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   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
  27 #include "flash.h"
  28 #include "target.h"
  29 #include "log.h"
  30 #include "armv4_5.h"
  31 #include "algorithm.h"
  32 #include "binarybuffer.h"
  33
  34 #include <stdlib.h>
  35 #include <string.h>
  36
  37 /* flash programming support for Philips LPC2xxx devices
  38  * currently supported devices:
  39  * variant 1 (lpc2000_v1):
  40  * - 2104|5|6
  41  * - 2114|9
  42  * - 2124|9
  43  * - 2194
  44  * - 2212|4
  45  * - 2292|4
  46  *
  47  * variant 2 (lpc2000_v2):
  48  * - 213x
  49  * - 214x
  50  * - 2101|2|3
  51  * - 2364|6|8
  52  * - 2378
  53  */
  54
  55 static int lpc2000_register_commands(struct command_context_s *cmd_ctx);
  56 static int lpc2000_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
  57 static int lpc2000_erase(struct flash_bank_s *bank, int first, int last);
  58 static int lpc2000_protect(struct flash_bank_s *bank, int set, int first, int last);
  59 static int lpc2000_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
  60 static int lpc2000_probe(struct flash_bank_s *bank);
  61 static int lpc2000_erase_check(struct flash_bank_s *bank);
  62 static int lpc2000_protect_check(struct flash_bank_s *bank);
  63 static int lpc2000_info(struct flash_bank_s *bank, char *buf, int buf_size);
  64
  65 static int lpc2000_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  66
  67 flash_driver_t lpc2000_flash =
  68 {
  69         .name = "lpc2000",
  70         .register_commands = lpc2000_register_commands,
  71         .flash_bank_command = lpc2000_flash_bank_command,
  72         .erase = lpc2000_erase,
  73         .protect = lpc2000_protect,
  74         .write = lpc2000_write,
  75         .probe = lpc2000_probe,
  76         .auto_probe = lpc2000_probe,
  77         .erase_check = lpc2000_erase_check,
  78         .protect_check = lpc2000_protect_check,
  79         .info = lpc2000_info
  80 };
  81
  82 static int lpc2000_register_commands(struct command_context_s *cmd_ctx)
  83 {
  84         command_t *lpc2000_cmd = register_command(cmd_ctx, NULL, "lpc2000", NULL, COMMAND_ANY, NULL);
  85
  86         register_command(cmd_ctx, lpc2000_cmd, "part_id", lpc2000_handle_part_id_command, COMMAND_EXEC,
  87                                          "print part id of lpc2000 flash bank <num>");
  88
  89         return ERROR_OK;
  90 }
  91
  92 static int lpc2000_build_sector_list(struct flash_bank_s *bank)
  93 {
  94         lpc2000_flash_bank_t *lpc2000_info = bank->driver_priv;
  95
  96         /* default to a 4096 write buffer */
  97         lpc2000_info->cmd51_max_buffer = 4096;
  98
  99         if (lpc2000_info->variant == 1)
 100         {
 101                 int i = 0;
 102                 u32 offset = 0;
 103
 104                 /* variant 1 has different layout for 128kb and 256kb flashes */
 105                 if (bank->size == 128 * 1024)
 106                 {
 107                         bank->num_sectors = 16;
 108                         bank->sectors = malloc(sizeof(flash_sector_t) * 16);
 109                         for (i = 0; i < 16; i++)
 110                         {
 111                                 bank->sectors[i].offset = offset;
 112                                 bank->sectors[i].size = 8 * 1024;
 113                                 offset += bank->sectors[i].size;
 114                                 bank->sectors[i].is_erased = -1;
 115                                 bank->sectors[i].is_protected = 1;
 116                         }
 117                 }
 118                 else if (bank->size == 256 * 1024)
 119                 {
 120                         bank->num_sectors = 18;
 121                         bank->sectors = malloc(sizeof(flash_sector_t) * 18);
 122
 123                         for (i = 0; i < 8; i++)
 124                         {
 125                                 bank->sectors[i].offset = offset;
 126                                 bank->sectors[i].size = 8 * 1024;
 127                                 offset += bank->sectors[i].size;
 128                                 bank->sectors[i].is_erased = -1;
 129                                 bank->sectors[i].is_protected = 1;
