1 /***************************************************************************
2 * Copyright (C) 2009 by Simon Qian *
3 * SimonQian@SimonQian.com *
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. *
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. *
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 ***************************************************************************/
24 #include <target/avrt.h>
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
41 #define AVR_JTAG_REG_Bypass_Len 1
42 #define AVR_JTAG_REG_DeviceID_Len 32
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
59 struct avrf_flash_bank {
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
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},
80 /* avr program functions */
81 static int avr_jtag_reset(struct avr_common *avr, uint32_t reset)
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);
89 static int avr_jtag_read_jtagid(struct avr_common *avr, uint32_t *id)
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);
97 static int avr_jtagprg_enterprogmode(struct avr_common *avr)
99 avr_jtag_reset(avr, 1);
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);
107 static int avr_jtagprg_leaveprogmode(struct avr_common *avr)
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);
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);
116 avr_jtag_reset(avr, 0);
121 static int avr_jtagprg_chiperase(struct avr_common *avr)
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);
133 avr_jtag_senddat(avr->jtag_info.tap,
136 AVR_JTAG_REG_ProgrammingCommand_Len);
137 if (ERROR_OK != mcu_execute_queue())
139 LOG_DEBUG("poll_value = 0x%04" PRIx32 "", poll_value);
140 } while (!(poll_value & 0x0200));
145 static int avr_jtagprg_writeflashpage(struct avr_common *avr,
146 const bool ext_addressing,
147 const uint8_t *page_buf,
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);
157 /* load extended high byte */
159 avr_jtag_senddat(avr->jtag_info.tap,
161 0x0b00 | ((addr >> 17) & 0xFF),
162 AVR_JTAG_REG_ProgrammingCommand_Len);
164 /* load addr high byte */
165 avr_jtag_senddat(avr->jtag_info.tap,
167 0x0700 | ((addr >> 9) & 0xFF),
168 AVR_JTAG_REG_ProgrammingCommand_Len);
170 /* load addr low byte */
171 avr_jtag_senddat(avr->jtag_info.tap,
173 0x0300 | ((addr >> 1) & 0xFF),
174 AVR_JTAG_REG_ProgrammingCommand_Len);
176 avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_PAGELOAD);
178 for (uint32_t i = 0; i < page_size; i++) {
180 avr_jtag_senddat(avr->jtag_info.tap, NULL, page_buf[i], 8);
182 avr_jtag_senddat(avr->jtag_info.tap, NULL, 0xFF, 8);
185 avr_jtag_sendinstr(avr->jtag_info.tap, NULL, AVR_JTAG_INS_PROG_COMMANDS);
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);
194 avr_jtag_senddat(avr->jtag_info.tap,
197 AVR_JTAG_REG_ProgrammingCommand_Len);
198 if (ERROR_OK != mcu_execute_queue())
200 LOG_DEBUG("poll_value = 0x%04" PRIx32 "", poll_value);
201 } while (!(poll_value & 0x0200));
206 FLASH_BANK_COMMAND_HANDLER(avrf_flash_bank_command)
208 struct avrf_flash_bank *avrf_info;
211 return ERROR_COMMAND_SYNTAX_ERROR;
213 avrf_info = malloc(sizeof(struct avrf_flash_bank));
214 bank->driver_priv = avrf_info;
216 avrf_info->probed = false;
221 static int avrf_erase(struct flash_bank *bank, unsigned int first,
224 struct target *target = bank->target;
225 struct avr_common *avr = target->arch_info;
228 LOG_DEBUG("%s", __func__);
230 if (target->state != TARGET_HALTED) {
231 LOG_ERROR("Target not halted");
232 return ERROR_TARGET_NOT_HALTED;
235 status = avr_jtagprg_enterprogmode(avr);
236 if (status != ERROR_OK)
239 status = avr_jtagprg_chiperase(avr);
240 if (status != ERROR_OK)
243 return avr_jtagprg_leaveprogmode(avr);
246 static int avrf_write(struct flash_bank *bank, const uint8_t *buffer, uint32_t offset, uint32_t count)
248 struct target *target = bank->target;
249 struct avr_common *avr = target->arch_info;
250 uint32_t cur_size, cur_buffer_size, page_size;
253 if (bank->target->state != TARGET_HALTED) {
254 LOG_ERROR("Target not halted");
255 return ERROR_TARGET_NOT_HALTED;
258 page_size = bank->sectors[0].size;
259 if ((offset % page_size) != 0) {
260 LOG_WARNING("offset 0x%" PRIx32 " breaks required %" PRIu32 "-byte alignment",
263 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
266 LOG_DEBUG("offset is 0x%08" PRIx32 "", offset);
267 LOG_DEBUG("count is %" PRId32 "", count);
269 if (ERROR_OK != avr_jtagprg_enterprogmode(avr))
272 if (bank->size > 0x20000)
273 ext_addressing = true;
275 ext_addressing = false;
279 if (count > page_size)
280 cur_buffer_size = page_size;
282 cur_buffer_size = count;
283 avr_jtagprg_writeflashpage(avr,
289 count -= cur_buffer_size;
290 cur_size += cur_buffer_size;
