
  49 #endif
  50
  51 #ifdef PKGBLDDATE
  52 #define OPENOCD_VERSION \
  53         "Open On-Chip Debugger " VERSION RELSTR " (" PKGBLDDATE ")"
  54 #else
  55 #define OPENOCD_VERSION \
  56         "Open On-Chip Debugger " VERSION RELSTR
  57 #endif
  58
  59 static const char openocd_startup_tcl[] = {
  60 #include "startup_tcl.inc"
  61 0 /* Terminate with zero */
  62 };
  63
  64 /* Give scripts and TELNET a way to find out what version this is */
  65 static int jim_version_command(Jim_Interp *interp, int argc,
  66         Jim_Obj * const *argv)
  67 {
  68         if (argc > 2)
  69                 return JIM_ERR;
  70         const char *str = "";
  71         char *version_str;
  72         version_str = OPENOCD_VERSION;
  73
  74         if (argc == 2)
  75                 str = Jim_GetString(argv[1], NULL);
  76
  77         if (strcmp("git", str) == 0)
  78                 version_str = GITVERSION;
  79
  80         Jim_SetResult(interp, Jim_NewStringObj(interp, version_str, -1));
  81
  82         return JIM_OK;
  83 }
  84
  85 static int log_target_callback_event_handler(struct target *target,
  86         enum target_event event,
  87         void *priv)
  88 {
  89         switch (event) {
  90                 case TARGET_EVENT_GDB_START:
  91                         target->verbose_halt_msg = false;
  92                         break;
  93                 case TARGET_EVENT_GDB_END:
  94                         target->verbose_halt_msg = true;
  95                         break;
  96                 case TARGET_EVENT_HALTED:
  97                         if (target->verbose_halt_msg) {
  98                                 /* do not display information when debugger caused the halt */
  99                                 target_arch_state(target);
 100                         }
 101                         break;
 102                 default:
 103                         break;
 104         }
 105
 106         return ERROR_OK;
 107 }
 108
 109 static bool init_at_startup = true;
 110
 111 COMMAND_HANDLER(handle_noinit_command)
 112 {
 113         if (CMD_ARGC != 0)
 114                 return ERROR_COMMAND_SYNTAX_ERROR;
 115         init_at_startup = false;
 116         return ERROR_OK;
 117 }
 118
 119 /* OpenOCD can't really handle failure of this command. Patches welcome! :-) */
 120 COMMAND_HANDLER(handle_init_command)
 121 {
 122
 123         if (CMD_ARGC != 0)
 124                 return ERROR_COMMAND_SYNTAX_ERROR;
 125
 126         int retval;
 127         static int initialized;
 128         if (initialized)
 129                 return ERROR_OK;
 130
 131         initialized = 1;
 132
 133         retval = command_run_line(CMD_CTX, "target init");
 134         if (ERROR_OK != retval)
 135                 return ERROR_FAIL;
 136
 137         retval = adapter_init(CMD_CTX);
 138         if (retval != ERROR_OK) {
 139                 /* we must be able to set up the debug adapter */
 140                 return retval;
 141         }
 142
 143         LOG_DEBUG("Debug Adapter init complete");
 144
 145         /* "transport init" verifies the expected devices are present;
 146          * for JTAG, it checks the list of configured TAPs against
 147          * what's discoverable, possibly with help from the platform's
 148          * JTAG event handlers.  (which require COMMAND_EXEC)
 149          */
 150         command_context_mode(CMD_CTX, COMMAND_EXEC);
 151
 152         retval = command_run_line(CMD_CTX, "transport init");
 153         if (ERROR_OK != retval)
 154                 return ERROR_FAIL;
 155
 156         retval = command_run_line(CMD_CTX, "dap init");
 157         if (ERROR_OK != retval)
 158                 return ERROR_FAIL;
 159
 160         LOG_DEBUG("Examining targets...");
 161         if (target_examine() != ERROR_OK)
 162                 LOG_DEBUG("target examination failed");
 163
 164         command_context_mode(CMD_CTX, COMMAND_CONFIG);
 165
 166         if (command_run_line(CMD_CTX, "flash init") != ERROR_OK)
 167                 return ERROR_FAIL;
 168
 169         if (command_run_line(CMD_CTX, "nand init") != ERROR_OK)
 170                 return ERROR_FAIL;
 171
