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36f0bfa903497caa5fc279f6d668e72a0b31b2ca
[openocd.git] / src / flash / nor / lpc2000.c
blob36f0bfa903497caa5fc279f6d668e72a0b31b2ca
1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
4 * *
5 * LPC1700 support Copyright (C) 2009 by Audrius Urmanavicius *
6 * didele.deze@gmail.com *
7 * *
8 * This program is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
12 * *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
17 * *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program; if not, write to the *
20 * Free Software Foundation, Inc., *
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
22 ***************************************************************************/
23
24 #ifdef HAVE_CONFIG_H
25 #include "config.h"
26 #endif
27
28 #include "imp.h"
29 #include <helper/binarybuffer.h>
30 #include <target/algorithm.h>
31 #include <target/arm_opcodes.h>
32 #include <target/armv7m.h>
33
34 /**
35 * @file
36 * flash programming support for NXP LPC17xx and LPC2xxx devices.
37 *
38 * @todo Provide a way to update CCLK after declaring the flash bank. The value which is correct after chip reset will
39 * rarely still work right after the clocks switch to use the PLL (e.g. 4MHz --> 100 MHz).
40 */
41 /*
42 * currently supported devices:
43 * variant 1 (lpc2000_v1):
44 * - 2104 | 5 | 6
45 * - 2114 | 9
46 * - 2124 | 9
47 * - 2194
48 * - 2212 | 4
49 * - 2292 | 4
50 *
51 * variant 2 (lpc2000_v2):
52 * - 213x
53 * - 214x
54 * - 2101 | 2 | 3
55 * - 2364 | 6 | 8
56 * - 2378
57 *
58 * lpc1700:
59 * - 175x
60 * - 176x (tested with LPC1768)
61 */
62
63 typedef enum {
64 lpc2000_v1,
65 lpc2000_v2,
66 lpc1700
67 } lpc2000_variant;
68
69 struct lpc2000_flash_bank {
70 lpc2000_variant variant;
71 uint32_t cclk;
72 int cmd51_dst_boundary;
73 int cmd51_can_256b;
74 int cmd51_can_8192b;
75 int calc_checksum;
76 uint32_t cmd51_max_buffer;
77 int checksum_vector;
78 };
79
80 enum lpc2000_status_codes {
81 LPC2000_CMD_SUCCESS = 0,
82 LPC2000_INVALID_COMMAND = 1,
83 LPC2000_SRC_ADDR_ERROR = 2,
84 LPC2000_DST_ADDR_ERROR = 3,
85 LPC2000_SRC_ADDR_NOT_MAPPED = 4,
86 LPC2000_DST_ADDR_NOT_MAPPED = 5,
87 LPC2000_COUNT_ERROR = 6,
88 LPC2000_INVALID_SECTOR = 7,
89 LPC2000_SECTOR_NOT_BLANK = 8,
90 LPC2000_SECTOR_NOT_PREPARED = 9,
91 LPC2000_COMPARE_ERROR = 10,
92 LPC2000_BUSY = 11,
93 LPC2000_PARAM_ERROR = 12,
94 LPC2000_ADDR_ERROR = 13,
95 LPC2000_ADDR_NOT_MAPPED = 14,
96 LPC2000_CMD_NOT_LOCKED = 15,
97 LPC2000_INVALID_CODE = 16,
98 LPC2000_INVALID_BAUD_RATE = 17,
99 LPC2000_INVALID_STOP_BIT = 18,
100 LPC2000_CRP_ENABLED = 19
101 };
102
103 static int lpc2000_build_sector_list(struct flash_bank *bank)
104 {
105 struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
106 uint32_t offset = 0;
107
108 /* default to a 4096 write buffer */
109 lpc2000_info->cmd51_max_buffer = 4096;
110
111 if (lpc2000_info->variant == lpc2000_v1) {
112 /* variant 1 has different layout for 128kb and 256kb flashes */
113 if (bank->size == 128 * 1024) {
114 bank->num_sectors = 16;
115 bank->sectors = malloc(sizeof(struct flash_sector) * 16);
116 for (int i = 0; i < 16; i++) {
117 bank->sectors[i].offset = offset;
118 bank->sectors[i].size = 8 * 1024;
119 offset += bank->sectors[i].size;
120 bank->sectors[i].is_erased = -1;
121 bank->sectors[i].is_protected = 1;
