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/jtag.h>
  33 #include <helper/ioutil.h>
  34 #include <helper/configuration.h>
  35 #include <xsvf/xsvf.h>
  36 #include <svf/svf.h>
  37 #include <flash/nand.h>
  38 #include <pld/pld.h>
  39 #include <flash/mflash.h>
  40
  41 #include <server/server.h>
  42 #include <server/gdb_server.h>
  43 #include <server/httpd.h>
  44
  45 #ifdef HAVE_STRINGS_H
  46 #include <strings.h>
  47 #endif
  48
  49
  50 #define OPENOCD_VERSION \
  51                 "Open On-Chip Debugger " VERSION RELSTR " (" PKGBLDDATE ")"
  52
  53 /* Give TELNET a way to find out what version this is */
  54 COMMAND_HANDLER(handle_version_command)
  55 {
  56         if (CMD_ARGC != 0)
  57                 return ERROR_COMMAND_SYNTAX_ERROR;
  58
  59         command_print(CMD_CTX, OPENOCD_VERSION);
  60
  61         return ERROR_OK;
  62 }
  63
  64
  65 static int log_target_callback_event_handler(struct target *target, enum target_event event, void *priv)
  66 {
  67         switch (event)
  68         {
  69                 case TARGET_EVENT_GDB_START:
  70                         target->display = 0;
  71                         break;
  72                 case TARGET_EVENT_GDB_END:
  73                         target->display = 1;
  74                         break;
  75                 case TARGET_EVENT_HALTED:
  76                         if (target->display)
  77                         {
  78                                 /* do not display information when debugger caused the halt */
  79                                 target_arch_state(target);
  80                         }
  81                         break;
  82                 default:
  83                         break;
  84         }
  85
  86         return ERROR_OK;
  87 }
  88
  89 static bool init_at_startup = true;
  90
  91 COMMAND_HANDLER(handle_noinit_command)
  92 {
  93         if (CMD_ARGC != 0)
  94                 return ERROR_COMMAND_SYNTAX_ERROR;
  95         init_at_startup = false;
  96         return ERROR_OK;
  97 }
  98
  99 /* OpenOCD can't really handle failure of this command. Patches welcome! :-) */
 100 COMMAND_HANDLER(handle_init_command)
 101 {
 102
 103         if (CMD_ARGC != 0)
 104                 return ERROR_COMMAND_SYNTAX_ERROR;
 105
 106         int retval;
 107         static int initialized = 0;
 108         if (initialized)
 109                 return ERROR_OK;
 110
 111         initialized = 1;
 112
 113         retval = command_run_line(CMD_CTX, "target init");
 114         if (ERROR_OK != retval)
 115                 return ERROR_FAIL;
 116
 117         if ((retval = jtag_interface_init(CMD_CTX)) != ERROR_OK)
 118         {
 119                 /* we must be able to set up the jtag interface */
 120                 return retval;
 121         }
 122         LOG_DEBUG("jtag interface init complete");
 123
 124         /* Try to initialize & examine the JTAG chain at this point,
 125          * but continue startup regardless.  Note that platforms
 126          * need to be able to provide JTAG event handlers that use
 127          * a variety of JTAG operations in order to do that...
 128          */
 129         command_context_mode(CMD_CTX, COMMAND_EXEC);
 130         if (command_run_line(CMD_CTX, "jtag init") == ERROR_OK)
 131         {
 132                 LOG_DEBUG("Examining targets...");
 133                 if (target_examine() != ERROR_OK)
 134                         LOG_DEBUG("target examination failed");
 135         }
 136         else
 137                 LOG_WARNING("jtag initialization failed; try 'jtag init' again.");
 138         command_context_mode(CMD_CTX, COMMAND_CONFIG);
 139
 140         if (command_run_line(CMD_CTX, "flash init") != ERROR_OK)
 141                 return ERROR_FAIL;
 142
 143         if (command_run_line(CMD_CTX, "mflash init") != ERROR_OK)
 144                 return ERROR_FAIL;
 145
 146         if (command_run_line(CMD_CTX, "nand init") != ERROR_OK)
 147                 return ERROR_FAIL;
 148
 149         if (command_run_line(CMD_CTX, "pld init") != ERROR_OK)
 150                 return ERROR_FAIL;
 151         command_context_mode(CMD_CTX, COMMAND_EXEC);
 152
 153         /* initialize telnet subsystem */
 154         gdb_target_add_all(all_targets);
 155
 156         target_register_event_callback(log_target_callback_event_handler, CMD_CTX);
 157
 158         return ERROR_OK;
 159 }
 160
 161 static const struct command_registration openocd_command_handlers[] = {
 162         {
 163                 .name = "version",
 164                 .handler = &handle_version_command,
 165                 .mode = COMMAND_ANY,
 166                 .help = "show program version",
