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   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include "replacements.h"
  25
  26 #include "cfi.h"
  27
  28 #include "flash.h"
  29 #include "target.h"
  30 #include "log.h"
  31 #include "armv4_5.h"
  32 #include "algorithm.h"
  33 #include "binarybuffer.h"
  34 #include "types.h"
  35
  36 #include <stdlib.h>
  37 #include <string.h>
  38 #include <unistd.h>
  39
  40 int cfi_register_commands(struct command_context_s *cmd_ctx);
  41 int cfi_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
  42 int cfi_erase(struct flash_bank_s *bank, int first, int last);
  43 int cfi_protect(struct flash_bank_s *bank, int set, int first, int last);
  44 int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
  45 int cfi_probe(struct flash_bank_s *bank);
  46 int cfi_erase_check(struct flash_bank_s *bank);
  47 int cfi_protect_check(struct flash_bank_s *bank);
  48 int cfi_info(struct flash_bank_s *bank, char *buf, int buf_size);
  49
  50 int cfi_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  51
  52 #define CFI_MAX_BUS_WIDTH       4
  53 #define CFI_MAX_CHIP_WIDTH      4
  54
  55 flash_driver_t cfi_flash =
  56 {
  57         .name = "cfi",
  58         .register_commands = cfi_register_commands,
  59         .flash_bank_command = cfi_flash_bank_command,
  60         .erase = cfi_erase,
  61         .protect = cfi_protect,
  62         .write = cfi_write,
  63         .probe = cfi_probe,
  64         .erase_check = cfi_erase_check,
  65         .protect_check = cfi_protect_check,
  66         .info = cfi_info
  67 };
  68
  69 inline u32 flash_address(flash_bank_t *bank, int sector, u32 offset)
  70 {
  71         /* while the sector list isn't built, only accesses to sector 0 work */
  72         if (sector == 0)
  73                 return bank->base + offset * bank->bus_width;
  74         else
  75         {
  76                 if (!bank->sectors)
  77                 {
  78                         ERROR("BUG: sector list not yet built");
  79                         exit(-1);
  80                 }
  81                 return bank->base + bank->sectors[sector].offset + offset * bank->bus_width;
  82         }
  83
  84 }
  85
  86 void cfi_command(flash_bank_t *bank, u8 cmd, u8 *cmd_buf)
  87 {
  88         cfi_flash_bank_t *cfi_info = bank->driver_priv;
  89         int i;
  90
  91         if (cfi_info->target->endianness == TARGET_LITTLE_ENDIAN)
  92         {
  93                 for (i = bank->bus_width; i > 0; i--)
  94                 {
  95                         *cmd_buf++ = (i & (bank->chip_width - 1)) ? 0x0 : cmd;
  96                 }
  97         }
  98         else
  99         {
 100                 for (i = 1; i <= bank->bus_width; i++)
 101                 {
 102                         *cmd_buf++ = (i & (bank->chip_width - 1)) ? 0x0 : cmd;
 103                 }
 104         }
 105 }
 106
 107 /* read unsigned 8-bit value from the bank
 108  * flash banks are expected to be made of similar chips
 109  * the query result should be the same for all
 110  */
 111 u8 cfi_query_u8(flash_bank_t *bank, int sector, u32 offset)
 112 {
 113         cfi_flash_bank_t *cfi_info = bank->driver_priv;
 114         target_t *target = cfi_info->target;
 115         u8 data[CFI_MAX_BUS_WIDTH];
 116
 117         target->type->read_memory(target, flash_address(bank, sector, offset), bank->bus_width, 1, data);
 118
 119         if (cfi_info->target->endianness == TARGET_LITTLE_ENDIAN)
 120                 return data[0];
 121         else
 122                 return data[bank->bus_width - 1];
 123 }
 124
 125 /* read unsigned 8-bit value from the bank
 126  * in case of a bank made of multiple chips,
 127  * the individual values are ORed
 128  */
 129 u8 cfi_get_u8(flash_bank_t *bank, int sector, u32 offset)
 130 {
 131         cfi_flash_bank_t *cfi_info = bank->driver_priv;
 132         target_t *target = cfi_info->target;
 133         u8 data[CFI_MAX_BUS_WIDTH];
 134         int i;
 135
 136         target->type->read_memory(target, flash_address(bank, sector, offset), bank->bus_width, 1, data);
 137
 138         if (cfi_info->target->endianness == TARGET_LITTLE_ENDIAN)
 139         {
 140                 for (i = 0; i < bank->bus_width / bank->chip_width; i++)
 141                         data[0] |= data[i];
 142
 143                 return data[0];
 144         }
 145         else
 146         {
 147                 u8 value = 0;
 148                 for (i = 0; i < bank->bus_width / bank->chip_width; i++)
 149                         value |= data[bank->bus_width - 1 - i];
 150
 151                 return value;
 152         }
 153 }
 154
 155 u16 cfi_query_u16(flash_bank_t *bank, int sector, u32 offset)
 156 {
 157         cfi_flash_bank_t *cfi_info = bank->driver_priv;
 158         target_t *target = cfi_info->target;
 159         u8 data[CFI_MAX_BUS_WIDTH * 2];
 160
 161         target->type->read_memory(target, flash_address(bank, sector, offset), bank->bus_width, 2, data);
 162
 163         if (cfi_info->target->endianness == TARGET_LITTLE_ENDIAN)
 164                 return data[0] | data[bank->bus_width] << 8;
 165         else
 166                 return data[bank->bus_width - 1] | data[(2 * bank->bus_width) - 1] << 8;
 167 }
 168
 169 u32 cfi_query_u32(flash_bank_t *bank, int sector, u32 offset)
 170 {
 171         cfi_flash_bank_t *cfi_info = bank->driver_priv;
 172         target_t *target = cfi_info->target;
 173         u8 data[CFI_MAX_BUS_WIDTH * 4];
 174
 175         target->type->read_memory(target, flash_address(bank, sector, offset), bank->bus_width, 4, data);
 176
 177         if (cfi_info->target->endianness == TARGET_LITTLE_ENDIAN)
 178                 return data[0] | data[bank->bus_width] << 8 | data[bank->bus_width * 2] << 16 | data[bank->bus_width * 3] << 24;
 179         else
 180                 return data[bank->bus_width - 1] | data[(2* bank->bus_width) - 1] << 8 |
 181                                 data[(3 * bank->bus_width) - 1] << 16 | data[(4 * bank->bus_width) - 1] << 24;
 182 }
 183
 184 void cfi_intel_clear_status_register(flash_bank_t *bank)
 185 {
 186         cfi_flash_bank_t *cfi_info = bank->driver_priv;
 187         target_t *target = cfi_info->target;
 188         u8 command[8];
 189
 190         if (target->state != TARGET_HALTED)
 191         {
 192                 ERROR("BUG: attempted to clear status register while target wasn't halted");
 193                 exit(-1);
 194         }
 195
 196         cfi_command(bank, 0x50, command);
 197         target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 198 }
 199