122 }
123 } else if (bank->size == 256 * 1024) {
124 bank->num_sectors = 18;
125 bank->sectors = malloc(sizeof(struct flash_sector) * 18);
126
127 for (int i = 0; i < 8; i++) {
128 bank->sectors[i].offset = offset;
129 bank->sectors[i].size = 8 * 1024;
130 offset += bank->sectors[i].size;
131 bank->sectors[i].is_erased = -1;
132 bank->sectors[i].is_protected = 1;
133 }
134 for (int i = 8; i < 10; i++) {
135 bank->sectors[i].offset = offset;
136 bank->sectors[i].size = 64 * 1024;
137 offset += bank->sectors[i].size;
138 bank->sectors[i].is_erased = -1;
139 bank->sectors[i].is_protected = 1;
140 }
141 for (int i = 10; i < 18; i++) {
142 bank->sectors[i].offset = offset;
143 bank->sectors[i].size = 8 * 1024;
144 offset += bank->sectors[i].size;
145 bank->sectors[i].is_erased = -1;
146 bank->sectors[i].is_protected = 1;
147 }
148 } else {
149 LOG_ERROR("BUG: unknown bank->size encountered");
150 exit(-1);
151 }
152 } else if (lpc2000_info->variant == lpc2000_v2) {
153 /* variant 2 has a uniform layout, only number of sectors differs */
154 switch (bank->size) {
155 case 4 * 1024:
156 lpc2000_info->cmd51_max_buffer = 1024;
157 bank->num_sectors = 1;
158 break;
159 case 8 * 1024:
160 lpc2000_info->cmd51_max_buffer = 1024;
161 bank->num_sectors = 2;
162 break;
163 case 16 * 1024:
164 bank->num_sectors = 4;
165 break;
166 case 32 * 1024:
167 bank->num_sectors = 8;
168 break;
169 case 64 * 1024:
170 bank->num_sectors = 9;
171 break;
172 case 128 * 1024:
173 bank->num_sectors = 11;
174 break;
175 case 256 * 1024:
176 bank->num_sectors = 15;
177 break;
178 case 500 * 1024:
179 bank->num_sectors = 27;
180 break;
181 case 512 * 1024:
182 case 504 * 1024:
183 bank->num_sectors = 28;
184 break;
185 default:
186 LOG_ERROR("BUG: unknown bank->size encountered");
187 exit(-1);
188 break;
189 }
190
191 bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
192
193 for (int i = 0; i < bank->num_sectors; i++) {
194 if (i < 8) {
195 bank->sectors[i].offset = offset;
196 bank->sectors[i].size = 4 * 1024;
197 offset += bank->sectors[i].size;
198 bank->sectors[i].is_erased = -1;
199 bank->sectors[i].is_protected = 1;
200 } else if (i < 22) {
201 bank->sectors[i].offset = offset;
202 bank->sectors[i].size = 32 * 1024;
203 offset += bank->sectors[i].size;
204 bank->sectors[i].is_erased = -1;
205 bank->sectors[i].is_protected = 1;
206 } else if (i < 28) {
207 bank->sectors[i].offset = offset;
208 bank->sectors[i].size = 4 * 1024;
209 offset += bank->sectors[i].size;
210 bank->sectors[i].is_erased = -1;
211 bank->sectors[i].is_protected = 1;
212 }
213 }
214 } else if (lpc2000_info->variant == lpc1700) {
215 switch (bank->size) {
216 case 32 * 1024:
217 bank->num_sectors = 8;
218 break;
219 case 64 * 1024:
220 bank->num_sectors = 16;
221 break;
222 case 128 * 1024:
223 bank->num_sectors = 18;
224 break;
225 case 256 * 1024:
226 bank->num_sectors = 22;
227 break;
228 case 512 * 1024:
229 bank->num_sectors = 30;
230 break;
231 default:
232 LOG_ERROR("BUG: unknown bank->size encountered");
233 exit(-1);
234 }
235
236 bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
237
238 for (int i = 0; i < bank->num_sectors; i++) {
239 bank->sectors[i].offset = offset;
240 /* sectors 0-15 are 4kB-sized, 16 and above are 32kB-sized for LPC17xx devices */
