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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, see <http://www.gnu.org/licenses/>. *
  17  ***************************************************************************/
  18
  19 #ifdef HAVE_CONFIG_H
  20 #include "config.h"
  21 #endif
  22
  23 #include "imp.h"
  24 #include <target/avrt.h>
  25
  26 /* AVR_JTAG_Instructions */
  27 #define AVR_JTAG_INS_LEN                                        4
  28 /* Public Instructions: */
  29 #define AVR_JTAG_INS_EXTEST                                     0x00
  30 #define AVR_JTAG_INS_IDCODE                                     0x01
  31 #define AVR_JTAG_INS_SAMPLE_PRELOAD                             0x02
  32 #define AVR_JTAG_INS_BYPASS                                     0x0F
  33 /* AVR Specified Public Instructions: */
  34 #define AVR_JTAG_INS_AVR_RESET                                  0x0C
  35 #define AVR_JTAG_INS_PROG_ENABLE                                0x04
  36 #define AVR_JTAG_INS_PROG_COMMANDS                              0x05
  37 #define AVR_JTAG_INS_PROG_PAGELOAD                              0x06
  38 #define AVR_JTAG_INS_PROG_PAGEREAD                              0x07
  39
  40 /* Data Registers: */
  41 #define AVR_JTAG_REG_Bypass_Len                                 1
  42 #define AVR_JTAG_REG_DeviceID_Len                               32
  43
  44 #define AVR_JTAG_REG_Reset_Len                                  1
  45 #define AVR_JTAG_REG_JTAGID_Len                                 32
  46 #define AVR_JTAG_REG_ProgrammingEnable_Len                      16
  47 #define AVR_JTAG_REG_ProgrammingCommand_Len                     15
  48 #define AVR_JTAG_REG_FlashDataByte_Len                          16
  49
  50 struct avrf_type {
  51         char name[15];
  52         uint16_t chip_id;
  53         int flash_page_size;
  54         int flash_page_num;
  55         int eeprom_page_size;
  56         int eeprom_page_num;
  57 };
  58
  59 struct avrf_flash_bank {
  60         int ppage_size;
  61         bool probed;
  62 };
  63
  64 static const struct avrf_type avft_chips_info[] = {
  65 /*      name, chip_id,  flash_page_size, flash_page_num,
  66  *                      eeprom_page_size, eeprom_page_num
  67  */
  68         {"atmega128", 0x9702, 256, 512, 8, 512},
  69         {"atmega128rfa1", 0xa701, 128, 512, 8, 512},
  70         {"atmega256rfr2", 0xa802, 256, 1024, 8, 1024},
  71         {"at90can128", 0x9781, 256, 512, 8, 512},
  72         {"at90usb128", 0x9782, 256, 512, 8, 512},
  73         {"atmega164p", 0x940a, 128, 128, 4, 128},
  74         {"atmega324p", 0x9508, 128, 256, 4, 256},
  75         {"atmega324pa", 0x9511, 128, 256, 4, 256},
  76         {"atmega644p", 0x960a, 256, 256, 8, 256},
  77         {"atmega1284p", 0x9705, 256, 512, 8, 512},
  78 };
  79
  80 /* avr program functions */
  81 static int avr_jtag_reset(struct avr_common *avr, uint32_t reset)
  82 {
  83         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_AVR_RESET);
  84         avr_jtag_senddat(avr->jtag_info.tap, NULL, reset, AVR_JTAG_REG_Reset_Len);
  85
  86         return ERROR_OK;
  87 }
  88
  89 static int avr_jtag_read_jtagid(struct avr_common *avr, uint32_t *id)
  90 {
  91         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_IDCODE);
  92         avr_jtag_senddat(avr->jtag_info.tap, id, 0, AVR_JTAG_REG_JTAGID_Len);
  93
  94         return ERROR_OK;
  95 }
  96
  97 static int avr_jtagprg_enterprogmode(struct avr_common *avr)
  98 {
  99         avr_jtag_reset(avr, 1);
 100
 101         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_ENABLE);
 102         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0xA370, AVR_JTAG_REG_ProgrammingEnable_Len);
 103
 104         return ERROR_OK;
 105 }
 106
 107 static int avr_jtagprg_leaveprogmode(struct avr_common *avr)
 108 {
 109         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_COMMANDS);
 110         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x2300, AVR_JTAG_REG_ProgrammingCommand_Len);
 111         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3300, AVR_JTAG_REG_ProgrammingCommand_Len);
 112
 113         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_ENABLE);
 114         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0, AVR_JTAG_REG_ProgrammingEnable_Len);
 115
 116         avr_jtag_reset(avr, 0);
 117
 118         return ERROR_OK;
 119 }
