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flash: add NXP LPC800 support
[openocd.git] / src / flash / nor / lpc2000.c
blob3962f305c809ba3cef780cccb7cb6aa81c04c01d
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 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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 * lpc4300 (also available as lpc1800 - alias)
63 * - 43x2 | 3 | 5 | 7 (tested with 4337)
64 * - 18x2 | 3 | 5 | 7
65 *
66 * lpc800:
67 * - 810 | 1 | 2 (tested with 812)
68 */
69
70 typedef enum {
71 lpc2000_v1,
72 lpc2000_v2,
73 lpc1700,
74 lpc4300,
75 lpc800,
76 } lpc2000_variant;
77
78 struct lpc2000_flash_bank {
79 lpc2000_variant variant;
80 uint32_t cclk;
81 int cmd51_dst_boundary;
82 int cmd51_can_64b;
83 int cmd51_can_256b;
84 int cmd51_can_8192b;
85 int calc_checksum;
86 uint32_t cmd51_max_buffer;
87 int checksum_vector;
88 uint32_t iap_max_stack;
89 uint32_t cmd51_src_offset;
90 uint32_t lpc4300_bank;
91 };
92
93 enum lpc2000_status_codes {
94 LPC2000_CMD_SUCCESS = 0,
95 LPC2000_INVALID_COMMAND = 1,
96 LPC2000_SRC_ADDR_ERROR = 2,
97 LPC2000_DST_ADDR_ERROR = 3,
98 LPC2000_SRC_ADDR_NOT_MAPPED = 4,
99 LPC2000_DST_ADDR_NOT_MAPPED = 5,
100 LPC2000_COUNT_ERROR = 6,
101 LPC2000_INVALID_SECTOR = 7,
102 LPC2000_SECTOR_NOT_BLANK = 8,
103 LPC2000_SECTOR_NOT_PREPARED = 9,
104 LPC2000_COMPARE_ERROR = 10,
105 LPC2000_BUSY = 11,
106 LPC2000_PARAM_ERROR = 12,
107 LPC2000_ADDR_ERROR = 13,
108 LPC2000_ADDR_NOT_MAPPED = 14,
109 LPC2000_CMD_NOT_LOCKED = 15,
110 LPC2000_INVALID_CODE = 16,
111 LPC2000_INVALID_BAUD_RATE = 17,
112 LPC2000_INVALID_STOP_BIT = 18,
113 LPC2000_CRP_ENABLED = 19,
114 LPC2000_INVALID_FLASH_UNIT = 20,
115 LPC2000_USER_CODE_CHECKSUM = 21,
116 LCP2000_ERROR_SETTING_ACTIVE_PARTITION = 22,
117 };
118
119 static int lpc2000_build_sector_list(struct flash_bank *bank)
120 {
121 struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
122 uint32_t offset = 0;
123
124 /* default to a 4096 write buffer */
125 lpc2000_info->cmd51_max_buffer = 4096;
126
127 if (lpc2000_info->variant == lpc2000_v1) {
128 /* variant 1 has different layout for 128kb and 256kb flashes */
129 if (bank->size == 128 * 1024) {
130 bank->num_sectors = 16;
131 bank->sectors = malloc(sizeof(struct flash_sector) * 16);
132 for (int i = 0; i < 16; i++) {
133 bank->sectors[i].offset = offset;
134 bank->sectors[i].size = 8 * 1024;
135 offset += bank->sectors[i].size;
136 bank->sectors[i].is_erased = -1;
137 bank->sectors[i].is_protected = 1;
138 }
139 } else if (bank->size == 256 * 1024) {
140 bank->num_sectors = 18;
141 bank->sectors = malloc(sizeof(struct flash_sector) * 18);
142
143 for (int i = 0; i < 8; i++) {
144 bank->sectors[i].offset = offset;
145 bank->sectors[i].size = 8 * 1024;
146 offset += bank->sectors[i].size;
147 bank->sectors[i].is_erased = -1;
148 bank->sectors[i].is_protected = 1;
149 }
150 for (int i = 8; i < 10; i++) {
151 bank->sectors[i].offset = offset;
152 bank->sectors[i].size = 64 * 1024;
153 offset += bank->sectors[i].size;
154 bank->sectors[i].is_erased = -1;
155 bank->sectors[i].is_protected = 1;
156 }
157 for (int i = 10; i < 18; i++) {
158 bank->sectors[i].offset = offset;
159 bank->sectors[i].size = 8 * 1024;
160 offset += bank->sectors[i].size;
161 bank->sectors[i].is_erased = -1;
162 bank->sectors[i].is_protected = 1;
163 }
164 } else {
165 LOG_ERROR("BUG: unknown bank->size encountered");
166 exit(-1);
167 }
168 } else if (lpc2000_info->variant == lpc2000_v2) {
169 /* variant 2 has a uniform layout, only number of sectors differs */
170 switch (bank->size) {
171 case 4 * 1024:
172 lpc2000_info->cmd51_max_buffer = 1024;
173 bank->num_sectors = 1;
174 break;
175 case 8 * 1024:
176 lpc2000_info->cmd51_max_buffer = 1024;
