git.gag.com Git - fw/openocd/blob - src/flash/nor/lpc2000.c

   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 "lpc2000.h"
  29 #include "armv7m.h"
  30 #include "binarybuffer.h"
  31 #include "algorithm.h"
  32
  33
  34 /* flash programming support for NXP LPC17xx and LPC2xxx devices
  35  * currently supported devices:
  36  * variant 1 (lpc2000_v1):
  37  * - 2104 | 5 | 6
  38  * - 2114 | 9
  39  * - 2124 | 9
  40  * - 2194
  41  * - 2212 | 4
  42  * - 2292 | 4
  43  *
  44  * variant 2 (lpc2000_v2):
  45  * - 213x
  46  * - 214x
  47  * - 2101 | 2 | 3
  48  * - 2364 | 6 | 8
  49  * - 2378
  50  *
  51  * lpc1700:
  52  * - 175x
  53  * - 176x (tested with LPC1768)
  54  */
  55
  56 static int lpc2000_build_sector_list(struct flash_bank *bank)
  57 {
  58         struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
  59         int i;
  60         uint32_t offset = 0;
  61
  62         /* default to a 4096 write buffer */
  63         lpc2000_info->cmd51_max_buffer = 4096;
  64
  65         if (lpc2000_info->variant == lpc2000_v1)
  66         {
  67                 /* variant 1 has different layout for 128kb and 256kb flashes */
  68                 if (bank->size == 128 * 1024)
  69                 {
  70                         bank->num_sectors = 16;
  71                         bank->sectors = malloc(sizeof(struct flash_sector) * 16);
  72                         for (i = 0; i < 16; i++)
  73                         {
  74                                 bank->sectors[i].offset = offset;
  75                                 bank->sectors[i].size = 8 * 1024;
  76                                 offset += bank->sectors[i].size;
  77                                 bank->sectors[i].is_erased = -1;
  78                                 bank->sectors[i].is_protected = 1;
  79                         }
  80                 }
  81                 else if (bank->size == 256 * 1024)
  82                 {
  83                         bank->num_sectors = 18;
  84                         bank->sectors = malloc(sizeof(struct flash_sector) * 18);
  85
  86                         for (i = 0; i < 8; i++)
  87                         {
  88                                 bank->sectors[i].offset = offset;
  89                                 bank->sectors[i].size = 8 * 1024;
  90                                 offset += bank->sectors[i].size;
  91                                 bank->sectors[i].is_erased = -1;
  92                                 bank->sectors[i].is_protected = 1;
  93                         }
  94                         for (i = 8; i < 10; i++)
  95                         {
  96                                 bank->sectors[i].offset = offset;
  97                                 bank->sectors[i].size = 64 * 1024;
  98                                 offset += bank->sectors[i].size;
  99                                 bank->sectors[i].is_erased = -1;
 100                                 bank->sectors[i].is_protected = 1;
 101                         }
 102                         for (i = 10; i < 18; 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
 112                 {
 113                         LOG_ERROR("BUG: unknown bank->size encountered");
 114                         exit(-1);
 115                 }
 116         }
 117         else if (lpc2000_info->variant == lpc2000_v2)
 118         {
 119                 /* variant 2 has a uniform layout, only number of sectors differs */
 120                 switch (bank->size)
 121                 {
 122                         case 4 * 1024:
 123                                 lpc2000_info->cmd51_max_buffer = 1024;
 124                                 bank->num_sectors = 1;
 125                                 break;
 126                         case 8 * 1024:
 127                                 lpc2000_info->cmd51_max_buffer = 1024;
 128                                 bank->num_sectors = 2;
 129                                 break;
 130                         case 16 * 1024:
 131                                 bank->num_sectors = 4;
 132                                 break;
 133                         case 32 * 1024:
 134                                 bank->num_sectors = 8;
 135                                 break;
 136                         case 64 * 1024:
 137                                 bank->num_sectors = 9;
 138                                 break;
 139                         case 128 * 1024:
 140                                 bank->num_sectors = 11;
 141                                 break;
 142                         case 256 * 1024:
 143                                 bank->num_sectors = 15;
 144                                 break;
 145                         case 512 * 1024:
 146                         case 500 * 1024:
 147                                 bank->num_sectors = 27;
 148                                 break;
 149                         default:
 150                                 LOG_ERROR("BUG: unknown bank->size encountered");
 151                                 exit(-1);
 152                                 break;
 153                 }
 154
 155                 bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
 156
 157                 for (i = 0; i < bank->num_sectors; i++)
 158                 {
 159                         if ((i >= 0) && (i < 8))
 160                         {
 161                                 bank->sectors[i].offset = offset;
 162                                 bank->sectors[i].size = 4 * 1024;
 163                                 offset += bank->sectors[i].size;
 164                                 bank->sectors[i].is_erased = -1;
 165                                 bank->sectors[i].is_protected = 1;
 166                         }
 167                         if ((i >= 8) && (i < 22))
 168                         {
 169                                 bank->sectors[i].offset = offset;
 170                                 bank->sectors[i].size = 32 * 1024;
 171                                 offset += bank->sectors[i].size;
 172                                 bank->sectors[i].is_erased = -1;
 173                                 bank->sectors[i].is_protected = 1;
 174                         }
 175                         if ((i >= 22) && (i < 27))
 176                         {
 177                                 bank->sectors[i].offset = offset;
 178                                 bank->sectors[i].size = 4 * 1024;
 179                                 offset += bank->sectors[i].size;
 180                                 bank->sectors[i].is_erased = -1;
 181                                 bank->sectors[i].is_protected = 1;
 182                         }
 183                 }
 184         }
 185         else if (lpc2000_info->variant == lpc1700)
 186         {
 187                 switch(bank->size)
 188                 {
 189                         case 32 * 1024:
 190                                 bank->num_sectors = 8;
 191                                 break;
 192                         case 64 * 1024:
 193                                 bank->num_sectors = 16;
 194                                 break;
 195                         case 128 * 1024:
 196                                 bank->num_sectors = 18;
 197                                 break;
 198                         case 256 * 1024:
 199                                 bank->num_sectors = 22;
 200                                 break;
 201                         case 512 * 1024:
 202                                 bank->num_sectors = 30;
 203                                 break;
 204                         default:
 205                                 LOG_ERROR("BUG: unknown bank->size encountered");
 206                                 exit(-1);
 207                 }
 208
 209                 bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
 210
 211                 for(i = 0; i < bank->num_sectors; i++)
 212                 {
 213                         bank->sectors[i].offset = offset;
 214                         /* sectors 0-15 are 4kB-sized, 16 and above are 32kB-sized for LPC17xx devices */
 215                         bank->sectors[i].size = (i < 16)? 4 * 1024 : 32 * 1024;
 216                         offset += bank->sectors[i].size;
 217                         bank->sectors[i].is_erased = -1;
 218                         bank->sectors[i].is_protected = 1;
 219                 }
 220         }
 221         else
 222         {
 223                 LOG_ERROR("BUG: unknown lpc2000_info->variant encountered");
 224                 exit(-1);
