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 static void print_version(void)
  55 {
  56         /* DANGER!!! make sure that the line below does not appear in a patch, do not remove */
  57         /* DANGER!!! make sure that the line below does not appear in a patch, do not remove */
  58         /* DANGER!!! make sure that the line below does not appear in a patch, do not remove */
  59         /* DANGER!!! make sure that the line below does not appear in a patch, do not remove */
  60         /* DANGER!!! make sure that the line below does not appear in a patch, do not remove */
  61         LOG_OUTPUT("$URL$\n");
  62         /* DANGER!!! make sure that the line above does not appear in a patch, do not remove */
  63         /* DANGER!!! make sure that the line above does not appear in a patch, do not remove */
  64         /* DANGER!!! make sure that the line above does not appear in a patch, do not remove */
  65         /* DANGER!!! make sure that the line above does not appear in a patch, do not remove */
  66         /* DANGER!!! make sure that the line above does not appear in a patch, do not remove */
  67 }
  68
  69 /* Give TELNET a way to find out what version this is */
  70 static int handle_version_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
  71 {
  72         if (argc != 0)
  73                 return ERROR_COMMAND_SYNTAX_ERROR;
  74
  75         command_print(cmd_ctx, OPENOCD_VERSION);
  76
  77         return ERROR_OK;
  78 }
  79
  80 static void exit_handler(void)
  81 {
  82         jtag_interface_quit();
  83 }
  84
  85 static int log_target_callback_event_handler(struct target_s *target, enum target_event event, void *priv)
  86 {
  87         switch (event)
  88         {
  89                 case TARGET_EVENT_GDB_START:
  90                         target->display = 0;
  91                         break;
  92                 case TARGET_EVENT_GDB_END:
  93                         target->display = 1;
  94                         break;
  95                 case TARGET_EVENT_HALTED:
  96                         if (target->display)
  97                         {
  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 int ioutil_init(struct command_context_s *cmd_ctx);
 110
 111 /* OpenOCD can't really handle failure of this command. Patches welcome! :-) */
 112 static int handle_init_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 113 {
 114
 115         if (argc != 0)
 116                 return ERROR_COMMAND_SYNTAX_ERROR;
 117
 118         int retval;
 119         static int initialized = 0;
 120         if (initialized)
 121                 return ERROR_OK;
 122
 123         initialized = 1;
 124
 125         atexit(exit_handler);
 126
 127         if (target_init(cmd_ctx) != ERROR_OK)
 128                 return ERROR_FAIL;
 129         LOG_DEBUG("target init complete");
 130
 131         if ((retval = jtag_interface_init(cmd_ctx)) != ERROR_OK)
 132         {
 133                 /* we must be able to set up the jtag interface */
 134                 return retval;
 135         }
 136         LOG_DEBUG("jtag interface init complete");
 137
 138         /* Try to initialize & examine the JTAG chain at this point, but
 139          * continue startup regardless */
 140         if (jtag_init(cmd_ctx) == ERROR_OK)
 141         {
 142                 LOG_DEBUG("jtag init complete");
 143                 if (target_examine() == ERROR_OK)
 144                 {
 145                         LOG_DEBUG("jtag examine complete");
 146                 }
 147         }
 148
 149         if (flash_init_drivers(cmd_ctx) != ERROR_OK)
 150                 return ERROR_FAIL;
 151         LOG_DEBUG("flash init complete");
 152
 153         if (mflash_init_drivers(cmd_ctx) != ERROR_OK)
 154                 return ERROR_FAIL;
 155         LOG_DEBUG("mflash init complete");
 156
 157         if (nand_init(cmd_ctx) != ERROR_OK)
 158                 return ERROR_FAIL;
 159         LOG_DEBUG("NAND init complete");
 160
 161         if (pld_init(cmd_ctx) != ERROR_OK)
 162                 return ERROR_FAIL;
 163         LOG_DEBUG("pld init complete");
 164
 165         /* initialize tcp server */
 166         server_init();
 167
 168         /* initialize telnet subsystem */
 169         telnet_init("Open On-Chip Debugger");