177 bank->num_sectors = 2;
178 break;
179 case 16 * 1024:
180 bank->num_sectors = 4;
181 break;
182 case 32 * 1024:
183 bank->num_sectors = 8;
184 break;
185 case 64 * 1024:
186 bank->num_sectors = 9;
187 break;
188 case 128 * 1024:
189 bank->num_sectors = 11;
190 break;
191 case 256 * 1024:
192 bank->num_sectors = 15;
193 break;
194 case 500 * 1024:
195 bank->num_sectors = 27;
196 break;
197 case 512 * 1024:
198 case 504 * 1024:
199 bank->num_sectors = 28;
200 break;
201 default:
202 LOG_ERROR("BUG: unknown bank->size encountered");
203 exit(-1);
204 break;
205 }
206
207 bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
208
209 for (int i = 0; i < bank->num_sectors; i++) {
210 if (i < 8) {
211 bank->sectors[i].offset = offset;
212 bank->sectors[i].size = 4 * 1024;
213 offset += bank->sectors[i].size;
214 bank->sectors[i].is_erased = -1;
215 bank->sectors[i].is_protected = 1;
216 } else if (i < 22) {
217 bank->sectors[i].offset = offset;
218 bank->sectors[i].size = 32 * 1024;
219 offset += bank->sectors[i].size;
220 bank->sectors[i].is_erased = -1;
221 bank->sectors[i].is_protected = 1;
222 } else if (i < 28) {
223 bank->sectors[i].offset = offset;
224 bank->sectors[i].size = 4 * 1024;
225 offset += bank->sectors[i].size;
226 bank->sectors[i].is_erased = -1;
227 bank->sectors[i].is_protected = 1;
228 }
229 }
230 } else if (lpc2000_info->variant == lpc1700) {
231 switch (bank->size) {
232 case 4 * 1024:
233 lpc2000_info->cmd51_max_buffer = 1024;
234 bank->num_sectors = 1;
235 break;
236 case 8 * 1024:
237 lpc2000_info->cmd51_max_buffer = 1024;
238 bank->num_sectors = 2;
239 break;
240 case 16 * 1024:
241 lpc2000_info->cmd51_max_buffer = 1024;
242 bank->num_sectors = 4;
243 break;
244 case 32 * 1024:
245 lpc2000_info->cmd51_max_buffer = 1024;
246 bank->num_sectors = 8;
247 break;
248 case 64 * 1024:
249 bank->num_sectors = 16;
250 break;
251 case 128 * 1024:
252 bank->num_sectors = 18;
253 break;
254 case 256 * 1024:
255 bank->num_sectors = 22;
256 break;
257 case 512 * 1024:
258 bank->num_sectors = 30;
259 break;
260 default:
261 LOG_ERROR("BUG: unknown bank->size encountered");
262 exit(-1);
263 }
264
265 bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
266
267 for (int i = 0; i < bank->num_sectors; i++) {
268 bank->sectors[i].offset = offset;
269 /* sectors 0-15 are 4kB-sized, 16 and above are 32kB-sized for LPC17xx devices */
270 bank->sectors[i].size = (i < 16) ? 4 * 1024 : 32 * 1024;
271 offset += bank->sectors[i].size;
272 bank->sectors[i].is_erased = -1;
273 bank->sectors[i].is_protected = 1;
274 }
275 } else if (lpc2000_info->variant == lpc4300) {
276 switch (bank->size) {
277 case 256 * 1024:
278 bank->num_sectors = 11;
279 break;
280 case 384 * 1024:
281 bank->num_sectors = 13;
282 break;
283 case 512 * 1024:
284 bank->num_sectors = 15;
285 break;
286 default:
287 LOG_ERROR("BUG: unknown bank->size encountered");
288 exit(-1);
289 }
290
291 bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
292
293 for (int i = 0; i < bank->num_sectors; i++) {
294 bank->sectors[i].offset = offset;
295 /* sectors 0-7 are 8kB-sized, 8 and above are 64kB-sized for LPC43xx devices */
296 bank->sectors[i].size = (i < 8) ? 8 * 1024 : 64 * 1024;
297 offset += bank->sectors[i].size;
298 bank->sectors[i].is_erased = -1;
299 bank->sectors[i].is_protected = 1;
300 }
301
302 } else if (lpc2000_info->variant == lpc800) {
303 lpc2000_info->cmd51_max_buffer = 1024;
304 switch (bank->size) {
305 case 4 * 1024:
306 bank->num_sectors = 4;
307 break;
308 case 8 * 1024:
309 bank->num_sectors = 8;
310 break;
311 case 16 * 1024:
312 bank->num_sectors = 16;
313 break;
314 default:
315 LOG_ERROR("BUG: unknown bank->size encountered");
316 exit(-1);
317 }
318
