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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  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include "imp.h"
  25 #include <target/avrt.h>
  26
  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 {
  54         char name[15];
  55         uint16_t chip_id;
  56         int flash_page_size;
  57         int flash_page_num;
  58         int eeprom_page_size;
  59         int eeprom_page_num;
  60 };
  61
  62 struct avrf_flash_bank
  63 {
  64         int ppage_size;
  65         int probed;
  66 };
  67
  68 static struct avrf_type avft_chips_info[] =
  69 {
  70 /*      name, chip_id,  flash_page_size, flash_page_num,
  71  *                      eeprom_page_size, eeprom_page_num
  72  */
  73         {"atmega128",   0x9702, 256, 512, 8, 512},
  74         {"at90can128",  0x9781, 256, 512, 8, 512},
  75 };
  76
  77 /* avr program functions */
  78 static int avr_jtag_reset(struct avr_common *avr, uint32_t reset)
  79 {
  80         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_AVR_RESET);
  81         avr_jtag_senddat(avr->jtag_info.tap, NULL, reset ,AVR_JTAG_REG_Reset_Len);
  82
  83         return ERROR_OK;
  84 }
  85
  86 static int avr_jtag_read_jtagid(struct avr_common *avr, uint32_t *id)
  87 {
  88         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_IDCODE);
  89         avr_jtag_senddat(avr->jtag_info.tap, id, 0, AVR_JTAG_REG_JTAGID_Len);
  90
  91         return ERROR_OK;
  92 }
  93
  94 static int avr_jtagprg_enterprogmode(struct avr_common *avr)
  95 {
  96         avr_jtag_reset(avr, 1);
  97
  98         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_ENABLE);
  99         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0xA370, AVR_JTAG_REG_ProgrammingEnable_Len);
 100
 101         return ERROR_OK;
 102 }
 103
 104 static int avr_jtagprg_leaveprogmode(struct avr_common *avr)
 105 {
 106         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_COMMANDS);
 107         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x2300, AVR_JTAG_REG_ProgrammingCommand_Len);
 108         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3300, AVR_JTAG_REG_ProgrammingCommand_Len);
 109
 110         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_ENABLE);
 111         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0, AVR_JTAG_REG_ProgrammingEnable_Len);
 112
 113         avr_jtag_reset(avr, 0);
 114
 115         return ERROR_OK;
 116 }
 117
 118 static int avr_jtagprg_chiperase(struct avr_common *avr)
 119 {
 120         uint32_t poll_value;
 121
 122         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_COMMANDS);
 123         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x2380, AVR_JTAG_REG_ProgrammingCommand_Len);
 124         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3180, AVR_JTAG_REG_ProgrammingCommand_Len);
 125         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3380, AVR_JTAG_REG_ProgrammingCommand_Len);
 126         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3380, AVR_JTAG_REG_ProgrammingCommand_Len);
 127
 128         do {
 129                 poll_value = 0;
 130                 avr_jtag_senddat(avr->jtag_info.tap, &poll_value, 0x3380, AVR_JTAG_REG_ProgrammingCommand_Len);
 131                 if (ERROR_OK != mcu_execute_queue())
 132                 {
 133                         return ERROR_FAIL;
 134                 }
 135                 LOG_DEBUG("poll_value = 0x%04" PRIx32 "", poll_value);
 136         } while (!(poll_value & 0x0200));
 137
 138         return ERROR_OK;
 139 }
 140
 141 static int avr_jtagprg_writeflashpage(struct avr_common *avr, uint8_t *page_buf, uint32_t buf_size, uint32_t addr, uint32_t page_size)
 142 {
 143         uint32_t i, poll_value;
 144
 145         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_COMMANDS);
 146         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x2310, AVR_JTAG_REG_ProgrammingCommand_Len);
 147
 148         // load addr high byte
 149         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x0700 | ((addr >> 9) & 0xFF), AVR_JTAG_REG_ProgrammingCommand_Len);
 150
 151         // load addr low byte
 152         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x0300 | ((addr >> 1) & 0xFF), AVR_JTAG_REG_ProgrammingCommand_Len);
