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flash/nor/mdr: Use 'bool' data type
[openocd.git] / src / flash / nor / psoc6.c
1 /***************************************************************************
2 * *
3 * Copyright (C) 2018 by Bohdan Tymkiv *
4 * bohdan.tymkiv@cypress.com bohdan200@gmail.com *
5 * *
6 * This program is free software; you can redistribute it and/or modify *
7 * it under the terms of the GNU General Public License as published by *
8 * the Free Software Foundation; either version 2 of the License, or *
9 * (at your option) any later version. *
10 * *
11 * This program is distributed in the hope that it will be useful, *
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
14 * GNU General Public License for more details. *
15 * *
16 * You should have received a copy of the GNU General Public License *
17 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
18 ***************************************************************************/
19
20 #ifdef HAVE_CONFIG_H
21 #include "config.h"
22 #endif
23
24 #include <time.h>
25
26 #include "imp.h"
27 #include "target/target.h"
28 #include "target/cortex_m.h"
29 #include "target/breakpoints.h"
30 #include "target/target_type.h"
31 #include "time_support.h"
32 #include "target/algorithm.h"
33
34 /**************************************************************************************************
35 * PSoC6 device definitions
36 *************************************************************************************************/
37 #define MFLASH_SECTOR_SIZE (256u * 1024u)
38 #define WFLASH_SECTOR_SIZE (32u * 1024u)
39
40 #define MEM_BASE_MFLASH 0x10000000u
41 #define MEM_BASE_WFLASH 0x14000000u
42 #define MEM_WFLASH_SIZE 32768u
43 #define MEM_BASE_SFLASH 0x16000000u
44 #define RAM_STACK_WA_SIZE 2048u
45 #define PSOC6_SPCIF_GEOMETRY 0x4025F00Cu
46
47 #define PROTECTION_UNKNOWN 0x00u
48 #define PROTECTION_VIRGIN 0x01u
49 #define PROTECTION_NORMAL 0x02u
50 #define PROTECTION_SECURE 0x03u
51 #define PROTECTION_DEAD 0x04u
52
53 #define MEM_BASE_IPC 0x40230000u
54 #define IPC_STRUCT_SIZE 0x20u
55 #define MEM_IPC(n) (MEM_BASE_IPC + (n) * IPC_STRUCT_SIZE)
56 #define MEM_IPC_ACQUIRE(n) (MEM_IPC(n) + 0x00u)
57 #define MEM_IPC_NOTIFY(n) (MEM_IPC(n) + 0x08u)
58 #define MEM_IPC_DATA(n) (MEM_IPC(n) + 0x0Cu)
59 #define MEM_IPC_LOCK_STATUS(n) (MEM_IPC(n) + 0x10u)
60
61 #define MEM_BASE_IPC_INTR 0x40231000u
62 #define IPC_INTR_STRUCT_SIZE 0x20u
63 #define MEM_IPC_INTR(n) (MEM_BASE_IPC_INTR + (n) * IPC_INTR_STRUCT_SIZE)
64 #define MEM_IPC_INTR_MASK(n) (MEM_IPC_INTR(n) + 0x08u)
65 #define IPC_ACQUIRE_SUCCESS_MSK 0x80000000u
66 #define IPC_LOCK_ACQUIRED_MSK 0x80000000u
67
68 #define IPC_ID 2u
69 #define IPC_INTR_ID 0u
70 #define IPC_TIMEOUT_MS 1000
71
72 #define SROMAPI_SIID_REQ 0x00000001u
73 #define SROMAPI_SIID_REQ_FAMILY_REVISION (SROMAPI_SIID_REQ | 0x000u)
74 #define SROMAPI_SIID_REQ_SIID_PROTECTION (SROMAPI_SIID_REQ | 0x100u)
75 #define SROMAPI_WRITEROW_REQ 0x05000100u
76 #define SROMAPI_PROGRAMROW_REQ 0x06000100u
77 #define SROMAPI_ERASESECTOR_REQ 0x14000100u
78 #define SROMAPI_ERASEALL_REQ 0x0A000100u
79 #define SROMAPI_ERASEROW_REQ 0x1C000100u
80
81 #define SROMAPI_STATUS_MSK 0xF0000000u
82 #define SROMAPI_STAT_SUCCESS 0xA0000000u
83 #define SROMAPI_DATA_LOCATION_MSK 0x00000001u
84 #define SROMAPI_CALL_TIMEOUT_MS 1500
85
86 struct psoc6_target_info {
87 uint32_t silicon_id;
88 uint8_t protection;
89 uint32_t main_flash_sz;
90 uint32_t row_sz;
91 bool is_probed;
92 };
93
94 struct timeout {
95 int64_t start_time;
96 long timeout_ms;
97 };
98
99 struct row_region {
100 uint32_t addr;
101 size_t size;
102 };
103
104 static const struct row_region safe_sflash_regions[] = {
105 {0x16000800, 0x800}, /* SFLASH: User Data */
106 {0x16001A00, 0x200}, /* SFLASH: NAR */
107 {0x16005A00, 0xC00}, /* SFLASH: Public Key */
108 {0x16007C00, 0x400}, /* SFLASH: TOC2 */
109 };
110
111 #define SFLASH_NUM_REGIONS ARRAY_SIZE(safe_sflash_regions)
112
113 static struct working_area *g_stack_area;
114 static struct armv7m_algorithm g_armv7m_info;
115
116 /** ***********************************************************************************************
117 * @brief Initializes `struct timeout` structure with given timeout value
118 * @param to pointer to `struct timeout` structure
119 * @param timeout_ms timeout, in milliseconds
120 *************************************************************************************************/
121 static void timeout_init(struct timeout *to, long timeout_ms)
122 {
123 to->start_time = timeval_ms();
124 to->timeout_ms = timeout_ms;
125 }
126
127 /** ***********************************************************************************************
128 * @brief Returns true if given `struct timeout` structure has expired
129 * @param to pointer to `struct timeout` structure
130 * @return true if timeout expired
131 *************************************************************************************************/
132 static bool timeout_expired(struct timeout *to)
133 {
134 return (timeval_ms() - to->start_time) > to->timeout_ms;
135 }
136
137 /** ***********************************************************************************************
138 * @brief Starts pseudo flash algorithm and leaves it running. Function allocates working area for
139 * algorithm code and CPU stack, adjusts stack pointer, uploads and starts the algorithm.