319 bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
320
321 for (int i = 0; i < bank->num_sectors; i++) {
322 bank->sectors[i].offset = offset;
323 /* sectors 0-15 are 1kB-sized for LPC8xx devices */
324 bank->sectors[i].size = 1 * 1024;
325 offset += bank->sectors[i].size;
326 bank->sectors[i].is_erased = -1;
327 bank->sectors[i].is_protected = 1;
328 }
329
330 } else {
331 LOG_ERROR("BUG: unknown lpc2000_info->variant encountered");
332 exit(-1);
333 }
334
335 return ERROR_OK;
336 }
337
338 /* this function allocates and initializes working area used for IAP algorithm
339 * uses 52 + max IAP stack bytes working area
340 * 0x0 to 0x7: jump gate (BX to thumb state, b -2 to wait)
341 * 0x8 to 0x1f: command parameter table (1+5 words)
342 * 0x20 to 0x33: command result table (1+4 words)
343 * 0x34 to 0xb3|0x104: stack (only 128b needed for lpc17xx/2000, 208 for lpc43xx and 148b for lpc8xx)
344 */
345
346 static int lpc2000_iap_working_area_init(struct flash_bank *bank, struct working_area **iap_working_area)
347 {
348 struct target *target = bank->target;
349 struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
350
351 if (target_alloc_working_area(target, 0x34 + lpc2000_info->iap_max_stack, iap_working_area) != ERROR_OK) {
352 LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
353 return ERROR_FLASH_OPERATION_FAILED;
354 }
355
356 uint8_t jump_gate[8];
357
358 /* write IAP code to working area */
359 switch (lpc2000_info->variant) {
360 case lpc800:
361 case lpc1700:
362 case lpc4300:
363 target_buffer_set_u32(target, jump_gate, ARMV4_5_T_BX(12));
364 target_buffer_set_u32(target, jump_gate + 4, ARMV5_T_BKPT(0));
365 break;
366 case lpc2000_v1:
367 case lpc2000_v2:
368 target_buffer_set_u32(target, jump_gate, ARMV4_5_BX(12));
369 target_buffer_set_u32(target, jump_gate + 4, ARMV4_5_B(0xfffffe, 0));
370 break;
371 default:
372 LOG_ERROR("BUG: unknown lpc2000_info->variant encountered");
373 exit(-1);
374 }
375
376 int retval = target_write_memory(target, (*iap_working_area)->address, 4, 2, jump_gate);
377 if (retval != ERROR_OK)
378 LOG_ERROR("Write memory at address 0x%8.8" PRIx32 " failed (check work_area definition)",
379 (*iap_working_area)->address);
380
381 return retval;
382 }
383
384 /* call LPC1700/LPC2000 IAP function */
385
386 static int lpc2000_iap_call(struct flash_bank *bank, struct working_area *iap_working_area, int code,
387 uint32_t param_table[5], uint32_t result_table[4])
388 {
389 struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
390 struct target *target = bank->target;
391
392 struct arm_algorithm arm_algo; /* for LPC2000 */
393 struct armv7m_algorithm armv7m_info; /* for LPC1700 */
394 uint32_t iap_entry_point = 0; /* to make compiler happier */
395
396 switch (lpc2000_info->variant) {
397 case lpc800:
398 case lpc1700:
399 armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
400 armv7m_info.core_mode = ARM_MODE_THREAD;
401 iap_entry_point = 0x1fff1ff1;
402 break;
403 case lpc2000_v1:
404 case lpc2000_v2:
405 arm_algo.common_magic = ARM_COMMON_MAGIC;
406 arm_algo.core_mode = ARM_MODE_SVC;
407 arm_algo.core_state = ARM_STATE_ARM;
408 iap_entry_point = 0x7ffffff1;
409 break;
410 case lpc4300:
411 armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
412 armv7m_info.core_mode = ARM_MODE_THREAD;
413 /* read out IAP entry point from ROM driver table at 0x10400100 */
414 target_read_u32(target, 0x10400100, &iap_entry_point);
415 break;
416 default:
417 LOG_ERROR("BUG: unknown lpc2000->variant encountered");
418 exit(-1);
419 }
420
421 struct mem_param mem_params[2];
422
423 /* command parameter table */
424 init_mem_param(&mem_params[0], iap_working_area->address + 8, 6 * 4, PARAM_OUT);
425 target_buffer_set_u32(target, mem_params[0].value, code);
