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   1 /***************************************************************************
   2  *   Copyright (C) 2009 by Simon Qian                                      *
   3  *   SimonQian@SimonQian.com                                               *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
  19  ***************************************************************************/
  20
  21 #ifdef HAVE_CONFIG_H
  22 #include "config.h"
  23 #endif
  24
  25 #include "imp.h"
  26 #include <target/avrt.h>
  27
  28 /* AVR_JTAG_Instructions */
  29 #define AVR_JTAG_INS_LEN                                        4
  30 /* Public Instructions: */
  31 #define AVR_JTAG_INS_EXTEST                                     0x00
  32 #define AVR_JTAG_INS_IDCODE                                     0x01
  33 #define AVR_JTAG_INS_SAMPLE_PRELOAD                             0x02
  34 #define AVR_JTAG_INS_BYPASS                                     0x0F
  35 /* AVR Specified Public Instructions: */
  36 #define AVR_JTAG_INS_AVR_RESET                                  0x0C
  37 #define AVR_JTAG_INS_PROG_ENABLE                                0x04
  38 #define AVR_JTAG_INS_PROG_COMMANDS                              0x05
  39 #define AVR_JTAG_INS_PROG_PAGELOAD                              0x06
  40 #define AVR_JTAG_INS_PROG_PAGEREAD                              0x07
  41
  42 /* Data Registers: */
  43 #define AVR_JTAG_REG_Bypass_Len                                 1
  44 #define AVR_JTAG_REG_DeviceID_Len                               32
  45
  46 #define AVR_JTAG_REG_Reset_Len                                  1
  47 #define AVR_JTAG_REG_JTAGID_Len                                 32
  48 #define AVR_JTAG_REG_ProgrammingEnable_Len                      16
  49 #define AVR_JTAG_REG_ProgrammingCommand_Len                     15
  50 #define AVR_JTAG_REG_FlashDataByte_Len                          16
  51
  52 struct avrf_type {
  53         char name[15];
  54         uint16_t chip_id;
  55         int flash_page_size;
  56         int flash_page_num;
  57         int eeprom_page_size;
  58         int eeprom_page_num;
  59 };
  60
  61 struct avrf_flash_bank {
  62         int ppage_size;
  63         int probed;
  64 };
  65
  66 static const struct avrf_type avft_chips_info[] = {
  67 /*      name, chip_id,  flash_page_size, flash_page_num,
  68  *                      eeprom_page_size, eeprom_page_num
  69  */
  70         {"atmega128", 0x9702, 256, 512, 8, 512},
  71         {"at90can128", 0x9781, 256, 512, 8, 512},
  72         {"atmega164p", 0x940a, 128, 128, 4, 128},
  73         {"atmega324p", 0x9508, 128, 256, 4, 256},
  74         {"atmega324pa", 0x9511, 128, 256, 4, 256},
  75         {"atmega644p", 0x960a, 256, 256, 8, 256},
  76         {"atmega1284p", 0x9705, 256, 512, 8, 512},
  77 };
  78
  79 /* avr program functions */
  80 static int avr_jtag_reset(struct avr_common *avr, uint32_t reset)
  81 {
  82         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_AVR_RESET);
  83         avr_jtag_senddat(avr->jtag_info.tap, NULL, reset, AVR_JTAG_REG_Reset_Len);
  84
  85         return ERROR_OK;
  86 }
  87
  88 static int avr_jtag_read_jtagid(struct avr_common *avr, uint32_t *id)
  89 {
  90         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_IDCODE);
  91         avr_jtag_senddat(avr->jtag_info.tap, id, 0, AVR_JTAG_REG_JTAGID_Len);
  92
  93         return ERROR_OK;
  94 }
  95
  96 static int avr_jtagprg_enterprogmode(struct avr_common *avr)
  97 {
  98         avr_jtag_reset(avr, 1);
  99
 100         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_ENABLE);
 101         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0xA370, AVR_JTAG_REG_ProgrammingEnable_Len);
 102
 103         return ERROR_OK;
 104 }
 105
 106 static int avr_jtagprg_leaveprogmode(struct avr_common *avr)
 107 {
 108         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_COMMANDS);
 109         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x2300, AVR_JTAG_REG_ProgrammingCommand_Len);
 110         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3300, AVR_JTAG_REG_ProgrammingCommand_Len);
 111
 112         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_ENABLE);
 113         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0, AVR_JTAG_REG_ProgrammingEnable_Len);
 114
 115         avr_jtag_reset(avr, 0);
 116
 117         return ERROR_OK;
 118 }
 119
 120 static int avr_jtagprg_chiperase(struct avr_common *avr)
 121 {
 122         uint32_t poll_value;
 123
 124         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_COMMANDS);
 125         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x2380, AVR_JTAG_REG_ProgrammingCommand_Len);