 225         }
 226
 227         return ERROR_OK;
 228 }
 229
 230 /* call LPC1700/LPC2000 IAP function
 231  * uses 180 bytes working area
 232  * 0x0 to 0x7: jump gate (BX to thumb state, b -2 to wait)
 233  * 0x8 to 0x1f: command parameter table (1+5 words)
 234  * 0x20 to 0x33: command result table (1+4 words)
 235  * 0x34 to 0xb3: stack (only 128b needed)
 236  */
 237 static int lpc2000_iap_call(struct flash_bank *bank, int code, uint32_t param_table[5], uint32_t result_table[4])
 238 {
 239         int retval;
 240         struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
 241         struct target *target = bank->target;
 242         struct mem_param mem_params[2];
 243         struct reg_param reg_params[5];
 244         struct armv4_5_algorithm armv4_5_info; /* for LPC2000 */
 245         struct armv7m_algorithm armv7m_info;   /* for LPC1700 */
 246         uint32_t status_code;
 247         uint32_t iap_entry_point = 0; /* to make compiler happier */
 248
 249         /* regrab previously allocated working_area, or allocate a new one */
 250         if (!lpc2000_info->iap_working_area)
 251         {
 252                 uint8_t jump_gate[8];
 253
 254                 /* make sure we have a working area */
 255                 if (target_alloc_working_area(target, 180, &lpc2000_info->iap_working_area) != ERROR_OK)
 256                 {
 257                         LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
 258                         return ERROR_FLASH_OPERATION_FAILED;
 259                 }
 260
 261                 /* write IAP code to working area */
 262                 switch(lpc2000_info->variant)
 263                 {
 264                         case lpc1700:
 265                                 target_buffer_set_u32(target, jump_gate, ARMV7M_T_BX(12));
 266                                 target_buffer_set_u32(target, jump_gate + 4, ARMV7M_T_B(0xfffffe));
 267                                 break;
 268                         case lpc2000_v1:
 269                         case lpc2000_v2:
 270                                 target_buffer_set_u32(target, jump_gate, ARMV4_5_BX(12));
 271                                 target_buffer_set_u32(target, jump_gate + 4, ARMV4_5_B(0xfffffe, 0));
 272                                 break;
 273                         default:
 274                                 LOG_ERROR("BUG: unknown bank->size encountered");
 275                                 exit(-1);
 276                 }
 277
 278                 if ((retval = target_write_memory(target, lpc2000_info->iap_working_area->address, 4, 2, jump_gate)) != ERROR_OK)
 279                 {
 280                         LOG_ERROR("Write memory at address 0x%8.8" PRIx32 " failed (check work_area definition)", lpc2000_info->iap_working_area->address);
 281                         return retval;
 282                 }
 283         }
 284
 285         switch(lpc2000_info->variant)
 286         {
 287                 case lpc1700:
 288                         armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
 289                         armv7m_info.core_mode = ARMV7M_MODE_ANY;
 290                         iap_entry_point = 0x1fff1ff1;
 291                         break;
 292                 case lpc2000_v1:
 293                 case lpc2000_v2:
 294                         armv4_5_info.common_magic = ARMV4_5_COMMON_MAGIC;
 295                         armv4_5_info.core_mode = ARMV4_5_MODE_SVC;
 296                         armv4_5_info.core_state = ARMV4_5_STATE_ARM;
 297                         iap_entry_point = 0x7ffffff1;
 298                         break;
 299                 default:
 300                         LOG_ERROR("BUG: unknown lpc2000->variant encountered");
 301                         exit(-1);
 302         }
 303
 304         /* command parameter table */
 305         init_mem_param(&mem_params[0], lpc2000_info->iap_working_area->address + 8, 6 * 4, PARAM_OUT);
 306         target_buffer_set_u32(target, mem_params[0].value, code);
 307         target_buffer_set_u32(target, mem_params[0].value + 0x04, param_table[0]);
 308         target_buffer_set_u32(target, mem_params[0].value + 0x08, param_table[1]);
 309         target_buffer_set_u32(target, mem_params[0].value + 0x0c, param_table[2]);
