git.gag.com Git - fw/openocd/blob - src/flash/nor/str9x.c

   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2008 by Spencer Oliver                                  *
   6  *   spen@spen-soft.co.uk                                                  *
   7  *
   8  *   Copyright (C) 2008 by Oyvind Harboe                                   *
   9  *   oyvind.harboe@zylin.com                                               *
  10  *                                                                         *
  11  *   This program is free software; you can redistribute it and/or modify  *
  12  *   it under the terms of the GNU General Public License as published by  *
  13  *   the Free Software Foundation; either version 2 of the License, or     *
  14  *   (at your option) any later version.                                   *
  15  *                                                                         *
  16  *   This program is distributed in the hope that it will be useful,       *
  17  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  18  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  19  *   GNU General Public License for more details.                          *
  20  *                                                                         *
  21  *   You should have received a copy of the GNU General Public License     *
  22  *   along with this program; if not, write to the                         *
  23  *   Free Software Foundation, Inc.,                                       *
  24  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  25  ***************************************************************************/
  26 #ifdef HAVE_CONFIG_H
  27 #include "config.h"
  28 #endif
  29
  30 #include "imp.h"
  31 #include "str9x.h"
  32 #include <target/arm966e.h>
  33 #include <target/algorithm.h>
  34
  35
  36 static uint32_t bank1start = 0x00080000;
  37
  38 static int str9x_build_block_list(struct flash_bank *bank)
  39 {
  40         struct str9x_flash_bank *str9x_info = bank->driver_priv;
  41
  42         int i;
  43         int num_sectors;
  44         int b0_sectors = 0, b1_sectors = 0;
  45         uint32_t offset = 0;
  46
  47         /* set if we have large flash str9 */
  48         str9x_info->variant = 0;
  49         str9x_info->bank1 = 0;
  50
  51         switch (bank->size)
  52         {
  53                 case (256 * 1024):
  54                         b0_sectors = 4;
  55                         break;
  56                 case (512 * 1024):
  57                         b0_sectors = 8;
  58                         break;
  59                 case (1024 * 1024):
  60                         bank1start = 0x00100000;
  61                         str9x_info->variant = 1;
  62                         b0_sectors = 16;
  63                         break;
  64                 case (2048 * 1024):
  65                         bank1start = 0x00200000;
  66                         str9x_info->variant = 1;
  67                         b0_sectors = 32;
  68                         break;
  69                 case (128 * 1024):
  70                         str9x_info->variant = 1;
  71                         str9x_info->bank1 = 1;
  72                         b1_sectors = 8;
  73                         bank1start = bank->base;
  74                         break;
  75                 case (32 * 1024):
  76                         str9x_info->bank1 = 1;
  77                         b1_sectors = 4;
  78                         bank1start = bank->base;
  79                         break;
  80                 default:
  81                         LOG_ERROR("BUG: unknown bank->size encountered");
  82                         exit(-1);
  83         }
  84
  85         num_sectors = b0_sectors + b1_sectors;
  86
  87         bank->num_sectors = num_sectors;
  88         bank->sectors = malloc(sizeof(struct flash_sector) * num_sectors);
  89         str9x_info->sector_bits = malloc(sizeof(uint32_t) * num_sectors);
  90
  91         num_sectors = 0;
  92
  93         for (i = 0; i < b0_sectors; i++)
  94         {
  95                 bank->sectors[num_sectors].offset = offset;
  96                 bank->sectors[num_sectors].size = 0x10000;
  97                 offset += bank->sectors[i].size;
  98                 bank->sectors[num_sectors].is_erased = -1;
  99                 bank->sectors[num_sectors].is_protected = 1;
 100                 str9x_info->sector_bits[num_sectors++] = (1 << i);
 101         }
 102
 103         for (i = 0; i < b1_sectors; i++)
 104         {
 105                 bank->sectors[num_sectors].offset = offset;
 106                 bank->sectors[num_sectors].size = str9x_info->variant == 0 ? 0x2000 : 0x4000;
 107                 offset += bank->sectors[i].size;