140 * Algorithm (a basic infinite loop) runs asynchronously while driver performs Flash operations.
141 *
142 * @param target target for the algorithm
143 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
144 *************************************************************************************************/
145 static int sromalgo_prepare(struct target *target)
146 {
147 int hr;
148
149 /* Initialize Vector Table Offset register (in case FW modified it) */
150 hr = target_write_u32(target, 0xE000ED08, 0x00000000);
151 if (hr != ERROR_OK)
152 return hr;
153
154 /* Restore THUMB bit in xPSR register */
155 const struct armv7m_common *cm = target_to_armv7m(target);
156 hr = cm->store_core_reg_u32(target, ARMV7M_xPSR, 0x01000000);
157 if (hr != ERROR_OK)
158 return hr;
159
160 /* Allocate Working Area for Stack and Flash algorithm */
161 hr = target_alloc_working_area(target, RAM_STACK_WA_SIZE, &g_stack_area);
162 if (hr != ERROR_OK)
163 return hr;
164
165 g_armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
166 g_armv7m_info.core_mode = ARM_MODE_THREAD;
167
168 struct reg_param reg_params;
169 init_reg_param(&reg_params, "sp", 32, PARAM_OUT);
170 buf_set_u32(reg_params.value, 0, 32, g_stack_area->address + g_stack_area->size);
171
172 /* Write basic infinite loop algorithm to target RAM */
173 hr = target_write_u32(target, g_stack_area->address, 0xFEE7FEE7);
174 if (hr != ERROR_OK)
175 goto destroy_rp_free_wa;
176
177 hr = target_start_algorithm(target, 0, NULL, 1, &reg_params, g_stack_area->address,
178 0, &g_armv7m_info);
179 if (hr != ERROR_OK)
180 goto destroy_rp_free_wa;
181
182 destroy_reg_param(&reg_params);
183
184 return hr;
185
186 destroy_rp_free_wa:
187 /* Something went wrong, do some cleanup */
188 destroy_reg_param(&reg_params);
189
190 if (g_stack_area) {
191 target_free_working_area(target, g_stack_area);
192 g_stack_area = NULL;
193 }
194
195 return hr;
196 }
197
198 /** ***********************************************************************************************
199 * @brief Stops running flash algorithm and releases associated resources.
200 * This function is also used for cleanup in case of errors so g_stack_area may be NULL.
201 * These cases have to be handled gracefully.
202 *
203 * @param target current target
204 *************************************************************************************************/
205 static void sromalgo_release(struct target *target)
206 {
207 int hr = ERROR_OK;
208
209 if (g_stack_area) {
210 /* Stop flash algorithm if it is running */
211 if (target->running_alg) {
212 hr = target_halt(target);
213 if (hr != ERROR_OK)
214 goto exit_free_wa;
215
216 hr = target_wait_algorithm(target, 0, NULL, 0, NULL, 0,
217 IPC_TIMEOUT_MS, &g_armv7m_info);
218 if (hr != ERROR_OK)
219 goto exit_free_wa;
220 }
221
222 exit_free_wa:
223 /* Free Stack/Flash algorithm working area */
224 target_free_working_area(target, g_stack_area);
225 g_stack_area = NULL;
226 }
227 }
228
229 /** ***********************************************************************************************
230 * @brief Waits for expected IPC lock status. PSoC6 uses IPC structures for inter-core
231 * communication. Same IPCs are used to invoke SROM API. IPC structure must be locked prior to
232 * invoking any SROM API. This ensures nothing else in the system will use same IPC thus corrupting
233 * our data. Locking is performed by ipc_acquire(), this function ensures that IPC is actually
234 * in expected state
235 *
236 * @param target current target
237 * @param ipc_id IPC index to poll. IPC #2 is dedicated for DAP access
238 * @param lock_expected expected lock status
239 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
240 *************************************************************************************************/
241 static int ipc_poll_lock_stat(struct target *target, uint32_t ipc_id, bool lock_expected)
242 {
243 int hr;
244 uint32_t reg_val;
245
246 struct timeout to;
247 timeout_init(&to, IPC_TIMEOUT_MS);
248
249 while (!timeout_expired(&to)) {
250 /* Process any server requests */
251 keep_alive();
252
253 /* Read IPC Lock status */
254 hr = target_read_u32(target, MEM_IPC_LOCK_STATUS(ipc_id), &reg_val);
255 if (hr != ERROR_OK) {
256 LOG_ERROR("Unable to read IPC Lock Status register");
257 return hr;
258 }
259
260 bool is_locked = (reg_val & IPC_LOCK_ACQUIRED_MSK) != 0;
261
262 if (lock_expected == is_locked)
263 return ERROR_OK;
264 }
265
266 if (target->coreid) {
267 LOG_WARNING("SROM API calls via CM4 target are supported on single-core PSoC6 devices only. "
268 "Please perform all Flash-related operations via CM0+ target on dual-core devices.");
269 }
270
271 LOG_ERROR("Timeout polling IPC Lock Status");
272 return ERROR_TARGET_TIMEOUT;
273 }
274
275 /** ***********************************************************************************************
276 * @brief Acquires IPC structure. PSoC6 uses IPC structures for inter-core communication.