 200 u8 cfi_intel_wait_status_busy(flash_bank_t *bank, int timeout)
 201 {
 202         u8 status;
 203
 204         while ((!((status = cfi_get_u8(bank, 0, 0x0)) & 0x80)) && (timeout-- > 0))
 205         {
 206                 DEBUG("status: 0x%x", status);
 207                 usleep(1000);
 208         }
 209
 210         DEBUG("status: 0x%x", status);
 211
 212         if (status != 0x80)
 213         {
 214                 ERROR("status register: 0x%x", status);
 215                 if (status & 0x2)
 216                         ERROR("Block Lock-Bit Detected, Operation Abort");
 217                 if (status & 0x4)
 218                         ERROR("Program suspended");
 219                 if (status & 0x8)
 220                         ERROR("Low Programming Voltage Detected, Operation Aborted");
 221                 if (status & 0x10)
 222                         ERROR("Program Error / Error in Setting Lock-Bit");
 223                 if (status & 0x20)
 224                         ERROR("Error in Block Erasure or Clear Lock-Bits");
 225                 if (status & 0x40)
 226                         ERROR("Block Erase Suspended");
 227
 228                 cfi_intel_clear_status_register(bank);
 229         }
 230
 231         return status;
 232 }
 233 int cfi_read_intel_pri_ext(flash_bank_t *bank)
 234 {
 235         cfi_flash_bank_t *cfi_info = bank->driver_priv;
 236         cfi_intel_pri_ext_t *pri_ext = malloc(sizeof(cfi_intel_pri_ext_t));
 237         target_t *target = cfi_info->target;
 238         u8 command[8];
 239
 240         cfi_info->pri_ext = pri_ext;
 241
 242         pri_ext->pri[0] = cfi_query_u8(bank, 0, cfi_info->pri_addr + 0);
 243         pri_ext->pri[1] = cfi_query_u8(bank, 0, cfi_info->pri_addr + 1);
 244         pri_ext->pri[2] = cfi_query_u8(bank, 0, cfi_info->pri_addr + 2);
 245
 246         if ((pri_ext->pri[0] != 'P') || (pri_ext->pri[1] != 'R') || (pri_ext->pri[2] != 'I'))
 247         {
 248                 cfi_command(bank, 0xf0, command);
 249                 target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 250                 cfi_command(bank, 0xff, command);
 251                 target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 252                 return ERROR_FLASH_BANK_INVALID;
 253         }
 254
 255         pri_ext->major_version = cfi_query_u8(bank, 0, cfi_info->pri_addr + 3);
 256         pri_ext->minor_version = cfi_query_u8(bank, 0, cfi_info->pri_addr + 4);
 257
 258         DEBUG("pri: '%c%c%c', version: %c.%c", pri_ext->pri[0], pri_ext->pri[1], pri_ext->pri[2], pri_ext->major_version, pri_ext->minor_version);
 259
 260         pri_ext->feature_support = cfi_query_u32(bank, 0, cfi_info->pri_addr + 5);
 261         pri_ext->suspend_cmd_support = cfi_query_u8(bank, 0, cfi_info->pri_addr + 9);
 262         pri_ext->blk_status_reg_mask = cfi_query_u16(bank, 0, cfi_info->pri_addr + 0xa);
 263
 264         DEBUG("feature_support: 0x%x, suspend_cmd_support: 0x%x, blk_status_reg_mask: 0x%x", pri_ext->feature_support, pri_ext->suspend_cmd_support, pri_ext->blk_status_reg_mask);
 265
 266         pri_ext->vcc_optimal = cfi_query_u8(bank, 0, cfi_info->pri_addr + 0xc);
 267         pri_ext->vpp_optimal = cfi_query_u8(bank, 0, cfi_info->pri_addr + 0xd);
 268
 269         DEBUG("Vcc opt: %1.1x.%1.1x, Vpp opt: %1.1x.%1.1x",
 270                   (pri_ext->vcc_optimal & 0xf0) >> 4, pri_ext->vcc_optimal & 0x0f,
 271                   (pri_ext->vpp_optimal & 0xf0) >> 4, pri_ext->vpp_optimal & 0x0f);
 272
 273         pri_ext->num_protection_fields = cfi_query_u8(bank, 0, cfi_info->pri_addr + 0xe);
 274         if (pri_ext->num_protection_fields != 1)
 275         {
 276                 WARNING("expected one protection register field, but found %i", pri_ext->num_protection_fields);
 277         }
 278
 279         pri_ext->prot_reg_addr = cfi_query_u16(bank, 0, cfi_info->pri_addr + 0xf);
 280         pri_ext->fact_prot_reg_size = cfi_query_u8(bank, 0, cfi_info->pri_addr + 0x11);
 281         pri_ext->user_prot_reg_size = cfi_query_u8(bank, 0, cfi_info->pri_addr + 0x12);
 282
 283         DEBUG("protection_fields: %i, prot_reg_addr: 0x%x, factory pre-programmed: %i, user programmable: %i", pri_ext->num_protection_fields, pri_ext->prot_reg_addr, 1 << pri_ext->fact_prot_reg_size, 1 << pri_ext->user_prot_reg_size);
 284
 285         return ERROR_OK;
 286 }
 287
 288 int cfi_intel_info(struct flash_bank_s *bank, char *buf, int buf_size)
 289 {
 290         int printed;
 291         cfi_flash_bank_t *cfi_info = bank->driver_priv;
 292         cfi_intel_pri_ext_t *pri_ext = cfi_info->pri_ext;
 293
 294         printed = snprintf(buf, buf_size, "\nintel primary algorithm extend information:\n");
 295         buf += printed;
 296         buf_size -= printed;
 297
 298         printed = snprintf(buf, buf_size, "pri: '%c%c%c', version: %c.%c\n", pri_ext->pri[0], pri_ext->pri[1], pri_ext->pri[2], pri_ext->major_version, pri_ext->minor_version);
 299         buf += printed;
 300         buf_size -= printed;
 301
 302         printed = snprintf(buf, buf_size, "feature_support: 0x%x, suspend_cmd_support: 0x%x, blk_status_reg_mask: 0x%x\n", pri_ext->feature_support, pri_ext->suspend_cmd_support, pri_ext->blk_status_reg_mask);
 303         buf += printed;
 304         buf_size -= printed;
 305
 306         printed = snprintf(buf, buf_size, "Vcc opt: %1.1x.%1.1x, Vpp opt: %1.1x.%1.1x\n",
 307                 (pri_ext->vcc_optimal & 0xf0) >> 4, pri_ext->vcc_optimal & 0x0f,
 308                 (pri_ext->vpp_optimal & 0xf0) >> 4, pri_ext->vpp_optimal & 0x0f);
 309         buf += printed;
 310         buf_size -= printed;
 311
 312         printed = snprintf(buf, buf_size, "protection_fields: %i, prot_reg_addr: 0x%x, factory pre-programmed: %i, user programmable: %i\n", pri_ext->num_protection_fields, pri_ext->prot_reg_addr, 1 << pri_ext->fact_prot_reg_size, 1 << pri_ext->user_prot_reg_size);
 313
 314         return ERROR_OK;
 315 }
 316
 317 int cfi_register_commands(struct command_context_s *cmd_ctx)
 318 {
 319         command_t *cfi_cmd = register_command(cmd_ctx, NULL, "cfi", NULL, COMMAND_ANY, NULL);
 320         /*
 321         register_command(cmd_ctx, cfi_cmd, "part_id", cfi_handle_part_id_command, COMMAND_EXEC,
 322                                          "print part id of cfi flash bank <num>");
 323         */
 324         return ERROR_OK;
 325 }
 326
 327 /* flash_bank cfi <base> <size> <chip_width> <bus_width> <target#>
 328  */
 329 int cfi_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
 330 {
 331         cfi_flash_bank_t *cfi_info;
 332
 333         if (argc < 6)
 334         {
