src/flash/lpc2000.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
  21 #ifdef HAVE_CONFIG_H
  22 #include "config.h"
  23 #endif
  24
  25 #include "lpc2000.h"
  26 #include "armv4_5.h"
  27 #include "binarybuffer.h"
  28
  29
  30 /* flash programming support for Philips LPC2xxx devices
  31  * currently supported devices:
  32  * variant 1 (lpc2000_v1):
  33  * - 2104|5|6
  34  * - 2114|9
  35  * - 2124|9
  36  * - 2194
  37  * - 2212|4
  38  * - 2292|4
  39  *
  40  * variant 2 (lpc2000_v2):
  41  * - 213x
  42  * - 214x
  43  * - 2101|2|3
  44  * - 2364|6|8
  45  * - 2378
  46  */
  47
  48 static int lpc2000_register_commands(struct command_context_s *cmd_ctx);
  49 static int lpc2000_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
  50 static int lpc2000_erase(struct flash_bank_s *bank, int first, int last);
  51 static int lpc2000_protect(struct flash_bank_s *bank, int set, int first, int last);
  52 static int lpc2000_write(struct flash_bank_s *bank, uint8_t *buffer, u32 offset, u32 count);
  53 static int lpc2000_probe(struct flash_bank_s *bank);
  54 static int lpc2000_erase_check(struct flash_bank_s *bank);
  55 static int lpc2000_protect_check(struct flash_bank_s *bank);
  56 static int lpc2000_info(struct flash_bank_s *bank, char *buf, int buf_size);
  57
  58 static int lpc2000_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  59
  60 flash_driver_t lpc2000_flash =
  61 {
  62         .name = "lpc2000",
  63         .register_commands = lpc2000_register_commands,
  64         .flash_bank_command = lpc2000_flash_bank_command,
  65         .erase = lpc2000_erase,
  66         .protect = lpc2000_protect,
  67         .write = lpc2000_write,
  68         .probe = lpc2000_probe,
  69         .auto_probe = lpc2000_probe,
  70         .erase_check = lpc2000_erase_check,
  71         .protect_check = lpc2000_protect_check,
  72         .info = lpc2000_info
  73 };
  74
  75 static int lpc2000_register_commands(struct command_context_s *cmd_ctx)
  76 {
  77         command_t *lpc2000_cmd = register_command(cmd_ctx, NULL, "lpc2000", NULL, COMMAND_ANY, NULL);
  78
  79         register_command(cmd_ctx, lpc2000_cmd, "part_id", lpc2000_handle_part_id_command, COMMAND_EXEC,
  80                                          "print part id of lpc2000 flash bank <num>");
  81
  82         return ERROR_OK;
  83 }
  84
  85 static int lpc2000_build_sector_list(struct flash_bank_s *bank)
  86 {
  87         lpc2000_flash_bank_t *lpc2000_info = bank->driver_priv;
  88
  89         /* default to a 4096 write buffer */
  90         lpc2000_info->cmd51_max_buffer = 4096;
  91
  92         if (lpc2000_info->variant == 1)
  93         {
  94                 int i = 0;
  95                 u32 offset = 0;
  96
  97                 /* variant 1 has different layout for 128kb and 256kb flashes */
  98                 if (bank->size == 128 * 1024)
  99                 {
 100                         bank->num_sectors = 16;
 101                         bank->sectors = malloc(sizeof(flash_sector_t) * 16);
 102                         for (i = 0; i < 16; i++)
 103                         {
 104                                 bank->sectors[i].offset = offset;
 105                                 bank->sectors[i].size = 8 * 1024;
 106                                 offset += bank->sectors[i].size;
 107                                 bank->sectors[i].is_erased = -1;
 108                                 bank->sectors[i].is_protected = 1;
 109                         }
 110                 }
 111                 else if (bank->size == 256 * 1024)
 112                 {
 113                         bank->num_sectors = 18;
 114                         bank->sectors = malloc(sizeof(flash_sector_t) * 18);
 115
 116                         for (i = 0; i < 8; i++)
 117                         {
 118                                 bank->sectors[i].offset = offset;
 119                                 bank->sectors[i].size = 8 * 1024;
 120                                 offset += bank->sectors[i].size;
 121                                 bank->sectors[i].is_erased = -1;
 122                                 bank->sectors[i].is_protected = 1;
 123                         }
 124                         for (i = 8; i < 10; i++)
