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flash: fix at91sam3/4 driver typos
[openocd/cederom.git] / src / flash / nor / at91sam4.c
blob1cfe28f2160daac60cc4426dec5574c6be8f6c97
1 /***************************************************************************
2 * Copyright (C) 2009 by Duane Ellis *
3 * openocd@duaneellis.com *
4 * *
5 * Copyright (C) 2010 by Olaf Lüke (at91sam3s* support) *
6 * olaf@uni-paderborn.de *
7 * *
8 * Copyright (C) 2011 by Olivier Schonken, Jim Norris *
9 * (at91sam3x* & at91sam4 support)* *
10 * *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
15 * *
16 * This program is distributed in the hope that it will be useful, *
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
18 * MERCHANTABILITY or FITNESS for A PARTICULAR PURPOSE. See the *
19 * GNU General public License for more details. *
20 * *
21 * You should have received a copy of the GNU General public License *
22 * along with this program; if not, write to the *
23 * Free Software Foundation, Inc., *
24 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
25 ****************************************************************************/
26
27 /* Some of the the lower level code was based on code supplied by
28 * ATMEL under this copyright. */
29
30 /* BEGIN ATMEL COPYRIGHT */
31 /* ----------------------------------------------------------------------------
32 * ATMEL Microcontroller Software Support
33 * ----------------------------------------------------------------------------
34 * Copyright (c) 2009, Atmel Corporation
35 *
36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions are met:
40 *
41 * - Redistributions of source code must retain the above copyright notice,
42 * this list of conditions and the disclaimer below.
43 *
44 * Atmel's name may not be used to endorse or promote products derived from
45 * this software without specific prior written permission.
46 *
47 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
48 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
49 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
50 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
51 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
52 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
53 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
54 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
55 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
56 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
57 * ----------------------------------------------------------------------------
58 */
59 /* END ATMEL COPYRIGHT */
60
61 #ifdef HAVE_CONFIG_H
62 #include "config.h"
63 #endif
64
65 #include "imp.h"
66 #include <helper/time_support.h>
67
68 #define REG_NAME_WIDTH (12)
69
70 /* at91sam4s series (has always one flash bank)*/
71 #define FLASH_BANK_BASE_S 0x00400000
72
73 #define AT91C_EFC_FCMD_GETD (0x0) /* (EFC) Get Flash Descriptor */
74 #define AT91C_EFC_FCMD_WP (0x1) /* (EFC) Write Page */
75 #define AT91C_EFC_FCMD_WPL (0x2) /* (EFC) Write Page and Lock */
76 #define AT91C_EFC_FCMD_EWP (0x3) /* (EFC) Erase Page and Write Page */
77 #define AT91C_EFC_FCMD_EWPL (0x4) /* (EFC) Erase Page and Write Page then Lock */
78 #define AT91C_EFC_FCMD_EA (0x5) /* (EFC) Erase All */
79 /* cmd6 is not present in the at91sam4u4/2/1 data sheet table 19-2 */
80 /* #define AT91C_EFC_FCMD_EPL (0x6) // (EFC) Erase plane? */
81 #define AT91C_EFC_FCMD_EPA (0x7) /* (EFC) Erase pages */
82 #define AT91C_EFC_FCMD_SLB (0x8) /* (EFC) Set Lock Bit */
83 #define AT91C_EFC_FCMD_CLB (0x9) /* (EFC) Clear Lock Bit */
