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 "telnet_server.h"
  42 #include "gdb_server.h"
  43 #include "tcl_server.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 static void exit_handler(void)
  65 {
  66         jtag_interface_quit();
  67 }
  68
  69 static int log_target_callback_event_handler(struct target *target, enum target_event event, void *priv)
  70 {
  71         switch (event)
  72         {
  73                 case TARGET_EVENT_GDB_START:
  74                         target->display = 0;
  75                         break;
  76                 case TARGET_EVENT_GDB_END:
  77                         target->display = 1;
  78                         break;
  79                 case TARGET_EVENT_HALTED:
  80                         if (target->display)
  81                         {
  82                                 /* do not display information when debugger caused the halt */
  83                                 target_arch_state(target);
  84                         }
  85                         break;
  86                 default:
  87                         break;
  88         }
  89
  90         return ERROR_OK;
  91 }
  92
  93 int ioutil_init(struct command_context *cmd_ctx);
  94
  95 /* OpenOCD can't really handle failure of this command. Patches welcome! :-) */
  96 COMMAND_HANDLER(handle_init_command)
  97 {
  98
  99         if (CMD_ARGC != 0)
 100                 return ERROR_COMMAND_SYNTAX_ERROR;
 101
 102         int retval;
 103         static int initialized = 0;
 104         if (initialized)
 105                 return ERROR_OK;
 106
 107         initialized = 1;
 108
 109         atexit(exit_handler);
 110
 111         if (target_init(CMD_CTX) != ERROR_OK)
 112                 return ERROR_FAIL;
 113         LOG_DEBUG("target init complete");
 114
 115         if ((retval = jtag_interface_init(CMD_CTX)) != ERROR_OK)
 116         {
 117                 /* we must be able to set up the jtag interface */
 118                 return retval;
 119         }
 120         LOG_DEBUG("jtag interface init complete");
 121
 122         /* Try to initialize & examine the JTAG chain at this point, but
 123          * continue startup regardless */
 124         if (jtag_init(CMD_CTX) == ERROR_OK)
 125         {
 126                 LOG_DEBUG("jtag init complete");
 127                 if (target_examine() == ERROR_OK)
 128                 {
 129                         LOG_DEBUG("jtag examine complete");
 130                 }
 131         }
 132
 133         if (flash_init_drivers(CMD_CTX) != ERROR_OK)
 134                 return ERROR_FAIL;
 135         LOG_DEBUG("flash init complete");
 136
 137         if (mflash_init_drivers(CMD_CTX) != ERROR_OK)
 138                 return ERROR_FAIL;
 139         LOG_DEBUG("mflash init complete");
 140
 141         if (nand_init(CMD_CTX) != ERROR_OK)
 142                 return ERROR_FAIL;
 143         LOG_DEBUG("NAND init complete");
 144
 145         if (pld_init(CMD_CTX) != ERROR_OK)
 146                 return ERROR_FAIL;
 147         LOG_DEBUG("pld init complete");
 148
 149         /* initialize tcp server */
 150         server_init();
 151
 152         /* initialize telnet subsystem */
 153         telnet_init("Open On-Chip Debugger");
 154         gdb_init();
 155         tcl_init(); /* allows tcl to just connect without going thru telnet */
 156
 157         target_register_event_callback(log_target_callback_event_handler, CMD_CTX);
 158
 159         return ERROR_OK;
 160 }
 161
 162 struct command_context *global_cmd_ctx;
 163
 164 /// src/hello.c gives a simple example for writing new command modules
 165 int hello_register_commands(struct command_context *cmd_ctx);
 166
 167 /* NB! this fn can be invoked outside this file for non PC hosted builds */
 168 struct command_context *setup_command_handler(void)
 169 {
