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Cleanup lpc2000.c
[openocd.git] / src / flash / nor / lpc2000.c
blob43f45c81e3ecb09f2c8fe931c77277c10012a86a
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 struct working_area *iap_working_area;
72 uint32_t cclk;
73 int cmd51_dst_boundary;
74 int cmd51_can_256b;
75 int cmd51_can_8192b;
76 int calc_checksum;
77 uint32_t cmd51_max_buffer;
78 int checksum_vector;
79 };
80
81 enum lpc2000_status_codes {
82 LPC2000_CMD_SUCCESS = 0,
83 LPC2000_INVALID_COMMAND = 1,
84 LPC2000_SRC_ADDR_ERROR = 2,
85 LPC2000_DST_ADDR_ERROR = 3,
86 LPC2000_SRC_ADDR_NOT_MAPPED = 4,
87 LPC2000_DST_ADDR_NOT_MAPPED = 5,
88 LPC2000_COUNT_ERROR = 6,
89 LPC2000_INVALID_SECTOR = 7,
90 LPC2000_SECTOR_NOT_BLANK = 8,
91 LPC2000_SECTOR_NOT_PREPARED = 9,
92 LPC2000_COMPARE_ERROR = 10,
93 LPC2000_BUSY = 11,
94 LPC2000_PARAM_ERROR = 12,
95 LPC2000_ADDR_ERROR = 13,
96 LPC2000_ADDR_NOT_MAPPED = 14,
97 LPC2000_CMD_NOT_LOCKED = 15,
98 LPC2000_INVALID_CODE = 16,
99 LPC2000_INVALID_BAUD_RATE = 17,
100 LPC2000_INVALID_STOP_BIT = 18,
101 LPC2000_CRP_ENABLED = 19
102 };
103
104 static int lpc2000_build_sector_list(struct flash_bank *bank)
105 {
106 struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
107 uint32_t offset = 0;
108
109 /* default to a 4096 write buffer */
110 lpc2000_info->cmd51_max_buffer = 4096;
111
112 if (lpc2000_info->variant == lpc2000_v1) {
113 /* variant 1 has different layout for 128kb and 256kb flashes */
114 if (bank->size == 128 * 1024) {
115 bank->num_sectors = 16;
116 bank->sectors = malloc(sizeof(struct flash_sector) * 16);
117 for (int i = 0; i < 16; i++) {
118 bank->sectors[i].offset = offset;
119 bank->sectors[i].size = 8 * 1024;
120 offset += bank->sectors[i].size;
121 bank->sectors[i].is_erased = -1;
122 bank->sectors[i].is_protected = 1;
123 }
124 } else if (bank->size == 256 * 1024) {
125 bank->num_sectors = 18;
126 bank->sectors = malloc(sizeof(struct flash_sector) * 18);
127
128 for (int i = 0; i < 8; i++) {
129 bank->sectors[i].offset = offset;
130 bank->sectors[i].size = 8 * 1024;
131 offset += bank->sectors[i].size;
132 bank->sectors[i].is_erased = -1;
133 bank->sectors[i].is_protected = 1;
134 }
135 for (int i = 8; i < 10; i++) {
136 bank->sectors[i].offset = offset;
137 bank->sectors[i].size = 64 * 1024;
138 offset += bank->sectors[i].size;
139 bank->sectors[i].is_erased = -1;
140 bank->sectors[i].is_protected = 1;
141 }
142 for (int i = 10; i < 18; i++) {
143 bank->sectors[i].offset = offset;
144 bank->sectors[i].size = 8 * 1024;
145 offset += bank->sectors[i].size;
146 bank->sectors[i].is_erased = -1;
147 bank->sectors[i].is_protected = 1;
148 }
149 } else {
150 LOG_ERROR("BUG: unknown bank->size encountered");
151 exit(-1);
152 }
153 } else if (lpc2000_info->variant == lpc2000_v2) {
154 /* variant 2 has a uniform layout, only number of sectors differs */
155 switch (bank->size) {
156 case 4 * 1024:
157 lpc2000_info->cmd51_max_buffer = 1024;
158 bank->num_sectors = 1;
159 break;
160 case 8 * 1024:
161 lpc2000_info->cmd51_max_buffer = 1024;
162 bank->num_sectors = 2;
163 break;
164 case 16 * 1024:
165 bank->num_sectors = 4;
166 break;
167 case 32 * 1024:
168 bank->num_sectors = 8;
169 break;
170 case 64 * 1024:
171 bank->num_sectors = 9;
172 break;
173 case 128 * 1024:
174 bank->num_sectors = 11;
175 break;
176 case 256 * 1024:
177 bank->num_sectors = 15;
178 break;
179 case 500 * 1024:
