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   1 /***************************************************************************
   2  *   Copyright (C) 2005, 2007 by Dominic Rath                              *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *   Copyright (C) 2009 Michael Schwingen                                  *
   5  *   michael@schwingen.org                                                 *
   6  *   Copyright (C) 2010 Øyvind Harboe <oyvind.harboe@zylin.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 #ifdef HAVE_CONFIG_H
  24 #include "config.h"
  25 #endif
  26
  27 #include "imp.h"
  28 #include "cfi.h"
  29 #include "non_cfi.h"
  30 #include <target/arm.h>
  31 #include <helper/binarybuffer.h>
  32 #include <target/algorithm.h>
  33
  34
  35 #define CFI_MAX_BUS_WIDTH       4
  36 #define CFI_MAX_CHIP_WIDTH      4
  37
  38 /* defines internal maximum size for code fragment in cfi_intel_write_block() */
  39 #define CFI_MAX_INTEL_CODESIZE 256
  40
  41 static struct cfi_unlock_addresses cfi_unlock_addresses[] =
  42 {
  43         [CFI_UNLOCK_555_2AA] = { .unlock1 = 0x555, .unlock2 = 0x2aa },
  44         [CFI_UNLOCK_5555_2AAA] = { .unlock1 = 0x5555, .unlock2 = 0x2aaa },
  45 };
  46
  47 /* CFI fixups foward declarations */
  48 static void cfi_fixup_0002_erase_regions(struct flash_bank *flash, void *param);
  49 static void cfi_fixup_0002_unlock_addresses(struct flash_bank *flash, void *param);
  50 static void cfi_fixup_atmel_reversed_erase_regions(struct flash_bank *flash, void *param);
  51
  52 /* fixup after reading cmdset 0002 primary query table */
  53 static const struct cfi_fixup cfi_0002_fixups[] = {
  54         {CFI_MFR_SST, 0x00D4, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_5555_2AAA]},
  55         {CFI_MFR_SST, 0x00D5, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_5555_2AAA]},
  56         {CFI_MFR_SST, 0x00D6, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_5555_2AAA]},
  57         {CFI_MFR_SST, 0x00D7, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_5555_2AAA]},
  58         {CFI_MFR_SST, 0x2780, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_5555_2AAA]},
  59         {CFI_MFR_ATMEL, 0x00C8, cfi_fixup_atmel_reversed_erase_regions, NULL},
  60         {CFI_MFR_FUJITSU, 0x226b, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_5555_2AAA]},
  61         {CFI_MFR_AMIC, 0xb31a, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_555_2AA]},
  62         {CFI_MFR_MX, 0x225b, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_555_2AA]},
  63         {CFI_MFR_AMD, 0x225b, cfi_fixup_0002_unlock_addresses, &cfi_unlock_addresses[CFI_UNLOCK_555_2AA]},
  64         {CFI_MFR_ANY, CFI_ID_ANY, cfi_fixup_0002_erase_regions, NULL},
  65         {0, 0, NULL, NULL}
  66 };
  67
  68 /* fixup after reading cmdset 0001 primary query table */
  69 static const struct cfi_fixup cfi_0001_fixups[] = {
  70         {0, 0, NULL, NULL}
  71 };
  72
  73 static void cfi_fixup(struct flash_bank *bank, const struct cfi_fixup *fixups)
  74 {
  75         struct cfi_flash_bank *cfi_info = bank->driver_priv;
  76         const struct cfi_fixup *f;
  77
  78         for (f = fixups; f->fixup; f++)
  79         {
  80                 if (((f->mfr == CFI_MFR_ANY) || (f->mfr == cfi_info->manufacturer)) &&
  81                         ((f->id  == CFI_ID_ANY)  || (f->id  == cfi_info->device_id)))
  82                 {
  83                         f->fixup(bank, f->param);
  84                 }
  85         }
  86 }
  87
  88 /* inline uint32_t flash_address(struct flash_bank *bank, int sector, uint32_t offset) */
  89 static __inline__ uint32_t flash_address(struct flash_bank *bank, int sector, uint32_t offset)
  90 {
  91         struct cfi_flash_bank *cfi_info = bank->driver_priv;
  92
  93         if (cfi_info->x16_as_x8) offset *= 2;
  94
  95         /* while the sector list isn't built, only accesses to sector 0 work */
  96         if (sector == 0)
  97                 return bank->base + offset * bank->bus_width;
  98         else
  99         {
 100                 if (!bank->sectors)
 101                 {
 102                         LOG_ERROR("BUG: sector list not yet built");
 103                         exit(-1);
 104                 }
 105                 return bank->base + bank->sectors[sector].offset + offset * bank->bus_width;
 106         }
 107
 108 }
 109
 110 static void cfi_command(struct flash_bank *bank, uint8_t cmd, uint8_t *cmd_buf)
 111 {
 112         int i;
 113
 114         /* clear whole buffer, to ensure bits that exceed the bus_width
 115          * are set to zero
 116          */
 117         for (i = 0; i < CFI_MAX_BUS_WIDTH; i++)
 118                 cmd_buf[i] = 0;
 119
 120         if (bank->target->endianness == TARGET_LITTLE_ENDIAN)
 121         {
 122                 for (i = bank->bus_width; i > 0; i--)
 123                 {
 124                         *cmd_buf++ = (i & (bank->chip_width - 1)) ? 0x0 : cmd;
 125                 }
 126         }
 127         else
 128         {
 129                 for (i = 1; i <= bank->bus_width; i++)
 130                 {
 131                         *cmd_buf++ = (i & (bank->chip_width - 1)) ? 0x0 : cmd;
 132                 }
 133         }
 134 }
 135
 136 static int cfi_send_command(struct flash_bank *bank, uint8_t cmd, uint32_t address)
 137 {
 138     uint8_t command[CFI_MAX_BUS_WIDTH];
 139
 140     cfi_command(bank, cmd, command);
 141     return target_write_memory(bank->target, address, bank->bus_width, 1, command);
 142 }
 143
 144 /* read unsigned 8-bit value from the bank
 145  * flash banks are expected to be made of similar chips
 146  * the query result should be the same for all
 147  */
 148 static uint8_t cfi_query_u8(struct flash_bank *bank, int sector, uint32_t offset)
 149 {
 150         struct target *target = bank->target;
 151         uint8_t data[CFI_MAX_BUS_WIDTH];
 152
 153         target_read_memory(target, flash_address(bank, sector, offset), bank->bus_width, 1, data);
 154
 155         if (bank->target->endianness == TARGET_LITTLE_ENDIAN)
 156                 return data[0];
 157         else
 158                 return data[bank->bus_width - 1];
 159 }
 160
 161 /* read unsigned 8-bit value from the bank
 162  * in case of a bank made of multiple chips,
 163  * the individual values are ORed
 164  */
 165 static uint8_t cfi_get_u8(struct flash_bank *bank, int sector, uint32_t offset)
 166 {
 167         struct target *target = bank->target;
 168         uint8_t data[CFI_MAX_BUS_WIDTH];
 169         int i;
 170
 171         target_read_memory(target, flash_address(bank, sector, offset), bank->bus_width, 1, data);
 172
 173         if (bank->target->endianness == TARGET_LITTLE_ENDIAN)
 174         {
 175                 for (i = 0; i < bank->bus_width / bank->chip_width; i++)
 176                         data[0] |= data[i];
 177
 178                 return data[0];
 179         }
 180         else
 181         {
 182                 uint8_t value = 0;
 183                 for (i = 0; i < bank->bus_width / bank->chip_width; i++)
 184                         value |= data[bank->bus_width - 1 - i];
 185
 186                 return value;
 187         }
 188 }
 189
 190 static uint16_t cfi_query_u16(struct flash_bank *bank, int sector, uint32_t offset)
 191 {
 192         struct target *target = bank->target;
 193         struct cfi_flash_bank *cfi_info = bank->driver_priv;
 194         uint8_t data[CFI_MAX_BUS_WIDTH * 2];
 195
 196         if (cfi_info->x16_as_x8)
 197         {
 198                 uint8_t i;
 199                 for (i = 0;i < 2;i++)
 200                         target_read_memory(target, flash_address(bank, sector, offset + i), bank->bus_width, 1,
 201                                 &data[i*bank->bus_width]);
 202         }
 203         else
 204                 target_read_memory(target, flash_address(bank, sector, offset), bank->bus_width, 2, data);
 205
 206         if (bank->target->endianness == TARGET_LITTLE_ENDIAN)
 207                 return data[0] | data[bank->bus_width] << 8;
 208         else
 209                 return data[bank->bus_width - 1] | data[(2 * bank->bus_width) - 1] << 8;
 210 }
 211
 212 static uint32_t cfi_query_u32(struct flash_bank *bank, int sector, uint32_t offset)
 213 {
 214         struct target *target = bank->target;
 215         struct cfi_flash_bank *cfi_info = bank->driver_priv;
 216         uint8_t data[CFI_MAX_BUS_WIDTH * 4];
 217
 218         if (cfi_info->x16_as_x8)
 219         {
 220                 uint8_t i;
 221                 for (i = 0;i < 4;i++)
 222                         target_read_memory(target, flash_address(bank, sector, offset + i), bank->bus_width, 1,
 223                                 &data[i*bank->bus_width]);
 224         }
 225         else
 226                 target_read_memory(target, flash_address(bank, sector, offset), bank->bus_width, 4, data);
 227
 228         if (bank->target->endianness == TARGET_LITTLE_ENDIAN)
 229                 return data[0] | data[bank->bus_width] << 8 | data[bank->bus_width * 2] << 16 | data[bank->bus_width * 3] << 24;
 230         else
 231                 return data[bank->bus_width - 1] | data[(2* bank->bus_width) - 1] << 8 |
 232                                 data[(3 * bank->bus_width) - 1] << 16 | data[(4 * bank->bus_width) - 1] << 24;
 233 }
 234
 235 static void cfi_intel_clear_status_register(struct flash_bank *bank)
 236 {
 237         struct target *target = bank->target;
 238
 239         if (target->state != TARGET_HALTED)
 240         {
 241                 LOG_ERROR("BUG: attempted to clear status register while target wasn't halted");
 242                 exit(-1);
 243         }
 244
 245         cfi_send_command(bank, 0x50, flash_address(bank, 0, 0x0));
 246 }
 247
 248 static uint8_t cfi_intel_wait_status_busy(struct flash_bank *bank, int timeout)
 249 {
 250         uint8_t status;
 251
 252         while ((!((status = cfi_get_u8(bank, 0, 0x0)) & 0x80)) && (timeout-- > 0))
 253         {
 254                 LOG_DEBUG("status: 0x%x", status);
 255                 alive_sleep(1);
 256         }
 257
 258         /* mask out bit 0 (reserved) */
 259         status = status & 0xfe;
 260
 261         LOG_DEBUG("status: 0x%x", status);
 262
 263         if ((status & 0x80) != 0x80)
 264         {
 265                 LOG_ERROR("timeout while waiting for WSM to become ready");
 266         }
 267         else if (status != 0x80)
 268         {
 269                 LOG_ERROR("status register: 0x%x", status);
 270                 if (status & 0x2)
 271                         LOG_ERROR("Block Lock-Bit Detected, Operation Abort");
 272                 if (status & 0x4)
 273                         LOG_ERROR("Program suspended");
 274                 if (status & 0x8)
 275                         LOG_ERROR("Low Programming Voltage Detected, Operation Aborted");
 276                 if (status & 0x10)
 277                         LOG_ERROR("Program Error / Error in Setting Lock-Bit");
 278                 if (status & 0x20)
 279                         LOG_ERROR("Error in Block Erasure or Clear Lock-Bits");
 280                 if (status & 0x40)
 281                         LOG_ERROR("Block Erase Suspended");
 282
 283                 cfi_intel_clear_status_register(bank);
 284         }
 285
 286         return status;
 287 }
 288
 289 static int cfi_spansion_wait_status_busy(struct flash_bank *bank, int timeout)
 290 {
 291         uint8_t status, oldstatus;
 292         struct cfi_flash_bank *cfi_info = bank->driver_priv;
 293
 294         oldstatus = cfi_get_u8(bank, 0, 0x0);
 295
 296         do {
 297                 status = cfi_get_u8(bank, 0, 0x0);
 298                 if ((status ^ oldstatus) & 0x40) {
 299                         if (status & cfi_info->status_poll_mask & 0x20) {
 300                                 oldstatus = cfi_get_u8(bank, 0, 0x0);
 301                                 status = cfi_get_u8(bank, 0, 0x0);
 302                                 if ((status ^ oldstatus) & 0x40) {
 303                                         LOG_ERROR("dq5 timeout, status: 0x%x", status);
 304                                         return(ERROR_FLASH_OPERATION_FAILED);
 305                                 } else {
 306                                         LOG_DEBUG("status: 0x%x", status);
 307                                         return(ERROR_OK);
 308                                 }
 309                         }
 310                 } else { /* no toggle: finished, OK */
 311                         LOG_DEBUG("status: 0x%x", status);
 312                         return(ERROR_OK);
 313                 }
 314
 315                 oldstatus = status;
 316                 alive_sleep(1);
 317         } while (timeout-- > 0);
 318
 319         LOG_ERROR("timeout, status: 0x%x", status);
 320
 321         return(ERROR_FLASH_BUSY);
 322 }
 323
 324 static int cfi_read_intel_pri_ext(struct flash_bank *bank)
 325 {
 326         int retval;
 327         struct cfi_flash_bank *cfi_info = bank->driver_priv;
 328         struct cfi_intel_pri_ext *pri_ext = malloc(sizeof(struct cfi_intel_pri_ext));
 329
 330         cfi_info->pri_ext = pri_ext;
 331