241 bank->sectors[i].size = (i < 16) ? 4 * 1024 : 32 * 1024;
242 offset += bank->sectors[i].size;
243 bank->sectors[i].is_erased = -1;
244 bank->sectors[i].is_protected = 1;
245 }
246 } else {
247 LOG_ERROR("BUG: unknown lpc2000_info->variant encountered");
248 exit(-1);
249 }
250
251 return ERROR_OK;
252 }
253
254 /* this function allocates and initializes working area used for IAP algorithm
255 * uses 180 bytes working area
256 * 0x0 to 0x7: jump gate (BX to thumb state, b -2 to wait)
257 * 0x8 to 0x1f: command parameter table (1+5 words)
258 * 0x20 to 0x33: command result table (1+4 words)
259 * 0x34 to 0xb3: stack (only 128b needed)
260 */
261
262 static int lpc2000_iap_working_area_init(struct flash_bank *bank, struct working_area **iap_working_area)
263 {
264 struct target *target = bank->target;
265
266 if (target_alloc_working_area(target, 180, iap_working_area) != ERROR_OK) {
267 LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
268 return ERROR_FLASH_OPERATION_FAILED;
269 }
270
271 struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
272 uint8_t jump_gate[8];
273
274 /* write IAP code to working area */
275 switch (lpc2000_info->variant) {
276 case lpc1700:
277 target_buffer_set_u32(target, jump_gate, ARMV4_5_T_BX(12));
278 target_buffer_set_u32(target, jump_gate + 4, ARMV5_T_BKPT(0));
279 break;
280 case lpc2000_v1:
281 case lpc2000_v2:
282 target_buffer_set_u32(target, jump_gate, ARMV4_5_BX(12));
283 target_buffer_set_u32(target, jump_gate + 4, ARMV4_5_B(0xfffffe, 0));
284 break;
285 default:
286 LOG_ERROR("BUG: unknown lpc2000_info->variant encountered");
287 exit(-1);
288 }
289
290 int retval = target_write_memory(target, (*iap_working_area)->address, 4, 2, jump_gate);
291 if (retval != ERROR_OK)
292 LOG_ERROR("Write memory at address 0x%8.8" PRIx32 " failed (check work_area definition)",
293 (*iap_working_area)->address);
294
295 return retval;
296 }
297
298 /* call LPC1700/LPC2000 IAP function */
299
300 static int lpc2000_iap_call(struct flash_bank *bank, struct working_area *iap_working_area, int code,
301 uint32_t param_table[5], uint32_t result_table[4])
302 {
303 struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
304
305 struct arm_algorithm arm_algo; /* for LPC2000 */
306 struct armv7m_algorithm armv7m_info; /* for LPC1700 */
307 uint32_t iap_entry_point = 0; /* to make compiler happier */
308
309 switch (lpc2000_info->variant) {
310 case lpc1700:
311 armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
312 armv7m_info.core_mode = ARM_MODE_THREAD;
313 iap_entry_point = 0x1fff1ff1;
314 break;
315 case lpc2000_v1:
316 case lpc2000_v2:
317 arm_algo.common_magic = ARM_COMMON_MAGIC;
318 arm_algo.core_mode = ARM_MODE_SVC;
319 arm_algo.core_state = ARM_STATE_ARM;
320 iap_entry_point = 0x7ffffff1;
321 break;
322 default:
323 LOG_ERROR("BUG: unknown lpc2000->variant encountered");
324 exit(-1);
325 }
326
327 struct target *target = bank->target;
328 struct mem_param mem_params[2];
329
330 /* command parameter table */
331 init_mem_param(&mem_params[0], iap_working_area->address + 8, 6 * 4, PARAM_OUT);
332 target_buffer_set_u32(target, mem_params[0].value, code);
333 target_buffer_set_u32(target, mem_params[0].value + 0x04, param_table[0]);
334 target_buffer_set_u32(target, mem_params[0].value + 0x08, param_table[1]);
