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flash/nor: update support for TI MSP432 devices
[openocd.git] / src / flash / nor / msp432.c
1 /***************************************************************************
2 * Copyright (C) 2018 by Texas Instruments, Inc. *
3 * *
4 * This program is free software; you can redistribute it and/or modify *
5 * it under the terms of the GNU General Public License as published by *
6 * the Free Software Foundation; either version 2 of the License, or *
7 * (at your option) any later version. *
8 * *
9 * This program is distributed in the hope that it will be useful, *
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
12 * GNU General Public License for more details. *
13 * *
14 * You should have received a copy of the GNU General Public License *
15 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
16 ***************************************************************************/
17
18 #ifdef HAVE_CONFIG_H
19 #include "config.h"
20 #endif
21
22 #include "imp.h"
23 #include "msp432.h"
24 #include <helper/binarybuffer.h>
25 #include <helper/time_support.h>
26 #include <target/algorithm.h>
27 #include <target/armv7m.h>
28 #include <target/image.h>
29
30 /* MSP432P4 hardware registers */
31 #define P4_FLASH_MAIN_SIZE_REG 0xE0043020
32 #define P4_FLASH_INFO_SIZE_REG 0xE0043024
33 #define P4_DEVICE_ID_REG 0x0020100C
34 #define P4_HARDWARE_REV_REG 0x00201010
35
36 /* MSP432E4 hardware registers */
37 #define E4_DID0_REG 0x400FE000
38 #define E4_DID1_REG 0x400FE004
39
40 #define FLASH_TIMEOUT 8000
41
42 #define SUPPORT_MESSAGE \
43 "Your pre-production MSP432P401x silicon is not fully supported\n" \
44 "You can find more information at www.ti.com/product/MSP432P401R"
45
46 struct msp432_bank {
47 uint32_t device_id;
48 uint32_t hardware_rev;
49 int family_type;
50 int device_type;
51 uint32_t sector_length;
52 bool probed_main;
53 bool probed_info;
54 bool unlock_bsl;
55 struct working_area *working_area;
56 struct armv7m_algorithm armv7m_info;
57 };
58
59 static int msp432_auto_probe(struct flash_bank *bank);
60
61 static int msp432_device_type(uint32_t family_type, uint32_t device_id,
62 uint32_t hardware_rev)
63 {
64 int device_type = MSP432_NO_TYPE;
65
66 if (MSP432E4 == family_type) {
67 /* MSP432E4 device family */
68
69 if (device_id == 0x180C0002) {
70 if (hardware_rev == 0x102DC06E) {
71 /* The 01Y variant */
72 device_type = MSP432E401Y;
73 } else if (hardware_rev == 0x1032E076) {
74 /* The 11Y variant */
75 device_type = MSP432E411Y;
76 } else {
77 /* Reasonable guess that this is a new variant */
78 device_type = MSP432E4X_GUESS;
79 }
80 } else {
81 /* Wild guess that this is an MSP432E4 */
82 device_type = MSP432E4X_GUESS;
83 }
84 } else {
85 /* MSP432P4 device family */
86
87 /* Examine the device ID and hardware revision to get the device type */
88 switch (device_id) {
89 case 0xA000:
90 case 0xA001:
91 case 0xA002:
92 case 0xA003:
93 case 0xA004:
94 case 0xA005:
95 /* Device is definitely MSP432P401x, check hardware revision */
96 if (hardware_rev == 0x41 || hardware_rev == 0x42) {
97 /* Rev A or B of the silicon has been deprecated */
98 device_type = MSP432P401X_DEPR;
99 } else if (hardware_rev >= 0x43 && hardware_rev <= 0x49) {
100 /* Current and future revisions of the MSP432P401x device */
101 device_type = MSP432P401X;
102 } else {
103 /* Unknown or unanticipated hardware revision */
104 device_type = MSP432P401X_GUESS;
105 }
106 break;
107 case 0xA010:
108 case 0xA012:
109 case 0xA016:
110 case 0xA019:
111 case 0xA01F:
112 case 0xA020:
113 case 0xA022:
114 case 0xA026:
115 case 0xA029:
116 case 0xA02F:
117 /* Device is definitely MSP432P411x, check hardware revision */
118 if (hardware_rev >= 0x41 && hardware_rev <= 0x49) {
119 /* Current and future revisions of the MSP432P411x device */
120 device_type = MSP432P411X;
121 } else {
122 /* Unknown or unanticipated hardware revision */
123 device_type = MSP432P411X_GUESS;
124 }
125 break;
126 case 0xFFFF:
127 /* Device is very early silicon that has been deprecated */
128 device_type = MSP432P401X_DEPR;
129 break;
130 default:
131 if (device_id < 0xA010) {
132 /* Wild guess that this is an MSP432P401x */
133 device_type = MSP432P401X_GUESS;
134 } else {
135 /* Reasonable guess that this is a new variant */
136 device_type = MSP432P411X_GUESS;
137 }
138 break;
139 }
140 }
141
142 return device_type;
143 }
144
145 static const char *msp432_return_text(uint32_t return_code)
146 {
147 switch (return_code) {
148 case FLASH_BUSY:
149 return "FLASH_BUSY";
150 case FLASH_SUCCESS:
151 return "FLASH_SUCCESS";
152 case FLASH_ERROR:
153 return "FLASH_ERROR";
154 case FLASH_TIMEOUT_ERROR:
155 return "FLASH_TIMEOUT_ERROR";
156 case FLASH_VERIFY_ERROR:
157 return "FLASH_VERIFY_WRONG";
158 case FLASH_WRONG_COMMAND:
159 return "FLASH_WRONG_COMMAND";
160 case FLASH_POWER_ERROR:
161 return "FLASH_POWER_ERROR";
162 default:
163 return "UNDEFINED_RETURN_CODE";
164 }
165 }
166
167 static void msp432_init_params(struct msp432_algo_params *algo_params)
168 {
169 buf_set_u32(algo_params->flash_command, 0, 32, FLASH_NO_COMMAND);
170 buf_set_u32(algo_params->return_code, 0, 32, 0);
171 buf_set_u32(algo_params->_reserved0, 0, 32, 0);
172 buf_set_u32(algo_params->address, 0, 32, 0);
173 buf_set_u32(algo_params->length, 0, 32, 0);
174 buf_set_u32(algo_params->buffer1_status, 0, 32, BUFFER_INACTIVE);
175 buf_set_u32(algo_params->buffer2_status, 0, 32, BUFFER_INACTIVE);
176 buf_set_u32(algo_params->erase_param, 0, 32, FLASH_ERASE_MAIN);
177 buf_set_u32(algo_params->unlock_bsl, 0, 32, FLASH_LOCK_BSL);
178 }
179
180 static int msp432_exec_cmd(struct target *target, struct msp432_algo_params
181 *algo_params, uint32_t command)
182 {
183 int retval;
184
185 /* Make sure the given params do not include the command */
186 buf_set_u32(algo_params->flash_command, 0, 32, FLASH_NO_COMMAND);
187 buf_set_u32(algo_params->return_code, 0, 32, 0);
188 buf_set_u32(algo_params->buffer1_status, 0, 32, BUFFER_INACTIVE);
189 buf_set_u32(algo_params->buffer2_status, 0, 32, BUFFER_INACTIVE);
190
191 /* Write out parameters to target memory */
192 retval = target_write_buffer(target, ALGO_PARAMS_BASE_ADDR,
193 sizeof(struct msp432_algo_params), (uint8_t *)algo_params);
194 if (ERROR_OK != retval)
195 return retval;
196
197 /* Write out command to target memory */
198 retval = target_write_u32(target, ALGO_FLASH_COMMAND_ADDR, command);
199
200 return retval;
201 }
202
203 static int msp432_wait_return_code(struct target *target)
204 {
205 uint32_t return_code = 0;
206 long long start_ms;
207 long long elapsed_ms;
208
209 int retval = ERROR_OK;
210
211 start_ms = timeval_ms();
212 while ((0 == return_code) || (FLASH_BUSY == return_code)) {
213 retval = target_read_u32(target, ALGO_RETURN_CODE_ADDR, &return_code);
214 if (ERROR_OK != retval)
215 return retval;
216
217 elapsed_ms = timeval_ms() - start_ms;
218 if (elapsed_ms > 500)
219 keep_alive();
220 if (elapsed_ms > FLASH_TIMEOUT)
221 break;
222 };
223
224 if (FLASH_SUCCESS != return_code) {
225 LOG_ERROR("msp432: Flash operation failed: %s",
226 msp432_return_text(return_code));
227 return ERROR_FAIL;
228 }
229
230 return ERROR_OK;
231 }
232
233 static int msp432_wait_inactive(struct target *target, uint32_t buffer)
234 {
235 uint32_t status_code = BUFFER_ACTIVE;
236 uint32_t status_addr;
237 long long start_ms;
238 long long elapsed_ms;
239
240 int retval;
241
242 switch (buffer) {
243 case 1: /* Buffer 1 */
244 status_addr = ALGO_BUFFER1_STATUS_ADDR;
245 break;
246 case 2: /* Buffer 2 */
247 status_addr = ALGO_BUFFER2_STATUS_ADDR;
248 break;
249 default:
250 return ERROR_FAIL;
251 }
252
253 start_ms = timeval_ms();
254 while (BUFFER_INACTIVE != status_code) {
255 retval = target_read_u32(target, status_addr, &status_code);
256 if (ERROR_OK != retval)
257 return retval;
258
259 elapsed_ms = timeval_ms() - start_ms;
260 if (elapsed_ms > 500)
261 keep_alive();
262 if (elapsed_ms > FLASH_TIMEOUT)
263 break;
264 };
265
266 if (BUFFER_INACTIVE != status_code) {
267 LOG_ERROR(
268 "msp432: Flash operation failed: buffer not written to flash");
269 return ERROR_FAIL;
270 }
271
272 return ERROR_OK;
273 }
274
275 static int msp432_init(struct flash_bank *bank)
276 {