180 bank->num_sectors = 27;
181 break;
182 case 512 * 1024:
183 case 504 * 1024:
184 bank->num_sectors = 28;
185 break;
186 default:
187 LOG_ERROR("BUG: unknown bank->size encountered");
188 exit(-1);
189 break;
190 }
191
192 bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
193
194 for (int i = 0; i < bank->num_sectors; i++) {
195 if (i < 8) {
196 bank->sectors[i].offset = offset;
197 bank->sectors[i].size = 4 * 1024;
198 offset += bank->sectors[i].size;
199 bank->sectors[i].is_erased = -1;
200 bank->sectors[i].is_protected = 1;
201 } else if (i < 22) {
202 bank->sectors[i].offset = offset;
203 bank->sectors[i].size = 32 * 1024;
204 offset += bank->sectors[i].size;
205 bank->sectors[i].is_erased = -1;
206 bank->sectors[i].is_protected = 1;
207 } else if (i < 28) {
208 bank->sectors[i].offset = offset;
209 bank->sectors[i].size = 4 * 1024;
210 offset += bank->sectors[i].size;
211 bank->sectors[i].is_erased = -1;
212 bank->sectors[i].is_protected = 1;
213 }
214 }
215 } else if (lpc2000_info->variant == lpc1700) {
216 switch (bank->size) {
217 case 32 * 1024:
218 bank->num_sectors = 8;
219 break;
220 case 64 * 1024:
221 bank->num_sectors = 16;
222 break;
223 case 128 * 1024:
224 bank->num_sectors = 18;
225 break;
226 case 256 * 1024:
227 bank->num_sectors = 22;
228 break;
229 case 512 * 1024:
230 bank->num_sectors = 30;
231 break;
232 default:
233 LOG_ERROR("BUG: unknown bank->size encountered");
234 exit(-1);
235 }
236
237 bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
238
239 for (int i = 0; i < bank->num_sectors; i++) {
240 bank->sectors[i].offset = offset;
241 /* sectors 0-15 are 4kB-sized, 16 and above are 32kB-sized for LPC17xx devices */
242 bank->sectors[i].size = (i < 16) ? 4 * 1024 : 32 * 1024;
243 offset += bank->sectors[i].size;
244 bank->sectors[i].is_erased = -1;
245 bank->sectors[i].is_protected = 1;
246 }
247 } else {
248 LOG_ERROR("BUG: unknown lpc2000_info->variant encountered");
249 exit(-1);
250 }
251
252 return ERROR_OK;
253 }
254
255 /* call LPC1700/LPC2000 IAP function
256 * uses 180 bytes working area
257 * 0x0 to 0x7: jump gate (BX to thumb state, b -2 to wait)
258 * 0x8 to 0x1f: command parameter table (1+5 words)
259 * 0x20 to 0x33: command result table (1+4 words)
260 * 0x34 to 0xb3: stack (only 128b needed)
261 */
262 static int lpc2000_iap_call(struct flash_bank *bank, int code, uint32_t param_table[5], uint32_t result_table[4])
263 {
264 int retval;
265 struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
266 struct target *target = bank->target;
267
268 /* regrab previously allocated working_area, or allocate a new one */
269 if (!lpc2000_info->iap_working_area) {
270 uint8_t jump_gate[8];
271
272 /* make sure we have a working area */
273 if (target_alloc_working_area(target, 180, &lpc2000_info->iap_working_area) != ERROR_OK) {
274 LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
275 return ERROR_FLASH_OPERATION_FAILED;
276 }
277
278 /* write IAP code to working area */
279 switch (lpc2000_info->variant) {
280 case lpc1700:
281 target_buffer_set_u32(target, jump_gate, ARMV4_5_T_BX(12));
282 target_buffer_set_u32(target, jump_gate + 4, ARMV5_T_BKPT(0));
283 break;
284 case lpc2000_v1:
285 case lpc2000_v2:
286 target_buffer_set_u32(target, jump_gate, ARMV4_5_BX(12));
287 target_buffer_set_u32(target, jump_gate + 4, ARMV4_5_B(0xfffffe, 0));
288 break;
289 default:
290 LOG_ERROR("BUG: unknown lpc2000_info->variant encountered");
291 exit(-1);
292 }
293
294 retval = target_write_memory(target, lpc2000_info->iap_working_area->address, 4, 2, jump_gate);
295 if (retval != ERROR_OK) {
296 LOG_ERROR("Write memory at address 0x%8.8" PRIx32 " failed (check work_area definition)",
297 lpc2000_info->iap_working_area->address);
298 return retval;
299 }
300 }
301
302 struct arm_algorithm arm_algo; /* for LPC2000 */
303 struct armv7m_algorithm armv7m_info; /* for LPC1700 */
304 uint32_t iap_entry_point = 0; /* to make compiler happier */
305
306 switch (lpc2000_info->variant) {
307 case lpc1700:
308 armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
309 armv7m_info.core_mode = ARMV7M_MODE_ANY;
310 iap_entry_point = 0x1fff1ff1;
311 break;
312 case lpc2000_v1:
313 case lpc2000_v2:
314 arm_algo.common_magic = ARM_COMMON_MAGIC;
315 arm_algo.core_mode = ARM_MODE_SVC;
316 arm_algo.core_state = ARM_STATE_ARM;
317 iap_entry_point = 0x7ffffff1;
318 break;
319 default:
320 LOG_ERROR("BUG: unknown lpc2000->variant encountered");
321 exit(-1);
322 }
323
324 struct mem_param mem_params[2];
325
326 /* command parameter table */
327 init_mem_param(&mem_params[0], lpc2000_info->iap_working_area->address + 8, 6 * 4, PARAM_OUT);
328 target_buffer_set_u32(target, mem_params[0].value, code);
329 target_buffer_set_u32(target, mem_params[0].value + 0x04, param_table[0]);
330 target_buffer_set_u32(target, mem_params[0].value + 0x08, param_table[1]);
331 target_buffer_set_u32(target, mem_params[0].value + 0x0c, param_table[2]);
332 target_buffer_set_u32(target, mem_params[0].value + 0x10, param_table[3]);
333 target_buffer_set_u32(target, mem_params[0].value + 0x14, param_table[4]);
334
335 struct reg_param reg_params[5];
336
337 init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
338 buf_set_u32(reg_params[0].value, 0, 32, lpc2000_info->iap_working_area->address + 0x08);
339
340 /* command result table */
341 init_mem_param(&mem_params[1], lpc2000_info->iap_working_area->address + 0x20, 5 * 4, PARAM_IN);
342
343 init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
344 buf_set_u32(reg_params[1].value, 0, 32, lpc2000_info->iap_working_area->address + 0x20);
345
346 /* IAP entry point */
347 init_reg_param(&reg_params[2], "r12", 32, PARAM_OUT);
348 buf_set_u32(reg_params[2].value, 0, 32, iap_entry_point);
349
350 switch (lpc2000_info->variant) {
351 case lpc1700:
352 /* IAP stack */
353 init_reg_param(&reg_params[3], "sp", 32, PARAM_OUT);
354 buf_set_u32(reg_params[3].value, 0, 32, lpc2000_info->iap_working_area->address + 0xb4);
355
356 /* return address */
357 init_reg_param(&reg_params[4], "lr", 32, PARAM_OUT);
358 buf_set_u32(reg_params[4].value, 0, 32, (lpc2000_info->iap_working_area->address + 0x04) | 1);
359 /* bit0 of LR = 1 to return in Thumb mode */
360
361 target_run_algorithm(target, 2, mem_params, 5, reg_params, lpc2000_info->iap_working_area->address, 0,
362 10000, &armv7m_info);
363 break;
364 case lpc2000_v1:
365 case lpc2000_v2:
366 /* IAP stack */
367 init_reg_param(&reg_params[3], "sp_svc", 32, PARAM_OUT);
368 buf_set_u32(reg_params[3].value, 0, 32, lpc2000_info->iap_working_area->address + 0xb4);
369
370 /* return address */
371 init_reg_param(&reg_params[4], "lr_svc", 32, PARAM_OUT);
372 buf_set_u32(reg_params[4].value, 0, 32, lpc2000_info->iap_working_area->address + 0x04);
373