 335                 WARNING("incomplete flash_bank cfi configuration");
 336                 return ERROR_FLASH_BANK_INVALID;
 337         }
 338
 339         if ((strtoul(args[4], NULL, 0) > CFI_MAX_CHIP_WIDTH)
 340                 || (strtoul(args[3], NULL, 0) > CFI_MAX_BUS_WIDTH))
 341         {
 342                 ERROR("chip and bus width have to specified in byte");
 343                 return ERROR_FLASH_BANK_INVALID;
 344         }
 345
 346         cfi_info = malloc(sizeof(cfi_flash_bank_t));
 347         bank->driver_priv = cfi_info;
 348
 349         cfi_info->target = get_target_by_num(strtoul(args[5], NULL, 0));
 350         if (!cfi_info->target)
 351         {
 352                 ERROR("no target '%i' configured", args[5]);
 353                 exit(-1);
 354         }
 355
 356         /* bank wasn't probed yet */
 357         cfi_info->qry[0] = -1;
 358
 359         return ERROR_OK;
 360 }
 361
 362 int cfi_intel_erase(struct flash_bank_s *bank, int first, int last)
 363 {
 364         cfi_flash_bank_t *cfi_info = bank->driver_priv;
 365         cfi_intel_pri_ext_t *pri_ext = cfi_info->pri_ext;
 366         target_t *target = cfi_info->target;
 367         u8 command[8];
 368         int i;
 369
 370         cfi_intel_clear_status_register(bank);
 371
 372         for (i = first; i <= last; i++)
 373         {
 374                 cfi_command(bank, 0x20, command);
 375                 target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command);
 376
 377                 cfi_command(bank, 0xd0, command);
 378                 target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command);
 379
 380                 if (cfi_intel_wait_status_busy(bank, 1000 * (1 << cfi_info->block_erase_timeout_typ)) == 0x80)
 381                         bank->sectors[i].is_erased = 1;
 382                 else
 383                 {
 384                         cfi_command(bank, 0xff, command);
 385                         target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 386
 387                         ERROR("couldn't erase block %i of flash bank at base 0x%x", i, bank->base);
 388                         return ERROR_FLASH_OPERATION_FAILED;
 389                 }
 390         }
 391
 392         cfi_command(bank, 0xff, command);
 393         target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 394
 395         return ERROR_OK;
 396 }
 397
 398 int cfi_erase(struct flash_bank_s *bank, int first, int last)
 399 {
 400         cfi_flash_bank_t *cfi_info = bank->driver_priv;
 401
 402         if (cfi_info->target->state != TARGET_HALTED)
 403         {
 404                 return ERROR_TARGET_NOT_HALTED;
 405         }
 406
 407         if ((first < 0) || (last < first) || (last >= bank->num_sectors))
 408         {
 409                 return ERROR_FLASH_SECTOR_INVALID;
 410         }
 411
 412         if (cfi_info->qry[0] != 'Q')
 413                 return ERROR_FLASH_BANK_NOT_PROBED;
 414
 415         switch(cfi_info->pri_id)
 416         {
 417                 case 1:
 418                 case 3:
 419                         return cfi_intel_erase(bank, first, last);
 420                         break;
 421                 default:
 422                         ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
 423                         break;
 424         }
 425
 426         return ERROR_OK;
 427 }
 428
 429 int cfi_intel_protect(struct flash_bank_s *bank, int set, int first, int last)
 430 {
 431         cfi_flash_bank_t *cfi_info = bank->driver_priv;
 432         cfi_intel_pri_ext_t *pri_ext = cfi_info->pri_ext;
 433         target_t *target = cfi_info->target;
 434         u8 command[8];
 435         int i;
 436
 437         if (!(pri_ext->feature_support & 0x28))
 438                 return ERROR_FLASH_OPERATION_FAILED;
 439
 440         cfi_intel_clear_status_register(bank);
 441
 442         for (i = first; i <= last; i++)
 443         {
 444                 cfi_command(bank, 0x60, command);
 445                 target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command);
 446                 if (set)
 447                 {
 448                         cfi_command(bank, 0x01, command);
 449                         target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command);
 450                         bank->sectors[i].is_protected = 1;
 451                 }
 452                 else
 453                 {
 454                         cfi_command(bank, 0xd0, command);
 455                         target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command);
 456                         bank->sectors[i].is_protected = 0;
 457                 }
 458
 459                 cfi_intel_wait_status_busy(bank, 100);
 460         }
 461
 462         /* if the device doesn't support individual block lock bits set/clear,
 463          * all blocks have been unlocked in parallel, so we set those that should be protected
 464          */
 465         if ((!set) && (!(pri_ext->feature_support & 0x20)))
 466         {
 467                 for (i = 0; i < bank->num_sectors; i++)
 468                 {
 469                         cfi_intel_clear_status_register(bank);
 470                         cfi_command(bank, 0x60, command);
 471                         target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command);
 472                         if (bank->sectors[i].is_protected == 1)
 473                         {
 474                                 cfi_command(bank, 0x01, command);
 475                                 target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command);
 476                         }
 477
 478                         cfi_intel_wait_status_busy(bank, 100);
 479                 }
 480         }
 481
 482         cfi_command(bank, 0xff, command);
 483         target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 484
 485         return ERROR_OK;
 486 }
 487
 488 int cfi_protect(struct flash_bank_s *bank, int set, int first, int last)
 489 {
 490         cfi_flash_bank_t *cfi_info = bank->driver_priv;
 491
 492         if (cfi_info->target->state != TARGET_HALTED)
 493         {
 494                 return ERROR_TARGET_NOT_HALTED;
 495         }
 496
 497         if ((first < 0) || (last < first) || (last >= bank->num_sectors))
 498         {
 499                 return ERROR_FLASH_SECTOR_INVALID;
 500         }
 501
 502         if (cfi_info->qry[0] != 'Q')
 503                 return ERROR_FLASH_BANK_NOT_PROBED;
 504
 505         switch(cfi_info->pri_id)
 506         {
 507                 case 1:
 508                 case 3:
 509                         cfi_intel_protect(bank, set, first, last);
 510                         break;
 511                 default:
 512                         ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
 513                         break;
 514         }
 515
 516         return ERROR_OK;
 517 }
 518
 519 void cfi_add_byte(struct flash_bank_s *bank, u8 *word, u8 byte)
 520 {
 521         cfi_flash_bank_t *cfi_info = bank->driver_priv;
 522         target_t *target = cfi_info->target;
 523
 524         int i;
 525
 526         if (target->endianness == TARGET_LITTLE_ENDIAN)
 527         {
 528                 /* shift bytes */
 529                 for (i = 0; i < bank->bus_width - 1; i++)
 530                         word[i] = word[i + 1];
 531                 word[bank->bus_width - 1] = byte;
 532         }
 533         else
 534         {
 535                 /* shift bytes */
 536                 for (i = bank->bus_width - 1; i > 0; i--)
 537                         word[i] = word[i - 1];
 538                 word[0] = byte;
 539         }
 540 }
 541
 542 int cfi_intel_write_block(struct flash_bank_s *bank, u8 *buffer, u32 address, u32 count)
 543 {
 544         cfi_flash_bank_t *cfi_info = bank->driver_priv;
 545         cfi_intel_pri_ext_t *pri_ext = cfi_info->pri_ext;
 546         target_t *target = cfi_info->target;
 547         reg_param_t reg_params[5];
 548         armv4_5_algorithm_t armv4_5_info;
 549         working_area_t *source;
 550         u32 buffer_size = 32768;
 551         u8 write_command[CFI_MAX_BUS_WIDTH];
 552         int i;
 553         int retval;
 554
 555         u32 word_32_code[] = {
 556                 0xe4904004,   /* loop:  ldr r4, [r0], #4 */
 557                 0xe5813000,   /*                str r3, [r1] */
 558                 0xe5814000,   /*                str r4, [r1] */
 559                 0xe5914000,   /* busy   ldr r4, [r1] */
 560                 0xe3140080,   /*                tst r4, #0x80 */
 561                 0x0afffffc,   /*                beq busy */
 562                 0xe314007f,   /*                tst r4, #0x7f */
 563                 0x1a000003,   /*                bne done */
 564                 0xe2522001,   /*                subs r2, r2, #1 */
 565                 0x0a000001,   /*                beq done */
 566                 0xe2811004,   /*                add r1, r1 #4 */
 567                 0xeafffff3,   /*                b loop */
 568                 0xeafffffe,   /* done:  b -2 */
 569         };
 570
 571         u32 word_16_code[] = {
 572                 0xe0d040b2,   /* loop:  ldrh r4, [r0], #2 */
 573                 0xe1c130b0,   /*                strh r3, [r1] */
 574                 0xe1c140b0,   /*                strh r4, [r1] */
 575                 0xe1d140b0,   /* busy   ldrh r4, [r1] */
 576                 0xe3140080,   /*                tst r4, #0x80 */
 577                 0x0afffffc,   /*                beq busy */
 578                 0xe314007f,   /*                tst r4, #0x7f */
 579                 0x1a000003,   /*                bne done */
 580                 0xe2522001,   /*                subs r2, r2, #1 */
 581                 0x0a000001,   /*                beq done */
 582                 0xe2811002,   /*                add r1, r1 #2 */
 583                 0xeafffff3,   /*                b loop */
 584                 0xeafffffe,   /* done:  b -2 */
 585         };
 586
 587         u32 word_8_code[] = {
 588                 0xe4d04001,   /* loop:  ldrb r4, [r0], #1 */
 589                 0xe5c13000,   /*                strb r3, [r1] */
 590                 0xe5c14000,   /*                strb r4, [r1] */
 591                 0xe5d14000,   /* busy   ldrb r4, [r1] */
 592                 0xe3140080,   /*                tst r4, #0x80 */
 593                 0x0afffffc,   /*                beq busy */
 594                 0xe314007f,   /*                tst r4, #0x7f */
 595                 0x1a000003,   /*                bne done */
 596                 0xe2522001,   /*                subs r2, r2, #1 */
 597                 0x0a000001,   /*                beq done */
 598                 0xe2811001,   /*                add r1, r1 #1 */
 599                 0xeafffff3,   /*                b loop */
 600                 0xeafffffe,   /* done:  b -2 */
 601         };
 602
 603         cfi_intel_clear_status_register(bank);
 604
 605         armv4_5_info.common_magic = ARMV4_5_COMMON_MAGIC;
 606         armv4_5_info.core_mode = ARMV4_5_MODE_SVC;
 607         armv4_5_info.core_state = ARMV4_5_STATE_ARM;
 608
 609         /* flash write code */
 610         if (!cfi_info->write_algorithm)
 611         {
 612                 if (target_alloc_working_area(target, 4 * 13, &cfi_info->write_algorithm) != ERROR_OK)
 613                 {
 614                         WARNING("no working area available, can't do block memory writes");
 615                         return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
 616                 };
 617
 618                 /* write algorithm code to working area */
 619                 if (bank->bus_width == 1)
 620                 {
 621                         target_write_buffer(target, cfi_info->write_algorithm->address, 13 * 4, (u8*)word_8_code);
 622                 }
 623                 else if (bank->bus_width == 2)
 624                 {
 625                         target_write_buffer(target, cfi_info->write_algorithm->address, 13 * 4, (u8*)word_16_code);
 626                 }
 627                 else if (bank->bus_width == 4)
 628                 {
 629                         target_write_buffer(target, cfi_info->write_algorithm->address, 13 * 4, (u8*)word_32_code);
 630                 }
 631                 else
 632                 {
 633                         return ERROR_FLASH_OPERATION_FAILED;
 634                 }
 635         }
 636
 637         while (target_alloc_working_area(target, buffer_size, &source) != ERROR_OK)
 638         {
 639                 buffer_size /= 2;
 640                 if (buffer_size <= 256)
 641                 {
 642                         /* if we already allocated the writing code, but failed to get a buffer, free the algorithm */
 643                         if (cfi_info->write_algorithm)
 644                                 target_free_working_area(target, cfi_info->write_algorithm);
 645
 646                         WARNING("no large enough working area available, can't do block memory writes");
 647                         return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
 648                 }
 649         };
 650