277 struct target *target = bank->target;
278 struct msp432_bank *msp432_bank = bank->driver_priv;
279 struct msp432_algo_params algo_params;
280 struct reg_param reg_params[1];
281
282 const uint8_t *loader_code;
283 uint32_t loader_size;
284 uint32_t algo_entry_addr;
285 int retval;
286
287 /* Make sure we've probed the flash to get the device and size */
288 retval = msp432_auto_probe(bank);
289 if (ERROR_OK != retval)
290 return retval;
291
292 /* Choose appropriate flash helper algorithm */
293 switch (msp432_bank->device_type) {
294 case MSP432P401X:
295 case MSP432P401X_DEPR:
296 case MSP432P401X_GUESS:
297 default:
298 loader_code = msp432p401x_algo;
299 loader_size = sizeof(msp432p401x_algo);
300 algo_entry_addr = P4_ALGO_ENTRY_ADDR;
301 break;
302 case MSP432P411X:
303 case MSP432P411X_GUESS:
304 loader_code = msp432p411x_algo;
305 loader_size = sizeof(msp432p411x_algo);
306 algo_entry_addr = P4_ALGO_ENTRY_ADDR;
307 break;
308 case MSP432E401Y:
309 case MSP432E411Y:
310 case MSP432E4X_GUESS:
311 loader_code = msp432e4x_algo;
312 loader_size = sizeof(msp432e4x_algo);
313 algo_entry_addr = E4_ALGO_ENTRY_ADDR;
314 break;
315 }
316
317 /* Issue warnings if this is a device we may not be able to flash */
318 if (MSP432P401X_GUESS == msp432_bank->device_type ||
319 MSP432P411X_GUESS == msp432_bank->device_type) {
320 /* Explicit device type check failed. Report this. */
321 LOG_WARNING(
322 "msp432: Unrecognized MSP432P4 Device ID and Hardware "
323 "Rev (%04X, %02X)", msp432_bank->device_id,
324 msp432_bank->hardware_rev);
325 } else if (MSP432P401X_DEPR == msp432_bank->device_type) {
326 LOG_WARNING(
327 "msp432: MSP432P401x pre-production device (deprecated "
328 "silicon)\n" SUPPORT_MESSAGE);
329 } else if (MSP432E4X_GUESS == msp432_bank->device_type) {
330 /* Explicit device type check failed. Report this. */
331 LOG_WARNING(
332 "msp432: Unrecognized MSP432E4 DID0 and DID1 values "
333 "(%08X, %08X)", msp432_bank->device_id,
334 msp432_bank->hardware_rev);
335 }
336
337 /* Check for working area to use for flash helper algorithm */
338 if (NULL != msp432_bank->working_area)
339 target_free_working_area(target, msp432_bank->working_area);
340 retval = target_alloc_working_area(target, ALGO_WORKING_SIZE,
341 &msp432_bank->working_area);
342 if (ERROR_OK != retval)
343 return retval;
344
345 /* Confirm the defined working address is the area we need to use */
346 if (ALGO_BASE_ADDR != msp432_bank->working_area->address)
347 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
348
349 /* Write flash helper algorithm into target memory */
350 retval = target_write_buffer(target, ALGO_BASE_ADDR, loader_size,
351 loader_code);
352 if (ERROR_OK != retval)
353 return retval;
354
355 /* Initialize the ARMv7 specific info to run the algorithm */
356 msp432_bank->armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
357 msp432_bank->armv7m_info.core_mode = ARM_MODE_THREAD;
358
359 /* Initialize algorithm parameters to default values */
360 msp432_init_params(&algo_params);
361
362 /* Write out parameters to target memory */
363 retval = target_write_buffer(target, ALGO_PARAMS_BASE_ADDR,
364 sizeof(algo_params), (uint8_t *)&algo_params);
365 if (ERROR_OK != retval)
366 return retval;
367
368 /* Initialize stack pointer for flash helper algorithm */
369 init_reg_param(&reg_params[0], "sp", 32, PARAM_OUT);
370 buf_set_u32(reg_params[0].value, 0, 32, ALGO_STACK_POINTER_ADDR);
371
372 /* Begin executing the flash helper algorithm */
373 retval = target_start_algorithm(target, 0, 0, 1, reg_params,
374 algo_entry_addr, 0, &msp432_bank->armv7m_info);
375 destroy_reg_param(&reg_params[0]);
376 if (ERROR_OK != retval) {
377 LOG_ERROR("msp432: Failed to start flash helper algorithm");
378 return retval;
379 }
380
381 /*
382 * At this point, the algorithm is running on the target and
383 * ready to receive commands and data to flash the target
384 */
385
386 /* Issue the init command to the flash helper algorithm */
387 retval = msp432_exec_cmd(target, &algo_params, FLASH_INIT);
388 if (ERROR_OK != retval)
389 return retval;
390
391 retval = msp432_wait_return_code(target);