277 * Same IPCs are used to invoke SROM API. IPC structure must be locked prior to invoking any SROM API.
278 * This ensures nothing else in the system will use same IPC thus corrupting our data.
279 * This function locks the IPC.
280 *
281 * @param target current target
282 * @param ipc_id ipc_id IPC index to acquire. IPC #2 is dedicated for DAP access
283 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
284 *************************************************************************************************/
285 static int ipc_acquire(struct target *target, char ipc_id)
286 {
287 int hr = ERROR_OK;
288 bool is_acquired = false;
289 uint32_t reg_val;
290
291 struct timeout to;
292 timeout_init(&to, IPC_TIMEOUT_MS);
293
294 while (!timeout_expired(&to)) {
295 keep_alive();
296
297 hr = target_write_u32(target, MEM_IPC_ACQUIRE(ipc_id), IPC_ACQUIRE_SUCCESS_MSK);
298 if (hr != ERROR_OK) {
299 LOG_ERROR("Unable to write to IPC Acquire register");
300 return hr;
301 }
302
303 /* Check if data is written on first step */
304 hr = target_read_u32(target, MEM_IPC_ACQUIRE(ipc_id), &reg_val);
305 if (hr != ERROR_OK) {
306 LOG_ERROR("Unable to read IPC Acquire register");
307 return hr;
308 }
309
310 is_acquired = (reg_val & IPC_ACQUIRE_SUCCESS_MSK) != 0;
311 if (is_acquired) {
312 /* If IPC structure is acquired, the lock status should be set */
313 hr = ipc_poll_lock_stat(target, ipc_id, true);
314 break;
315 }
316 }
317
318 if (!is_acquired)
319 LOG_ERROR("Timeout acquiring IPC structure");
320
321 return hr;
322 }
323
324 /** ***********************************************************************************************
325 * @brief Invokes SROM API functions which are responsible for Flash operations
326 *
327 * @param target current target
328 * @param req_and_params requect id of the function to invoke
329 * @param working_area address of memory buffer in target's memory space for SROM API parameters
330 * @param data_out pointer to variable which will be populated with execution status
331 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
332 *************************************************************************************************/
333 static int call_sromapi(struct target *target,
334 uint32_t req_and_params,
335 uint32_t working_area,
336 uint32_t *data_out)
337 {
338 int hr;
339
340 bool is_data_in_ram = (req_and_params & SROMAPI_DATA_LOCATION_MSK) == 0;
341
342 hr = ipc_acquire(target, IPC_ID);
343 if (hr != ERROR_OK)
344 return hr;
345
346 if (is_data_in_ram)
347 hr = target_write_u32(target, MEM_IPC_DATA(IPC_ID), working_area);
348 else
349 hr = target_write_u32(target, MEM_IPC_DATA(IPC_ID), req_and_params);
350
351 if (hr != ERROR_OK)
352 return hr;
353
354 /* Enable notification interrupt of IPC_INTR_STRUCT0(CM0+) for IPC_STRUCT2 */
355 hr = target_write_u32(target, MEM_IPC_INTR_MASK(IPC_INTR_ID), 1u << (16 + IPC_ID));
356 if (hr != ERROR_OK)
357 return hr;
358
359 hr = target_write_u32(target, MEM_IPC_NOTIFY(IPC_ID), 1);
360 if (hr != ERROR_OK)
361 return hr;
362
363 /* Poll lock status */
364 hr = ipc_poll_lock_stat(target, IPC_ID, false);
365 if (hr != ERROR_OK)
366 return hr;
367
368 /* Poll Data byte */
369 if (is_data_in_ram)
370 hr = target_read_u32(target, working_area, data_out);
371 else
372 hr = target_read_u32(target, MEM_IPC_DATA(IPC_ID), data_out);
373
374 if (hr != ERROR_OK) {
375 LOG_ERROR("Error reading SROM API Status location");
376 return hr;
377 }
378
379 bool is_success = (*data_out & SROMAPI_STATUS_MSK) == SROMAPI_STAT_SUCCESS;
380 if (!is_success) {
381 LOG_ERROR("SROM API execution failed. Status: 0x%08X", (uint32_t)*data_out);
382 return ERROR_TARGET_FAILURE;
383 }
384
385 return ERROR_OK;
386 }
387
388 /** ***********************************************************************************************
389 * @brief Retrieves SiliconID and Protection status of the target device
390 * @param target current target
391 * @param si_id pointer to variable, will be populated with SiliconID
392 * @param protection pointer to variable, will be populated with protection status
393 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
394 *************************************************************************************************/
395 static int get_silicon_id(struct target *target, uint32_t *si_id, uint8_t *protection)
396 {
397 int hr;
398 uint32_t family_rev, siid_prot;
399
400 hr = sromalgo_prepare(target);
401 if (hr != ERROR_OK)
402 goto exit;