 651         init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
 652         init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
 653         init_reg_param(&reg_params[2], "r2", 32, PARAM_OUT);
 654         init_reg_param(&reg_params[3], "r3", 32, PARAM_OUT);
 655         init_reg_param(&reg_params[4], "r4", 32, PARAM_IN);
 656
 657         while (count > 0)
 658         {
 659                 u32 thisrun_count = (count > buffer_size) ? buffer_size : count;
 660
 661                 target_write_buffer(target, source->address, thisrun_count, buffer);
 662
 663                 buf_set_u32(reg_params[0].value, 0, 32, source->address);
 664                 buf_set_u32(reg_params[1].value, 0, 32, address);
 665                 buf_set_u32(reg_params[2].value, 0, 32, thisrun_count / bank->bus_width);
 666                 cfi_command(bank, 0x40, write_command);
 667                 buf_set_u32(reg_params[3].value, 0, 32, buf_get_u32(write_command, 0, 32));
 668
 669                 if ((retval = target->type->run_algorithm(target, 0, NULL, 5, reg_params, cfi_info->write_algorithm->address, cfi_info->write_algorithm->address + (12 * 4), 10000, &armv4_5_info)) != ERROR_OK)
 670                 {
 671                         cfi_intel_clear_status_register(bank);
 672                         return ERROR_FLASH_OPERATION_FAILED;
 673                 }
 674
 675                 if (buf_get_u32(reg_params[4].value, 0, 32) != 0x80)
 676                 {
 677                         /* read status register (outputs debug inforation) */
 678                         cfi_intel_wait_status_busy(bank, 100);
 679                         cfi_intel_clear_status_register(bank);
 680                         return ERROR_FLASH_OPERATION_FAILED;
 681                 }
 682
 683                 buffer += thisrun_count;
 684                 address += thisrun_count;
 685                 count -= thisrun_count;
 686         }
 687
 688         target_free_working_area(target, source);
 689
 690         destroy_reg_param(&reg_params[0]);
 691         destroy_reg_param(&reg_params[1]);
 692         destroy_reg_param(&reg_params[2]);
 693         destroy_reg_param(&reg_params[3]);
 694         destroy_reg_param(&reg_params[4]);
 695
 696         return ERROR_OK;
 697 }
 698
 699 int cfi_intel_write_word(struct flash_bank_s *bank, u8 *word, u32 address)
 700 {
 701         cfi_flash_bank_t *cfi_info = bank->driver_priv;
 702         cfi_intel_pri_ext_t *pri_ext = cfi_info->pri_ext;
 703         target_t *target = cfi_info->target;
 704         u8 command[8];
 705
 706         cfi_intel_clear_status_register(bank);
 707         cfi_command(bank, 0x40, command);
 708         target->type->write_memory(target, address, bank->bus_width, 1, command);
 709
 710         target->type->write_memory(target, address, bank->bus_width, 1, word);
 711
 712         if (cfi_intel_wait_status_busy(bank, 1000 * (1 << cfi_info->word_write_timeout_max)) != 0x80)
 713         {
 714                 cfi_command(bank, 0xff, command);
 715                 target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 716
 717                 ERROR("couldn't write word at base 0x%x, address %x", bank->base, address);
 718                 return ERROR_FLASH_OPERATION_FAILED;
 719         }
 720
 721         return ERROR_OK;
 722 }
 723
 724 int cfi_write_word(struct flash_bank_s *bank, u8 *word, u32 address)
 725 {
 726         cfi_flash_bank_t *cfi_info = bank->driver_priv;
 727         target_t *target = cfi_info->target;
 728
 729         switch(cfi_info->pri_id)
 730         {
 731                 case 1:
 732                 case 3:
 733                         return cfi_intel_write_word(bank, word, address);
 734                         break;
 735                 default:
 736                         ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
 737                         break;
 738         }
 739
 740         return ERROR_FLASH_OPERATION_FAILED;
 741 }
 742
 743 int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
 744 {
 745         cfi_flash_bank_t *cfi_info = bank->driver_priv;
 746         target_t *target = cfi_info->target;
 747         u32 address = bank->base + offset;      /* address of first byte to be programmed */
 748         u32 write_p, copy_p;
 749         int align;      /* number of unaligned bytes */
 750         u8 current_word[CFI_MAX_BUS_WIDTH * 4]; /* word (bus_width size) currently being programmed */
 751         int i;
 752         int retval;
 753
 754         if (cfi_info->target->state != TARGET_HALTED)
 755         {
 756                 return ERROR_TARGET_NOT_HALTED;
 757         }
 758
 759         if (offset + count > bank->size)
 760                 return ERROR_FLASH_DST_OUT_OF_BANK;
 761
 762         if (cfi_info->qry[0] != 'Q')
 763                 return ERROR_FLASH_BANK_NOT_PROBED;
 764
 765         /* start at the first byte of the first word (bus_width size) */
 766         write_p = address & ~(bank->bus_width - 1);
 767         if ((align = address - write_p) != 0)
 768         {
 769                 for (i = 0; i < bank->bus_width; i++)
 770                         current_word[i] = 0;
 771                 copy_p = write_p;
 772
 773                 /* copy bytes before the first write address */
 774                 for (i = 0; i < align; ++i, ++copy_p)
 775                 {
 776                         u8 byte;
 777                         target->type->read_memory(target, copy_p, 1, 1, &byte);
 778                         cfi_add_byte(bank, current_word, byte);
 779                 }
 780
 781                 /* add bytes from the buffer */
 782                 for (; (i < bank->bus_width) && (count > 0); i++)
 783                 {
 784                         cfi_add_byte(bank, current_word, *buffer++);
 785                         count--;
 786                         copy_p++;
 787                 }
 788
 789                 /* if the buffer is already finished, copy bytes after the last write address */
 790                 for (; (count == 0) && (i < bank->bus_width); ++i, ++copy_p)
 791                 {
 792                         u8 byte;
 793                         target->type->read_memory(target, copy_p, 1, 1, &byte);
 794                         cfi_add_byte(bank, current_word, byte);
 795                 }
 796
 797                 retval = cfi_write_word(bank, current_word, write_p);
 798                 if (retval != ERROR_OK)
 799                         return retval;
 800                 write_p = copy_p;
 801         }
 802
 803         /* handle blocks of bus_size aligned bytes */
 804         switch(cfi_info->pri_id)