84 #define AT91C_EFC_FCMD_GLB (0xA) /* (EFC) Get Lock Bit */
85 #define AT91C_EFC_FCMD_SFB (0xB) /* (EFC) Set Fuse Bit */
86 #define AT91C_EFC_FCMD_CFB (0xC) /* (EFC) Clear Fuse Bit */
87 #define AT91C_EFC_FCMD_GFB (0xD) /* (EFC) Get Fuse Bit */
88 #define AT91C_EFC_FCMD_STUI (0xE) /* (EFC) Start Read Unique ID */
89 #define AT91C_EFC_FCMD_SPUI (0xF) /* (EFC) Stop Read Unique ID */
90
91 #define offset_EFC_FMR 0
92 #define offset_EFC_FCR 4
93 #define offset_EFC_FSR 8
94 #define offset_EFC_FRR 12
95
96 extern struct flash_driver at91sam4_flash;
97
98 static float _tomhz(uint32_t freq_hz)
99 {
100 float f;
101
102 f = ((float)(freq_hz)) / 1000000.0;
103 return f;
104 }
105
106 /* How the chip is configured. */
107 struct sam4_cfg {
108 uint32_t unique_id[4];
109
110 uint32_t slow_freq;
111 uint32_t rc_freq;
112 uint32_t mainosc_freq;
113 uint32_t plla_freq;
114 uint32_t mclk_freq;
115 uint32_t cpu_freq;
116 uint32_t fclk_freq;
117 uint32_t pclk0_freq;
118 uint32_t pclk1_freq;
119 uint32_t pclk2_freq;
120
121
122 #define SAM4_CHIPID_CIDR (0x400E0740)
123 uint32_t CHIPID_CIDR;
124 #define SAM4_CHIPID_EXID (0x400E0744)
125 uint32_t CHIPID_EXID;
126
127 #define SAM4_PMC_BASE (0x400E0400)
128 #define SAM4_PMC_SCSR (SAM4_PMC_BASE + 0x0008)
129 uint32_t PMC_SCSR;
130 #define SAM4_PMC_PCSR (SAM4_PMC_BASE + 0x0018)
131 uint32_t PMC_PCSR;
132 #define SAM4_CKGR_UCKR (SAM4_PMC_BASE + 0x001c)
133 uint32_t CKGR_UCKR;
134 #define SAM4_CKGR_MOR (SAM4_PMC_BASE + 0x0020)
135 uint32_t CKGR_MOR;
136 #define SAM4_CKGR_MCFR (SAM4_PMC_BASE + 0x0024)
137 uint32_t CKGR_MCFR;
138 #define SAM4_CKGR_PLLAR (SAM4_PMC_BASE + 0x0028)
139 uint32_t CKGR_PLLAR;
140 #define SAM4_PMC_MCKR (SAM4_PMC_BASE + 0x0030)
141 uint32_t PMC_MCKR;
142 #define SAM4_PMC_PCK0 (SAM4_PMC_BASE + 0x0040)
143 uint32_t PMC_PCK0;
144 #define SAM4_PMC_PCK1 (SAM4_PMC_BASE + 0x0044)
145 uint32_t PMC_PCK1;
146 #define SAM4_PMC_PCK2 (SAM4_PMC_BASE + 0x0048)
147 uint32_t PMC_PCK2;
148 #define SAM4_PMC_SR (SAM4_PMC_BASE + 0x0068)
149 uint32_t PMC_SR;
150 #define SAM4_PMC_IMR (SAM4_PMC_BASE + 0x006c)
151 uint32_t PMC_IMR;
152 #define SAM4_PMC_FSMR (SAM4_PMC_BASE + 0x0070)
153 uint32_t PMC_FSMR;
154 #define SAM4_PMC_FSPR (SAM4_PMC_BASE + 0x0074)
155 uint32_t PMC_FSPR;
156 };
157
158 struct sam4_bank_private {
159 int probed;
160 /* DANGER: THERE ARE DRAGONS HERE.. */
161 /* NOTE: If you add more 'ghost' pointers */
162 /* be aware that you must *manually* update */
163 /* these pointers in the function sam4_GetDetails() */
164 /* See the comment "Here there be dragons" */
165
166 /* so we can find the chip we belong to */
167 struct sam4_chip *pChip;
168 /* so we can find the original bank pointer */
169 struct flash_bank *pBank;
170 unsigned bank_number;
171 uint32_t controller_address;
172 uint32_t base_address;
173 uint32_t flash_wait_states;
174 bool present;
175 unsigned size_bytes;
176 unsigned nsectors;
177 unsigned sector_size;
178 unsigned page_size;
179 };
180
181 struct sam4_chip_details {
182 /* THERE ARE DRAGONS HERE.. */
183 /* note: If you add pointers here */
184 /* be careful about them as they */
185 /* may need to be updated inside */
186 /* the function: "sam4_GetDetails() */
187 /* which copy/overwrites the */
188 /* 'runtime' copy of this structure */
189 uint32_t chipid_cidr;
190 const char *name;
191
192 unsigned n_gpnvms;
193 #define SAM4_N_NVM_BITS 3
194 unsigned gpnvm[SAM4_N_NVM_BITS];
195 unsigned total_flash_size;
196 unsigned total_sram_size;
197 unsigned n_banks;
198 #define SAM4_MAX_FLASH_BANKS 2
199 /* these are "initialized" from the global const data */