392
393 return retval;
394 }
395
396 static int msp432_quit(struct flash_bank *bank)
397 {
398 struct target *target = bank->target;
399 struct msp432_bank *msp432_bank = bank->driver_priv;
400 struct msp432_algo_params algo_params;
401
402 int retval;
403
404 /* Initialize algorithm parameters to default values */
405 msp432_init_params(&algo_params);
406
407 /* Issue the exit command to the flash helper algorithm */
408 retval = msp432_exec_cmd(target, &algo_params, FLASH_EXIT);
409 if (ERROR_OK != retval)
410 return retval;
411
412 (void)msp432_wait_return_code(target);
413
414 /* Regardless of the return code, attempt to halt the target */
415 (void)target_halt(target);
416
417 /* Now confirm target halted and clean up from flash helper algorithm */
418 retval = target_wait_algorithm(target, 0, NULL, 0, NULL, 0, FLASH_TIMEOUT,
419 &msp432_bank->armv7m_info);
420
421 target_free_working_area(target, msp432_bank->working_area);
422 msp432_bank->working_area = NULL;
423
424 return retval;
425 }
426
427 static int msp432_mass_erase(struct flash_bank *bank, bool all)
428 {
429 struct target *target = bank->target;
430 struct msp432_bank *msp432_bank = bank->driver_priv;
431 struct msp432_algo_params algo_params;
432
433 int retval;
434
435 if (TARGET_HALTED != target->state) {
436 LOG_ERROR("Target not halted");
437 return ERROR_TARGET_NOT_HALTED;
438 }
439
440 retval = msp432_init(bank);
441 if (ERROR_OK != retval)
442 return retval;
443
444 /* Initialize algorithm parameters to default values */
445 msp432_init_params(&algo_params);
446 if (all) {
447 buf_set_u32(algo_params.erase_param, 0, 32,
448 FLASH_ERASE_MAIN | FLASH_ERASE_INFO);
449 if (msp432_bank->unlock_bsl)
450 buf_set_u32(algo_params.unlock_bsl, 0, 32, FLASH_UNLOCK_BSL);
451 }
452
453 /* Issue the mass erase command to the flash helper algorithm */
454 retval = msp432_exec_cmd(target, &algo_params, FLASH_MASS_ERASE);
455 if (ERROR_OK != retval) {
456 (void)msp432_quit(bank);
457 return retval;
458 }
459
460 retval = msp432_wait_return_code(target);
461 if (ERROR_OK != retval) {
462 (void)msp432_quit(bank);
463 return retval;
464 }
465
466 retval = msp432_quit(bank);
467 if (ERROR_OK != retval)
468 return retval;
469
470 return retval;
471 }
472
473 COMMAND_HANDLER(msp432_mass_erase_command)
474 {
475 struct flash_bank *bank;
476 struct msp432_bank *msp432_bank;
477 bool all;
478
479 int retval;
480
481 if (1 > CMD_ARGC)
482 return ERROR_COMMAND_SYNTAX_ERROR;
483
484 retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
485 if (retval != ERROR_OK)
486 return retval;
487
488 if (1 == CMD_ARGC) {
489 all = false;
490 } else if (2 == CMD_ARGC) {
491 /* Check argument for how much to erase */
492 if (0 == strcmp(CMD_ARGV[1], "main"))
493 all = false;
494 else if (0 == strcmp(CMD_ARGV[1], "all"))
495 all = true;
496 else
497 return ERROR_COMMAND_SYNTAX_ERROR;
498 } else {
499 return ERROR_COMMAND_SYNTAX_ERROR;
500 }
501
502 msp432_bank = bank->driver_priv;
503
504 if (MSP432E4 == msp432_bank->family_type) {
505 /* MSP432E4 does not have main vs info regions, ignore "all" */
506 all = false;
507 }
508
509 retval = msp432_mass_erase(bank, all);
510 if (ERROR_OK != retval)
511 return retval;
512
513 if (MSP432E4 == msp432_bank->family_type) {
514 /* MSP432E4 does not have main vs info regions */
515 LOG_INFO("msp432: Mass erase of flash is complete");
516 } else {
517 LOG_INFO("msp432: Mass erase of %s is complete",
518 all ? "main + information flash" : "main flash");
519 }
520
521 return ERROR_OK;
522 }
523
524 COMMAND_HANDLER(msp432_bsl_command)
525 {
526 struct flash_bank *bank;
527 struct msp432_bank *msp432_bank;
528
529 int retval;
530
531 if (1 > CMD_ARGC)
532 return ERROR_COMMAND_SYNTAX_ERROR;
533
534 retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
535 if (retval != ERROR_OK)
536 return retval;
537
538 msp432_bank = bank->driver_priv;
539
540 if (MSP432E4 == msp432_bank->family_type) {
541 LOG_WARNING("msp432: MSP432E4 does not have a BSL region");
542 return ERROR_OK;
543 }
544
545 if (2 == CMD_ARGC) {
546 if (0 == strcmp(CMD_ARGV[1], "lock"))