 130                         }
 131                         for (i = 8; i < 10; i++)
 132                         {
 133                                 bank->sectors[i].offset = offset;
 134                                 bank->sectors[i].size = 64 * 1024;
 135                                 offset += bank->sectors[i].size;
 136                                 bank->sectors[i].is_erased = -1;
 137                                 bank->sectors[i].is_protected = 1;
 138                         }
 139                         for (i = 10; i < 18; i++)
 140                         {
 141                                 bank->sectors[i].offset = offset;
 142                                 bank->sectors[i].size = 8 * 1024;
 143                                 offset += bank->sectors[i].size;
 144                                 bank->sectors[i].is_erased = -1;
 145                                 bank->sectors[i].is_protected = 1;
 146                         }
 147                 }
 148                 else
 149                 {
 150                         LOG_ERROR("BUG: unknown bank->size encountered");
 151                         exit(-1);
 152                 }
 153         }
 154         else if (lpc2000_info->variant == 2)
 155         {
 156                 int num_sectors;
 157                 int i;
 158                 u32 offset = 0;
 159
 160                 /* variant 2 has a uniform layout, only number of sectors differs */
 161                 switch (bank->size)
 162                 {
 163                         case 4 * 1024:
 164                                 lpc2000_info->cmd51_max_buffer = 1024;
 165                                 num_sectors = 1;
 166                                 break;
 167                         case 8 * 1024:
 168                                 lpc2000_info->cmd51_max_buffer = 1024;
 169                                 num_sectors = 2;
 170                                 break;
 171                         case 16 * 1024:
 172                                 num_sectors = 4;
 173                                 break;
 174                         case 32 * 1024:
 175                                 num_sectors = 8;
 176                                 break;
 177                         case 64 * 1024:
 178                                 num_sectors = 9;
 179                                 break;
 180                         case 128 * 1024:
 181                                 num_sectors = 11;
 182                                 break;
 183                         case 256 * 1024:
 184                                 num_sectors = 15;
 185                                 break;
 186                         case 512 * 1024:
 187                         case 500 * 1024:
 188                                 num_sectors = 27;
 189                                 break;
 190                         default:
 191                                 LOG_ERROR("BUG: unknown bank->size encountered");
 192                                 exit(-1);
 193                                 break;
 194                 }
 195
 196                 bank->num_sectors = num_sectors;
 197                 bank->sectors = malloc(sizeof(flash_sector_t) * num_sectors);
 198
 199                 for (i = 0; i < num_sectors; i++)
 200                 {
 201                         if ((i >= 0) && (i < 8))
 202                         {
 203                                 bank->sectors[i].offset = offset;
 204                                 bank->sectors[i].size = 4 * 1024;
 205                                 offset += bank->sectors[i].size;
 206                                 bank->sectors[i].is_erased = -1;
 207                                 bank->sectors[i].is_protected = 1;
 208                         }
 209                         if ((i >= 8) && (i < 22))
 210                         {
 211                                 bank->sectors[i].offset = offset;
 212                                 bank->sectors[i].size = 32 * 1024;
 213                                 offset += bank->sectors[i].size;
 214                                 bank->sectors[i].is_erased = -1;
 215                                 bank->sectors[i].is_protected = 1;
 216                         }