 332         pri_ext->pri[0] = cfi_query_u8(bank, 0, cfi_info->pri_addr + 0);
 333         pri_ext->pri[1] = cfi_query_u8(bank, 0, cfi_info->pri_addr + 1);
 334         pri_ext->pri[2] = cfi_query_u8(bank, 0, cfi_info->pri_addr + 2);
 335
 336         if ((pri_ext->pri[0] != 'P') || (pri_ext->pri[1] != 'R') || (pri_ext->pri[2] != 'I'))
 337         {
 338                 if ((retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0))) != ERROR_OK)
 339                 {
 340                         return retval;
 341                 }
 342                 if ((retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0))) != ERROR_OK)
 343                 {
 344                         return retval;
 345                 }
 346                 LOG_ERROR("Could not read bank flash bank information");
 347                 return ERROR_FLASH_BANK_INVALID;
 348         }
 349
 350         pri_ext->major_version = cfi_query_u8(bank, 0, cfi_info->pri_addr + 3);
 351         pri_ext->minor_version = cfi_query_u8(bank, 0, cfi_info->pri_addr + 4);
 352
 353         LOG_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);
 354
 355         pri_ext->feature_support = cfi_query_u32(bank, 0, cfi_info->pri_addr + 5);
 356         pri_ext->suspend_cmd_support = cfi_query_u8(bank, 0, cfi_info->pri_addr + 9);
 357         pri_ext->blk_status_reg_mask = cfi_query_u16(bank, 0, cfi_info->pri_addr + 0xa);
 358
 359         LOG_DEBUG("feature_support: 0x%" PRIx32 ", suspend_cmd_support: 0x%x, blk_status_reg_mask: 0x%x",
 360                   pri_ext->feature_support,
 361                   pri_ext->suspend_cmd_support,
 362                   pri_ext->blk_status_reg_mask);
 363
 364         pri_ext->vcc_optimal = cfi_query_u8(bank, 0, cfi_info->pri_addr + 0xc);
 365         pri_ext->vpp_optimal = cfi_query_u8(bank, 0, cfi_info->pri_addr + 0xd);
 366
 367         LOG_DEBUG("Vcc opt: %x.%x, Vpp opt: %u.%x",
 368                   (pri_ext->vcc_optimal & 0xf0) >> 4, pri_ext->vcc_optimal & 0x0f,
 369                   (pri_ext->vpp_optimal & 0xf0) >> 4, pri_ext->vpp_optimal & 0x0f);
 370
 371         pri_ext->num_protection_fields = cfi_query_u8(bank, 0, cfi_info->pri_addr + 0xe);
 372         if (pri_ext->num_protection_fields != 1)
 373         {
 374                 LOG_WARNING("expected one protection register field, but found %i", pri_ext->num_protection_fields);
 375         }
 376
 377         pri_ext->prot_reg_addr = cfi_query_u16(bank, 0, cfi_info->pri_addr + 0xf);
 378         pri_ext->fact_prot_reg_size = cfi_query_u8(bank, 0, cfi_info->pri_addr + 0x11);
 379         pri_ext->user_prot_reg_size = cfi_query_u8(bank, 0, cfi_info->pri_addr + 0x12);
 380
 381         LOG_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);
 382
 383         return ERROR_OK;
 384 }
 385
 386 static int cfi_read_spansion_pri_ext(struct flash_bank *bank)
 387 {
 388         int retval;
 389         struct cfi_flash_bank *cfi_info = bank->driver_priv;
 390         struct cfi_spansion_pri_ext *pri_ext = malloc(sizeof(struct cfi_spansion_pri_ext));
 391
 392         cfi_info->pri_ext = pri_ext;
 393
 394         pri_ext->pri[0] = cfi_query_u8(bank, 0, cfi_info->pri_addr + 0);
 395         pri_ext->pri[1] = cfi_query_u8(bank, 0, cfi_info->pri_addr + 1);
 396         pri_ext->pri[2] = cfi_query_u8(bank, 0, cfi_info->pri_addr + 2);
 397
 398         if ((pri_ext->pri[0] != 'P') || (pri_ext->pri[1] != 'R') || (pri_ext->pri[2] != 'I'))
 399         {
 400                 if ((retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0))) != ERROR_OK)
 401                 {
 402                         return retval;
 403                 }
 404                 LOG_ERROR("Could not read spansion bank information");
 405                 return ERROR_FLASH_BANK_INVALID;
 406         }
 407
 408         pri_ext->major_version = cfi_query_u8(bank, 0, cfi_info->pri_addr + 3);
 409         pri_ext->minor_version = cfi_query_u8(bank, 0, cfi_info->pri_addr + 4);
 410
 411         LOG_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);
 412
 413         pri_ext->SiliconRevision = cfi_query_u8(bank, 0, cfi_info->pri_addr + 5);
 414         pri_ext->EraseSuspend    = cfi_query_u8(bank, 0, cfi_info->pri_addr + 6);
 415         pri_ext->BlkProt         = cfi_query_u8(bank, 0, cfi_info->pri_addr + 7);
 416         pri_ext->TmpBlkUnprotect = cfi_query_u8(bank, 0, cfi_info->pri_addr + 8);
 417         pri_ext->BlkProtUnprot   = cfi_query_u8(bank, 0, cfi_info->pri_addr + 9);
 418         pri_ext->SimultaneousOps = cfi_query_u8(bank, 0, cfi_info->pri_addr + 10);
 419         pri_ext->BurstMode       = cfi_query_u8(bank, 0, cfi_info->pri_addr + 11);
 420         pri_ext->PageMode        = cfi_query_u8(bank, 0, cfi_info->pri_addr + 12);
 421         pri_ext->VppMin          = cfi_query_u8(bank, 0, cfi_info->pri_addr + 13);
 422         pri_ext->VppMax          = cfi_query_u8(bank, 0, cfi_info->pri_addr + 14);
 423         pri_ext->TopBottom       = cfi_query_u8(bank, 0, cfi_info->pri_addr + 15);
 424
 425         LOG_DEBUG("Silicon Revision: 0x%x, Erase Suspend: 0x%x, Block protect: 0x%x", pri_ext->SiliconRevision,
 426               pri_ext->EraseSuspend, pri_ext->BlkProt);
 427
 428         LOG_DEBUG("Temporary Unprotect: 0x%x, Block Protect Scheme: 0x%x, Simultaneous Ops: 0x%x", pri_ext->TmpBlkUnprotect,
 429               pri_ext->BlkProtUnprot, pri_ext->SimultaneousOps);
 430
 431         LOG_DEBUG("Burst Mode: 0x%x, Page Mode: 0x%x, ", pri_ext->BurstMode, pri_ext->PageMode);
 432
 433
 434         LOG_DEBUG("Vpp min: %u.%x, Vpp max: %u.%x",
 435                   (pri_ext->VppMin & 0xf0) >> 4, pri_ext->VppMin & 0x0f,
 436                   (pri_ext->VppMax & 0xf0) >> 4, pri_ext->VppMax & 0x0f);
 437
 438         LOG_DEBUG("WP# protection 0x%x", pri_ext->TopBottom);
 439
 440         /* default values for implementation specific workarounds */
 441         pri_ext->_unlock1 = cfi_unlock_addresses[CFI_UNLOCK_555_2AA].unlock1;
 442         pri_ext->_unlock2 = cfi_unlock_addresses[CFI_UNLOCK_555_2AA].unlock2;
 443         pri_ext->_reversed_geometry = 0;
 444
 445         return ERROR_OK;
 446 }
 447
 448 static int cfi_read_atmel_pri_ext(struct flash_bank *bank)
 449 {
 450         int retval;
 451         struct cfi_atmel_pri_ext atmel_pri_ext;
 452         struct cfi_flash_bank *cfi_info = bank->driver_priv;
 453         struct cfi_spansion_pri_ext *pri_ext = malloc(sizeof(struct cfi_spansion_pri_ext));
 454
 455         /* ATMEL devices use the same CFI primary command set (0x2) as AMD/Spansion,
 456          * but a different primary extended query table.
 457          * We read the atmel table, and prepare a valid AMD/Spansion query table.
 458          */
 459
 460         memset(pri_ext, 0, sizeof(struct cfi_spansion_pri_ext));
 461
 462         cfi_info->pri_ext = pri_ext;
 463
 464         atmel_pri_ext.pri[0] = cfi_query_u8(bank, 0, cfi_info->pri_addr + 0);
 465         atmel_pri_ext.pri[1] = cfi_query_u8(bank, 0, cfi_info->pri_addr + 1);
 466         atmel_pri_ext.pri[2] = cfi_query_u8(bank, 0, cfi_info->pri_addr + 2);
 467
 468         if ((atmel_pri_ext.pri[0] != 'P') || (atmel_pri_ext.pri[1] != 'R') || (atmel_pri_ext.pri[2] != 'I'))
 469         {
 470                 if ((retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0))) != ERROR_OK)
 471                 {
 472                         return retval;
 473                 }
 474                 LOG_ERROR("Could not read atmel bank information");
 475                 return ERROR_FLASH_BANK_INVALID;
 476         }
 477
 478         pri_ext->pri[0] = atmel_pri_ext.pri[0];
 479         pri_ext->pri[1] = atmel_pri_ext.pri[1];
 480         pri_ext->pri[2] = atmel_pri_ext.pri[2];
 481
 482         atmel_pri_ext.major_version = cfi_query_u8(bank, 0, cfi_info->pri_addr + 3);
 483         atmel_pri_ext.minor_version = cfi_query_u8(bank, 0, cfi_info->pri_addr + 4);
 484
 485         LOG_DEBUG("pri: '%c%c%c', version: %c.%c", atmel_pri_ext.pri[0], atmel_pri_ext.pri[1], atmel_pri_ext.pri[2], atmel_pri_ext.major_version, atmel_pri_ext.minor_version);
 486
 487         pri_ext->major_version = atmel_pri_ext.major_version;
 488         pri_ext->minor_version = atmel_pri_ext.minor_version;
 489
 490         atmel_pri_ext.features = cfi_query_u8(bank, 0, cfi_info->pri_addr + 5);
 491         atmel_pri_ext.bottom_boot = cfi_query_u8(bank, 0, cfi_info->pri_addr + 6);
 492         atmel_pri_ext.burst_mode = cfi_query_u8(bank, 0, cfi_info->pri_addr + 7);
 493         atmel_pri_ext.page_mode = cfi_query_u8(bank, 0, cfi_info->pri_addr + 8);
 494
 495         LOG_DEBUG("features: 0x%2.2x, bottom_boot: 0x%2.2x, burst_mode: 0x%2.2x, page_mode: 0x%2.2x",
 496                 atmel_pri_ext.features, atmel_pri_ext.bottom_boot, atmel_pri_ext.burst_mode, atmel_pri_ext.page_mode);
 497
 498         if (atmel_pri_ext.features & 0x02)
 499                 pri_ext->EraseSuspend = 2;
 500
 501         if (atmel_pri_ext.bottom_boot)
 502                 pri_ext->TopBottom = 2;
 503         else
 504                 pri_ext->TopBottom = 3;
 505
 506         pri_ext->_unlock1 = cfi_unlock_addresses[CFI_UNLOCK_555_2AA].unlock1;
 507         pri_ext->_unlock2 = cfi_unlock_addresses[CFI_UNLOCK_555_2AA].unlock2;
 508
 509         return ERROR_OK;
 510 }
 511
 512 static int cfi_read_0002_pri_ext(struct flash_bank *bank)
 513 {
 514         struct cfi_flash_bank *cfi_info = bank->driver_priv;
 515
 516         if (cfi_info->manufacturer == CFI_MFR_ATMEL)
 517         {
 518                 return cfi_read_atmel_pri_ext(bank);
 519         }
 520         else
 521         {
 522                 return cfi_read_spansion_pri_ext(bank);
 523         }
 524 }
 525
 526 static int cfi_spansion_info(struct flash_bank *bank, char *buf, int buf_size)
 527 {
 528         int printed;
 529         struct cfi_flash_bank *cfi_info = bank->driver_priv;
 530         struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
 531
 532         printed = snprintf(buf, buf_size, "\nSpansion primary algorithm extend information:\n");
 533         buf += printed;
 534         buf_size -= printed;
 535
 536         printed = snprintf(buf, buf_size, "pri: '%c%c%c', version: %c.%c\n", pri_ext->pri[0],
 537                            pri_ext->pri[1], pri_ext->pri[2],
 538                            pri_ext->major_version, pri_ext->minor_version);
 539         buf += printed;
 540         buf_size -= printed;
 541
 542         printed = snprintf(buf, buf_size, "Silicon Rev.: 0x%x, Address Sensitive unlock: 0x%x\n",
 543                            (pri_ext->SiliconRevision) >> 2,
 544                            (pri_ext->SiliconRevision) & 0x03);
 545         buf += printed;
 546         buf_size -= printed;
 547
 548         printed = snprintf(buf, buf_size, "Erase Suspend: 0x%x, Sector Protect: 0x%x\n",
 549                            pri_ext->EraseSuspend,
 550                            pri_ext->BlkProt);
 551         buf += printed;
 552         buf_size -= printed;
 553
 554         printed = snprintf(buf, buf_size, "VppMin: %u.%x, VppMax: %u.%x\n",
 555                 (pri_ext->VppMin & 0xf0) >> 4, pri_ext->VppMin & 0x0f,
 556                 (pri_ext->VppMax & 0xf0) >> 4, pri_ext->VppMax & 0x0f);
 557
 558         return ERROR_OK;
 559 }
 560
 561 static int cfi_intel_info(struct flash_bank *bank, char *buf, int buf_size)
 562 {
 563         int printed;
 564         struct cfi_flash_bank *cfi_info = bank->driver_priv;
 565         struct cfi_intel_pri_ext *pri_ext = cfi_info->pri_ext;
 566
 567         printed = snprintf(buf, buf_size, "\nintel primary algorithm extend information:\n");
 568         buf += printed;
 569         buf_size -= printed;
 570
 571         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);
 572         buf += printed;
 573         buf_size -= printed;
 574
 575         printed = snprintf(buf, buf_size, "feature_support: 0x%" PRIx32 ", 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);
 576         buf += printed;
 577         buf_size -= printed;
 578
 579         printed = snprintf(buf, buf_size, "Vcc opt: %x.%x, Vpp opt: %u.%x\n",
 580                 (pri_ext->vcc_optimal & 0xf0) >> 4, pri_ext->vcc_optimal & 0x0f,
 581                 (pri_ext->vpp_optimal & 0xf0) >> 4, pri_ext->vpp_optimal & 0x0f);
 582         buf += printed;
 583         buf_size -= printed;
 584
 585         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);
 586
 587         return ERROR_OK;
 588 }
 589
 590 /* flash_bank cfi <base> <size> <chip_width> <bus_width> <target#> [options]
 591  */
 592 FLASH_BANK_COMMAND_HANDLER(cfi_flash_bank_command)
 593 {
 594         struct cfi_flash_bank *cfi_info;
 595
 596         if (CMD_ARGC < 6)
 597         {
 598                 LOG_WARNING("incomplete flash_bank cfi configuration");
 599                 return ERROR_FLASH_BANK_INVALID;
 600         }
 601
 602         if ((bank->chip_width > CFI_MAX_CHIP_WIDTH)
 603                         || (bank->bus_width > CFI_MAX_BUS_WIDTH))
 604         {
 605                 LOG_ERROR("chip and bus width have to specified in bytes");
 606                 return ERROR_FLASH_BANK_INVALID;
 607         }
 608
 609         cfi_info = malloc(sizeof(struct cfi_flash_bank));
 610         cfi_info->probed = 0;
 611         bank->driver_priv = cfi_info;
