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flash/psoc6: initialize usage field
[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 "helper/time_support.h"
28 #include "target/arm_adi_v5.h"
29 #include "target/target.h"
30 #include "target/cortex_m.h"
31 #include "target/breakpoints.h"
32 #include "target/target_type.h"
33 #include "target/algorithm.h"
34
35 /**************************************************************************************************
36 * PSoC6 device definitions
37 *************************************************************************************************/
38 #define MFLASH_SECTOR_SIZE (256u * 1024u)
39 #define WFLASH_SECTOR_SIZE (32u * 1024u)
40
41 #define MEM_BASE_MFLASH 0x10000000u
42 #define MEM_BASE_WFLASH 0x14000000u
43 #define MEM_WFLASH_SIZE 32768u
44 #define MEM_BASE_SFLASH 0x16000000u
45 #define RAM_STACK_WA_SIZE 2048u
46 #define PSOC6_SPCIF_GEOMETRY 0x4025F00Cu
47
48 #define PROTECTION_UNKNOWN 0x00u
49 #define PROTECTION_VIRGIN 0x01u
50 #define PROTECTION_NORMAL 0x02u
51 #define PROTECTION_SECURE 0x03u
52 #define PROTECTION_DEAD 0x04u
53
54 #define MEM_BASE_IPC 0x40230000u
55 #define IPC_STRUCT_SIZE 0x20u
56 #define MEM_IPC(n) (MEM_BASE_IPC + (n) * IPC_STRUCT_SIZE)
57 #define MEM_IPC_ACQUIRE(n) (MEM_IPC(n) + 0x00u)
58 #define MEM_IPC_NOTIFY(n) (MEM_IPC(n) + 0x08u)
59 #define MEM_IPC_DATA(n) (MEM_IPC(n) + 0x0Cu)
60 #define MEM_IPC_LOCK_STATUS(n) (MEM_IPC(n) + 0x10u)
61
62 #define MEM_BASE_IPC_INTR 0x40231000u
63 #define IPC_INTR_STRUCT_SIZE 0x20u
64 #define MEM_IPC_INTR(n) (MEM_BASE_IPC_INTR + (n) * IPC_INTR_STRUCT_SIZE)
65 #define MEM_IPC_INTR_MASK(n) (MEM_IPC_INTR(n) + 0x08u)
66 #define IPC_ACQUIRE_SUCCESS_MSK 0x80000000u
67 #define IPC_LOCK_ACQUIRED_MSK 0x80000000u
68
69 #define IPC_ID 2u
70 #define IPC_INTR_ID 0u
71 #define IPC_TIMEOUT_MS 1000
72
73 #define SROMAPI_SIID_REQ 0x00000001u
74 #define SROMAPI_SIID_REQ_FAMILY_REVISION (SROMAPI_SIID_REQ | 0x000u)
75 #define SROMAPI_SIID_REQ_SIID_PROTECTION (SROMAPI_SIID_REQ | 0x100u)
76 #define SROMAPI_WRITEROW_REQ 0x05000100u
77 #define SROMAPI_PROGRAMROW_REQ 0x06000100u
78 #define SROMAPI_ERASESECTOR_REQ 0x14000100u
79 #define SROMAPI_ERASEALL_REQ 0x0A000100u
80 #define SROMAPI_ERASEROW_REQ 0x1C000100u
81
82 #define SROMAPI_STATUS_MSK 0xF0000000u
83 #define SROMAPI_STAT_SUCCESS 0xA0000000u
84 #define SROMAPI_DATA_LOCATION_MSK 0x00000001u
85 #define SROMAPI_CALL_TIMEOUT_MS 1500
86
87 struct psoc6_target_info {
88 uint32_t silicon_id;
89 uint8_t protection;
90 uint32_t main_flash_sz;
91 uint32_t row_sz;
92 bool is_probed;
93 };
94
95 struct timeout {
96 int64_t start_time;
97 long timeout_ms;
98 };
99
100 struct row_region {
101 uint32_t addr;
102 size_t size;
103 };
104
105 static const struct row_region safe_sflash_regions[] = {
106 {0x16000800, 0x800}, /* SFLASH: User Data */
107 {0x16001A00, 0x200}, /* SFLASH: NAR */
108 {0x16005A00, 0xC00}, /* SFLASH: Public Key */
109 {0x16007C00, 0x400}, /* SFLASH: TOC2 */
110 };
111
112 #define SFLASH_NUM_REGIONS ARRAY_SIZE(safe_sflash_regions)
113
114 static struct working_area *g_stack_area;
115 static struct armv7m_algorithm g_armv7m_info;
116
117 /** ***********************************************************************************************
118 * @brief Initializes `struct timeout` structure with given timeout value
119 * @param to pointer to `struct timeout` structure
120 * @param timeout_ms timeout, in milliseconds
121 *************************************************************************************************/
122 static void timeout_init(struct timeout *to, long timeout_ms)
123 {
124 to->start_time = timeval_ms();
125 to->timeout_ms = timeout_ms;
126 }
127
128 /** ***********************************************************************************************
129 * @brief Returns true if given `struct timeout` structure has expired
130 * @param to pointer to `struct timeout` structure
131 * @return true if timeout expired
132 *************************************************************************************************/
133 static bool timeout_expired(struct timeout *to)
134 {
135 return (timeval_ms() - to->start_time) > to->timeout_ms;
136 }
137
138 /** ***********************************************************************************************
139 * @brief Starts pseudo flash algorithm and leaves it running. Function allocates working area for
140 * algorithm code and CPU stack, adjusts stack pointer, uploads and starts the algorithm.
