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   1 /***************************************************************************
   2  *   Copyright (C) 2011 by Mathias Kuester                                 *
   3  *   kesmtp@freenet.de                                                     *
   4  *                                                                         *
   5  *   Copyright (C) 2011 sleep(5) ltd                                       *
   6  *   tomas@sleepfive.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 "helper/binarybuffer.h"
  30
  31 struct kinetis_flash_bank {
  32         uint32_t nvm_start;
  33 };
  34
  35 static int kinetis_get_master_bank(struct flash_bank *bank,
  36         struct flash_bank **master_bank)
  37 {
  38         *master_bank = get_flash_bank_by_name_noprobe(bank->name);
  39         if (*master_bank == NULL) {
  40                 LOG_ERROR("master flash bank '%s' does not exist",
  41                         (char *)bank->driver_priv);
  42                 return ERROR_FLASH_OPERATION_FAILED;
  43         }
  44
  45         return ERROR_OK;
  46 }
  47
  48 static int kinetis_update_bank_info(struct flash_bank *bank)
  49 {
  50         int result;
  51         struct flash_bank *master_bank;
  52
  53         result = kinetis_get_master_bank(bank, &master_bank);
  54
  55         if (result != ERROR_OK)
  56                 return result;
  57
  58         /* update the info we do not have */
  59         bank->size = master_bank->size;
  60         bank->chip_width = master_bank->chip_width;
  61         bank->bus_width = master_bank->bus_width;
  62         bank->num_sectors = master_bank->num_sectors;
  63         bank->sectors = master_bank->sectors;
  64
  65         return ERROR_OK;
  66 }
  67
  68 FLASH_BANK_COMMAND_HANDLER(kinetis_flash_bank_command)
  69 {
  70         struct kinetis_flash_bank *bank_info;
  71
  72         if (CMD_ARGC < 6)
  73                 return ERROR_COMMAND_SYNTAX_ERROR;
  74
  75         LOG_INFO("add flash_bank kinetis %s", bank->name);
  76
  77         bank_info = malloc(sizeof(struct kinetis_flash_bank));
  78
  79         memset(bank_info, 0, sizeof(struct kinetis_flash_bank));
  80
  81         bank->driver_priv = bank_info;
  82
  83         return ERROR_OK;
  84 }
  85
  86 static int kinetis_protect(struct flash_bank *bank, int set, int first,
  87         int last)
  88 {
  89         int result;
  90         struct flash_bank *master_bank;
  91
  92         result = kinetis_get_master_bank(bank, &master_bank);
  93
  94         if (result != ERROR_OK)
  95                 return result;
  96
  97         LOG_WARNING("kinetis_protect not supported yet");
  98
  99         if (bank->target->state != TARGET_HALTED) {
 100                 LOG_ERROR("Target not halted");
 101                 return ERROR_TARGET_NOT_HALTED;
 102         }
 103
 104         return ERROR_OK;
 105 }
 106
 107 static int kinetis_protect_check(struct flash_bank *bank)
 108 {
 109         int result;
 110         struct flash_bank *master_bank;
 111         uint8_t buffer[4];
 112         uint32_t fprot, psize, psec;
 113         int i, b;
 114
 115         if (bank->target->state != TARGET_HALTED) {
 116                 LOG_ERROR("Target not halted");
 117                 return ERROR_TARGET_NOT_HALTED;
 118         }
 119
 120         result = kinetis_get_master_bank(bank, &master_bank);
 121
 122         if (result != ERROR_OK)
 123                 return result;
 124
 125         /* read protection register FTFL_FPROT */
 126         result = target_read_memory(bank->target, 0x40020010, 1, 4, buffer);
 127
 128         if (result != ERROR_OK)
 129                 return result;
 130
 131         fprot = target_buffer_get_u32(bank->target, buffer);
 132
 133         /* every bit protect 1/32 of the full flash */
 134         psize = bank->size / 32;
 135         psec = 0;
 136         b = 0;
 137
 138         for (i = 0; i < bank->num_sectors; i++) {
 139                 if ((fprot >> b) & 1)
 140                         bank->sectors[i].is_protected = 0;
 141                 else
 142                         bank->sectors[i].is_protected = 1;
 143
 144                 psec += bank->sectors[i].size;
 145
 146                 if (psec >= psize) {
 147                         psec = 0;
 148                         b++;
 149                 }
 150         }
 151
 152         return ERROR_OK;
 153 }
 154
 155 static int kinetis_ftfl_command(struct flash_bank *bank, uint32_t w0,
 156         uint32_t w1, uint32_t w2)
 157 {
 158         uint8_t buffer[12];
 159         int result, i;
 160