 170         gdb_init();
 171         tcl_init(); /* allows tcl to just connect without going thru telnet */
 172
 173         target_register_event_callback(log_target_callback_event_handler, cmd_ctx);
 174
 175         return ERROR_OK;
 176 }
 177
 178 command_context_t *global_cmd_ctx;
 179
 180 /* NB! this fn can be invoked outside this file for non PC hosted builds */
 181 command_context_t *setup_command_handler(void)
 182 {
 183         command_context_t *cmd_ctx;
 184
 185         global_cmd_ctx = cmd_ctx = command_init();
 186
 187         register_command(cmd_ctx, NULL, "version", handle_version_command,
 188                                          COMMAND_EXEC, "show OpenOCD version");
 189
 190         /* register subsystem commands */
 191         server_register_commands(cmd_ctx);
 192         telnet_register_commands(cmd_ctx);
 193         gdb_register_commands(cmd_ctx);
 194         tcl_register_commands(cmd_ctx); /* tcl server commands */
 195         log_register_commands(cmd_ctx);
 196         jtag_register_commands(cmd_ctx);
 197         xsvf_register_commands(cmd_ctx);
 198         svf_register_commands(cmd_ctx);
 199         target_register_commands(cmd_ctx);
 200         flash_register_commands(cmd_ctx);
 201         nand_register_commands(cmd_ctx);
 202         pld_register_commands(cmd_ctx);
 203         mflash_register_commands(cmd_ctx);
 204
 205         if (log_init(cmd_ctx) != ERROR_OK)
 206         {
 207                 exit(-1);
 208         }
 209         LOG_DEBUG("log init complete");
 210
 211         LOG_OUTPUT(OPENOCD_VERSION "\n");
 212
 213         register_command(cmd_ctx, NULL, "init", handle_init_command,
 214                                          COMMAND_ANY, "initializes target and servers - nop on subsequent invocations");
 215
 216         return cmd_ctx;
 217 }
 218
 219 int httpd_start(void);
 220 void httpd_stop(void);
 221
 222
 223 #if !BUILD_HTTPD && !BUILD_ECOSBOARD
 224 /* implementations of OpenOCD that uses multithreading needs to know when
 225  * OpenOCD is sleeping. No-op in vanilla OpenOCD
 226  */
 227 void openocd_sleep_prelude(void)
 228 {
 229 }
 230
 231 void openocd_sleep_postlude(void)
 232 {
 233 }
 234 #endif
 235
 236
 237 /* normally this is the main() function entry, but if OpenOCD is linked
 238  * into application, then this fn will not be invoked, but rather that
 239  * application will have it's own implementation of main(). */
 240 int openocd_main(int argc, char *argv[])
 241 {
 242         int ret;
 243
 244         /* initialize commandline interface */
 245         command_context_t *cmd_ctx;
 246
 247         cmd_ctx = setup_command_handler();
 248
 249 #if BUILD_IOUTIL
 250         if (ioutil_init(cmd_ctx) != ERROR_OK)
 251         {
 252                 return EXIT_FAILURE;
 253         }
 254 #endif
 255
 256         print_version();
 257
 258         LOG_OUTPUT("For bug reports, read\n\t"
 259                 "http://openocd.berlios.de/doc/doxygen/bugs.html"
 260                 "\n");
 261
 262
 263         command_context_mode(cmd_ctx, COMMAND_CONFIG);
 264         command_set_output_handler(cmd_ctx, configuration_output_handler, NULL);
 265
 266         if (parse_cmdline_args(cmd_ctx, argc, argv) != ERROR_OK)
 267                 return EXIT_FAILURE;
 268
 269         ret = parse_config_file(cmd_ctx);
 270         if ((ret != ERROR_OK) && (ret != ERROR_COMMAND_CLOSE_CONNECTION))
 271                 return EXIT_FAILURE;
 272
 273 #if BUILD_HTTPD
 274         if (httpd_start() != ERROR_OK)
 275                 return EXIT_FAILURE;
 276 #endif
 277
 278         if (ret != ERROR_COMMAND_CLOSE_CONNECTION)
 279         {
 280                 command_context_mode(cmd_ctx, COMMAND_EXEC);
 281                 if (command_run_line(cmd_ctx, "init") != ERROR_OK)
 282                         return EXIT_FAILURE;
 283
 284                 /* handle network connections */
 285                 server_loop(cmd_ctx);
 286         }
 287
 288         /* shut server down */
 289         server_quit();
 290
 291 #if BUILD_HTTPD
 292         httpd_stop();
 293 #endif
 294
 295         unregister_all_commands(cmd_ctx);
 296
 297         /* free commandline interface */
 298         command_done(cmd_ctx);
 299
 300
 301         return EXIT_SUCCESS;
 302 }