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/driver.h>
  33 #include <jtag/jtag.h>
  34 #include <jtag/transport.h>
  35 #include <helper/ioutil.h>
  36 #include <helper/util.h>
  37 #include <helper/configuration.h>
  38 #include <flash/nor/core.h>
  39 #include <flash/nand/core.h>
  40 #include <pld/pld.h>
  41 #include <flash/mflash.h>
  42
  43 #include <server/server.h>
  44 #include <server/gdb_server.h>
  45 #include <server/httpd.h>
  46
  47 #ifdef HAVE_STRINGS_H
  48 #include <strings.h>
  49 #endif
  50
  51
  52 #define OPENOCD_VERSION \
  53                 "Open On-Chip Debugger " VERSION RELSTR " (" PKGBLDDATE ")"
  54
  55 /* Give TELNET a way to find out what version this is */
  56 COMMAND_HANDLER(handle_version_command)
  57 {
  58         if (CMD_ARGC != 0)
  59                 return ERROR_COMMAND_SYNTAX_ERROR;
  60
  61         command_print(CMD_CTX, OPENOCD_VERSION);
  62
  63         return ERROR_OK;
  64 }
  65
  66 static int log_target_callback_event_handler(struct target *target, enum target_event event, void *priv)
  67 {
  68         switch (event)
  69         {
  70                 case TARGET_EVENT_GDB_START:
  71                         target->display = 0;
  72                         break;
  73                 case TARGET_EVENT_GDB_END:
  74                         target->display = 1;
  75                         break;
  76                 case TARGET_EVENT_HALTED:
  77                         if (target->display)
  78                         {
  79                                 /* do not display information when debugger caused the halt */
  80                                 target_arch_state(target);
  81                         }
  82                         break;
  83                 default:
  84                         break;
  85         }
  86
  87         return ERROR_OK;
  88 }
  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         retval = command_run_line(CMD_CTX, "target init");
 115         if (ERROR_OK != retval)
 116                 return ERROR_FAIL;
 117
 118         if ((retval = adapter_init(CMD_CTX)) != ERROR_OK)
 119         {
 120                 /* we must be able to set up the debug adapter */
 121                 return retval;
 122         }
 123
 124         LOG_DEBUG("Debug Adapter init complete");
 125
 126         /* "transport init" verifies the expected devices are present;
 127          * for JTAG, it checks the list of configured TAPs against
 128          * what's discoverable, possibly with help from the platform's
 129          * JTAG event handlers.  (which require COMMAND_EXEC)
 130          */
 131         command_context_mode(CMD_CTX, COMMAND_EXEC);
 132
 133         retval = command_run_line(CMD_CTX, "transport init");
 134         if (ERROR_OK != retval)
 135                 return ERROR_FAIL;
 136
 137         LOG_DEBUG("Examining targets...");
 138         if (target_examine() != ERROR_OK)
 139                 LOG_DEBUG("target examination failed");
 140
 141         command_context_mode(CMD_CTX, COMMAND_CONFIG);
 142
 143         if (command_run_line(CMD_CTX, "flash init") != ERROR_OK)
 144                 return ERROR_FAIL;
 145
 146         if (command_run_line(CMD_CTX, "mflash init") != ERROR_OK)
 147                 return ERROR_FAIL;
 148
 149         if (command_run_line(CMD_CTX, "nand init") != ERROR_OK)
 150                 return ERROR_FAIL;
 151
 152         if (command_run_line(CMD_CTX, "pld init") != ERROR_OK)
 153                 return ERROR_FAIL;
 154         command_context_mode(CMD_CTX, COMMAND_EXEC);
 155
 156         /* initialize telnet subsystem */
 157         gdb_target_add_all(all_targets);
 158
 159         target_register_event_callback(log_target_callback_event_handler, CMD_CTX);
 160
 161         return ERROR_OK;
 162 }
 163
 164 COMMAND_HANDLER(handle_add_script_search_dir_command)
 165 {
 166         if (CMD_ARGC != 1)
 167                 return ERROR_COMMAND_SYNTAX_ERROR;
 168
 169         add_script_search_dir(CMD_ARGV[0]);
 170
 171         return ERROR_OK;
 172 }
 173
 174 static const struct command_registration openocd_command_handlers[] = {
 175         {
 176                 .name = "version",
 177                 .handler = &handle_version_command,
 178                 .mode = COMMAND_ANY,
 179                 .help = "show program version",
 180         },
 181         {
 182                 .name = "noinit",
 183                 .handler = &handle_noinit_command,
 184                 .mode = COMMAND_CONFIG,
 185                 .help = "Prevent 'init' from being called at startup.",
 186         },
 187         {
 188                 .name = "init",
 189                 .handler = &handle_init_command,
 190                 .mode = COMMAND_ANY,
 191                 .help = "Initializes configured targets and servers.  "
 192                         "Changes command mode from CONFIG to EXEC.  "
 193                         "Unless 'noinit' is called, this command is "
 194                         "called automatically at the end of startup.",
 195
 196         },
 197         {
 198                 .name = "add_script_search_dir",
 199                 .handler = &handle_add_script_search_dir_command,
 200                 .mode = COMMAND_ANY,
 201                 .help = "dir to search for config files and scripts",
 202
 203         },
 204         COMMAND_REGISTRATION_DONE
 205 };
 206
 207 static int openocd_register_commands(struct command_context *cmd_ctx)
 208 {
 209         return register_commands(cmd_ctx, NULL, openocd_command_handlers);
 210 }
 211
 212 struct command_context *global_cmd_ctx;
 213
 214 /* NB! this fn can be invoked outside this file for non PC hosted builds
 215  * NB! do not change to 'static'!!!!
