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   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   LPC1700 support Copyright (C) 2009 by Audrius Urmanavicius            *
   6  *   didele.deze@gmail.com                                                 *
   7  *                                                                         *
   8  *   This program is free software; you can redistribute it and/or modify  *
   9  *   it under the terms of the GNU General Public License as published by  *
  10  *   the Free Software Foundation; either version 2 of the License, or     *
  11  *   (at your option) any later version.                                   *
  12  *                                                                         *
  13  *   This program is distributed in the hope that it will be useful,       *
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  16  *   GNU General Public License for more details.                          *
  17  *                                                                         *
  18  *   You should have received a copy of the GNU General Public License     *
  19  *   along with this program; if not, write to the                         *
  20  *   Free Software Foundation, Inc.,                                       *
  21  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  22  ***************************************************************************/
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include "config.h"
  26 #endif
  27
  28 #include "imp.h"
  29 #include "lpc2000.h"
  30 #include <helper/binarybuffer.h>
  31 #include <target/algorithm.h>
  32 #include <target/armv7m.h>
  33
  34
  35 /* flash programming support for NXP LPC17xx and LPC2xxx devices
  36  * currently supported devices:
  37  * variant 1 (lpc2000_v1):
  38  * - 2104 | 5 | 6
  39  * - 2114 | 9
  40  * - 2124 | 9
  41  * - 2194
  42  * - 2212 | 4
  43  * - 2292 | 4
  44  *
  45  * variant 2 (lpc2000_v2):
  46  * - 213x
  47  * - 214x
  48  * - 2101 | 2 | 3
  49  * - 2364 | 6 | 8
  50  * - 2378
  51  *
  52  * lpc1700:
  53  * - 175x
  54  * - 176x (tested with LPC1768)
  55  */
  56
  57 static int lpc2000_build_sector_list(struct flash_bank *bank)
  58 {
  59         struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
  60         int i;
  61         uint32_t offset = 0;
  62
  63         /* default to a 4096 write buffer */
  64         lpc2000_info->cmd51_max_buffer = 4096;
  65
  66         if (lpc2000_info->variant == lpc2000_v1)
  67         {
  68                 /* variant 1 has different layout for 128kb and 256kb flashes */
  69                 if (bank->size == 128 * 1024)
  70                 {
  71                         bank->num_sectors = 16;
  72                         bank->sectors = malloc(sizeof(struct flash_sector) * 16);
  73                         for (i = 0; i < 16; i++)
  74                         {
  75                                 bank->sectors[i].offset = offset;
  76                                 bank->sectors[i].size = 8 * 1024;
  77                                 offset += bank->sectors[i].size;
  78                                 bank->sectors[i].is_erased = -1;
  79                                 bank->sectors[i].is_protected = 1;
  80                         }
  81                 }
  82                 else if (bank->size == 256 * 1024)
  83                 {
  84                         bank->num_sectors = 18;
  85                         bank->sectors = malloc(sizeof(struct flash_sector) * 18);
  86
  87                         for (i = 0; i < 8; i++)
  88                         {
  89                                 bank->sectors[i].offset = offset;
  90                                 bank->sectors[i].size = 8 * 1024;
  91                                 offset += bank->sectors[i].size;
  92                                 bank->sectors[i].is_erased = -1;
  93                                 bank->sectors[i].is_protected = 1;
  94                         }
  95                         for (i = 8; i < 10; i++)
  96                         {
  97                                 bank->sectors[i].offset = offset;
  98                                 bank->sectors[i].size = 64 * 1024;
  99                                 offset += bank->sectors[i].size;
 100                                 bank->sectors[i].is_erased = -1;
 101                                 bank->sectors[i].is_protected = 1;
 102                         }
 103                         for (i = 10; i < 18; i++)
 104                         {