426 target_buffer_set_u32(target, mem_params[0].value + 0x04, param_table[0]);
427 target_buffer_set_u32(target, mem_params[0].value + 0x08, param_table[1]);
428 target_buffer_set_u32(target, mem_params[0].value + 0x0c, param_table[2]);
429 target_buffer_set_u32(target, mem_params[0].value + 0x10, param_table[3]);
430 target_buffer_set_u32(target, mem_params[0].value + 0x14, param_table[4]);
431
432 struct reg_param reg_params[5];
433
434 init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
435 buf_set_u32(reg_params[0].value, 0, 32, iap_working_area->address + 0x08);
436
437 /* command result table */
438 init_mem_param(&mem_params[1], iap_working_area->address + 0x20, 5 * 4, PARAM_IN);
439
440 init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
441 buf_set_u32(reg_params[1].value, 0, 32, iap_working_area->address + 0x20);
442
443 /* IAP entry point */
444 init_reg_param(&reg_params[2], "r12", 32, PARAM_OUT);
445 buf_set_u32(reg_params[2].value, 0, 32, iap_entry_point);
446
447 switch (lpc2000_info->variant) {
448 case lpc800:
449 case lpc1700:
450 case lpc4300:
451 /* IAP stack */
452 init_reg_param(&reg_params[3], "sp", 32, PARAM_OUT);
453 buf_set_u32(reg_params[3].value, 0, 32, iap_working_area->address + lpc2000_info->cmd51_src_offset);
454
455 /* return address */
456 init_reg_param(&reg_params[4], "lr", 32, PARAM_OUT);
457 buf_set_u32(reg_params[4].value, 0, 32, (iap_working_area->address + 0x04) | 1);
458 /* bit0 of LR = 1 to return in Thumb mode */
459
460 target_run_algorithm(target, 2, mem_params, 5, reg_params, iap_working_area->address, 0, 10000,
461 &armv7m_info);
462 break;
463 case lpc2000_v1:
464 case lpc2000_v2:
465 /* IAP stack */
466 init_reg_param(&reg_params[3], "sp_svc", 32, PARAM_OUT);
467 buf_set_u32(reg_params[3].value, 0, 32, iap_working_area->address + lpc2000_info->cmd51_src_offset);
468
469 /* return address */
470 init_reg_param(&reg_params[4], "lr_svc", 32, PARAM_OUT);
471 buf_set_u32(reg_params[4].value, 0, 32, iap_working_area->address + 0x04);
472
473 target_run_algorithm(target, 2, mem_params, 5, reg_params, iap_working_area->address,
474 iap_working_area->address + 0x4, 10000, &arm_algo);
475 break;
476 default:
477 LOG_ERROR("BUG: unknown lpc2000->variant encountered");
478 exit(-1);
479 }
480
481 int status_code = target_buffer_get_u32(target, mem_params[1].value);
482 result_table[0] = target_buffer_get_u32(target, mem_params[1].value + 0x04);
483 result_table[1] = target_buffer_get_u32(target, mem_params[1].value + 0x08);
484 result_table[2] = target_buffer_get_u32(target, mem_params[1].value + 0x0c);
485 result_table[3] = target_buffer_get_u32(target, mem_params[1].value + 0x10);
486
487 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
488 ") completed with result = %8.8" PRIx32,
489 code, param_table[0], param_table[1], param_table[2], param_table[3], param_table[4], status_code);
490
491 destroy_mem_param(&mem_params[0]);
492 destroy_mem_param(&mem_params[1]);
493
494 destroy_reg_param(&reg_params[0]);
495 destroy_reg_param(&reg_params[1]);
496 destroy_reg_param(&reg_params[2]);
497 destroy_reg_param(&reg_params[3]);
498 destroy_reg_param(&reg_params[4]);
499
500 return status_code;
501 }
502
503 static int lpc2000_iap_blank_check(struct flash_bank *bank, int first, int last)
504 {
505 if ((first < 0) || (last >= bank->num_sectors))
506 return ERROR_FLASH_SECTOR_INVALID;
507
508 uint32_t param_table[5] = {0};
509 uint32_t result_table[4];
510 struct working_area *iap_working_area;
511
512 int retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
513
514 if (retval != ERROR_OK)
515 return retval;
516
517 struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