547 msp432_bank->unlock_bsl = false;
548 else if (0 == strcmp(CMD_ARGV[1], "unlock"))
549 msp432_bank->unlock_bsl = true;
550 else
551 return ERROR_COMMAND_SYNTAX_ERROR;
552 } else if (1 != CMD_ARGC) {
553 /* Extra, unknown argument passed in */
554 return ERROR_COMMAND_SYNTAX_ERROR;
555 }
556
557 LOG_INFO("msp432: BSL flash region is currently %slocked",
558 msp432_bank->unlock_bsl ? "un" : "");
559
560 return ERROR_OK;
561 }
562
563 FLASH_BANK_COMMAND_HANDLER(msp432_flash_bank_command)
564 {
565 struct msp432_bank *msp432_bank;
566
567 if (CMD_ARGC < 6)
568 return ERROR_COMMAND_SYNTAX_ERROR;
569
570 /* Create shared private struct for flash banks */
571 msp432_bank = malloc(sizeof(struct msp432_bank));
572 if (NULL == msp432_bank)
573 return ERROR_FAIL;
574
575 /* Initialize private flash information */
576 msp432_bank->device_id = 0;
577 msp432_bank->hardware_rev = 0;
578 msp432_bank->family_type = MSP432_NO_FAMILY;
579 msp432_bank->device_type = MSP432_NO_TYPE;
580 msp432_bank->sector_length = 0x1000;
581 msp432_bank->probed_main = false;
582 msp432_bank->probed_info = false;
583 msp432_bank->unlock_bsl = false;
584 msp432_bank->working_area = NULL;
585
586 /* Finish up initial settings here */
587 bank->driver_priv = msp432_bank;
588 bank->base = FLASH_BASE;
589
590 return ERROR_OK;
591 }
592
593 static int msp432_erase(struct flash_bank *bank, int first, int last)
594 {
595 struct target *target = bank->target;
596 struct msp432_bank *msp432_bank = bank->driver_priv;
597 struct msp432_algo_params algo_params;
598
599 bool is_main = FLASH_BASE == bank->base;
600 bool is_info = P4_FLASH_INFO_BASE == bank->base;
601
602 int retval;
603
604 if (TARGET_HALTED != target->state) {
605 LOG_ERROR("Target not halted");
606 return ERROR_TARGET_NOT_HALTED;
607 }
608
609 /* Do a mass erase if user requested all sectors of main flash */
610 if (is_main && (first == 0) && (last == (bank->num_sectors - 1))) {
611 /* Request mass erase of main flash */
612 return msp432_mass_erase(bank, false);
613 }
614
615 retval = msp432_init(bank);
616 if (ERROR_OK != retval)
617 return retval;
618
619 /* Initialize algorithm parameters to default values */
620 msp432_init_params(&algo_params);
621
622 /* Adjust params if this is the info bank */
623 if (is_info) {
624 buf_set_u32(algo_params.erase_param, 0, 32, FLASH_ERASE_INFO);
625 /* And flag if BSL is unlocked */
626 if (msp432_bank->unlock_bsl)
627 buf_set_u32(algo_params.unlock_bsl, 0, 32, FLASH_UNLOCK_BSL);
628 }
629
630 /* Erase requested sectors one by one */
631 for (int i = first; i <= last; i++) {
632
633 /* Skip TVL (read-only) sector of the info bank */
634 if (is_info && 1 == i)
635 continue;
636
637 /* Skip BSL sectors of info bank if locked */
638 if (is_info && (2 == i || 3 == i) &&
639 !msp432_bank->unlock_bsl)
640 continue;
641
642 /* Convert sector number to starting address of sector */
643 buf_set_u32(algo_params.address, 0, 32, bank->base +
644 (i * msp432_bank->sector_length));
645
646 /* Issue the sector erase command to the flash helper algorithm */
647 retval = msp432_exec_cmd(target, &algo_params, FLASH_SECTOR_ERASE);
648 if (ERROR_OK != retval) {
649 (void)msp432_quit(bank);
650 return retval;
651 }
652
653 retval = msp432_wait_return_code(target);
654 if (ERROR_OK != retval) {
655 (void)msp432_quit(bank);
656 return retval;
657 }
658 }
659
660 retval = msp432_quit(bank);
661 if (ERROR_OK != retval)
662 return retval;
663
664 return retval;
665 }
666
667 static int msp432_write(struct flash_bank *bank, const uint8_t *buffer,
668 uint32_t offset, uint32_t count)
669 {
670 struct target *target = bank->target;
671 struct msp432_bank *msp432_bank = bank->driver_priv;
672 struct msp432_algo_params algo_params;
673 uint32_t size;
674 uint32_t data_ready = BUFFER_DATA_READY;
675 long long start_ms;
676 long long elapsed_ms;
677
678 bool is_info = P4_FLASH_INFO_BASE == bank->base;
679
680 int retval;
681
682 if (TARGET_HALTED != target->state) {
683 LOG_ERROR("Target not halted");
684 return ERROR_TARGET_NOT_HALTED;
685 }
686
687 /*
688 * Block attempts to write to read-only sectors of flash