 612
 613         cfi_info->write_algorithm = NULL;
 614
 615         cfi_info->x16_as_x8 = 0;
 616         cfi_info->jedec_probe = 0;
 617         cfi_info->not_cfi = 0;
 618
 619         for (unsigned i = 6; i < CMD_ARGC; i++)
 620         {
 621                 if (strcmp(CMD_ARGV[i], "x16_as_x8") == 0)
 622                 {
 623                         cfi_info->x16_as_x8 = 1;
 624                 }
 625                 else if (strcmp(CMD_ARGV[i], "jedec_probe") == 0)
 626                 {
 627                         cfi_info->jedec_probe = 1;
 628                 }
 629         }
 630
 631         cfi_info->write_algorithm = NULL;
 632
 633         /* bank wasn't probed yet */
 634         cfi_info->qry[0] = -1;
 635
 636         return ERROR_OK;
 637 }
 638
 639 static int cfi_intel_erase(struct flash_bank *bank, int first, int last)
 640 {
 641         int retval;
 642         struct cfi_flash_bank *cfi_info = bank->driver_priv;
 643         int i;
 644
 645         cfi_intel_clear_status_register(bank);
 646
 647         for (i = first; i <= last; i++)
 648         {
 649                 if ((retval = cfi_send_command(bank, 0x20, flash_address(bank, i, 0x0))) != ERROR_OK)
 650                 {
 651                         return retval;
 652                 }
 653
 654                 if ((retval = cfi_send_command(bank, 0xd0, flash_address(bank, i, 0x0))) != ERROR_OK)
 655                 {
 656                         return retval;
 657                 }
 658
 659                 if (cfi_intel_wait_status_busy(bank, 1000 * (1 << cfi_info->block_erase_timeout_typ)) == 0x80)
 660                         bank->sectors[i].is_erased = 1;
 661                 else
 662                 {
 663                         if ((retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0))) != ERROR_OK)
 664                         {
 665                                 return retval;
 666                         }
 667
 668                         LOG_ERROR("couldn't erase block %i of flash bank at base 0x%" PRIx32 , i, bank->base);
 669                         return ERROR_FLASH_OPERATION_FAILED;
 670                 }
 671         }
 672
 673         return cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0));
 674 }
 675
 676 static int cfi_spansion_erase(struct flash_bank *bank, int first, int last)
 677 {
 678         int retval;
 679         struct cfi_flash_bank *cfi_info = bank->driver_priv;
 680         struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
 681         int i;
 682
 683         for (i = first; i <= last; i++)
 684         {
 685                 if ((retval = cfi_send_command(bank, 0xaa, flash_address(bank, 0, pri_ext->_unlock1))) != ERROR_OK)
 686                 {
 687                         return retval;
 688                 }
 689
 690                 if ((retval = cfi_send_command(bank, 0x55, flash_address(bank, 0, pri_ext->_unlock2))) != ERROR_OK)
 691                 {
 692                         return retval;
 693                 }
 694
 695                 if ((retval = cfi_send_command(bank, 0x80, flash_address(bank, 0, pri_ext->_unlock1))) != ERROR_OK)
 696                 {
 697                         return retval;
 698                 }
 699
 700                 if ((retval = cfi_send_command(bank, 0xaa, flash_address(bank, 0, pri_ext->_unlock1))) != ERROR_OK)
 701                 {
 702                         return retval;
 703                 }
 704
 705                 if ((retval = cfi_send_command(bank, 0x55, flash_address(bank, 0, pri_ext->_unlock2))) != ERROR_OK)
 706                 {
 707                         return retval;
 708                 }
 709
 710                 if ((retval = cfi_send_command(bank, 0x30, flash_address(bank, i, 0x0))) != ERROR_OK)
 711                 {
 712                         return retval;
 713                 }
 714
 715                 if (cfi_spansion_wait_status_busy(bank, 1000 * (1 << cfi_info->block_erase_timeout_typ)) == ERROR_OK)
 716                         bank->sectors[i].is_erased = 1;
 717                 else
 718                 {
 719                         if ((retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0))) != ERROR_OK)
 720                         {
 721                                 return retval;
 722                         }
 723
 724                         LOG_ERROR("couldn't erase block %i of flash bank at base 0x%" PRIx32, i, bank->base);
 725                         return ERROR_FLASH_OPERATION_FAILED;
 726                 }
 727         }
 728
 729         return  cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0));
 730 }
 731
 732 static int cfi_erase(struct flash_bank *bank, int first, int last)
 733 {
 734         struct cfi_flash_bank *cfi_info = bank->driver_priv;
 735
 736         if (bank->target->state != TARGET_HALTED)
 737         {
 738                 LOG_ERROR("Target not halted");
 739                 return ERROR_TARGET_NOT_HALTED;
 740         }
 741
 742         if ((first < 0) || (last < first) || (last >= bank->num_sectors))
 743         {
 744                 return ERROR_FLASH_SECTOR_INVALID;
 745         }
 746
 747         if (cfi_info->qry[0] != 'Q')
 748                 return ERROR_FLASH_BANK_NOT_PROBED;
 749
 750         switch (cfi_info->pri_id)
 751         {
 752                 case 1:
 753                 case 3:
 754                         return cfi_intel_erase(bank, first, last);
 755                         break;
 756                 case 2:
 757                         return cfi_spansion_erase(bank, first, last);
 758                         break;
 759                 default:
 760                         LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
 761                         break;
 762         }
 763
 764         return ERROR_OK;
 765 }
 766
 767 static int cfi_intel_protect(struct flash_bank *bank, int set, int first, int last)
 768 {
 769         int retval;
 770         struct cfi_flash_bank *cfi_info = bank->driver_priv;
 771         struct cfi_intel_pri_ext *pri_ext = cfi_info->pri_ext;
 772         struct target *target = bank->target; /* FIXME: to be removed */
 773         uint8_t command[CFI_MAX_BUS_WIDTH]; /* FIXME: to be removed */
 774         int retry = 0;
 775         int i;
 776
 777         /* if the device supports neither legacy lock/unlock (bit 3) nor
 778          * instant individual block locking (bit 5).
 779          */
 780         if (!(pri_ext->feature_support & 0x28))
 781                 return ERROR_FLASH_OPERATION_FAILED;
 782
 783         cfi_intel_clear_status_register(bank);
 784
 785         for (i = first; i <= last; i++)
 786         {
 787                 cfi_command(bank, 0x60, command); /* FIXME: to be removed */
 788                 LOG_DEBUG("address: 0x%4.4" PRIx32 ", command: 0x%4.4" PRIx32, flash_address(bank, i, 0x0), target_buffer_get_u32(target, command));
 789                 if ((retval = cfi_send_command(bank, 0x60, flash_address(bank, i, 0x0))) != ERROR_OK)
 790                 {
 791                         return retval;
 792                 }
 793                 if (set)
 794                 {
 795                         cfi_command(bank, 0x01, command); /* FIXME: to be removed */
 796                         LOG_DEBUG("address: 0x%4.4" PRIx32 ", command: 0x%4.4" PRIx32 , flash_address(bank, i, 0x0), target_buffer_get_u32(target, command));
 797                         if ((retval = cfi_send_command(bank, 0x01, flash_address(bank, i, 0x0))) != ERROR_OK)
 798                         {
 799                                 return retval;
 800                         }
 801                         bank->sectors[i].is_protected = 1;
 802                 }
 803                 else
 804                 {
 805                         cfi_command(bank, 0xd0, command); /* FIXME: to be removed */
 806                         LOG_DEBUG("address: 0x%4.4" PRIx32 ", command: 0x%4.4" PRIx32, flash_address(bank, i, 0x0), target_buffer_get_u32(target, command));
 807                         if ((retval = cfi_send_command(bank, 0xd0, flash_address(bank, i, 0x0))) != ERROR_OK)
 808                         {
 809                                 return retval;
 810                         }
 811                         bank->sectors[i].is_protected = 0;
 812                 }
 813
 814                 /* instant individual block locking doesn't require reading of the status register */
 815                 if (!(pri_ext->feature_support & 0x20))
 816                 {
 817                         /* Clear lock bits operation may take up to 1.4s */
 818                         cfi_intel_wait_status_busy(bank, 1400);
 819                 }
 820                 else
 821                 {
 822                         uint8_t block_status;
 823                         /* read block lock bit, to verify status */
 824                         if ((retval = cfi_send_command(bank, 0x90, flash_address(bank, 0, 0x55))) != ERROR_OK)
 825                         {
 826                                 return retval;
 827                         }
 828                         block_status = cfi_get_u8(bank, i, 0x2);
 829
 830                         if ((block_status & 0x1) != set)
 831                         {
 832                                 LOG_ERROR("couldn't change block lock status (set = %i, block_status = 0x%2.2x)", set, block_status);
 833                                 if ((retval = cfi_send_command(bank, 0x70, flash_address(bank, 0, 0x55))) != ERROR_OK)
 834                                 {
 835                                         return retval;
 836                                 }
 837                                 cfi_intel_wait_status_busy(bank, 10);
 838
 839                                 if (retry > 10)
 840                                         return ERROR_FLASH_OPERATION_FAILED;
 841                                 else
 842                                 {
 843                                         i--;
 844                                         retry++;
 845                                 }
 846                         }
 847                 }
 848         }
 849
 850         /* if the device doesn't support individual block lock bits set/clear,
 851          * all blocks have been unlocked in parallel, so we set those that should be protected
 852          */
 853         if ((!set) && (!(pri_ext->feature_support & 0x20)))
 854         {
 855                 for (i = 0; i < bank->num_sectors; i++)
 856                 {
 857                         if (bank->sectors[i].is_protected == 1)
 858                         {
 859                                 cfi_intel_clear_status_register(bank);
 860
 861                                 if ((retval = cfi_send_command(bank, 0x60, flash_address(bank, i, 0x0))) != ERROR_OK)
 862                                 {
 863                                         return retval;
 864                                 }
 865
 866                                 if ((retval = cfi_send_command(bank, 0x01, flash_address(bank, i, 0x0))) != ERROR_OK)
 867                                 {
 868                                         return retval;
 869                                 }
 870
 871                                 cfi_intel_wait_status_busy(bank, 100);
 872                         }
 873                 }
 874         }
 875
 876         return cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0));
 877 }
 878
 879 static int cfi_protect(struct flash_bank *bank, int set, int first, int last)
 880 {
 881         struct cfi_flash_bank *cfi_info = bank->driver_priv;
 882
 883         if (bank->target->state != TARGET_HALTED)
 884         {
 885                 LOG_ERROR("Target not halted");
 886                 return ERROR_TARGET_NOT_HALTED;
 887         }
 888
 889         if ((first < 0) || (last < first) || (last >= bank->num_sectors))
 890         {
 891                 LOG_ERROR("Invalid sector range");
 892                 return ERROR_FLASH_SECTOR_INVALID;
 893         }
 894
 895         if (cfi_info->qry[0] != 'Q')
 896                 return ERROR_FLASH_BANK_NOT_PROBED;
 897
 898         switch (cfi_info->pri_id)
 899         {
 900                 case 1:
 901                 case 3:
 902                         return cfi_intel_protect(bank, set, first, last);
 903                         break;
 904                 default:
 905                         LOG_ERROR("protect: cfi primary command set %i unsupported", cfi_info->pri_id);
 906                         return ERROR_FAIL;
 907         }
 908 }
 909
 910 /* FIXME Replace this by a simple memcpy() - still unsure about sideeffects */
 911 static void cfi_add_byte(struct flash_bank *bank, uint8_t *word, uint8_t byte)
 912 {
 913         /* struct target *target = bank->target; */
 914
 915         int i;
 916
 917         /* NOTE:
 918          * The data to flash must not be changed in endian! We write a bytestrem in
 919          * target byte order already. Only the control and status byte lane of the flash
 920          * WSM is interpreted by the CPU in different ways, when read a uint16_t or uint32_t
 921          * word (data seems to be in the upper or lower byte lane for uint16_t accesses).