141 * Algorithm (a basic infinite loop) runs asynchronously while driver performs Flash operations.
142 *
143 * @param target target for the algorithm
144 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
145 *************************************************************************************************/
146 static int sromalgo_prepare(struct target *target)
147 {
148 int hr;
149
150 /* Initialize Vector Table Offset register (in case FW modified it) */
151 hr = target_write_u32(target, 0xE000ED08, 0x00000000);
152 if (hr != ERROR_OK)
153 return hr;
154
155 /* Allocate Working Area for Stack and Flash algorithm */
156 hr = target_alloc_working_area(target, RAM_STACK_WA_SIZE, &g_stack_area);
157 if (hr != ERROR_OK)
158 return hr;
159
160 g_armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
161 g_armv7m_info.core_mode = ARM_MODE_THREAD;
162
163 struct reg_param reg_params;
164 init_reg_param(&reg_params, "sp", 32, PARAM_OUT);
165 buf_set_u32(reg_params.value, 0, 32, g_stack_area->address + g_stack_area->size);
166
167 /* Write basic infinite loop algorithm to target RAM */
168 hr = target_write_u32(target, g_stack_area->address, 0xFEE7FEE7);
169 if (hr != ERROR_OK)
170 goto destroy_rp_free_wa;
171
172 hr = target_start_algorithm(target, 0, NULL, 1, &reg_params, g_stack_area->address,
173 0, &g_armv7m_info);
174 if (hr != ERROR_OK)
175 goto destroy_rp_free_wa;
176
177 destroy_reg_param(&reg_params);
178
179 return hr;
180
181 destroy_rp_free_wa:
182 /* Something went wrong, do some cleanup */
183 destroy_reg_param(&reg_params);
184
185 if (g_stack_area) {
186 target_free_working_area(target, g_stack_area);
187 g_stack_area = NULL;
188 }
189
190 return hr;
191 }
192
193 /** ***********************************************************************************************
194 * @brief Stops running flash algorithm and releases associated resources.
195 * This function is also used for cleanup in case of errors so g_stack_area may be NULL.
196 * These cases have to be handled gracefully.
197 *
198 * @param target current target
199 *************************************************************************************************/
200 static void sromalgo_release(struct target *target)
201 {
202 int hr = ERROR_OK;
203
204 if (g_stack_area) {
205 /* Stop flash algorithm if it is running */
206 if (target->running_alg) {
207 hr = target_halt(target);
208 if (hr != ERROR_OK)
209 goto exit_free_wa;
210
211 hr = target_wait_algorithm(target, 0, NULL, 0, NULL, 0,
212 IPC_TIMEOUT_MS, &g_armv7m_info);
213 if (hr != ERROR_OK)
214 goto exit_free_wa;
215 }
216
217 exit_free_wa:
218 /* Free Stack/Flash algorithm working area */
219 target_free_working_area(target, g_stack_area);
220 g_stack_area = NULL;
221 }
222 }
223
224 /** ***********************************************************************************************
225 * @brief Waits for expected IPC lock status. PSoC6 uses IPC structures for inter-core
226 * communication. Same IPCs are used to invoke SROM API. IPC structure must be locked prior to
227 * invoking any SROM API. This ensures nothing else in the system will use same IPC thus corrupting
228 * our data. Locking is performed by ipc_acquire(), this function ensures that IPC is actually
229 * in expected state
230 *
231 * @param target current target
232 * @param ipc_id IPC index to poll. IPC #2 is dedicated for DAP access
233 * @param lock_expected expected lock status
234 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
235 *************************************************************************************************/
236 static int ipc_poll_lock_stat(struct target *target, uint32_t ipc_id, bool lock_expected)
237 {
238 int hr;
239 uint32_t reg_val;
240
241 struct timeout to;
242 timeout_init(&to, IPC_TIMEOUT_MS);
243
244 while (!timeout_expired(&to)) {
245 /* Process any server requests */
246 keep_alive();
247
248 /* Read IPC Lock status */
249 hr = target_read_u32(target, MEM_IPC_LOCK_STATUS(ipc_id), &reg_val);
250 if (hr != ERROR_OK) {
251 LOG_ERROR("Unable to read IPC Lock Status register");
252 return hr;
253 }
254
255 bool is_locked = (reg_val & IPC_LOCK_ACQUIRED_MSK) != 0;
256
257 if (lock_expected == is_locked)
258 return ERROR_OK;
259 }
260
261 if (target->coreid) {
262 LOG_WARNING("SROM API calls via CM4 target are supported on single-core PSoC6 devices only. "
263 "Please perform all Flash-related operations via CM0+ target on dual-core devices.");
264 }
265
266 LOG_ERROR("Timeout polling IPC Lock Status");
267 return ERROR_TARGET_TIMEOUT;
268 }
269
270 /** ***********************************************************************************************
271 * @brief Acquires IPC structure. PSoC6 uses IPC structures for inter-core communication.