 125                         {
 126                                 bank->sectors[i].offset = offset;
 127                                 bank->sectors[i].size = 64 * 1024;
 128                                 offset += bank->sectors[i].size;
 129                                 bank->sectors[i].is_erased = -1;
 130                                 bank->sectors[i].is_protected = 1;
 131                         }
 132                         for (i = 10; i < 18; i++)
 133                         {
 134                                 bank->sectors[i].offset = offset;
 135                                 bank->sectors[i].size = 8 * 1024;
 136                                 offset += bank->sectors[i].size;
 137                                 bank->sectors[i].is_erased = -1;
 138                                 bank->sectors[i].is_protected = 1;
 139                         }
 140                 }
 141                 else
 142                 {
 143                         LOG_ERROR("BUG: unknown bank->size encountered");
 144                         exit(-1);
 145                 }
 146         }
 147         else if (lpc2000_info->variant == 2)
 148         {
 149                 int num_sectors;
 150                 int i;
 151                 u32 offset = 0;
 152
 153                 /* variant 2 has a uniform layout, only number of sectors differs */
 154                 switch (bank->size)
 155                 {
 156                         case 4 * 1024:
 157                                 lpc2000_info->cmd51_max_buffer = 1024;
 158                                 num_sectors = 1;
 159                                 break;
 160                         case 8 * 1024:
 161                                 lpc2000_info->cmd51_max_buffer = 1024;
 162                                 num_sectors = 2;
 163                                 break;
 164                         case 16 * 1024:
 165                                 num_sectors = 4;
 166                                 break;
 167                         case 32 * 1024:
 168                                 num_sectors = 8;
 169                                 break;
 170                         case 64 * 1024:
 171                                 num_sectors = 9;
 172                                 break;
 173                         case 128 * 1024:
 174                                 num_sectors = 11;
 175                                 break;
 176                         case 256 * 1024:
 177                                 num_sectors = 15;
 178                                 break;
 179                         case 512 * 1024:
 180                         case 500 * 1024:
 181                                 num_sectors = 27;
 182                                 break;
 183                         default:
 184                                 LOG_ERROR("BUG: unknown bank->size encountered");
 185                                 exit(-1);
 186                                 break;
 187                 }
 188
 189                 bank->num_sectors = num_sectors;
 190                 bank->sectors = malloc(sizeof(flash_sector_t) * num_sectors);
 191
 192                 for (i = 0; i < num_sectors; i++)
 193                 {
 194                         if ((i >= 0) && (i < 8))
 195                         {
 196                                 bank->sectors[i].offset = offset;
 197                                 bank->sectors[i].size = 4 * 1024;
 198                                 offset += bank->sectors[i].size;
 199                                 bank->sectors[i].is_erased = -1;
 200                                 bank->sectors[i].is_protected = 1;
 201                         }
 202                         if ((i >= 8) && (i < 22))
 203                         {
 204                                 bank->sectors[i].offset = offset;
 205                                 bank->sectors[i].size = 32 * 1024;
 206                                 offset += bank->sectors[i].size;
 207                                 bank->sectors[i].is_erased = -1;
 208                                 bank->sectors[i].is_protected = 1;
 209                         }
 210                         if ((i >= 22) && (i < 27))
 211                         {