200 struct sam4_bank_private bank[SAM4_MAX_FLASH_BANKS];
201 };
202
203 struct sam4_chip {
204 struct sam4_chip *next;
205 int probed;
206
207 /* this is "initialized" from the global const structure */
208 struct sam4_chip_details details;
209 struct target *target;
210 struct sam4_cfg cfg;
211 };
212
213
214 struct sam4_reg_list {
215 uint32_t address; size_t struct_offset; const char *name;
216 void (*explain_func)(struct sam4_chip *pInfo);
217 };
218
219 static struct sam4_chip *all_sam4_chips;
220
221 static struct sam4_chip *get_current_sam4(struct command_context *cmd_ctx)
222 {
223 struct target *t;
224 static struct sam4_chip *p;
225
226 t = get_current_target(cmd_ctx);
227 if (!t) {
228 command_print(cmd_ctx, "No current target?");
229 return NULL;
230 }
231
232 p = all_sam4_chips;
233 if (!p) {
234 /* this should not happen */
235 /* the command is not registered until the chip is created? */
236 command_print(cmd_ctx, "No SAM4 chips exist?");
237 return NULL;
238 }
239
240 while (p) {
241 if (p->target == t)
242 return p;
243 p = p->next;
244 }
245 command_print(cmd_ctx, "Cannot find SAM4 chip?");
246 return NULL;
247 }
248
249 /*The actual sector size of the SAM4S flash memory is 65536 bytes. 16 sectors for a 1024KB device*/
250 /*The lockregions are 8KB per lock region, with a 1024KB device having 128 lock regions. */
251 /*For the best results, nsectors are thus set to the amount of lock regions, and the sector_size*/
252 /*set to the lock region size. Page erases are used to erase 8KB sections when programming*/
253
254 /* these are used to *initialize* the "pChip->details" structure. */
255 static const struct sam4_chip_details all_sam4_details[] = {
256 /* Start at91sam4s* series */
257 /*atsam4s16c - LQFP100/BGA100*/
258 {
259 .chipid_cidr = 0x28AC0CE0,
260 .name = "at91sam4s16c",
261 .total_flash_size = 1024 * 1024,
262 .total_sram_size = 128 * 1024,
263 .n_gpnvms = 2,
264 .n_banks = 1,
265 {
266 /* .bank[0] = {*/
267 {
268 .probed = 0,
269 .pChip = NULL,
270 .pBank = NULL,
271 .bank_number = 0,
272 .base_address = FLASH_BANK_BASE_S,
273 .controller_address = 0x400e0a00,
274 .flash_wait_states = 6, /* workaround silicon bug */
275 .present = 1,
276 .size_bytes = 1024 * 1024,
277 .nsectors = 128,
278 .sector_size = 8192,
279 .page_size = 512,
280 },
281 /* .bank[1] = {*/
282 {
283 .present = 0,
284 .probed = 0,
285 .bank_number = 1,
286
287 },
288 },
289 },
290 /*atsam4s16b - LQFP64/QFN64*/
291 {
292 .chipid_cidr = 0x289C0CE0,
293 .name = "at91sam4s16b",
294 .total_flash_size = 1024 * 1024,
295 .total_sram_size = 128 * 1024,
296 .n_gpnvms = 2,
297 .n_banks = 1,
298 {
299 /* .bank[0] = {*/
300 {
301 .probed = 0,
302 .pChip = NULL,
303 .pBank = NULL,
304 .bank_number = 0,
305 .base_address = FLASH_BANK_BASE_S,
306 .controller_address = 0x400e0a00,
307 .flash_wait_states = 6, /* workaround silicon bug */
308 .present = 1,
309 .size_bytes = 1024 * 1024,
310 .nsectors = 128,
311 .sector_size = 8192,
312 .page_size = 512,
313 },
314 /* .bank[1] = {*/
315 {
316 .present = 0,
317 .probed = 0,
318 .bank_number = 1,
319
320 },
321 },
322 },
323 /*atsam4s16a - LQFP48/QFN48*/
324 {
325 .chipid_cidr = 0x288C0CE0,
326 .name = "at91sam4s16a",
327 .total_flash_size = 1024 * 1024,
328 .total_sram_size = 128 * 1024,
329 .n_gpnvms = 2,
330 .n_banks = 1,
331 {
332 /* .bank[0] = {*/
333 {
334 .probed = 0,
335 .pChip = NULL,
336 .pBank = NULL,
337 .bank_number = 0,
338 .base_address = FLASH_BANK_BASE_S,
339 .controller_address = 0x400e0a00,
340 .flash_wait_states = 6, /* workaround silicon bug */
341 .present = 1,