272 * Same IPCs are used to invoke SROM API. IPC structure must be locked prior to invoking any SROM API.
273 * This ensures nothing else in the system will use same IPC thus corrupting our data.
274 * This function locks the IPC.
275 *
276 * @param target current target
277 * @param ipc_id ipc_id IPC index to acquire. IPC #2 is dedicated for DAP access
278 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
279 *************************************************************************************************/
280 static int ipc_acquire(struct target *target, char ipc_id)
281 {
282 int hr = ERROR_OK;
283 bool is_acquired = false;
284 uint32_t reg_val;
285
286 struct timeout to;
287 timeout_init(&to, IPC_TIMEOUT_MS);
288
289 while (!timeout_expired(&to)) {
290 keep_alive();
291
292 hr = target_write_u32(target, MEM_IPC_ACQUIRE(ipc_id), IPC_ACQUIRE_SUCCESS_MSK);
293 if (hr != ERROR_OK) {
294 LOG_ERROR("Unable to write to IPC Acquire register");
295 return hr;
296 }
297
298 /* Check if data is written on first step */
299 hr = target_read_u32(target, MEM_IPC_ACQUIRE(ipc_id), &reg_val);
300 if (hr != ERROR_OK) {
301 LOG_ERROR("Unable to read IPC Acquire register");
302 return hr;
303 }
304
305 is_acquired = (reg_val & IPC_ACQUIRE_SUCCESS_MSK) != 0;
306 if (is_acquired) {
307 /* If IPC structure is acquired, the lock status should be set */
308 hr = ipc_poll_lock_stat(target, ipc_id, true);
309 break;
310 }
311 }
312
313 if (!is_acquired)
314 LOG_ERROR("Timeout acquiring IPC structure");
315
316 return hr;
317 }
318
319 /** ***********************************************************************************************
320 * @brief Invokes SROM API functions which are responsible for Flash operations
321 *
322 * @param target current target
323 * @param req_and_params request id of the function to invoke
324 * @param working_area address of memory buffer in target's memory space for SROM API parameters
325 * @param data_out pointer to variable which will be populated with execution status
326 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
327 *************************************************************************************************/
328 static int call_sromapi(struct target *target,
329 uint32_t req_and_params,
330 uint32_t working_area,
331 uint32_t *data_out)
332 {
333 int hr;
334
335 bool is_data_in_ram = (req_and_params & SROMAPI_DATA_LOCATION_MSK) == 0;
336
337 hr = ipc_acquire(target, IPC_ID);
338 if (hr != ERROR_OK)
339 return hr;
340
341 if (is_data_in_ram)
342 hr = target_write_u32(target, MEM_IPC_DATA(IPC_ID), working_area);
343 else
344 hr = target_write_u32(target, MEM_IPC_DATA(IPC_ID), req_and_params);
345
346 if (hr != ERROR_OK)
347 return hr;
348
349 /* Enable notification interrupt of IPC_INTR_STRUCT0(CM0+) for IPC_STRUCT2 */
350 hr = target_write_u32(target, MEM_IPC_INTR_MASK(IPC_INTR_ID), 1u << (16 + IPC_ID));
351 if (hr != ERROR_OK)
352 return hr;
353
354 hr = target_write_u32(target, MEM_IPC_NOTIFY(IPC_ID), 1);
355 if (hr != ERROR_OK)
356 return hr;
357
358 /* Poll lock status */
359 hr = ipc_poll_lock_stat(target, IPC_ID, false);
360 if (hr != ERROR_OK)
361 return hr;
362
363 /* Poll Data byte */
364 if (is_data_in_ram)
365 hr = target_read_u32(target, working_area, data_out);
366 else
367 hr = target_read_u32(target, MEM_IPC_DATA(IPC_ID), data_out);
368
369 if (hr != ERROR_OK) {
370 LOG_ERROR("Error reading SROM API Status location");
371 return hr;
372 }
373
374 bool is_success = (*data_out & SROMAPI_STATUS_MSK) == SROMAPI_STAT_SUCCESS;
375 if (!is_success) {
376 LOG_ERROR("SROM API execution failed. Status: 0x%08" PRIX32, *data_out);
377 return ERROR_TARGET_FAILURE;
378 }
379
380 return ERROR_OK;
381 }
382
383 /** ***********************************************************************************************
384 * @brief Retrieves SiliconID and Protection status of the target device
385 * @param target current target
386 * @param si_id pointer to variable, will be populated with SiliconID
387 * @param protection pointer to variable, will be populated with protection status
388 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
389 *************************************************************************************************/
390 static int get_silicon_id(struct target *target, uint32_t *si_id, uint8_t *protection)
391 {
392 int hr;
393 uint32_t family_rev, siid_prot;
394
395 hr = sromalgo_prepare(target);
396 if (hr != ERROR_OK)
397 goto exit;
398
399 /* Read FamilyID and Revision */
400 hr = call_sromapi(target, SROMAPI_SIID_REQ_FAMILY_REVISION, 0, &family_rev);
401 if (hr != ERROR_OK)
402 goto exit;
403
404 /* Read SiliconID and Protection */
405 hr = call_sromapi(target, SROMAPI_SIID_REQ_SIID_PROTECTION, 0, &siid_prot);
406 if (hr != ERROR_OK)
407 goto exit;
408
409 *si_id = (siid_prot & 0x0000FFFF) << 16;
410 *si_id |= (family_rev & 0x00FF0000) >> 8;
411 *si_id |= (family_rev & 0x000000FF) >> 0;
412
413 *protection = (siid_prot & 0x000F0000) >> 0x10;
414
415 exit:
416 sromalgo_release(target);
417 return ERROR_OK;
418 }
419
420 /** ***********************************************************************************************