 212                                 bank->sectors[i].offset = offset;
 213                                 bank->sectors[i].size = 4 * 1024;
 214                                 offset += bank->sectors[i].size;
 215                                 bank->sectors[i].is_erased = -1;
 216                                 bank->sectors[i].is_protected = 1;
 217                         }
 218                 }
 219         }
 220         else
 221         {
 222                 LOG_ERROR("BUG: unknown lpc2000_info->variant encountered");
 223                 exit(-1);
 224         }
 225
 226         return ERROR_OK;
 227 }
 228
 229 /* call LPC2000 IAP function
 230  * uses 172 bytes working area
 231  * 0x0 to 0x7: jump gate (BX to thumb state, b -2 to wait)
 232  * 0x8 to 0x1f: command parameter table
 233  * 0x20 to 0x2b: command result table
 234  * 0x2c to 0xac: stack (only 128b needed)
 235  */
 236 static int lpc2000_iap_call(flash_bank_t *bank, int code, u32 param_table[5], u32 result_table[2])
 237 {
 238         int retval;
 239         lpc2000_flash_bank_t *lpc2000_info = bank->driver_priv;
 240         target_t *target = bank->target;
 241         mem_param_t mem_params[2];
 242         reg_param_t reg_params[5];
 243         armv4_5_algorithm_t armv4_5_info;
 244         u32 status_code;
 245
 246         /* regrab previously allocated working_area, or allocate a new one */
 247         if (!lpc2000_info->iap_working_area)
 248         {
 249                 uint8_t jump_gate[8];
 250
 251                 /* make sure we have a working area */
 252                 if (target_alloc_working_area(target, 172, &lpc2000_info->iap_working_area) != ERROR_OK)
 253                 {
 254                         LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
 255                         return ERROR_FLASH_OPERATION_FAILED;
 256                 }
 257
 258                 /* write IAP code to working area */
 259                 target_buffer_set_u32(target, jump_gate, ARMV4_5_BX(12));
 260                 target_buffer_set_u32(target, jump_gate + 4, ARMV4_5_B(0xfffffe, 0));
 261                 if((retval = target_write_memory(target, lpc2000_info->iap_working_area->address, 4, 2, jump_gate)) != ERROR_OK)
 262                 {
 263                         return retval;
 264                 }
 265         }
 266
 267         armv4_5_info.common_magic = ARMV4_5_COMMON_MAGIC;
 268         armv4_5_info.core_mode = ARMV4_5_MODE_SVC;
 269         armv4_5_info.core_state = ARMV4_5_STATE_ARM;
 270
 271         /* command parameter table */
 272         init_mem_param(&mem_params[0], lpc2000_info->iap_working_area->address + 8, 4 * 6, PARAM_OUT);
 273         target_buffer_set_u32(target, mem_params[0].value, code);
 274         target_buffer_set_u32(target, mem_params[0].value + 0x4, param_table[0]);
 275         target_buffer_set_u32(target, mem_params[0].value + 0x8, param_table[1]);
 276         target_buffer_set_u32(target, mem_params[0].value + 0xc, param_table[2]);
 277         target_buffer_set_u32(target, mem_params[0].value + 0x10, param_table[3]);
 278         target_buffer_set_u32(target, mem_params[0].value + 0x14, param_table[4]);
 279
 280         init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
 281         buf_set_u32(reg_params[0].value, 0, 32, lpc2000_info->iap_working_area->address + 0x8);
 282
 283         /* command result table */
 284         init_mem_param(&mem_params[1], lpc2000_info->iap_working_area->address + 0x20, 4 * 3, PARAM_IN);
 285
 286         init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
 287         buf_set_u32(reg_params[1].value, 0, 32, lpc2000_info->iap_working_area->address + 0x20);
 288
 289         /* IAP entry point */
 290         init_reg_param(&reg_params[2], "r12", 32, PARAM_OUT);
 291         buf_set_u32(reg_params[2].value, 0, 32, 0x7ffffff1);
 292
 293         /* IAP stack */
 294         init_reg_param(&reg_params[3], "r13_svc", 32, PARAM_OUT);
 295         buf_set_u32(reg_params[3].value, 0, 32, lpc2000_info->iap_working_area->address + 0xac);
 296
 297         /* return address */
 298         init_reg_param(&reg_params[4], "lr_svc", 32, PARAM_OUT);
 299         buf_set_u32(reg_params[4].value, 0, 32, lpc2000_info->iap_working_area->address + 0x4);
 300