 805         {
 806                 /* try block writes (fails without working area) */
 807                 case 1:
 808                 case 3:
 809                         retval = cfi_intel_write_block(bank, buffer, write_p, count);
 810                         break;
 811                 default:
 812                         ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
 813                         break;
 814         }
 815         if (retval != ERROR_OK)
 816         {
 817                 if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
 818                 {
 819                         /* fall back to memory writes */
 820                         while (count > bank->bus_width)
 821                         {
 822                                 for (i = 0; i < bank->bus_width; i++)
 823                                         current_word[i] = 0;
 824
 825                                 for (i = 0; i < bank->bus_width; i++)
 826                                 {
 827                                         cfi_add_byte(bank, current_word, *buffer++);
 828                                 }
 829
 830                                 retval = cfi_write_word(bank, current_word, write_p);
 831                                 if (retval != ERROR_OK)
 832                                         return retval;
 833                                 write_p += bank->bus_width;
 834                                 count -= bank->bus_width;
 835                         }
 836                 }
 837                 else
 838                         return retval;
 839         }
 840
 841         /* handle unaligned tail bytes */
 842         if (count > 0)
 843         {
 844                 copy_p = write_p;
 845                 for (i = 0; i < bank->bus_width; i++)
 846                         current_word[i] = 0;
 847
 848                 for (i = 0; (i < bank->bus_width) && (count > 0); ++i, ++copy_p)
 849                 {
 850                         cfi_add_byte(bank, current_word, *buffer++);
 851                         count--;
 852                 }
 853                 for (; i < bank->bus_width; ++i, ++copy_p)
 854                 {
 855                         u8 byte;
 856                         target->type->read_memory(target, copy_p, 1, 1, &byte);
 857                         cfi_add_byte(bank, current_word, byte);
 858                 }
 859                 retval = cfi_write_word(bank, current_word, write_p);
 860                 if (retval != ERROR_OK)
 861                         return retval;
 862         }
 863
 864         /* return to read array mode */
 865         cfi_command(bank, 0xf0, current_word);
 866         target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, current_word);
 867         cfi_command(bank, 0xff, current_word);
 868         target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, current_word);
 869
 870         return ERROR_OK;
 871 }
 872
 873 int cfi_probe(struct flash_bank_s *bank)
 874 {
 875         cfi_flash_bank_t *cfi_info = bank->driver_priv;
 876         target_t *target = cfi_info->target;
 877         u8 command[8];
 878
 879
 880         cfi_command(bank, 0x98, command);
 881         target->type->write_memory(target, flash_address(bank, 0, 0x55), bank->bus_width, 1, command);
 882
 883         cfi_info->qry[0] = cfi_query_u8(bank, 0, 0x10);
 884         cfi_info->qry[1] = cfi_query_u8(bank, 0, 0x11);
 885         cfi_info->qry[2] = cfi_query_u8(bank, 0, 0x12);
 886
 887         DEBUG("CFI qry returned: 0x%2.2x 0x%2.2x 0x%2.2x", cfi_info->qry[0], cfi_info->qry[1], cfi_info->qry[2]);
 888
 889         if ((cfi_info->qry[0] != 'Q') || (cfi_info->qry[1] != 'R') || (cfi_info->qry[2] != 'Y'))
 890         {
 891                 cfi_command(bank, 0xf0, command);
 892                 target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 893                 cfi_command(bank, 0xff, command);
 894                 target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 895                 return ERROR_FLASH_BANK_INVALID;
 896         }
 897
 898         cfi_info->pri_id = cfi_query_u16(bank, 0, 0x13);
 899         cfi_info->pri_addr = cfi_query_u16(bank, 0, 0x15);
 900         cfi_info->alt_id = cfi_query_u16(bank, 0, 0x17);
 901         cfi_info->alt_addr = cfi_query_u16(bank, 0, 0x19);
 902
 903         DEBUG("qry: '%c%c%c', pri_id: 0x%4.4x, pri_addr: 0x%4.4x, alt_id: 0x%4.4x, alt_addr: 0x%4.4x", cfi_info->qry[0], cfi_info->qry[1], cfi_info->qry[2], cfi_info->pri_id, cfi_info->pri_addr, cfi_info->alt_id, cfi_info->alt_addr);
 904
 905         cfi_info->vcc_min = cfi_query_u8(bank, 0, 0x1b);
 906         cfi_info->vcc_max = cfi_query_u8(bank, 0, 0x1c);
 907         cfi_info->vpp_min = cfi_query_u8(bank, 0, 0x1d);
 908         cfi_info->vpp_max = cfi_query_u8(bank, 0, 0x1e);
 909         cfi_info->word_write_timeout_typ = cfi_query_u8(bank, 0, 0x1f);
 910         cfi_info->buf_write_timeout_typ = cfi_query_u8(bank, 0, 0x20);
 911         cfi_info->block_erase_timeout_typ = cfi_query_u8(bank, 0, 0x21);
 912         cfi_info->chip_erase_timeout_typ = cfi_query_u8(bank, 0, 0x22);
 913         cfi_info->word_write_timeout_max = cfi_query_u8(bank, 0, 0x23);
 914         cfi_info->buf_write_timeout_max = cfi_query_u8(bank, 0, 0x24);
 915         cfi_info->block_erase_timeout_max = cfi_query_u8(bank, 0, 0x25);
 916         cfi_info->chip_erase_timeout_max = cfi_query_u8(bank, 0, 0x26);
 917
 918         DEBUG("Vcc min: %1.1x.%1.1x, Vcc max: %1.1x.%1.1x, Vpp min: %1.1x.%1.1x, Vpp max: %1.1x.%1.1x",
 919                 (cfi_info->vcc_min & 0xf0) >> 4, cfi_info->vcc_min & 0x0f,
 920                 (cfi_info->vcc_max & 0xf0) >> 4, cfi_info->vcc_max & 0x0f,
 921                 (cfi_info->vpp_min & 0xf0) >> 4, cfi_info->vpp_min & 0x0f,
 922                 (cfi_info->vpp_max & 0xf0) >> 4, cfi_info->vpp_max & 0x0f);
 923         DEBUG("typ. word write timeout: %u, typ. buf write timeout: %u, typ. block erase timeout: %u, typ. chip erase timeout: %u", 1 << cfi_info->word_write_timeout_typ, 1 << cfi_info->buf_write_timeout_typ,
 924                 1 << cfi_info->block_erase_timeout_typ, 1 << cfi_info->chip_erase_timeout_typ);
 925         DEBUG("max. word write timeout: %u, max. buf write timeout: %u, max. block erase timeout: %u, max. chip erase timeout: %u", (1 << cfi_info->word_write_timeout_max) * (1 << cfi_info->word_write_timeout_typ),
 926                 (1 << cfi_info->buf_write_timeout_max) * (1 << cfi_info->buf_write_timeout_typ),
 927                 (1 << cfi_info->block_erase_timeout_max) * (1 << cfi_info->block_erase_timeout_typ),