 216  */
 217 struct command_context *setup_command_handler(Jim_Interp *interp)
 218 {
 219         log_init();
 220         LOG_DEBUG("log_init: complete");
 221
 222         const char *startup = openocd_startup_tcl;
 223         struct command_context *cmd_ctx = command_init(startup, interp);
 224
 225         /* register subsystem commands */
 226         typedef int (*command_registrant_t)(struct command_context *cmd_ctx);
 227         static const command_registrant_t command_registrants[] = {
 228                 &openocd_register_commands,
 229                 &server_register_commands,
 230                 &gdb_register_commands,
 231                 &log_register_commands,
 232                 &transport_register_commands,
 233                 &interface_register_commands,
 234                 &target_register_commands,
 235                 &flash_register_commands,
 236                 &nand_register_commands,
 237                 &pld_register_commands,
 238                 &mflash_register_commands,
 239                 NULL
 240         };
 241         for (unsigned i = 0; NULL != command_registrants[i]; i++)
 242         {
 243                 int retval = (*command_registrants[i])(cmd_ctx);
 244                 if (ERROR_OK != retval)
 245                 {
 246                         command_done(cmd_ctx);
 247                         return NULL;
 248                 }
 249         }
 250         LOG_DEBUG("command registration: complete");
 251
 252         LOG_OUTPUT(OPENOCD_VERSION "\n"
 253                         "Licensed under GNU GPL v2\n");
 254
 255         global_cmd_ctx = cmd_ctx;
 256
 257         return cmd_ctx;
 258 }
 259
 260 /* normally this is the main() function entry, but if OpenOCD is linked
 261  * into application, then this fn will not be invoked, but rather that
 262  * application will have it's own implementation of main(). */
 263 int openocd_main(int argc, char *argv[])
 264 {
 265         int ret;
 266
 267         /* initialize commandline interface */
 268         struct command_context *cmd_ctx;
 269
 270         cmd_ctx = setup_command_handler(NULL);
 271
 272         if (util_init(cmd_ctx) != ERROR_OK)
 273                 return EXIT_FAILURE;
 274
 275         if (ioutil_init(cmd_ctx) != ERROR_OK)
 276                 return EXIT_FAILURE;
 277
 278         LOG_OUTPUT("For bug reports, read\n\t"
 279                 "http://openocd.berlios.de/doc/doxygen/bugs.html"
 280                 "\n");
 281
 282         command_context_mode(cmd_ctx, COMMAND_CONFIG);
 283         command_set_output_handler(cmd_ctx, configuration_output_handler, NULL);
 284
 285         if (parse_cmdline_args(cmd_ctx, argc, argv) != ERROR_OK)
 286                 return EXIT_FAILURE;
 287
 288         if (server_preinit() != ERROR_OK)
 289                 return EXIT_FAILURE;
 290
 291         ret = parse_config_file(cmd_ctx);
 292         if (ret != ERROR_OK)
 293                 return EXIT_FAILURE;
 294
 295         if (httpd_start(cmd_ctx) != ERROR_OK)
 296                 return EXIT_FAILURE;
 297
 298         ret = server_init(cmd_ctx);
 299         if (ERROR_OK != ret)
 300                 return EXIT_FAILURE;
 301
 302         if (init_at_startup)
 303         {
 304                 ret = command_run_line(cmd_ctx, "init");
 305                 if (ERROR_OK != ret)
 306                         ret = EXIT_FAILURE;
 307         }
 308
 309         /* handle network connections */
 310         if (ERROR_OK == ret)
 311                 server_loop(cmd_ctx);
 312
 313         server_quit();
 314
 315         httpd_stop();
 316
 317         unregister_all_commands(cmd_ctx, NULL);
 318
 319         /* free commandline interface */
 320         command_done(cmd_ctx);
 321
 322         adapter_quit();
 323
 324         return ret;
 325 }