 217                         if ((i >= 22) && (i < 27))
 218                         {
 219                                 bank->sectors[i].offset = offset;
 220                                 bank->sectors[i].size = 4 * 1024;
 221                                 offset += bank->sectors[i].size;
 222                                 bank->sectors[i].is_erased = -1;
 223                                 bank->sectors[i].is_protected = 1;
 224                         }
 225                 }
 226         }
 227         else
 228         {
 229                 LOG_ERROR("BUG: unknown lpc2000_info->variant encountered");
 230                 exit(-1);
 231         }
 232
 233         return ERROR_OK;
 234 }
 235
 236 /* call LPC2000 IAP function
 237  * uses 172 bytes working area
 238  * 0x0 to 0x7: jump gate (BX to thumb state, b -2 to wait)
 239  * 0x8 to 0x1f: command parameter table
 240  * 0x20 to 0x2b: command result table
 241  * 0x2c to 0xac: stack (only 128b needed)
 242  */
 243 static int lpc2000_iap_call(flash_bank_t *bank, int code, u32 param_table[5], u32 result_table[2])
 244 {
 245         int retval;
 246         lpc2000_flash_bank_t *lpc2000_info = bank->driver_priv;
 247         target_t *target = bank->target;
 248         mem_param_t mem_params[2];
 249         reg_param_t reg_params[5];
 250         armv4_5_algorithm_t armv4_5_info;
 251         u32 status_code;
 252
 253         /* regrab previously allocated working_area, or allocate a new one */
 254         if (!lpc2000_info->iap_working_area)
 255         {
 256                 u8 jump_gate[8];
 257
 258                 /* make sure we have a working area */
 259                 if (target_alloc_working_area(target, 172, &lpc2000_info->iap_working_area) != ERROR_OK)
 260                 {
 261                         LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
 262                         return ERROR_FLASH_OPERATION_FAILED;
 263                 }
 264
 265                 /* write IAP code to working area */
 266                 target_buffer_set_u32(target, jump_gate, ARMV4_5_BX(12));
 267                 target_buffer_set_u32(target, jump_gate + 4, ARMV4_5_B(0xfffffe, 0));
 268                 if((retval = target->type->write_memory(target, lpc2000_info->iap_working_area->address, 4, 2, jump_gate)) != ERROR_OK)
 269                 {
 270                         return retval;
 271                 }
 272         }
 273
 274         armv4_5_info.common_magic = ARMV4_5_COMMON_MAGIC;
 275         armv4_5_info.core_mode = ARMV4_5_MODE_SVC;
 276         armv4_5_info.core_state = ARMV4_5_STATE_ARM;
 277
 278         /* command parameter table */
 279         init_mem_param(&mem_params[0], lpc2000_info->iap_working_area->address + 8, 4 * 6, PARAM_OUT);
 280         target_buffer_set_u32(target, mem_params[0].value, code);
 281         target_buffer_set_u32(target, mem_params[0].value + 0x4, param_table[0]);
 282         target_buffer_set_u32(target, mem_params[0].value + 0x8, param_table[1]);
 283         target_buffer_set_u32(target, mem_params[0].value + 0xc, param_table[2]);
 284         target_buffer_set_u32(target, mem_params[0].value + 0x10, param_table[3]);
 285         target_buffer_set_u32(target, mem_params[0].value + 0x14, param_table[4]);
 286
 287         init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
 288         buf_set_u32(reg_params[0].value, 0, 32, lpc2000_info->iap_working_area->address + 0x8);
 289
 290         /* command result table */
 291         init_mem_param(&mem_params[1], lpc2000_info->iap_working_area->address + 0x20, 4 * 3, PARAM_IN);
 292
 293         init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
 294         buf_set_u32(reg_params[1].value, 0, 32, lpc2000_info->iap_working_area->address + 0x20);
 295
 296         /* IAP entry point */
 297         init_reg_param(&reg_params[2], "r12", 32, PARAM_OUT);
 298         buf_set_u32(reg_params[2].value, 0, 32, 0x7ffffff1);
 299
 300         /* IAP stack */
 301         init_reg_param(&reg_params[3], "r13_svc", 32, PARAM_OUT);
 302         buf_set_u32(reg_params[3].value, 0, 32, lpc2000_info->iap_working_area->address + 0xac);
 303
 304         /* return address */
 305         init_reg_param(&reg_params[4], "lr_svc", 32, PARAM_OUT);