 172         if (command_run_line(CMD_CTX, "pld init") != ERROR_OK)
 173                 return ERROR_FAIL;
 174         command_context_mode(CMD_CTX, COMMAND_EXEC);
 175
 176         /* initialize telnet subsystem */
 177         gdb_target_add_all(all_targets);
 178
 179         target_register_event_callback(log_target_callback_event_handler, CMD_CTX);
 180
 181         return ERROR_OK;
 182 }
 183
 184 COMMAND_HANDLER(handle_add_script_search_dir_command)
 185 {
 186         if (CMD_ARGC != 1)
 187                 return ERROR_COMMAND_SYNTAX_ERROR;
 188
 189         add_script_search_dir(CMD_ARGV[0]);
 190
 191         return ERROR_OK;
 192 }
 193
 194 static const struct command_registration openocd_command_handlers[] = {
 195         {
 196                 .name = "version",
 197                 .jim_handler = jim_version_command,
 198                 .mode = COMMAND_ANY,
 199                 .help = "show program version",
 200         },
 201         {
 202                 .name = "noinit",
 203                 .handler = &handle_noinit_command,
 204                 .mode = COMMAND_CONFIG,
 205                 .help = "Prevent 'init' from being called at startup.",
 206                 .usage = ""
 207         },
 208         {
 209                 .name = "init",
 210                 .handler = &handle_init_command,
 211                 .mode = COMMAND_ANY,
 212                 .help = "Initializes configured targets and servers.  "
 213                         "Changes command mode from CONFIG to EXEC.  "
 214                         "Unless 'noinit' is called, this command is "
 215                         "called automatically at the end of startup.",
 216                 .usage = ""
 217         },
 218         {
 219                 .name = "add_script_search_dir",
 220                 .handler = &handle_add_script_search_dir_command,
 221                 .mode = COMMAND_ANY,
 222                 .help = "dir to search for config files and scripts",
 223                 .usage = "<directory>"
 224         },
 225         COMMAND_REGISTRATION_DONE
 226 };
 227
 228 static int openocd_register_commands(struct command_context *cmd_ctx)
 229 {
 230         return register_commands(cmd_ctx, NULL, openocd_command_handlers);
 231 }
 232
 233 struct command_context *global_cmd_ctx;
 234
 235 static struct command_context *setup_command_handler(Jim_Interp *interp)
 236 {
 237         log_init();
 238         LOG_DEBUG("log_init: complete");
 239
 240         struct command_context *cmd_ctx = command_init(openocd_startup_tcl, interp);
 241
 242         /* register subsystem commands */
 243         typedef int (*command_registrant_t)(struct command_context *cmd_ctx_value);
 244         static const command_registrant_t command_registrants[] = {
 245                 &openocd_register_commands,
 246                 &server_register_commands,
 247                 &gdb_register_commands,
 248                 &log_register_commands,
 249                 &rtt_server_register_commands,
 250                 &transport_register_commands,
 251                 &interface_register_commands,
 252                 &target_register_commands,
 253                 &flash_register_commands,
 254                 &nand_register_commands,
 255                 &pld_register_commands,
 256                 &cti_register_commands,
 257                 &dap_register_commands,
 258                 NULL
 259         };
 260         for (unsigned i = 0; NULL != command_registrants[i]; i++) {
 261                 int retval = (*command_registrants[i])(cmd_ctx);
 262                 if (ERROR_OK != retval) {
 263                         command_done(cmd_ctx);
 264                         return NULL;
 265                 }
 266         }
 267         LOG_DEBUG("command registration: complete");
 268
 269         LOG_OUTPUT(OPENOCD_VERSION "\n"
 270                 "Licensed under GNU GPL v2\n");
 271
 272         global_cmd_ctx = cmd_ctx;
 273
 274         return cmd_ctx;
 275 }
 276
 277 /** OpenOCD runtime meat that can become single-thread in future. It parse
 278  * commandline, reads configuration, sets up the target and starts server loop.