374 target_run_algorithm(target, 2, mem_params, 5, reg_params, lpc2000_info->iap_working_area->address,
375 lpc2000_info->iap_working_area->address + 0x4, 10000, &arm_algo);
376 break;
377 default:
378 LOG_ERROR("BUG: unknown lpc2000->variant encountered");
379 exit(-1);
380 }
381
382 int status_code = target_buffer_get_u32(target, mem_params[1].value);
383 result_table[0] = target_buffer_get_u32(target, mem_params[1].value + 0x04);
384 result_table[1] = target_buffer_get_u32(target, mem_params[1].value + 0x08);
385 result_table[2] = target_buffer_get_u32(target, mem_params[1].value + 0x0c);
386 result_table[3] = target_buffer_get_u32(target, mem_params[1].value + 0x10);
387
388 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
389 ") completed with result = %8.8" PRIx32,
390 code, param_table[0], param_table[1], param_table[2], param_table[3], param_table[4], status_code);
391
392 destroy_mem_param(&mem_params[0]);
393 destroy_mem_param(&mem_params[1]);
394
395 destroy_reg_param(&reg_params[0]);
396 destroy_reg_param(&reg_params[1]);
397 destroy_reg_param(&reg_params[2]);
398 destroy_reg_param(&reg_params[3]);
399 destroy_reg_param(&reg_params[4]);
400
401 return status_code;
402 }
403
404 static int lpc2000_iap_blank_check(struct flash_bank *bank, int first, int last)
405 {
406 if ((first < 0) || (last >= bank->num_sectors))
407 return ERROR_FLASH_SECTOR_INVALID;
408
409 uint32_t param_table[5] = {0};
410 uint32_t result_table[4];
411
412 for (int i = first; i <= last; i++) {
413 /* check single sector */
414 param_table[0] = param_table[1] = i;
415 int status_code = lpc2000_iap_call(bank, 53, param_table, result_table);
416
417 switch (status_code) {
418 case ERROR_FLASH_OPERATION_FAILED:
419 return ERROR_FLASH_OPERATION_FAILED;
420 case LPC2000_CMD_SUCCESS:
421 bank->sectors[i].is_erased = 1;
422 break;
423 case LPC2000_SECTOR_NOT_BLANK:
424 bank->sectors[i].is_erased = 0;
425 break;
426 case LPC2000_INVALID_SECTOR:
427 bank->sectors[i].is_erased = 0;
428 break;
429 case LPC2000_BUSY:
430 return ERROR_FLASH_BUSY;
431 break;
432 default:
433 LOG_ERROR("BUG: unknown LPC2000 status code %i", status_code);
434 exit(-1);
435 }
436 }
437
438 return ERROR_OK;
439 }
440
441 /*
442 * flash bank lpc2000 <base> <size> 0 0 <target#> <lpc_variant> <cclk> [calc_checksum]
443 */
444 FLASH_BANK_COMMAND_HANDLER(lpc2000_flash_bank_command)
445 {
446 if (CMD_ARGC < 8)
447 return ERROR_COMMAND_SYNTAX_ERROR;
448
449 struct lpc2000_flash_bank *lpc2000_info = malloc(sizeof(struct lpc2000_flash_bank));
450 bank->driver_priv = lpc2000_info;
451
452 if (strcmp(CMD_ARGV[6], "lpc2000_v1") == 0) {
453 lpc2000_info->variant = lpc2000_v1;
454 lpc2000_info->cmd51_dst_boundary = 512;
455 lpc2000_info->cmd51_can_256b = 0;
456 lpc2000_info->cmd51_can_8192b = 1;
457 lpc2000_info->checksum_vector = 5;
458 } else if (strcmp(CMD_ARGV[6], "lpc2000_v2") == 0) {
459 lpc2000_info->variant = lpc2000_v2;
460 lpc2000_info->cmd51_dst_boundary = 256;
461 lpc2000_info->cmd51_can_256b = 1;
462 lpc2000_info->cmd51_can_8192b = 0;
463 lpc2000_info->checksum_vector = 5;
464 } else if (strcmp(CMD_ARGV[6], "lpc1700") == 0) {
465 lpc2000_info->variant = lpc1700;
466 lpc2000_info->cmd51_dst_boundary = 256;
467 lpc2000_info->cmd51_can_256b = 1;
468 lpc2000_info->cmd51_can_8192b = 0;
469 lpc2000_info->checksum_vector = 7;
470 } else {
471 LOG_ERROR("unknown LPC2000 variant: %s", CMD_ARGV[6]);
472 free(lpc2000_info);