 126         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3180, AVR_JTAG_REG_ProgrammingCommand_Len);
 127         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3380, AVR_JTAG_REG_ProgrammingCommand_Len);
 128         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3380, AVR_JTAG_REG_ProgrammingCommand_Len);
 129
 130         do {
 131                 poll_value = 0;
 132                 avr_jtag_senddat(avr->jtag_info.tap,
 133                         &poll_value,
 134                         0x3380,
 135                         AVR_JTAG_REG_ProgrammingCommand_Len);
 136                 if (ERROR_OK != mcu_execute_queue())
 137                         return ERROR_FAIL;
 138                 LOG_DEBUG("poll_value = 0x%04" PRIx32 "", poll_value);
 139         } while (!(poll_value & 0x0200));
 140
 141         return ERROR_OK;
 142 }
 143
 144 static int avr_jtagprg_writeflashpage(struct avr_common *avr,
 145         uint8_t *page_buf,
 146         uint32_t buf_size,
 147         uint32_t addr,
 148         uint32_t page_size)
 149 {
 150         uint32_t i, poll_value;
 151
 152         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_COMMANDS);
 153         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x2310, AVR_JTAG_REG_ProgrammingCommand_Len);
 154
 155         /* load addr high byte */
 156         avr_jtag_senddat(avr->jtag_info.tap,
 157                 NULL,
 158                 0x0700 | ((addr >> 9) & 0xFF),
 159                 AVR_JTAG_REG_ProgrammingCommand_Len);
 160
 161         /* load addr low byte */
 162         avr_jtag_senddat(avr->jtag_info.tap,
 163                 NULL,
 164                 0x0300 | ((addr >> 1) & 0xFF),
 165                 AVR_JTAG_REG_ProgrammingCommand_Len);
 166
 167         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_PAGELOAD);
 168
 169         for (i = 0; i < page_size; i++) {
 170                 if (i < buf_size)
 171                         avr_jtag_senddat(avr->jtag_info.tap, NULL, page_buf[i], 8);
 172                 else
 173                         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0xFF, 8);
 174         }
 175
 176         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_COMMANDS);
 177
 178         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3700, AVR_JTAG_REG_ProgrammingCommand_Len);
 179         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3500, AVR_JTAG_REG_ProgrammingCommand_Len);
 180         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3700, AVR_JTAG_REG_ProgrammingCommand_Len);
 181         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3700, AVR_JTAG_REG_ProgrammingCommand_Len);
 182
 183         do {
 184                 poll_value = 0;
 185                 avr_jtag_senddat(avr->jtag_info.tap,
 186                         &poll_value,
 187                         0x3700,
 188                         AVR_JTAG_REG_ProgrammingCommand_Len);
 189                 if (ERROR_OK != mcu_execute_queue())
 190                         return ERROR_FAIL;
 191                 LOG_DEBUG("poll_value = 0x%04" PRIx32 "", poll_value);
 192         } while (!(poll_value & 0x0200));
 193
 194         return ERROR_OK;
 195 }
 196
 197 FLASH_BANK_COMMAND_HANDLER(avrf_flash_bank_command)
 198 {
 199         struct avrf_flash_bank *avrf_info;
 200
 201         if (CMD_ARGC < 6)
 202                 return ERROR_COMMAND_SYNTAX_ERROR;
 203
 204         avrf_info = malloc(sizeof(struct avrf_flash_bank));
 205         bank->driver_priv = avrf_info;
 206
 207         avrf_info->probed = 0;
 208
 209         return ERROR_OK;
 210 }
 211
 212 static int avrf_erase(struct flash_bank *bank, int first, int last)
 213 {
 214         struct target *target = bank->target;
 215         struct avr_common *avr = target->arch_info;
 216         int status;
 217
 218         LOG_DEBUG("%s", __func__);
 219
 220         if (target->state != TARGET_HALTED) {
 221                 LOG_ERROR("Target not halted");
 222                 return ERROR_TARGET_NOT_HALTED;
 223         }
 224
 225         status = avr_jtagprg_enterprogmode(avr);
 226         if (status != ERROR_OK)
 227                 return status;
 228
 229         status = avr_jtagprg_chiperase(avr);
 230         if (status != ERROR_OK)
 231                 return status;
 232
 233         return avr_jtagprg_leaveprogmode(avr);
 234 }
 235
 236 static int avrf_protect(struct flash_bank *bank, int set, int first, int last)
 237 {
 238         LOG_INFO("%s", __func__);
 239         return ERROR_OK;
 240 }
 241
 242 static int avrf_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
 243 {
 244         struct target *target = bank->target;