342 .size_bytes = 1024 * 1024,
343 .nsectors = 128,
344 .sector_size = 8192,
345 .page_size = 512,
346 },
347 /* .bank[1] = {*/
348 {
349 .present = 0,
350 .probed = 0,
351 .bank_number = 1,
352
353 },
354 },
355 },
356 /*atsam4s8c - LQFP100/BGA100*/
357 {
358 .chipid_cidr = 0x28AC0AE0,
359 .name = "at91sam4s8c",
360 .total_flash_size = 512 * 1024,
361 .total_sram_size = 128 * 1024,
362 .n_gpnvms = 2,
363 .n_banks = 1,
364 {
365 /* .bank[0] = {*/
366 {
367 .probed = 0,
368 .pChip = NULL,
369 .pBank = NULL,
370 .bank_number = 0,
371 .base_address = FLASH_BANK_BASE_S,
372 .controller_address = 0x400e0a00,
373 .flash_wait_states = 6, /* workaround silicon bug */
374 .present = 1,
375 .size_bytes = 512 * 1024,
376 .nsectors = 64,
377 .sector_size = 8192,
378 .page_size = 512,
379 },
380 /* .bank[1] = {*/
381 {
382 .present = 0,
383 .probed = 0,
384 .bank_number = 1,
385
386 },
387 },
388 },
389 /*atsam4s8b - LQFP64/BGA64*/
390 {
391 .chipid_cidr = 0x289C0AE0,
392 .name = "at91sam4s8b",
393 .total_flash_size = 512 * 1024,
394 .total_sram_size = 128 * 1024,
395 .n_gpnvms = 2,
396 .n_banks = 1,
397 {
398 /* .bank[0] = {*/
399 {
400 .probed = 0,
401 .pChip = NULL,
402 .pBank = NULL,
403 .bank_number = 0,
404 .base_address = FLASH_BANK_BASE_S,
405 .controller_address = 0x400e0a00,
406 .flash_wait_states = 6, /* workaround silicon bug */
407 .present = 1,
408 .size_bytes = 512 * 1024,
409 .nsectors = 64,
410 .sector_size = 8192,
411 .page_size = 512,
412 },
413 /* .bank[1] = {*/
414 {
415 .present = 0,
416 .probed = 0,
417 .bank_number = 1,
418
419 },
420 },
421 },
422 /*atsam4s8a - LQFP48/BGA48*/
423 {
424 .chipid_cidr = 0x288C0AE0,
425 .name = "at91sam4s8a",
426 .total_flash_size = 512 * 1024,
427 .total_sram_size = 128 * 1024,
428 .n_gpnvms = 2,
429 .n_banks = 1,
430 {
431 /* .bank[0] = {*/
432 {
433 .probed = 0,
434 .pChip = NULL,
435 .pBank = NULL,
436 .bank_number = 0,
437 .base_address = FLASH_BANK_BASE_S,
438 .controller_address = 0x400e0a00,
439 .flash_wait_states = 6, /* workaround silicon bug */
440 .present = 1,
441 .size_bytes = 512 * 1024,
442 .nsectors = 64,
443 .sector_size = 8192,
444 .page_size = 512,
445 },
446 /* .bank[1] = {*/
447 {
448 .present = 0,
449 .probed = 0,
450 .bank_number = 1,
451
452 },
453 },
454 },
455 /* terminate */
456 {
457 .chipid_cidr = 0,
458 .name = NULL,
459 }
460 };
461
462 /* Globals above */
463 /***********************************************************************
464 **********************************************************************
465 **********************************************************************
466 **********************************************************************
467 **********************************************************************
468 **********************************************************************/
469 /* *ATMEL* style code - from the SAM4 driver code */
470
471 /**
472 * Get the current status of the EEFC and
473 * the value of some status bits (LOCKE, PROGE).
474 * @param pPrivate - info about the bank
475 * @param v - result goes here
476 */
477 static int EFC_GetStatus(struct sam4_bank_private *pPrivate, uint32_t *v)
478 {
479 int r;
480 r = target_read_u32(pPrivate->pChip->target,
481 pPrivate->controller_address + offset_EFC_FSR,
482 v);
483 LOG_DEBUG("Status: 0x%08x (lockerror: %d, cmderror: %d, ready: %d)",
484 (unsigned int)(*v),
485 ((unsigned int)((*v >> 2) & 1)),
486 ((unsigned int)((*v >> 1) & 1)),
487 ((unsigned int)((*v >> 0) & 1)));
488
489 return r;
490 }
491
492 /**
493 * Get the result of the last executed command.