 279  * Commandline arguments are passed into this function from openocd_main().
 280  */
 281 static int openocd_thread(int argc, char *argv[], struct command_context *cmd_ctx)
 282 {
 283         int ret;
 284
 285         if (parse_cmdline_args(cmd_ctx, argc, argv) != ERROR_OK)
 286                 return ERROR_FAIL;
 287
 288         if (server_preinit() != ERROR_OK)
 289                 return ERROR_FAIL;
 290
 291         ret = parse_config_file(cmd_ctx);
 292         if (ret == ERROR_COMMAND_CLOSE_CONNECTION) {
 293                 server_quit(); /* gdb server may be initialized by -c init */
 294                 return ERROR_OK;
 295         } else if (ret != ERROR_OK) {
 296                 server_quit(); /* gdb server may be initialized by -c init */
 297                 return ERROR_FAIL;
 298         }
 299
 300         ret = server_init(cmd_ctx);
 301         if (ERROR_OK != ret)
 302                 return ERROR_FAIL;
 303
 304         if (init_at_startup) {
 305                 ret = command_run_line(cmd_ctx, "init");
 306                 if (ERROR_OK != ret) {
 307                         server_quit();
 308                         return ERROR_FAIL;
 309                 }
 310         }
 311
 312         ret = server_loop(cmd_ctx);
 313
 314         int last_signal = server_quit();
 315         if (last_signal != ERROR_OK)
 316                 return last_signal;
 317
 318         if (ret != ERROR_OK)
 319                 return ERROR_FAIL;
 320         return ERROR_OK;
 321 }
 322
 323 /* normally this is the main() function entry, but if OpenOCD is linked
 324  * into application, then this fn will not be invoked, but rather that
 325  * application will have it's own implementation of main(). */
 326 int openocd_main(int argc, char *argv[])
 327 {
 328         int ret;
 329
 330         /* initialize commandline interface */
 331         struct command_context *cmd_ctx;
 332
 333         cmd_ctx = setup_command_handler(NULL);
 334
 335         if (util_init(cmd_ctx) != ERROR_OK)
 336                 return EXIT_FAILURE;
 337
 338         if (ioutil_init(cmd_ctx) != ERROR_OK)
 339                 return EXIT_FAILURE;
 340
 341         if (rtt_init() != ERROR_OK)
 342                 return EXIT_FAILURE;
 343
 344         LOG_OUTPUT("For bug reports, read\n\t"
 345                 "http://openocd.org/doc/doxygen/bugs.html"
 346                 "\n");
 347
 348         command_context_mode(cmd_ctx, COMMAND_CONFIG);
 349         command_set_output_handler(cmd_ctx, configuration_output_handler, NULL);
 350
 351         server_host_os_entry();
 352
 353         /* Start the executable meat that can evolve into thread in future. */
 354         ret = openocd_thread(argc, argv, cmd_ctx);
 355
 356         flash_free_all_banks();
 357         gdb_service_free();
 358         server_free();
 359
 360         unregister_all_commands(cmd_ctx, NULL);
 361
 362         /* free all DAP and CTI objects */
 363         dap_cleanup_all();
 364         arm_cti_cleanup_all();
 365
 366         adapter_quit();
 367
 368         server_host_os_close();
 369
 370         /* Shutdown commandline interface */
 371         command_exit(cmd_ctx);
 372
 373         rtt_exit();
 374         free_config();
 375
 376         if (ERROR_FAIL == ret)
 377                 return EXIT_FAILURE;
 378         else if (ERROR_OK != ret)
 379                 exit_on_signal(ret);
 380
 381         return ret;
 382 }