335 target_buffer_set_u32(target, mem_params[0].value + 0x0c, param_table[2]);
336 target_buffer_set_u32(target, mem_params[0].value + 0x10, param_table[3]);
337 target_buffer_set_u32(target, mem_params[0].value + 0x14, param_table[4]);
338
339 struct reg_param reg_params[5];
340
341 init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
342 buf_set_u32(reg_params[0].value, 0, 32, iap_working_area->address + 0x08);
343
344 /* command result table */
345 init_mem_param(&mem_params[1], iap_working_area->address + 0x20, 5 * 4, PARAM_IN);
346
347 init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
348 buf_set_u32(reg_params[1].value, 0, 32, iap_working_area->address + 0x20);
349
350 /* IAP entry point */
351 init_reg_param(&reg_params[2], "r12", 32, PARAM_OUT);
352 buf_set_u32(reg_params[2].value, 0, 32, iap_entry_point);
353
354 switch (lpc2000_info->variant) {
355 case lpc1700:
356 /* IAP stack */
357 init_reg_param(&reg_params[3], "sp", 32, PARAM_OUT);
358 buf_set_u32(reg_params[3].value, 0, 32, iap_working_area->address + 0xb4);
359
360 /* return address */
361 init_reg_param(&reg_params[4], "lr", 32, PARAM_OUT);
362 buf_set_u32(reg_params[4].value, 0, 32, (iap_working_area->address + 0x04) | 1);
363 /* bit0 of LR = 1 to return in Thumb mode */
364
365 target_run_algorithm(target, 2, mem_params, 5, reg_params, iap_working_area->address, 0, 10000,
366 &armv7m_info);
367 break;
368 case lpc2000_v1:
369 case lpc2000_v2:
370 /* IAP stack */
371 init_reg_param(&reg_params[3], "sp_svc", 32, PARAM_OUT);
372 buf_set_u32(reg_params[3].value, 0, 32, iap_working_area->address + 0xb4);
373
374 /* return address */
375 init_reg_param(&reg_params[4], "lr_svc", 32, PARAM_OUT);
376 buf_set_u32(reg_params[4].value, 0, 32, iap_working_area->address + 0x04);
377
378 target_run_algorithm(target, 2, mem_params, 5, reg_params, iap_working_area->address,
379 iap_working_area->address + 0x4, 10000, &arm_algo);
380 break;
381 default:
382 LOG_ERROR("BUG: unknown lpc2000->variant encountered");
383 exit(-1);
384 }
385
386 int status_code = target_buffer_get_u32(target, mem_params[1].value);
387 result_table[0] = target_buffer_get_u32(target, mem_params[1].value + 0x04);
388 result_table[1] = target_buffer_get_u32(target, mem_params[1].value + 0x08);
389 result_table[2] = target_buffer_get_u32(target, mem_params[1].value + 0x0c);
390 result_table[3] = target_buffer_get_u32(target, mem_params[1].value + 0x10);
391
392 LOG_DEBUG("IAP command = %i (0x%8.8" PRIx32 ", 0x%8.8" PRIx32 ", 0x%8.8" PRIx32 ", 0x%8.8" PRIx32 ", 0x%8.8" PRIx32
393 ") completed with result = %8.8" PRIx32,
394 code, param_table[0], param_table[1], param_table[2], param_table[3], param_table[4], status_code);
395
396 destroy_mem_param(&mem_params[0]);
397 destroy_mem_param(&mem_params[1]);
398
399 destroy_reg_param(&reg_params[0]);
400 destroy_reg_param(&reg_params[1]);
401 destroy_reg_param(&reg_params[2]);
402 destroy_reg_param(&reg_params[3]);
403 destroy_reg_param(&reg_params[4]);
404
405 return status_code;
406 }
407
408 static int lpc2000_iap_blank_check(struct flash_bank *bank, int first, int last)
409 {
410 if ((first < 0) || (last >= bank->num_sectors))
411 return ERROR_FLASH_SECTOR_INVALID;
412
413 uint32_t param_table[5] = {0};
414 uint32_t result_table[4];
415 struct working_area *iap_working_area;
416