 108                 bank->sectors[num_sectors].is_erased = -1;
 109                 bank->sectors[num_sectors].is_protected = 1;
 110                 if (str9x_info->variant)
 111                         str9x_info->sector_bits[num_sectors++] = (1 << i);
 112                 else
 113                         str9x_info->sector_bits[num_sectors++] = (1 << (i + 8));
 114         }
 115
 116         return ERROR_OK;
 117 }
 118
 119 /* flash bank str9x <base> <size> 0 0 <target#>
 120  */
 121 FLASH_BANK_COMMAND_HANDLER(str9x_flash_bank_command)
 122 {
 123         struct str9x_flash_bank *str9x_info;
 124
 125         if (CMD_ARGC < 6)
 126         {
 127                 LOG_WARNING("incomplete flash_bank str9x configuration");
 128                 return ERROR_FLASH_BANK_INVALID;
 129         }
 130
 131         str9x_info = malloc(sizeof(struct str9x_flash_bank));
 132         bank->driver_priv = str9x_info;
 133
 134         str9x_build_block_list(bank);
 135
 136         str9x_info->write_algorithm = NULL;
 137
 138         return ERROR_OK;
 139 }
 140
 141 static int str9x_protect_check(struct flash_bank *bank)
 142 {
 143         int retval;
 144         struct str9x_flash_bank *str9x_info = bank->driver_priv;
 145         struct target *target = bank->target;
 146
 147         int i;
 148         uint32_t adr;
 149         uint32_t status = 0;
 150         uint16_t hstatus = 0;
 151
 152         if (bank->target->state != TARGET_HALTED)
 153         {
 154                 LOG_ERROR("Target not halted");
 155                 return ERROR_TARGET_NOT_HALTED;
 156         }
 157
 158         /* read level one protection */
 159
 160         if (str9x_info->variant)
 161         {
 162                 if (str9x_info->bank1)
 163                 {
 164                         adr = bank1start + 0x18;
 165                         if ((retval = target_write_u16(target, adr, 0x90)) != ERROR_OK)
 166                         {
 167                                 return retval;
 168                         }
 169                         if ((retval = target_read_u16(target, adr, &hstatus)) != ERROR_OK)
 170                         {
 171                                 return retval;
 172                         }
 173                         status = hstatus;
 174                 }
 175                 else
 176                 {
 177                         adr = bank1start + 0x14;
 178                         if ((retval = target_write_u16(target, adr, 0x90)) != ERROR_OK)
 179                         {
 180                                 return retval;
 181                         }
 182                         if ((retval = target_read_u32(target, adr, &status)) != ERROR_OK)
 183                         {
 184                                 return retval;
 185                         }
 186                 }
 187         }
 188         else
 189         {
 190                 adr = bank1start + 0x10;
 191                 if ((retval = target_write_u16(target, adr, 0x90)) != ERROR_OK)
 192                 {
 193                         return retval;
 194                 }
 195                 if ((retval = target_read_u16(target, adr, &hstatus)) != ERROR_OK)
 196                 {
 197                         return retval;
 198                 }
 199                 status = hstatus;
 200         }
 201
 202         /* read array command */
 203         if ((retval = target_write_u16(target, adr, 0xFF)) != ERROR_OK)
 204         {
 205                 return retval;
 206         }
 207
 208         for (i = 0; i < bank->num_sectors; i++)
 209         {
 210                 if (status & str9x_info->sector_bits[i])
 211                         bank->sectors[i].is_protected = 1;
 212                 else
 213                         bank->sectors[i].is_protected = 0;
 214         }
 215
 216         return ERROR_OK;
 217 }
 218
 219 static int str9x_erase(struct flash_bank *bank, int first, int last)
 220 {
 221         struct target *target = bank->target;
 222         int i;
 223         uint32_t adr;
 224         uint8_t status;
 225         uint8_t erase_cmd;
 226
 227         if (bank->target->state != TARGET_HALTED)
 228         {
 229                 LOG_ERROR("Target not halted");
 230                 return ERROR_TARGET_NOT_HALTED;
 231         }
 232
 233         /*A slower but stable way of erasing*/
 234         /* Erase sector command */
 235         erase_cmd = 0x20;
 236
 237         for (i = first; i <= last; i++)
 238         {
 239                 int retval;
 240                 adr = bank->base + bank->sectors[i].offset;
 241
 242                 /* erase sectors */
 243                 if ((retval = target_write_u16(target, adr, erase_cmd)) != ERROR_OK)
