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 "openocd.h"
  32 #include "jtag.h"
  33 #include "configuration.h"
  34 #include "xsvf.h"
  35 #include "svf.h"
  36 #include "nand.h"
  37 #include "pld.h"
  38 #include "mflash.h"
  39
  40 #include "server.h"
  41 #include "gdb_server.h"
  42 #include "httpd.h"
  43
  44 #ifdef HAVE_STRINGS_H
  45 #include <strings.h>
  46 #endif
  47
  48
  49 #define OPENOCD_VERSION \
  50                 "Open On-Chip Debugger " VERSION RELSTR " (" PKGBLDDATE ")"
  51
  52 /* Give TELNET a way to find out what version this is */
  53 COMMAND_HANDLER(handle_version_command)
  54 {
  55         if (CMD_ARGC != 0)
  56                 return ERROR_COMMAND_SYNTAX_ERROR;
  57
  58         command_print(CMD_CTX, OPENOCD_VERSION);
  59
  60         return ERROR_OK;
  61 }
  62
  63
  64 static int log_target_callback_event_handler(struct target *target, enum target_event event, void *priv)
  65 {
  66         switch (event)
  67         {
  68                 case TARGET_EVENT_GDB_START:
  69                         target->display = 0;
  70                         break;
  71                 case TARGET_EVENT_GDB_END:
  72                         target->display = 1;
  73                         break;
  74                 case TARGET_EVENT_HALTED:
  75                         if (target->display)
  76                         {
  77                                 /* do not display information when debugger caused the halt */
  78                                 target_arch_state(target);
  79                         }
  80                         break;
  81                 default:
  82                         break;
  83         }
  84
  85         return ERROR_OK;
  86 }
  87
  88 int ioutil_init(struct command_context *cmd_ctx);
  89
  90 static bool init_at_startup = true;
  91
  92 COMMAND_HANDLER(handle_noinit_command)
  93 {
  94         if (CMD_ARGC != 0)
  95                 return ERROR_COMMAND_SYNTAX_ERROR;
  96         init_at_startup = false;
  97         return ERROR_OK;
  98 }
  99
 100 /* OpenOCD can't really handle failure of this command. Patches welcome! :-) */
 101 COMMAND_HANDLER(handle_init_command)
 102 {
 103
 104         if (CMD_ARGC != 0)
 105                 return ERROR_COMMAND_SYNTAX_ERROR;
 106
 107         int retval;
 108         static int initialized = 0;
 109         if (initialized)
 110                 return ERROR_OK;
 111
 112         initialized = 1;
 113
 114         command_context_mode(CMD_CTX, COMMAND_EXEC);
 115
 116         if (target_init(CMD_CTX) != ERROR_OK)
 117                 return ERROR_FAIL;
 118         LOG_DEBUG("target init complete");
 119
 120         if ((retval = jtag_interface_init(CMD_CTX)) != ERROR_OK)
 121         {
 122                 /* we must be able to set up the jtag interface */
 123                 return retval;
 124         }
 125         LOG_DEBUG("jtag interface init complete");
 126
 127         /* Try to initialize & examine the JTAG chain at this point, but
 128          * continue startup regardless */
 129         if (jtag_init(CMD_CTX) == ERROR_OK)
 130         {
 131                 LOG_DEBUG("jtag init complete");
 132                 if (target_examine() == ERROR_OK)
 133                 {
 134                         LOG_DEBUG("jtag examine complete");
 135                 }
 136         }
 137
 138         if (flash_init_drivers(CMD_CTX) != ERROR_OK)
 139                 return ERROR_FAIL;
 140         LOG_DEBUG("flash init complete");
 141
 142         if (mflash_init_drivers(CMD_CTX) != ERROR_OK)
 143                 return ERROR_FAIL;
 144         LOG_DEBUG("mflash init complete");
 145
 146         if (nand_init(CMD_CTX) != ERROR_OK)
 147                 return ERROR_FAIL;
 148         LOG_DEBUG("NAND init complete");
 149
 150         if (pld_init(CMD_CTX) != ERROR_OK)
 151                 return ERROR_FAIL;
 152         LOG_DEBUG("pld init complete");
 153
 154         /* initialize telnet subsystem */
 155         gdb_target_add_all(all_targets);
 156
 157         target_register_event_callback(log_target_callback_event_handler, CMD_CTX);
 158
 159         return ERROR_OK;
 160 }
 161
 162 static const struct command_registration openocd_command_handlers[] = {
 163         {
 164                 .name = "version",
 165                 .handler = &handle_version_command,
 166                 .mode = COMMAND_ANY,