421 * @brief Translates Protection status to openocd-friendly boolean value
422 * @param bank current flash bank
423 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
424 *************************************************************************************************/
425 static int psoc6_protect_check(struct flash_bank *bank)
426 {
427 int is_protected;
428
429 struct psoc6_target_info *psoc6_info = bank->driver_priv;
430 int hr = get_silicon_id(bank->target, &psoc6_info->silicon_id, &psoc6_info->protection);
431 if (hr != ERROR_OK)
432 return hr;
433
434 switch (psoc6_info->protection) {
435 case PROTECTION_VIRGIN:
436 case PROTECTION_NORMAL:
437 is_protected = 0;
438 break;
439
440 case PROTECTION_UNKNOWN:
441 case PROTECTION_SECURE:
442 case PROTECTION_DEAD:
443 default:
444 is_protected = 1;
445 break;
446 }
447
448 for (unsigned int i = 0; i < bank->num_sectors; i++)
449 bank->sectors[i].is_protected = is_protected;
450
451 return ERROR_OK;
452 }
453
454 /** ***********************************************************************************************
455 * @brief Dummy function, Life Cycle transition is not currently supported
456 * @return ERROR_OK always
457 *************************************************************************************************/
458 static int psoc6_protect(struct flash_bank *bank, int set, unsigned int first,
459 unsigned int last)
460 {
461 (void)bank;
462 (void)set;
463 (void)first;
464 (void)last;
465
466 LOG_WARNING("Life Cycle transition for PSoC6 is not supported");
467 return ERROR_OK;
468 }
469
470 /** ***********************************************************************************************
471 * @brief Translates Protection status to string
472 * @param protection protection value
473 * @return pointer to const string describing protection status
474 *************************************************************************************************/
475 static const char *protection_to_str(uint8_t protection)
476 {
477 switch (protection) {
478 case PROTECTION_VIRGIN:
479 return "VIRGIN";
480 case PROTECTION_NORMAL:
481 return "NORMAL";
482 case PROTECTION_SECURE:
483 return "SECURE";
484 case PROTECTION_DEAD:
485 return "DEAD";
486 case PROTECTION_UNKNOWN:
487 default:
488 return "UNKNOWN";
489 }
490 }
491
492 /** ***********************************************************************************************
493 * @brief psoc6_get_info Displays human-readable information about acquired device
494 * @param bank current flash bank
495 * @param cmd pointer to command invocation instance
496 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
497 *************************************************************************************************/
498 static int psoc6_get_info(struct flash_bank *bank, struct command_invocation *cmd)
499 {
500 struct psoc6_target_info *psoc6_info = bank->driver_priv;
501
502 if (psoc6_info->is_probed == false)
503 return ERROR_FAIL;
504
505 int hr = get_silicon_id(bank->target, &psoc6_info->silicon_id, &psoc6_info->protection);
506 if (hr != ERROR_OK)
507 return hr;
508
509 command_print_sameline(cmd,
510 "PSoC6 Silicon ID: 0x%08" PRIX32 "\n"
511 "Protection: %s\n"
512 "Main Flash size: %" PRIu32 " kB\n"
513 "Work Flash size: 32 kB\n",
514 psoc6_info->silicon_id,
515 protection_to_str(psoc6_info->protection),
516 psoc6_info->main_flash_sz / 1024);
517
518 return ERROR_OK;
519 }
520
521 /** ***********************************************************************************************
522 * @brief Checks if given flash bank belongs to Supervisory Flash
523 * @param bank current flash bank
524 * @return true if flash bank belongs to Supervisory Flash
525 *************************************************************************************************/
526 static bool is_sflash_bank(struct flash_bank *bank)
527 {
528 for (size_t i = 0; i < SFLASH_NUM_REGIONS; i++) {
529 if (bank->base == safe_sflash_regions[i].addr)
530 return true;
531 }
532
533 return false;
534 }
535
536 /** ***********************************************************************************************
537 * @brief Checks if given flash bank belongs to Work Flash
538 * @param bank current flash bank
539 * @return true if flash bank belongs to Work Flash
540 *************************************************************************************************/
541 static inline bool is_wflash_bank(struct flash_bank *bank)
542 {
543 return (bank->base == MEM_BASE_WFLASH);
544 }
545
546 /** ***********************************************************************************************
547 * @brief Checks if given flash bank belongs to Main Flash
548 * @param bank current flash bank
549 * @return true if flash bank belongs to Main Flash
550 *************************************************************************************************/
551 static inline bool is_mflash_bank(struct flash_bank *bank)
552 {
553 return (bank->base == MEM_BASE_MFLASH);
554 }
555
556 /** ***********************************************************************************************
557 * @brief Probes the device and populates related data structures with target flash geometry data.