 301         target_run_algorithm(target, 2, mem_params, 5, reg_params, lpc2000_info->iap_working_area->address, lpc2000_info->iap_working_area->address + 0x4, 10000, &armv4_5_info);
 302
 303         status_code = buf_get_u32(mem_params[1].value, 0, 32);
 304         result_table[0] = target_buffer_get_u32(target, mem_params[1].value);
 305         result_table[1] = target_buffer_get_u32(target, mem_params[1].value + 4);
 306
 307         destroy_mem_param(&mem_params[0]);
 308         destroy_mem_param(&mem_params[1]);
 309
 310         destroy_reg_param(&reg_params[0]);
 311         destroy_reg_param(&reg_params[1]);
 312         destroy_reg_param(&reg_params[2]);
 313         destroy_reg_param(&reg_params[3]);
 314         destroy_reg_param(&reg_params[4]);
 315
 316         return status_code;
 317 }
 318
 319 static int lpc2000_iap_blank_check(struct flash_bank_s *bank, int first, int last)
 320 {
 321         u32 param_table[5];
 322         u32 result_table[2];
 323         int status_code;
 324         int i;
 325
 326         if ((first < 0) || (last >= bank->num_sectors))
 327                 return ERROR_FLASH_SECTOR_INVALID;
 328
 329         for (i = first; i <= last; i++)
 330         {
 331                 /* check single sector */
 332                 param_table[0] = param_table[1] = i;
 333                 status_code = lpc2000_iap_call(bank, 53, param_table, result_table);
 334
 335                 switch (status_code)
 336                 {
 337                         case ERROR_FLASH_OPERATION_FAILED:
 338                                 return ERROR_FLASH_OPERATION_FAILED;
 339                         case LPC2000_CMD_SUCCESS:
 340                                 bank->sectors[i].is_erased = 1;
 341                                 break;
 342                         case LPC2000_SECTOR_NOT_BLANK:
 343                                 bank->sectors[i].is_erased = 0;
 344                                 break;
 345                         case LPC2000_INVALID_SECTOR:
 346                                 bank->sectors[i].is_erased = 0;
 347                                 break;
 348                         case LPC2000_BUSY:
 349                                 return ERROR_FLASH_BUSY;
 350                                 break;
 351                         default:
 352                                 LOG_ERROR("BUG: unknown LPC2000 status code");
 353                                 exit(-1);
 354                 }
 355         }
 356
 357         return ERROR_OK;
 358 }
 359
 360 /* flash bank lpc2000 <base> <size> 0 0 <target#> <lpc_variant> <cclk> [calc_checksum]
 361  */
 362 static int lpc2000_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
 363 {
 364         lpc2000_flash_bank_t *lpc2000_info;
 365
 366         if (argc < 8)
 367         {
 368                 LOG_WARNING("incomplete flash_bank lpc2000 configuration");
 369                 return ERROR_FLASH_BANK_INVALID;
 370         }
 371
 372         lpc2000_info = malloc(sizeof(lpc2000_flash_bank_t));
 373         bank->driver_priv = lpc2000_info;
 374
 375         if (strcmp(args[6], "lpc2000_v1") == 0)
 376         {
 377                 lpc2000_info->variant = 1;
 378                 lpc2000_info->cmd51_dst_boundary = 512;
 379                 lpc2000_info->cmd51_can_256b = 0;
 380                 lpc2000_info->cmd51_can_8192b = 1;
 381         }
 382         else if (strcmp(args[6], "lpc2000_v2") == 0)
 383         {
 384                 lpc2000_info->variant = 2;
 385                 lpc2000_info->cmd51_dst_boundary = 256;
 386                 lpc2000_info->cmd51_can_256b = 1;
 387                 lpc2000_info->cmd51_can_8192b = 0;
 388         }
 389         else
 390         {
 391                 LOG_ERROR("unknown LPC2000 variant");
 392                 free(lpc2000_info);
 393                 return ERROR_FLASH_BANK_INVALID;
 394         }
 395
 396         lpc2000_info->iap_working_area = NULL;
 397         lpc2000_info->cclk = strtoul(args[7], NULL, 0);
 398         lpc2000_info->calc_checksum = 0;
 399         lpc2000_build_sector_list(bank);
 400
 401         if (argc >= 9)
 402         {
 403                 if (strcmp(args[8], "calc_checksum") == 0)
 404                         lpc2000_info->calc_checksum = 1;
 405         }
 406