 244                 {
 245                         return retval;
 246                 }
 247                 if ((retval = target_write_u16(target, adr, 0xD0)) != ERROR_OK)
 248                 {
 249                         return retval;
 250                 }
 251
 252                 /* get status */
 253                 if ((retval = target_write_u16(target, adr, 0x70)) != ERROR_OK)
 254                 {
 255                         return retval;
 256                 }
 257
 258                 int timeout;
 259                 for (timeout = 0; timeout < 1000; timeout++) {
 260                         if ((retval = target_read_u8(target, adr, &status)) != ERROR_OK)
 261                         {
 262                                 return retval;
 263                         }
 264                         if (status & 0x80)
 265                                 break;
 266                         alive_sleep(1);
 267                 }
 268                 if (timeout == 1000)
 269                 {
 270                         LOG_ERROR("erase timed out");
 271                         return ERROR_FAIL;
 272                 }
 273
 274                 /* clear status, also clear read array */
 275                 if ((retval = target_write_u16(target, adr, 0x50)) != ERROR_OK)
 276                 {
 277                         return retval;
 278                 }
 279
 280                 /* read array command */
 281                 if ((retval = target_write_u16(target, adr, 0xFF)) != ERROR_OK)
 282                 {
 283                         return retval;
 284                 }
 285
 286                 if (status & 0x22)
 287                 {
 288                         LOG_ERROR("error erasing flash bank, status: 0x%x", status);
 289                         return ERROR_FLASH_OPERATION_FAILED;
 290                 }
 291         }
 292
 293         for (i = first; i <= last; i++)
 294                 bank->sectors[i].is_erased = 1;
 295
 296         return ERROR_OK;
 297 }
 298
 299 static int str9x_protect(struct flash_bank *bank,
 300                 int set, int first, int last)
 301 {
 302         struct target *target = bank->target;
 303         int i;
 304         uint32_t adr;
 305         uint8_t status;
 306
 307         if (bank->target->state != TARGET_HALTED)
 308         {
 309                 LOG_ERROR("Target not halted");
 310                 return ERROR_TARGET_NOT_HALTED;
 311         }
 312
 313         for (i = first; i <= last; i++)
 314         {
 315                 /* Level One Protection */
 316
 317                 adr = bank->base + bank->sectors[i].offset;
 318
 319                 target_write_u16(target, adr, 0x60);
 320                 if (set)
 321                         target_write_u16(target, adr, 0x01);
 322                 else
 323                         target_write_u16(target, adr, 0xD0);
 324
 325                 /* query status */
 326                 target_read_u8(target, adr, &status);
 327
 328                 /* clear status, also clear read array */
 329                 target_write_u16(target, adr, 0x50);
 330
 331                 /* read array command */
 332                 target_write_u16(target, adr, 0xFF);
 333         }
 334
 335         return ERROR_OK;
 336 }
 337
 338 static int str9x_write_block(struct flash_bank *bank,
 339                 uint8_t *buffer, uint32_t offset, uint32_t count)
 340 {
 341         struct str9x_flash_bank *str9x_info = bank->driver_priv;
 342         struct target *target = bank->target;
 343         uint32_t buffer_size = 8192;
 344         struct working_area *source;
 345         uint32_t address = bank->base + offset;
 346         struct reg_param reg_params[4];
 347         struct arm_algorithm armv4_5_info;
 348         int retval = ERROR_OK;
 349
 350         uint32_t str9x_flash_write_code[] = {
 351                                         /* write:                               */
 352                 0xe3c14003,     /*      bic     r4, r1, #3              */
 353                 0xe3a03040,     /*      mov     r3, #0x40               */
 354                 0xe1c430b0,     /*      strh r3, [r4, #0]       */
 355                 0xe0d030b2,     /*      ldrh r3, [r0], #2       */
 356                 0xe0c130b2,     /*      strh r3, [r1], #2       */
 357                 0xe3a03070,     /*      mov r3, #0x70           */
 358                 0xe1c430b0,     /*      strh r3, [r4, #0]       */
 359                                         /* busy:                                */
 360                 0xe5d43000,     /*      ldrb r3, [r4, #0]       */
 361                 0xe3130080,     /*      tst r3, #0x80           */
 362                 0x0afffffc,     /*      beq busy                        */
