src/flash/flash.c

   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include "flash.h"
  25 #include "command.h"
  26 #include "log.h"
  27 #include "target.h"
  28
  29 #include <string.h>
  30 #include <unistd.h>
  31 #include <stdlib.h>
  32 #include <sys/types.h>
  33 #include <sys/stat.h>
  34 #include <errno.h>
  35
  36 /* command handlers */
  37 int handle_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  38 int handle_flash_banks_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  39 int handle_flash_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  40 int handle_flash_probe_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  41 int handle_flash_erase_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  42 int handle_flash_protect_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  43 int handle_flash_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  44 int handle_flash_write_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  45 int handle_flash_protect_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  46
  47 /* flash drivers
  48  */
  49 extern flash_driver_t lpc2000_flash;
  50 extern flash_driver_t cfi_flash;
  51 extern flash_driver_t at91sam7_flash;
  52 extern flash_driver_t str7x_flash;
  53
  54 flash_driver_t *flash_drivers[] =
  55 {
  56         &lpc2000_flash,
  57         &cfi_flash,
  58         &at91sam7_flash,
  59         &str7x_flash,
  60         NULL,
  61 };
  62
  63 flash_bank_t *flash_banks;
  64 static  command_t *flash_cmd;
  65
  66 int flash_register_commands(struct command_context_s *cmd_ctx)
  67 {
  68         flash_cmd = register_command(cmd_ctx, NULL, "flash", NULL, COMMAND_ANY, NULL);
  69
  70         register_command(cmd_ctx, flash_cmd, "bank", handle_flash_bank_command, COMMAND_CONFIG, NULL);
  71
  72         return ERROR_OK;
  73 }
  74
  75 int flash_init(struct command_context_s *cmd_ctx)
  76 {
  77         if (flash_banks)
  78         {
  79                 register_command(cmd_ctx, flash_cmd, "banks", handle_flash_banks_command, COMMAND_EXEC,
  80                                                  "list configured flash banks ");
  81                 register_command(cmd_ctx, flash_cmd, "info", handle_flash_info_command, COMMAND_EXEC,
  82                                                  "print info about flash bank <num>");
  83                 register_command(cmd_ctx, flash_cmd, "probe", handle_flash_probe_command, COMMAND_EXEC,
  84                                                  "identify flash bank <num>");
  85                 register_command(cmd_ctx, flash_cmd, "erase_check", handle_flash_erase_check_command, COMMAND_EXEC,
  86                                                  "check erase state of sectors in flash bank <num>");
  87                 register_command(cmd_ctx, flash_cmd, "protect_check", handle_flash_protect_check_command, COMMAND_EXEC,
  88                                                  "check protection state of sectors in flash bank <num>");
  89                 register_command(cmd_ctx, flash_cmd, "erase", handle_flash_erase_command, COMMAND_EXEC,
  90                                                  "erase sectors at <bank> <first> <last>");
  91                 register_command(cmd_ctx, flash_cmd, "write", handle_flash_write_command, COMMAND_EXEC,
  92                                                  "write binary <bank> <file> <offset>");
  93                 register_command(cmd_ctx, flash_cmd, "protect", handle_flash_protect_command, COMMAND_EXEC,
  94                                                  "set protection of sectors at <bank> <first> <last> <on|off>");
  95         }
  96
  97         return ERROR_OK;
  98 }
  99
 100 flash_bank_t *get_flash_bank_by_num(int num)
 101 {
 102         flash_bank_t *p;
 103         int i = 0;
 104
 105         for (p = flash_banks; p; p = p->next)
 106         {
 107                 if (i++ == num)
 108                 {
 109                         return p;
 110                 }
 111         }
 112
 113         return NULL;
 114 }
 115
 116 /* flash_bank <driver> <base> <size> <chip_width> <bus_width> [driver_options ...]