 407         return ERROR_OK;
 408 }
 409
 410 static int lpc2000_erase(struct flash_bank_s *bank, int first, int last)
 411 {
 412         lpc2000_flash_bank_t *lpc2000_info = bank->driver_priv;
 413         u32 param_table[5];
 414         u32 result_table[2];
 415         int status_code;
 416
 417         if (bank->target->state != TARGET_HALTED)
 418         {
 419                 LOG_ERROR("Target not halted");
 420                 return ERROR_TARGET_NOT_HALTED;
 421         }
 422
 423         param_table[0] = first;
 424         param_table[1] = last;
 425         param_table[2] = lpc2000_info->cclk;
 426
 427         /* Prepare sectors */
 428         status_code = lpc2000_iap_call(bank, 50, param_table, result_table);
 429         switch (status_code)
 430         {
 431                 case ERROR_FLASH_OPERATION_FAILED:
 432                         return ERROR_FLASH_OPERATION_FAILED;
 433                 case LPC2000_CMD_SUCCESS:
 434                         break;
 435                 case LPC2000_INVALID_SECTOR:
 436                         return ERROR_FLASH_SECTOR_INVALID;
 437                         break;
 438                 default:
 439                         LOG_WARNING("lpc2000 prepare sectors returned %i", status_code);
 440                         return ERROR_FLASH_OPERATION_FAILED;
 441         }
 442
 443         /* Erase sectors */
 444         status_code = lpc2000_iap_call(bank, 52, param_table, result_table);
 445         switch (status_code)
 446         {
 447                 case ERROR_FLASH_OPERATION_FAILED:
 448                         return ERROR_FLASH_OPERATION_FAILED;
 449                 case LPC2000_CMD_SUCCESS:
 450                         break;
 451                 case LPC2000_INVALID_SECTOR:
 452                         return ERROR_FLASH_SECTOR_INVALID;
 453                         break;
 454                 default:
 455                         LOG_WARNING("lpc2000 erase sectors returned %i", status_code);
 456                         return ERROR_FLASH_OPERATION_FAILED;
 457         }
 458
 459         return ERROR_OK;
 460 }
 461
 462 static int lpc2000_protect(struct flash_bank_s *bank, int set, int first, int last)
 463 {
 464         /* can't protect/unprotect on the lpc2000 */
 465         return ERROR_OK;
 466 }
 467
 468 static int lpc2000_write(struct flash_bank_s *bank, uint8_t *buffer, u32 offset, u32 count)
 469 {
 470         lpc2000_flash_bank_t *lpc2000_info = bank->driver_priv;
 471         target_t *target = bank->target;
 472         u32 dst_min_alignment;
 473         u32 bytes_remaining = count;
 474         u32 bytes_written = 0;
 475         int first_sector = 0;
 476         int last_sector = 0;
 477         u32 param_table[5];
 478         u32 result_table[2];
 479         int status_code;
 480         int i;
 481         working_area_t *download_area;
 482         int retval = ERROR_OK;
 483
 484         if (bank->target->state != TARGET_HALTED)
 485         {
 486                 LOG_ERROR("Target not halted");
 487                 return ERROR_TARGET_NOT_HALTED;
 488         }
 489
 490         if (offset + count > bank->size)
 491                 return ERROR_FLASH_DST_OUT_OF_BANK;
 492
 493         if (lpc2000_info->cmd51_can_256b)
 494                 dst_min_alignment = 256;
 495         else
 496                 dst_min_alignment = 512;
 497
 498         if (offset % dst_min_alignment)
 499         {
 500                 LOG_WARNING("offset 0x%x breaks required alignment 0x%x", offset, dst_min_alignment);
 501                 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
 502         }
 503
 504         for (i = 0; i < bank->num_sectors; i++)
 505         {
 506                 if (offset >= bank->sectors[i].offset)
 507                         first_sector = i;
 508                 if (offset + CEIL(count, dst_min_alignment) * dst_min_alignment > bank->sectors[i].offset)
 509                         last_sector = i;
 510         }
 511
 512         LOG_DEBUG("first_sector: %i, last_sector: %i", first_sector, last_sector);
 513
 514         /* check if exception vectors should be flashed */
 515         if ((offset == 0) && (count >= 0x20) && lpc2000_info->calc_checksum)
 516         {
 517                 u32 checksum = 0;