 363                 0xe3a05050,     /*      mov     r5, #0x50               */
 364                 0xe1c450b0,     /*      strh r5, [r4, #0]       */
 365                 0xe3a050ff,     /*      mov     r5, #0xFF               */
 366                 0xe1c450b0,     /*      strh r5, [r4, #0]       */
 367                 0xe3130012,     /*      tst     r3, #0x12               */
 368                 0x1a000001,     /*      bne exit                        */
 369                 0xe2522001,     /*      subs r2, r2, #1         */
 370                 0x1affffed,     /*      bne write                       */
 371                                         /* exit:                                */
 372                 0xeafffffe,     /*      b exit                          */
 373         };
 374
 375         /* flash write code */
 376         if (target_alloc_working_area(target, 4 * 19, &str9x_info->write_algorithm) != ERROR_OK)
 377         {
 378                 LOG_WARNING("no working area available, can't do block memory writes");
 379                 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
 380         };
 381
 382         target_write_buffer(target, str9x_info->write_algorithm->address, 19 * 4, (uint8_t*)str9x_flash_write_code);
 383
 384         /* memory buffer */
 385         while (target_alloc_working_area(target, buffer_size, &source) != ERROR_OK)
 386         {
 387                 buffer_size /= 2;
 388                 if (buffer_size <= 256)
 389                 {
 390                         /* if we already allocated the writing code, but failed to get a buffer, free the algorithm */
 391                         if (str9x_info->write_algorithm)
 392                                 target_free_working_area(target, str9x_info->write_algorithm);
 393
 394                         LOG_WARNING("no large enough working area available, can't do block memory writes");
 395                         return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
 396                 }
 397         }
 398
 399         armv4_5_info.common_magic = ARM_COMMON_MAGIC;
 400         armv4_5_info.core_mode = ARM_MODE_SVC;
 401         armv4_5_info.core_state = ARM_STATE_ARM;
 402
 403         init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
 404         init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
 405         init_reg_param(&reg_params[2], "r2", 32, PARAM_OUT);
 406         init_reg_param(&reg_params[3], "r3", 32, PARAM_IN);
 407
 408         while (count > 0)
 409         {
 410                 uint32_t thisrun_count = (count > (buffer_size / 2)) ? (buffer_size / 2) : count;
 411
 412                 target_write_buffer(target, source->address, thisrun_count * 2, buffer);
 413
 414                 buf_set_u32(reg_params[0].value, 0, 32, source->address);
 415                 buf_set_u32(reg_params[1].value, 0, 32, address);
 416                 buf_set_u32(reg_params[2].value, 0, 32, thisrun_count);
 417
 418                 if ((retval = target_run_algorithm(target, 0, NULL, 4, reg_params, str9x_info->write_algorithm->address, str9x_info->write_algorithm->address + (18 * 4), 10000, &armv4_5_info)) != ERROR_OK)
 419                 {
 420                         LOG_ERROR("error executing str9x flash write algorithm");
 421                         retval = ERROR_FLASH_OPERATION_FAILED;
 422                         break;
 423                 }
 424
 425                 if (buf_get_u32(reg_params[3].value, 0, 32) != 0x80)
 426                 {
 427                         retval = ERROR_FLASH_OPERATION_FAILED;
 428                         break;
 429                 }
 430
 431                 buffer += thisrun_count * 2;
 432                 address += thisrun_count * 2;
 433                 count -= thisrun_count;
 434         }
 435
 436         target_free_working_area(target, source);
 437         target_free_working_area(target, str9x_info->write_algorithm);
 438
 439         destroy_reg_param(&reg_params[0]);
 440         destroy_reg_param(&reg_params[1]);
 441         destroy_reg_param(&reg_params[2]);
 442         destroy_reg_param(&reg_params[3]);
 443
 444         return retval;
 445 }
 446
 447 static int str9x_write(struct flash_bank *bank,
 448                 uint8_t *buffer, uint32_t offset, uint32_t count)
 449 {
 450         struct target *target = bank->target;
 451         uint32_t words_remaining = (count / 2);
 452         uint32_t bytes_remaining = (count & 0x00000001);
 453         uint32_t address = bank->base + offset;
 454         uint32_t bytes_written = 0;
 455         uint8_t status;
 456         int retval;
 457         uint32_t check_address = offset;
 458         uint32_t bank_adr;
 459         int i;