 105                                 bank->sectors[i].offset = offset;
 106                                 bank->sectors[i].size = 8 * 1024;
 107                                 offset += bank->sectors[i].size;
 108                                 bank->sectors[i].is_erased = -1;
 109                                 bank->sectors[i].is_protected = 1;
 110                         }
 111                 }
 112                 else
 113                 {
 114                         LOG_ERROR("BUG: unknown bank->size encountered");
 115                         exit(-1);
 116                 }
 117         }
 118         else if (lpc2000_info->variant == lpc2000_v2)
 119         {
 120                 /* variant 2 has a uniform layout, only number of sectors differs */
 121                 switch (bank->size)
 122                 {
 123                         case 4 * 1024:
 124                                 lpc2000_info->cmd51_max_buffer = 1024;
 125                                 bank->num_sectors = 1;
 126                                 break;
 127                         case 8 * 1024:
 128                                 lpc2000_info->cmd51_max_buffer = 1024;
 129                                 bank->num_sectors = 2;
 130                                 break;
 131                         case 16 * 1024:
 132                                 bank->num_sectors = 4;
 133                                 break;
 134                         case 32 * 1024:
 135                                 bank->num_sectors = 8;
 136                                 break;
 137                         case 64 * 1024:
 138                                 bank->num_sectors = 9;
 139                                 break;
 140                         case 128 * 1024:
 141                                 bank->num_sectors = 11;
 142                                 break;
 143                         case 256 * 1024:
 144                                 bank->num_sectors = 15;
 145                                 break;
 146                         case 512 * 1024:
 147                         case 500 * 1024:
 148                                 bank->num_sectors = 27;
 149                                 break;
 150                         default:
 151                                 LOG_ERROR("BUG: unknown bank->size encountered");
 152                                 exit(-1);
 153                                 break;
 154                 }
 155
 156                 bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
 157
 158                 for (i = 0; i < bank->num_sectors; i++)
 159                 {
 160                         if ((i >= 0) && (i < 8))
 161                         {
 162                                 bank->sectors[i].offset = offset;
 163                                 bank->sectors[i].size = 4 * 1024;
 164                                 offset += bank->sectors[i].size;
 165                                 bank->sectors[i].is_erased = -1;
 166                                 bank->sectors[i].is_protected = 1;
 167                         }
 168                         if ((i >= 8) && (i < 22))
 169                         {
 170                                 bank->sectors[i].offset = offset;
 171                                 bank->sectors[i].size = 32 * 1024;
 172                                 offset += bank->sectors[i].size;
 173                                 bank->sectors[i].is_erased = -1;
 174                                 bank->sectors[i].is_protected = 1;
 175                         }
 176                         if ((i >= 22) && (i < 27))
 177                         {
 178                                 bank->sectors[i].offset = offset;
 179                                 bank->sectors[i].size = 4 * 1024;
 180                                 offset += bank->sectors[i].size;
 181                                 bank->sectors[i].is_erased = -1;
 182                                 bank->sectors[i].is_protected = 1;
 183                         }
 184                 }
 185         }
 186         else if (lpc2000_info->variant == lpc1700)
 187         {
 188                 switch(bank->size)
 189                 {
 190                         case 32 * 1024:
 191                                 bank->num_sectors = 8;
 192                                 break;
 193                         case 64 * 1024:
 194                                 bank->num_sectors = 16;
 195                                 break;
 196                         case 128 * 1024:
 197                                 bank->num_sectors = 18;