 922          */
 923
 924 #if 0
 925         if (target->endianness == TARGET_LITTLE_ENDIAN)
 926         {
 927 #endif
 928                 /* shift bytes */
 929                 for (i = 0; i < bank->bus_width - 1; i++)
 930                         word[i] = word[i + 1];
 931                 word[bank->bus_width - 1] = byte;
 932 #if 0
 933         }
 934         else
 935         {
 936                 /* shift bytes */
 937                 for (i = bank->bus_width - 1; i > 0; i--)
 938                         word[i] = word[i - 1];
 939                 word[0] = byte;
 940         }
 941 #endif
 942 }
 943
 944 /* Convert code image to target endian */
 945 /* FIXME create general block conversion fcts in target.c?) */
 946 static void cfi_fix_code_endian(struct target *target, uint8_t *dest, const uint32_t *src, uint32_t count)
 947 {
 948         uint32_t i;
 949         for (i = 0; i< count; i++)
 950         {
 951                 target_buffer_set_u32(target, dest, *src);
 952                 dest += 4;
 953                 src++;
 954         }
 955 }
 956
 957 static uint32_t cfi_command_val(struct flash_bank *bank, uint8_t cmd)
 958 {
 959         struct target *target = bank->target;
 960
 961         uint8_t buf[CFI_MAX_BUS_WIDTH];
 962         cfi_command(bank, cmd, buf);
 963         switch (bank->bus_width)
 964         {
 965         case 1 :
 966                 return buf[0];
 967                 break;
 968         case 2 :
 969                 return target_buffer_get_u16(target, buf);
 970                 break;
 971         case 4 :
 972                 return target_buffer_get_u32(target, buf);
 973                 break;
 974         default :
 975                 LOG_ERROR("Unsupported bank buswidth %d, can't do block memory writes", bank->bus_width);
 976                 return 0;
 977         }
 978 }
 979
 980 static int cfi_intel_write_block(struct flash_bank *bank, uint8_t *buffer, uint32_t address, uint32_t count)
 981 {
 982         struct cfi_flash_bank *cfi_info = bank->driver_priv;
 983         struct target *target = bank->target;
 984         struct reg_param reg_params[7];
 985         struct arm_algorithm armv4_5_info;
 986         struct working_area *source;
 987         uint32_t buffer_size = 32768;
 988         uint32_t write_command_val, busy_pattern_val, error_pattern_val;
 989
 990         /* algorithm register usage:
 991          * r0: source address (in RAM)
 992          * r1: target address (in Flash)
 993          * r2: count
 994          * r3: flash write command
 995          * r4: status byte (returned to host)
 996          * r5: busy test pattern
 997          * r6: error test pattern
 998          */
 999
1000         static const uint32_t word_32_code[] = {
1001                 0xe4904004,   /* loop:  ldr r4, [r0], #4 */
1002                 0xe5813000,   /*                str r3, [r1] */
1003                 0xe5814000,   /*                str r4, [r1] */
1004                 0xe5914000,   /* busy:  ldr r4, [r1] */
1005                 0xe0047005,   /*                and r7, r4, r5 */
1006                 0xe1570005,   /*                cmp r7, r5 */
1007                 0x1afffffb,   /*                bne busy */
1008                 0xe1140006,   /*                tst r4, r6 */
1009                 0x1a000003,   /*                bne done */
1010                 0xe2522001,   /*                subs r2, r2, #1 */
1011                 0x0a000001,   /*                beq done */
1012                 0xe2811004,   /*                add r1, r1 #4 */
1013                 0xeafffff2,   /*                b loop */
1014                 0xeafffffe    /* done:  b -2 */
1015         };
1016
1017         static const uint32_t word_16_code[] = {
1018                 0xe0d040b2,   /* loop:  ldrh r4, [r0], #2 */
1019                 0xe1c130b0,   /*                strh r3, [r1] */
1020                 0xe1c140b0,   /*                strh r4, [r1] */
1021                 0xe1d140b0,   /* busy   ldrh r4, [r1] */
1022                 0xe0047005,   /*                and r7, r4, r5 */
1023                 0xe1570005,   /*                cmp r7, r5 */
1024                 0x1afffffb,   /*                bne busy */
1025                 0xe1140006,   /*                tst r4, r6 */
1026                 0x1a000003,   /*                bne done */
1027                 0xe2522001,   /*                subs r2, r2, #1 */
1028                 0x0a000001,   /*                beq done */
1029                 0xe2811002,   /*                add r1, r1 #2 */
1030                 0xeafffff2,   /*                b loop */
1031                 0xeafffffe    /* done:  b -2 */
1032         };
1033
1034         static const uint32_t word_8_code[] = {
1035                 0xe4d04001,   /* loop:  ldrb r4, [r0], #1 */
1036                 0xe5c13000,   /*                strb r3, [r1] */
1037                 0xe5c14000,   /*                strb r4, [r1] */
1038                 0xe5d14000,   /* busy   ldrb r4, [r1] */
1039                 0xe0047005,   /*                and r7, r4, r5 */
1040                 0xe1570005,   /*                cmp r7, r5 */
1041                 0x1afffffb,   /*                bne busy */
1042                 0xe1140006,   /*                tst r4, r6 */
1043                 0x1a000003,   /*                bne done */
1044                 0xe2522001,   /*                subs r2, r2, #1 */
1045                 0x0a000001,   /*                beq done */
1046                 0xe2811001,   /*                add r1, r1 #1 */
1047                 0xeafffff2,   /*                b loop */
1048                 0xeafffffe    /* done:  b -2 */
1049         };
1050         uint8_t target_code[4*CFI_MAX_INTEL_CODESIZE];
1051         const uint32_t *target_code_src;
1052         uint32_t target_code_size;
1053         int retval = ERROR_OK;
1054
1055
1056         cfi_intel_clear_status_register(bank);
1057
1058         armv4_5_info.common_magic = ARM_COMMON_MAGIC;
1059         armv4_5_info.core_mode = ARM_MODE_SVC;
1060         armv4_5_info.core_state = ARM_STATE_ARM;
1061
1062         /* If we are setting up the write_algorith, we need target_code_src */
1063         /* if not we only need target_code_size. */
1064
1065         /* However, we don't want to create multiple code paths, so we */
1066         /* do the unecessary evaluation of target_code_src, which the */
1067         /* compiler will probably nicely optimize away if not needed */
1068
1069         /* prepare algorithm code for target endian */
1070         switch (bank->bus_width)
1071         {
1072         case 1 :
1073                 target_code_src = word_8_code;
1074                 target_code_size = sizeof(word_8_code);
1075                 break;
1076         case 2 :
1077                 target_code_src = word_16_code;
1078                 target_code_size = sizeof(word_16_code);
1079                 break;
1080         case 4 :
1081                 target_code_src = word_32_code;
1082                 target_code_size = sizeof(word_32_code);
1083                 break;
1084         default:
1085                 LOG_ERROR("Unsupported bank buswidth %d, can't do block memory writes", bank->bus_width);
1086                 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
1087         }
1088
1089         /* flash write code */
1090         if (!cfi_info->write_algorithm)
1091         {
1092                 if (target_code_size > sizeof(target_code))
1093                 {
1094                         LOG_WARNING("Internal error - target code buffer to small. Increase CFI_MAX_INTEL_CODESIZE and recompile.");
1095                         return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
1096                 }
1097                 cfi_fix_code_endian(target, target_code, target_code_src, target_code_size / 4);
1098
1099                 /* Get memory for block write handler */
1100                 retval = target_alloc_working_area(target, target_code_size, &cfi_info->write_algorithm);
1101                 if (retval != ERROR_OK)
1102                 {
1103                         LOG_WARNING("No working area available, can't do block memory writes");
1104                         return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
1105                 };
1106
1107                 /* write algorithm code to working area */
1108                 retval = target_write_buffer(target, cfi_info->write_algorithm->address, target_code_size, target_code);
1109                 if (retval != ERROR_OK)
1110                 {
1111                         LOG_ERROR("Unable to write block write code to target");
1112                         goto cleanup;
1113                 }
1114         }
1115
1116         /* Get a workspace buffer for the data to flash starting with 32k size.
1117            Half size until buffer would be smaller 256 Bytem then fail back */
1118         /* FIXME Why 256 bytes, why not 32 bytes (smallest flash write page */
1119         while (target_alloc_working_area_try(target, buffer_size, &source) != ERROR_OK)
1120         {
1121                 buffer_size /= 2;
1122                 if (buffer_size <= 256)
1123                 {
1124                         LOG_WARNING("no large enough working area available, can't do block memory writes");
1125                         retval = ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
1126                         goto cleanup;
1127                 }
1128         };
1129
1130         /* setup algo registers */
1131         init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
1132         init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
1133         init_reg_param(&reg_params[2], "r2", 32, PARAM_OUT);
1134         init_reg_param(&reg_params[3], "r3", 32, PARAM_OUT);
1135         init_reg_param(&reg_params[4], "r4", 32, PARAM_IN);
1136         init_reg_param(&reg_params[5], "r5", 32, PARAM_OUT);
1137         init_reg_param(&reg_params[6], "r6", 32, PARAM_OUT);
1138
1139         /* prepare command and status register patterns */
1140         write_command_val = cfi_command_val(bank, 0x40);
1141         busy_pattern_val  = cfi_command_val(bank, 0x80);
1142         error_pattern_val = cfi_command_val(bank, 0x7e);
1143
1144         LOG_DEBUG("Using target buffer at 0x%08" PRIx32 " and of size 0x%04" PRIx32, source->address, buffer_size);
1145
1146         /* Programming main loop */
1147         while (count > 0)
1148         {
1149                 uint32_t thisrun_count = (count > buffer_size) ? buffer_size : count;
1150                 uint32_t wsm_error;
1151
1152                 if ((retval = target_write_buffer(target, source->address, thisrun_count, buffer)) != ERROR_OK)
1153                 {
1154                         goto cleanup;
1155                 }
1156
1157                 buf_set_u32(reg_params[0].value, 0, 32, source->address);
1158                 buf_set_u32(reg_params[1].value, 0, 32, address);
1159                 buf_set_u32(reg_params[2].value, 0, 32, thisrun_count / bank->bus_width);
1160
1161                 buf_set_u32(reg_params[3].value, 0, 32, write_command_val);
1162                 buf_set_u32(reg_params[5].value, 0, 32, busy_pattern_val);
1163                 buf_set_u32(reg_params[6].value, 0, 32, error_pattern_val);
1164
1165                 LOG_DEBUG("Write 0x%04" PRIx32 " bytes to flash at 0x%08" PRIx32 , thisrun_count, address);
1166
1167                 /* Execute algorithm, assume breakpoint for last instruction */
1168                 retval = target_run_algorithm(target, 0, NULL, 7, reg_params,
1169                         cfi_info->write_algorithm->address,
1170                         cfi_info->write_algorithm->address + target_code_size - sizeof(uint32_t),
1171                         10000, /* 10s should be enough for max. 32k of data */
1172                         &armv4_5_info);
1173
1174                 /* On failure try a fall back to direct word writes */
1175                 if (retval != ERROR_OK)
1176                 {
1177                         cfi_intel_clear_status_register(bank);
1178                         LOG_ERROR("Execution of flash algorythm failed. Can't fall back. Please report.");
1179                         retval = ERROR_FLASH_OPERATION_FAILED;
1180                         /* retval = ERROR_TARGET_RESOURCE_NOT_AVAILABLE; */
1181                         /* FIXME To allow fall back or recovery, we must save the actual status
1182                            somewhere, so that a higher level code can start recovery. */
1183                         goto cleanup;
1184                 }
1185
1186                 /* Check return value from algo code */
1187                 wsm_error = buf_get_u32(reg_params[4].value, 0, 32) & error_pattern_val;
1188                 if (wsm_error)
1189                 {
1190                         /* read status register (outputs debug inforation) */
1191                         cfi_intel_wait_status_busy(bank, 100);
1192                         cfi_intel_clear_status_register(bank);
1193                         retval = ERROR_FLASH_OPERATION_FAILED;
1194                         goto cleanup;
1195                 }
1196
1197                 buffer += thisrun_count;
1198                 address += thisrun_count;
1199                 count -= thisrun_count;
1200         }
1201
1202         /* free up resources */
1203 cleanup:
1204         if (source)
1205                 target_free_working_area(target, source);
1206
1207         if (cfi_info->write_algorithm)
1208         {
1209                 target_free_working_area(target, cfi_info->write_algorithm);
1210                 cfi_info->write_algorithm = NULL;
1211         }
1212
1213         destroy_reg_param(&reg_params[0]);
1214         destroy_reg_param(&reg_params[1]);
1215         destroy_reg_param(&reg_params[2]);
1216         destroy_reg_param(&reg_params[3]);
1217         destroy_reg_param(&reg_params[4]);
1218         destroy_reg_param(&reg_params[5]);
1219         destroy_reg_param(&reg_params[6]);
1220
1221         return retval;
1222 }
1223
1224 static int cfi_spansion_write_block(struct flash_bank *bank, uint8_t *buffer, uint32_t address, uint32_t count)
1225 {
1226         struct cfi_flash_bank *cfi_info = bank->driver_priv;
1227         struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
1228         struct target *target = bank->target;
1229         struct reg_param reg_params[10];
1230         struct arm_algorithm armv4_5_info;
1231         struct working_area *source;
1232         uint32_t buffer_size = 32768;
1233         uint32_t status;
1234         int retval, retvaltemp;
1235         int exit_code = ERROR_OK;
1236
1237         /* input parameters - */
1238         /*      R0 = source address */
1239         /*      R1 = destination address */
1240         /*      R2 = number of writes */
1241         /*      R3 = flash write command */
1242         /*      R4 = constant to mask DQ7 bits (also used for Dq5 with shift) */