494 * @param pPrivate - info about the bank
495 * @param v - result goes here
496 */
497 static int EFC_GetResult(struct sam4_bank_private *pPrivate, uint32_t *v)
498 {
499 int r;
500 uint32_t rv;
501 r = target_read_u32(pPrivate->pChip->target,
502 pPrivate->controller_address + offset_EFC_FRR,
503 &rv);
504 if (v)
505 *v = rv;
506 LOG_DEBUG("Result: 0x%08x", ((unsigned int)(rv)));
507 return r;
508 }
509
510 static int EFC_StartCommand(struct sam4_bank_private *pPrivate,
511 unsigned command, unsigned argument)
512 {
513 uint32_t n, v;
514 int r;
515 int retry;
516
517 retry = 0;
518 do_retry:
519
520 /* Check command & argument */
521 switch (command) {
522
523 case AT91C_EFC_FCMD_WP:
524 case AT91C_EFC_FCMD_WPL:
525 case AT91C_EFC_FCMD_EWP:
526 case AT91C_EFC_FCMD_EWPL:
527 /* case AT91C_EFC_FCMD_EPL: */
528 case AT91C_EFC_FCMD_EPA:
529 case AT91C_EFC_FCMD_SLB:
530 case AT91C_EFC_FCMD_CLB:
531 n = (pPrivate->size_bytes / pPrivate->page_size);
532 if (argument >= n)
533 LOG_ERROR("*BUG*: Embedded flash has only %u pages", (unsigned)(n));
534 break;
535
536 case AT91C_EFC_FCMD_SFB:
537 case AT91C_EFC_FCMD_CFB:
538 if (argument >= pPrivate->pChip->details.n_gpnvms) {
539 LOG_ERROR("*BUG*: Embedded flash has only %d GPNVMs",
540 pPrivate->pChip->details.n_gpnvms);
541 }
542 break;
543
544 case AT91C_EFC_FCMD_GETD:
545 case AT91C_EFC_FCMD_EA:
546 case AT91C_EFC_FCMD_GLB:
547 case AT91C_EFC_FCMD_GFB:
548 case AT91C_EFC_FCMD_STUI:
549 case AT91C_EFC_FCMD_SPUI:
550 if (argument != 0)
551 LOG_ERROR("Argument is meaningless for cmd: %d", command);
552 break;
553 default:
554 LOG_ERROR("Unknown command %d", command);
555 break;
556 }
557
558 if (command == AT91C_EFC_FCMD_SPUI) {
559 /* this is a very special situation. */
560 /* Situation (1) - error/retry - see below */
561 /* And we are being called recursively */
562 /* Situation (2) - normal, finished reading unique id */
563 } else {
564 /* it should be "ready" */
565 EFC_GetStatus(pPrivate, &v);
566 if (v & 1) {
567 /* then it is ready */
568 /* we go on */
569 } else {
570 if (retry) {
571 /* we have done this before */
572 /* the controller is not responding. */
573 LOG_ERROR("flash controller(%d) is not ready! Error",
574 pPrivate->bank_number);
575 return ERROR_FAIL;
576 } else {
577 retry++;
578 LOG_ERROR("Flash controller(%d) is not ready, attempting reset",
579 pPrivate->bank_number);
580 /* we do that by issuing the *STOP* command */
581 EFC_StartCommand(pPrivate, AT91C_EFC_FCMD_SPUI, 0);
582 /* above is recursive, and further recursion is blocked by */
583 /* if (command == AT91C_EFC_FCMD_SPUI) above */
584 goto do_retry;
585 }
586 }
587 }
588
589 v = (0x5A << 24) | (argument << 8) | command;
590 LOG_DEBUG("Command: 0x%08x", ((unsigned int)(v)));
591 r = target_write_u32(pPrivate->pBank->target,
592 pPrivate->controller_address + offset_EFC_FCR, v);
593 if (r != ERROR_OK)
594 LOG_DEBUG("Error Write failed");
595 return r;
596 }
597
598 /**
599 * Performs the given command and wait until its completion (or an error).
600 * @param pPrivate - info about the bank
601 * @param command - Command to perform.
602 * @param argument - Optional command argument.