 518                 int i = 0;
 519                 for (i = 0; i < 8; i++)
 520                 {
 521                         LOG_DEBUG("0x%2.2x: 0x%8.8x", i * 4, buf_get_u32(buffer + (i * 4), 0, 32));
 522                         if (i != 5)
 523                                 checksum += buf_get_u32(buffer + (i * 4), 0, 32);
 524                 }
 525                 checksum = 0 - checksum;
 526                 LOG_DEBUG("checksum: 0x%8.8x", checksum);
 527
 528                 u32 original_value=buf_get_u32(buffer + (5 * 4), 0, 32);
 529                 if (original_value!=checksum)
 530                 {
 531                         LOG_WARNING("Verification will fail since checksum in image(0x%8.8x) written to flash was different from calculated vector checksum(0x%8.8x).",
 532                                         original_value, checksum);
 533                         LOG_WARNING("To remove this warning modify build tools on developer PC to inject correct LPC vector checksum.");
 534                 }
 535
 536                 buf_set_u32(buffer + 0x14, 0, 32, checksum);
 537         }
 538
 539         /* allocate a working area */
 540         if (target_alloc_working_area(target, lpc2000_info->cmd51_max_buffer, &download_area) != ERROR_OK)
 541         {
 542                 LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
 543                 return ERROR_FLASH_OPERATION_FAILED;
 544         }
 545
 546         while (bytes_remaining > 0)
 547         {
 548                 u32 thisrun_bytes;
 549                 if (bytes_remaining >= lpc2000_info->cmd51_max_buffer)
 550                         thisrun_bytes = lpc2000_info->cmd51_max_buffer;
 551                 else if (bytes_remaining >= 1024)
 552                         thisrun_bytes = 1024;
 553                 else if ((bytes_remaining >= 512) || (!lpc2000_info->cmd51_can_256b))
 554                         thisrun_bytes = 512;
 555                 else
 556                         thisrun_bytes = 256;
 557
 558                 /* Prepare sectors */
 559                 param_table[0] = first_sector;
 560                 param_table[1] = last_sector;
 561                 status_code = lpc2000_iap_call(bank, 50, param_table, result_table);
 562                 switch (status_code)
 563                 {
 564                         case ERROR_FLASH_OPERATION_FAILED:
 565                                 retval = ERROR_FLASH_OPERATION_FAILED;
 566                                 break;
 567                         case LPC2000_CMD_SUCCESS:
 568                                 break;
 569                         case LPC2000_INVALID_SECTOR:
 570                                 retval = ERROR_FLASH_SECTOR_INVALID;
 571                                 break;
 572                         default:
 573                                 LOG_WARNING("lpc2000 prepare sectors returned %i", status_code);
 574                                 retval = ERROR_FLASH_OPERATION_FAILED;
 575                                 break;
 576                 }
 577
 578                 /* Exit if error occured */
 579                 if (retval != ERROR_OK)
 580                         break;
 581
 582                 if (bytes_remaining >= thisrun_bytes)
 583                 {
 584                         if ((retval = target_write_buffer(bank->target, download_area->address, thisrun_bytes, buffer + bytes_written)) != ERROR_OK)
 585                         {
 586                                 retval = ERROR_FLASH_OPERATION_FAILED;
 587                                 break;
 588                         }
 589                 }
 590                 else
 591                 {
 592                         uint8_t *last_buffer = malloc(thisrun_bytes);
 593                         u32 i;
 594                         memcpy(last_buffer, buffer + bytes_written, bytes_remaining);
 595                         for (i = bytes_remaining; i < thisrun_bytes; i++)
 596                                 last_buffer[i] = 0xff;
 597                         target_write_buffer(bank->target, download_area->address, thisrun_bytes, last_buffer);
 598                         free(last_buffer);
 599                 }
 600
 601                 LOG_DEBUG("writing 0x%x bytes to address 0x%x", thisrun_bytes, bank->base + offset + bytes_written);