1243         /* output parameters - */
1244         /*      R5 = 0x80 ok 0x00 bad */
1245         /* temp registers - */
1246         /*      R6 = value read from flash to test status */
1247         /*      R7 = holding register */
1248         /* unlock registers - */
1249         /*  R8 = unlock1_addr */
1250         /*  R9 = unlock1_cmd */
1251         /*  R10 = unlock2_addr */
1252         /*  R11 = unlock2_cmd */
1253
1254         static const uint32_t word_32_code[] = {
1255                                                 /* 00008100 <sp_32_code>:               */
1256                 0xe4905004,             /* ldr  r5, [r0], #4                    */
1257                 0xe5889000,     /* str  r9, [r8]                                */
1258                 0xe58ab000,     /* str  r11, [r10]                              */
1259                 0xe5883000,     /* str  r3, [r8]                                */
1260                 0xe5815000,     /* str  r5, [r1]                                */
1261                 0xe1a00000,     /* nop                                                  */
1262                                                 /*                                                              */
1263                                                 /* 00008110 <sp_32_busy>:               */
1264                 0xe5916000,     /* ldr  r6, [r1]                                */
1265                 0xe0257006,     /* eor  r7, r5, r6                              */
1266                 0xe0147007,     /* ands r7, r4, r7                              */
1267                 0x0a000007,     /* beq  8140 <sp_32_cont> ; b if DQ7 == Data7 */
1268                 0xe0166124,     /* ands r6, r6, r4, lsr #2              */
1269                 0x0afffff9,     /* beq  8110 <sp_32_busy> ;     b if DQ5 low */
1270                 0xe5916000,     /* ldr  r6, [r1]                                */
1271                 0xe0257006,     /* eor  r7, r5, r6                              */
1272                 0xe0147007,     /* ands r7, r4, r7                              */
1273                 0x0a000001,     /* beq  8140 <sp_32_cont> ; b if DQ7 == Data7 */
1274                 0xe3a05000,     /* mov  r5, #0  ; 0x0 - return 0x00, error */
1275                 0x1a000004,     /* bne  8154 <sp_32_done>               */
1276                                                 /*                                                              */
1277                                 /* 00008140 <sp_32_cont>:                               */
1278                 0xe2522001,     /* subs r2, r2, #1      ; 0x1           */
1279                 0x03a05080,     /* moveq        r5, #128        ; 0x80  */
1280                 0x0a000001,     /* beq  8154 <sp_32_done>               */
1281                 0xe2811004,     /* add  r1, r1, #4      ; 0x4           */
1282                 0xeaffffe8,     /* b    8100 <sp_32_code>               */
1283                                                 /*                                                              */
1284                                                 /* 00008154 <sp_32_done>:               */
1285                 0xeafffffe              /* b    8154 <sp_32_done>               */
1286                 };
1287
1288                 static const uint32_t word_16_code[] = {
1289                                 /* 00008158 <sp_16_code>:              */
1290                 0xe0d050b2,     /* ldrh r5, [r0], #2               */
1291                 0xe1c890b0,     /* strh r9, [r8]                                */
1292                 0xe1cab0b0,     /* strh r11, [r10]                              */
1293                 0xe1c830b0,     /* strh r3, [r8]                                */
1294                 0xe1c150b0,     /* strh r5, [r1]                       */
1295                 0xe1a00000,     /* nop                  (mov r0,r0)    */
1296                                 /*                                     */
1297                                 /* 00008168 <sp_16_busy>:              */
1298                 0xe1d160b0,     /* ldrh r6, [r1]                       */
1299                 0xe0257006,     /* eor  r7, r5, r6                     */
1300                 0xe0147007,     /* ands r7, r4, r7                     */
1301                 0x0a000007,     /* beq  8198 <sp_16_cont>              */
1302                 0xe0166124,     /* ands r6, r6, r4, lsr #2             */
1303                 0x0afffff9,     /* beq  8168 <sp_16_busy>              */
1304                 0xe1d160b0,     /* ldrh r6, [r1]                       */
1305                 0xe0257006,     /* eor  r7, r5, r6                     */
1306                 0xe0147007,     /* ands r7, r4, r7                     */
1307                 0x0a000001,     /* beq  8198 <sp_16_cont>              */
1308                 0xe3a05000,     /* mov  r5, #0  ; 0x0                  */
1309                 0x1a000004,     /* bne  81ac <sp_16_done>              */
1310                                 /*                                     */
1311                                 /* 00008198 <sp_16_cont>:              */
1312                 0xe2522001,     /* subs r2, r2, #1      ; 0x1          */
1313                 0x03a05080,     /* moveq        r5, #128        ; 0x80 */
1314                 0x0a000001,     /* beq  81ac <sp_16_done>              */
1315                 0xe2811002,     /* add  r1, r1, #2      ; 0x2          */
1316                 0xeaffffe8,     /* b    8158 <sp_16_code>              */
1317                                 /*                                     */
1318                                 /* 000081ac <sp_16_done>:              */
1319                 0xeafffffe      /* b    81ac <sp_16_done>              */
1320                 };
1321
1322                 static const uint32_t word_16_code_dq7only[] = {
1323                                 /* <sp_16_code>:                       */
1324                 0xe0d050b2,     /* ldrh r5, [r0], #2                   */
1325                 0xe1c890b0,     /* strh r9, [r8]                       */
1326                 0xe1cab0b0,     /* strh r11, [r10]                              */
1327                 0xe1c830b0,     /* strh r3, [r8]                                */
1328                 0xe1c150b0,     /* strh r5, [r1]                       */
1329                 0xe1a00000,     /* nop                  (mov r0,r0)    */
1330                                 /*                                     */
1331                                 /* <sp_16_busy>:                       */
1332                 0xe1d160b0,     /* ldrh r6, [r1]                       */
1333                 0xe0257006,     /* eor  r7, r5, r6                     */
1334                 0xe2177080,     /* ands r7, #0x80                      */
1335                 0x1afffffb,     /* bne  8168 <sp_16_busy>              */
1336                                 /*                                     */
1337                 0xe2522001,     /* subs r2, r2, #1      ; 0x1          */
1338                 0x03a05080,     /* moveq        r5, #128        ; 0x80 */
1339                 0x0a000001,     /* beq  81ac <sp_16_done>              */
1340                 0xe2811002,     /* add  r1, r1, #2      ; 0x2          */
1341                 0xeafffff0,     /* b    8158 <sp_16_code>              */
1342                                 /*                                     */
1343                                 /* 000081ac <sp_16_done>:              */
1344                 0xeafffffe      /* b    81ac <sp_16_done>              */
1345                 };
1346
1347                 static const uint32_t word_8_code[] = {
1348                                 /* 000081b0 <sp_16_code_end>:          */
1349                 0xe4d05001,     /* ldrb r5, [r0], #1                   */
1350                 0xe5c89000,     /* strb r9, [r8]                                */
1351                 0xe5cab000,     /* strb r11, [r10]                              */
1352                 0xe5c83000,     /* strb r3, [r8]                                */
1353                 0xe5c15000,     /* strb r5, [r1]                       */
1354                 0xe1a00000,     /* nop                  (mov r0,r0)    */
1355                                 /*                                     */
1356                                 /* 000081c0 <sp_8_busy>:               */
1357                 0xe5d16000,     /* ldrb r6, [r1]                       */
1358                 0xe0257006,     /* eor  r7, r5, r6                     */
1359                 0xe0147007,     /* ands r7, r4, r7                     */
1360                 0x0a000007,     /* beq  81f0 <sp_8_cont>               */
1361                 0xe0166124,     /* ands r6, r6, r4, lsr #2             */
1362                 0x0afffff9,     /* beq  81c0 <sp_8_busy>               */
1363                 0xe5d16000,     /* ldrb r6, [r1]                       */
1364                 0xe0257006,     /* eor  r7, r5, r6                     */
1365                 0xe0147007,     /* ands r7, r4, r7                     */
1366                 0x0a000001,     /* beq  81f0 <sp_8_cont>               */
1367                 0xe3a05000,     /* mov  r5, #0  ; 0x0                  */
1368                 0x1a000004,     /* bne  8204 <sp_8_done>               */
1369                                 /*                                     */
1370                                 /* 000081f0 <sp_8_cont>:               */
1371                 0xe2522001,     /* subs r2, r2, #1      ; 0x1          */
1372                 0x03a05080,     /* moveq        r5, #128        ; 0x80 */
1373                 0x0a000001,     /* beq  8204 <sp_8_done>               */
1374                 0xe2811001,     /* add  r1, r1, #1      ; 0x1          */
1375                 0xeaffffe8,     /* b    81b0 <sp_16_code_end>          */
1376                                 /*                                     */
1377                                 /* 00008204 <sp_8_done>:               */
1378                 0xeafffffe      /* b    8204 <sp_8_done>               */
1379         };
1380
1381         armv4_5_info.common_magic = ARM_COMMON_MAGIC;
1382         armv4_5_info.core_mode = ARM_MODE_SVC;
1383         armv4_5_info.core_state = ARM_STATE_ARM;
1384
1385         int target_code_size;
1386         const uint32_t *target_code_src;
1387
1388         switch (bank->bus_width)
1389         {
1390         case 1 :
1391                 target_code_src = word_8_code;
1392                 target_code_size = sizeof(word_8_code);
1393                 break;
1394         case 2 :
1395                 /* Check for DQ5 support */
1396                 if( cfi_info->status_poll_mask & (1 << 5) )
1397                 {
1398                         target_code_src = word_16_code;
1399                         target_code_size = sizeof(word_16_code);
1400                 }
1401                 else
1402                 {
1403                         /* No DQ5 support. Use DQ7 DATA# polling only. */
1404                         target_code_src = word_16_code_dq7only;
1405                         target_code_size = sizeof(word_16_code_dq7only);
1406                 }
1407                 break;
1408         case 4 :
1409                 target_code_src = word_32_code;
1410                 target_code_size = sizeof(word_32_code);
1411                 break;
1412         default:
1413                 LOG_ERROR("Unsupported bank buswidth %d, can't do block memory writes", bank->bus_width);
1414                 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
1415         }
1416
1417         /* flash write code */
1418         if (!cfi_info->write_algorithm)
1419         {
1420                 uint8_t *target_code;
1421
1422                 /* convert bus-width dependent algorithm code to correct endiannes */
1423                 target_code = malloc(target_code_size);
1424                 cfi_fix_code_endian(target, target_code, target_code_src, target_code_size / 4);
1425
1426                 /* allocate working area */
1427                 retval = target_alloc_working_area(target, target_code_size,
1428                                 &cfi_info->write_algorithm);
1429                 if (retval != ERROR_OK)
1430                 {
1431                         free(target_code);
1432                         return retval;
1433                 }
1434
1435                 /* write algorithm code to working area */
1436                 if ((retval = target_write_buffer(target, cfi_info->write_algorithm->address,
1437                                     target_code_size, target_code)) != ERROR_OK)
1438                 {
1439                         free(target_code);
1440                         return retval;
1441                 }
1442
1443                 free(target_code);
1444         }
1445         /* the following code still assumes target code is fixed 24*4 bytes */
1446
1447         while (target_alloc_working_area_try(target, buffer_size, &source) != ERROR_OK)
1448         {
1449                 buffer_size /= 2;
1450                 if (buffer_size <= 256)
1451                 {
1452                         /* if we already allocated the writing code, but failed to get a buffer, free the algorithm */
1453                         if (cfi_info->write_algorithm)
1454                                 target_free_working_area(target, cfi_info->write_algorithm);
1455
1456                         LOG_WARNING("not enough working area available, can't do block memory writes");
1457                         return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
1458                 }
1459         };
1460
1461         init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
1462         init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
1463         init_reg_param(&reg_params[2], "r2", 32, PARAM_OUT);
1464         init_reg_param(&reg_params[3], "r3", 32, PARAM_OUT);
1465         init_reg_param(&reg_params[4], "r4", 32, PARAM_OUT);
1466         init_reg_param(&reg_params[5], "r5", 32, PARAM_IN);
1467         init_reg_param(&reg_params[6], "r8", 32, PARAM_OUT);
1468         init_reg_param(&reg_params[7], "r9", 32, PARAM_OUT);
1469         init_reg_param(&reg_params[8], "r10", 32, PARAM_OUT);
1470         init_reg_param(&reg_params[9], "r11", 32, PARAM_OUT);
1471
1472         while (count > 0)
1473         {
1474                 uint32_t thisrun_count = (count > buffer_size) ? buffer_size : count;
1475
1476                 retvaltemp = target_write_buffer(target, source->address, thisrun_count, buffer);
1477
1478                 buf_set_u32(reg_params[0].value, 0, 32, source->address);
1479                 buf_set_u32(reg_params[1].value, 0, 32, address);
1480                 buf_set_u32(reg_params[2].value, 0, 32, thisrun_count / bank->bus_width);