403
404 /* Read FamilyID and Revision */
405 hr = call_sromapi(target, SROMAPI_SIID_REQ_FAMILY_REVISION, 0, &family_rev);
406 if (hr != ERROR_OK)
407 goto exit;
408
409 /* Read SiliconID and Protection */
410 hr = call_sromapi(target, SROMAPI_SIID_REQ_SIID_PROTECTION, 0, &siid_prot);
411 if (hr != ERROR_OK)
412 goto exit;
413
414 *si_id = (siid_prot & 0x0000FFFF) << 16;
415 *si_id |= (family_rev & 0x00FF0000) >> 8;
416 *si_id |= (family_rev & 0x000000FF) >> 0;
417
418 *protection = (siid_prot & 0x000F0000) >> 0x10;
419
420 exit:
421 sromalgo_release(target);
422 return ERROR_OK;
423 }
424
425 /** ***********************************************************************************************
426 * @brief Translates Protection status to openocd-friendly boolean value
427 * @param bank current flash bank
428 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
429 *************************************************************************************************/
430 static int psoc6_protect_check(struct flash_bank *bank)
431 {
432 int is_protected;
433
434 struct psoc6_target_info *psoc6_info = bank->driver_priv;
435 int hr = get_silicon_id(bank->target, &psoc6_info->silicon_id, &psoc6_info->protection);
436 if (hr != ERROR_OK)
437 return hr;
438
439 switch (psoc6_info->protection) {
440 case PROTECTION_VIRGIN:
441 case PROTECTION_NORMAL:
442 is_protected = 0;
443 break;
444
445 case PROTECTION_UNKNOWN:
446 case PROTECTION_SECURE:
447 case PROTECTION_DEAD:
448 default:
449 is_protected = 1;
450 break;
451 }
452
453 for (unsigned int i = 0; i < bank->num_sectors; i++)
454 bank->sectors[i].is_protected = is_protected;
455
456 return ERROR_OK;
457 }
458
459 /** ***********************************************************************************************
460 * @brief Dummy function, Life Cycle transition is not currently supported
461 * @return ERROR_OK always
462 *************************************************************************************************/
463 static int psoc6_protect(struct flash_bank *bank, int set, unsigned int first,
464 unsigned int last)
465 {
466 (void)bank;
467 (void)set;
468 (void)first;
469 (void)last;
470
471 LOG_WARNING("Life Cycle transition for PSoC6 is not supported");
472 return ERROR_OK;
473 }
474
475 /** ***********************************************************************************************
476 * @brief Translates Protection status to string
477 * @param protection protection value
478 * @return pointer to const string describintg protection status
479 *************************************************************************************************/
480 static const char *protection_to_str(uint8_t protection)
481 {
482 switch (protection) {
483 case PROTECTION_VIRGIN:
484 return "VIRGIN";
485 case PROTECTION_NORMAL:
486 return "NORMAL";
487 case PROTECTION_SECURE:
488 return "SECURE";
489 case PROTECTION_DEAD:
490 return "DEAD";
491 case PROTECTION_UNKNOWN:
492 default:
493 return "UNKNOWN";
494 }
495 }
496
497 /** ***********************************************************************************************
498 * @brief psoc6_get_info Displays human-readable information about acquired device
499 * @param bank current flash bank
500 * @param buf pointer to buffer for human-readable text
501 * @param buf_size size of the buffer
502 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
503 *************************************************************************************************/
504 static int psoc6_get_info(struct flash_bank *bank, char *buf, int buf_size)
505 {
506 struct psoc6_target_info *psoc6_info = bank->driver_priv;
507
508 if (psoc6_info->is_probed == false)
509 return ERROR_FAIL;
510
511 int hr = get_silicon_id(bank->target, &psoc6_info->silicon_id, &psoc6_info->protection);
512 if (hr != ERROR_OK)
513 return hr;
514
515 snprintf(buf, buf_size,
516 "PSoC6 Silicon ID: 0x%08X\n"
517 "Protection: %s\n"
518 "Main Flash size: %d kB\n"
519 "Work Flash size: 32 kB\n",
520 psoc6_info->silicon_id,
521 protection_to_str(psoc6_info->protection),
522 psoc6_info->main_flash_sz / 1024);
523
524 return ERROR_OK;
525 }
526
527 /** ***********************************************************************************************
528 * @brief Checks if given flash bank belongs to Supervisory Flash
529 * @param bank current flash bank
530 * @return true if flash bank belongs to Supervisory Flash
531 *************************************************************************************************/