558 * This is done in non-intrusive way, no SROM API calls are involved so GDB can safely attach to a
559 * running target. Function assumes that size of Work Flash is 32kB (true for all current part numbers)
560 *
561 * @param bank current flash bank
562 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
563 *************************************************************************************************/
564 static int psoc6_probe(struct flash_bank *bank)
565 {
566 struct target *target = bank->target;
567 struct psoc6_target_info *psoc6_info = bank->driver_priv;
568
569 int hr = ERROR_OK;
570
571 /* Retrieve data from SPCIF_GEOMETRY */
572 uint32_t geom;
573 target_read_u32(target, PSOC6_SPCIF_GEOMETRY, &geom);
574 uint32_t row_sz_lg2 = (geom & 0xF0) >> 4;
575 uint32_t row_sz = (0x01 << row_sz_lg2);
576 uint32_t row_cnt = 1 + ((geom & 0x00FFFF00) >> 8);
577 uint32_t bank_cnt = 1 + ((geom & 0xFF000000) >> 24);
578
579 /* Calculate size of Main Flash*/
580 uint32_t flash_sz_bytes = bank_cnt * row_cnt * row_sz;
581
582 free(bank->sectors);
583 bank->sectors = NULL;
584
585 size_t bank_size = 0;
586
587 if (is_mflash_bank(bank))
588 bank_size = flash_sz_bytes;
589 else if (is_wflash_bank(bank))
590 bank_size = MEM_WFLASH_SIZE;
591 else if (is_sflash_bank(bank)) {
592 for (size_t i = 0; i < SFLASH_NUM_REGIONS; i++) {
593 if (safe_sflash_regions[i].addr == bank->base) {
594 bank_size = safe_sflash_regions[i].size;
595 break;
596 }
597 }
598 }
599
600 if (bank_size == 0) {
601 LOG_ERROR("Invalid Flash Bank base address in config file");
602 return ERROR_FLASH_BANK_INVALID;
603 }
604
605 unsigned int num_sectors = bank_size / row_sz;
606 bank->size = bank_size;
607 bank->chip_width = 4;
608 bank->bus_width = 4;
609 bank->erased_value = 0;
610 bank->default_padded_value = 0;
611
612 bank->num_sectors = num_sectors;
613 bank->sectors = calloc(num_sectors, sizeof(struct flash_sector));
614 for (unsigned int i = 0; i < num_sectors; i++) {
615 bank->sectors[i].size = row_sz;
616 bank->sectors[i].offset = i * row_sz;
617 bank->sectors[i].is_erased = -1;
618 bank->sectors[i].is_protected = -1;
619 }
620
621 psoc6_info->is_probed = true;
622 psoc6_info->main_flash_sz = flash_sz_bytes;
623 psoc6_info->row_sz = row_sz;
624
625 return hr;
626 }
627
628 /** ***********************************************************************************************
629 * @brief Probes target device only if it hasn't been probed yet
630 * @param bank current flash bank
631 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
632 *************************************************************************************************/
633 static int psoc6_auto_probe(struct flash_bank *bank)
634 {
635 struct psoc6_target_info *psoc6_info = bank->driver_priv;
636 int hr;
637
638 if (psoc6_info->is_probed)
639 hr = ERROR_OK;
640 else
641 hr = psoc6_probe(bank);
642
643 return hr;
644 }
645
646 /** ***********************************************************************************************
647 * @brief Erases single sector (256k) on target device
648 * @param bank current flash bank
649 * @param wa working area for SROM API parameters
650 * @param addr starting address of the sector
651 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
652 *************************************************************************************************/
653 static int psoc6_erase_sector(struct flash_bank *bank, struct working_area *wa, uint32_t addr)
654 {
655 struct target *target = bank->target;
656
657 LOG_DEBUG("Erasing SECTOR @%08" PRIX32, addr);
658
659 int hr = target_write_u32(target, wa->address, SROMAPI_ERASESECTOR_REQ);
660 if (hr != ERROR_OK)
661 return hr;
662
663 hr = target_write_u32(target, wa->address + 0x04, addr);
664 if (hr != ERROR_OK)
665 return hr;
666
667 uint32_t data_out;
668 hr = call_sromapi(target, SROMAPI_ERASESECTOR_REQ, wa->address, &data_out);
669 if (hr != ERROR_OK)