1481                 buf_set_u32(reg_params[3].value, 0, 32, cfi_command_val(bank, 0xA0));
1482                 buf_set_u32(reg_params[4].value, 0, 32, cfi_command_val(bank, 0x80));
1483                 buf_set_u32(reg_params[6].value, 0, 32, flash_address(bank, 0, pri_ext->_unlock1));
1484                 buf_set_u32(reg_params[7].value, 0, 32, 0xaaaaaaaa);
1485                 buf_set_u32(reg_params[8].value, 0, 32, flash_address(bank, 0, pri_ext->_unlock2));
1486                 buf_set_u32(reg_params[9].value, 0, 32, 0x55555555);
1487
1488                 retval = target_run_algorithm(target, 0, NULL, 10, reg_params,
1489                                                      cfi_info->write_algorithm->address,
1490                                                      cfi_info->write_algorithm->address + ((target_code_size) - 4),
1491                                                      10000, &armv4_5_info);
1492
1493                 status = buf_get_u32(reg_params[5].value, 0, 32);
1494
1495                 if ((retval != ERROR_OK) || (retvaltemp != ERROR_OK) || status != 0x80)
1496                 {
1497                         LOG_DEBUG("status: 0x%" PRIx32 , status);
1498                         exit_code = ERROR_FLASH_OPERATION_FAILED;
1499                         break;
1500                 }
1501
1502                 buffer += thisrun_count;
1503                 address += thisrun_count;
1504                 count -= thisrun_count;
1505         }
1506
1507         target_free_all_working_areas(target);
1508
1509         destroy_reg_param(&reg_params[0]);
1510         destroy_reg_param(&reg_params[1]);
1511         destroy_reg_param(&reg_params[2]);
1512         destroy_reg_param(&reg_params[3]);
1513         destroy_reg_param(&reg_params[4]);
1514         destroy_reg_param(&reg_params[5]);
1515         destroy_reg_param(&reg_params[6]);
1516         destroy_reg_param(&reg_params[7]);
1517         destroy_reg_param(&reg_params[8]);
1518         destroy_reg_param(&reg_params[9]);
1519
1520         return exit_code;
1521 }
1522
1523 static int cfi_intel_write_word(struct flash_bank *bank, uint8_t *word, uint32_t address)
1524 {
1525         int retval;
1526         struct cfi_flash_bank *cfi_info = bank->driver_priv;
1527         struct target *target = bank->target;
1528
1529         cfi_intel_clear_status_register(bank);
1530         if ((retval = cfi_send_command(bank, 0x40, address)) != ERROR_OK)
1531         {
1532                 return retval;
1533         }
1534
1535         if ((retval = target_write_memory(target, address, bank->bus_width, 1, word)) != ERROR_OK)
1536         {
1537                 return retval;
1538         }
1539
1540         if (cfi_intel_wait_status_busy(bank, 1000 * (1 << cfi_info->word_write_timeout_max)) != 0x80)
1541         {
1542                 if ((retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0))) != ERROR_OK)
1543                 {
1544                         return retval;
1545                 }
1546
1547                 LOG_ERROR("couldn't write word at base 0x%" PRIx32 ", address %" PRIx32 , bank->base, address);
1548                 return ERROR_FLASH_OPERATION_FAILED;
1549         }
1550
1551         return ERROR_OK;
1552 }
1553
1554 static int cfi_intel_write_words(struct flash_bank *bank, uint8_t *word, uint32_t wordcount, uint32_t address)
1555 {
1556         int retval;
1557         struct cfi_flash_bank *cfi_info = bank->driver_priv;
1558         struct target *target = bank->target;
1559
1560         /* Calculate buffer size and boundary mask */
1561         uint32_t buffersize = (1UL << cfi_info->max_buf_write_size) * (bank->bus_width / bank->chip_width);
1562         uint32_t buffermask = buffersize-1;
1563         uint32_t bufferwsize;
1564
1565         /* Check for valid range */
1566         if (address & buffermask)
1567         {
1568                 LOG_ERROR("Write address at base 0x%" PRIx32 ", address %" PRIx32 " not aligned to 2^%d boundary",
1569                           bank->base, address, cfi_info->max_buf_write_size);
1570                 return ERROR_FLASH_OPERATION_FAILED;
1571         }
1572         switch (bank->chip_width)
1573         {
1574         case 4 : bufferwsize = buffersize / 4; break;
1575         case 2 : bufferwsize = buffersize / 2; break;
1576         case 1 : bufferwsize = buffersize; break;
1577         default:
1578                 LOG_ERROR("Unsupported chip width %d", bank->chip_width);
1579                 return ERROR_FLASH_OPERATION_FAILED;
1580         }
1581
1582         bufferwsize/=(bank->bus_width / bank->chip_width);
1583
1584
1585         /* Check for valid size */
1586         if (wordcount > bufferwsize)
1587         {
1588                 LOG_ERROR("Number of data words %" PRId32 " exceeds available buffersize %" PRId32 , wordcount, buffersize);
1589                 return ERROR_FLASH_OPERATION_FAILED;
1590         }
1591
1592         /* Write to flash buffer */
1593         cfi_intel_clear_status_register(bank);
1594
1595         /* Initiate buffer operation _*/
1596         if ((retval = cfi_send_command(bank, 0xe8, address)) != ERROR_OK)
1597         {
1598                 return retval;
1599         }
1600         if (cfi_intel_wait_status_busy(bank, 1000 * (1 << cfi_info->buf_write_timeout_max)) != 0x80)
1601         {
1602                 if ((retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0))) != ERROR_OK)
1603                 {
1604                         return retval;
1605                 }
1606
1607                 LOG_ERROR("couldn't start buffer write operation at base 0x%" PRIx32 ", address %" PRIx32 , bank->base, address);
1608                 return ERROR_FLASH_OPERATION_FAILED;
1609         }
1610
1611         /* Write buffer wordcount-1 and data words */
1612         if ((retval = cfi_send_command(bank, bufferwsize-1, address)) != ERROR_OK)
1613         {
1614                 return retval;
1615         }
1616
1617         if ((retval = target_write_memory(target, address, bank->bus_width, bufferwsize, word)) != ERROR_OK)
1618         {
1619                 return retval;
1620         }
1621
1622         /* Commit write operation */
1623         if ((retval = cfi_send_command(bank, 0xd0, address)) != ERROR_OK)
1624         {
1625                 return retval;
1626         }
1627         if (cfi_intel_wait_status_busy(bank, 1000 * (1 << cfi_info->buf_write_timeout_max)) != 0x80)
1628         {
1629                 if ((retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0))) != ERROR_OK)
1630                 {
1631                         return retval;
1632                 }
1633
1634                 LOG_ERROR("Buffer write at base 0x%" PRIx32 ", address %" PRIx32 " failed.", bank->base, address);
1635                 return ERROR_FLASH_OPERATION_FAILED;
1636         }
1637
1638         return ERROR_OK;
1639 }
1640
1641 static int cfi_spansion_write_word(struct flash_bank *bank, uint8_t *word, uint32_t address)
1642 {
1643         int retval;
1644         struct cfi_flash_bank *cfi_info = bank->driver_priv;
1645         struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
1646         struct target *target = bank->target;
1647
1648         if ((retval = cfi_send_command(bank, 0xaa, flash_address(bank, 0, pri_ext->_unlock1))) != ERROR_OK)
1649         {
1650                 return retval;
1651         }
1652
1653         if ((retval = cfi_send_command(bank, 0x55, flash_address(bank, 0, pri_ext->_unlock2))) != ERROR_OK)
1654         {
1655                 return retval;
1656         }
1657
1658         if ((retval = cfi_send_command(bank, 0xa0, flash_address(bank, 0, pri_ext->_unlock1))) != ERROR_OK)
1659         {
1660                 return retval;
1661         }
1662
1663         if ((retval = target_write_memory(target, address, bank->bus_width, 1, word)) != ERROR_OK)
1664         {
1665                 return retval;
1666         }
1667
1668         if (cfi_spansion_wait_status_busy(bank, 1000 * (1 << cfi_info->word_write_timeout_max)) != ERROR_OK)
1669         {
1670                 if ((retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0))) != ERROR_OK)
1671                 {
1672                         return retval;
1673                 }
1674
1675                 LOG_ERROR("couldn't write word at base 0x%" PRIx32 ", address %" PRIx32 , bank->base, address);
1676                 return ERROR_FLASH_OPERATION_FAILED;
1677         }
1678
1679         return ERROR_OK;
1680 }
1681
1682 static int cfi_spansion_write_words(struct flash_bank *bank, uint8_t *word, uint32_t wordcount, uint32_t address)
1683 {
1684         int retval;
1685         struct cfi_flash_bank *cfi_info = bank->driver_priv;
1686         struct target *target = bank->target;
1687         struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
1688
1689         /* Calculate buffer size and boundary mask */
1690         uint32_t buffersize = (1UL << cfi_info->max_buf_write_size) * (bank->bus_width / bank->chip_width);
1691         uint32_t buffermask = buffersize-1;
1692         uint32_t bufferwsize;
1693
1694         /* Check for valid range */
1695         if (address & buffermask)
1696         {
1697                 LOG_ERROR("Write address at base 0x%" PRIx32 ", address %" PRIx32 " not aligned to 2^%d boundary", bank->base, address, cfi_info->max_buf_write_size);
1698                 return ERROR_FLASH_OPERATION_FAILED;
1699         }
1700         switch (bank->chip_width)
1701         {
1702         case 4 : bufferwsize = buffersize / 4; break;
1703         case 2 : bufferwsize = buffersize / 2; break;
1704         case 1 : bufferwsize = buffersize; break;
1705         default:
1706                 LOG_ERROR("Unsupported chip width %d", bank->chip_width);
1707                 return ERROR_FLASH_OPERATION_FAILED;
1708         }
1709
1710         bufferwsize/=(bank->bus_width / bank->chip_width);
1711
1712         /* Check for valid size */
1713         if (wordcount > bufferwsize)
1714         {
1715                 LOG_ERROR("Number of data words %" PRId32 " exceeds available buffersize %" PRId32, wordcount, buffersize);
1716                 return ERROR_FLASH_OPERATION_FAILED;
1717         }
1718
1719         // Unlock
1720         if ((retval = cfi_send_command(bank, 0xaa, flash_address(bank, 0, pri_ext->_unlock1))) != ERROR_OK)
1721         {
1722                 return retval;
1723         }
1724
1725         if ((retval = cfi_send_command(bank, 0x55, flash_address(bank, 0, pri_ext->_unlock2))) != ERROR_OK)
1726         {
1727                 return retval;
1728         }
1729
1730         // Buffer load command
1731         if ((retval = cfi_send_command(bank, 0x25, address)) != ERROR_OK)
1732         {
1733                 return retval;
1734         }
1735
1736         /* Write buffer wordcount-1 and data words */
1737         if ((retval = cfi_send_command(bank, bufferwsize-1, address)) != ERROR_OK)
1738         {
1739                 return retval;
1740         }
1741
1742         if ((retval = target_write_memory(target, address, bank->bus_width, bufferwsize, word)) != ERROR_OK)
1743         {
1744                 return retval;
1745         }
1746
1747         /* Commit write operation */
1748         if ((retval = cfi_send_command(bank, 0x29, address)) != ERROR_OK)
1749         {
1750                 return retval;
1751         }
1752
1753         if (cfi_spansion_wait_status_busy(bank, 1000 * (1 << cfi_info->word_write_timeout_max)) != ERROR_OK)
1754         {
1755                 if ((retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0))) != ERROR_OK)
1756                 {
1757                         return retval;
1758                 }
1759
1760                 LOG_ERROR("couldn't write block at base 0x%" PRIx32 ", address %" PRIx32 ", size %" PRIx32 , bank->base, address, bufferwsize);
1761                 return ERROR_FLASH_OPERATION_FAILED;
1762         }
1763
1764         return ERROR_OK;
1765 }
1766
1767 static int cfi_write_word(struct flash_bank *bank, uint8_t *word, uint32_t address)
1768 {
1769         struct cfi_flash_bank *cfi_info = bank->driver_priv;
1770
1771         switch (cfi_info->pri_id)
1772         {
1773                 case 1:
1774                 case 3:
1775                         return cfi_intel_write_word(bank, word, address);
1776                         break;
1777                 case 2:
1778                         return cfi_spansion_write_word(bank, word, address);
1779                         break;
1780                 default:
1781                         LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
1782                         break;
1783         }
1784
1785         return ERROR_FLASH_OPERATION_FAILED;
1786 }
1787
1788 static int cfi_write_words(struct flash_bank *bank, uint8_t *word, uint32_t wordcount, uint32_t address)
1789 {
1790         struct cfi_flash_bank *cfi_info = bank->driver_priv;
1791
1792         switch (cfi_info->pri_id)
1793         {
1794                 case 1:
1795                 case 3:
1796                         return cfi_intel_write_words(bank, word, wordcount, address);
1797                         break;
1798                 case 2:
1799                         return cfi_spansion_write_words(bank, word, wordcount, address);
1800                         break;
1801                 default:
1802                         LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
1803                         break;
1804         }
1805
1806         return ERROR_FLASH_OPERATION_FAILED;
1807 }
1808
1809 static int cfi_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
1810 {
1811         struct cfi_flash_bank *cfi_info = bank->driver_priv;
1812         struct target *target = bank->target;
1813         uint32_t address = bank->base + offset; /* address of first byte to be programmed */
1814         uint32_t write_p, copy_p;
1815         int align;      /* number of unaligned bytes */
1816         int blk_count; /* number of bus_width bytes for block copy */
1817         uint8_t current_word[CFI_MAX_BUS_WIDTH * 4];    /* word (bus_width size) currently being programmed */
1818         int i;
1819         int retval;
1820
1821         if (bank->target->state != TARGET_HALTED)
1822         {
1823                 LOG_ERROR("Target not halted");
1824                 return ERROR_TARGET_NOT_HALTED;
1825         }
1826
1827         if (offset + count > bank->size)
1828                 return ERROR_FLASH_DST_OUT_OF_BANK;
1829
1830         if (cfi_info->qry[0] != 'Q')
1831                 return ERROR_FLASH_BANK_NOT_PROBED;
1832
1833         /* start at the first byte of the first word (bus_width size) */
1834         write_p = address & ~(bank->bus_width - 1);
1835         if ((align = address - write_p) != 0)
1836         {
1837                 LOG_INFO("Fixup %d unaligned head bytes", align);
1838
1839                 for (i = 0; i < bank->bus_width; i++)
1840                         current_word[i] = 0;
1841                 copy_p = write_p;