532 static bool is_sflash_bank(struct flash_bank *bank)
533 {
534 for (size_t i = 0; i < SFLASH_NUM_REGIONS; i++) {
535 if (bank->base == safe_sflash_regions[i].addr)
536 return true;
537 }
538
539 return false;
540 }
541
542 /** ***********************************************************************************************
543 * @brief Checks if given flash bank belongs to Work Flash
544 * @param bank current flash bank
545 * @return true if flash bank belongs to Work Flash
546 *************************************************************************************************/
547 static inline bool is_wflash_bank(struct flash_bank *bank)
548 {
549 return (bank->base == MEM_BASE_WFLASH);
550 }
551
552 /** ***********************************************************************************************
553 * @brief Checks if given flash bank belongs to Main Flash
554 * @param bank current flash bank
555 * @return true if flash bank belongs to Main Flash
556 *************************************************************************************************/
557 static inline bool is_mflash_bank(struct flash_bank *bank)
558 {
559 return (bank->base == MEM_BASE_MFLASH);
560 }
561
562 /** ***********************************************************************************************
563 * @brief Probes the device and populates related data structures with target flash geometry data.
564 * This is done in non-intrusive way, no SROM API calls are involved so GDB can safely attach to a
565 * running target. Function assumes that size of Work Flash is 32kB (true for all current part numbers)
566 *
567 * @param bank current flash bank
568 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
569 *************************************************************************************************/
570 static int psoc6_probe(struct flash_bank *bank)
571 {
572 struct target *target = bank->target;
573 struct psoc6_target_info *psoc6_info = bank->driver_priv;
574
575 int hr = ERROR_OK;
576
577 /* Retrieve data from SPCIF_GEOMATRY */
578 uint32_t geom;
579 target_read_u32(target, PSOC6_SPCIF_GEOMETRY, &geom);
580 uint32_t row_sz_lg2 = (geom & 0xF0) >> 4;
581 uint32_t row_sz = (0x01 << row_sz_lg2);
582 uint32_t row_cnt = 1 + ((geom & 0x00FFFF00) >> 8);
583 uint32_t bank_cnt = 1 + ((geom & 0xFF000000) >> 24);
584
585 /* Calculate size of Main Flash*/
586 uint32_t flash_sz_bytes = bank_cnt * row_cnt * row_sz;
587
588 if (bank->sectors) {
589 free(bank->sectors);
590 bank->sectors = NULL;
591 }
592
593 size_t bank_size = 0;
594
595 if (is_mflash_bank(bank))
596 bank_size = flash_sz_bytes;
597 else if (is_wflash_bank(bank))
598 bank_size = MEM_WFLASH_SIZE;
599 else if (is_sflash_bank(bank)) {
600 for (size_t i = 0; i < SFLASH_NUM_REGIONS; i++) {
601 if (safe_sflash_regions[i].addr == bank->base) {
602 bank_size = safe_sflash_regions[i].size;
603 break;
604 }
605 }
606 }
607
608 if (bank_size == 0) {
609 LOG_ERROR("Invalid Flash Bank base address in config file");
610 return ERROR_FLASH_BANK_INVALID;
611 }
612
613 unsigned int num_sectors = bank_size / row_sz;
614 bank->size = bank_size;
615 bank->chip_width = 4;
616 bank->bus_width = 4;
617 bank->erased_value = 0;
618 bank->default_padded_value = 0;
619
620 bank->num_sectors = num_sectors;
621 bank->sectors = calloc(num_sectors, sizeof(struct flash_sector));
622 for (unsigned int i = 0; i < num_sectors; i++) {
623 bank->sectors[i].size = row_sz;
624 bank->sectors[i].offset = i * row_sz;
625 bank->sectors[i].is_erased = -1;
626 bank->sectors[i].is_protected = -1;
627 }
628
629 psoc6_info->is_probed = true;
630 psoc6_info->main_flash_sz = flash_sz_bytes;
631 psoc6_info->row_sz = row_sz;
632
633 return hr;
634 }
635
636 /** ***********************************************************************************************
637 * @brief Probes target device only if it hasn't been probed yet
638 * @param bank current flash bank
639 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
640 *************************************************************************************************/
641 static int psoc6_auto_probe(struct flash_bank *bank)
642 {
643 struct psoc6_target_info *psoc6_info = bank->driver_priv;
644 int hr;
645
646 if (psoc6_info->is_probed)
647 hr = ERROR_OK;
648 else
649 hr = psoc6_probe(bank);
650
651 return hr;
652 }
653
654 /** ***********************************************************************************************