 310         target_buffer_set_u32(target, mem_params[0].value + 0x10, param_table[3]);
 311         target_buffer_set_u32(target, mem_params[0].value + 0x14, param_table[4]);
 312
 313         init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
 314         buf_set_u32(reg_params[0].value, 0, 32, lpc2000_info->iap_working_area->address + 0x08);
 315
 316         /* command result table */
 317         init_mem_param(&mem_params[1], lpc2000_info->iap_working_area->address + 0x20, 5 * 4, PARAM_IN);
 318
 319         init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
 320         buf_set_u32(reg_params[1].value, 0, 32, lpc2000_info->iap_working_area->address + 0x20);
 321
 322         /* IAP entry point */
 323         init_reg_param(&reg_params[2], "r12", 32, PARAM_OUT);
 324         buf_set_u32(reg_params[2].value, 0, 32, iap_entry_point);
 325
 326         switch(lpc2000_info->variant)
 327         {
 328                 case lpc1700:
 329                         /* IAP stack */
 330                         init_reg_param(&reg_params[3], "sp", 32, PARAM_OUT);
 331                         buf_set_u32(reg_params[3].value, 0, 32, lpc2000_info->iap_working_area->address + 0xb4);
 332
 333                         /* return address */
 334                         init_reg_param(&reg_params[4], "lr", 32, PARAM_OUT);
 335                         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 */
 336
 337                         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);
 338                         break;
 339                 case lpc2000_v1:
 340                 case lpc2000_v2:
 341                         /* IAP stack */
 342                         init_reg_param(&reg_params[3], "r13_svc", 32, PARAM_OUT);
 343                         buf_set_u32(reg_params[3].value, 0, 32, lpc2000_info->iap_working_area->address + 0xb4);
 344
 345                         /* return address */
 346                         init_reg_param(&reg_params[4], "lr_svc", 32, PARAM_OUT);
 347                         buf_set_u32(reg_params[4].value, 0, 32, lpc2000_info->iap_working_area->address + 0x04);
 348
 349                         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);
 350                         break;
 351                 default:
 352                         LOG_ERROR("BUG: unknown lpc2000->variant encountered");
 353                         exit(-1);
 354         }
 355
 356
 357         status_code     = target_buffer_get_u32(target, mem_params[1].value);
 358         result_table[0] = target_buffer_get_u32(target, mem_params[1].value + 0x04);
 359         result_table[1] = target_buffer_get_u32(target, mem_params[1].value + 0x08);
 360         result_table[2] = target_buffer_get_u32(target, mem_params[1].value + 0x0c);
 361         result_table[3] = target_buffer_get_u32(target, mem_params[1].value + 0x10);
 362
 363         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,
 364                           code, param_table[0], param_table[1], param_table[2], param_table[3], param_table[4], status_code);
 365
 366         destroy_mem_param(&mem_params[0]);
 367         destroy_mem_param(&mem_params[1]);
 368
 369         destroy_reg_param(&reg_params[0]);
 370         destroy_reg_param(&reg_params[1]);
 371         destroy_reg_param(&reg_params[2]);
 372         destroy_reg_param(&reg_params[3]);
 373         destroy_reg_param(&reg_params[4]);
 374
 375         return status_code;
 376 }
 377
 378 static int lpc2000_iap_blank_check(struct flash_bank *bank, int first, int last)
 379 {
 380         uint32_t param_table[5];
 381         uint32_t result_table[4];
 382         int status_code;
 383         int i;
 384
 385         if ((first < 0) || (last >= bank->num_sectors))
 386                 return ERROR_FLASH_SECTOR_INVALID;
 387
 388         for (i = first; i <= last; i++)
 389         {
 390                 /* check single sector */
 391                 param_table[0] = param_table[1] = i;
 392                 status_code = lpc2000_iap_call(bank, 53, param_table, result_table);
 393
 394                 switch (status_code)
 395                 {
 396                         case ERROR_FLASH_OPERATION_FAILED:
 397                                 return ERROR_FLASH_OPERATION_FAILED;
 398                         case LPC2000_CMD_SUCCESS:
 399                                 bank->sectors[i].is_erased = 1;
 400                                 break;
 401                         case LPC2000_SECTOR_NOT_BLANK:
 402                                 bank->sectors[i].is_erased = 0;
 403                                 break;
 404                         case LPC2000_INVALID_SECTOR:
 405                                 bank->sectors[i].is_erased = 0;
 406                                 break;
 407                         case LPC2000_BUSY:
 408                                 return ERROR_FLASH_BUSY;
 409                                 break;
 410                         default:
 411                                 LOG_ERROR("BUG: unknown LPC2000 status code %i", status_code);
 412                                 exit(-1);
 413                 }
 414         }
 415
 416         return ERROR_OK;
 417 }
 418
 419 /*
 420  * flash bank lpc2000 <base> <size> 0 0 <target#> <lpc_variant> <cclk> [calc_checksum]
 421  */
 422 FLASH_BANK_COMMAND_HANDLER(lpc2000_flash_bank_command)
 423 {
 424         struct lpc2000_flash_bank *lpc2000_info;
 425
 426         if (CMD_ARGC < 8)
 427         {
 428                 LOG_WARNING("incomplete flash_bank lpc2000 configuration");
 429                 return ERROR_FLASH_BANK_INVALID;
 430         }
 431
 432         lpc2000_info = malloc(sizeof(struct lpc2000_flash_bank));
 433         bank->driver_priv = lpc2000_info;
 434
 435         if (strcmp(CMD_ARGV[6], "lpc2000_v1") == 0)
 436         {
 437                 lpc2000_info->variant = lpc2000_v1;
 438                 lpc2000_info->cmd51_dst_boundary = 512;
 439                 lpc2000_info->cmd51_can_256b = 0;
 440                 lpc2000_info->cmd51_can_8192b = 1;
 441                 lpc2000_info->checksum_vector = 5;
 442         }
 443         else if (strcmp(CMD_ARGV[6], "lpc2000_v2") == 0)
 444         {
 445                 lpc2000_info->variant = lpc2000_v2;
 446                 lpc2000_info->cmd51_dst_boundary = 256;
 447                 lpc2000_info->cmd51_can_256b = 1;
 448                 lpc2000_info->cmd51_can_8192b = 0;
 449                 lpc2000_info->checksum_vector = 5;
 450         }
 451         else if (strcmp(CMD_ARGV[6], "lpc1700") == 0)
 452         {
 453                 lpc2000_info->variant = lpc1700;
 454                 lpc2000_info->cmd51_dst_boundary = 256;
 455                 lpc2000_info->cmd51_can_256b = 1;
 456                 lpc2000_info->cmd51_can_8192b = 0;
 457                 lpc2000_info->checksum_vector = 7;
 458         }
 459         else
 460         {
 461                 LOG_ERROR("unknown LPC2000 variant: %s", CMD_ARGV[6]);
 462                 free(lpc2000_info);
 463                 return ERROR_FLASH_BANK_INVALID;
 464         }
 465
 466         lpc2000_info->iap_working_area = NULL;
 467         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[7], lpc2000_info->cclk);
 468         lpc2000_info->calc_checksum = 0;
 469         lpc2000_build_sector_list(bank);
 470
 471         if (CMD_ARGC >= 9)
 472         {
 473                 if (strcmp(CMD_ARGV[8], "calc_checksum") == 0)
 474                         lpc2000_info->calc_checksum = 1;
 475         }
 476
 477         return ERROR_OK;
 478 }
 479
 480 static int lpc2000_erase(struct flash_bank *bank, int first, int last)
 481 {
 482         struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
 483         uint32_t param_table[5];
 484         uint32_t result_table[4];
 485         int status_code;
 486
 487         if (bank->target->state != TARGET_HALTED)
 488         {
 489                 LOG_ERROR("Target not halted");
 490                 return ERROR_TARGET_NOT_HALTED;
 491         }
 492
 493         param_table[0] = first;
 494         param_table[1] = last;
 495         param_table[2] = lpc2000_info->cclk;
 496
 497         /* Prepare sectors */
 498         status_code = lpc2000_iap_call(bank, 50, param_table, result_table);
 499         switch (status_code)
 500         {
 501                 case ERROR_FLASH_OPERATION_FAILED:
 502                         return ERROR_FLASH_OPERATION_FAILED;
 503                 case LPC2000_CMD_SUCCESS:
 504                         break;
 505                 case LPC2000_INVALID_SECTOR:
 506                         return ERROR_FLASH_SECTOR_INVALID;