417 int retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
418
419 if (retval != ERROR_OK)
420 return retval;
421
422 for (int i = first; i <= last && retval == ERROR_OK; i++) {
423 /* check single sector */
424 param_table[0] = param_table[1] = i;
425 int status_code = lpc2000_iap_call(bank, iap_working_area, 53, param_table, result_table);
426
427 switch (status_code) {
428 case ERROR_FLASH_OPERATION_FAILED:
429 retval = ERROR_FLASH_OPERATION_FAILED;
430 break;
431 case LPC2000_CMD_SUCCESS:
432 bank->sectors[i].is_erased = 1;
433 break;
434 case LPC2000_SECTOR_NOT_BLANK:
435 bank->sectors[i].is_erased = 0;
436 break;
437 case LPC2000_INVALID_SECTOR:
438 bank->sectors[i].is_erased = 0;
439 break;
440 case LPC2000_BUSY:
441 retval = ERROR_FLASH_BUSY;
442 break;
443 default:
444 LOG_ERROR("BUG: unknown LPC2000 status code %i", status_code);
445 exit(-1);
446 }
447 }
448
449 struct target *target = bank->target;
450 target_free_working_area(target, iap_working_area);
451
452 return retval;
453 }
454
455 /*
456 * flash bank lpc2000 <base> <size> 0 0 <target#> <lpc_variant> <cclk> [calc_checksum]
457 */
458 FLASH_BANK_COMMAND_HANDLER(lpc2000_flash_bank_command)
459 {
460 if (CMD_ARGC < 8)
461 return ERROR_COMMAND_SYNTAX_ERROR;
462
463 struct lpc2000_flash_bank *lpc2000_info = malloc(sizeof(struct lpc2000_flash_bank));
464 bank->driver_priv = lpc2000_info;
465
466 if (strcmp(CMD_ARGV[6], "lpc2000_v1") == 0) {
467 lpc2000_info->variant = lpc2000_v1;
468 lpc2000_info->cmd51_dst_boundary = 512;
469 lpc2000_info->cmd51_can_256b = 0;
470 lpc2000_info->cmd51_can_8192b = 1;
471 lpc2000_info->checksum_vector = 5;
472 } else if (strcmp(CMD_ARGV[6], "lpc2000_v2") == 0) {
473 lpc2000_info->variant = lpc2000_v2;
474 lpc2000_info->cmd51_dst_boundary = 256;
475 lpc2000_info->cmd51_can_256b = 1;
476 lpc2000_info->cmd51_can_8192b = 0;
477 lpc2000_info->checksum_vector = 5;
478 } else if (strcmp(CMD_ARGV[6], "lpc1700") == 0) {
479 lpc2000_info->variant = lpc1700;
480 lpc2000_info->cmd51_dst_boundary = 256;
481 lpc2000_info->cmd51_can_256b = 1;
482 lpc2000_info->cmd51_can_8192b = 0;
483 lpc2000_info->checksum_vector = 7;
484 } else {
485 LOG_ERROR("unknown LPC2000 variant: %s", CMD_ARGV[6]);
486 free(lpc2000_info);
487 return ERROR_FLASH_BANK_INVALID;
488 }
489
490 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[7], lpc2000_info->cclk);
491 lpc2000_info->calc_checksum = 0;
492 lpc2000_build_sector_list(bank);
493
494 if (CMD_ARGC >= 9) {
495 if (strcmp(CMD_ARGV[8], "calc_checksum") == 0)
496 lpc2000_info->calc_checksum = 1;
497 }
498
499 return ERROR_OK;
500 }
501
502 static int lpc2000_erase(struct flash_bank *bank, int first, int last)
503 {
504 if (bank->target->state != TARGET_HALTED) {
505 LOG_ERROR("Target not halted");
506 return ERROR_TARGET_NOT_HALTED;
507 }
508
509 struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
510 uint32_t param_table[5] = {0};
511
512 param_table[0] = first;
513 param_table[1] = last;
514 param_table[2] = lpc2000_info->cclk;
515
516 uint32_t result_table[4];
517 struct working_area *iap_working_area;
518
519 int retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
520
521 if (retval != ERROR_OK)
522 return retval;
523
524 /* Prepare sectors */
525 int status_code = lpc2000_iap_call(bank, iap_working_area, 50, param_table, result_table);