518 if (lpc2000_info->variant == lpc4300)
519 param_table[2] = lpc2000_info->lpc4300_bank;
520
521 for (int i = first; i <= last && retval == ERROR_OK; i++) {
522 /* check single sector */
523 param_table[0] = param_table[1] = i;
524 int status_code = lpc2000_iap_call(bank, iap_working_area, 53, param_table, result_table);
525
526 switch (status_code) {
527 case ERROR_FLASH_OPERATION_FAILED:
528 retval = ERROR_FLASH_OPERATION_FAILED;
529 break;
530 case LPC2000_CMD_SUCCESS:
531 bank->sectors[i].is_erased = 1;
532 break;
533 case LPC2000_SECTOR_NOT_BLANK:
534 bank->sectors[i].is_erased = 0;
535 break;
536 case LPC2000_INVALID_SECTOR:
537 bank->sectors[i].is_erased = 0;
538 break;
539 case LPC2000_BUSY:
540 retval = ERROR_FLASH_BUSY;
541 break;
542 default:
543 LOG_ERROR("BUG: unknown LPC2000 status code %i", status_code);
544 exit(-1);
545 }
546 }
547
548 struct target *target = bank->target;
549 target_free_working_area(target, iap_working_area);
550
551 return retval;
552 }
553
554 /*
555 * flash bank lpc2000 <base> <size> 0 0 <target#> <lpc_variant> <cclk> [calc_checksum]
556 */
557 FLASH_BANK_COMMAND_HANDLER(lpc2000_flash_bank_command)
558 {
559 if (CMD_ARGC < 8)
560 return ERROR_COMMAND_SYNTAX_ERROR;
561
562 struct lpc2000_flash_bank *lpc2000_info = malloc(sizeof(struct lpc2000_flash_bank));
563 bank->driver_priv = lpc2000_info;
564
565 if (strcmp(CMD_ARGV[6], "lpc2000_v1") == 0) {
566 lpc2000_info->variant = lpc2000_v1;
567 lpc2000_info->cmd51_dst_boundary = 512;
568 lpc2000_info->cmd51_can_256b = 0;
569 lpc2000_info->cmd51_can_8192b = 1;
570 lpc2000_info->checksum_vector = 5;
571 lpc2000_info->iap_max_stack = 128;
572 } else if (strcmp(CMD_ARGV[6], "lpc2000_v2") == 0) {
573 lpc2000_info->variant = lpc2000_v2;
574 lpc2000_info->cmd51_dst_boundary = 256;
575 lpc2000_info->cmd51_can_256b = 1;
576 lpc2000_info->cmd51_can_8192b = 0;
577 lpc2000_info->checksum_vector = 5;
578 lpc2000_info->iap_max_stack = 128;
579 } else if (strcmp(CMD_ARGV[6], "lpc1700") == 0) {
580 lpc2000_info->variant = lpc1700;
581 lpc2000_info->cmd51_dst_boundary = 256;
582 lpc2000_info->cmd51_can_256b = 1;
583 lpc2000_info->cmd51_can_8192b = 0;
584 lpc2000_info->checksum_vector = 7;
585 lpc2000_info->iap_max_stack = 128;
586 } else if (strcmp(CMD_ARGV[6], "lpc1800") == 0 || strcmp(CMD_ARGV[6], "lpc4300") == 0) {
587 lpc2000_info->variant = lpc4300;
588 lpc2000_info->cmd51_dst_boundary = 512;
589 lpc2000_info->cmd51_can_256b = 0;
590 lpc2000_info->cmd51_can_8192b = 0;
591 lpc2000_info->checksum_vector = 7;
592 lpc2000_info->iap_max_stack = 208;
593 } else if (strcmp(CMD_ARGV[6], "lpc800") == 0) {
594 lpc2000_info->variant = lpc800;
595 lpc2000_info->cmd51_dst_boundary = 64;
596 lpc2000_info->cmd51_can_64b = 1;
597 lpc2000_info->cmd51_can_256b = 0;
598 lpc2000_info->cmd51_can_8192b = 0;
599 lpc2000_info->checksum_vector = 7;
600 lpc2000_info->iap_max_stack = 148;
601 } else {
602 LOG_ERROR("unknown LPC2000 variant: %s", CMD_ARGV[6]);
603 free(lpc2000_info);
604 return ERROR_FLASH_BANK_INVALID;
605 }
606
607 /* see lpc2000_iap_working_area_init() for the reason behind the 0x34 value */
608 lpc2000_info->cmd51_src_offset = 0x34 + lpc2000_info->iap_max_stack;
609
610 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[7], lpc2000_info->cclk);
611 lpc2000_info->calc_checksum = 0;
612 lpc2000_build_sector_list(bank);
613
614 uint32_t temp_base = 0;
615 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], temp_base);
616 if (temp_base >= 0x1B000000)
617 lpc2000_info->lpc4300_bank = 1; /* bank B */
618 else
619 lpc2000_info->lpc4300_bank = 0; /* bank A */
620
621 if (CMD_ARGC >= 9) {
622 if (strcmp(CMD_ARGV[8], "calc_checksum") == 0)
623 lpc2000_info->calc_checksum = 1;
624 }
625