 306         buf_set_u32(reg_params[4].value, 0, 32, lpc2000_info->iap_working_area->address + 0x4);
 307
 308         target->type->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);
 309
 310         status_code = buf_get_u32(mem_params[1].value, 0, 32);
 311         result_table[0] = target_buffer_get_u32(target, mem_params[1].value);
 312         result_table[1] = target_buffer_get_u32(target, mem_params[1].value + 4);
 313
 314         destroy_mem_param(&mem_params[0]);
 315         destroy_mem_param(&mem_params[1]);
 316
 317         destroy_reg_param(&reg_params[0]);
 318         destroy_reg_param(&reg_params[1]);
 319         destroy_reg_param(&reg_params[2]);
 320         destroy_reg_param(&reg_params[3]);
 321         destroy_reg_param(&reg_params[4]);
 322
 323         return status_code;
 324 }
 325
 326 static int lpc2000_iap_blank_check(struct flash_bank_s *bank, int first, int last)
 327 {
 328         u32 param_table[5];
 329         u32 result_table[2];
 330         int status_code;
 331         int i;
 332
 333         if ((first < 0) || (last >= bank->num_sectors))
 334                 return ERROR_FLASH_SECTOR_INVALID;
 335
 336         for (i = first; i <= last; i++)
 337         {
 338                 /* check single sector */
 339                 param_table[0] = param_table[1] = i;
 340                 status_code = lpc2000_iap_call(bank, 53, param_table, result_table);
 341
 342                 switch (status_code)
 343                 {
 344                         case ERROR_FLASH_OPERATION_FAILED:
 345                                 return ERROR_FLASH_OPERATION_FAILED;
 346                         case LPC2000_CMD_SUCCESS:
 347                                 bank->sectors[i].is_erased = 1;
 348                                 break;
 349                         case LPC2000_SECTOR_NOT_BLANK:
 350                                 bank->sectors[i].is_erased = 0;
 351                                 break;
 352                         case LPC2000_INVALID_SECTOR:
 353                                 bank->sectors[i].is_erased = 0;
 354                                 break;
 355                         case LPC2000_BUSY:
 356                                 return ERROR_FLASH_BUSY;
 357                                 break;
 358                         default:
 359                                 LOG_ERROR("BUG: unknown LPC2000 status code");
 360                                 exit(-1);
 361                 }
 362         }
 363
 364         return ERROR_OK;
 365 }
 366
 367 /* flash bank lpc2000 <base> <size> 0 0 <target#> <lpc_variant> <cclk> [calc_checksum]
 368  */
 369 static int lpc2000_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
 370 {
 371         lpc2000_flash_bank_t *lpc2000_info;
 372
 373         if (argc < 8)
 374         {
 375                 LOG_WARNING("incomplete flash_bank lpc2000 configuration");
 376                 return ERROR_FLASH_BANK_INVALID;
 377         }
 378
 379         lpc2000_info = malloc(sizeof(lpc2000_flash_bank_t));
 380         bank->driver_priv = lpc2000_info;
 381
 382         if (strcmp(args[6], "lpc2000_v1") == 0)
 383         {
 384                 lpc2000_info->variant = 1;
 385                 lpc2000_info->cmd51_dst_boundary = 512;
 386                 lpc2000_info->cmd51_can_256b = 0;
 387                 lpc2000_info->cmd51_can_8192b = 1;
 388         }
 389         else if (strcmp(args[6], "lpc2000_v2") == 0)
 390         {
 391                 lpc2000_info->variant = 2;
 392                 lpc2000_info->cmd51_dst_boundary = 256;
 393                 lpc2000_info->cmd51_can_256b = 1;
 394                 lpc2000_info->cmd51_can_8192b = 0;
 395         }
 396         else
 397         {
 398                 LOG_ERROR("unknown LPC2000 variant");
 399                 free(lpc2000_info);
 400                 return ERROR_FLASH_BANK_INVALID;
 401         }
 402
 403         lpc2000_info->iap_working_area = NULL;
 404         lpc2000_info->cclk = strtoul(args[7], NULL, 0);
 405         lpc2000_info->calc_checksum = 0;
 406         lpc2000_build_sector_list(bank);
 407
 408         if (argc >= 9)
 409         {
 410                 if (strcmp(args[8], "calc_checksum") == 0)
 411                         lpc2000_info->calc_checksum = 1;
 412         }
