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 "log.h"
  32 #include "types.h"
  33 #include "jtag.h"
  34 #include "configuration.h"
  35 #include "xsvf.h"
  36 #include "svf.h"
  37 #include "target.h"
  38 #include "flash.h"
  39 #include "nand.h"
  40 #include "pld.h"
  41 #include "mflash.h"
  42
  43 #include "command.h"
  44 #include "server.h"
  45 #include "telnet_server.h"
  46 #include "gdb_server.h"
  47 #include "tcl_server.h"
  48
  49 #include <sys/time.h>
  50 #include <sys/types.h>
  51 #include <strings.h>
  52 #include <stdio.h>
  53 #include <stdlib.h>
  54 #include <string.h>
  55 #include <unistd.h>
  56 #include <errno.h>
  57
  58
  59 #define OPENOCD_VERSION \
  60                 "Open On-Chip Debugger " VERSION " (" PKGBLDDATE ") " RELSTR PKGBLDREV
  61
  62 static void print_version(void)
  63 {
  64         /* DANGER!!! make sure that the line below does not appear in a patch, do not remove */
  65         /* DANGER!!! make sure that the line below does not appear in a patch, do not remove */
  66         /* DANGER!!! make sure that the line below does not appear in a patch, do not remove */
  67         /* DANGER!!! make sure that the line below does not appear in a patch, do not remove */
  68         /* DANGER!!! make sure that the line below does not appear in a patch, do not remove */
  69         LOG_OUTPUT("$URL$\n");
  70         /* DANGER!!! make sure that the line above does not appear in a patch, do not remove */
  71         /* DANGER!!! make sure that the line above does not appear in a patch, do not remove */
  72         /* DANGER!!! make sure that the line above does not appear in a patch, do not remove */
  73         /* DANGER!!! make sure that the line above does not appear in a patch, do not remove */
  74         /* DANGER!!! make sure that the line above does not appear in a patch, do not remove */
  75 }
  76
  77 /* Give TELNET a way to find out what version this is */
  78 static int handle_version_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
  79 {
  80         if (argc!=0)
  81                 return ERROR_COMMAND_SYNTAX_ERROR;
  82
  83         command_print(cmd_ctx, OPENOCD_VERSION);
  84
  85         return ERROR_OK;
  86 }
  87
  88 static void exit_handler(void)
  89 {
  90         /* close JTAG interface */
  91         if (jtag && jtag->quit)
  92                 jtag->quit();
  93 }
  94
  95 static int log_target_callback_event_handler(struct target_s *target, enum target_event event, void *priv)
  96 {
  97         switch (event)
  98         {
  99                 case TARGET_EVENT_GDB_START:
 100                         target->display=0;
 101                         break;
 102                 case TARGET_EVENT_GDB_END:
 103                         target->display=1;
 104                         break;
 105                 case TARGET_EVENT_HALTED:
 106                         if (target->display)
 107                         {
 108                                 /* do not display information when debugger caused the halt */
 109                                 target_arch_state(target);
 110                         }
 111                         break;
 112                 default:
 113                         break;
 114         }
 115
 116         return ERROR_OK;
 117 }
 118
 119 int ioutil_init(struct command_context_s *cmd_ctx);
 120
 121 /* OpenOCD can't really handle failure of this command. Patches welcome! :-) */
 122 static int handle_init_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 123 {
 124
 125         if (argc!=0)
 126                 return ERROR_COMMAND_SYNTAX_ERROR;
 127
 128         int retval;
 129         static int initialized=0;
 130         if (initialized)
 131                 return ERROR_OK;
 132
 133         initialized=1;
 134
 135         atexit(exit_handler);
 136
 137         if (target_init(cmd_ctx) != ERROR_OK)
 138                 return ERROR_FAIL;
 139         LOG_DEBUG("target init complete");
 140
 141         if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
 142         {
 143                 /* we must be able to set up the jtag interface */
 144                 return retval;
 145         }
 146         LOG_DEBUG("jtag interface init complete");
 147
 148         /* Try to initialize & examine the JTAG chain at this point, but
 149          * continue startup regardless */
 150         if (jtag_init(cmd_ctx) == ERROR_OK)
 151         {
 152                 LOG_DEBUG("jtag init complete");
 153                 if (target_examine() == ERROR_OK)
 154                 {