689 * The TVL region in sector 1 of the info flash is always read-only
690 * The BSL region in sectors 2 and 3 of the info flash may be unlocked
691 * The helper algorithm will hang on attempts to write to TVL
692 */
693 if (is_info) {
694 /* Set read-only start to TVL sector */
695 uint32_t start = 0x1000;
696 /* Set read-only end after BSL region if locked */
697 uint32_t end = (msp432_bank->unlock_bsl) ? 0x2000 : 0x4000;
698 /* Check if request includes anything in read-only sectors */
699 if ((offset + count - 1) < start || offset >= end) {
700 /* The request includes no bytes in read-only sectors */
701 /* Fall out and process the request normally */
702 } else {
703 /* Send a request for anything before read-only sectors */
704 if (offset < start) {
705 uint32_t start_count = MIN(start - offset, count);
706 retval = msp432_write(bank, buffer, offset, start_count);
707 if (ERROR_OK != retval)
708 return retval;
709 }
710 /* Send a request for anything after read-only sectors */
711 if ((offset + count - 1) >= end) {
712 uint32_t skip = end - offset;
713 count -= skip;
714 offset += skip;
715 buffer += skip;
716 return msp432_write(bank, buffer, offset, count);
717 } else {
718 /* Request is entirely in read-only sectors */
719 return ERROR_OK;
720 }
721 }
722 }
723
724 retval = msp432_init(bank);
725 if (ERROR_OK != retval)
726 return retval;
727
728 /* Initialize algorithm parameters to default values */
729 msp432_init_params(&algo_params);
730
731 /* Set up parameters for requested flash write operation */
732 buf_set_u32(algo_params.address, 0, 32, bank->base + offset);
733 buf_set_u32(algo_params.length, 0, 32, count);
734
735 /* Check if this is the info bank */
736 if (is_info) {
737 /* And flag if BSL is unlocked */
738 if (msp432_bank->unlock_bsl)
739 buf_set_u32(algo_params.unlock_bsl, 0, 32, FLASH_UNLOCK_BSL);
740 }
741
742 /* Set up flash helper algorithm to continuous flash mode */
743 retval = msp432_exec_cmd(target, &algo_params, FLASH_CONTINUOUS);
744 if (ERROR_OK != retval) {
745 (void)msp432_quit(bank);
746 return retval;
747 }
748
749 /* Write requested data, one buffer at a time */
750 start_ms = timeval_ms();
751 while (count > 0) {
752
753 if (count > ALGO_BUFFER_SIZE)
754 size = ALGO_BUFFER_SIZE;
755 else
756 size = count;
757
758 /* Put next block of data to flash into buffer */
759 retval = target_write_buffer(target, ALGO_BUFFER1_ADDR, size, buffer);
760 if (ERROR_OK != retval) {
761 LOG_ERROR("Unable to write data to target memory");
762 (void)msp432_quit(bank);
763 return ERROR_FLASH_OPERATION_FAILED;
764 }
765
766 /* Signal the flash helper algorithm that data is ready to flash */
767 retval = target_write_u32(target, ALGO_BUFFER1_STATUS_ADDR,
768 data_ready);
769 if (ERROR_OK != retval) {
770 (void)msp432_quit(bank);
771 return ERROR_FLASH_OPERATION_FAILED;
772 }
773
774 retval = msp432_wait_inactive(target, 1);
775 if (ERROR_OK != retval) {
776 (void)msp432_quit(bank);
777 return retval;
778 }
779
780 count -= size;
781 buffer += size;
782
783 elapsed_ms = timeval_ms() - start_ms;
784 if (elapsed_ms > 500)
785 keep_alive();
786 }
787
788 /* Confirm that the flash helper algorithm is finished */
789 retval = msp432_wait_return_code(target);
790 if (ERROR_OK != retval) {
791 (void)msp432_quit(bank);
792 return retval;
793 }
794
795 retval = msp432_quit(bank);
796 if (ERROR_OK != retval)
797 return retval;
798
799 return retval;
800 }
801
802 static int msp432_probe(struct flash_bank *bank)
803 {
804 struct target *target = bank->target;
805 struct msp432_bank *msp432_bank = bank->driver_priv;
806
807 uint32_t device_id;
808 uint32_t hardware_rev;
809
810 uint32_t sector_length;
811 uint32_t size;
812 int num_sectors;
813
814 bool is_main = FLASH_BASE == bank->base;
815 bool is_info = P4_FLASH_INFO_BASE == bank->base;
816
817 int retval;
818
819 /* Check if this bank has already been successfully probed */
820 if (is_main && msp432_bank->probed_main)
821 return ERROR_OK;
822 if (is_info && msp432_bank->probed_info)
823 return ERROR_OK;
824
825 /* Read the flash size register to determine this is a P4 or not */