1842
1843                 /* copy bytes before the first write address */
1844                 for (i = 0; i < align; ++i, ++copy_p)
1845                 {
1846                         uint8_t byte;
1847                         if ((retval = target_read_memory(target, copy_p, 1, 1, &byte)) != ERROR_OK)
1848                         {
1849                                 return retval;
1850                         }
1851                         cfi_add_byte(bank, current_word, byte);
1852                 }
1853
1854                 /* add bytes from the buffer */
1855                 for (; (i < bank->bus_width) && (count > 0); i++)
1856                 {
1857                         cfi_add_byte(bank, current_word, *buffer++);
1858                         count--;
1859                         copy_p++;
1860                 }
1861
1862                 /* if the buffer is already finished, copy bytes after the last write address */
1863                 for (; (count == 0) && (i < bank->bus_width); ++i, ++copy_p)
1864                 {
1865                         uint8_t byte;
1866                         if ((retval = target_read_memory(target, copy_p, 1, 1, &byte)) != ERROR_OK)
1867                         {
1868                                 return retval;
1869                         }
1870                         cfi_add_byte(bank, current_word, byte);
1871                 }
1872
1873                 retval = cfi_write_word(bank, current_word, write_p);
1874                 if (retval != ERROR_OK)
1875                         return retval;
1876                 write_p = copy_p;
1877         }
1878
1879         /* handle blocks of bus_size aligned bytes */
1880         blk_count = count & ~(bank->bus_width - 1); /* round down, leave tail bytes */
1881         switch (cfi_info->pri_id)
1882         {
1883                 /* try block writes (fails without working area) */
1884                 case 1:
1885                 case 3:
1886                         retval = cfi_intel_write_block(bank, buffer, write_p, blk_count);
1887                         break;
1888                 case 2:
1889                         retval = cfi_spansion_write_block(bank, buffer, write_p, blk_count);
1890                         break;
1891                 default:
1892                         LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
1893                         retval = ERROR_FLASH_OPERATION_FAILED;
1894                         break;
1895         }
1896         if (retval == ERROR_OK)
1897         {
1898                 /* Increment pointers and decrease count on succesful block write */
1899                 buffer += blk_count;
1900                 write_p += blk_count;
1901                 count -= blk_count;
1902         }
1903         else
1904         {
1905                 if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
1906                 {
1907                         //adjust buffersize for chip width
1908                         uint32_t buffersize = (1UL << cfi_info->max_buf_write_size) * (bank->bus_width / bank->chip_width);
1909                         uint32_t buffermask = buffersize-1;
1910                         uint32_t bufferwsize;
1911
1912                         switch (bank->chip_width)
1913                         {
1914                         case 4 : bufferwsize = buffersize / 4; break;
1915                         case 2 : bufferwsize = buffersize / 2; break;
1916                         case 1 : bufferwsize = buffersize; break;
1917                         default:
1918                                 LOG_ERROR("Unsupported chip width %d", bank->chip_width);
1919                                 return ERROR_FLASH_OPERATION_FAILED;
1920                         }
1921
1922                         bufferwsize/=(bank->bus_width / bank->chip_width);
1923
1924                         /* fall back to memory writes */
1925                         while (count >= (uint32_t)bank->bus_width)
1926                         {
1927                                 int fallback;
1928                                 if ((write_p & 0xff) == 0)
1929                                 {
1930                                         LOG_INFO("Programming at %08" PRIx32 ", count %08" PRIx32 " bytes remaining", write_p, count);
1931                                 }
1932                                 fallback = 1;
1933                                 if ((bufferwsize > 0) && (count >= buffersize) && !(write_p & buffermask))
1934                                 {
1935                                         retval = cfi_write_words(bank, buffer, bufferwsize, write_p);
1936                                         if (retval == ERROR_OK)
1937                                         {
1938                                                 buffer += buffersize;
1939                                                 write_p += buffersize;
1940                                                 count -= buffersize;
1941                                                 fallback = 0;
1942                                         }
1943                                 }
1944                                 /* try the slow way? */
1945                                 if (fallback)
1946                                 {
1947                                         for (i = 0; i < bank->bus_width; i++)
1948                                                 current_word[i] = 0;
1949
1950                                         for (i = 0; i < bank->bus_width; i++)
1951                                         {
1952                                                 cfi_add_byte(bank, current_word, *buffer++);
1953                                         }
1954
1955                                         retval = cfi_write_word(bank, current_word, write_p);
1956                                         if (retval != ERROR_OK)
1957                                                 return retval;
1958
1959                                         write_p += bank->bus_width;
1960                                         count -= bank->bus_width;
1961                                 }
1962                         }
1963                 }
1964                 else
1965                         return retval;
1966         }
1967
1968         /* return to read array mode, so we can read from flash again for padding */
1969         if ((retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0))) != ERROR_OK)
1970         {
1971                 return retval;
1972         }
1973         if ((retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0))) != ERROR_OK)
1974         {
1975                 return retval;
1976         }
1977
1978         /* handle unaligned tail bytes */
1979         if (count > 0)
1980         {
1981                 LOG_INFO("Fixup %" PRId32 " unaligned tail bytes", count);
1982
1983                 copy_p = write_p;
1984                 for (i = 0; i < bank->bus_width; i++)
1985                         current_word[i] = 0;
1986
1987                 for (i = 0; (i < bank->bus_width) && (count > 0); ++i, ++copy_p)
1988                 {
1989                         cfi_add_byte(bank, current_word, *buffer++);
1990                         count--;
1991                 }
1992                 for (; i < bank->bus_width; ++i, ++copy_p)
1993                 {
1994                         uint8_t byte;
1995                         if ((retval = target_read_memory(target, copy_p, 1, 1, &byte)) != ERROR_OK)
1996                         {
1997                                 return retval;
1998                         }
1999                         cfi_add_byte(bank, current_word, byte);
2000                 }
2001                 retval = cfi_write_word(bank, current_word, write_p);
2002                 if (retval != ERROR_OK)
2003                         return retval;
2004         }
2005
2006         /* return to read array mode */
2007         if ((retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0))) != ERROR_OK)
2008         {
2009                 return retval;
2010         }
2011         return cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0));
2012 }
2013
2014 static void cfi_fixup_atmel_reversed_erase_regions(struct flash_bank *bank, void *param)
2015 {
2016         (void) param;
2017         struct cfi_flash_bank *cfi_info = bank->driver_priv;
2018         struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
2019
2020         pri_ext->_reversed_geometry = 1;
2021 }
2022
2023 static void cfi_fixup_0002_erase_regions(struct flash_bank *bank, void *param)
2024 {
2025         int i;
2026         struct cfi_flash_bank *cfi_info = bank->driver_priv;
2027         struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
2028         (void) param;
2029
2030         if ((pri_ext->_reversed_geometry) || (pri_ext->TopBottom == 3))
2031         {
2032                 LOG_DEBUG("swapping reversed erase region information on cmdset 0002 device");
2033
2034                 for (i = 0; i < cfi_info->num_erase_regions / 2; i++)
2035                 {
2036                         int j = (cfi_info->num_erase_regions - 1) - i;
2037                         uint32_t swap;
2038
2039                         swap = cfi_info->erase_region_info[i];
2040                         cfi_info->erase_region_info[i] = cfi_info->erase_region_info[j];
2041                         cfi_info->erase_region_info[j] = swap;
2042                 }
2043         }
2044 }
2045
2046 static void cfi_fixup_0002_unlock_addresses(struct flash_bank *bank, void *param)
2047 {
2048         struct cfi_flash_bank *cfi_info = bank->driver_priv;
2049         struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
2050         struct cfi_unlock_addresses *unlock_addresses = param;
2051
2052         pri_ext->_unlock1 = unlock_addresses->unlock1;
2053         pri_ext->_unlock2 = unlock_addresses->unlock2;
2054 }
2055
2056
2057 static int cfi_query_string(struct flash_bank *bank, int address)
2058 {
2059         struct cfi_flash_bank *cfi_info = bank->driver_priv;
2060         int retval;
2061
2062         if ((retval = cfi_send_command(bank, 0x98, flash_address(bank, 0, address))) != ERROR_OK)
2063         {
2064                 return retval;
2065         }
2066
2067         cfi_info->qry[0] = cfi_query_u8(bank, 0, 0x10);
2068         cfi_info->qry[1] = cfi_query_u8(bank, 0, 0x11);
2069         cfi_info->qry[2] = cfi_query_u8(bank, 0, 0x12);
2070
2071         LOG_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]);
2072
2073         if ((cfi_info->qry[0] != 'Q') || (cfi_info->qry[1] != 'R') || (cfi_info->qry[2] != 'Y'))
2074         {
2075                 if ((retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0))) != ERROR_OK)
2076                 {
2077                         return retval;
2078                 }
2079                 if ((retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0))) != ERROR_OK)
2080                 {
2081                         return retval;
2082                 }
2083                 LOG_ERROR("Could not probe bank: no QRY");
2084                 return ERROR_FLASH_BANK_INVALID;
2085         }
2086
2087         return ERROR_OK;
2088 }
2089
2090 static int cfi_probe(struct flash_bank *bank)
2091 {
2092         struct cfi_flash_bank *cfi_info = bank->driver_priv;
2093         struct target *target = bank->target;
2094         int num_sectors = 0;
2095         int i;
2096         int sector = 0;
2097         uint32_t unlock1 = 0x555;
2098         uint32_t unlock2 = 0x2aa;
2099         int retval;
2100
2101         if (bank->target->state != TARGET_HALTED)
2102         {
2103                 LOG_ERROR("Target not halted");
2104                 return ERROR_TARGET_NOT_HALTED;
2105         }
2106
2107         cfi_info->probed = 0;
2108
2109         /* JEDEC standard JESD21C uses 0x5555 and 0x2aaa as unlock addresses,
2110          * while CFI compatible AMD/Spansion flashes use 0x555 and 0x2aa
2111          */
2112         if (cfi_info->jedec_probe)
2113         {
2114                 unlock1 = 0x5555;
2115                 unlock2 = 0x2aaa;
2116         }
2117
2118         /* switch to read identifier codes mode ("AUTOSELECT") */
2119         if ((retval = cfi_send_command(bank, 0xaa, flash_address(bank, 0, unlock1))) != ERROR_OK)
2120         {
2121                 return retval;
2122         }
2123         if ((retval = cfi_send_command(bank, 0x55, flash_address(bank, 0, unlock2))) != ERROR_OK)
2124         {
2125                 return retval;
2126         }
2127         if ((retval = cfi_send_command(bank, 0x90, flash_address(bank, 0, unlock1))) != ERROR_OK)
2128         {
2129                 return retval;
2130         }
2131
2132         if (bank->chip_width == 1)
2133         {
2134                 uint8_t manufacturer, device_id;
2135                 if ((retval = target_read_u8(target, flash_address(bank, 0, 0x00), &manufacturer)) != ERROR_OK)
2136                 {
2137                         return retval;
2138                 }
2139                 if ((retval = target_read_u8(target, flash_address(bank, 0, 0x01), &device_id)) != ERROR_OK)
2140                 {
2141                         return retval;
2142                 }
2143                 cfi_info->manufacturer = manufacturer;
2144                 cfi_info->device_id = device_id;
2145         }
2146         else if (bank->chip_width == 2)
2147         {
2148                 if ((retval = target_read_u16(target, flash_address(bank, 0, 0x00), &cfi_info->manufacturer)) != ERROR_OK)
2149                 {
2150                         return retval;
2151                 }
2152                 if ((retval = target_read_u16(target, flash_address(bank, 0, 0x01), &cfi_info->device_id)) != ERROR_OK)
2153                 {
2154                         return retval;
2155                 }
2156         }
2157
2158         LOG_INFO("Flash Manufacturer/Device: 0x%04x 0x%04x", cfi_info->manufacturer, cfi_info->device_id);
2159         /* switch back to read array mode */
2160         if ((retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x00))) != ERROR_OK)
2161         {
2162                 return retval;
2163         }
2164         if ((retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x00))) != ERROR_OK)
2165         {
2166                 return retval;
2167         }
2168
2169         /* check device/manufacturer ID for known non-CFI flashes. */
2170         cfi_fixup_non_cfi(bank);
2171
2172         /* query only if this is a CFI compatible flash,
2173          * otherwise the relevant info has already been filled in
2174          */
2175         if (cfi_info->not_cfi == 0)
2176         {
2177                 int retval;
2178
2179                 /* enter CFI query mode
2180                  * according to JEDEC Standard No. 68.01,
2181                  * a single bus sequence with address = 0x55, data = 0x98 should put
2182                  * the device into CFI query mode.