 161         /* wait for done */
 162         for (i = 0; i < 50; i++) {
 163                 result =
 164                         target_read_memory(bank->target, 0x40020000, 1, 1, buffer);
 165
 166                 if (result != ERROR_OK)
 167                         return result;
 168
 169                 if (buffer[0] & 0x80)
 170                         break;
 171
 172                 buffer[0] = 0x00;
 173         }
 174
 175         if (buffer[0] != 0x80) {
 176                 /* reset error flags */
 177                 buffer[0] = 0x30;
 178                 result =
 179                         target_write_memory(bank->target, 0x40020000, 1, 1, buffer);
 180                 if (result != ERROR_OK)
 181                         return result;
 182         }
 183
 184         target_buffer_set_u32(bank->target, buffer, w0);
 185         target_buffer_set_u32(bank->target, buffer + 4, w1);
 186         target_buffer_set_u32(bank->target, buffer + 8, w2);
 187
 188         result = target_write_memory(bank->target, 0x40020004, 4, 3, buffer);
 189
 190         if (result != ERROR_OK)
 191                 return result;
 192
 193         /* start command */
 194         buffer[0] = 0x80;
 195         result = target_write_memory(bank->target, 0x40020000, 1, 1, buffer);
 196         if (result != ERROR_OK)
 197                 return result;
 198
 199         /* wait for done */
 200         for (i = 0; i < 50; i++) {
 201                 result =
 202                         target_read_memory(bank->target, 0x40020000, 1, 1, buffer);
 203
 204                 if (result != ERROR_OK)
 205                         return result;
 206
 207                 if (buffer[0] & 0x80)
 208                         break;
 209
 210                 buffer[0] = 0x00;
 211         }
 212
 213         if (buffer[0] != 0x80) {
 214                 LOG_ERROR
 215                         ("ftfl command failed FSTAT: %02X W0: %08X W1: %08X W2: %08X",
 216                         buffer[0], w0, w1, w2);
 217
 218                 return ERROR_FLASH_OPERATION_FAILED;
 219         }
 220
 221         return ERROR_OK;
 222 }
 223
 224 static int kinetis_erase(struct flash_bank *bank, int first, int last)
 225 {
 226         struct flash_bank *master_bank;
 227         int result, i;
 228         uint32_t w0 = 0, w1 = 0, w2 = 0;
 229
 230         if (bank->target->state != TARGET_HALTED) {
 231                 LOG_ERROR("Target not halted");
 232                 return ERROR_TARGET_NOT_HALTED;
 233         }
 234
 235         result = kinetis_get_master_bank(bank, &master_bank);
 236
 237         if (result != ERROR_OK)
 238                 return result;
 239
 240         if ((first > bank->num_sectors) || (last > bank->num_sectors))
 241                 return ERROR_FLASH_OPERATION_FAILED;
 242
 243         for (i = first; i <= last; i++) {
 244                 /* set command and sector address */
 245                 w0 = (0x09 << 24) | bank->sectors[i].offset;
 246
 247                 result = kinetis_ftfl_command(bank, w0, w1, w2);
 248
 249                 if (result != ERROR_OK) {
 250                         LOG_WARNING("erase sector %d failed", i);
 251                         return ERROR_FLASH_OPERATION_FAILED;
 252                 }
 253
 254                 bank->sectors[i].is_erased = 1;
 255         }
 256
 257         if (first == 0) {
 258                 LOG_WARNING
 259                         ("flash configuration field erased, please reset the device");
 260         }
 261
 262         return ERROR_OK;
 263 }
 264
 265 static int kinetis_write(struct flash_bank *bank, uint8_t *buffer,
 266         uint32_t offset, uint32_t count)
 267 {
 268         struct flash_bank *master_bank;
 269         unsigned int i, result, fallback = 0, nvm = 0;
 270         uint8_t buf[8];
 271         uint32_t wc, w0 = 0, w1 = 0, w2 = 0;
 272         struct kinetis_flash_bank *kbank = (struct kinetis_flash_bank *)
 273                 bank->driver_priv;
 274
 275         if (bank->target->state != TARGET_HALTED) {
 276                 LOG_ERROR("Target not halted");
 277                 return ERROR_TARGET_NOT_HALTED;
 278         }
 279
 280         result = kinetis_get_master_bank(bank, &master_bank);
 281
 282         if (result != ERROR_OK)
 283                 return result;
 284
 285         if (offset >= kbank->nvm_start)
 286                 nvm = 1;
 287
 288         if (!nvm && (offset + count) > kbank->nvm_start) {
 289                 /* we could flash this in two goes, but if the segment
 290                    spans across the pflash/nvm boundary, something is probably
 291                    not right.