 928                 (1 << cfi_info->chip_erase_timeout_max) * (1 << cfi_info->chip_erase_timeout_typ));
 929
 930         cfi_info->dev_size = cfi_query_u8(bank, 0, 0x27);
 931         cfi_info->interface_desc = cfi_query_u16(bank, 0, 0x28);
 932         cfi_info->max_buf_write_size = cfi_query_u16(bank, 0, 0x2a);
 933         cfi_info->num_erase_regions = cfi_query_u8(bank, 0, 0x2c);
 934
 935         DEBUG("size: 0x%x, interface desc: %i, max buffer write size: %x", 1 << cfi_info->dev_size, cfi_info->interface_desc, cfi_info->max_buf_write_size);
 936
 937         if (1 << cfi_info->dev_size != bank->size)
 938         {
 939                 WARNING("configuration specifies 0x%x size, but a 0x%x size flash was found", bank->size, 1 << cfi_info->dev_size);
 940         }
 941
 942         if (cfi_info->num_erase_regions)
 943         {
 944                 int i;
 945                 int num_sectors = 0;
 946                 int sector = 0;
 947                 u32 offset = 0;
 948                 cfi_info->erase_region_info = malloc(4 * cfi_info->num_erase_regions);
 949
 950                 for (i = 0; i < cfi_info->num_erase_regions; i++)
 951                 {
 952                         cfi_info->erase_region_info[i] = cfi_query_u32(bank, 0, 0x2d + (4 * i));
 953                         DEBUG("erase region[%i]: %i blocks of size 0x%x", i, (cfi_info->erase_region_info[i] & 0xffff) + 1, (cfi_info->erase_region_info[i] >> 16) * 256);
 954
 955                         num_sectors += (cfi_info->erase_region_info[i] & 0xffff) + 1;
 956                 }
 957
 958                 bank->num_sectors = num_sectors;
 959                 bank->sectors = malloc(sizeof(flash_sector_t) * num_sectors);
 960                 for (i = 0; i < cfi_info->num_erase_regions; i++)
 961                 {
 962                         int j;
 963                         for (j = 0; j < (cfi_info->erase_region_info[i] & 0xffff) + 1; j++)
 964                         {
 965                                 bank->sectors[sector].offset = offset;
 966                                 bank->sectors[sector].size = (cfi_info->erase_region_info[i] >> 16) * 256;
 967                                 offset += bank->sectors[sector].size;
 968                                 bank->sectors[sector].is_erased = -1;
 969                                 bank->sectors[sector].is_protected = -1;
 970                                 sector++;
 971                         }
 972                 }
 973         }
 974         else
 975         {
 976                 cfi_info->erase_region_info = NULL;
 977         }
 978
 979         switch(cfi_info->pri_id)
 980         {
 981                 case 1:
 982                 case 3:
 983                         cfi_read_intel_pri_ext(bank);
 984                         break;
 985                 default:
 986                         ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
 987                         break;
 988         }
 989
 990         /* return to read array mode */
 991         cfi_command(bank, 0xf0, command);
 992         target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 993         cfi_command(bank, 0xff, command);
 994         target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 995
 996         return ERROR_OK;
 997 }
 998
 999 int cfi_erase_check(struct flash_bank_s *bank)
1000 {
1001         cfi_flash_bank_t *cfi_info = bank->driver_priv;
1002         target_t *target = cfi_info->target;
1003         int i;
1004         int retval;
1005
1006         if (!cfi_info->erase_check_algorithm)
1007         {
1008                 u32 erase_check_code[] =
1009                 {
1010                         0xe4d03001,     /* ldrb r3, [r0], #1    */
1011                         0xe0022003, /* and r2, r2, r3           */
1012                         0xe2511001, /* subs r1, r1, #1          */
1013                         0x1afffffb,     /* b -4                                 */
1014                         0xeafffffe      /* b 0                                  */
1015                 };
1016
1017                 /* make sure we have a working area */
1018                 if (target_alloc_working_area(target, 20, &cfi_info->erase_check_algorithm) != ERROR_OK)
1019                 {
1020                         WARNING("no working area available, falling back to slow memory reads");
1021                 }
1022                 else
1023                 {
1024                         u8 erase_check_code_buf[5 * 4];
1025
1026                         for (i = 0; i < 5; i++)
1027                                 target_buffer_set_u32(target, erase_check_code_buf + (i*4), erase_check_code[i]);
1028
1029                         /* write algorithm code to working area */
1030                         target->type->write_memory(target, cfi_info->erase_check_algorithm->address, 4, 5, erase_check_code_buf);
1031                 }
1032         }
1033
1034         if (!cfi_info->erase_check_algorithm)
1035         {
1036                 u32 *buffer = malloc(4096);
1037
1038                 for (i = 0; i < bank->num_sectors; i++)
1039                 {
1040                         u32 address = bank->base + bank->sectors[i].offset;
1041                         u32 size = bank->sectors[i].size;
1042                         u32 check = 0xffffffffU;
1043                         int erased = 1;
1044
1045                         while (size > 0)
1046                         {
1047                                 u32 thisrun_size = (size > 4096) ? 4096 : size;
1048                                 int j;
1049
1050                                 target->type->read_memory(target, address, 4, thisrun_size / 4, (u8*)buffer);
1051
1052                                 for (j = 0; j < thisrun_size / 4; j++)
1053                                         check &= buffer[j];
1054
1055                                 if (check != 0xffffffff)
1056                                 {
1057                                         erased = 0;
1058                                         break;
1059                                 }
1060
1061                                 size -= thisrun_size;
1062                                 address += thisrun_size;
1063                         }
1064
1065                         bank->sectors[i].is_erased = erased;
1066                 }
1067
1068                 free(buffer);
1069         }
1070         else
1071         {
1072                 for (i = 0; i < bank->num_sectors; i++)
1073                 {
1074                         u32 address = bank->base + bank->sectors[i].offset;
1075                         u32 size = bank->sectors[i].size;