670 LOG_ERROR("SECTOR @%08" PRIX32 " not erased!", addr);
671
672 return hr;
673 }
674
675 /** ***********************************************************************************************
676 * @brief Erases single row (512b) on target device
677 * @param bank current flash bank
678 * @param wa working area for SROM API parameters
679 * @param addr starting address of the flash row
680 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
681 *************************************************************************************************/
682 static int psoc6_erase_row(struct flash_bank *bank, struct working_area *wa, uint32_t addr)
683 {
684 struct target *target = bank->target;
685
686 LOG_DEBUG("Erasing ROW @%08" PRIX32, addr);
687
688 int hr = target_write_u32(target, wa->address, SROMAPI_ERASEROW_REQ);
689 if (hr != ERROR_OK)
690 return hr;
691
692 hr = target_write_u32(target, wa->address + 0x04, addr);
693 if (hr != ERROR_OK)
694 return hr;
695
696 uint32_t data_out;
697 hr = call_sromapi(target, SROMAPI_ERASEROW_REQ, wa->address, &data_out);
698 if (hr != ERROR_OK)
699 LOG_ERROR("ROW @%08" PRIX32 " not erased!", addr);
700
701 return hr;
702 }
703
704 /** ***********************************************************************************************
705 * @brief Performs Erase operation. Function will try to use biggest erase block possible to
706 * speedup the operation.
707 *
708 * @param bank current flash bank
709 * @param first first sector to erase
710 * @param last last sector to erase
711 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
712 *************************************************************************************************/
713 static int psoc6_erase(struct flash_bank *bank, unsigned int first,
714 unsigned int last)
715 {
716 struct target *target = bank->target;
717 struct psoc6_target_info *psoc6_info = bank->driver_priv;
718 const uint32_t sector_size = is_wflash_bank(bank) ? WFLASH_SECTOR_SIZE : MFLASH_SECTOR_SIZE;
719
720 int hr;
721 struct working_area *wa;
722
723 if (is_sflash_bank(bank)) {
724 LOG_INFO("Erase operation on Supervisory Flash is not required, skipping");
725 return ERROR_OK;
726 }
727
728 hr = sromalgo_prepare(target);
729 if (hr != ERROR_OK)
730 goto exit;
731
732 hr = target_alloc_working_area(target, psoc6_info->row_sz + 32, &wa);
733 if (hr != ERROR_OK)
734 goto exit;
735
736 /* Number of rows in single sector */
737 const unsigned int rows_in_sector = sector_size / psoc6_info->row_sz;
738
739 while (last >= first) {
740 /* Erase Sector if we are on sector boundary and erase size covers whole sector */
741 if ((first % rows_in_sector) == 0 &&
742 (last - first + 1) >= rows_in_sector) {
743 hr = psoc6_erase_sector(bank, wa, bank->base + first * psoc6_info->row_sz);
744 if (hr != ERROR_OK)
745 goto exit_free_wa;
746
747 first += rows_in_sector;
748 } else {
749 /* Perform Row Erase otherwise */
750 hr = psoc6_erase_row(bank, wa, bank->base + first * psoc6_info->row_sz);
751 if (hr != ERROR_OK)
752 goto exit_free_wa;
753
754 first += 1;
755 }
756 }
757
758 exit_free_wa:
759 target_free_working_area(target, wa);
760 exit:
761 sromalgo_release(target);
762 return hr;
763 }
764
765 /** ***********************************************************************************************
766 * @brief Programs single Flash Row
767 * @param bank current flash bank
768 * @param addr address of the flash row
769 * @param buffer pointer to the buffer with data
770 * @param is_sflash true if current flash bank belongs to Supervisory Flash
771 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
772 *************************************************************************************************/
773 static int psoc6_program_row(struct flash_bank *bank,
774 uint32_t addr,
775 const uint8_t *buffer,
776 bool is_sflash)
777 {
778 struct target *target = bank->target;
779 struct psoc6_target_info *psoc6_info = bank->driver_priv;