 153
 154         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_PAGELOAD);
 155
 156         for (i = 0; i < page_size; i++)
 157         {
 158                 if (i < buf_size)
 159                 {
 160                         avr_jtag_senddat(avr->jtag_info.tap, NULL, page_buf[i], 8);
 161                 }
 162                 else
 163                 {
 164                         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0xFF, 8);
 165                 }
 166         }
 167
 168         avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_COMMANDS);
 169
 170         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3700, AVR_JTAG_REG_ProgrammingCommand_Len);
 171         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3500, AVR_JTAG_REG_ProgrammingCommand_Len);
 172         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3700, AVR_JTAG_REG_ProgrammingCommand_Len);
 173         avr_jtag_senddat(avr->jtag_info.tap, NULL, 0x3700, AVR_JTAG_REG_ProgrammingCommand_Len);
 174
 175         do {
 176                 poll_value = 0;
 177                 avr_jtag_senddat(avr->jtag_info.tap, &poll_value, 0x3700, AVR_JTAG_REG_ProgrammingCommand_Len);
 178                 if (ERROR_OK != mcu_execute_queue())
 179                 {
 180                         return ERROR_FAIL;
 181                 }
 182                 LOG_DEBUG("poll_value = 0x%04" PRIx32 "", poll_value);
 183         } while (!(poll_value & 0x0200));
 184
 185         return ERROR_OK;
 186 }
 187
 188 FLASH_BANK_COMMAND_HANDLER(avrf_flash_bank_command)
 189 {
 190         struct avrf_flash_bank *avrf_info;
 191
 192         if (CMD_ARGC < 6)
 193         {
 194                 return ERROR_COMMAND_SYNTAX_ERROR;
 195         }
 196
 197         avrf_info = malloc(sizeof(struct avrf_flash_bank));
 198         bank->driver_priv = avrf_info;
 199
 200         avrf_info->probed = 0;
 201
 202         return ERROR_OK;
 203 }
 204
 205 static int avrf_erase(struct flash_bank *bank, int first, int last)
 206 {
 207         struct target *target = bank->target;
 208         struct avr_common *avr = target->arch_info;
 209         int status;
 210
 211         LOG_DEBUG("%s", __FUNCTION__);
 212
 213         if (target->state != TARGET_HALTED)
 214         {
 215                 LOG_ERROR("Target not halted");
 216                 return ERROR_TARGET_NOT_HALTED;
 217         }
 218
 219         status = avr_jtagprg_enterprogmode(avr);
 220         if (status != ERROR_OK)
 221                 return status;
 222
 223         status = avr_jtagprg_chiperase(avr);
 224         if (status != ERROR_OK)
 225                 return status;
 226
 227         return avr_jtagprg_leaveprogmode(avr);
 228 }
 229
 230 static int avrf_protect(struct flash_bank *bank, int set, int first, int last)
 231 {
 232         LOG_INFO("%s", __FUNCTION__);
 233         return ERROR_OK;
 234 }
 235
 236 static int avrf_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
 237 {
 238         struct target *target = bank->target;
 239         struct avr_common *avr = target->arch_info;
 240         uint32_t cur_size, cur_buffer_size, page_size;
 241
 242         if (bank->target->state != TARGET_HALTED)
 243         {
 244                 LOG_ERROR("Target not halted");
 245                 return ERROR_TARGET_NOT_HALTED;
 246         }
 247
 248         page_size = bank->sectors[0].size;
 249         if ((offset % page_size) != 0)
 250         {
 251                 LOG_WARNING("offset 0x%" PRIx32 " breaks required %" PRIu32 "-byte alignment", offset, page_size);
 252                 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
 253         }
 254
 255         LOG_DEBUG("offset is 0x%08" PRIx32 "", offset);
 256         LOG_DEBUG("count is %" PRId32 "", count);
 257
 258         if (ERROR_OK != avr_jtagprg_enterprogmode(avr))
 259         {
 260                 return ERROR_FAIL;
 261         }
 262
 263         cur_size = 0;
 264         while (count > 0)
 265         {
 266                 if (count > page_size)
 267                 {
 268                         cur_buffer_size = page_size;
 269                 }
 270                 else
 271                 {