 167                 .help = "show program version",
 168         },
 169         {
 170                 .name = "noinit",
 171                 .handler = &handle_noinit_command,
 172                 .mode = COMMAND_CONFIG,
 173                 .help = "Prevent 'init' from being called at startup.",
 174         },
 175         {
 176                 .name = "init",
 177                 .handler = &handle_init_command,
 178                 .mode = COMMAND_CONFIG,
 179                 .help = "Initializes configured targets and servers.  "
 180                         "Changes command mode from CONFIG to EXEC.  "
 181                         "Unless 'noinit' is called, this command is "
 182                         "called automatically at the end of startup.",
 183
 184         },
 185         COMMAND_REGISTRATION_DONE
 186 };
 187
 188 struct command_context *global_cmd_ctx;
 189
 190 /* NB! this fn can be invoked outside this file for non PC hosted builds */
 191 struct command_context *setup_command_handler(void)
 192 {
 193         log_init();
 194         LOG_DEBUG("log_init: complete");
 195
 196         struct command_context *cmd_ctx;
 197
 198         global_cmd_ctx = cmd_ctx = command_init(openocd_startup_tcl);
 199
 200         register_commands(cmd_ctx, NULL, openocd_command_handlers);
 201         /* register subsystem commands */
 202         server_register_commands(cmd_ctx);
 203         gdb_register_commands(cmd_ctx);
 204         log_register_commands(cmd_ctx);
 205         jtag_register_commands(cmd_ctx);
 206         xsvf_register_commands(cmd_ctx);
 207         svf_register_commands(cmd_ctx);
 208         target_register_commands(cmd_ctx);
 209         flash_register_commands(cmd_ctx);
 210         nand_register_commands(cmd_ctx);
 211         pld_register_commands(cmd_ctx);
 212         mflash_register_commands(cmd_ctx);
 213
 214         LOG_DEBUG("command registration: complete");
 215
 216         LOG_OUTPUT(OPENOCD_VERSION "\n");
 217
 218         return cmd_ctx;
 219 }
 220
 221 #if !BUILD_HTTPD && !BUILD_ECOSBOARD
 222 /* implementations of OpenOCD that uses multithreading needs to know when
 223  * OpenOCD is sleeping. No-op in vanilla OpenOCD
 224  */
 225 void openocd_sleep_prelude(void)
 226 {
 227 }
 228
 229 void openocd_sleep_postlude(void)
 230 {
 231 }
 232 #endif
 233
 234
 235 /* normally this is the main() function entry, but if OpenOCD is linked
 236  * into application, then this fn will not be invoked, but rather that
 237  * application will have it's own implementation of main(). */
 238 int openocd_main(int argc, char *argv[])
 239 {
 240         int ret;
 241
 242         /* initialize commandline interface */
 243         struct command_context *cmd_ctx;
 244
 245         cmd_ctx = setup_command_handler();
 246
 247 #if BUILD_IOUTIL
 248         if (ioutil_init(cmd_ctx) != ERROR_OK)
 249         {
 250                 return EXIT_FAILURE;
 251         }
 252 #endif
 253
 254         LOG_OUTPUT("For bug reports, read\n\t"
 255                 "http://openocd.berlios.de/doc/doxygen/bugs.html"
 256                 "\n");
 257
 258
 259         command_context_mode(cmd_ctx, COMMAND_CONFIG);
 260         command_set_output_handler(cmd_ctx, configuration_output_handler, NULL);
 261
 262         if (parse_cmdline_args(cmd_ctx, argc, argv) != ERROR_OK)
 263                 return EXIT_FAILURE;
 264
 265         ret = parse_config_file(cmd_ctx);
 266         if (ret != ERROR_OK)
 267                 return EXIT_FAILURE;
 268
 269 #if BUILD_HTTPD
 270         if (httpd_start(cmd_ctx) != ERROR_OK)
 271                 return EXIT_FAILURE;
 272 #endif
 273
 274         ret = server_init(cmd_ctx);
 275         if (ERROR_OK != ret)
 276                 return EXIT_FAILURE;
 277
 278         if (init_at_startup)
 279         {
 280                 ret = command_run_line(cmd_ctx, "init");
 281                 if (ERROR_OK != ret)
 282                         ret = EXIT_FAILURE;
 283         }
 284
 285         /* handle network connections */
 286         if (ERROR_OK == ret)
 287                 server_loop(cmd_ctx);
 288
 289         server_quit();
 290
 291 #if BUILD_HTTPD
 292         httpd_stop();
 293 #endif
 294
 295         unregister_all_commands(cmd_ctx, NULL);
 296
 297         /* free commandline interface */
 298         command_done(cmd_ctx);
 299
 300         jtag_interface_quit();
 301
 302         return ret;
 303 }