 413
 414         return ERROR_OK;
 415 }
 416
 417 static int lpc2000_erase(struct flash_bank_s *bank, int first, int last)
 418 {
 419         lpc2000_flash_bank_t *lpc2000_info = bank->driver_priv;
 420         u32 param_table[5];
 421         u32 result_table[2];
 422         int status_code;
 423
 424         if (bank->target->state != TARGET_HALTED)
 425         {
 426                 LOG_ERROR("Target not halted");
 427                 return ERROR_TARGET_NOT_HALTED;
 428         }
 429
 430         param_table[0] = first;
 431         param_table[1] = last;
 432         param_table[2] = lpc2000_info->cclk;
 433
 434         /* Prepare sectors */
 435         status_code = lpc2000_iap_call(bank, 50, param_table, result_table);
 436         switch (status_code)
 437         {
 438                 case ERROR_FLASH_OPERATION_FAILED:
 439                         return ERROR_FLASH_OPERATION_FAILED;
 440                 case LPC2000_CMD_SUCCESS:
 441                         break;
 442                 case LPC2000_INVALID_SECTOR:
 443                         return ERROR_FLASH_SECTOR_INVALID;
 444                         break;
 445                 default:
 446                         LOG_WARNING("lpc2000 prepare sectors returned %i", status_code);
 447                         return ERROR_FLASH_OPERATION_FAILED;
 448         }
 449
 450         /* Erase sectors */
 451         status_code = lpc2000_iap_call(bank, 52, param_table, result_table);
 452         switch (status_code)
 453         {
 454                 case ERROR_FLASH_OPERATION_FAILED:
 455                         return ERROR_FLASH_OPERATION_FAILED;
 456                 case LPC2000_CMD_SUCCESS:
 457                         break;
 458                 case LPC2000_INVALID_SECTOR:
 459                         return ERROR_FLASH_SECTOR_INVALID;
 460                         break;
 461                 default:
 462                         LOG_WARNING("lpc2000 erase sectors returned %i", status_code);
 463                         return ERROR_FLASH_OPERATION_FAILED;
 464         }
 465
 466         return ERROR_OK;
 467 }
 468
 469 static int lpc2000_protect(struct flash_bank_s *bank, int set, int first, int last)
 470 {
 471         /* can't protect/unprotect on the lpc2000 */
 472         return ERROR_OK;
 473 }
 474
 475 static int lpc2000_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
 476 {
 477         lpc2000_flash_bank_t *lpc2000_info = bank->driver_priv;
 478         target_t *target = bank->target;
 479         u32 dst_min_alignment;
 480         u32 bytes_remaining = count;
 481         u32 bytes_written = 0;
 482         int first_sector = 0;
 483         int last_sector = 0;
 484         u32 param_table[5];
 485         u32 result_table[2];
 486         int status_code;
 487         int i;
 488         working_area_t *download_area;
 489         int retval = ERROR_OK;
 490
 491         if (bank->target->state != TARGET_HALTED)
 492         {
 493                 LOG_ERROR("Target not halted");
 494                 return ERROR_TARGET_NOT_HALTED;
 495         }
 496
 497         if (offset + count > bank->size)
 498                 return ERROR_FLASH_DST_OUT_OF_BANK;
 499
 500         if (lpc2000_info->cmd51_can_256b)
 501                 dst_min_alignment = 256;
 502         else
 503                 dst_min_alignment = 512;
 504
 505         if (offset % dst_min_alignment)
 506         {
 507                 LOG_WARNING("offset 0x%x breaks required alignment 0x%x", offset, dst_min_alignment);
 508                 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
 509         }
 510
 511         for (i = 0; i < bank->num_sectors; i++)
 512         {
 513                 if (offset >= bank->sectors[i].offset)
 514                         first_sector = i;
 515                 if (offset + CEIL(count, dst_min_alignment) * dst_min_alignment > bank->sectors[i].offset)
 516                         last_sector = i;
 517         }
 518
 519         LOG_DEBUG("first_sector: %i, last_sector: %i", first_sector, last_sector);
 520
 521         /* check if exception vectors should be flashed */
 522         if ((offset == 0) && (count >= 0x20) && lpc2000_info->calc_checksum)
 523         {
 524                 u32 checksum = 0;