 292                 */
 293                 LOG_ERROR("Segment spans NVM boundary");
 294                 return ERROR_FLASH_DST_OUT_OF_BANK;
 295         }
 296
 297         if (nvm) {
 298                 LOG_DEBUG("flash write into NVM @%08X", offset);
 299
 300                 /* make flex ram available */
 301                 w0 = (0x81 << 24) | 0x00ff0000;
 302
 303                 result = kinetis_ftfl_command(bank, w0, w1, w2);
 304
 305                 if (result != ERROR_OK)
 306                         return ERROR_FLASH_OPERATION_FAILED;
 307
 308                 /* check if ram ready */
 309                 result = target_read_memory(bank->target, 0x40020001, 1, 1, buf);
 310
 311                 if (result != ERROR_OK)
 312                         return result;
 313
 314                 if (!(buf[0] & (1 << 1))) {
 315                         /* fallback to longword write */
 316                         fallback = 1;
 317
 318                         LOG_WARNING("ram not ready, fallback to slow longword write (FCNFG: %02X)",
 319                                 buf[0]);
 320                 }
 321         } else {
 322                 LOG_DEBUG("flash write into PFLASH @08%X", offset);
 323         }
 324
 325
 326         /* program section command */
 327         if (fallback == 0) {
 328                 for (i = 0; i < count; i += (2 * 1024)) {
 329                         wc = 512;
 330
 331                         if ((count - i) < (2 * 1024)) {
 332                                 wc = count - i;
 333                                 wc /= 4;
 334                         }
 335
 336                         LOG_DEBUG("write section @ %08X with length %d",
 337                                 offset + i, wc * 4);
 338
 339                         /* write data to flexram */
 340                         result =
 341                                 target_write_memory(bank->target, 0x14000000, 4, wc,
 342                                         buffer + i);
 343
 344                         if (result != ERROR_OK) {
 345                                 LOG_ERROR("target_write_memory failed");
 346
 347                                 return result;
 348                         }
 349
 350                         /* execute section command */
 351                         w0 = (0x0b << 24) | (offset + i);
 352                         w1 = (256 << 16);
 353
 354                         result = kinetis_ftfl_command(bank, w0, w1, w2);
 355
 356                         if (result != ERROR_OK)
 357                                 return ERROR_FLASH_OPERATION_FAILED;
 358                 }
 359         }
 360         /* program longword command */
 361         else {
 362                 for (i = 0; i < count; i += 4) {
 363                         LOG_DEBUG("write longword @ %08X", offset + i);
 364
 365                         w0 = (0x06 << 24) | (offset + i);
 366                         w1 = buf_get_u32(buffer + offset + i, 0, 32);
 367
 368                         result = kinetis_ftfl_command(bank, w0, w1, w2);
 369
 370                         if (result != ERROR_OK)
 371                                 return ERROR_FLASH_OPERATION_FAILED;
 372                 }
 373         }
 374
 375         return ERROR_OK;
 376 }
 377
 378 static int kinetis_probe(struct flash_bank *bank)
 379 {
 380         struct flash_bank *master_bank;
 381         int result, i;
 382         uint8_t buf[4];
 383         uint32_t sim_sdid, sim_fcfg1, sim_fcfg2, offset = 0;
 384         uint32_t nvm_size, pf_size, ee_size;
 385
 386         if (bank->target->state != TARGET_HALTED) {
 387                 LOG_ERROR("Target not halted");
 388                 return ERROR_TARGET_NOT_HALTED;
 389         }
 390
 391         result = kinetis_get_master_bank(bank, &master_bank);
 392
 393         if (result != ERROR_OK)
 394                 return result;
 395
 396         result = target_read_memory(bank->target, 0x40048024, 1, 4, buf);
 397         if (result != ERROR_OK)
 398                 return result;
 399         sim_sdid = target_buffer_get_u32(bank->target, buf);
 400         result = target_read_memory(bank->target, 0x4004804c, 1, 4, buf);
 401         if (result != ERROR_OK)
 402                 return result;
 403         sim_fcfg1 = target_buffer_get_u32(bank->target, buf);
 404         result = target_read_memory(bank->target, 0x40048050, 1, 4, buf);
 405         if (result != ERROR_OK)
 406                 return result;
 407         sim_fcfg2 = target_buffer_get_u32(bank->target, buf);
 408
 409         LOG_DEBUG("SDID: %08X FCFG1: %08X FCFG2: %08X", sim_sdid, sim_fcfg1,
 410                 sim_fcfg2);
 411
 412         switch ((sim_fcfg1 >> 28) & 0x0f) {
 413                 case 0x07:
 414                         nvm_size = 128 * 1024;
 415                         break;
 416                 case 0x09:
 417                 case 0x0f:
 418                         nvm_size = 256 * 1024;
 419                         break;
 420                 default:
 421                         nvm_size = 0;
 422                         break;
 423         }
 424