626 return ERROR_OK;
627 }
628
629 static int lpc2000_erase(struct flash_bank *bank, int first, int last)
630 {
631 if (bank->target->state != TARGET_HALTED) {
632 LOG_ERROR("Target not halted");
633 return ERROR_TARGET_NOT_HALTED;
634 }
635
636 struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
637 uint32_t param_table[5] = {0};
638
639 param_table[0] = first;
640 param_table[1] = last;
641
642 if (lpc2000_info->variant == lpc4300)
643 param_table[2] = lpc2000_info->lpc4300_bank;
644 else
645 param_table[2] = lpc2000_info->cclk;
646
647 uint32_t result_table[4];
648 struct working_area *iap_working_area;
649
650 int retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
651
652 if (retval != ERROR_OK)
653 return retval;
654
655 /* Prepare sectors */
656 int status_code = lpc2000_iap_call(bank, iap_working_area, 50, param_table, result_table);
657 switch (status_code) {
658 case ERROR_FLASH_OPERATION_FAILED:
659 retval = ERROR_FLASH_OPERATION_FAILED;
660 break;
661 case LPC2000_CMD_SUCCESS:
662 break;
663 case LPC2000_INVALID_SECTOR:
664 retval = ERROR_FLASH_SECTOR_INVALID;
665 break;
666 default:
667 LOG_WARNING("lpc2000 prepare sectors returned %i", status_code);
668 retval = ERROR_FLASH_OPERATION_FAILED;
669 break;
670 }
671
672 if (retval == ERROR_OK) {
673 /* Erase sectors */
674 param_table[2] = lpc2000_info->cclk;
675 if (lpc2000_info->variant == lpc4300)
676 param_table[3] = lpc2000_info->lpc4300_bank;
677
678 status_code = lpc2000_iap_call(bank, iap_working_area, 52, param_table, result_table);
679 switch (status_code) {
680 case ERROR_FLASH_OPERATION_FAILED:
681 retval = ERROR_FLASH_OPERATION_FAILED;
682 break;
683 case LPC2000_CMD_SUCCESS:
684 break;
685 case LPC2000_INVALID_SECTOR:
686 retval = ERROR_FLASH_SECTOR_INVALID;
687 break;
688 default:
689 LOG_WARNING("lpc2000 erase sectors returned %i", status_code);
690 retval = ERROR_FLASH_OPERATION_FAILED;
691 break;
692 }
693 }
694
695 struct target *target = bank->target;
696 target_free_working_area(target, iap_working_area);
697
698 return retval;
699 }
700
701 static int lpc2000_protect(struct flash_bank *bank, int set, int first, int last)
702 {
703 /* can't protect/unprotect on the lpc2000 */
704 return ERROR_OK;
705 }
706
707 static int lpc2000_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
708 {
709 struct target *target = bank->target;
710
711 if (bank->target->state != TARGET_HALTED) {
712 LOG_ERROR("Target not halted");
713 return ERROR_TARGET_NOT_HALTED;
714 }
715
716 if (offset + count > bank->size)
717 return ERROR_FLASH_DST_OUT_OF_BANK;
718
719 struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
720
721 uint32_t dst_min_alignment = lpc2000_info->cmd51_dst_boundary;
722
723 if (offset % dst_min_alignment) {
724 LOG_WARNING("offset 0x%" PRIx32 " breaks required alignment 0x%" PRIx32, offset, dst_min_alignment);
725 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
726 }
727
728 int first_sector = 0;
729 int last_sector = 0;
730
731 for (int i = 0; i < bank->num_sectors; i++) {
732 if (offset >= bank->sectors[i].offset)
733 first_sector = i;
734 if (offset + DIV_ROUND_UP(count, dst_min_alignment) * dst_min_alignment > bank->sectors[i].offset)
735 last_sector = i;
736 }
737
738 LOG_DEBUG("first_sector: %i, last_sector: %i", first_sector, last_sector);
739
740 /* check if exception vectors should be flashed */
741 if ((offset == 0) && (count >= 0x20) && lpc2000_info->calc_checksum) {
742 uint32_t checksum = 0;
743 for (int i = 0; i < 8; i++) {
744 LOG_DEBUG("Vector 0x%2.2x: 0x%8.8" PRIx32, i * 4, buf_get_u32(buffer + (i * 4), 0, 32));
745 if (i != lpc2000_info->checksum_vector)
746 checksum += buf_get_u32(buffer + (i * 4), 0, 32);
747 }
748 checksum = 0 - checksum;