 525                 int i = 0;
 526                 for (i = 0; i < 8; i++)
 527                 {
 528                         LOG_DEBUG("0x%2.2x: 0x%8.8x", i * 4, buf_get_u32(buffer + (i * 4), 0, 32));
 529                         if (i != 5)
 530                                 checksum += buf_get_u32(buffer + (i * 4), 0, 32);
 531                 }
 532                 checksum = 0 - checksum;
 533                 LOG_DEBUG("checksum: 0x%8.8x", checksum);
 534
 535                 u32 original_value=buf_get_u32(buffer + (5 * 4), 0, 32);
 536                 if (original_value!=checksum)
 537                 {
 538                         LOG_WARNING("Verification will fail since checksum in image(0x%8.8x) written to flash was different from calculated vector checksum(0x%8.8x).",
 539                                         original_value, checksum);
 540                         LOG_WARNING("To remove this warning modify build tools on developer PC to inject correct LPC vector checksum.");
 541                 }
 542
 543                 buf_set_u32(buffer + 0x14, 0, 32, checksum);
 544         }
 545
 546         /* allocate a working area */
 547         if (target_alloc_working_area(target, lpc2000_info->cmd51_max_buffer, &download_area) != ERROR_OK)
 548         {
 549                 LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
 550                 return ERROR_FLASH_OPERATION_FAILED;
 551         }
 552
 553         while (bytes_remaining > 0)
 554         {
 555                 u32 thisrun_bytes;
 556                 if (bytes_remaining >= lpc2000_info->cmd51_max_buffer)
 557                         thisrun_bytes = lpc2000_info->cmd51_max_buffer;
 558                 else if (bytes_remaining >= 1024)
 559                         thisrun_bytes = 1024;
 560                 else if ((bytes_remaining >= 512) || (!lpc2000_info->cmd51_can_256b))
 561                         thisrun_bytes = 512;
 562                 else
 563                         thisrun_bytes = 256;
 564
 565                 /* Prepare sectors */
 566                 param_table[0] = first_sector;
 567                 param_table[1] = last_sector;
 568                 status_code = lpc2000_iap_call(bank, 50, param_table, result_table);
 569                 switch (status_code)
 570                 {
 571                         case ERROR_FLASH_OPERATION_FAILED:
 572                                 retval = ERROR_FLASH_OPERATION_FAILED;
 573                                 break;
 574                         case LPC2000_CMD_SUCCESS:
 575                                 break;
 576                         case LPC2000_INVALID_SECTOR:
 577                                 retval = ERROR_FLASH_SECTOR_INVALID;
 578                                 break;
 579                         default:
 580                                 LOG_WARNING("lpc2000 prepare sectors returned %i", status_code);
 581                                 retval = ERROR_FLASH_OPERATION_FAILED;
 582                                 break;
 583                 }
 584
 585                 /* Exit if error occured */
 586                 if (retval != ERROR_OK)
 587                         break;
 588
 589                 if (bytes_remaining >= thisrun_bytes)
 590                 {
 591                         if ((retval = target_write_buffer(bank->target, download_area->address, thisrun_bytes, buffer + bytes_written)) != ERROR_OK)
 592                         {
 593                                 retval = ERROR_FLASH_OPERATION_FAILED;
 594                                 break;
 595                         }
 596                 }
 597                 else
 598                 {
 599                         u8 *last_buffer = malloc(thisrun_bytes);
 600                         u32 i;
 601                         memcpy(last_buffer, buffer + bytes_written, bytes_remaining);
 602                         for (i = bytes_remaining; i < thisrun_bytes; i++)
 603                                 last_buffer[i] = 0xff;
 604                         target_write_buffer(bank->target, download_area->address, thisrun_bytes, last_buffer);
 605                         free(last_buffer);
 606                 }
 607
 608                 LOG_DEBUG("writing 0x%x bytes to address 0x%x", thisrun_bytes, bank->base + offset + bytes_written);