 507                         break;
 508                 default:
 509                         LOG_WARNING("lpc2000 prepare sectors returned %i", status_code);
 510                         return ERROR_FLASH_OPERATION_FAILED;
 511         }
 512
 513         /* Erase sectors */
 514         status_code = lpc2000_iap_call(bank, 52, param_table, result_table);
 515         switch (status_code)
 516         {
 517                 case ERROR_FLASH_OPERATION_FAILED:
 518                         return ERROR_FLASH_OPERATION_FAILED;
 519                 case LPC2000_CMD_SUCCESS:
 520                         break;
 521                 case LPC2000_INVALID_SECTOR:
 522                         return ERROR_FLASH_SECTOR_INVALID;
 523                         break;
 524                 default:
 525                         LOG_WARNING("lpc2000 erase sectors returned %i", status_code);
 526                         return ERROR_FLASH_OPERATION_FAILED;
 527         }
 528
 529         return ERROR_OK;
 530 }
 531
 532 static int lpc2000_protect(struct flash_bank *bank, int set, int first, int last)
 533 {
 534         /* can't protect/unprotect on the lpc2000 */
 535         return ERROR_OK;
 536 }
 537
 538 static int lpc2000_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
 539 {
 540         struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
 541         struct target *target = bank->target;
 542         uint32_t dst_min_alignment;
 543         uint32_t bytes_remaining = count;
 544         uint32_t bytes_written = 0;
 545         int first_sector = 0;
 546         int last_sector = 0;
 547         uint32_t param_table[5];
 548         uint32_t result_table[4];
 549         int status_code;
 550         int i;
 551         struct working_area *download_area;
 552         int retval = ERROR_OK;
 553
 554         if (bank->target->state != TARGET_HALTED)
 555         {
 556                 LOG_ERROR("Target not halted");
 557                 return ERROR_TARGET_NOT_HALTED;
 558         }
 559
 560         if (offset + count > bank->size)
 561                 return ERROR_FLASH_DST_OUT_OF_BANK;
 562
 563         dst_min_alignment = lpc2000_info->cmd51_dst_boundary;
 564
 565         if (offset % dst_min_alignment)
 566         {
 567                 LOG_WARNING("offset 0x%" PRIx32 " breaks required alignment 0x%" PRIx32, offset, dst_min_alignment);
 568                 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
 569         }
 570
 571         for (i = 0; i < bank->num_sectors; i++)
 572         {
 573                 if (offset >= bank->sectors[i].offset)
 574                         first_sector = i;
 575                 if (offset + DIV_ROUND_UP(count, dst_min_alignment) * dst_min_alignment > bank->sectors[i].offset)
 576                         last_sector = i;
 577         }
 578
 579         LOG_DEBUG("first_sector: %i, last_sector: %i", first_sector, last_sector);
 580
 581         /* check if exception vectors should be flashed */
 582         if ((offset == 0) && (count >= 0x20) && lpc2000_info->calc_checksum)
 583         {
 584                 uint32_t checksum = 0;
 585                 int i;
 586                 for (i = 0; i < 8; i++)
 587                 {
 588                         LOG_DEBUG("Vector 0x%2.2x: 0x%8.8" PRIx32, i * 4, buf_get_u32(buffer + (i * 4), 0, 32));
 589                         if (i != lpc2000_info->checksum_vector)
 590                                 checksum += buf_get_u32(buffer + (i * 4), 0, 32);
 591                 }
 592                 checksum = 0 - checksum;
 593                 LOG_DEBUG("checksum: 0x%8.8" PRIx32, checksum);
 594
 595                 uint32_t original_value = buf_get_u32(buffer + (lpc2000_info->checksum_vector * 4), 0, 32);
 596                 if (original_value != checksum)
 597                 {
 598                         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 ").",
 599                                         original_value, checksum);
 600                         LOG_WARNING("To remove this warning modify build tools on developer PC to inject correct LPC vector checksum.");
 601                 }
 602
 603                 buf_set_u32(buffer + (lpc2000_info->checksum_vector * 4), 0, 32, checksum);
 604         }
 605
 606         /* allocate a working area */