 272                         cur_buffer_size = count;
 273                 }
 274                 avr_jtagprg_writeflashpage(avr, buffer + cur_size, cur_buffer_size, offset + cur_size, page_size);
 275                 count -= cur_buffer_size;
 276                 cur_size += cur_buffer_size;
 277
 278                 keep_alive();
 279         }
 280
 281         return avr_jtagprg_leaveprogmode(avr);
 282 }
 283
 284 #define EXTRACT_MFG(X)  (((X) & 0xffe) >> 1)
 285 #define EXTRACT_PART(X) (((X) & 0xffff000) >> 12)
 286 #define EXTRACT_VER(X)  (((X) & 0xf0000000) >> 28)
 287 static int avrf_probe(struct flash_bank *bank)
 288 {
 289         struct target *target = bank->target;
 290         struct avrf_flash_bank *avrf_info = bank->driver_priv;
 291         struct avr_common *avr = target->arch_info;
 292         struct avrf_type *avr_info = NULL;
 293         int i;
 294         uint32_t device_id;
 295
 296         if (bank->target->state != TARGET_HALTED)
 297         {
 298                 LOG_ERROR("Target not halted");
 299                 return ERROR_TARGET_NOT_HALTED;
 300         }
 301
 302         avrf_info->probed = 0;
 303
 304         avr_jtag_read_jtagid(avr, &device_id);
 305         if (ERROR_OK != mcu_execute_queue())
 306         {
 307                 return ERROR_FAIL;
 308         }
 309
 310         LOG_INFO("device id = 0x%08" PRIx32 "", device_id);
 311         if (EXTRACT_MFG(device_id) != 0x1F)
 312         {
 313                 LOG_ERROR("0x%" PRIx32 " is invalid Manufacturer for avr, 0x%X is expected", EXTRACT_MFG(device_id), 0x1F);
 314         }
 315
 316         for (i = 0; i < (int)ARRAY_SIZE(avft_chips_info); i++)
 317         {
 318                 if (avft_chips_info[i].chip_id == EXTRACT_PART(device_id))
 319                 {
 320                         avr_info = &avft_chips_info[i];
 321                         LOG_INFO("target device is %s", avr_info->name);
 322                         break;
 323                 }
 324         }
 325
 326         if (avr_info != NULL)
 327         {
 328                 if (bank->sectors)
 329                 {
 330                         free(bank->sectors);
 331                         bank->sectors = NULL;
 332                 }
 333
 334                 // chip found
 335                 bank->base = 0x00000000;
 336                 bank->size = (avr_info->flash_page_size * avr_info->flash_page_num);
 337                 bank->num_sectors = avr_info->flash_page_num;
 338                 bank->sectors = malloc(sizeof(struct flash_sector) * avr_info->flash_page_num);
 339
 340                 for (i = 0; i < avr_info->flash_page_num; i++)
 341                 {
 342                         bank->sectors[i].offset = i * avr_info->flash_page_size;
 343                         bank->sectors[i].size = avr_info->flash_page_size;
 344                         bank->sectors[i].is_erased = -1;
 345                         bank->sectors[i].is_protected = 1;
 346                 }
 347
 348                 avrf_info->probed = 1;
 349                 return ERROR_OK;
 350         }
 351         else
 352         {
 353                 // chip not supported
 354                 LOG_ERROR("0x%" PRIx32 " is not support for avr", EXTRACT_PART(device_id));
 355
 356                 avrf_info->probed = 1;
 357                 return ERROR_FAIL;
 358         }
 359 }
 360
 361 static int avrf_auto_probe(struct flash_bank *bank)
 362 {
 363         struct avrf_flash_bank *avrf_info = bank->driver_priv;
 364         if (avrf_info->probed)
 365                 return ERROR_OK;
 366         return avrf_probe(bank);
 367 }
 368
 369 static int avrf_protect_check(struct flash_bank *bank)
 370 {
 371         LOG_INFO("%s", __FUNCTION__);
 372         return ERROR_OK;
 373 }
 374
 375 static int avrf_info(struct flash_bank *bank, char *buf, int buf_size)
 376 {
 377         struct target *target = bank->target;
 378         struct avr_common *avr = target->arch_info;
 379         struct avrf_type *avr_info = NULL;
 380         int i;
 381         uint32_t device_id;
 382
 383         if (bank->target->state != TARGET_HALTED)
 384         {
 385                 LOG_ERROR("Target not halted");
 386                 return ERROR_TARGET_NOT_HALTED;
 387         }
 388