 198                                 break;
 199                         case 256 * 1024:
 200                                 bank->num_sectors = 22;
 201                                 break;
 202                         case 512 * 1024:
 203                                 bank->num_sectors = 30;
 204                                 break;
 205                         default:
 206                                 LOG_ERROR("BUG: unknown bank->size encountered");
 207                                 exit(-1);
 208                 }
 209
 210                 bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
 211
 212                 for(i = 0; i < bank->num_sectors; i++)
 213                 {
 214                         bank->sectors[i].offset = offset;
 215                         /* sectors 0-15 are 4kB-sized, 16 and above are 32kB-sized for LPC17xx devices */
 216                         bank->sectors[i].size = (i < 16)? 4 * 1024 : 32 * 1024;
 217                         offset += bank->sectors[i].size;
 218                         bank->sectors[i].is_erased = -1;
 219                         bank->sectors[i].is_protected = 1;
 220                 }
 221         }
 222         else
 223         {
 224                 LOG_ERROR("BUG: unknown lpc2000_info->variant encountered");
 225                 exit(-1);
 226         }
 227
 228         return ERROR_OK;
 229 }
 230
 231 /* call LPC1700/LPC2000 IAP function
 232  * uses 180 bytes working area
 233  * 0x0 to 0x7: jump gate (BX to thumb state, b -2 to wait)
 234  * 0x8 to 0x1f: command parameter table (1+5 words)
 235  * 0x20 to 0x33: command result table (1+4 words)
 236  * 0x34 to 0xb3: stack (only 128b needed)
 237  */
 238 static int lpc2000_iap_call(struct flash_bank *bank, int code, uint32_t param_table[5], uint32_t result_table[4])
 239 {
 240         int retval;
 241         struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
 242         struct target *target = bank->target;
 243         struct mem_param mem_params[2];
 244         struct reg_param reg_params[5];
 245         struct armv4_5_algorithm armv4_5_info; /* for LPC2000 */
 246         struct armv7m_algorithm armv7m_info;   /* for LPC1700 */
 247         uint32_t status_code;
 248         uint32_t iap_entry_point = 0; /* to make compiler happier */
 249
 250         /* regrab previously allocated working_area, or allocate a new one */
 251         if (!lpc2000_info->iap_working_area)
 252         {
 253                 uint8_t jump_gate[8];
 254
 255                 /* make sure we have a working area */
 256                 if (target_alloc_working_area(target, 180, &lpc2000_info->iap_working_area) != ERROR_OK)
 257                 {
 258                         LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
 259                         return ERROR_FLASH_OPERATION_FAILED;
 260                 }
 261
 262                 /* write IAP code to working area */
 263                 switch(lpc2000_info->variant)
 264                 {
 265                         case lpc1700:
 266                                 target_buffer_set_u32(target, jump_gate, ARMV7M_T_BX(12));
 267                                 target_buffer_set_u32(target, jump_gate + 4, ARMV7M_T_B(0xfffffe));
 268                                 break;
 269                         case lpc2000_v1:
 270                         case lpc2000_v2:
 271                                 target_buffer_set_u32(target, jump_gate, ARMV4_5_BX(12));
 272                                 target_buffer_set_u32(target, jump_gate + 4, ARMV4_5_B(0xfffffe, 0));
 273                                 break;
 274                         default:
 275                                 LOG_ERROR("BUG: unknown bank->size encountered");
 276                                 exit(-1);
 277                 }
 278
 279                 if ((retval = target_write_memory(target, lpc2000_info->iap_working_area->address, 4, 2, jump_gate)) != ERROR_OK)
 280                 {
 281                         LOG_ERROR("Write memory at address 0x%8.8" PRIx32 " failed (check work_area definition)", lpc2000_info->iap_working_area->address);
 282                         return retval;
 283                 }
 284         }
 285
 286         switch(lpc2000_info->variant)
 287         {
 288                 case lpc1700:
 289                         armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
 290                         armv7m_info.core_mode = ARMV7M_MODE_ANY;
 291                         iap_entry_point = 0x1fff1ff1;
 292                         break;
 293                 case lpc2000_v1:
 294                 case lpc2000_v2:
 295                         armv4_5_info.common_magic = ARM_COMMON_MAGIC;
 296                         armv4_5_info.core_mode = ARM_MODE_SVC;
 297                         armv4_5_info.core_state = ARM_STATE_ARM;
 298                         iap_entry_point = 0x7ffffff1;
 299                         break;
 300                 default:
 301                         LOG_ERROR("BUG: unknown lpc2000->variant encountered");
 302                         exit(-1);
 303         }
 304
 305         /* command parameter table */
 306         init_mem_param(&mem_params[0], lpc2000_info->iap_working_area->address + 8, 6 * 4, PARAM_OUT);
 307         target_buffer_set_u32(target, mem_params[0].value, code);
 308         target_buffer_set_u32(target, mem_params[0].value + 0x04, param_table[0]);
 309         target_buffer_set_u32(target, mem_params[0].value + 0x08, param_table[1]);
 310         target_buffer_set_u32(target, mem_params[0].value + 0x0c, param_table[2]);
 311         target_buffer_set_u32(target, mem_params[0].value + 0x10, param_table[3]);
 312         target_buffer_set_u32(target, mem_params[0].value + 0x14, param_table[4]);
 313
 314         init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
 315         buf_set_u32(reg_params[0].value, 0, 32, lpc2000_info->iap_working_area->address + 0x08);
 316
 317         /* command result table */
 318         init_mem_param(&mem_params[1], lpc2000_info->iap_working_area->address + 0x20, 5 * 4, PARAM_IN);
 319
 320         init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
 321         buf_set_u32(reg_params[1].value, 0, 32, lpc2000_info->iap_working_area->address + 0x20);
 322
 323         /* IAP entry point */
 324         init_reg_param(&reg_params[2], "r12", 32, PARAM_OUT);
 325         buf_set_u32(reg_params[2].value, 0, 32, iap_entry_point);
 326
 327         switch(lpc2000_info->variant)
 328         {
 329                 case lpc1700:
 330                         /* IAP stack */
 331                         init_reg_param(&reg_params[3], "sp", 32, PARAM_OUT);
 332                         buf_set_u32(reg_params[3].value, 0, 32, lpc2000_info->iap_working_area->address + 0xb4);
 333
 334                         /* return address */
 335                         init_reg_param(&reg_params[4], "lr", 32, PARAM_OUT);
 336                         buf_set_u32(reg_params[4].value, 0, 32, (lpc2000_info->iap_working_area->address + 0x04) | 1); /* bit0 of LR = 1 to return in Thumb mode */
 337
 338                         target_run_algorithm(target, 2, mem_params, 5, reg_params, lpc2000_info->iap_working_area->address, lpc2000_info->iap_working_area->address + 0x4, 10000, &armv7m_info);
 339                         break;
 340                 case lpc2000_v1:
 341                 case lpc2000_v2:
 342                         /* IAP stack */
 343                         init_reg_param(&reg_params[3], "r13_svc", 32, PARAM_OUT);
 344                         buf_set_u32(reg_params[3].value, 0, 32, lpc2000_info->iap_working_area->address + 0xb4);
 345
 346                         /* return address */
 347                         init_reg_param(&reg_params[4], "lr_svc", 32, PARAM_OUT);
 348                         buf_set_u32(reg_params[4].value, 0, 32, lpc2000_info->iap_working_area->address + 0x04);
 349
 350                         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);
 351                         break;
 352                 default:
 353                         LOG_ERROR("BUG: unknown lpc2000->variant encountered");
 354                         exit(-1);
 355         }
 356
 357
 358         status_code     = target_buffer_get_u32(target, mem_params[1].value);
 359         result_table[0] = target_buffer_get_u32(target, mem_params[1].value + 0x04);
 360         result_table[1] = target_buffer_get_u32(target, mem_params[1].value + 0x08);
 361         result_table[2] = target_buffer_get_u32(target, mem_params[1].value + 0x0c);
 362         result_table[3] = target_buffer_get_u32(target, mem_params[1].value + 0x10);
 363
 364         LOG_DEBUG("IAP command = %i (0x%8.8" PRIx32", 0x%8.8" PRIx32", 0x%8.8" PRIx32", 0x%8.8" PRIx32", 0x%8.8" PRIx32") completed with result = %8.8" PRIx32,
 365                           code, param_table[0], param_table[1], param_table[2], param_table[3], param_table[4], status_code);
 366
 367         destroy_mem_param(&mem_params[0]);
 368         destroy_mem_param(&mem_params[1]);
 369
 370         destroy_reg_param(&reg_params[0]);
 371         destroy_reg_param(&reg_params[1]);
 372         destroy_reg_param(&reg_params[2]);