 607         if (target_alloc_working_area(target, lpc2000_info->cmd51_max_buffer, &download_area) != ERROR_OK)
 608         {
 609                 LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
 610                 return ERROR_FLASH_OPERATION_FAILED;
 611         }
 612
 613         while (bytes_remaining > 0)
 614         {
 615                 uint32_t thisrun_bytes;
 616                 if (bytes_remaining >= lpc2000_info->cmd51_max_buffer)
 617                         thisrun_bytes = lpc2000_info->cmd51_max_buffer;
 618                 else if (bytes_remaining >= 1024)
 619                         thisrun_bytes = 1024;
 620                 else if ((bytes_remaining >= 512) || (!lpc2000_info->cmd51_can_256b))
 621                         thisrun_bytes = 512;
 622                 else
 623                         thisrun_bytes = 256;
 624
 625                 /* Prepare sectors */
 626                 param_table[0] = first_sector;
 627                 param_table[1] = last_sector;
 628                 status_code = lpc2000_iap_call(bank, 50, param_table, result_table);
 629                 switch (status_code)
 630                 {
 631                         case ERROR_FLASH_OPERATION_FAILED:
 632                                 retval = ERROR_FLASH_OPERATION_FAILED;
 633                                 break;
 634                         case LPC2000_CMD_SUCCESS:
 635                                 break;
 636                         case LPC2000_INVALID_SECTOR:
 637                                 retval = ERROR_FLASH_SECTOR_INVALID;
 638                                 break;
 639                         default:
 640                                 LOG_WARNING("lpc2000 prepare sectors returned %i", status_code);
 641                                 retval = ERROR_FLASH_OPERATION_FAILED;
 642                                 break;
 643                 }
 644
 645                 /* Exit if error occured */
 646                 if (retval != ERROR_OK)
 647                         break;
 648
 649                 if (bytes_remaining >= thisrun_bytes)
 650                 {
 651                         if ((retval = target_write_buffer(bank->target, download_area->address, thisrun_bytes, buffer + bytes_written)) != ERROR_OK)
 652                         {
 653                                 retval = ERROR_FLASH_OPERATION_FAILED;
 654                                 break;
 655                         }
 656                 }
 657                 else
 658                 {
 659                         uint8_t *last_buffer = malloc(thisrun_bytes);
 660                         memcpy(last_buffer, buffer + bytes_written, bytes_remaining);
 661                         memset(last_buffer + bytes_remaining, 0xff, thisrun_bytes - bytes_remaining);
 662                         target_write_buffer(bank->target, download_area->address, thisrun_bytes, last_buffer);
 663                         free(last_buffer);
 664                 }
 665
 666                 LOG_DEBUG("writing 0x%" PRIx32 " bytes to address 0x%" PRIx32 , thisrun_bytes, bank->base + offset + bytes_written);
 667
 668                 /* Write data */
 669                 param_table[0] = bank->base + offset + bytes_written;
 670                 param_table[1] = download_area->address;
 671                 param_table[2] = thisrun_bytes;
 672                 param_table[3] = lpc2000_info->cclk;
 673                 status_code = lpc2000_iap_call(bank, 51, param_table, result_table);
 674                 switch (status_code)
 675                 {
 676                         case ERROR_FLASH_OPERATION_FAILED:
 677                                 retval = ERROR_FLASH_OPERATION_FAILED;
 678                                 break;
 679                         case LPC2000_CMD_SUCCESS:
 680                                 break;
 681                         case LPC2000_INVALID_SECTOR:
 682                                 retval = ERROR_FLASH_SECTOR_INVALID;
 683                                 break;
 684                         default:
 685                                 LOG_WARNING("lpc2000 returned %i", status_code);
 686                                 retval = ERROR_FLASH_OPERATION_FAILED;
 687                                 break;
 688                 }
 689
 690                 /* Exit if error occured */