473 return ERROR_FLASH_BANK_INVALID;
474 }
475
476 lpc2000_info->iap_working_area = NULL;
477 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[7], lpc2000_info->cclk);
478 lpc2000_info->calc_checksum = 0;
479 lpc2000_build_sector_list(bank);
480
481 if (CMD_ARGC >= 9) {
482 if (strcmp(CMD_ARGV[8], "calc_checksum") == 0)
483 lpc2000_info->calc_checksum = 1;
484 }
485
486 return ERROR_OK;
487 }
488
489 static int lpc2000_erase(struct flash_bank *bank, int first, int last)
490 {
491 if (bank->target->state != TARGET_HALTED) {
492 LOG_ERROR("Target not halted");
493 return ERROR_TARGET_NOT_HALTED;
494 }
495
496 struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
497 uint32_t param_table[5] = {0};
498
499 param_table[0] = first;
500 param_table[1] = last;
501 param_table[2] = lpc2000_info->cclk;
502
503 uint32_t result_table[4];
504
505 /* Prepare sectors */
506 int status_code = lpc2000_iap_call(bank, 50, param_table, result_table);
507 switch (status_code) {
508 case ERROR_FLASH_OPERATION_FAILED:
509 return ERROR_FLASH_OPERATION_FAILED;
510 case LPC2000_CMD_SUCCESS:
511 break;
512 case LPC2000_INVALID_SECTOR:
513 return ERROR_FLASH_SECTOR_INVALID;
514 break;
515 default:
516 LOG_WARNING("lpc2000 prepare sectors returned %i", status_code);
517 return ERROR_FLASH_OPERATION_FAILED;
518 }
519
520 /* Erase sectors */
521 status_code = lpc2000_iap_call(bank, 52, param_table, result_table);
522 switch (status_code) {
523 case ERROR_FLASH_OPERATION_FAILED:
524 return ERROR_FLASH_OPERATION_FAILED;
525 case LPC2000_CMD_SUCCESS:
526 break;
527 case LPC2000_INVALID_SECTOR:
528 return ERROR_FLASH_SECTOR_INVALID;
529 break;
530 default:
531 LOG_WARNING("lpc2000 erase sectors returned %i", status_code);
532 return ERROR_FLASH_OPERATION_FAILED;
533 }
534
535 return ERROR_OK;
536 }
537
538 static int lpc2000_protect(struct flash_bank *bank, int set, int first, int last)
539 {
540 /* can't protect/unprotect on the lpc2000 */
541 return ERROR_OK;
542 }
543
544 static int lpc2000_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
545 {
546 struct target *target = bank->target;
547
548 if (bank->target->state != TARGET_HALTED) {
549 LOG_ERROR("Target not halted");
550 return ERROR_TARGET_NOT_HALTED;
551 }
552
553 if (offset + count > bank->size)
554 return ERROR_FLASH_DST_OUT_OF_BANK;
555
556 struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
557
558 uint32_t dst_min_alignment = lpc2000_info->cmd51_dst_boundary;
559
560 if (offset % dst_min_alignment) {
561 LOG_WARNING("offset 0x%" PRIx32 " breaks required alignment 0x%" PRIx32, offset, dst_min_alignment);
562 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
563 }
564
565 int first_sector = 0;
566 int last_sector = 0;
567
568 for (int i = 0; i < bank->num_sectors; i++) {
569 if (offset >= bank->sectors[i].offset)
570 first_sector = i;
571 if (offset + DIV_ROUND_UP(count, dst_min_alignment) * dst_min_alignment > bank->sectors[i].offset)
572 last_sector = i;
573 }
574
575 LOG_DEBUG("first_sector: %i, last_sector: %i", first_sector, last_sector);
576
577 /* check if exception vectors should be flashed */
578 if ((offset == 0) && (count >= 0x20) && lpc2000_info->calc_checksum) {
579 uint32_t checksum = 0;
580 for (int i = 0; i < 8; i++) {
581 LOG_DEBUG("Vector 0x%2.2x: 0x%8.8" PRIx32, i * 4, buf_get_u32(buffer + (i * 4), 0, 32));
582 if (i != lpc2000_info->checksum_vector)
583 checksum += buf_get_u32(buffer + (i * 4), 0, 32);