 117  */
 118 int handle_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 119 {
 120         int i;
 121         int found = 0;
 122
 123         if (argc < 5)
 124         {
 125                 WARNING("incomplete flash_bank configuration");
 126                 return ERROR_OK;
 127         }
 128
 129         for (i = 0; flash_drivers[i]; i++)
 130         {
 131                 if (strcmp(args[0], flash_drivers[i]->name) == 0)
 132                 {
 133                         flash_bank_t *p, *c;
 134
 135                         /* register flash specific commands */
 136                         if (flash_drivers[i]->register_commands(cmd_ctx) != ERROR_OK)
 137                         {
 138                                 ERROR("couldn't register '%s' commands", args[0]);
 139                                 exit(-1);
 140                         }
 141
 142                         c = malloc(sizeof(flash_bank_t));
 143                         c->driver = flash_drivers[i];
 144                         c->driver_priv = NULL;
 145                         c->base = strtoul(args[1], NULL, 0);
 146                         c->size = strtoul(args[2], NULL, 0);
 147                         c->chip_width = strtoul(args[3], NULL, 0);
 148                         c->bus_width = strtoul(args[4], NULL, 0);
 149                         c->next = NULL;
 150
 151                         if (flash_drivers[i]->flash_bank_command(cmd_ctx, cmd, args, argc, c) != ERROR_OK)
 152                         {
 153                                 ERROR("'%s' driver rejected flash bank at 0x%8.8x", args[0], c->base);
 154                                 free(c);
 155                                 return ERROR_OK;
 156                         }
 157
 158                         /* put flash bank in linked list */
 159                         if (flash_banks)
 160                         {
 161                                 /* find last flash bank */
 162                                 for (p = flash_banks; p && p->next; p = p->next);
 163                                 if (p)
 164                                         p->next = c;
 165                         }
 166                         else
 167                         {
 168                                 flash_banks = c;
 169                         }
 170
 171                         found = 1;
 172                 }
 173         }
 174
 175         /* no matching flash driver found */
 176         if (!found)
 177         {
 178                 ERROR("flash driver '%s' not found", args[0]);
 179                 exit(-1);
 180         }
 181
 182         return ERROR_OK;
 183 }
 184
 185 int handle_flash_banks_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 186 {
 187         flash_bank_t *p;
 188         int i = 0;
 189
 190         if (!flash_banks)
 191         {
 192                 command_print(cmd_ctx, "no flash banks configured");
 193                 return ERROR_OK;
 194         }
 195
 196         for (p = flash_banks; p; p = p->next)
 197         {
 198                 command_print(cmd_ctx, "#%i: %s at 0x%8.8x, size 0x%8.8x, buswidth %i, chipwidth %i",
 199                                           i++, p->driver->name, p->base, p->size, p->bus_width, p->chip_width);
 200         }
 201
 202         return ERROR_OK;
 203 }
 204
 205 int handle_flash_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 206 {
 207         flash_bank_t *p;
 208         int i = 0;
 209         int j = 0;
 210
 211         if (argc != 1)
 212         {
 213                 command_print(cmd_ctx, "usage: flash info <num>");
 214                 return ERROR_OK;
 215         }
 216
 217         for (p = flash_banks; p; p = p->next)
 218         {
 219                 if (i++ == strtoul(args[0], NULL, 0))
 220                 {
 221                         char buf[1024];
 222
 223                         command_print(cmd_ctx, "#%i: %s at 0x%8.8x, size 0x%8.8x, buswidth %i, chipwidth %i",
 224                                                 i, p->driver->name, p->base, p->size, p->bus_width, p->chip_width);
 225                         for (j = 0; j < p->num_sectors; j++)
 226                         {
 227                                 char *erase_state, *protect_state;
 228
 229                                 if (p->sectors[j].is_erased == 0)
 230                                         erase_state = "not erased";
 231                                 else if (p->sectors[j].is_erased == 1)
 232                                         erase_state = "erased";
 233                                 else
 234                                         erase_state = "erase state unknown";
 235
 236                                 if (p->sectors[j].is_protected == 0)