 609
 610                 /* Write data */
 611                 param_table[0] = bank->base + offset + bytes_written;
 612                 param_table[1] = download_area->address;
 613                 param_table[2] = thisrun_bytes;
 614                 param_table[3] = lpc2000_info->cclk;
 615                 status_code = lpc2000_iap_call(bank, 51, param_table, result_table);
 616                 switch (status_code)
 617                 {
 618                         case ERROR_FLASH_OPERATION_FAILED:
 619                                 retval = ERROR_FLASH_OPERATION_FAILED;
 620                                 break;
 621                         case LPC2000_CMD_SUCCESS:
 622                                 break;
 623                         case LPC2000_INVALID_SECTOR:
 624                                 retval = ERROR_FLASH_SECTOR_INVALID;
 625                                 break;
 626                         default:
 627                                 LOG_WARNING("lpc2000 returned %i", status_code);
 628                                 retval = ERROR_FLASH_OPERATION_FAILED;
 629                                 break;
 630                 }
 631
 632                 /* Exit if error occured */
 633                 if (retval != ERROR_OK)
 634                         break;
 635
 636                 if (bytes_remaining > thisrun_bytes)
 637                         bytes_remaining -= thisrun_bytes;
 638                 else
 639                         bytes_remaining = 0;
 640                 bytes_written += thisrun_bytes;
 641         }
 642
 643         target_free_working_area(target, download_area);
 644
 645         return retval;
 646 }
 647
 648 static int lpc2000_probe(struct flash_bank_s *bank)
 649 {
 650         /* we can't probe on an lpc2000
 651          * if this is an lpc2xxx, it has the configured flash
 652          */
 653         return ERROR_OK;
 654 }
 655
 656 static int lpc2000_erase_check(struct flash_bank_s *bank)
 657 {
 658         if (bank->target->state != TARGET_HALTED)
 659         {
 660                 LOG_ERROR("Target not halted");
 661                 return ERROR_TARGET_NOT_HALTED;
 662         }
 663
 664         return lpc2000_iap_blank_check(bank, 0, bank->num_sectors - 1);
 665 }
 666
 667 static int lpc2000_protect_check(struct flash_bank_s *bank)
 668 {
 669         /* sectors are always protected */
 670         return ERROR_OK;
 671 }
 672
 673 static int lpc2000_info(struct flash_bank_s *bank, char *buf, int buf_size)
 674 {
 675         lpc2000_flash_bank_t *lpc2000_info = bank->driver_priv;
 676
 677         snprintf(buf, buf_size, "lpc2000 flash driver variant: %i, clk: %i", lpc2000_info->variant, lpc2000_info->cclk);
 678
 679         return ERROR_OK;
 680 }
 681
 682 static int lpc2000_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 683 {
 684         flash_bank_t *bank;
 685         u32 param_table[5];
 686         u32 result_table[2];
 687         int status_code;
 688
 689         if (argc < 1)
 690         {
 691                 return ERROR_COMMAND_SYNTAX_ERROR;
 692         }
 693
 694         bank = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
 695         if (!bank)
 696         {
 697                 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
 698                 return ERROR_OK;
 699         }
 700
 701         if (bank->target->state != TARGET_HALTED)
 702         {
 703                 LOG_ERROR("Target not halted");
 704                 return ERROR_TARGET_NOT_HALTED;
 705         }
 706
 707         if ((status_code = lpc2000_iap_call(bank, 54, param_table, result_table)) != 0x0)
 708         {
 709                 if (status_code == ERROR_FLASH_OPERATION_FAILED)
 710                 {
 711                         command_print(cmd_ctx, "no sufficient working area specified, can't access LPC2000 IAP interface");
 712                         return ERROR_OK;
 713                 }
 714                 command_print(cmd_ctx, "lpc2000 IAP returned status code %i", status_code);
 715         }
 716         else
 717         {
 718                 command_print(cmd_ctx, "lpc2000 part id: 0x%8.8x", result_table[0]);
 719         }
 720
 721         return ERROR_OK;
 722 }