603 * @param status - put command status bits here
604 */
605 static int EFC_PerformCommand(struct sam4_bank_private *pPrivate,
606 unsigned command,
607 unsigned argument,
608 uint32_t *status)
609 {
610
611 int r;
612 uint32_t v;
613 long long ms_now, ms_end;
614
615 /* default */
616 if (status)
617 *status = 0;
618
619 r = EFC_StartCommand(pPrivate, command, argument);
620 if (r != ERROR_OK)
621 return r;
622
623 ms_end = 10000 + timeval_ms();
624
625 do {
626 r = EFC_GetStatus(pPrivate, &v);
627 if (r != ERROR_OK)
628 return r;
629 ms_now = timeval_ms();
630 if (ms_now > ms_end) {
631 /* error */
632 LOG_ERROR("Command timeout");
633 return ERROR_FAIL;
634 }
635 } while ((v & 1) == 0);
636
637 /* error bits.. */
638 if (status)
639 *status = (v & 0x6);
640 return ERROR_OK;
641
642 }
643
644 /**
645 * Read the unique ID.
646 * @param pPrivate - info about the bank
647 * The unique ID is stored in the 'pPrivate' structure.
648 */
649 static int FLASHD_ReadUniqueID(struct sam4_bank_private *pPrivate)
650 {
651 int r;
652 uint32_t v;
653 int x;
654 /* assume 0 */
655 pPrivate->pChip->cfg.unique_id[0] = 0;
656 pPrivate->pChip->cfg.unique_id[1] = 0;
657 pPrivate->pChip->cfg.unique_id[2] = 0;
658 pPrivate->pChip->cfg.unique_id[3] = 0;
659
660 LOG_DEBUG("Begin");
661 r = EFC_StartCommand(pPrivate, AT91C_EFC_FCMD_STUI, 0);
662 if (r < 0)
663 return r;
664
665 for (x = 0; x < 4; x++) {
666 r = target_read_u32(pPrivate->pChip->target,
667 pPrivate->pBank->base + (x * 4),
668 &v);
669 if (r < 0)
670 return r;
671 pPrivate->pChip->cfg.unique_id[x] = v;
672 }
673
674 r = EFC_PerformCommand(pPrivate, AT91C_EFC_FCMD_SPUI, 0, NULL);
675 LOG_DEBUG("End: R=%d, id = 0x%08x, 0x%08x, 0x%08x, 0x%08x",
676 r,
677 (unsigned int)(pPrivate->pChip->cfg.unique_id[0]),
678 (unsigned int)(pPrivate->pChip->cfg.unique_id[1]),
679 (unsigned int)(pPrivate->pChip->cfg.unique_id[2]),
680 (unsigned int)(pPrivate->pChip->cfg.unique_id[3]));
681 return r;
682
683 }
684
685 /**
686 * Erases the entire flash.
687 * @param pPrivate - the info about the bank.
688 */
689 static int FLASHD_EraseEntireBank(struct sam4_bank_private *pPrivate)
690 {
691 LOG_DEBUG("Here");
692 return EFC_PerformCommand(pPrivate, AT91C_EFC_FCMD_EA, 0, NULL);
693 }
694
695 /**
696 * Erases the entire flash.
697 * @param pPrivate - the info about the bank.
698 */
699 static int FLASHD_ErasePages(struct sam4_bank_private *pPrivate,
700 int firstPage,
701 int numPages,
702 uint32_t *status)
703 {
704 LOG_DEBUG("Here");
705 uint8_t erasePages;
706 switch (numPages) {
707 case 4:
708 erasePages = 0x00;
709 break;
710 case 8:
711 erasePages = 0x01;
712 break;
713 case 16:
714 erasePages = 0x02;
715 break;
716 case 32:
717 erasePages = 0x03;
718 break;
719 default:
720 erasePages = 0x00;
721 break;
722 }
723
724 /* AT91C_EFC_FCMD_EPA
725 * According to the datasheet FARG[15:2] defines the page from which
726 * the erase will start.This page must be modulo 4, 8, 16 or 32
727 * according to the number of pages to erase. FARG[1:0] defines the
728 * number of pages to be erased. Previously (firstpage << 2) was used
729 * to conform to this, seems it should not be shifted...
730 */
731 return EFC_PerformCommand(pPrivate,
732 /* send Erase Page */
733 AT91C_EFC_FCMD_EPA,
734 (firstPage) | erasePages,
735 status);
736 }
737
738 /**
739 * Gets current GPNVM state.
740 * @param pPrivate - info about the bank.
741 * @param gpnvm - GPNVM bit index.
742 * @param puthere - result stored here.