 245         struct avr_common *avr = target->arch_info;
 246         uint32_t cur_size, cur_buffer_size, page_size;
 247
 248         if (bank->target->state != TARGET_HALTED) {
 249                 LOG_ERROR("Target not halted");
 250                 return ERROR_TARGET_NOT_HALTED;
 251         }
 252
 253         page_size = bank->sectors[0].size;
 254         if ((offset % page_size) != 0) {
 255                 LOG_WARNING("offset 0x%" PRIx32 " breaks required %" PRIu32 "-byte alignment",
 256                         offset,
 257                         page_size);
 258                 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
 259         }
 260
 261         LOG_DEBUG("offset is 0x%08" PRIx32 "", offset);
 262         LOG_DEBUG("count is %" PRId32 "", count);
 263
 264         if (ERROR_OK != avr_jtagprg_enterprogmode(avr))
 265                 return ERROR_FAIL;
 266
 267         cur_size = 0;
 268         while (count > 0) {
 269                 if (count > page_size)
 270                         cur_buffer_size = page_size;
 271                 else
 272                         cur_buffer_size = count;
 273                 avr_jtagprg_writeflashpage(avr,
 274                         buffer + cur_size,
 275                         cur_buffer_size,
 276                         offset + cur_size,
 277                         page_size);
 278                 count -= cur_buffer_size;
 279                 cur_size += cur_buffer_size;
 280
 281                 keep_alive();
 282         }
 283
 284         return avr_jtagprg_leaveprogmode(avr);
 285 }
 286
 287 #define EXTRACT_MFG(X)  (((X) & 0xffe) >> 1)
 288 #define EXTRACT_PART(X) (((X) & 0xffff000) >> 12)
 289 #define EXTRACT_VER(X)  (((X) & 0xf0000000) >> 28)
 290
 291 static int avrf_probe(struct flash_bank *bank)
 292 {
 293         struct target *target = bank->target;
 294         struct avrf_flash_bank *avrf_info = bank->driver_priv;
 295         struct avr_common *avr = target->arch_info;
 296         const struct avrf_type *avr_info = NULL;
 297         int i;
 298         uint32_t device_id;
 299
 300         if (bank->target->state != TARGET_HALTED) {
 301                 LOG_ERROR("Target not halted");
 302                 return ERROR_TARGET_NOT_HALTED;
 303         }
 304
 305         avrf_info->probed = 0;
 306
 307         avr_jtag_read_jtagid(avr, &device_id);
 308         if (ERROR_OK != mcu_execute_queue())
 309                 return ERROR_FAIL;
 310
 311         LOG_INFO("device id = 0x%08" PRIx32 "", device_id);
 312         if (EXTRACT_MFG(device_id) != 0x1F)
 313                 LOG_ERROR("0x%" PRIx32 " is invalid Manufacturer for avr, 0x%X is expected",
 314                         EXTRACT_MFG(device_id),
 315                         0x1F);
 316
 317         for (i = 0; i < (int)ARRAY_SIZE(avft_chips_info); i++) {
 318                 if (avft_chips_info[i].chip_id == EXTRACT_PART(device_id)) {
 319                         avr_info = &avft_chips_info[i];
 320                         LOG_INFO("target device is %s", avr_info->name);
 321                         break;
 322                 }
 323         }
 324
 325         if (avr_info != NULL) {
 326                 if (bank->sectors) {
 327                         free(bank->sectors);
 328                         bank->sectors = NULL;
 329                 }
 330
 331                 /* chip found */
 332                 bank->base = 0x00000000;
 333                 bank->size = (avr_info->flash_page_size * avr_info->flash_page_num);
 334                 bank->num_sectors = avr_info->flash_page_num;
 335                 bank->sectors = malloc(sizeof(struct flash_sector) * avr_info->flash_page_num);
 336
 337                 for (i = 0; i < avr_info->flash_page_num; i++) {
 338                         bank->sectors[i].offset = i * avr_info->flash_page_size;
 339                         bank->sectors[i].size = avr_info->flash_page_size;
 340                         bank->sectors[i].is_erased = -1;
 341                         bank->sectors[i].is_protected = 1;
 342                 }
 343
 344                 avrf_info->probed = 1;
 345                 return ERROR_OK;
 346         } else {
 347                 /* chip not supported */
 348                 LOG_ERROR("0x%" PRIx32 " is not support for avr", EXTRACT_PART(device_id));
 349
 350                 avrf_info->probed = 1;
 351                 return ERROR_FAIL;
 352         }
 353 }
 354
 355 static int avrf_auto_probe(struct flash_bank *bank)
 356 {
 357         struct avrf_flash_bank *avrf_info = bank->driver_priv;
 358         if (avrf_info->probed)
 359                 return ERROR_OK;
 360         return avrf_probe(bank);
 361 }
 362