 170         struct command_context *cmd_ctx;
 171
 172         global_cmd_ctx = cmd_ctx = command_init(openocd_startup_tcl);
 173
 174         register_command(cmd_ctx, NULL, "version", handle_version_command,
 175                                          COMMAND_EXEC, "show OpenOCD version");
 176
 177         /* register subsystem commands */
 178         hello_register_commands(cmd_ctx);
 179         server_register_commands(cmd_ctx);
 180         telnet_register_commands(cmd_ctx);
 181         gdb_register_commands(cmd_ctx);
 182         tcl_register_commands(cmd_ctx); /* tcl server commands */
 183         log_register_commands(cmd_ctx);
 184         jtag_register_commands(cmd_ctx);
 185         xsvf_register_commands(cmd_ctx);
 186         svf_register_commands(cmd_ctx);
 187         target_register_commands(cmd_ctx);
 188         flash_register_commands(cmd_ctx);
 189         nand_register_commands(cmd_ctx);
 190         pld_register_commands(cmd_ctx);
 191         mflash_register_commands(cmd_ctx);
 192
 193         if (log_init(cmd_ctx) != ERROR_OK)
 194         {
 195                 exit(-1);
 196         }
 197         LOG_DEBUG("log init complete");
 198
 199         LOG_OUTPUT(OPENOCD_VERSION "\n");
 200
 201         register_command(cmd_ctx, NULL, "init", handle_init_command,
 202                                          COMMAND_ANY, "initializes target and servers - nop on subsequent invocations");
 203
 204         return cmd_ctx;
 205 }
 206
 207 int httpd_start(void);
 208 void httpd_stop(void);
 209
 210
 211 #if !BUILD_HTTPD && !BUILD_ECOSBOARD
 212 /* implementations of OpenOCD that uses multithreading needs to know when
 213  * OpenOCD is sleeping. No-op in vanilla OpenOCD
 214  */
 215 void openocd_sleep_prelude(void)
 216 {
 217 }
 218
 219 void openocd_sleep_postlude(void)
 220 {
 221 }
 222 #endif
 223
 224
 225 /* normally this is the main() function entry, but if OpenOCD is linked
 226  * into application, then this fn will not be invoked, but rather that
 227  * application will have it's own implementation of main(). */
 228 int openocd_main(int argc, char *argv[])
 229 {
 230         int ret;
 231
 232         /* initialize commandline interface */
 233         struct command_context *cmd_ctx;
 234
 235         cmd_ctx = setup_command_handler();
 236
 237 #if BUILD_IOUTIL
 238         if (ioutil_init(cmd_ctx) != ERROR_OK)
 239         {
 240                 return EXIT_FAILURE;
 241         }
 242 #endif
 243
 244         LOG_OUTPUT("For bug reports, read\n\t"
 245                 "http://openocd.berlios.de/doc/doxygen/bugs.html"
 246                 "\n");
 247
 248
 249         command_context_mode(cmd_ctx, COMMAND_CONFIG);
 250         command_set_output_handler(cmd_ctx, configuration_output_handler, NULL);
 251
 252         if (parse_cmdline_args(cmd_ctx, argc, argv) != ERROR_OK)
 253                 return EXIT_FAILURE;
 254
 255         ret = parse_config_file(cmd_ctx);
 256         if ((ret != ERROR_OK) && (ret != ERROR_COMMAND_CLOSE_CONNECTION))
 257                 return EXIT_FAILURE;
 258
 259 #if BUILD_HTTPD
 260         if (httpd_start() != ERROR_OK)
 261                 return EXIT_FAILURE;
 262 #endif
 263
 264         if (ret != ERROR_COMMAND_CLOSE_CONNECTION)
 265         {
 266                 command_context_mode(cmd_ctx, COMMAND_EXEC);
 267                 if (command_run_line(cmd_ctx, "init") != ERROR_OK)
 268                         return EXIT_FAILURE;
 269
 270                 /* handle network connections */
 271                 server_loop(cmd_ctx);
 272         }
 273
 274         /* shut server down */
 275         server_quit();
 276
 277 #if BUILD_HTTPD
 278         httpd_stop();
 279 #endif
 280
 281         unregister_all_commands(cmd_ctx, NULL);
 282
 283         /* free commandline interface */
 284         command_done(cmd_ctx);
 285
 286
 287         return EXIT_SUCCESS;
 288 }