526 switch (status_code) {
527 case ERROR_FLASH_OPERATION_FAILED:
528 retval = ERROR_FLASH_OPERATION_FAILED;
529 break;
530 case LPC2000_CMD_SUCCESS:
531 break;
532 case LPC2000_INVALID_SECTOR:
533 retval = ERROR_FLASH_SECTOR_INVALID;
534 break;
535 default:
536 LOG_WARNING("lpc2000 prepare sectors returned %i", status_code);
537 retval = ERROR_FLASH_OPERATION_FAILED;
538 break;
539 }
540
541 if (retval == ERROR_OK) {
542 /* Erase sectors */
543 status_code = lpc2000_iap_call(bank, iap_working_area, 52, param_table, result_table);
544 switch (status_code) {
545 case ERROR_FLASH_OPERATION_FAILED:
546 retval = ERROR_FLASH_OPERATION_FAILED;
547 break;
548 case LPC2000_CMD_SUCCESS:
549 break;
550 case LPC2000_INVALID_SECTOR:
551 retval = ERROR_FLASH_SECTOR_INVALID;
552 break;
553 default:
554 LOG_WARNING("lpc2000 erase sectors returned %i", status_code);
555 retval = ERROR_FLASH_OPERATION_FAILED;
556 break;
557 }
558 }
559
560 struct target *target = bank->target;
561 target_free_working_area(target, iap_working_area);
562
563 return retval;
564 }
565
566 static int lpc2000_protect(struct flash_bank *bank, int set, int first, int last)
567 {
568 /* can't protect/unprotect on the lpc2000 */
569 return ERROR_OK;
570 }
571
572 static int lpc2000_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
573 {
574 struct target *target = bank->target;
575
576 if (bank->target->state != TARGET_HALTED) {
577 LOG_ERROR("Target not halted");
578 return ERROR_TARGET_NOT_HALTED;
579 }
580
581 if (offset + count > bank->size)
582 return ERROR_FLASH_DST_OUT_OF_BANK;
583
584 struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
585
586 uint32_t dst_min_alignment = lpc2000_info->cmd51_dst_boundary;
587
588 if (offset % dst_min_alignment) {
589 LOG_WARNING("offset 0x%" PRIx32 " breaks required alignment 0x%" PRIx32, offset, dst_min_alignment);
590 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
591 }
592
593 int first_sector = 0;
594 int last_sector = 0;
595
596 for (int i = 0; i < bank->num_sectors; i++) {
597 if (offset >= bank->sectors[i].offset)
598 first_sector = i;
599 if (offset + DIV_ROUND_UP(count, dst_min_alignment) * dst_min_alignment > bank->sectors[i].offset)
600 last_sector = i;
601 }
602
603 LOG_DEBUG("first_sector: %i, last_sector: %i", first_sector, last_sector);
604
605 /* check if exception vectors should be flashed */
606 if ((offset == 0) && (count >= 0x20) && lpc2000_info->calc_checksum) {
607 uint32_t checksum = 0;
608 for (int i = 0; i < 8; i++) {
609 LOG_DEBUG("Vector 0x%2.2x: 0x%8.8" PRIx32, i * 4, buf_get_u32(buffer + (i * 4), 0, 32));
610 if (i != lpc2000_info->checksum_vector)
611 checksum += buf_get_u32(buffer + (i * 4), 0, 32);
612 }
613 checksum = 0 - checksum;
614 LOG_DEBUG("checksum: 0x%8.8" PRIx32, checksum);
615
616 uint32_t original_value = buf_get_u32(buffer + (lpc2000_info->checksum_vector * 4), 0, 32);
617 if (original_value != checksum) {
618 LOG_WARNING("Verification will fail since checksum in image (0x%8.8" PRIx32 ") to be written to flash is "
619 "different from calculated vector checksum (0x%8.8" PRIx32 ").", original_value, checksum);
620 LOG_WARNING("To remove this warning modify build tools on developer PC to inject correct LPC vector "
621 "checksum.");
622 }
623
624 buf_set_u32(buffer + (lpc2000_info->checksum_vector * 4), 0, 32, checksum);