655 * @brief Erases single sector (256k) on target device
656 * @param bank current flash bank
657 * @param wa working area for SROM API parameters
658 * @param addr starting address of the sector
659 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
660 *************************************************************************************************/
661 static int psoc6_erase_sector(struct flash_bank *bank, struct working_area *wa, uint32_t addr)
662 {
663 struct target *target = bank->target;
664
665 LOG_DEBUG("Erasing SECTOR @%08X", addr);
666
667 int hr = target_write_u32(target, wa->address, SROMAPI_ERASESECTOR_REQ);
668 if (hr != ERROR_OK)
669 return hr;
670
671 hr = target_write_u32(target, wa->address + 0x04, addr);
672 if (hr != ERROR_OK)
673 return hr;
674
675 uint32_t data_out;
676 hr = call_sromapi(target, SROMAPI_ERASESECTOR_REQ, wa->address, &data_out);
677 if (hr != ERROR_OK)
678 LOG_ERROR("SECTOR @%08X not erased!", addr);
679
680 return hr;
681 }
682
683 /** ***********************************************************************************************
684 * @brief Erases single row (512b) on target device
685 * @param bank current flash bank
686 * @param wa working area for SROM API parameters
687 * @param addr starting address of the flash row
688 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
689 *************************************************************************************************/
690 static int psoc6_erase_row(struct flash_bank *bank, struct working_area *wa, uint32_t addr)
691 {
692 struct target *target = bank->target;
693
694 LOG_DEBUG("Erasing ROW @%08X", addr);
695
696 int hr = target_write_u32(target, wa->address, SROMAPI_ERASEROW_REQ);
697 if (hr != ERROR_OK)
698 return hr;
699
700 hr = target_write_u32(target, wa->address + 0x04, addr);
701 if (hr != ERROR_OK)
702 return hr;
703
704 uint32_t data_out;
705 hr = call_sromapi(target, SROMAPI_ERASEROW_REQ, wa->address, &data_out);
706 if (hr != ERROR_OK)
707 LOG_ERROR("ROW @%08X not erased!", addr);
708
709 return hr;
710 }
711
712 /** ***********************************************************************************************
713 * @brief Performs Erase operation. Function will try to use biggest erase block possible to
714 * speedup the operation.
715 *
716 * @param bank current flash bank
717 * @param first first sector to erase
718 * @param last last sector to erase
719 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
720 *************************************************************************************************/
721 static int psoc6_erase(struct flash_bank *bank, unsigned int first,
722 unsigned int last)
723 {
724 struct target *target = bank->target;
725 struct psoc6_target_info *psoc6_info = bank->driver_priv;
726 const uint32_t sector_size = is_wflash_bank(bank) ? WFLASH_SECTOR_SIZE : MFLASH_SECTOR_SIZE;
727
728 int hr;
729 struct working_area *wa;
730
731 if (is_sflash_bank(bank)) {
732 LOG_INFO("Erase operation on Supervisory Flash is not required, skipping");
733 return ERROR_OK;
734 }
735
736 hr = sromalgo_prepare(target);
737 if (hr != ERROR_OK)
738 goto exit;
739
740 hr = target_alloc_working_area(target, psoc6_info->row_sz + 32, &wa);
741 if (hr != ERROR_OK)
742 goto exit;
743
744 /* Number of rows in single sector */
745 const unsigned int rows_in_sector = sector_size / psoc6_info->row_sz;
746
747 while (last >= first) {
748 /* Erase Sector if we are on sector boundary and erase size covers whole sector */
749 if ((first % rows_in_sector) == 0 &&
750 (last - first + 1) >= rows_in_sector) {
751 hr = psoc6_erase_sector(bank, wa, bank->base + first * psoc6_info->row_sz);
752 if (hr != ERROR_OK)
753 goto exit_free_wa;
754
755 for (unsigned int i = first; i < first + rows_in_sector; i++)
756 bank->sectors[i].is_erased = 1;
757
758 first += rows_in_sector;
759 } else {
760 /* Perform Row Erase otherwise */
761 hr = psoc6_erase_row(bank, wa, bank->base + first * psoc6_info->row_sz);
762 if (hr != ERROR_OK)
763 goto exit_free_wa;
764
765 bank->sectors[first].is_erased = 1;
766 first += 1;
767 }
768 }
769
770 exit_free_wa:
771 target_free_working_area(target, wa);
772 exit:
773 sromalgo_release(target);
774 return hr;
775 }
776
777 /** ***********************************************************************************************
778 * @brief Programs single Flash Row
779 * @param bank current flash bank
780 * @param addr address of the flash row