780 struct working_area *wa;
781 const uint32_t sromapi_req = is_sflash ? SROMAPI_WRITEROW_REQ : SROMAPI_PROGRAMROW_REQ;
782 uint32_t data_out;
783 int hr = ERROR_OK;
784
785 LOG_DEBUG("Programming ROW @%08" PRIX32, addr);
786
787 hr = target_alloc_working_area(target, psoc6_info->row_sz + 32, &wa);
788 if (hr != ERROR_OK)
789 goto exit;
790
791 hr = target_write_u32(target, wa->address, sromapi_req);
792 if (hr != ERROR_OK)
793 goto exit_free_wa;
794
795 hr = target_write_u32(target,
796 wa->address + 0x04,
797 0x106);
798 if (hr != ERROR_OK)
799 goto exit_free_wa;
800
801 hr = target_write_u32(target, wa->address + 0x08, addr);
802 if (hr != ERROR_OK)
803 goto exit_free_wa;
804
805 hr = target_write_u32(target, wa->address + 0x0C, wa->address + 0x10);
806 if (hr != ERROR_OK)
807 goto exit_free_wa;
808
809 hr = target_write_buffer(target, wa->address + 0x10, psoc6_info->row_sz, buffer);
810 if (hr != ERROR_OK)
811 goto exit_free_wa;
812
813 hr = call_sromapi(target, sromapi_req, wa->address, &data_out);
814
815 exit_free_wa:
816 target_free_working_area(target, wa);
817
818 exit:
819 return hr;
820 }
821
822 /** ***********************************************************************************************
823 * @brief Performs Program operation
824 * @param bank current flash bank
825 * @param buffer pointer to the buffer with data
826 * @param offset starting offset in flash bank
827 * @param count number of bytes in buffer
828 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
829 *************************************************************************************************/
830 static int psoc6_program(struct flash_bank *bank,
831 const uint8_t *buffer,
832 uint32_t offset,
833 uint32_t count)
834 {
835 struct target *target = bank->target;
836 struct psoc6_target_info *psoc6_info = bank->driver_priv;
837 const bool is_sflash = is_sflash_bank(bank);
838 int hr;
839
840 uint8_t page_buf[psoc6_info->row_sz];
841
842 hr = sromalgo_prepare(target);
843 if (hr != ERROR_OK)
844 goto exit;
845
846 while (count) {
847 uint32_t row_offset = offset % psoc6_info->row_sz;
848 uint32_t aligned_addr = bank->base + offset - row_offset;
849 uint32_t row_bytes = MIN(psoc6_info->row_sz - row_offset, count);
850
851 memset(page_buf, 0, sizeof(page_buf));
852 memcpy(&page_buf[row_offset], buffer, row_bytes);
853
854 hr = psoc6_program_row(bank, aligned_addr, page_buf, is_sflash);
855 if (hr != ERROR_OK) {
856 LOG_ERROR("Failed to program Flash at address 0x%08" PRIX32, aligned_addr);
857 goto exit;
858 }
859
860 buffer += row_bytes;
861 offset += row_bytes;
862 count -= row_bytes;
863 }
864
865 exit:
866 sromalgo_release(target);
867 return hr;
868 }
869
870 /** ***********************************************************************************************
871 * @brief Performs Mass Erase operation
872 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
873 *************************************************************************************************/
874 COMMAND_HANDLER(psoc6_handle_mass_erase_command)
875 {
876 if (CMD_ARGC != 1)
877 return ERROR_COMMAND_SYNTAX_ERROR;
878
879 struct flash_bank *bank;
880 int hr = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
881 if (hr != ERROR_OK)
882 return hr;
883
884 hr = psoc6_erase(bank, 0, bank->num_sectors - 1);
885
886 return hr;
887 }
888
889 /** ***********************************************************************************************
890 * @brief Simulates broken Vector Catch
891 * Function will try to determine entry point of user application. If it succeeds it will set HW
892 * breakpoint at that address, issue SW Reset and remove the breakpoint afterwards.
893 * In case of CM0, SYSRESETREQ is used. This allows to reset all peripherals. Boot code will
894 * reset CM4 anyway, so using SYSRESETREQ is safe here.
895 * In case of CM4, VECTRESET is used instead of SYSRESETREQ to not disturb CM0 core.