 389         avr_jtag_read_jtagid(avr, &device_id);
 390         if (ERROR_OK != mcu_execute_queue())
 391         {
 392                 return ERROR_FAIL;
 393         }
 394
 395         LOG_INFO("device id = 0x%08" PRIx32 "", device_id);
 396         if (EXTRACT_MFG(device_id) != 0x1F)
 397         {
 398                 LOG_ERROR("0x%" PRIx32 " is invalid Manufacturer for avr, 0x%X is expected", EXTRACT_MFG(device_id), 0x1F);
 399         }
 400
 401         for (i = 0; i < (int)ARRAY_SIZE(avft_chips_info); i++)
 402         {
 403                 if (avft_chips_info[i].chip_id == EXTRACT_PART(device_id))
 404                 {
 405                         avr_info = &avft_chips_info[i];
 406                         LOG_INFO("target device is %s", avr_info->name);
 407
 408                         break;
 409                 }
 410         }
 411
 412         if (avr_info != NULL)
 413         {
 414                 // chip found
 415                 snprintf(buf, buf_size, "%s - Rev: 0x%" PRIx32 "", avr_info->name, EXTRACT_VER(device_id));
 416                 return ERROR_OK;
 417         }
 418         else
 419         {
 420                 // chip not supported
 421                 snprintf(buf, buf_size, "Cannot identify target as a avr\n");
 422                 return ERROR_FLASH_OPERATION_FAILED;
 423         }
 424 }
 425
 426 static int avrf_mass_erase(struct flash_bank *bank)
 427 {
 428         struct target *target = bank->target;
 429         struct avr_common *avr = target->arch_info;
 430
 431         if (target->state != TARGET_HALTED)
 432         {
 433                 LOG_ERROR("Target not halted");
 434                 return ERROR_TARGET_NOT_HALTED;
 435         }
 436
 437         if ((ERROR_OK != avr_jtagprg_enterprogmode(avr))
 438                 || (ERROR_OK != avr_jtagprg_chiperase(avr))
 439                 || (ERROR_OK != avr_jtagprg_leaveprogmode(avr)))
 440         {
 441                 return ERROR_FAIL;
 442         }
 443
 444         return ERROR_OK;
 445 }
 446
 447 COMMAND_HANDLER(avrf_handle_mass_erase_command)
 448 {
 449         int i;
 450
 451         if (CMD_ARGC < 1)
 452         {
 453                 return ERROR_COMMAND_SYNTAX_ERROR;
 454         }
 455
 456         struct flash_bank *bank;
 457         int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
 458         if (ERROR_OK != retval)
 459                 return retval;
 460
 461         if (avrf_mass_erase(bank) == ERROR_OK)
 462         {
 463                 /* set all sectors as erased */
 464                 for (i = 0; i < bank->num_sectors; i++)
 465                 {
 466                         bank->sectors[i].is_erased = 1;
 467                 }
 468
 469                 command_print(CMD_CTX, "avr mass erase complete");
 470         }
 471         else
 472         {
 473                 command_print(CMD_CTX, "avr mass erase failed");
 474         }
 475
 476         LOG_DEBUG("%s", __FUNCTION__);
 477         return ERROR_OK;
 478 }
 479
 480 static const struct command_registration avrf_exec_command_handlers[] = {
 481         {
 482                 .name = "mass_erase",
 483                 .usage = "<bank>",
 484                 .handler = avrf_handle_mass_erase_command,
 485                 .mode = COMMAND_EXEC,
 486                 .help = "erase entire device",
 487         },
 488         COMMAND_REGISTRATION_DONE
 489 };
 490 static const struct command_registration avrf_command_handlers[] = {
 491         {
 492                 .name = "avrf",
 493                 .mode = COMMAND_ANY,
 494                 .help = "AVR flash command group",
 495                 .chain = avrf_exec_command_handlers,
 496         },
 497         COMMAND_REGISTRATION_DONE
 498 };
 499
 500 struct flash_driver avr_flash = {
 501         .name = "avr",
 502         .commands = avrf_command_handlers,
 503         .flash_bank_command = avrf_flash_bank_command,
 504         .erase = avrf_erase,
 505         .protect = avrf_protect,
 506         .write = avrf_write,
 507         .read = default_flash_read,
 508         .probe = avrf_probe,
 509         .auto_probe = avrf_auto_probe,
 510         .erase_check = default_flash_mem_blank_check,
 511         .protect_check = avrf_protect_check,
 512         .info = avrf_info,
 513 };