826 /* MSP432P4s will return the size of flash. MSP432E4s will return zero */
827 retval = target_read_u32(target, P4_FLASH_MAIN_SIZE_REG, &size);
828 if (ERROR_OK != retval)
829 return retval;
830
831 if (0 == size) {
832 /* This is likely an MSP432E4 */
833 msp432_bank->family_type = MSP432E4;
834
835 retval = target_read_u32(target, E4_DID0_REG, &device_id);
836 if (ERROR_OK != retval)
837 return retval;
838
839 msp432_bank->device_id = device_id;
840
841 retval = target_read_u32(target, E4_DID1_REG, &hardware_rev);
842 if (ERROR_OK != retval)
843 return retval;
844
845 msp432_bank->hardware_rev = hardware_rev;
846 } else {
847 /* This is likely an MSP432P4 */
848 msp432_bank->family_type = MSP432P4;
849
850 retval = target_read_u32(target, P4_DEVICE_ID_REG, &device_id);
851 if (ERROR_OK != retval)
852 return retval;
853
854 msp432_bank->device_id = device_id & 0xFFFF;
855
856 retval = target_read_u32(target, P4_HARDWARE_REV_REG, &hardware_rev);
857 if (ERROR_OK != retval)
858 return retval;
859
860 msp432_bank->hardware_rev = hardware_rev & 0xFF;
861 }
862
863 msp432_bank->device_type = msp432_device_type(msp432_bank->family_type,
864 msp432_bank->device_id, msp432_bank->hardware_rev);
865
866 if (MSP432P4 == msp432_bank->family_type) {
867 /* Set up MSP432P4 specific flash parameters */
868 if (is_main) {
869 retval = target_read_u32(target, P4_FLASH_MAIN_SIZE_REG, &size);
870 if (ERROR_OK != retval)
871 return retval;
872
873 sector_length = P4_SECTOR_LENGTH;
874 num_sectors = size / sector_length;
875 } else if (is_info) {
876 if (msp432_bank->device_type == MSP432P411X ||
877 msp432_bank->device_type == MSP432P411X_GUESS) {
878 /* MSP432P411x has an info size register, use that for size */
879 retval = target_read_u32(target, P4_FLASH_INFO_SIZE_REG, &size);
880 if (ERROR_OK != retval)
881 return retval;
882 } else {
883 /* All other MSP432P401x devices have fixed info region size */
884 size = 0x4000; /* 16 KB info region */
885 }
886 sector_length = P4_SECTOR_LENGTH;
887 num_sectors = size / sector_length;
888 } else {
889 /* Invalid bank somehow */
890 return ERROR_FAIL;
891 }
892 } else {
893 /* Set up MSP432E4 specific flash parameters */
894 if (is_main) {
895 size = E4_FLASH_SIZE;
896 sector_length = E4_SECTOR_LENGTH;
897 num_sectors = size / sector_length;
898 } else {
899 /* Invalid bank somehow */
900 return ERROR_FAIL;
901 }
902 }
903
904 if (NULL != bank->sectors) {
905 free(bank->sectors);
906 bank->sectors = NULL;
907 }
908
909 if (num_sectors > 0) {
910 bank->sectors = malloc(sizeof(struct flash_sector) * num_sectors);
911 if (NULL == bank->sectors)
912 return ERROR_FAIL;
913 }
914
915 bank->size = size;
916 bank->write_start_alignment = 0;
917 bank->write_end_alignment = 0;
918 bank->num_sectors = num_sectors;
919 msp432_bank->sector_length = sector_length;
920
921 for (int i = 0; i < num_sectors; i++) {
922 bank->sectors[i].offset = i * sector_length;
923 bank->sectors[i].size = sector_length;
924 bank->sectors[i].is_erased = -1;
925 bank->sectors[i].is_protected = 0;
926 }
927
928 /* We've successfully determined the stats on this flash bank */
929 if (is_main)
930 msp432_bank->probed_main = true;
931 if (is_info)
932 msp432_bank->probed_info = true;
933
934 if (is_main && MSP432P4 == msp432_bank->family_type) {
935 /* Create the info flash bank needed by MSP432P4 variants */
936 struct flash_bank *info = calloc(sizeof(struct flash_bank), 1);
937 if (NULL == info)
938 return ERROR_FAIL;
939
940 /* Create a name for the info bank, append "_1" to main name */
941 char *name = malloc(strlen(bank->name) + 3);
942 strcpy(name, bank->name);
943 strcat(name, "_1");
944
945 /* Initialize info bank */
946 info->name = name;
947 info->target = bank->target;
948 info->driver = bank->driver;
949 info->driver_priv = msp432_bank;
950 info->base = P4_FLASH_INFO_BASE;
951
952 flash_bank_add(info);
953 }
954
955 /* If we fall through to here, then all went well */
956
957 return ERROR_OK;
958 }
959
960 static int msp432_auto_probe(struct flash_bank *bank)
961 {
962 struct msp432_bank *msp432_bank = bank->driver_priv;
963