781 * @param buffer pointer to the buffer with data
782 * @param is_sflash true if current flash bank belongs to Supervisory Flash
783 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
784 *************************************************************************************************/
785 static int psoc6_program_row(struct flash_bank *bank,
786 uint32_t addr,
787 const uint8_t *buffer,
788 bool is_sflash)
789 {
790 struct target *target = bank->target;
791 struct psoc6_target_info *psoc6_info = bank->driver_priv;
792 struct working_area *wa;
793 const uint32_t sromapi_req = is_sflash ? SROMAPI_WRITEROW_REQ : SROMAPI_PROGRAMROW_REQ;
794 uint32_t data_out;
795 int hr = ERROR_OK;
796
797 LOG_DEBUG("Programming ROW @%08X", addr);
798
799 hr = target_alloc_working_area(target, psoc6_info->row_sz + 32, &wa);
800 if (hr != ERROR_OK)
801 goto exit;
802
803 hr = target_write_u32(target, wa->address, sromapi_req);
804 if (hr != ERROR_OK)
805 goto exit_free_wa;
806
807 hr = target_write_u32(target,
808 wa->address + 0x04,
809 0x106);
810 if (hr != ERROR_OK)
811 goto exit_free_wa;
812
813 hr = target_write_u32(target, wa->address + 0x08, addr);
814 if (hr != ERROR_OK)
815 goto exit_free_wa;
816
817 hr = target_write_u32(target, wa->address + 0x0C, wa->address + 0x10);
818 if (hr != ERROR_OK)
819 goto exit_free_wa;
820
821 hr = target_write_buffer(target, wa->address + 0x10, psoc6_info->row_sz, buffer);
822 if (hr != ERROR_OK)
823 goto exit_free_wa;
824
825 hr = call_sromapi(target, sromapi_req, wa->address, &data_out);
826
827 exit_free_wa:
828 target_free_working_area(target, wa);
829
830 exit:
831 return hr;
832 }
833
834 /** ***********************************************************************************************
835 * @brief Performs Program operation
836 * @param bank current flash bank
837 * @param buffer pointer to the buffer with data
838 * @param offset starting offset in falsh bank
839 * @param count number of bytes in buffer
840 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
841 *************************************************************************************************/
842 static int psoc6_program(struct flash_bank *bank,
843 const uint8_t *buffer,
844 uint32_t offset,
845 uint32_t count)
846 {
847 struct target *target = bank->target;
848 struct psoc6_target_info *psoc6_info = bank->driver_priv;
849 const bool is_sflash = is_sflash_bank(bank);
850 int hr;
851
852 uint8_t page_buf[psoc6_info->row_sz];
853
854 hr = sromalgo_prepare(target);
855 if (hr != ERROR_OK)
856 goto exit;
857
858 while (count) {
859 uint32_t row_offset = offset % psoc6_info->row_sz;
860 uint32_t aligned_addr = bank->base + offset - row_offset;
861 uint32_t row_bytes = MIN(psoc6_info->row_sz - row_offset, count);
862
863 memset(page_buf, 0, sizeof(page_buf));
864 memcpy(&page_buf[row_offset], buffer, row_bytes);
865
866 hr = psoc6_program_row(bank, aligned_addr, page_buf, is_sflash);
867 if (hr != ERROR_OK) {
868 LOG_ERROR("Failed to program Flash at address 0x%08X", aligned_addr);
869 goto exit;
870 }
871
872 buffer += row_bytes;
873 offset += row_bytes;
874 count -= row_bytes;
875 }
876
877 exit:
878 sromalgo_release(target);
879 return hr;
880 }
881
882 /** ***********************************************************************************************
883 * @brief Performs Mass Erase operation
884 * @param bank flash bank index to erase
885 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
886 *************************************************************************************************/
887 COMMAND_HANDLER(psoc6_handle_mass_erase_command)
888 {
889 if (CMD_ARGC != 1)
890 return ERROR_COMMAND_SYNTAX_ERROR;
891
892 struct flash_bank *bank;
893 int hr = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
894 if (hr != ERROR_OK)
895 return hr;
896
897 hr = psoc6_erase(bank, 0, bank->num_sectors - 1);
898
899 return hr;
900 }
901
902 /** ***********************************************************************************************
903 * @brief Simulates broken Vector Catch
904 * Function will try to determine entry point of user application. If it succeeds it will set HW
905 * breakpoint at that address, issue SW Reset and remove the breakpoint afterwards.
906 * In case of CM0, SYSRESETREQ is used. This allows to reset all peripherals. Boot code will
907 * reset CM4 anyway, so using SYSRESETREQ is safe here.
908 * In case of CM4, VECTRESET is used instead of SYSRESETREQ to not disturb CM0 core.