295 return avr_jtagprg_leaveprogmode(avr);
298 #define EXTRACT_MFG(X) (((X) & 0xffe) >> 1)
299 #define EXTRACT_PART(X) (((X) & 0xffff000) >> 12)
300 #define EXTRACT_VER(X) (((X) & 0xf0000000) >> 28)
302 static int avrf_probe(struct flash_bank *bank)
304 struct target *target = bank->target;
305 struct avrf_flash_bank *avrf_info = bank->driver_priv;
306 struct avr_common *avr = target->arch_info;
307 const struct avrf_type *avr_info = NULL;
310 if (bank->target->state != TARGET_HALTED) {
311 LOG_ERROR("Target not halted");
312 return ERROR_TARGET_NOT_HALTED;
315 avrf_info->probed = false;
317 avr_jtag_read_jtagid(avr, &device_id);
318 if (ERROR_OK != mcu_execute_queue())
321 LOG_INFO("device id = 0x%08" PRIx32 "", device_id);
322 if (EXTRACT_MFG(device_id) != 0x1F)
323 LOG_ERROR("0x%" PRIx32 " is invalid Manufacturer for avr, 0x%X is expected",
324 EXTRACT_MFG(device_id),
327 for (size_t i = 0; i < ARRAY_SIZE(avft_chips_info); i++) {
328 if (avft_chips_info[i].chip_id == EXTRACT_PART(device_id)) {
329 avr_info = &avft_chips_info[i];
330 LOG_INFO("target device is %s", avr_info->name);
335 if (avr_info != NULL) {
338 bank->sectors = NULL;
342 bank->base = 0x00000000;
343 bank->size = (avr_info->flash_page_size * avr_info->flash_page_num);
344 bank->num_sectors = avr_info->flash_page_num;
345 bank->sectors = malloc(sizeof(struct flash_sector) * avr_info->flash_page_num);
347 for (int i = 0; i < avr_info->flash_page_num; i++) {
348 bank->sectors[i].offset = i * avr_info->flash_page_size;
349 bank->sectors[i].size = avr_info->flash_page_size;
350 bank->sectors[i].is_erased = -1;
351 bank->sectors[i].is_protected = -1;
354 avrf_info->probed = true;
357 /* chip not supported */
358 LOG_ERROR("0x%" PRIx32 " is not support for avr", EXTRACT_PART(device_id));
360 avrf_info->probed = true;
365 static int avrf_auto_probe(struct flash_bank *bank)
367 struct avrf_flash_bank *avrf_info = bank->driver_priv;
368 if (avrf_info->probed)
370 return avrf_probe(bank);
373 static int avrf_info(struct flash_bank *bank, char *buf, int buf_size)
375 struct target *target = bank->target;
376 struct avr_common *avr = target->arch_info;
377 const struct avrf_type *avr_info = NULL;
380 if (bank->target->state != TARGET_HALTED) {
381 LOG_ERROR("Target not halted");
382 return ERROR_TARGET_NOT_HALTED;
385 avr_jtag_read_jtagid(avr, &device_id);
386 if (ERROR_OK != mcu_execute_queue())
389 LOG_INFO("device id = 0x%08" PRIx32 "", device_id);
390 if (EXTRACT_MFG(device_id) != 0x1F)
391 LOG_ERROR("0x%" PRIx32 " is invalid Manufacturer for avr, 0x%X is expected",
392 EXTRACT_MFG(device_id),
395 for (size_t i = 0; i < ARRAY_SIZE(avft_chips_info); i++) {
396 if (avft_chips_info[i].chip_id == EXTRACT_PART(device_id)) {
397 avr_info = &avft_chips_info[i];
398 LOG_INFO("target device is %s", avr_info->name);
404 if (avr_info != NULL) {
406 snprintf(buf, buf_size, "%s - Rev: 0x%" PRIx32 "", avr_info->name,
407 EXTRACT_VER(device_id));
410 /* chip not supported */
411 snprintf(buf, buf_size, "Cannot identify target as a avr\n");
412 return ERROR_FLASH_OPERATION_FAILED;
416 static int avrf_mass_erase(struct flash_bank *bank)
418 struct target *target = bank->target;
419 struct avr_common *avr = target->arch_info;
421 if (target->state != TARGET_HALTED) {
422 LOG_ERROR("Target not halted");
423 return ERROR_TARGET_NOT_HALTED;
426 if ((ERROR_OK != avr_jtagprg_enterprogmode(avr))
427 || (ERROR_OK != avr_jtagprg_chiperase(avr))
428 || (ERROR_OK != avr_jtagprg_leaveprogmode(avr)))
434 COMMAND_HANDLER(avrf_handle_mass_erase_command)
437 return ERROR_COMMAND_SYNTAX_ERROR;
439 struct flash_bank *bank;
440 int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
441 if (ERROR_OK != retval)
444 if (avrf_mass_erase(bank) == ERROR_OK) {
445 /* set all sectors as erased */
446 for (unsigned int i = 0; i < bank->num_sectors; i++)
447 bank->sectors[i].is_erased = 1;
449 command_print(CMD, "avr mass erase complete");
451 command_print(CMD, "avr mass erase failed");
453 LOG_DEBUG("%s", __func__);
457 static const struct command_registration avrf_exec_command_handlers[] = {
459 .name = "mass_erase",
461 .handler = avrf_handle_mass_erase_command,
462 .mode = COMMAND_EXEC,
463 .help = "erase entire device",
465 COMMAND_REGISTRATION_DONE
467 static const struct command_registration avrf_command_handlers[] = {
471 .help = "AVR flash command group",
473 .chain = avrf_exec_command_handlers,
475 COMMAND_REGISTRATION_DONE
478 const struct flash_driver avr_flash = {
480 .commands = avrf_command_handlers,
481 .flash_bank_command = avrf_flash_bank_command,
484 .read = default_flash_read,
486 .auto_probe = avrf_auto_probe,
487 .erase_check = default_flash_blank_check,
489 .free_driver_priv = default_flash_free_driver_priv,