743 */
744 /* ------------------------------------------------------------------------------ */
745 static int FLASHD_GetGPNVM(struct sam4_bank_private *pPrivate, unsigned gpnvm, unsigned *puthere)
746 {
747 uint32_t v;
748 int r;
749
750 LOG_DEBUG("Here");
751 if (pPrivate->bank_number != 0) {
752 LOG_ERROR("GPNVM only works with Bank0");
753 return ERROR_FAIL;
754 }
755
756 if (gpnvm >= pPrivate->pChip->details.n_gpnvms) {
757 LOG_ERROR("Invalid GPNVM %d, max: %d, ignored",
758 gpnvm, pPrivate->pChip->details.n_gpnvms);
759 return ERROR_FAIL;
760 }
761
762 /* Get GPNVMs status */
763 r = EFC_PerformCommand(pPrivate, AT91C_EFC_FCMD_GFB, 0, NULL);
764 if (r != ERROR_OK) {
765 LOG_ERROR("Failed");
766 return r;
767 }
768
769 r = EFC_GetResult(pPrivate, &v);
770
771 if (puthere) {
772 /* Check if GPNVM is set */
773 /* get the bit and make it a 0/1 */
774 *puthere = (v >> gpnvm) & 1;
775 }
776
777 return r;
778 }
779
780 /**
781 * Clears the selected GPNVM bit.
782 * @param pPrivate info about the bank
783 * @param gpnvm GPNVM index.
784 * @returns 0 if successful; otherwise returns an error code.
785 */
786 static int FLASHD_ClrGPNVM(struct sam4_bank_private *pPrivate, unsigned gpnvm)
787 {
788 int r;
789 unsigned v;
790
791 LOG_DEBUG("Here");
792 if (pPrivate->bank_number != 0) {
793 LOG_ERROR("GPNVM only works with Bank0");
794 return ERROR_FAIL;
795 }
796
797 if (gpnvm >= pPrivate->pChip->details.n_gpnvms) {
798 LOG_ERROR("Invalid GPNVM %d, max: %d, ignored",
799 gpnvm, pPrivate->pChip->details.n_gpnvms);
800 return ERROR_FAIL;
801 }
802
803 r = FLASHD_GetGPNVM(pPrivate, gpnvm, &v);
804 if (r != ERROR_OK) {
805 LOG_DEBUG("Failed: %d", r);
806 return r;
807 }
808 r = EFC_PerformCommand(pPrivate, AT91C_EFC_FCMD_CFB, gpnvm, NULL);
809 LOG_DEBUG("End: %d", r);
810 return r;
811 }
812
813 /**
814 * Sets the selected GPNVM bit.
815 * @param pPrivate info about the bank
816 * @param gpnvm GPNVM index.
817 */
818 static int FLASHD_SetGPNVM(struct sam4_bank_private *pPrivate, unsigned gpnvm)
819 {
820 int r;
821 unsigned v;
822
823 if (pPrivate->bank_number != 0) {
824 LOG_ERROR("GPNVM only works with Bank0");
825 return ERROR_FAIL;
826 }
827
828 if (gpnvm >= pPrivate->pChip->details.n_gpnvms) {
829 LOG_ERROR("Invalid GPNVM %d, max: %d, ignored",
830 gpnvm, pPrivate->pChip->details.n_gpnvms);
831 return ERROR_FAIL;
832 }
833
834 r = FLASHD_GetGPNVM(pPrivate, gpnvm, &v);
835 if (r != ERROR_OK)
836 return r;
837 if (v) {
838 /* already set */
839 r = ERROR_OK;
840 } else {
841 /* set it */
842 r = EFC_PerformCommand(pPrivate, AT91C_EFC_FCMD_SFB, gpnvm, NULL);
843 }
844 return r;
845 }
846
847 /**
848 * Returns a bit field (at most 64) of locked regions within a page.
849 * @param pPrivate info about the bank
850 * @param v where to store locked bits
851 */
852 static int FLASHD_GetLockBits(struct sam4_bank_private *pPrivate, uint32_t *v)
853 {
854 int r;
855 LOG_DEBUG("Here");
856 r = EFC_PerformCommand(pPrivate, AT91C_EFC_FCMD_GLB, 0, NULL);
857 if (r == ERROR_OK) {
858 EFC_GetResult(pPrivate, v);
859 EFC_GetResult(pPrivate, v);
860 EFC_GetResult(pPrivate, v);
861 r = EFC_GetResult(pPrivate, v);
862 }
863 LOG_DEBUG("End: %d", r);
864 return r;
865 }
866
867 /**
868 * Unlocks all the regions in the given address range.