909 *
910 * @param target current target
911 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
912 *************************************************************************************************/
913 int handle_reset_halt(struct target *target)
914 {
915 int hr;
916 uint32_t reset_addr;
917 bool is_cm0 = (target->coreid == 0);
918
919 /* Halt target device */
920 if (target->state != TARGET_HALTED) {
921 hr = target_halt(target);
922 if (hr != ERROR_OK)
923 return hr;
924
925 target_wait_state(target, TARGET_HALTED, IPC_TIMEOUT_MS);
926 if (hr != ERROR_OK)
927 return hr;
928 }
929
930 /* Read Vector Offset register */
931 uint32_t vt_base;
932 const uint32_t vt_offset_reg = is_cm0 ? 0x402102B0 : 0x402102C0;
933 hr = target_read_u32(target, vt_offset_reg, &vt_base);
934 if (hr != ERROR_OK)
935 return ERROR_OK;
936
937 /* Invalid value means flash is empty */
938 vt_base &= 0xFFFFFF00;
939 if ((vt_base == 0) || (vt_base == 0xFFFFFF00))
940 return ERROR_OK;
941
942 /* Read Reset Vector value*/
943 hr = target_read_u32(target, vt_base + 4, &reset_addr);
944 if (hr != ERROR_OK)
945 return hr;
946
947 /* Invalid value means flash is empty */
948 if ((reset_addr == 0) || (reset_addr == 0xFFFFFF00))
949 return ERROR_OK;
950
951
952 /* Set breakpoint at User Application entry point */
953 hr = breakpoint_add(target, reset_addr, 2, BKPT_HARD);
954 if (hr != ERROR_OK)
955 return hr;
956
957 const struct armv7m_common *cm = target_to_armv7m(target);
958
959 /* PSoC6 reboots immediatelly after issuing SYSRESETREQ / VECTRESET
960 * this disables SWD/JTAG pins momentarily and may break communication
961 * Ignoring return value of mem_ap_write_atomic_u32 seems to be ok here */
962 if (is_cm0) {
963 /* Reset the CM0 by asserting SYSRESETREQ. This will also reset CM4 */
964 LOG_INFO("psoc6.cm0: bkpt @0x%08X, issuing SYSRESETREQ", reset_addr);
965 mem_ap_write_atomic_u32(cm->debug_ap, NVIC_AIRCR,
966 AIRCR_VECTKEY | AIRCR_SYSRESETREQ);
967 } else {
968 LOG_INFO("psoc6.cm4: bkpt @0x%08X, issuing VECTRESET", reset_addr);
969 mem_ap_write_atomic_u32(cm->debug_ap, NVIC_AIRCR,
970 AIRCR_VECTKEY | AIRCR_VECTRESET);
971 }
972
973 /* Wait 100ms for bootcode and reinitialize DAP */
974 usleep(100000);
975 dap_dp_init(cm->debug_ap->dap);
976
977 target_wait_state(target, TARGET_HALTED, IPC_TIMEOUT_MS);
978
979 /* Remove the break point */
980 breakpoint_remove(target, reset_addr);
981
982 return ERROR_OK;
983 }
984
985 /** ***********************************************************************************************
986 * @brief Simulates broken Vector Catch
987 * Function will try to determine entry point of user application. If it succeeds it will set HW
988 * breakpoint at that address, issue SW Reset and remove the breakpoint afterwards.
989 * In case of CM0, SYSRESETREQ is used. This allows to reset all peripherals. Boot code will
990 * reset CM4 anyway, so using SYSRESETREQ is safe here.
991 * In case of CM4, VECTRESET is used instead of SYSRESETREQ to not disturb CM0 core.
992 *
993 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
994 *************************************************************************************************/
995 COMMAND_HANDLER(psoc6_handle_reset_halt)
996 {
997 if (CMD_ARGC)
998 return ERROR_COMMAND_SYNTAX_ERROR;
999
1000 struct target *target = get_current_target(CMD_CTX);
1001 return handle_reset_halt(target);
1002 }
1003
1004 FLASH_BANK_COMMAND_HANDLER(psoc6_flash_bank_command)
1005 {
1006 struct psoc6_target_info *psoc6_info;
1007 int hr = ERROR_OK;
1008
1009 if (CMD_ARGC < 6)
1010 hr = ERROR_COMMAND_SYNTAX_ERROR;
1011 else {
1012 psoc6_info = calloc(1, sizeof(struct psoc6_target_info));
1013 psoc6_info->is_probed = false;
1014 bank->driver_priv = psoc6_info;
1015 }
1016 return hr;
1017 }
1018
1019 static const struct command_registration psoc6_exec_command_handlers[] = {
1020 {
1021 .name = "mass_erase",
1022 .handler = psoc6_handle_mass_erase_command,
1023 .mode = COMMAND_EXEC,
1024 .usage = "bank",
1025 .help = "Erases entire Main Flash",
1026 },
1027 {
1028 .name = "reset_halt",
1029 .handler = psoc6_handle_reset_halt,
1030 .mode = COMMAND_EXEC,
1031 .usage = NULL,
1032 .help = "Tries to simulate broken Vector Catch",
1033 },
1034 COMMAND_REGISTRATION_DONE
1035 };
1036
1037 static const struct command_registration psoc6_command_handlers[] = {
1038 {
1039 .name = "psoc6",
1040 .mode = COMMAND_ANY,
1041 .help = "PSoC 6 flash command group",
1042 .usage = "",
1043 .chain = psoc6_exec_command_handlers,
1044 },
1045 COMMAND_REGISTRATION_DONE
1046 };
1047
1048 const struct flash_driver psoc6_flash = {
1049 .name = "psoc6",
1050 .commands = psoc6_command_handlers,
1051 .flash_bank_command = psoc6_flash_bank_command,
1052 .erase = psoc6_erase,
1053 .protect = psoc6_protect,
1054 .write = psoc6_program,
1055 .read = default_flash_read,
1056 .probe = psoc6_probe,
1057 .auto_probe = psoc6_auto_probe,
1058 .erase_check = default_flash_blank_check,
1059 .protect_check = psoc6_protect_check,
1060 .info = psoc6_get_info,
1061 .free_driver_priv = default_flash_free_driver_priv,
1062 };
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