 460
 461         if (bank->target->state != TARGET_HALTED)
 462         {
 463                 LOG_ERROR("Target not halted");
 464                 return ERROR_TARGET_NOT_HALTED;
 465         }
 466
 467         if (offset & 0x1)
 468         {
 469                 LOG_WARNING("offset 0x%" PRIx32 " breaks required 2-byte alignment", offset);
 470                 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
 471         }
 472
 473         for (i = 0; i < bank->num_sectors; i++)
 474         {
 475                 uint32_t sec_start = bank->sectors[i].offset;
 476                 uint32_t sec_end = sec_start + bank->sectors[i].size;
 477
 478                 /* check if destination falls within the current sector */
 479                 if ((check_address >= sec_start) && (check_address < sec_end))
 480                 {
 481                         /* check if destination ends in the current sector */
 482                         if (offset + count < sec_end)
 483                                 check_address = offset + count;
 484                         else
 485                                 check_address = sec_end;
 486                 }
 487         }
 488
 489         if (check_address != offset + count)
 490                 return ERROR_FLASH_DST_OUT_OF_BANK;
 491
 492         /* multiple half words (2-byte) to be programmed? */
 493         if (words_remaining > 0)
 494         {
 495                 /* try using a block write */
 496                 if ((retval = str9x_write_block(bank, buffer, offset, words_remaining)) != ERROR_OK)
 497                 {
 498                         if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
 499                         {
 500                                 /* if block write failed (no sufficient working area),
 501                                  * we use normal (slow) single dword accesses */
 502                                 LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
 503                         }
 504                         else if (retval == ERROR_FLASH_OPERATION_FAILED)
 505                         {
 506                                 LOG_ERROR("flash writing failed with error code: 0x%x", retval);
 507                                 return ERROR_FLASH_OPERATION_FAILED;
 508                         }
 509                 }
 510                 else
 511                 {
 512                         buffer += words_remaining * 2;
 513                         address += words_remaining * 2;
 514                         words_remaining = 0;
 515                 }
 516         }
 517
 518         while (words_remaining > 0)
 519         {
 520                 bank_adr = address & ~0x03;
 521
 522                 /* write data command */
 523                 target_write_u16(target, bank_adr, 0x40);
 524                 target_write_memory(target, address, 2, 1, buffer + bytes_written);
 525
 526                 /* get status command */
 527                 target_write_u16(target, bank_adr, 0x70);
 528
 529                 int timeout;
 530                 for (timeout = 0; timeout < 1000; timeout++)
 531                 {
 532                         target_read_u8(target, bank_adr, &status);
 533                         if (status & 0x80)
 534                                 break;
 535                         alive_sleep(1);
 536                 }
 537                 if (timeout == 1000)
 538                 {
 539                         LOG_ERROR("write timed out");
 540                         return ERROR_FAIL;
 541                 }
 542
 543                 /* clear status reg and read array */
 544                 target_write_u16(target, bank_adr, 0x50);
 545                 target_write_u16(target, bank_adr, 0xFF);
 546
 547                 if (status & 0x10)
 548                         return ERROR_FLASH_OPERATION_FAILED;
 549                 else if (status & 0x02)
 550                         return ERROR_FLASH_OPERATION_FAILED;
 551
 552                 bytes_written += 2;
 553                 words_remaining--;
 554                 address += 2;
 555         }
 556
 557         if (bytes_remaining)
 558         {
 559                 uint8_t last_halfword[2] = {0xff, 0xff};
 560                 int i = 0;
 561
 562                 while (bytes_remaining > 0)
 563                 {
 564                         last_halfword[i++] = *(buffer + bytes_written);
 565                         bytes_remaining--;
 566                         bytes_written++;
 567                 }
 568
 569                 bank_adr = address & ~0x03;
 570
 571                 /* write data command */
 572                 target_write_u16(target, bank_adr, 0x40);
 573                 target_write_memory(target, address, 2, 1, last_halfword);