749 LOG_DEBUG("checksum: 0x%8.8" PRIx32, checksum);
750
751 uint32_t original_value = buf_get_u32(buffer + (lpc2000_info->checksum_vector * 4), 0, 32);
752 if (original_value != checksum) {
753 LOG_WARNING("Verification will fail since checksum in image (0x%8.8" PRIx32 ") to be written to flash is "
754 "different from calculated vector checksum (0x%8.8" PRIx32 ").", original_value, checksum);
755 LOG_WARNING("To remove this warning modify build tools on developer PC to inject correct LPC vector "
756 "checksum.");
757 }
758
759 buf_set_u32(buffer + (lpc2000_info->checksum_vector * 4), 0, 32, checksum);
760 }
761
762 struct working_area *iap_working_area;
763
764 int retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
765
766 if (retval != ERROR_OK)
767 return retval;
768
769 struct working_area *download_area;
770
771 /* allocate a working area */
772 if (target_alloc_working_area(target, lpc2000_info->cmd51_max_buffer, &download_area) != ERROR_OK) {
773 LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
774 target_free_working_area(target, iap_working_area);
775 return ERROR_FLASH_OPERATION_FAILED;
776 }
777
778 uint32_t bytes_remaining = count;
779 uint32_t bytes_written = 0;
780 uint32_t param_table[5] = {0};
781 uint32_t result_table[4];
782
783 while (bytes_remaining > 0) {
784 uint32_t thisrun_bytes;
785 if (bytes_remaining >= lpc2000_info->cmd51_max_buffer)
786 thisrun_bytes = lpc2000_info->cmd51_max_buffer;
787 else if (bytes_remaining >= 1024)
788 thisrun_bytes = 1024;
789 else if ((bytes_remaining >= 512) || (!lpc2000_info->cmd51_can_256b))
790 thisrun_bytes = 512;
791 else if ((bytes_remaining >= 256) || (!lpc2000_info->cmd51_can_64b))
792 thisrun_bytes = 256;
793 else
794 thisrun_bytes = 64;
795
796 /* Prepare sectors */
797 param_table[0] = first_sector;
798 param_table[1] = last_sector;
799
800 if (lpc2000_info->variant == lpc4300)
801 param_table[2] = lpc2000_info->lpc4300_bank;
802 else
803 param_table[2] = lpc2000_info->cclk;
804
805 int status_code = lpc2000_iap_call(bank, iap_working_area, 50, param_table, result_table);
806 switch (status_code) {
807 case ERROR_FLASH_OPERATION_FAILED:
808 retval = ERROR_FLASH_OPERATION_FAILED;
809 break;
810 case LPC2000_CMD_SUCCESS:
811 break;
812 case LPC2000_INVALID_SECTOR:
813 retval = ERROR_FLASH_SECTOR_INVALID;
814 break;
815 default:
816 LOG_WARNING("lpc2000 prepare sectors returned %i", status_code);
817 retval = ERROR_FLASH_OPERATION_FAILED;
818 break;
819 }
820
821 /* Exit if error occured */
822 if (retval != ERROR_OK)
823 break;
824
825 if (bytes_remaining >= thisrun_bytes) {
826 retval = target_write_buffer(bank->target, download_area->address, thisrun_bytes, buffer + bytes_written);
827 if (retval != ERROR_OK) {
828 retval = ERROR_FLASH_OPERATION_FAILED;
829 break;
830 }
831 } else {
832 uint8_t *last_buffer = malloc(thisrun_bytes);
833 memcpy(last_buffer, buffer + bytes_written, bytes_remaining);
834 memset(last_buffer + bytes_remaining, 0xff, thisrun_bytes - bytes_remaining);
835 target_write_buffer(bank->target, download_area->address, thisrun_bytes, last_buffer);
836 free(last_buffer);
837 }
838
839 LOG_DEBUG("writing 0x%" PRIx32 " bytes to address 0x%" PRIx32, thisrun_bytes,
840 bank->base + offset + bytes_written);
841
842 /* Write data */
843 param_table[0] = bank->base + offset + bytes_written;
844 param_table[1] = download_area->address;
845 param_table[2] = thisrun_bytes;
846 param_table[3] = lpc2000_info->cclk;
847 status_code = lpc2000_iap_call(bank, iap_working_area, 51, param_table, result_table);
848 switch (status_code) {
849 case ERROR_FLASH_OPERATION_FAILED:
850 retval = ERROR_FLASH_OPERATION_FAILED;
851 break;
852 case LPC2000_CMD_SUCCESS:
853 break;