625 }
626
627 struct working_area *iap_working_area;
628
629 int retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
630
631 if (retval != ERROR_OK)
632 return retval;
633
634 struct working_area *download_area;
635
636 /* allocate a working area */
637 if (target_alloc_working_area(target, lpc2000_info->cmd51_max_buffer, &download_area) != ERROR_OK) {
638 LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
639 target_free_working_area(target, iap_working_area);
640 return ERROR_FLASH_OPERATION_FAILED;
641 }
642
643 uint32_t bytes_remaining = count;
644 uint32_t bytes_written = 0;
645 uint32_t param_table[5] = {0};
646 uint32_t result_table[4];
647
648 while (bytes_remaining > 0) {
649 uint32_t thisrun_bytes;
650 if (bytes_remaining >= lpc2000_info->cmd51_max_buffer)
651 thisrun_bytes = lpc2000_info->cmd51_max_buffer;
652 else if (bytes_remaining >= 1024)
653 thisrun_bytes = 1024;
654 else if ((bytes_remaining >= 512) || (!lpc2000_info->cmd51_can_256b))
655 thisrun_bytes = 512;
656 else
657 thisrun_bytes = 256;
658
659 /* Prepare sectors */
660 param_table[0] = first_sector;
661 param_table[1] = last_sector;
662 int status_code = lpc2000_iap_call(bank, iap_working_area, 50, param_table, result_table);
663 switch (status_code) {
664 case ERROR_FLASH_OPERATION_FAILED:
665 retval = ERROR_FLASH_OPERATION_FAILED;
666 break;
667 case LPC2000_CMD_SUCCESS:
668 break;
669 case LPC2000_INVALID_SECTOR:
670 retval = ERROR_FLASH_SECTOR_INVALID;
671 break;
672 default:
673 LOG_WARNING("lpc2000 prepare sectors returned %i", status_code);
674 retval = ERROR_FLASH_OPERATION_FAILED;
675 break;
676 }
677
678 /* Exit if error occured */
679 if (retval != ERROR_OK)
680 break;
681
682 if (bytes_remaining >= thisrun_bytes) {
683 retval = target_write_buffer(bank->target, download_area->address, thisrun_bytes, buffer + bytes_written);
684 if (retval != ERROR_OK) {
685 retval = ERROR_FLASH_OPERATION_FAILED;
686 break;
687 }
688 } else {
689 uint8_t *last_buffer = malloc(thisrun_bytes);
690 memcpy(last_buffer, buffer + bytes_written, bytes_remaining);
691 memset(last_buffer + bytes_remaining, 0xff, thisrun_bytes - bytes_remaining);
692 target_write_buffer(bank->target, download_area->address, thisrun_bytes, last_buffer);
693 free(last_buffer);
694 }
695
696 LOG_DEBUG("writing 0x%" PRIx32 " bytes to address 0x%" PRIx32, thisrun_bytes,
697 bank->base + offset + bytes_written);
698
699 /* Write data */
700 param_table[0] = bank->base + offset + bytes_written;
701 param_table[1] = download_area->address;
702 param_table[2] = thisrun_bytes;
703 param_table[3] = lpc2000_info->cclk;
704 status_code = lpc2000_iap_call(bank, iap_working_area, 51, param_table, result_table);
705 switch (status_code) {
706 case ERROR_FLASH_OPERATION_FAILED:
707 retval = ERROR_FLASH_OPERATION_FAILED;
708 break;
709 case LPC2000_CMD_SUCCESS:
710 break;
711 case LPC2000_INVALID_SECTOR:
712 retval = ERROR_FLASH_SECTOR_INVALID;
713 break;
714 default:
715 LOG_WARNING("lpc2000 returned %i", status_code);
716 retval = ERROR_FLASH_OPERATION_FAILED;
717 break;
718 }
719
720 /* Exit if error occured */
721 if (retval != ERROR_OK)
722 break;
723
724 if (bytes_remaining > thisrun_bytes)
725 bytes_remaining -= thisrun_bytes;
726 else
727 bytes_remaining = 0;