 574
 575                 /* query status command */
 576                 target_write_u16(target, bank_adr, 0x70);
 577
 578                 int timeout;
 579                 for (timeout = 0; timeout < 1000; timeout++)
 580                 {
 581                         target_read_u8(target, bank_adr, &status);
 582                         if (status & 0x80)
 583                                 break;
 584                         alive_sleep(1);
 585                 }
 586                 if (timeout == 1000)
 587                 {
 588                         LOG_ERROR("write timed out");
 589                         return ERROR_FAIL;
 590                 }
 591
 592                 /* clear status reg and read array */
 593                 target_write_u16(target, bank_adr, 0x50);
 594                 target_write_u16(target, bank_adr, 0xFF);
 595
 596                 if (status & 0x10)
 597                         return ERROR_FLASH_OPERATION_FAILED;
 598                 else if (status & 0x02)
 599                         return ERROR_FLASH_OPERATION_FAILED;
 600         }
 601
 602         return ERROR_OK;
 603 }
 604
 605 static int str9x_probe(struct flash_bank *bank)
 606 {
 607         return ERROR_OK;
 608 }
 609
 610 #if 0
 611 COMMAND_HANDLER(str9x_handle_part_id_command)
 612 {
 613         return ERROR_OK;
 614 }
 615 #endif
 616
 617 static int str9x_info(struct flash_bank *bank, char *buf, int buf_size)
 618 {
 619         snprintf(buf, buf_size, "str9x flash driver info");
 620         return ERROR_OK;
 621 }
 622
 623 COMMAND_HANDLER(str9x_handle_flash_config_command)
 624 {
 625         struct str9x_flash_bank *str9x_info;
 626         struct target *target = NULL;
 627
 628         if (CMD_ARGC < 5)
 629         {
 630                 return ERROR_COMMAND_SYNTAX_ERROR;
 631         }
 632
 633         struct flash_bank *bank;
 634         int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
 635         if (ERROR_OK != retval)
 636                 return retval;
 637
 638         uint32_t bbsr, nbbsr, bbadr, nbbadr;
 639         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], bbsr);
 640         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], nbbsr);
 641         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[3], bbadr);
 642         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[4], nbbadr);
 643
 644         str9x_info = bank->driver_priv;
 645
 646         target = bank->target;
 647
 648         if (bank->target->state != TARGET_HALTED)
 649         {
 650                 LOG_ERROR("Target not halted");
 651                 return ERROR_TARGET_NOT_HALTED;
 652         }
 653
 654         /* config flash controller */
 655         target_write_u32(target, FLASH_BBSR, bbsr);
 656         target_write_u32(target, FLASH_NBBSR, nbbsr);
 657         target_write_u32(target, FLASH_BBADR, bbadr >> 2);
 658         target_write_u32(target, FLASH_NBBADR, nbbadr >> 2);
 659
 660         /* set bit 18 instruction TCM order as per flash programming manual */
 661         arm966e_write_cp15(target, 62, 0x40000);
 662
 663         /* enable flash bank 1 */
 664         target_write_u32(target, FLASH_CR, 0x18);
 665         return ERROR_OK;
 666 }
 667
 668 static const struct command_registration str9x_config_command_handlers[] = {
 669         {
 670                 .name = "flash_config",
 671                 .handler = &str9x_handle_flash_config_command,
 672                 .mode = COMMAND_EXEC,
 673                 .help = "Configure str9x flash controller, prior to "
 674                         "programming the flash.",
 675                 .usage = "bank_id BBSR NBBSR BBADR NBBADR",
 676         },
 677         COMMAND_REGISTRATION_DONE
 678 };
 679 static const struct command_registration str9x_command_handlers[] = {
 680         {
 681                 .name = "str9x",
 682                 .mode = COMMAND_ANY,
 683                 .help = "str9x flash command group",
 684                 .chain = str9x_config_command_handlers,
 685         },
 686         COMMAND_REGISTRATION_DONE
 687 };
 688
 689 struct flash_driver str9x_flash = {
 690                 .name = "str9x",
 691                 .commands = str9x_command_handlers,
 692                 .flash_bank_command = &str9x_flash_bank_command,
 693                 .erase = &str9x_erase,
 694                 .protect = &str9x_protect,
 695                 .write = &str9x_write,
 696                 .probe = &str9x_probe,
 697                 .auto_probe = &str9x_probe,
 698                 .erase_check = &default_flash_blank_check,
 699                 .protect_check = &str9x_protect_check,
 700                 .info = &str9x_info,
 701         };