 120
 121 static int avr_jtagprg_chiperase(struct avr_common *avr)
 122 {
 123         uint32_t poll_value;
 124
 125         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_COMMANDS);
 126         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x2380, AVR_JTAG_REG_ProgrammingCommand_Len);
 127         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3180, AVR_JTAG_REG_ProgrammingCommand_Len);
 128         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3380, AVR_JTAG_REG_ProgrammingCommand_Len);
 129         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3380, AVR_JTAG_REG_ProgrammingCommand_Len);
 130
 131         do {
 132                 poll_value = 0;
 133                 avr_jtag_senddat(avr->jtag_info.tap,
 134                         &poll_value,
 135                         0x3380,
 136                         AVR_JTAG_REG_ProgrammingCommand_Len);
 137                 if (ERROR_OK != mcu_execute_queue())
 138                         return ERROR_FAIL;
 139                 LOG_DEBUG("poll_value = 0x%04" PRIx32 "", poll_value);
 140         } while (!(poll_value & 0x0200));
 141
 142         return ERROR_OK;
 143 }
 144
 145 static int avr_jtagprg_writeflashpage(struct avr_common *avr,
 146         const bool ext_addressing,
 147         const uint8_t *page_buf,
 148         uint32_t buf_size,
 149         uint32_t addr,
 150         uint32_t page_size)
 151 {
 152         uint32_t poll_value;
 153
 154         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_COMMANDS);
 155         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x2310, AVR_JTAG_REG_ProgrammingCommand_Len);
 156
 157         /* load extended high byte */
 158         if (ext_addressing)
 159                 avr_jtag_senddat(avr->jtag_info.tap,
 160                         NULL,
 161                         0x0b00 | ((addr >> 17) & 0xFF),
 162                         AVR_JTAG_REG_ProgrammingCommand_Len);
 163
 164         /* load addr high byte */
 165         avr_jtag_senddat(avr->jtag_info.tap,
 166                 NULL,
 167                 0x0700 | ((addr >> 9) & 0xFF),
 168                 AVR_JTAG_REG_ProgrammingCommand_Len);
 169
 170         /* load addr low byte */
 171         avr_jtag_senddat(avr->jtag_info.tap,
 172                 NULL,
 173                 0x0300 | ((addr >> 1) & 0xFF),
 174                 AVR_JTAG_REG_ProgrammingCommand_Len);
 175
 176         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_PAGELOAD);
 177
 178         for (uint32_t i = 0; i < page_size; i++) {
 179                 if (i < buf_size)
 180                         avr_jtag_senddat(avr->jtag_info.tap, NULL, page_buf[i], 8);
 181                 else
 182                         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0xFF, 8);
 183         }
 184
 185         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_COMMANDS);
 186
 187         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3700, AVR_JTAG_REG_ProgrammingCommand_Len);
 188         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3500, AVR_JTAG_REG_ProgrammingCommand_Len);
 189         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3700, AVR_JTAG_REG_ProgrammingCommand_Len);
 190         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3700, AVR_JTAG_REG_ProgrammingCommand_Len);
 191
 192         do {
 193                 poll_value = 0;
 194                 avr_jtag_senddat(avr->jtag_info.tap,
 195                         &poll_value,
 196                         0x3700,
 197                         AVR_JTAG_REG_ProgrammingCommand_Len);
 198                 if (ERROR_OK != mcu_execute_queue())
 199                         return ERROR_FAIL;
 200                 LOG_DEBUG("poll_value = 0x%04" PRIx32 "", poll_value);
 201         } while (!(poll_value & 0x0200));
 202
 203         return ERROR_OK;
 204 }
 205
 206 FLASH_BANK_COMMAND_HANDLER(avrf_flash_bank_command)
 207 {
 208         struct avrf_flash_bank *avrf_info;
 209
 210         if (CMD_ARGC < 6)
 211                 return ERROR_COMMAND_SYNTAX_ERROR;
 212
 213         avrf_info = malloc(sizeof(struct avrf_flash_bank));
 214         bank->driver_priv = avrf_info;
 215
 216         avrf_info->probed = false;
 217
 218         return ERROR_OK;
 219 }
 220
 221 static int avrf_erase(struct flash_bank *bank, int first, int last)
 222 {
 223         struct target *target = bank->target;