 155                         LOG_DEBUG("jtag examine complete");
 156                 }
 157         }
 158
 159         if (flash_init_drivers(cmd_ctx) != ERROR_OK)
 160                 return ERROR_FAIL;
 161         LOG_DEBUG("flash init complete");
 162
 163         if (mflash_init_drivers(cmd_ctx) != ERROR_OK)
 164                 return ERROR_FAIL;
 165         LOG_DEBUG("mflash init complete");
 166
 167         if (nand_init(cmd_ctx) != ERROR_OK)
 168                 return ERROR_FAIL;
 169         LOG_DEBUG("NAND init complete");
 170
 171         if (pld_init(cmd_ctx) != ERROR_OK)
 172                 return ERROR_FAIL;
 173         LOG_DEBUG("pld init complete");
 174
 175         /* initialize tcp server */
 176         server_init();
 177
 178         /* initialize telnet subsystem */
 179         telnet_init("Open On-Chip Debugger");
 180         gdb_init();
 181         tcl_init(); /* allows tcl to just connect without going thru telnet */
 182
 183         target_register_event_callback(log_target_callback_event_handler, cmd_ctx);
 184
 185         return ERROR_OK;
 186 }
 187
 188 command_context_t *global_cmd_ctx;
 189
 190 static command_context_t *setup_command_handler(void)
 191 {
 192         command_context_t *cmd_ctx;
 193
 194         global_cmd_ctx = cmd_ctx = command_init();
 195
 196         register_command(cmd_ctx, NULL, "version", handle_version_command,
 197                                          COMMAND_EXEC, "show OpenOCD version");
 198
 199         /* register subsystem commands */
 200         server_register_commands(cmd_ctx);
 201         telnet_register_commands(cmd_ctx);
 202         gdb_register_commands(cmd_ctx);
 203         tcl_register_commands(cmd_ctx); /* tcl server commands */
 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         if (log_init(cmd_ctx) != ERROR_OK)
 215         {
 216                 exit(-1);
 217         }
 218         LOG_DEBUG("log init complete");
 219
 220         LOG_OUTPUT( OPENOCD_VERSION "\n" );
 221
 222         register_command(cmd_ctx, NULL, "init", handle_init_command,
 223                                          COMMAND_ANY, "initializes target and servers - nop on subsequent invocations");
 224
 225         return cmd_ctx;
 226 }
 227
 228 int httpd_start(void);
 229 void httpd_stop(void);
 230
 231
 232 #if !BUILD_HTTPD
 233 /* implementations of OpenOCD that uses multithreading needs to know when
 234  * OpenOCD is sleeping. No-op in vanilla OpenOCD
 235  */
 236 void openocd_sleep_prelude(void)
 237 {
 238 }
 239
 240 void openocd_sleep_postlude(void)
 241 {
 242 }
 243 #endif
 244
 245
 246 /* normally this is the main() function entry, but if OpenOCD is linked
 247  * into application, then this fn will not be invoked, but rather that
 248  * application will have it's own implementation of main(). */
 249 int openocd_main(int argc, char *argv[])
 250 {
 251         int ret;
 252
 253         /* initialize commandline interface */
 254         command_context_t *cmd_ctx;
 255
 256         cmd_ctx = setup_command_handler();
 257
 258 #if BUILD_IOUTIL
 259         if (ioutil_init(cmd_ctx) != ERROR_OK)
 260         {
 261                 return EXIT_FAILURE;
 262         }
 263 #endif
 264
 265         LOG_OUTPUT("\n\nBUGS? Read http://svn.berlios.de/svnroot/repos/openocd/trunk/BUGS\n\n\n");
 266
 267         print_version();
 268
 269         command_context_mode(cmd_ctx, COMMAND_CONFIG);
 270         command_set_output_handler(cmd_ctx, configuration_output_handler, NULL);
 271
 272         if (parse_cmdline_args(cmd_ctx, argc, argv) != ERROR_OK)
 273                 return EXIT_FAILURE;
 274
 275         ret = parse_config_file(cmd_ctx);
 276         if ( (ret != ERROR_OK) && (ret != ERROR_COMMAND_CLOSE_CONNECTION) )
 277                 return EXIT_FAILURE;
 278
 279 #if BUILD_HTTPD
 280         if (httpd_start()!=ERROR_OK)
 281                 return EXIT_FAILURE;
 282 #endif
 283
 284         if (ret != ERROR_COMMAND_CLOSE_CONNECTION)
 285         {
 286                 command_context_mode(cmd_ctx, COMMAND_EXEC);
 287                 if (command_run_line(cmd_ctx, "init")!=ERROR_OK)
 288                         return EXIT_FAILURE;
 289
 290                 /* handle network connections */
 291                 server_loop(cmd_ctx);
 292         }
 293
 294         /* shut server down */
 295         server_quit();
 296
 297 #if BUILD_HTTPD
 298         httpd_stop();
 299 #endif
 300
 301         unregister_all_commands(cmd_ctx);
 302
 303         /* free commandline interface */
 304         command_done(cmd_ctx);
 305
 306
 307         return EXIT_SUCCESS;
 308 }