 425         switch ((sim_fcfg1 >> 24) & 0x0f) {
 426                 case 0x07:
 427                         pf_size = 128 * 1024;
 428                         break;
 429                 case 0x09:
 430                         pf_size = 256 * 1024;
 431                         break;
 432                 case 0x0b:
 433                 case 0x0f:
 434                         pf_size = 512 * 1024;
 435                         break;
 436                 default:
 437                         pf_size = 0;
 438                         break;
 439         }
 440
 441         switch ((sim_fcfg1 >> 16) & 0x0f) {
 442                 case 0x02:
 443                         ee_size = 4 * 1024;
 444                         break;
 445                 case 0x03:
 446                         ee_size = 2 * 1024;
 447                         break;
 448                 case 0x04:
 449                         ee_size = 1 * 1024;
 450                         break;
 451                 case 0x05:
 452                         ee_size = 512;
 453                         break;
 454                 case 0x06:
 455                         ee_size = 256;
 456                         break;
 457                 case 0x07:
 458                         ee_size = 128;
 459                         break;
 460                 case 0x08:
 461                         ee_size = 64;
 462                         break;
 463                 case 0x09:
 464                         ee_size = 32;
 465                         break;
 466                 default:
 467                         ee_size = 0;
 468                         break;
 469         }
 470
 471         ((struct kinetis_flash_bank *) bank->driver_priv)->nvm_start =
 472                 pf_size - nvm_size;
 473
 474         LOG_DEBUG("NVM: %d PF: %d EE: %d BL1: %d", nvm_size, pf_size, ee_size,
 475                 (sim_fcfg2 >> 23) & 1);
 476
 477         if (pf_size != bank->size) {
 478                 LOG_WARNING("flash size is different %d != %d", pf_size,
 479                         bank->size);
 480         }
 481
 482         bank->num_sectors = bank->size / (2 * 1024);
 483         assert(bank->num_sectors > 0);
 484         bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
 485
 486         for (i = 0; i < bank->num_sectors; i++) {
 487                 bank->sectors[i].offset = offset;
 488                 bank->sectors[i].size = 2 * 1024;
 489                 offset += bank->sectors[i].size;
 490                 bank->sectors[i].is_erased = -1;
 491                 bank->sectors[i].is_protected = 1;
 492         }
 493
 494         /* update the info we do not have */
 495         return kinetis_update_bank_info(bank);
 496 }
 497
 498 static int kinetis_auto_probe(struct flash_bank *bank)
 499 {
 500         return kinetis_probe(bank);
 501 }
 502
 503 static int kinetis_info(struct flash_bank *bank, char *buf, int buf_size)
 504 {
 505         int result;
 506         struct flash_bank *master_bank;
 507
 508         result = kinetis_get_master_bank(bank, &master_bank);
 509
 510         if (result != ERROR_OK)
 511                 return result;
 512
 513         snprintf(buf, buf_size,
 514                 "%s driver for flash bank %s at 0x%8.8" PRIx32 "",
 515                 bank->driver->name, master_bank->name, master_bank->base);
 516
 517         return ERROR_OK;
 518 }
 519
 520 static int kinetis_blank_check(struct flash_bank *bank)
 521 {
 522         int result;
 523         struct flash_bank *master_bank;
 524
 525         LOG_WARNING("kinetis_blank_check not supported yet");
 526
 527         if (bank->target->state != TARGET_HALTED) {
 528                 LOG_ERROR("Target not halted");
 529                 return ERROR_TARGET_NOT_HALTED;
 530         }
 531
 532         result = kinetis_get_master_bank(bank, &master_bank);
 533
 534         if (result != ERROR_OK)
 535                 return result;
 536
 537         return ERROR_OK;
 538 }
 539
 540 static int kinetis_flash_read(struct flash_bank *bank,
 541         uint8_t *buffer, uint32_t offset, uint32_t count)
 542 {
 543         int result;
 544         struct flash_bank *master_bank;
 545
 546         LOG_WARNING("kinetis_flash_read not supported yet");
 547
 548         if (bank->target->state != TARGET_HALTED) {
 549                 LOG_ERROR("Target not halted");
 550                 return ERROR_TARGET_NOT_HALTED;
 551         }
 552
 553         result = kinetis_get_master_bank(bank, &master_bank);
 554
 555         if (result != ERROR_OK)
 556                 return result;
 557
 558         return ERROR_OK;
 559 }
 560
 561 struct flash_driver kinetis_flash = {
 562         .name = "kinetis",
 563         .flash_bank_command = kinetis_flash_bank_command,
 564         .erase = kinetis_erase,
 565         .protect = kinetis_protect,
 566         .write = kinetis_write,
 567         .read = kinetis_flash_read,
 568         .probe = kinetis_probe,
 569         .auto_probe = kinetis_auto_probe,
 570         .erase_check = kinetis_blank_check,
 571         .protect_check = kinetis_protect_check,
 572         .info = kinetis_info,
 573 };