854 case LPC2000_INVALID_SECTOR:
855 retval = ERROR_FLASH_SECTOR_INVALID;
856 break;
857 default:
858 LOG_WARNING("lpc2000 returned %i", status_code);
859 retval = ERROR_FLASH_OPERATION_FAILED;
860 break;
861 }
862
863 /* Exit if error occured */
864 if (retval != ERROR_OK)
865 break;
866
867 if (bytes_remaining > thisrun_bytes)
868 bytes_remaining -= thisrun_bytes;
869 else
870 bytes_remaining = 0;
871 bytes_written += thisrun_bytes;
872 }
873
874 target_free_working_area(target, iap_working_area);
875 target_free_working_area(target, download_area);
876
877 return retval;
878 }
879
880 static int lpc2000_probe(struct flash_bank *bank)
881 {
882 /* we can't probe on an lpc2000 if this is an lpc2xxx, it has the configured flash */
883 return ERROR_OK;
884 }
885
886 static int lpc2000_erase_check(struct flash_bank *bank)
887 {
888 if (bank->target->state != TARGET_HALTED) {
889 LOG_ERROR("Target not halted");
890 return ERROR_TARGET_NOT_HALTED;
891 }
892
893 return lpc2000_iap_blank_check(bank, 0, bank->num_sectors - 1);
894 }
895
896 static int lpc2000_protect_check(struct flash_bank *bank)
897 {
898 /* sectors are always protected */
899 return ERROR_OK;
900 }
901
902 static int get_lpc2000_info(struct flash_bank *bank, char *buf, int buf_size)
903 {
904 struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
905
906 snprintf(buf, buf_size, "lpc2000 flash driver variant: %i, clk: %" PRIi32 "kHz", lpc2000_info->variant,
907 lpc2000_info->cclk);
908
909 return ERROR_OK;
910 }
911
912 COMMAND_HANDLER(lpc2000_handle_part_id_command)
913 {
914 if (CMD_ARGC < 1)
915 return ERROR_COMMAND_SYNTAX_ERROR;
916
917 struct flash_bank *bank;
918 int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
919 if (ERROR_OK != retval)
920 return retval;
921
922 if (bank->target->state != TARGET_HALTED) {
923 LOG_ERROR("Target not halted");
924 return ERROR_TARGET_NOT_HALTED;
925 }
926
927 uint32_t param_table[5] = {0};
928 uint32_t result_table[4];
929 struct working_area *iap_working_area;
930
931 retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
932
933 if (retval != ERROR_OK)
934 return retval;
935
936 int status_code = lpc2000_iap_call(bank, iap_working_area, 54, param_table, result_table);
937 if (status_code != 0x0) {
938 if (status_code == ERROR_FLASH_OPERATION_FAILED) {
939 command_print(CMD_CTX, "no sufficient working area specified, can't access LPC2000 IAP interface");
940 } else
941 command_print(CMD_CTX, "lpc2000 IAP returned status code %i", status_code);
942 } else
943 command_print(CMD_CTX, "lpc2000 part id: 0x%8.8" PRIx32, result_table[0]);
944
945 return retval;
946 }
947
948 static const struct command_registration lpc2000_exec_command_handlers[] = {
949 {
950 .name = "part_id",
951 .handler = lpc2000_handle_part_id_command,
952 .mode = COMMAND_EXEC,
953 .help = "print part id of lpc2000 flash bank <num>",
954 .usage = "<bank>",
955 },
956 COMMAND_REGISTRATION_DONE
957 };
958 static const struct command_registration lpc2000_command_handlers[] = {
959 {
960 .name = "lpc2000",
961 .mode = COMMAND_ANY,
962 .help = "lpc2000 flash command group",
963 .usage = "",
964 .chain = lpc2000_exec_command_handlers,
965 },
966 COMMAND_REGISTRATION_DONE
967 };
968
969 struct flash_driver lpc2000_flash = {
970 .name = "lpc2000",
971 .commands = lpc2000_command_handlers,
972 .flash_bank_command = lpc2000_flash_bank_command,
973 .erase = lpc2000_erase,
974 .protect = lpc2000_protect,
975 .write = lpc2000_write,
976 .read = default_flash_read,
977 .probe = lpc2000_probe,
978 .auto_probe = lpc2000_probe,
979 .erase_check = lpc2000_erase_check,
980 .protect_check = lpc2000_protect_check,
981 .info = get_lpc2000_info,
982 };
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