964 bool is_main = FLASH_BASE == bank->base;
965 bool is_info = P4_FLASH_INFO_BASE == bank->base;
966
967 int retval = ERROR_OK;
968
969 if (is_main)
970 if (!msp432_bank->probed_main)
971 retval = msp432_probe(bank);
972 if (is_info)
973 if (!msp432_bank->probed_info)
974 retval = msp432_probe(bank);
975
976 return retval;
977 }
978
979 static int msp432_info(struct flash_bank *bank, char *buf, int buf_size)
980 {
981 struct msp432_bank *msp432_bank = bank->driver_priv;
982 int printed = 0;
983
984 switch (msp432_bank->device_type) {
985 case MSP432P401X_DEPR:
986 if (0xFFFF == msp432_bank->device_id) {
987 /* Very early pre-production silicon currently deprecated */
988 printed = snprintf(buf, buf_size,
989 "MSP432P401x pre-production device (deprecated silicon)\n"
990 SUPPORT_MESSAGE);
991 } else {
992 /* Revision A or B silicon, also deprecated */
993 printed = snprintf(buf, buf_size,
994 "MSP432P401x Device Rev %c (deprecated silicon)\n"
995 SUPPORT_MESSAGE, (char)msp432_bank->hardware_rev);
996 }
997 break;
998 case MSP432P401X:
999 printed = snprintf(buf, buf_size,
1000 "MSP432P401x Device Rev %c\n",
1001 (char)msp432_bank->hardware_rev);
1002 break;
1003 case MSP432P411X:
1004 printed = snprintf(buf, buf_size,
1005 "MSP432P411x Device Rev %c\n",
1006 (char)msp432_bank->hardware_rev);
1007 break;
1008 case MSP432E401Y:
1009 printed = snprintf(buf, buf_size, "MSP432E401Y Device\n");
1010 break;
1011 case MSP432E411Y:
1012 printed = snprintf(buf, buf_size, "MSP432E411Y Device\n");
1013 break;
1014 case MSP432E4X_GUESS:
1015 printed = snprintf(buf, buf_size,
1016 "Unrecognized MSP432E4 DID0 and DID1 IDs (%08X, %08X)",
1017 msp432_bank->device_id, msp432_bank->hardware_rev);
1018 break;
1019 case MSP432P401X_GUESS:
1020 case MSP432P411X_GUESS:
1021 default:
1022 printed = snprintf(buf, buf_size,
1023 "Unrecognized MSP432P4 Device ID and Hardware Rev (%04X, %02X)",
1024 msp432_bank->device_id, msp432_bank->hardware_rev);
1025 break;
1026 }
1027
1028 buf_size -= printed;
1029
1030 if (0 > buf_size)
1031 return ERROR_BUF_TOO_SMALL;
1032
1033 return ERROR_OK;
1034 }
1035
1036 static int msp432_protect_check(struct flash_bank *bank)
1037 {
1038 /* Added to suppress warning, not needed for MSP432 flash */
1039 return ERROR_OK;
1040 }
1041
1042 static void msp432_flash_free_driver_priv(struct flash_bank *bank)
1043 {
1044 bool is_main = FLASH_BASE == bank->base;
1045
1046 /* A single private struct is shared between main and info banks */
1047 /* Only free it on the call for main bank */
1048 if (is_main && (NULL != bank->driver_priv))
1049 free(bank->driver_priv);
1050
1051 /* Forget about the private struct on both main and info banks */
1052 bank->driver_priv = NULL;
1053 }
1054
1055 static const struct command_registration msp432_exec_command_handlers[] = {
1056 {
1057 .name = "mass_erase",
1058 .handler = msp432_mass_erase_command,
1059 .mode = COMMAND_EXEC,
1060 .help = "Erase entire flash memory on device.",
1061 .usage = "bank_id ['main' | 'all']",
1062 },
1063 {
1064 .name = "bsl",
1065 .handler = msp432_bsl_command,
1066 .mode = COMMAND_EXEC,
1067 .help = "Allow BSL to be erased or written by flash commands.",
1068 .usage = "bank_id ['unlock' | 'lock']",
1069 },
1070 COMMAND_REGISTRATION_DONE
1071 };
1072
1073 static const struct command_registration msp432_command_handlers[] = {
1074 {
1075 .name = "msp432",
1076 .mode = COMMAND_EXEC,
1077 .help = "MSP432 flash command group",
1078 .usage = "",
1079 .chain = msp432_exec_command_handlers,
1080 },
1081 COMMAND_REGISTRATION_DONE
1082 };
1083
1084 const struct flash_driver msp432_flash = {
1085 .name = "msp432",
1086 .commands = msp432_command_handlers,
1087 .flash_bank_command = msp432_flash_bank_command,
1088 .erase = msp432_erase,
1089 .write = msp432_write,
1090 .read = default_flash_read,
1091 .probe = msp432_probe,
1092 .auto_probe = msp432_auto_probe,
1093 .erase_check = default_flash_blank_check,
1094 .protect_check = msp432_protect_check,
1095 .info = msp432_info,
1096 .free_driver_priv = msp432_flash_free_driver_priv,
1097 };
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