 373         destroy_reg_param(&reg_params[3]);
 374         destroy_reg_param(&reg_params[4]);
 375
 376         return status_code;
 377 }
 378
 379 static int lpc2000_iap_blank_check(struct flash_bank *bank, int first, int last)
 380 {
 381         uint32_t param_table[5];
 382         uint32_t result_table[4];
 383         int status_code;
 384         int i;
 385
 386         if ((first < 0) || (last >= bank->num_sectors))
 387                 return ERROR_FLASH_SECTOR_INVALID;
 388
 389         for (i = first; i <= last; i++)
 390         {
 391                 /* check single sector */
 392                 param_table[0] = param_table[1] = i;
 393                 status_code = lpc2000_iap_call(bank, 53, param_table, result_table);
 394
 395                 switch (status_code)
 396                 {
 397                         case ERROR_FLASH_OPERATION_FAILED:
 398                                 return ERROR_FLASH_OPERATION_FAILED;
 399                         case LPC2000_CMD_SUCCESS:
 400                                 bank->sectors[i].is_erased = 1;
 401                                 break;
 402                         case LPC2000_SECTOR_NOT_BLANK:
 403                                 bank->sectors[i].is_erased = 0;
 404                                 break;
 405                         case LPC2000_INVALID_SECTOR:
 406                                 bank->sectors[i].is_erased = 0;
 407                                 break;
 408                         case LPC2000_BUSY:
 409                                 return ERROR_FLASH_BUSY;
 410                                 break;
 411                         default:
 412                                 LOG_ERROR("BUG: unknown LPC2000 status code %i", status_code);
 413                                 exit(-1);
 414                 }
 415         }
 416
 417         return ERROR_OK;
 418 }
 419
 420 /*
 421  * flash bank lpc2000 <base> <size> 0 0 <target#> <lpc_variant> <cclk> [calc_checksum]
 422  */
 423 FLASH_BANK_COMMAND_HANDLER(lpc2000_flash_bank_command)
 424 {
 425         struct lpc2000_flash_bank *lpc2000_info;
 426
 427         if (CMD_ARGC < 8)
 428         {
 429                 LOG_WARNING("incomplete flash_bank lpc2000 configuration");
 430                 return ERROR_FLASH_BANK_INVALID;
 431         }
 432
 433         lpc2000_info = malloc(sizeof(struct lpc2000_flash_bank));
 434         bank->driver_priv = lpc2000_info;
 435
 436         if (strcmp(CMD_ARGV[6], "lpc2000_v1") == 0)
 437         {
 438                 lpc2000_info->variant = lpc2000_v1;
 439                 lpc2000_info->cmd51_dst_boundary = 512;
 440                 lpc2000_info->cmd51_can_256b = 0;
 441                 lpc2000_info->cmd51_can_8192b = 1;
 442                 lpc2000_info->checksum_vector = 5;
 443         }
 444         else if (strcmp(CMD_ARGV[6], "lpc2000_v2") == 0)
 445         {
 446                 lpc2000_info->variant = lpc2000_v2;
 447                 lpc2000_info->cmd51_dst_boundary = 256;
 448                 lpc2000_info->cmd51_can_256b = 1;
 449                 lpc2000_info->cmd51_can_8192b = 0;
 450                 lpc2000_info->checksum_vector = 5;
 451         }
 452         else if (strcmp(CMD_ARGV[6], "lpc1700") == 0)
 453         {
 454                 lpc2000_info->variant = lpc1700;
 455                 lpc2000_info->cmd51_dst_boundary = 256;
 456                 lpc2000_info->cmd51_can_256b = 1;
 457                 lpc2000_info->cmd51_can_8192b = 0;
 458                 lpc2000_info->checksum_vector = 7;
 459         }
 460         else
 461         {
 462                 LOG_ERROR("unknown LPC2000 variant: %s", CMD_ARGV[6]);
 463                 free(lpc2000_info);
 464                 return ERROR_FLASH_BANK_INVALID;
 465         }
 466
 467         lpc2000_info->iap_working_area = NULL;
 468         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[7], lpc2000_info->cclk);
 469         lpc2000_info->calc_checksum = 0;
 470         lpc2000_build_sector_list(bank);
 471
 472         if (CMD_ARGC >= 9)
 473         {
 474                 if (strcmp(CMD_ARGV[8], "calc_checksum") == 0)
 475                         lpc2000_info->calc_checksum = 1;
 476         }
 477
 478         return ERROR_OK;
 479 }
 480
 481 static int lpc2000_erase(struct flash_bank *bank, int first, int last)
 482 {
 483         struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
 484         uint32_t param_table[5];
 485         uint32_t result_table[4];
 486         int status_code;
 487
 488         if (bank->target->state != TARGET_HALTED)
 489         {