584 }
585 checksum = 0 - checksum;
586 LOG_DEBUG("checksum: 0x%8.8" PRIx32, checksum);
587
588 uint32_t original_value = buf_get_u32(buffer + (lpc2000_info->checksum_vector * 4), 0, 32);
589 if (original_value != checksum) {
590 LOG_WARNING("Verification will fail since checksum in image (0x%8.8" PRIx32 ") to be written to flash is "
591 "different from calculated vector checksum (0x%8.8" PRIx32 ").", original_value, checksum);
592 LOG_WARNING("To remove this warning modify build tools on developer PC to inject correct LPC vector "
593 "checksum.");
594 }
595
596 buf_set_u32(buffer + (lpc2000_info->checksum_vector * 4), 0, 32, checksum);
597 }
598
599 struct working_area *download_area;
600
601 /* allocate a working area */
602 if (target_alloc_working_area(target, lpc2000_info->cmd51_max_buffer, &download_area) != ERROR_OK) {
603 LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
604 return ERROR_FLASH_OPERATION_FAILED;
605 }
606
607 uint32_t bytes_remaining = count;
608 uint32_t bytes_written = 0;
609 uint32_t param_table[5] = {0};
610 uint32_t result_table[4];
611 int retval = ERROR_OK;
612
613 while (bytes_remaining > 0) {
614 uint32_t thisrun_bytes;
615 if (bytes_remaining >= lpc2000_info->cmd51_max_buffer)
616 thisrun_bytes = lpc2000_info->cmd51_max_buffer;
617 else if (bytes_remaining >= 1024)
618 thisrun_bytes = 1024;
619 else if ((bytes_remaining >= 512) || (!lpc2000_info->cmd51_can_256b))
620 thisrun_bytes = 512;
621 else
622 thisrun_bytes = 256;
623
624 /* Prepare sectors */
625 param_table[0] = first_sector;
626 param_table[1] = last_sector;
627 int status_code = lpc2000_iap_call(bank, 50, param_table, result_table);
628 switch (status_code) {
629 case ERROR_FLASH_OPERATION_FAILED:
630 retval = ERROR_FLASH_OPERATION_FAILED;
631 break;
632 case LPC2000_CMD_SUCCESS:
633 break;
634 case LPC2000_INVALID_SECTOR:
635 retval = ERROR_FLASH_SECTOR_INVALID;
636 break;
637 default:
638 LOG_WARNING("lpc2000 prepare sectors returned %i", status_code);
639 retval = ERROR_FLASH_OPERATION_FAILED;
640 break;
641 }
642
643 /* Exit if error occured */
644 if (retval != ERROR_OK)
645 break;
646
647 if (bytes_remaining >= thisrun_bytes) {
648 retval = target_write_buffer(bank->target, download_area->address, thisrun_bytes, buffer + bytes_written);
649 if (retval != ERROR_OK) {
650 retval = ERROR_FLASH_OPERATION_FAILED;
651 break;
652 }
653 } else {
654 uint8_t *last_buffer = malloc(thisrun_bytes);
655 memcpy(last_buffer, buffer + bytes_written, bytes_remaining);
656 memset(last_buffer + bytes_remaining, 0xff, thisrun_bytes - bytes_remaining);
657 target_write_buffer(bank->target, download_area->address, thisrun_bytes, last_buffer);
658 free(last_buffer);
659 }
660
661 LOG_DEBUG("writing 0x%" PRIx32 " bytes to address 0x%" PRIx32, thisrun_bytes,
662 bank->base + offset + bytes_written);
663
664 /* Write data */
665 param_table[0] = bank->base + offset + bytes_written;
666 param_table[1] = download_area->address;
667 param_table[2] = thisrun_bytes;
668 param_table[3] = lpc2000_info->cclk;
669 status_code = lpc2000_iap_call(bank, 51, param_table, result_table);
670 switch (status_code) {
671 case ERROR_FLASH_OPERATION_FAILED:
672 retval = ERROR_FLASH_OPERATION_FAILED;
673 break;
674 case LPC2000_CMD_SUCCESS:
675 break;
676 case LPC2000_INVALID_SECTOR:
677 retval = ERROR_FLASH_SECTOR_INVALID;
678 break;
679 default:
680 LOG_WARNING("lpc2000 returned %i", status_code);
681 retval = ERROR_FLASH_OPERATION_FAILED;
682 break;
683 }
684
685 /* Exit if error occured */
686 if (retval != ERROR_OK)
687 break;
688
689 if (bytes_remaining > thisrun_bytes)
690 bytes_remaining -= thisrun_bytes;
691 else
692 bytes_remaining = 0;
693 bytes_written += thisrun_bytes;
694 }
695
696 target_free_working_area(target, download_area);
697
698 return retval;
699 }
700
701 static int lpc2000_probe(struct flash_bank *bank)
702 {
703 /* we can't probe on an lpc2000 if this is an lpc2xxx, it has the configured flash */
704 return ERROR_OK;
705 }
706
707 static int lpc2000_erase_check(struct flash_bank *bank)
708 {
709 if (bank->target->state != TARGET_HALTED) {
710 LOG_ERROR("Target not halted");
711 return ERROR_TARGET_NOT_HALTED;
712 }
713
714 return lpc2000_iap_blank_check(bank, 0, bank->num_sectors - 1);
715 }
716
717 static int lpc2000_protect_check(struct flash_bank *bank)
718 {
719 /* sectors are always protected */
720 return ERROR_OK;
721 }
722
723 static int get_lpc2000_info(struct flash_bank *bank, char *buf, int buf_size)
724 {
725 struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
726
727 snprintf(buf, buf_size, "lpc2000 flash driver variant: %i, clk: %" PRIi32 "kHz", lpc2000_info->variant,
728 lpc2000_info->cclk);
729
730 return ERROR_OK;
731 }
732
733 COMMAND_HANDLER(lpc2000_handle_part_id_command)
734 {
735 if (CMD_ARGC < 1)
736 return ERROR_COMMAND_SYNTAX_ERROR;
737
738 struct flash_bank *bank;
739 int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
740 if (ERROR_OK != retval)
741 return retval;
742
743 if (bank->target->state != TARGET_HALTED) {
744 LOG_ERROR("Target not halted");
745 return ERROR_TARGET_NOT_HALTED;
746 }
747
748 uint32_t param_table[5] = {0};
749 uint32_t result_table[4];
750
751 int status_code = lpc2000_iap_call(bank, 54, param_table, result_table);
752 if (status_code != 0x0) {
753 if (status_code == ERROR_FLASH_OPERATION_FAILED) {
754 command_print(CMD_CTX, "no sufficient working area specified, can't access LPC2000 IAP interface");
755 return ERROR_OK;
756 }
757 command_print(CMD_CTX, "lpc2000 IAP returned status code %i", status_code);
758 } else
759 command_print(CMD_CTX, "lpc2000 part id: 0x%8.8" PRIx32, result_table[0]);
760
761 return ERROR_OK;
762 }
763
764 static const struct command_registration lpc2000_exec_command_handlers[] = {
765 {
766 .name = "part_id",
767 .handler = lpc2000_handle_part_id_command,
768 .mode = COMMAND_EXEC,
769 .help = "print part id of lpc2000 flash bank <num>",
770 .usage = "<bank>",
771 },
772 COMMAND_REGISTRATION_DONE
773 };
774 static const struct command_registration lpc2000_command_handlers[] = {
775 {
776 .name = "lpc2000",
777 .mode = COMMAND_ANY,
778 .help = "lpc2000 flash command group",
779 .usage = "",
780 .chain = lpc2000_exec_command_handlers,
781 },
782 COMMAND_REGISTRATION_DONE
783 };
784
785 struct flash_driver lpc2000_flash = {
786 .name = "lpc2000",
787 .commands = lpc2000_command_handlers,
788 .flash_bank_command = lpc2000_flash_bank_command,
789 .erase = lpc2000_erase,
790 .protect = lpc2000_protect,
791 .write = lpc2000_write,
792 .read = default_flash_read,
793 .probe = lpc2000_probe,
794 .auto_probe = lpc2000_probe,
795 .erase_check = lpc2000_erase_check,
796 .protect_check = lpc2000_protect_check,
797 .info = get_lpc2000_info,
798 };
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