2183                  *
2184                  * SST flashes clearly violate this, and we will consider them incompatbile for now
2185                  */
2186
2187                 retval = cfi_query_string(bank, 0x55);
2188                 if (retval != ERROR_OK)
2189                 {
2190                         /*
2191                          * Spansion S29WS-N CFI query fix is to try 0x555 if 0x55 fails. Should
2192                          * be harmless enough:
2193                          *
2194                          * http://www.infradead.org/pipermail/linux-mtd/2005-September/013618.html
2195                          */
2196                         LOG_USER("Try workaround w/0x555 instead of 0x55 to get QRY.");
2197                         retval = cfi_query_string(bank, 0x555);
2198                 }
2199                 if (retval != ERROR_OK)
2200                         return retval;
2201
2202                 cfi_info->pri_id = cfi_query_u16(bank, 0, 0x13);
2203                 cfi_info->pri_addr = cfi_query_u16(bank, 0, 0x15);
2204                 cfi_info->alt_id = cfi_query_u16(bank, 0, 0x17);
2205                 cfi_info->alt_addr = cfi_query_u16(bank, 0, 0x19);
2206
2207                 LOG_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);
2208
2209                 cfi_info->vcc_min = cfi_query_u8(bank, 0, 0x1b);
2210                 cfi_info->vcc_max = cfi_query_u8(bank, 0, 0x1c);
2211                 cfi_info->vpp_min = cfi_query_u8(bank, 0, 0x1d);
2212                 cfi_info->vpp_max = cfi_query_u8(bank, 0, 0x1e);
2213                 cfi_info->word_write_timeout_typ = cfi_query_u8(bank, 0, 0x1f);
2214                 cfi_info->buf_write_timeout_typ = cfi_query_u8(bank, 0, 0x20);
2215                 cfi_info->block_erase_timeout_typ = cfi_query_u8(bank, 0, 0x21);
2216                 cfi_info->chip_erase_timeout_typ = cfi_query_u8(bank, 0, 0x22);
2217                 cfi_info->word_write_timeout_max = cfi_query_u8(bank, 0, 0x23);
2218                 cfi_info->buf_write_timeout_max = cfi_query_u8(bank, 0, 0x24);
2219                 cfi_info->block_erase_timeout_max = cfi_query_u8(bank, 0, 0x25);
2220                 cfi_info->chip_erase_timeout_max = cfi_query_u8(bank, 0, 0x26);
2221
2222                 LOG_DEBUG("Vcc min: %x.%x, Vcc max: %x.%x, Vpp min: %u.%x, Vpp max: %u.%x",
2223                         (cfi_info->vcc_min & 0xf0) >> 4, cfi_info->vcc_min & 0x0f,
2224                         (cfi_info->vcc_max & 0xf0) >> 4, cfi_info->vcc_max & 0x0f,
2225                         (cfi_info->vpp_min & 0xf0) >> 4, cfi_info->vpp_min & 0x0f,
2226                         (cfi_info->vpp_max & 0xf0) >> 4, cfi_info->vpp_max & 0x0f);
2227                 LOG_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,
2228                         1 << cfi_info->block_erase_timeout_typ, 1 << cfi_info->chip_erase_timeout_typ);
2229                 LOG_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),
2230                         (1 << cfi_info->buf_write_timeout_max) * (1 << cfi_info->buf_write_timeout_typ),
2231                         (1 << cfi_info->block_erase_timeout_max) * (1 << cfi_info->block_erase_timeout_typ),
2232                         (1 << cfi_info->chip_erase_timeout_max) * (1 << cfi_info->chip_erase_timeout_typ));
2233
2234                 cfi_info->dev_size = 1 << cfi_query_u8(bank, 0, 0x27);
2235                 cfi_info->interface_desc = cfi_query_u16(bank, 0, 0x28);
2236                 cfi_info->max_buf_write_size = cfi_query_u16(bank, 0, 0x2a);
2237                 cfi_info->num_erase_regions = cfi_query_u8(bank, 0, 0x2c);
2238
2239                 LOG_DEBUG("size: 0x%" PRIx32 ", interface desc: %i, max buffer write size: %x", cfi_info->dev_size, cfi_info->interface_desc, (1 << cfi_info->max_buf_write_size));
2240
2241                 if (cfi_info->num_erase_regions)
2242                 {
2243                         cfi_info->erase_region_info = malloc(4 * cfi_info->num_erase_regions);
2244                         for (i = 0; i < cfi_info->num_erase_regions; i++)
2245                         {
2246                                 cfi_info->erase_region_info[i] = cfi_query_u32(bank, 0, 0x2d + (4 * i));
2247                                 LOG_DEBUG("erase region[%i]: %" PRIu32 " blocks of size 0x%" PRIx32 "",
2248                                           i,
2249                                           (cfi_info->erase_region_info[i] & 0xffff) + 1,
2250                                           (cfi_info->erase_region_info[i] >> 16) * 256);
2251                         }
2252                 }
2253                 else
2254                 {
2255                         cfi_info->erase_region_info = NULL;
2256                 }
2257
2258                 /* We need to read the primary algorithm extended query table before calculating
2259                  * the sector layout to be able to apply fixups
2260                  */
2261                 switch (cfi_info->pri_id)
2262                 {
2263                         /* Intel command set (standard and extended) */
2264                         case 0x0001:
2265                         case 0x0003:
2266                                 cfi_read_intel_pri_ext(bank);
2267                                 break;
2268                         /* AMD/Spansion, Atmel, ... command set */
2269                         case 0x0002:
2270                                 cfi_info->status_poll_mask = CFI_STATUS_POLL_MASK_DQ5_DQ6_DQ7; /* default for all CFI flashs */
2271                                 cfi_read_0002_pri_ext(bank);
2272                                 break;
2273                         default:
2274                                 LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
2275                                 break;
2276                 }
2277
2278                 /* return to read array mode
2279                  * we use both reset commands, as some Intel flashes fail to recognize the 0xF0 command
2280                  */
2281                 if ((retval = cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0))) != ERROR_OK)
2282                 {
2283                         return retval;
2284                 }
2285                 if ((retval = cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0))) != ERROR_OK)
2286                 {
2287                         return retval;
2288                 }
2289         } /* end CFI case */
2290
2291         /* apply fixups depending on the primary command set */
2292         switch (cfi_info->pri_id)
2293         {
2294                 /* Intel command set (standard and extended) */
2295                 case 0x0001:
2296                 case 0x0003:
2297                         cfi_fixup(bank, cfi_0001_fixups);
2298                         break;
2299                 /* AMD/Spansion, Atmel, ... command set */
2300                 case 0x0002:
2301                         cfi_fixup(bank, cfi_0002_fixups);
2302                         break;
2303                 default:
2304                         LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
2305                         break;
2306         }
2307
2308         if ((cfi_info->dev_size * bank->bus_width / bank->chip_width) != bank->size)
2309         {
2310                 LOG_WARNING("configuration specifies 0x%" PRIx32 " size, but a 0x%" PRIx32 " size flash was found", bank->size, cfi_info->dev_size);
2311         }
2312
2313         if (cfi_info->num_erase_regions == 0)
2314         {
2315                 /* a device might have only one erase block, spanning the whole device */
2316                 bank->num_sectors = 1;
2317                 bank->sectors = malloc(sizeof(struct flash_sector));
2318
2319                 bank->sectors[sector].offset = 0x0;
2320                 bank->sectors[sector].size = bank->size;
2321                 bank->sectors[sector].is_erased = -1;
2322                 bank->sectors[sector].is_protected = -1;
2323         }
2324         else
2325         {
2326                 uint32_t offset = 0;
2327
2328                 for (i = 0; i < cfi_info->num_erase_regions; i++)
2329                 {
2330                         num_sectors += (cfi_info->erase_region_info[i] & 0xffff) + 1;
2331                 }
2332
2333                 bank->num_sectors = num_sectors;
2334                 bank->sectors = malloc(sizeof(struct flash_sector) * num_sectors);
2335
2336                 for (i = 0; i < cfi_info->num_erase_regions; i++)
2337                 {
2338                         uint32_t j;
2339                         for (j = 0; j < (cfi_info->erase_region_info[i] & 0xffff) + 1; j++)
2340                         {
2341                                 bank->sectors[sector].offset = offset;
2342                                 bank->sectors[sector].size = ((cfi_info->erase_region_info[i] >> 16) * 256) * bank->bus_width / bank->chip_width;
2343                                 offset += bank->sectors[sector].size;
2344                                 bank->sectors[sector].is_erased = -1;
2345                                 bank->sectors[sector].is_protected = -1;
2346                                 sector++;
2347                         }
2348                 }
2349                 if (offset != (cfi_info->dev_size * bank->bus_width / bank->chip_width))
2350                 {
2351                         LOG_WARNING("CFI size is 0x%" PRIx32 ", but total sector size is 0x%" PRIx32 "", \
2352                                 (cfi_info->dev_size * bank->bus_width / bank->chip_width), offset);
2353                 }
2354         }
2355
2356         cfi_info->probed = 1;
2357
2358         return ERROR_OK;
2359 }
2360
2361 static int cfi_auto_probe(struct flash_bank *bank)
2362 {
2363         struct cfi_flash_bank *cfi_info = bank->driver_priv;
2364         if (cfi_info->probed)
2365                 return ERROR_OK;
2366         return cfi_probe(bank);
2367 }
2368
2369
2370 static int cfi_intel_protect_check(struct flash_bank *bank)
2371 {
2372         int retval;
2373         struct cfi_flash_bank *cfi_info = bank->driver_priv;
2374         struct cfi_intel_pri_ext *pri_ext = cfi_info->pri_ext;
2375         int i;
2376
2377         /* check if block lock bits are supported on this device */
2378         if (!(pri_ext->blk_status_reg_mask & 0x1))
2379                 return ERROR_FLASH_OPERATION_FAILED;
2380
2381         if ((retval = cfi_send_command(bank, 0x90, flash_address(bank, 0, 0x55))) != ERROR_OK)
2382         {
2383                 return retval;
2384         }
2385
2386         for (i = 0; i < bank->num_sectors; i++)
2387         {
2388                 uint8_t block_status = cfi_get_u8(bank, i, 0x2);
2389
2390                 if (block_status & 1)
2391                         bank->sectors[i].is_protected = 1;
2392                 else
2393                         bank->sectors[i].is_protected = 0;
2394         }
2395
2396         return cfi_send_command(bank, 0xff, flash_address(bank, 0, 0x0));
2397 }
2398
2399 static int cfi_spansion_protect_check(struct flash_bank *bank)
2400 {
2401         int retval;
2402         struct cfi_flash_bank *cfi_info = bank->driver_priv;
2403         struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
2404         int i;
2405
2406         if ((retval = cfi_send_command(bank, 0xaa, flash_address(bank, 0, pri_ext->_unlock1))) != ERROR_OK)
2407         {
2408                 return retval;
2409         }
2410
2411         if ((retval = cfi_send_command(bank, 0x55, flash_address(bank, 0, pri_ext->_unlock2))) != ERROR_OK)
2412         {
2413                 return retval;
2414         }
2415
2416         if ((retval = cfi_send_command(bank, 0x90, flash_address(bank, 0, pri_ext->_unlock1))) != ERROR_OK)
2417         {
2418                 return retval;
2419         }
2420
2421         for (i = 0; i < bank->num_sectors; i++)
2422         {
2423                 uint8_t block_status = cfi_get_u8(bank, i, 0x2);
2424
2425                 if (block_status & 1)
2426                         bank->sectors[i].is_protected = 1;
2427                 else
2428                         bank->sectors[i].is_protected = 0;
2429         }
2430
2431         return cfi_send_command(bank, 0xf0, flash_address(bank, 0, 0x0));
2432 }
2433
2434 static int cfi_protect_check(struct flash_bank *bank)
2435 {
2436         struct cfi_flash_bank *cfi_info = bank->driver_priv;
2437
2438         if (bank->target->state != TARGET_HALTED)
2439         {
2440                 LOG_ERROR("Target not halted");
2441                 return ERROR_TARGET_NOT_HALTED;
2442         }
2443
2444         if (cfi_info->qry[0] != 'Q')
2445                 return ERROR_FLASH_BANK_NOT_PROBED;
2446
2447         switch (cfi_info->pri_id)
2448         {
2449                 case 1:
2450                 case 3:
2451                         return cfi_intel_protect_check(bank);
2452                         break;
2453                 case 2:
2454                         return cfi_spansion_protect_check(bank);
2455                         break;
2456                 default:
2457                         LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
2458                         break;
2459         }
2460
2461         return ERROR_OK;
2462 }
2463
2464 static int cfi_info(struct flash_bank *bank, char *buf, int buf_size)
2465 {
2466         int printed;
2467         struct cfi_flash_bank *cfi_info = bank->driver_priv;
2468
2469         if (cfi_info->qry[0] == (char)-1)
2470         {
2471                 printed = snprintf(buf, buf_size, "\ncfi flash bank not probed yet\n");
2472                 return ERROR_OK;
2473         }
2474
2475         if (cfi_info->not_cfi == 0)
2476                 printed = snprintf(buf, buf_size, "\ncfi information:\n");
2477         else
2478                 printed = snprintf(buf, buf_size, "\nnon-cfi flash:\n");
2479         buf += printed;
2480         buf_size -= printed;
2481
2482         printed = snprintf(buf, buf_size, "\nmfr: 0x%4.4x, id:0x%4.4x\n",
2483                 cfi_info->manufacturer, cfi_info->device_id);
2484         buf += printed;
2485         buf_size -= printed;
2486
2487         if (cfi_info->not_cfi == 0)
2488         {
2489         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);
2490         buf += printed;
2491         buf_size -= printed;
2492
2493                 printed = snprintf(buf, buf_size, "Vcc min: %x.%x, Vcc max: %x.%x, Vpp min: %u.%x, Vpp max: %u.%x\n",
2494                                    (cfi_info->vcc_min & 0xf0) >> 4, cfi_info->vcc_min & 0x0f,
2495         (cfi_info->vcc_max & 0xf0) >> 4, cfi_info->vcc_max & 0x0f,
2496         (cfi_info->vpp_min & 0xf0) >> 4, cfi_info->vpp_min & 0x0f,
2497         (cfi_info->vpp_max & 0xf0) >> 4, cfi_info->vpp_max & 0x0f);
2498         buf += printed;
2499         buf_size -= printed;
2500
2501                 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",
2502                                    1 << cfi_info->word_write_timeout_typ,
2503                                    1 << cfi_info->buf_write_timeout_typ,
2504                                    1 << cfi_info->block_erase_timeout_typ,
2505                                    1 << cfi_info->chip_erase_timeout_typ);
2506         buf += printed;
2507         buf_size -= printed;
2508
2509                 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",
2510                                    (1 << cfi_info->word_write_timeout_max) * (1 << cfi_info->word_write_timeout_typ),
2511                   (1 << cfi_info->buf_write_timeout_max) * (1 << cfi_info->buf_write_timeout_typ),
2512                   (1 << cfi_info->block_erase_timeout_max) * (1 << cfi_info->block_erase_timeout_typ),
2513                   (1 << cfi_info->chip_erase_timeout_max) * (1 << cfi_info->chip_erase_timeout_typ));
2514         buf += printed;
2515         buf_size -= printed;
2516
2517                 printed = snprintf(buf, buf_size, "size: 0x%" PRIx32 ", interface desc: %i, max buffer write size: %x\n",
2518                                    cfi_info->dev_size,
2519                                    cfi_info->interface_desc,
2520                                    1 << cfi_info->max_buf_write_size);
2521         buf += printed;
2522         buf_size -= printed;
2523
2524         switch (cfi_info->pri_id)
2525         {
2526                 case 1:
2527                 case 3:
2528                         cfi_intel_info(bank, buf, buf_size);
2529                         break;
2530                 case 2:
2531                         cfi_spansion_info(bank, buf, buf_size);
2532                         break;
2533                 default:
2534                         LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
2535                         break;
2536         }
2537         }
2538
2539         return ERROR_OK;
2540 }
2541
2542 struct flash_driver cfi_flash = {
2543         .name = "cfi",
2544         .flash_bank_command = cfi_flash_bank_command,
2545         .erase = cfi_erase,
2546         .protect = cfi_protect,
2547         .write = cfi_write,
2548         .probe = cfi_probe,
2549         .auto_probe = cfi_auto_probe,
2550         .erase_check = default_flash_blank_check,
2551         .protect_check = cfi_protect_check,
2552         .info = cfi_info,
2553 };