 490                 LOG_ERROR("Target not halted");
 491                 return ERROR_TARGET_NOT_HALTED;
 492         }
 493
 494         param_table[0] = first;
 495         param_table[1] = last;
 496         param_table[2] = lpc2000_info->cclk;
 497
 498         /* Prepare sectors */
 499         status_code = lpc2000_iap_call(bank, 50, param_table, result_table);
 500         switch (status_code)
 501         {
 502                 case ERROR_FLASH_OPERATION_FAILED:
 503                         return ERROR_FLASH_OPERATION_FAILED;
 504                 case LPC2000_CMD_SUCCESS:
 505                         break;
 506                 case LPC2000_INVALID_SECTOR:
 507                         return ERROR_FLASH_SECTOR_INVALID;
 508                         break;
 509                 default:
 510                         LOG_WARNING("lpc2000 prepare sectors returned %i", status_code);
 511                         return ERROR_FLASH_OPERATION_FAILED;
 512         }
 513
 514         /* Erase sectors */
 515         status_code = lpc2000_iap_call(bank, 52, param_table, result_table);
 516         switch (status_code)
 517         {
 518                 case ERROR_FLASH_OPERATION_FAILED:
 519                         return ERROR_FLASH_OPERATION_FAILED;
 520                 case LPC2000_CMD_SUCCESS:
 521                         break;
 522                 case LPC2000_INVALID_SECTOR:
 523                         return ERROR_FLASH_SECTOR_INVALID;
 524                         break;
 525                 default:
 526                         LOG_WARNING("lpc2000 erase sectors returned %i", status_code);
 527                         return ERROR_FLASH_OPERATION_FAILED;
 528         }
 529
 530         return ERROR_OK;
 531 }
 532
 533 static int lpc2000_protect(struct flash_bank *bank, int set, int first, int last)
 534 {
 535         /* can't protect/unprotect on the lpc2000 */
 536         return ERROR_OK;
 537 }
 538
 539 static int lpc2000_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
 540 {
 541         struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
 542         struct target *target = bank->target;
 543         uint32_t dst_min_alignment;
 544         uint32_t bytes_remaining = count;
 545         uint32_t bytes_written = 0;
 546         int first_sector = 0;
 547         int last_sector = 0;
 548         uint32_t param_table[5];
 549         uint32_t result_table[4];
 550         int status_code;
 551         int i;
 552         struct working_area *download_area;
 553         int retval = ERROR_OK;
 554
 555         if (bank->target->state != TARGET_HALTED)
 556         {
 557                 LOG_ERROR("Target not halted");
 558                 return ERROR_TARGET_NOT_HALTED;
 559         }
 560
 561         if (offset + count > bank->size)
 562                 return ERROR_FLASH_DST_OUT_OF_BANK;
 563
 564         dst_min_alignment = lpc2000_info->cmd51_dst_boundary;
 565
 566         if (offset % dst_min_alignment)
 567         {
 568                 LOG_WARNING("offset 0x%" PRIx32 " breaks required alignment 0x%" PRIx32, offset, dst_min_alignment);
 569                 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
 570         }
 571
 572         for (i = 0; i < bank->num_sectors; i++)
 573         {
 574                 if (offset >= bank->sectors[i].offset)
 575                         first_sector = i;
 576                 if (offset + DIV_ROUND_UP(count, dst_min_alignment) * dst_min_alignment > bank->sectors[i].offset)
 577                         last_sector = i;
 578         }
 579
 580         LOG_DEBUG("first_sector: %i, last_sector: %i", first_sector, last_sector);
 581
 582         /* check if exception vectors should be flashed */
 583         if ((offset == 0) && (count >= 0x20) && lpc2000_info->calc_checksum)
 584         {
 585                 uint32_t checksum = 0;
 586                 int i;
 587                 for (i = 0; i < 8; i++)
 588                 {
 589                         LOG_DEBUG("Vector 0x%2.2x: 0x%8.8" PRIx32, i * 4, buf_get_u32(buffer + (i * 4), 0, 32));
 590                         if (i != lpc2000_info->checksum_vector)
 591                                 checksum += buf_get_u32(buffer + (i * 4), 0, 32);
 592                 }
 593                 checksum = 0 - checksum;
 594                 LOG_DEBUG("checksum: 0x%8.8" PRIx32, checksum);
 595
 596                 uint32_t original_value = buf_get_u32(buffer + (lpc2000_info->checksum_vector * 4), 0, 32);
 597                 if (original_value != checksum)
 598                 {