 602
 603                 /* Write data */
 604                 param_table[0] = bank->base + offset + bytes_written;
 605                 param_table[1] = download_area->address;
 606                 param_table[2] = thisrun_bytes;
 607                 param_table[3] = lpc2000_info->cclk;
 608                 status_code = lpc2000_iap_call(bank, 51, param_table, result_table);
 609                 switch (status_code)
 610                 {
 611                         case ERROR_FLASH_OPERATION_FAILED:
 612                                 retval = ERROR_FLASH_OPERATION_FAILED;
 613                                 break;
 614                         case LPC2000_CMD_SUCCESS:
 615                                 break;
 616                         case LPC2000_INVALID_SECTOR:
 617                                 retval = ERROR_FLASH_SECTOR_INVALID;
 618                                 break;
 619                         default:
 620                                 LOG_WARNING("lpc2000 returned %i", status_code);
 621                                 retval = ERROR_FLASH_OPERATION_FAILED;
 622                                 break;
 623                 }
 624
 625                 /* Exit if error occured */
 626                 if (retval != ERROR_OK)
 627                         break;
 628
 629                 if (bytes_remaining > thisrun_bytes)
 630                         bytes_remaining -= thisrun_bytes;
 631                 else
 632                         bytes_remaining = 0;
 633                 bytes_written += thisrun_bytes;
 634         }
 635
 636         target_free_working_area(target, download_area);
 637
 638         return retval;
 639 }
 640
 641 static int lpc2000_probe(struct flash_bank_s *bank)
 642 {
 643         /* we can't probe on an lpc2000
 644          * if this is an lpc2xxx, it has the configured flash
 645          */
 646         return ERROR_OK;
 647 }
 648
 649 static int lpc2000_erase_check(struct flash_bank_s *bank)
 650 {
 651         if (bank->target->state != TARGET_HALTED)
 652         {
 653                 LOG_ERROR("Target not halted");
 654                 return ERROR_TARGET_NOT_HALTED;
 655         }
 656
 657         return lpc2000_iap_blank_check(bank, 0, bank->num_sectors - 1);
 658 }
 659
 660 static int lpc2000_protect_check(struct flash_bank_s *bank)
 661 {
 662         /* sectors are always protected */
 663         return ERROR_OK;
 664 }
 665
 666 static int lpc2000_info(struct flash_bank_s *bank, char *buf, int buf_size)
 667 {
 668         lpc2000_flash_bank_t *lpc2000_info = bank->driver_priv;
 669
 670         snprintf(buf, buf_size, "lpc2000 flash driver variant: %i, clk: %i", lpc2000_info->variant, lpc2000_info->cclk);
 671
 672         return ERROR_OK;
 673 }
 674
 675 static int lpc2000_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 676 {
 677         flash_bank_t *bank;
 678         u32 param_table[5];
 679         u32 result_table[2];
 680         int status_code;
 681
 682         if (argc < 1)
 683         {
 684                 return ERROR_COMMAND_SYNTAX_ERROR;
 685         }
 686
 687         bank = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
 688         if (!bank)
 689         {
 690                 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
 691                 return ERROR_OK;
 692         }
 693
 694         if (bank->target->state != TARGET_HALTED)
 695         {
 696                 LOG_ERROR("Target not halted");
 697                 return ERROR_TARGET_NOT_HALTED;
 698         }
 699
 700         if ((status_code = lpc2000_iap_call(bank, 54, param_table, result_table)) != 0x0)
 701         {
 702                 if (status_code == ERROR_FLASH_OPERATION_FAILED)
 703                 {
 704                         command_print(cmd_ctx, "no sufficient working area specified, can't access LPC2000 IAP interface");
 705                         return ERROR_OK;
 706                 }
 707                 command_print(cmd_ctx, "lpc2000 IAP returned status code %i", status_code);
 708         }
 709         else
 710         {
 711                 command_print(cmd_ctx, "lpc2000 part id: 0x%8.8x", result_table[0]);
 712         }
 713
 714         return ERROR_OK;
 715 }