 691                 if (retval != ERROR_OK)
 692                         break;
 693
 694                 if (bytes_remaining > thisrun_bytes)
 695                         bytes_remaining -= thisrun_bytes;
 696                 else
 697                         bytes_remaining = 0;
 698                 bytes_written += thisrun_bytes;
 699         }
 700
 701         target_free_working_area(target, download_area);
 702
 703         return retval;
 704 }
 705
 706 static int lpc2000_probe(struct flash_bank *bank)
 707 {
 708         /* we can't probe on an lpc2000
 709          * if this is an lpc2xxx, it has the configured flash
 710          */
 711         return ERROR_OK;
 712 }
 713
 714 static int lpc2000_erase_check(struct flash_bank *bank)
 715 {
 716         if (bank->target->state != TARGET_HALTED)
 717         {
 718                 LOG_ERROR("Target not halted");
 719                 return ERROR_TARGET_NOT_HALTED;
 720         }
 721
 722         return lpc2000_iap_blank_check(bank, 0, bank->num_sectors - 1);
 723 }
 724
 725 static int lpc2000_protect_check(struct flash_bank *bank)
 726 {
 727         /* sectors are always protected */
 728         return ERROR_OK;
 729 }
 730
 731 static int lpc2000_info(struct flash_bank *bank, char *buf, int buf_size)
 732 {
 733         struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
 734
 735         snprintf(buf, buf_size, "lpc2000 flash driver variant: %i, clk: %" PRIi32 "kHz" , lpc2000_info->variant, lpc2000_info->cclk);
 736
 737         return ERROR_OK;
 738 }
 739
 740 COMMAND_HANDLER(lpc2000_handle_part_id_command)
 741 {
 742         uint32_t param_table[5];
 743         uint32_t result_table[4];
 744         int status_code;
 745
 746         if (CMD_ARGC < 1)
 747         {
 748                 return ERROR_COMMAND_SYNTAX_ERROR;
 749         }
 750
 751         struct flash_bank *bank;
 752         int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
 753         if (ERROR_OK != retval)
 754                 return retval;
 755
 756         if (bank->target->state != TARGET_HALTED)
 757         {
 758                 LOG_ERROR("Target not halted");
 759                 return ERROR_TARGET_NOT_HALTED;
 760         }
 761
 762         if ((status_code = lpc2000_iap_call(bank, 54, param_table, result_table)) != 0x0)
 763         {
 764                 if (status_code == ERROR_FLASH_OPERATION_FAILED)
 765                 {
 766                         command_print(CMD_CTX, "no sufficient working area specified, can't access LPC2000 IAP interface");
 767                         return ERROR_OK;
 768                 }
 769                 command_print(CMD_CTX, "lpc2000 IAP returned status code %i", status_code);
 770         }
 771         else
 772         {
 773                 command_print(CMD_CTX, "lpc2000 part id: 0x%8.8" PRIx32 , result_table[0]);
 774         }
 775
 776         return ERROR_OK;
 777 }
 778
 779 static const struct command_registration lpc2000_exec_command_handlers[] = {
 780         {
 781                 .name = "part_id",
 782                 .handler = &lpc2000_handle_part_id_command,
 783                 .mode = COMMAND_EXEC,
 784                 .help = "print part id of lpc2000 flash bank <num>",
 785         },
 786         COMMAND_REGISTRATION_DONE
 787 };
 788 static const struct command_registration lpc2000_command_handlers[] = {
 789         {
 790                 .name = "lpc2000",
 791                 .mode = COMMAND_ANY,
 792                 .help = "lpc2000 flash command group",
 793                 .chain = lpc2000_exec_command_handlers,
 794         },
 795         COMMAND_REGISTRATION_DONE
 796 };
 797
 798 struct flash_driver lpc2000_flash = {
 799                 .name = "lpc2000",
 800                 .commands = lpc2000_command_handlers,
 801                 .flash_bank_command = &lpc2000_flash_bank_command,
 802                 .erase = &lpc2000_erase,
 803                 .protect = &lpc2000_protect,
 804                 .write = &lpc2000_write,
 805                 .probe = &lpc2000_probe,
 806                 .auto_probe = &lpc2000_probe,
 807                 .erase_check = &lpc2000_erase_check,
 808                 .protect_check = &lpc2000_protect_check,
 809                 .info = &lpc2000_info,
 810         };
 811
 812