 224         struct avr_common *avr = target->arch_info;
 225         int status;
 226
 227         LOG_DEBUG("%s", __func__);
 228
 229         if (target->state != TARGET_HALTED) {
 230                 LOG_ERROR("Target not halted");
 231                 return ERROR_TARGET_NOT_HALTED;
 232         }
 233
 234         status = avr_jtagprg_enterprogmode(avr);
 235         if (status != ERROR_OK)
 236                 return status;
 237
 238         status = avr_jtagprg_chiperase(avr);
 239         if (status != ERROR_OK)
 240                 return status;
 241
 242         return avr_jtagprg_leaveprogmode(avr);
 243 }
 244
 245 static int avrf_write(struct flash_bank *bank, const uint8_t *buffer, uint32_t offset, uint32_t count)
 246 {
 247         struct target *target = bank->target;
 248         struct avr_common *avr = target->arch_info;
 249         uint32_t cur_size, cur_buffer_size, page_size;
 250         bool ext_addressing;
 251
 252         if (bank->target->state != TARGET_HALTED) {
 253                 LOG_ERROR("Target not halted");
 254                 return ERROR_TARGET_NOT_HALTED;
 255         }
 256
 257         page_size = bank->sectors[0].size;
 258         if ((offset % page_size) != 0) {
 259                 LOG_WARNING("offset 0x%" PRIx32 " breaks required %" PRIu32 "-byte alignment",
 260                         offset,
 261                         page_size);
 262                 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
 263         }
 264
 265         LOG_DEBUG("offset is 0x%08" PRIx32 "", offset);
 266         LOG_DEBUG("count is %" PRId32 "", count);
 267
 268         if (ERROR_OK != avr_jtagprg_enterprogmode(avr))
 269                 return ERROR_FAIL;
 270
 271         if (bank->size > 0x20000)
 272                 ext_addressing = true;
 273         else
 274                 ext_addressing = false;
 275
 276         cur_size = 0;
 277         while (count > 0) {
 278                 if (count > page_size)
 279                         cur_buffer_size = page_size;
 280                 else
 281                         cur_buffer_size = count;
 282                 avr_jtagprg_writeflashpage(avr,
 283                         ext_addressing,
 284                         buffer + cur_size,
 285                         cur_buffer_size,
 286                         offset + cur_size,
 287                         page_size);
 288                 count -= cur_buffer_size;
 289                 cur_size += cur_buffer_size;
 290
 291                 keep_alive();
 292         }
 293
 294         return avr_jtagprg_leaveprogmode(avr);
 295 }
 296
 297 #define EXTRACT_MFG(X)  (((X) & 0xffe) >> 1)
 298 #define EXTRACT_PART(X) (((X) & 0xffff000) >> 12)
 299 #define EXTRACT_VER(X)  (((X) & 0xf0000000) >> 28)
 300
 301 static int avrf_probe(struct flash_bank *bank)
 302 {
 303         struct target *target = bank->target;
 304         struct avrf_flash_bank *avrf_info = bank->driver_priv;
 305         struct avr_common *avr = target->arch_info;
 306         const struct avrf_type *avr_info = NULL;
 307         uint32_t device_id;
 308
 309         if (bank->target->state != TARGET_HALTED) {
 310                 LOG_ERROR("Target not halted");
 311                 return ERROR_TARGET_NOT_HALTED;
 312         }
 313
 314         avrf_info->probed = false;
 315
 316         avr_jtag_read_jtagid(avr, &device_id);
 317         if (ERROR_OK != mcu_execute_queue())
 318                 return ERROR_FAIL;
 319
 320         LOG_INFO("device id = 0x%08" PRIx32 "", device_id);
 321         if (EXTRACT_MFG(device_id) != 0x1F)
 322                 LOG_ERROR("0x%" PRIx32 " is invalid Manufacturer for avr, 0x%X is expected",
 323                         EXTRACT_MFG(device_id),
 324                         0x1F);
 325
 326         for (size_t i = 0; i < ARRAY_SIZE(avft_chips_info); i++) {
 327                 if (avft_chips_info[i].chip_id == EXTRACT_PART(device_id)) {
 328                         avr_info = &avft_chips_info[i];
 329                         LOG_INFO("target device is %s", avr_info->name);
 330                         break;
 331                 }
 332         }
 333
 334         if (avr_info != NULL) {
 335                 if (bank->sectors) {
 336                         free(bank->sectors);
 337                         bank->sectors = NULL;
 338                 }
 339
 340                 /* chip found */
 341                 bank->base = 0x00000000;