 237                                         protect_state = "not protected";
 238                                 else if (p->sectors[j].is_protected == 1)
 239                                         protect_state = "protected";
 240                                 else
 241                                         protect_state = "protection state unknown";
 242
 243                                 command_print(cmd_ctx, "\t#%i: 0x%8.8x (0x%xkB) %s, %s",
 244                                                         j, p->sectors[j].offset, p->sectors[j].size,
 245                                                         erase_state, protect_state);
 246                         }
 247
 248                         p->driver->info(p, buf, 1024);
 249                         command_print(cmd_ctx, "%s", buf);
 250                 }
 251         }
 252
 253         return ERROR_OK;
 254 }
 255
 256 int handle_flash_probe_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 257 {
 258         flash_bank_t *p;
 259         int retval;
 260
 261         if (argc != 1)
 262         {
 263                 command_print(cmd_ctx, "usage: flash probe <num>");
 264                 return ERROR_OK;
 265         }
 266
 267         p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
 268         if (p)
 269         {
 270                 if ((retval = p->driver->probe(p)) == ERROR_OK)
 271                 {
 272                         command_print(cmd_ctx, "flash '%s' found at 0x%8.8x", p->driver->name, p->base);
 273                 }
 274                 else if (retval == ERROR_FLASH_BANK_INVALID)
 275                 {
 276                         command_print(cmd_ctx, "probing failed for flash bank '#%s' at 0x%8.8x",
 277                                                   args[0], p->base);
 278                 }
 279                 else
 280                 {
 281                         command_print(cmd_ctx, "unknown error when probing flash bank '#%s' at 0x%8.8x",
 282                                                   args[0], p->base);
 283                 }
 284         }
 285         else
 286         {
 287                 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
 288         }
 289
 290         return ERROR_OK;
 291 }
 292
 293 int handle_flash_erase_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 294 {
 295         flash_bank_t *p;
 296         int retval;
 297
 298         if (argc != 1)
 299         {
 300                 command_print(cmd_ctx, "usage: flash erase_check <num>");
 301                 return ERROR_OK;
 302         }
 303
 304         p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
 305         if (p)
 306         {
 307                 if ((retval = p->driver->erase_check(p)) == ERROR_OK)
 308                 {
 309                         command_print(cmd_ctx, "successfully checked erase state", p->driver->name, p->base);
 310                 }
 311                 else
 312                 {
 313                         command_print(cmd_ctx, "unknown error when checking erase state of flash bank #%s at 0x%8.8x",
 314                                 args[0], p->base);
 315                 }
 316         }
 317         else
 318         {
 319                 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
 320         }
 321
 322         return ERROR_OK;
 323 }
 324
 325 int handle_flash_protect_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 326 {
 327         flash_bank_t *p;
 328         int retval;
 329
 330         if (argc != 1)
 331         {
 332                 command_print(cmd_ctx, "usage: flash protect_check <num>");
 333                 return ERROR_OK;
 334         }
 335
 336         p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
 337         if (p)
 338         {
 339                 if ((retval = p->driver->protect_check(p)) == ERROR_OK)
 340                 {
 341                         command_print(cmd_ctx, "successfully checked protect state");
 342                 }
 343                 else if (retval == ERROR_FLASH_OPERATION_FAILED)
 344                 {
 345                         command_print(cmd_ctx, "checking protection state failed (possibly unsupported) by flash #%s at 0x%8.8x", args[0], p->base);
 346                 }
 347                 else
 348                 {
 349                         command_print(cmd_ctx, "unknown error when checking protection state of flash bank '#%s' at 0x%8.8x", args[0], p->base);
 350                 }
 351         }
 352         else
 353         {
 354                 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
 355         }
 356
 357         return ERROR_OK;
 358 }
 359