728 bytes_written += thisrun_bytes;
729 }
730
731 target_free_working_area(target, iap_working_area);
732 target_free_working_area(target, download_area);
733
734 return retval;
735 }
736
737 static int lpc2000_probe(struct flash_bank *bank)
738 {
739 /* we can't probe on an lpc2000 if this is an lpc2xxx, it has the configured flash */
740 return ERROR_OK;
741 }
742
743 static int lpc2000_erase_check(struct flash_bank *bank)
744 {
745 if (bank->target->state != TARGET_HALTED) {
746 LOG_ERROR("Target not halted");
747 return ERROR_TARGET_NOT_HALTED;
748 }
749
750 return lpc2000_iap_blank_check(bank, 0, bank->num_sectors - 1);
751 }
752
753 static int lpc2000_protect_check(struct flash_bank *bank)
754 {
755 /* sectors are always protected */
756 return ERROR_OK;
757 }
758
759 static int get_lpc2000_info(struct flash_bank *bank, char *buf, int buf_size)
760 {
761 struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
762
763 snprintf(buf, buf_size, "lpc2000 flash driver variant: %i, clk: %" PRIi32 "kHz", lpc2000_info->variant,
764 lpc2000_info->cclk);
765
766 return ERROR_OK;
767 }
768
769 COMMAND_HANDLER(lpc2000_handle_part_id_command)
770 {
771 if (CMD_ARGC < 1)
772 return ERROR_COMMAND_SYNTAX_ERROR;
773
774 struct flash_bank *bank;
775 int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
776 if (ERROR_OK != retval)
777 return retval;
778
779 if (bank->target->state != TARGET_HALTED) {
780 LOG_ERROR("Target not halted");
781 return ERROR_TARGET_NOT_HALTED;
782 }
783
784 uint32_t param_table[5] = {0};
785 uint32_t result_table[4];
786 struct working_area *iap_working_area;
787
788 retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
789
790 if (retval != ERROR_OK)
791 return retval;
792
793 int status_code = lpc2000_iap_call(bank, iap_working_area, 54, param_table, result_table);
794 if (status_code != 0x0) {
795 if (status_code == ERROR_FLASH_OPERATION_FAILED) {
796 command_print(CMD_CTX, "no sufficient working area specified, can't access LPC2000 IAP interface");
797 } else
798 command_print(CMD_CTX, "lpc2000 IAP returned status code %i", status_code);
799 } else
800 command_print(CMD_CTX, "lpc2000 part id: 0x%8.8" PRIx32, result_table[0]);
801
802 return retval;
803 }
804
805 static const struct command_registration lpc2000_exec_command_handlers[] = {
806 {
807 .name = "part_id",
808 .handler = lpc2000_handle_part_id_command,
809 .mode = COMMAND_EXEC,
810 .help = "print part id of lpc2000 flash bank <num>",
811 .usage = "<bank>",
812 },
813 COMMAND_REGISTRATION_DONE
814 };
815 static const struct command_registration lpc2000_command_handlers[] = {
816 {
817 .name = "lpc2000",
818 .mode = COMMAND_ANY,
819 .help = "lpc2000 flash command group",
820 .usage = "",
821 .chain = lpc2000_exec_command_handlers,
822 },
823 COMMAND_REGISTRATION_DONE
824 };
825
826 struct flash_driver lpc2000_flash = {
827 .name = "lpc2000",
828 .commands = lpc2000_command_handlers,
829 .flash_bank_command = lpc2000_flash_bank_command,
830 .erase = lpc2000_erase,
831 .protect = lpc2000_protect,
832 .write = lpc2000_write,
833 .read = default_flash_read,
834 .probe = lpc2000_probe,
835 .auto_probe = lpc2000_probe,
836 .erase_check = lpc2000_erase_check,
837 .protect_check = lpc2000_protect_check,
838 .info = get_lpc2000_info,
839 };
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