 342                 bank->size = (avr_info->flash_page_size * avr_info->flash_page_num);
 343                 bank->num_sectors = avr_info->flash_page_num;
 344                 bank->sectors = malloc(sizeof(struct flash_sector) * avr_info->flash_page_num);
 345
 346                 for (int i = 0; i < avr_info->flash_page_num; i++) {
 347                         bank->sectors[i].offset = i * avr_info->flash_page_size;
 348                         bank->sectors[i].size = avr_info->flash_page_size;
 349                         bank->sectors[i].is_erased = -1;
 350                         bank->sectors[i].is_protected = -1;
 351                 }
 352
 353                 avrf_info->probed = true;
 354                 return ERROR_OK;
 355         } else {
 356                 /* chip not supported */
 357                 LOG_ERROR("0x%" PRIx32 " is not support for avr", EXTRACT_PART(device_id));
 358
 359                 avrf_info->probed = true;
 360                 return ERROR_FAIL;
 361         }
 362 }
 363
 364 static int avrf_auto_probe(struct flash_bank *bank)
 365 {
 366         struct avrf_flash_bank *avrf_info = bank->driver_priv;
 367         if (avrf_info->probed)
 368                 return ERROR_OK;
 369         return avrf_probe(bank);
 370 }
 371
 372 static int avrf_info(struct flash_bank *bank, char *buf, int buf_size)
 373 {
 374         struct target *target = bank->target;
 375         struct avr_common *avr = target->arch_info;
 376         const struct avrf_type *avr_info = NULL;
 377         uint32_t device_id;
 378
 379         if (bank->target->state != TARGET_HALTED) {
 380                 LOG_ERROR("Target not halted");
 381                 return ERROR_TARGET_NOT_HALTED;
 382         }
 383
 384         avr_jtag_read_jtagid(avr, &device_id);
 385         if (ERROR_OK != mcu_execute_queue())
 386                 return ERROR_FAIL;
 387
 388         LOG_INFO("device id = 0x%08" PRIx32 "", device_id);
 389         if (EXTRACT_MFG(device_id) != 0x1F)
 390                 LOG_ERROR("0x%" PRIx32 " is invalid Manufacturer for avr, 0x%X is expected",
 391                         EXTRACT_MFG(device_id),
 392                         0x1F);
 393
 394         for (size_t i = 0; i < ARRAY_SIZE(avft_chips_info); i++) {
 395                 if (avft_chips_info[i].chip_id == EXTRACT_PART(device_id)) {
 396                         avr_info = &avft_chips_info[i];
 397                         LOG_INFO("target device is %s", avr_info->name);
 398
 399                         break;
 400                 }
 401         }
 402
 403         if (avr_info != NULL) {
 404                 /* chip found */
 405                 snprintf(buf, buf_size, "%s - Rev: 0x%" PRIx32 "", avr_info->name,
 406                         EXTRACT_VER(device_id));
 407                 return ERROR_OK;
 408         } else {
 409                 /* chip not supported */
 410                 snprintf(buf, buf_size, "Cannot identify target as a avr\n");
 411                 return ERROR_FLASH_OPERATION_FAILED;
 412         }
 413 }
 414
 415 static int avrf_mass_erase(struct flash_bank *bank)
 416 {
 417         struct target *target = bank->target;
 418         struct avr_common *avr = target->arch_info;
 419
 420         if (target->state != TARGET_HALTED) {
 421                 LOG_ERROR("Target not halted");
 422                 return ERROR_TARGET_NOT_HALTED;
 423         }
 424
 425         if ((ERROR_OK != avr_jtagprg_enterprogmode(avr))
 426             || (ERROR_OK != avr_jtagprg_chiperase(avr))
 427             || (ERROR_OK != avr_jtagprg_leaveprogmode(avr)))
 428                 return ERROR_FAIL;
 429
 430         return ERROR_OK;
 431 }
 432
 433 COMMAND_HANDLER(avrf_handle_mass_erase_command)
 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 (int i = 0; i < bank->num_sectors; i++)
 446                         bank->sectors[i].is_erased = 1;
 447
 448                 command_print(CMD, "avr mass erase complete");
 449         } else
 450                 command_print(CMD, "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 const 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         .write = avrf_write,
 483         .read = default_flash_read,
 484         .probe = avrf_probe,
 485         .auto_probe = avrf_auto_probe,
 486         .erase_check = default_flash_blank_check,
 487         .info = avrf_info,
 488         .free_driver_priv = default_flash_free_driver_priv,
 489 };