 360 int handle_flash_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 361 {
 362         if (argc > 2)
 363         {
 364                 int first = strtoul(args[1], NULL, 0);
 365                 int last = strtoul(args[2], NULL, 0);
 366                 int retval;
 367                 flash_bank_t *p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
 368                 if (!p)
 369                 {
 370                         command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
 371                         return ERROR_OK;
 372                 }
 373
 374                 if ((retval = p->driver->erase(p, first, last)) != ERROR_OK)
 375                 {
 376                         switch (retval)
 377                         {
 378                                 case ERROR_TARGET_NOT_HALTED:
 379                                         command_print(cmd_ctx, "can't work with this flash while target is running");
 380                                         break;
 381                                 case ERROR_INVALID_ARGUMENTS:
 382                                         command_print(cmd_ctx, "usage: flash_erase <bank> <first> <last>");
 383                                         break;
 384                                 case ERROR_FLASH_BANK_INVALID:
 385                                         command_print(cmd_ctx, "no '%s' flash found at 0x%8.8x", p->driver->name, p->base);
 386                                         break;
 387                                 case ERROR_FLASH_OPERATION_FAILED:
 388                                         command_print(cmd_ctx, "flash erase error");
 389                                         break;
 390                                 case ERROR_FLASH_SECTOR_INVALID:
 391                                         command_print(cmd_ctx, "sector number(s) invalid");
 392                                         break;
 393                                 case ERROR_OK:
 394                                         command_print(cmd_ctx, "erased flash sectors %i to %i", first, last);
 395                                         break;
 396                                 default:
 397                                         command_print(cmd_ctx, "unknown error");
 398                         }
 399                 }
 400         }
 401         else
 402         {
 403                 command_print(cmd_ctx, "usage: flash erase <bank> <first> <last>");
 404         }
 405
 406         return ERROR_OK;
 407 }
 408
 409 int handle_flash_protect_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 410 {
 411         if (argc > 3)
 412         {
 413                 int first = strtoul(args[1], NULL, 0);
 414                 int last = strtoul(args[2], NULL, 0);
 415                 int set;
 416                 int retval;
 417                 flash_bank_t *p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
 418                 if (!p)
 419                 {
 420                         command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
 421                         return ERROR_OK;
 422                 }
 423
 424                 if (strcmp(args[3], "on") == 0)
 425                         set = 1;
 426                 else if (strcmp(args[3], "off") == 0)
 427                         set = 0;
 428                 else
 429                 {
 430                         command_print(cmd_ctx, "usage: flash protect <bank> <first> <last> <on|off>");
 431                         return ERROR_OK;
 432                 }
 433
 434                 if ((retval = p->driver->protect(p, set, first, last)) != ERROR_OK)
 435                 {
 436                         switch (retval)
 437                         {
 438                                 case ERROR_TARGET_NOT_HALTED:
 439                                         command_print(cmd_ctx, "can't work with this flash while target is running");
 440                                         break;
 441                                 case ERROR_INVALID_ARGUMENTS:
 442                                         command_print(cmd_ctx, "usage: flash protect <bank> <first> <last> <on|off>");
 443                                         break;
 444                                 case ERROR_FLASH_BANK_INVALID:
 445                                         command_print(cmd_ctx, "no '%s' flash found at 0x%8.8x", p->driver->name, p->base);
 446                                         break;
 447                                 case ERROR_FLASH_OPERATION_FAILED:
 448                                         command_print(cmd_ctx, "flash program error");
 449                                         break;
 450                                 case ERROR_FLASH_SECTOR_INVALID:
 451                                         command_print(cmd_ctx, "sector number(s) invalid");
 452                                         break;
 453                                 case ERROR_OK:
 454                                         command_print(cmd_ctx, "protection of flash sectors %i to %i turned %s", first, last, args[3]);
 455                                         break;
 456                                 default:
 457                                         command_print(cmd_ctx, "unknown error");
 458                         }
 459                 }
 460         }
 461         else
 462         {
 463                 command_print(cmd_ctx, "usage: flash protect <bank> <first> <last> <on|off>");
 464         }
 465
 466         return ERROR_OK;
 467 }
 468
 469 int handle_flash_write_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 470 {
 471         FILE *binary;
 472         u32 offset;
 473         struct stat binary_stat;
 474         u32 binary_size;
 475         u8 *buffer;
 476         u32 buf_cnt;
 477         int retval;
 478         flash_bank_t *p;
 479
 480         if (argc < 3)
 481         {
 482                 command_print(cmd_ctx, "usage: flash write <bank> <file> <offset>");
 483                 return ERROR_OK;
 484         }
 485
 486         offset = strtoul(args[2], NULL, 0);
 487         p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
 488         if (!p)
 489         {
 490                 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
 491                 return ERROR_OK;
 492         }
 493
 494         if (stat(args[1], &binary_stat) == -1)
 495         {
 496                 ERROR("couldn't stat() %s: %s", args[1], strerror(errno));
 497                 return ERROR_OK;
 498         }
 499
 500         if (S_ISDIR(binary_stat.st_mode))
 501         {
 502                 ERROR("%s is a directory", args[1]);
 503                 command_print(cmd_ctx,"%s is a directory", args[1]);
 504                 return ERROR_OK;
 505         }
 506
 507         if (binary_stat.st_size == 0){
 508                 ERROR("Empty file %s", args[1]);
 509                 command_print(cmd_ctx,"Empty file %s", args[1]);
 510                 return ERROR_OK;
 511         }
 512
 513         if (!(binary = fopen(args[1], "rb")))
 514         {
 515                 ERROR("couldn't open %s: %s", args[1], strerror(errno));
 516                 command_print(cmd_ctx, "couldn't open %s", args[1]);
 517                 return ERROR_OK;
 518         }
 519
 520         binary_size = binary_stat.st_size;
 521         buffer = malloc(binary_size);
 522         buf_cnt = fread(buffer, 1, binary_size, binary);
 523
 524         if ((retval = p->driver->write(p, buffer, offset, buf_cnt)) != ERROR_OK)
 525         {
 526                 switch (retval)
 527                 {
 528                         case ERROR_TARGET_NOT_HALTED:
 529                                 command_print(cmd_ctx, "can't work with this flash while target is running");
 530                                 break;
 531                         case ERROR_INVALID_ARGUMENTS:
 532                                 command_print(cmd_ctx, "usage: flash write <bank> <file> <offset>");
 533                                 break;
 534                         case ERROR_FLASH_BANK_INVALID:
 535                                 command_print(cmd_ctx, "no '%s' flash found at 0x%8.8x", p->driver->name, p->base);
 536                                 break;
 537                         case ERROR_FLASH_OPERATION_FAILED:
 538                                 command_print(cmd_ctx, "flash program error");
 539                                 break;
 540                         case ERROR_FLASH_DST_BREAKS_ALIGNMENT:
 541                                 command_print(cmd_ctx, "offset breaks required alignment");
 542                                 break;
 543                         case ERROR_FLASH_DST_OUT_OF_BANK:
 544                                 command_print(cmd_ctx, "destination is out of flash bank (offset and/or file too large)");
 545                                 break;
 546                         case ERROR_FLASH_SECTOR_NOT_ERASED:
 547                                 command_print(cmd_ctx, "destination sector(s) not erased");
 548                                 break;
 549                         default:
 550                                 command_print(cmd_ctx, "unknown error");
 551                 }
 552         }
 553         free(buffer);
 554         fclose(binary);
 555
 556         command_print(cmd_ctx, "wrote file %s to flash bank %i at offset 0x%8.8x", args[1], strtoul(args[0], NULL, 0), strtoul(args[2], NULL, 0));
 557
 558         return ERROR_OK;
 559
 560 }