 363 static int avrf_protect_check(struct flash_bank *bank)
 364 {
 365         LOG_INFO("%s", __func__);
 366         return ERROR_OK;
 367 }
 368
 369 static int avrf_info(struct flash_bank *bank, char *buf, int buf_size)
 370 {
 371         struct target *target = bank->target;
 372         struct avr_common *avr = target->arch_info;
 373         const struct avrf_type *avr_info = NULL;
 374         int i;
 375         uint32_t device_id;
 376
 377         if (bank->target->state != TARGET_HALTED) {
 378                 LOG_ERROR("Target not halted");
 379                 return ERROR_TARGET_NOT_HALTED;
 380         }
 381
 382         avr_jtag_read_jtagid(avr, &device_id);
 383         if (ERROR_OK != mcu_execute_queue())
 384                 return ERROR_FAIL;
 385
 386         LOG_INFO("device id = 0x%08" PRIx32 "", device_id);
 387         if (EXTRACT_MFG(device_id) != 0x1F)
 388                 LOG_ERROR("0x%" PRIx32 " is invalid Manufacturer for avr, 0x%X is expected",
 389                         EXTRACT_MFG(device_id),
 390                         0x1F);
 391
 392         for (i = 0; i < (int)ARRAY_SIZE(avft_chips_info); i++) {
 393                 if (avft_chips_info[i].chip_id == EXTRACT_PART(device_id)) {
 394                         avr_info = &avft_chips_info[i];
 395                         LOG_INFO("target device is %s", avr_info->name);
 396
 397                         break;
 398                 }
 399         }
 400
 401         if (avr_info != NULL) {
 402                 /* chip found */
 403                 snprintf(buf, buf_size, "%s - Rev: 0x%" PRIx32 "", avr_info->name,
 404                         EXTRACT_VER(device_id));
 405                 return ERROR_OK;
 406         } else {
 407                 /* chip not supported */
 408                 snprintf(buf, buf_size, "Cannot identify target as a avr\n");
 409                 return ERROR_FLASH_OPERATION_FAILED;
 410         }
 411 }
 412
 413 static int avrf_mass_erase(struct flash_bank *bank)
 414 {
 415         struct target *target = bank->target;
 416         struct avr_common *avr = target->arch_info;
 417
 418         if (target->state != TARGET_HALTED) {
 419                 LOG_ERROR("Target not halted");
 420                 return ERROR_TARGET_NOT_HALTED;
 421         }
 422
 423         if ((ERROR_OK != avr_jtagprg_enterprogmode(avr))
 424             || (ERROR_OK != avr_jtagprg_chiperase(avr))
 425             || (ERROR_OK != avr_jtagprg_leaveprogmode(avr)))
 426                 return ERROR_FAIL;
 427
 428         return ERROR_OK;
 429 }
 430
 431 COMMAND_HANDLER(avrf_handle_mass_erase_command)
 432 {
 433         int i;
 434
 435         if (CMD_ARGC < 1)
 436                 return ERROR_COMMAND_SYNTAX_ERROR;
 437
 438         struct flash_bank *bank;
 439         int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
 440         if (ERROR_OK != retval)
 441                 return retval;
 442
 443         if (avrf_mass_erase(bank) == ERROR_OK) {
 444                 /* set all sectors as erased */
 445                 for (i = 0; i < bank->num_sectors; i++)
 446                         bank->sectors[i].is_erased = 1;
 447
 448                 command_print(CMD_CTX, "avr mass erase complete");
 449         } else
 450                 command_print(CMD_CTX, "avr mass erase failed");
 451
 452         LOG_DEBUG("%s", __func__);
 453         return ERROR_OK;
 454 }
 455
 456 static const struct command_registration avrf_exec_command_handlers[] = {
 457         {
 458                 .name = "mass_erase",
 459                 .usage = "<bank>",
 460                 .handler = avrf_handle_mass_erase_command,
 461                 .mode = COMMAND_EXEC,
 462                 .help = "erase entire device",
 463         },
 464         COMMAND_REGISTRATION_DONE
 465 };
 466 static const struct command_registration avrf_command_handlers[] = {
 467         {
 468                 .name = "avrf",
 469                 .mode = COMMAND_ANY,
 470                 .help = "AVR flash command group",
 471                 .usage = "",
 472                 .chain = avrf_exec_command_handlers,
 473         },
 474         COMMAND_REGISTRATION_DONE
 475 };
 476
 477 struct flash_driver avr_flash = {
 478         .name = "avr",
 479         .commands = avrf_command_handlers,
 480         .flash_bank_command = avrf_flash_bank_command,
 481         .erase = avrf_erase,
 482         .protect = avrf_protect,
 483         .write = avrf_write,
 484         .read = default_flash_read,
 485         .probe = avrf_probe,
 486         .auto_probe = avrf_auto_probe,
 487         .erase_check = default_flash_blank_check,
 488         .protect_check = avrf_protect_check,
 489         .info = avrf_info,
 490 };