 167         },
 168         {
 169                 .name = "noinit",
 170                 .handler = &handle_noinit_command,
 171                 .mode = COMMAND_CONFIG,
 172                 .help = "Prevent 'init' from being called at startup.",
 173         },
 174         {
 175                 .name = "init",
 176                 .handler = &handle_init_command,
 177                 .mode = COMMAND_ANY,
 178                 .help = "Initializes configured targets and servers.  "
 179                         "Changes command mode from CONFIG to EXEC.  "
 180                         "Unless 'noinit' is called, this command is "
 181                         "called automatically at the end of startup.",
 182
 183         },
 184         COMMAND_REGISTRATION_DONE
 185 };
 186
 187 int openocd_register_commands(struct command_context *cmd_ctx)
 188 {
 189         return register_commands(cmd_ctx, NULL, openocd_command_handlers);
 190 }
 191
 192 struct command_context *global_cmd_ctx;
 193
 194 /* NB! this fn can be invoked outside this file for non PC hosted builds */
 195 struct command_context *setup_command_handler(Jim_Interp *interp)
 196 {
 197         log_init();
 198         LOG_DEBUG("log_init: complete");
 199
 200         const char *startup = openocd_startup_tcl;
 201         struct command_context *cmd_ctx = command_init(startup, interp);
 202
 203         /* register subsystem commands */
 204         typedef int (*command_registrant_t)(struct command_context *cmd_ctx);
 205         command_registrant_t command_registrants[] = {
 206                 &openocd_register_commands,
 207                 &server_register_commands,
 208                 &gdb_register_commands,
 209                 &log_register_commands,
 210                 &jtag_register_commands,
 211                 &xsvf_register_commands,
 212                 &svf_register_commands,
 213                 &target_register_commands,
 214                 &flash_register_commands,
 215                 &nand_register_commands,
 216                 &pld_register_commands,
 217                 &mflash_register_commands,
 218                 NULL
 219         };
 220         for (unsigned i = 0; NULL != command_registrants[i]; i++)
 221         {
 222                 int retval = (*command_registrants[i])(cmd_ctx);
 223                 if (ERROR_OK != retval)
 224                 {
 225                         command_done(cmd_ctx);
 226                         return NULL;
 227                 }
 228         }
 229         LOG_DEBUG("command registration: complete");
 230
 231         LOG_OUTPUT(OPENOCD_VERSION "\n");
 232
 233         global_cmd_ctx = cmd_ctx;
 234
 235         return cmd_ctx;
 236 }
 237
 238 /* normally this is the main() function entry, but if OpenOCD is linked
 239  * into application, then this fn will not be invoked, but rather that
 240  * application will have it's own implementation of main(). */
 241 int openocd_main(int argc, char *argv[])
 242 {
 243         int ret;
 244
 245         /* initialize commandline interface */
 246         struct command_context *cmd_ctx;
 247
 248         cmd_ctx = setup_command_handler(NULL);
 249
 250         if (ioutil_init(cmd_ctx) != ERROR_OK)
 251                 return EXIT_FAILURE;
 252
 253         LOG_OUTPUT("For bug reports, read\n\t"
 254                 "http://openocd.berlios.de/doc/doxygen/bugs.html"
 255                 "\n");
 256
 257
 258         command_context_mode(cmd_ctx, COMMAND_CONFIG);
 259         command_set_output_handler(cmd_ctx, configuration_output_handler, NULL);
 260
 261         if (parse_cmdline_args(cmd_ctx, argc, argv) != ERROR_OK)
 262                 return EXIT_FAILURE;
 263
 264         ret = parse_config_file(cmd_ctx);
 265         if (ret != ERROR_OK)
 266                 return EXIT_FAILURE;
 267
 268         if (httpd_start(cmd_ctx) != ERROR_OK)
 269                 return EXIT_FAILURE;
 270
 271         ret = server_init(cmd_ctx);
 272         if (ERROR_OK != ret)
 273                 return EXIT_FAILURE;
 274
 275         if (init_at_startup)
 276         {
 277                 ret = command_run_line(cmd_ctx, "init");
 278                 if (ERROR_OK != ret)
 279                         ret = EXIT_FAILURE;
 280         }
 281
 282         /* handle network connections */
 283         if (ERROR_OK == ret)
 284                 server_loop(cmd_ctx);
 285
 286         server_quit();
 287
 288         httpd_stop();
 289
 290         unregister_all_commands(cmd_ctx, NULL);
 291
 292         /* free commandline interface */
 293         command_done(cmd_ctx);
 294
 295         jtag_interface_quit();
 296
 297         return ret;
 298 }