 599                         LOG_WARNING("Verification will fail since checksum in image (0x%8.8" PRIx32 ") to be written to flash is different from calculated vector checksum (0x%8.8" PRIx32 ").",
 600                                         original_value, checksum);
 601                         LOG_WARNING("To remove this warning modify build tools on developer PC to inject correct LPC vector checksum.");
 602                 }
 603
 604                 buf_set_u32(buffer + (lpc2000_info->checksum_vector * 4), 0, 32, checksum);
 605         }
 606
 607         /* allocate a working area */
 608         if (target_alloc_working_area(target, lpc2000_info->cmd51_max_buffer, &download_area) != ERROR_OK)
 609         {
 610                 LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
 611                 return ERROR_FLASH_OPERATION_FAILED;
 612         }
 613
 614         while (bytes_remaining > 0)
 615         {
 616                 uint32_t thisrun_bytes;
 617                 if (bytes_remaining >= lpc2000_info->cmd51_max_buffer)
 618                         thisrun_bytes = lpc2000_info->cmd51_max_buffer;
 619                 else if (bytes_remaining >= 1024)
 620                         thisrun_bytes = 1024;
 621                 else if ((bytes_remaining >= 512) || (!lpc2000_info->cmd51_can_256b))
 622                         thisrun_bytes = 512;
 623                 else
 624                         thisrun_bytes = 256;
 625
 626                 /* Prepare sectors */
 627                 param_table[0] = first_sector;
 628                 param_table[1] = last_sector;
 629                 status_code = lpc2000_iap_call(bank, 50, param_table, result_table);
 630                 switch (status_code)
 631                 {
 632                         case ERROR_FLASH_OPERATION_FAILED:
 633                                 retval = ERROR_FLASH_OPERATION_FAILED;
 634                                 break;
 635                         case LPC2000_CMD_SUCCESS:
 636                                 break;
 637                         case LPC2000_INVALID_SECTOR:
 638                                 retval = ERROR_FLASH_SECTOR_INVALID;
 639                                 break;
 640                         default:
 641                                 LOG_WARNING("lpc2000 prepare sectors returned %i", status_code);
 642                                 retval = ERROR_FLASH_OPERATION_FAILED;
 643                                 break;
 644                 }
 645
 646                 /* Exit if error occured */
 647                 if (retval != ERROR_OK)
 648                         break;
 649
 650                 if (bytes_remaining >= thisrun_bytes)
 651                 {
 652                         if ((retval = target_write_buffer(bank->target, download_area->address, thisrun_bytes, buffer + bytes_written)) != ERROR_OK)
 653                         {
 654                                 retval = ERROR_FLASH_OPERATION_FAILED;
 655                                 break;
 656                         }
 657                 }
 658                 else
 659                 {
 660                         uint8_t *last_buffer = malloc(thisrun_bytes);
 661                         memcpy(last_buffer, buffer + bytes_written, bytes_remaining);
 662                         memset(last_buffer + bytes_remaining, 0xff, thisrun_bytes - bytes_remaining);
 663                         target_write_buffer(bank->target, download_area->address, thisrun_bytes, last_buffer);
 664                         free(last_buffer);
 665                 }
 666
 667                 LOG_DEBUG("writing 0x%" PRIx32 " bytes to address 0x%" PRIx32 , thisrun_bytes, bank->base + offset + bytes_written);
 668
 669                 /* Write data */
 670                 param_table[0] = bank->base + offset + bytes_written;
 671                 param_table[1] = download_area->address;
 672                 param_table[2] = thisrun_bytes;
 673                 param_table[3] = lpc2000_info->cclk;
 674                 status_code = lpc2000_iap_call(bank, 51, param_table, result_table);
 675                 switch (status_code)
 676                 {
 677                         case ERROR_FLASH_OPERATION_FAILED:
 678                                 retval = ERROR_FLASH_OPERATION_FAILED;
 679                                 break;
 680                         case LPC2000_CMD_SUCCESS:
 681                                 break;
 682                         case LPC2000_INVALID_SECTOR:
 683                                 retval = ERROR_FLASH_SECTOR_INVALID;
 684                                 break;
 685                         default:
 686                                 LOG_WARNING("lpc2000 returned %i", status_code);
 687                                 retval = ERROR_FLASH_OPERATION_FAILED;
 688                                 break;
 689                 }
 690
 691                 /* Exit if error occured */
 692                 if (retval != ERROR_OK)
 693                         break;
 694
 695                 if (bytes_remaining > thisrun_bytes)
 696                         bytes_remaining -= thisrun_bytes;
 697                 else
 698                         bytes_remaining = 0;
 699                 bytes_written += thisrun_bytes;
 700         }
 701
 702         target_free_working_area(target, download_area);
 703
 704         return retval;
 705 }
 706
 707 static int lpc2000_probe(struct flash_bank *bank)
 708 {
 709         /* we can't probe on an lpc2000
 710          * if this is an lpc2xxx, it has the configured flash
 711          */
 712         return ERROR_OK;
 713 }
 714
 715 static int lpc2000_erase_check(struct flash_bank *bank)
 716 {
 717         if (bank->target->state != TARGET_HALTED)
 718         {
 719                 LOG_ERROR("Target not halted");
 720                 return ERROR_TARGET_NOT_HALTED;
 721         }
 722
 723         return lpc2000_iap_blank_check(bank, 0, bank->num_sectors - 1);
 724 }
 725
 726 static int lpc2000_protect_check(struct flash_bank *bank)
 727 {
 728         /* sectors are always protected */
 729         return ERROR_OK;
 730 }
 731
 732 static int lpc2000_info(struct flash_bank *bank, char *buf, int buf_size)
 733 {
 734         struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
 735
 736         snprintf(buf, buf_size, "lpc2000 flash driver variant: %i, clk: %" PRIi32 "kHz" , lpc2000_info->variant, lpc2000_info->cclk);
 737
 738         return ERROR_OK;
 739 }
 740
 741 COMMAND_HANDLER(lpc2000_handle_part_id_command)
 742 {
 743         uint32_t param_table[5];
 744         uint32_t result_table[4];
 745         int status_code;
 746
 747         if (CMD_ARGC < 1)
 748         {
 749                 return ERROR_COMMAND_SYNTAX_ERROR;
 750         }
 751
 752         struct flash_bank *bank;
 753         int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
 754         if (ERROR_OK != retval)
 755                 return retval;
 756
 757         if (bank->target->state != TARGET_HALTED)
 758         {
 759                 LOG_ERROR("Target not halted");
 760                 return ERROR_TARGET_NOT_HALTED;
 761         }
 762
 763         if ((status_code = lpc2000_iap_call(bank, 54, param_table, result_table)) != 0x0)
 764         {
 765                 if (status_code == ERROR_FLASH_OPERATION_FAILED)
 766                 {
 767                         command_print(CMD_CTX, "no sufficient working area specified, can't access LPC2000 IAP interface");
 768                         return ERROR_OK;
 769                 }
 770                 command_print(CMD_CTX, "lpc2000 IAP returned status code %i", status_code);
 771         }
 772         else
 773         {
 774                 command_print(CMD_CTX, "lpc2000 part id: 0x%8.8" PRIx32 , result_table[0]);
 775         }
 776
 777         return ERROR_OK;
 778 }
 779
 780 static const struct command_registration lpc2000_exec_command_handlers[] = {
 781         {
 782                 .name = "part_id",
 783                 .handler = &lpc2000_handle_part_id_command,
 784                 .mode = COMMAND_EXEC,
 785                 .help = "print part id of lpc2000 flash bank <num>",
 786         },
 787         COMMAND_REGISTRATION_DONE
 788 };
 789 static const struct command_registration lpc2000_command_handlers[] = {
 790         {
 791                 .name = "lpc2000",
 792                 .mode = COMMAND_ANY,
 793                 .help = "lpc2000 flash command group",
 794                 .chain = lpc2000_exec_command_handlers,
 795         },
 796         COMMAND_REGISTRATION_DONE
 797 };
 798
 799 struct flash_driver lpc2000_flash = {
 800                 .name = "lpc2000",
 801                 .commands = lpc2000_command_handlers,
 802                 .flash_bank_command = &lpc2000_flash_bank_command,
 803                 .erase = &lpc2000_erase,
 804                 .protect = &lpc2000_protect,
 805                 .write = &lpc2000_write,
 806                 .probe = &lpc2000_probe,
 807                 .auto_probe = &lpc2000_probe,
 808                 .erase_check = &lpc2000_erase_check,
 809                 .protect_check = &lpc2000_protect_check,
 810                 .info = &lpc2000_info,
 811         };
 812
 813