1076
1077                         reg_param_t reg_params[3];
1078                         armv4_5_algorithm_t armv4_5_info;
1079
1080                         armv4_5_info.common_magic = ARMV4_5_COMMON_MAGIC;
1081                         armv4_5_info.core_mode = ARMV4_5_MODE_SVC;
1082                         armv4_5_info.core_state = ARMV4_5_STATE_ARM;
1083
1084                         init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
1085                         buf_set_u32(reg_params[0].value, 0, 32, address);
1086
1087                         init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
1088                         buf_set_u32(reg_params[1].value, 0, 32, size);
1089
1090                         init_reg_param(&reg_params[2], "r2", 32, PARAM_IN_OUT);
1091                         buf_set_u32(reg_params[2].value, 0, 32, 0xff);
1092
1093                         if ((retval = target->type->run_algorithm(target, 0, NULL, 3, reg_params, cfi_info->erase_check_algorithm->address, cfi_info->erase_check_algorithm->address + 0x10, 10000, &armv4_5_info)) != ERROR_OK)
1094                                 return ERROR_FLASH_OPERATION_FAILED;
1095
1096                         if (buf_get_u32(reg_params[2].value, 0, 32) == 0xff)
1097                                 bank->sectors[i].is_erased = 1;
1098                         else
1099                                 bank->sectors[i].is_erased = 0;
1100
1101                         destroy_reg_param(&reg_params[0]);
1102                         destroy_reg_param(&reg_params[1]);
1103                         destroy_reg_param(&reg_params[2]);
1104                 }
1105         }
1106
1107         return ERROR_OK;
1108 }
1109
1110 int cfi_intel_protect_check(struct flash_bank_s *bank)
1111 {
1112         cfi_flash_bank_t *cfi_info = bank->driver_priv;
1113         cfi_intel_pri_ext_t *pri_ext = cfi_info->pri_ext;
1114         target_t *target = cfi_info->target;
1115         u8 command[8];
1116         int i;
1117
1118         /* check if block lock bits are supported on this device */
1119         if (!(pri_ext->blk_status_reg_mask & 0x1))
1120                 return ERROR_FLASH_OPERATION_FAILED;
1121
1122         cfi_command(bank, 0x90, command);
1123         target->type->write_memory(target, flash_address(bank, 0, 0x55), bank->bus_width, 1, command);
1124
1125         for (i = 0; i < bank->num_sectors; i++)
1126         {
1127                 u8 block_status = cfi_get_u8(bank, i, 0x2);
1128
1129                 if (block_status & 1)
1130                         bank->sectors[i].is_protected = 1;
1131                 else
1132                         bank->sectors[i].is_protected = 0;
1133         }
1134
1135         cfi_command(bank, 0xff, command);
1136         target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
1137
1138         return ERROR_OK;
1139 }
1140
1141 int cfi_protect_check(struct flash_bank_s *bank)
1142 {
1143         cfi_flash_bank_t *cfi_info = bank->driver_priv;
1144         target_t *target = cfi_info->target;
1145
1146         if (cfi_info->qry[0] != 'Q')
1147                 return ERROR_FLASH_BANK_NOT_PROBED;
1148
1149         switch(cfi_info->pri_id)
1150         {
1151                 case 1:
1152                 case 3:
1153                         return cfi_intel_protect_check(bank);
1154                         break;
1155                 default:
1156                         ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
1157                         break;
1158         }
1159
1160         return ERROR_OK;
1161 }
1162
1163 int cfi_info(struct flash_bank_s *bank, char *buf, int buf_size)
1164 {
1165         int printed;
1166         cfi_flash_bank_t *cfi_info = bank->driver_priv;
1167
1168         if (cfi_info->qry[0] == -1)
1169         {
1170                 printed = snprintf(buf, buf_size, "\ncfi flash bank not probed yet\n");
1171                 return ERROR_OK;
1172         }
1173
1174         printed = snprintf(buf, buf_size, "\ncfi information:\n");
1175         buf += printed;
1176         buf_size -= printed;
1177
1178         printed = snprintf(buf, buf_size, "qry: '%c%c%c', pri_id: 0x%4.4x, pri_addr: 0x%4.4x, alt_id: 0x%4.4x, alt_addr: 0x%4.4x\n", cfi_info->qry[0], cfi_info->qry[1], cfi_info->qry[2], cfi_info->pri_id, cfi_info->pri_addr, cfi_info->alt_id, cfi_info->alt_addr);
1179         buf += printed;
1180         buf_size -= printed;
1181
1182         printed = snprintf(buf, buf_size, "Vcc min: %1.1x.%1.1x, Vcc max: %1.1x.%1.1x, Vpp min: %1.1x.%1.1x, Vpp max: %1.1x.%1.1x\n", (cfi_info->vcc_min & 0xf0) >> 4, cfi_info->vcc_min & 0x0f,
1183         (cfi_info->vcc_max & 0xf0) >> 4, cfi_info->vcc_max & 0x0f,
1184         (cfi_info->vpp_min & 0xf0) >> 4, cfi_info->vpp_min & 0x0f,
1185         (cfi_info->vpp_max & 0xf0) >> 4, cfi_info->vpp_max & 0x0f);
1186         buf += printed;
1187         buf_size -= printed;
1188
1189         printed = snprintf(buf, buf_size, "typ. word write timeout: %u, typ. buf write timeout: %u, typ. block erase timeout: %u, typ. chip erase timeout: %u\n", 1 << cfi_info->word_write_timeout_typ, 1 << cfi_info->buf_write_timeout_typ,
1190                   1 << cfi_info->block_erase_timeout_typ, 1 << cfi_info->chip_erase_timeout_typ);
1191         buf += printed;
1192         buf_size -= printed;
1193
1194         printed = snprintf(buf, buf_size, "max. word write timeout: %u, max. buf write timeout: %u, max. block erase timeout: %u, max. chip erase timeout: %u\n", (1 << cfi_info->word_write_timeout_max) * (1 << cfi_info->word_write_timeout_typ),
1195                   (1 << cfi_info->buf_write_timeout_max) * (1 << cfi_info->buf_write_timeout_typ),
1196                   (1 << cfi_info->block_erase_timeout_max) * (1 << cfi_info->block_erase_timeout_typ),
1197                   (1 << cfi_info->chip_erase_timeout_max) * (1 << cfi_info->chip_erase_timeout_typ));
1198         buf += printed;
1199         buf_size -= printed;
1200
1201         printed = snprintf(buf, buf_size, "size: 0x%x, interface desc: %i, max buffer write size: %x\n", 1 << cfi_info->dev_size, cfi_info->interface_desc, cfi_info->max_buf_write_size);
1202         buf += printed;
1203         buf_size -= printed;
1204
1205         switch(cfi_info->pri_id)
1206         {
1207                 case 1:
1208                 case 3:
1209                         cfi_intel_info(bank, buf, buf_size);
1210                         break;
1211                 default:
1212                         ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
1213                         break;
1214         }
1215
1216         return ERROR_OK;
1217 }