896 *
897 * @param target current target
898 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
899 *************************************************************************************************/
900 static int handle_reset_halt(struct target *target)
901 {
902 int hr;
903 uint32_t reset_addr;
904 bool is_cm0 = (target->coreid == 0);
905
906 /* Halt target device */
907 if (target->state != TARGET_HALTED) {
908 hr = target_halt(target);
909 if (hr != ERROR_OK)
910 return hr;
911
912 target_wait_state(target, TARGET_HALTED, IPC_TIMEOUT_MS);
913 if (hr != ERROR_OK)
914 return hr;
915 }
916
917 /* Read Vector Offset register */
918 uint32_t vt_base;
919 const uint32_t vt_offset_reg = is_cm0 ? 0x402102B0 : 0x402102C0;
920 hr = target_read_u32(target, vt_offset_reg, &vt_base);
921 if (hr != ERROR_OK)
922 return ERROR_OK;
923
924 /* Invalid value means flash is empty */
925 vt_base &= 0xFFFFFF00;
926 if ((vt_base == 0) || (vt_base == 0xFFFFFF00))
927 return ERROR_OK;
928
929 /* Read Reset Vector value*/
930 hr = target_read_u32(target, vt_base + 4, &reset_addr);
931 if (hr != ERROR_OK)
932 return hr;
933
934 /* Invalid value means flash is empty */
935 if ((reset_addr == 0) || (reset_addr == 0xFFFFFF00))
936 return ERROR_OK;
937
938
939 /* Set breakpoint at User Application entry point */
940 hr = breakpoint_add(target, reset_addr, 2, BKPT_HARD);
941 if (hr != ERROR_OK)
942 return hr;
943
944 const struct armv7m_common *cm = target_to_armv7m(target);
945
946 /* PSoC6 reboots immediately after issuing SYSRESETREQ / VECTRESET
947 * this disables SWD/JTAG pins momentarily and may break communication
948 * Ignoring return value of mem_ap_write_atomic_u32 seems to be ok here */
949 if (is_cm0) {
950 /* Reset the CM0 by asserting SYSRESETREQ. This will also reset CM4 */
951 LOG_INFO("psoc6.cm0: bkpt @0x%08" PRIX32 ", issuing SYSRESETREQ", reset_addr);
952 mem_ap_write_atomic_u32(cm->debug_ap, NVIC_AIRCR,
953 AIRCR_VECTKEY | AIRCR_SYSRESETREQ);
954 } else {
955 LOG_INFO("psoc6.cm4: bkpt @0x%08" PRIX32 ", issuing VECTRESET", reset_addr);
956 mem_ap_write_atomic_u32(cm->debug_ap, NVIC_AIRCR,
957 AIRCR_VECTKEY | AIRCR_VECTRESET);
958 }
959
960 /* Wait 100ms for bootcode and reinitialize DAP */
961 usleep(100000);
962 dap_dp_init(cm->debug_ap->dap);
963
964 target_wait_state(target, TARGET_HALTED, IPC_TIMEOUT_MS);
965
966 /* Remove the break point */
967 breakpoint_remove(target, reset_addr);
968
969 return ERROR_OK;
970 }
971
972 /** ***********************************************************************************************
973 * @brief Simulates broken Vector Catch
974 * Function will try to determine entry point of user application. If it succeeds it will set HW
975 * breakpoint at that address, issue SW Reset and remove the breakpoint afterwards.
976 * In case of CM0, SYSRESETREQ is used. This allows to reset all peripherals. Boot code will
977 * reset CM4 anyway, so using SYSRESETREQ is safe here.
978 * In case of CM4, VECTRESET is used instead of SYSRESETREQ to not disturb CM0 core.
979 *
980 * @return ERROR_OK in case of success, ERROR_XXX code otherwise
981 *************************************************************************************************/
982 COMMAND_HANDLER(psoc6_handle_reset_halt)
983 {
984 if (CMD_ARGC)
985 return ERROR_COMMAND_SYNTAX_ERROR;
986
987 struct target *target = get_current_target(CMD_CTX);
988 return handle_reset_halt(target);
989 }
990
991 FLASH_BANK_COMMAND_HANDLER(psoc6_flash_bank_command)
992 {
993 struct psoc6_target_info *psoc6_info;
994 int hr = ERROR_OK;
995
996 if (CMD_ARGC < 6)
997 hr = ERROR_COMMAND_SYNTAX_ERROR;
998 else {
999 psoc6_info = calloc(1, sizeof(struct psoc6_target_info));
1000 psoc6_info->is_probed = false;
1001 bank->driver_priv = psoc6_info;
1002 }
1003 return hr;
1004 }
1005
1006 static const struct command_registration psoc6_exec_command_handlers[] = {
1007 {
1008 .name = "mass_erase",
1009 .handler = psoc6_handle_mass_erase_command,
1010 .mode = COMMAND_EXEC,
1011 .usage = "bank",
1012 .help = "Erases entire Main Flash",
1013 },
1014 {
1015 .name = "reset_halt",
1016 .handler = psoc6_handle_reset_halt,
1017 .mode = COMMAND_EXEC,
1018 .usage = "",
1019 .help = "Tries to simulate broken Vector Catch",
1020 },
1021 COMMAND_REGISTRATION_DONE
1022 };
1023
1024 static const struct command_registration psoc6_command_handlers[] = {
1025 {
1026 .name = "psoc6",
1027 .mode = COMMAND_ANY,
1028 .help = "PSoC 6 flash command group",
1029 .usage = "",
1030 .chain = psoc6_exec_command_handlers,
1031 },
1032 COMMAND_REGISTRATION_DONE
1033 };
1034
1035 const struct flash_driver psoc6_flash = {
1036 .name = "psoc6",
1037 .commands = psoc6_command_handlers,
1038 .flash_bank_command = psoc6_flash_bank_command,
1039 .erase = psoc6_erase,
1040 .protect = psoc6_protect,
1041 .write = psoc6_program,
1042 .read = default_flash_read,
1043 .probe = psoc6_probe,
1044 .auto_probe = psoc6_auto_probe,
1045 .erase_check = default_flash_blank_check,
1046 .protect_check = psoc6_protect_check,
1047 .info = psoc6_get_info,
1048 .free_driver_priv = default_flash_free_driver_priv,
1049 };
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