869 * @param pPrivate info about the bank
870 * @param start_sector first sector to unlock
871 * @param end_sector last (inclusive) to unlock
872 */
873
874 static int FLASHD_Unlock(struct sam4_bank_private *pPrivate,
875 unsigned start_sector,
876 unsigned end_sector)
877 {
878 int r;
879 uint32_t status;
880 uint32_t pg;
881 uint32_t pages_per_sector;
882
883 pages_per_sector = pPrivate->sector_size / pPrivate->page_size;
884
885 /* Unlock all pages */
886 while (start_sector <= end_sector) {
887 pg = start_sector * pages_per_sector;
888
889 r = EFC_PerformCommand(pPrivate, AT91C_EFC_FCMD_CLB, pg, &status);
890 if (r != ERROR_OK)
891 return r;
892 start_sector++;
893 }
894
895 return ERROR_OK;
896 }
897
898 /**
899 * Locks regions
900 * @param pPrivate - info about the bank
901 * @param start_sector - first sector to lock
902 * @param end_sector - last sector (inclusive) to lock
903 */
904 static int FLASHD_Lock(struct sam4_bank_private *pPrivate,
905 unsigned start_sector,
906 unsigned end_sector)
907 {
908 uint32_t status;
909 uint32_t pg;
910 uint32_t pages_per_sector;
911 int r;
912
913 pages_per_sector = pPrivate->sector_size / pPrivate->page_size;
914
915 /* Lock all pages */
916 while (start_sector <= end_sector) {
917 pg = start_sector * pages_per_sector;
918
919 r = EFC_PerformCommand(pPrivate, AT91C_EFC_FCMD_SLB, pg, &status);
920 if (r != ERROR_OK)
921 return r;
922 start_sector++;
923 }
924 return ERROR_OK;
925 }
926
927 /****** END SAM4 CODE ********/
928
929 /* begin helpful debug code */
930 /* print the fieldname, the field value, in dec & hex, and return field value */
931 static uint32_t sam4_reg_fieldname(struct sam4_chip *pChip,
932 const char *regname,
933 uint32_t value,
934 unsigned shift,
935 unsigned width)
936 {
937 uint32_t v;
938 int hwidth, dwidth;
939
940
941 /* extract the field */
942 v = value >> shift;
943 v = v & ((1 << width)-1);
944 if (width <= 16) {
945 hwidth = 4;
946 dwidth = 5;
947 } else {
948 hwidth = 8;
949 dwidth = 12;
950 }
951
952 /* show the basics */
953 LOG_USER_N("\t%*s: %*d [0x%0*x] ",
954 REG_NAME_WIDTH, regname,
955 dwidth, v,
956 hwidth, v);
957 return v;
958 }
959
960 static const char _unknown[] = "unknown";
961 static const char *const eproc_names[] = {
962 _unknown, /* 0 */
963 "arm946es", /* 1 */
964 "arm7tdmi", /* 2 */
965 "cortex-m3", /* 3 */
966 "arm920t", /* 4 */
967 "arm926ejs", /* 5 */
968 "cortex-a5", /* 6 */
969 "cortex-m4", /* 7 */
970 _unknown, /* 8 */
971 _unknown, /* 9 */
972 _unknown, /* 10 */
973 _unknown, /* 11 */
974 _unknown, /* 12 */
975 _unknown, /* 13 */
976 _unknown, /* 14 */
977 _unknown, /* 15 */
978 };
979
980 #define nvpsize2 nvpsize /* these two tables are identical */
981 static const char *const nvpsize[] = {
982 "none", /* 0 */
983 "8K bytes", /* 1 */
984 "16K bytes", /* 2 */
985 "32K bytes", /* 3 */
986 _unknown, /* 4 */
987 "64K bytes", /* 5 */
988 _unknown, /* 6 */
989 "128K bytes", /* 7 */
990 _unknown, /* 8 */
991 "256K bytes", /* 9 */
992 "512K bytes", /* 10 */
993 _unknown, /* 11 */
994 "1024K bytes", /* 12 */
995 _unknown, /* 13 */
996 "2048K bytes", /* 14 */
997 _unknown, /* 15 */
998 };
999
1000 static const char *const sramsize[] = {
1001 "48K Bytes", /* 0 */
1002 "1K Bytes", /* 1 */
1003 "2K Bytes", /* 2 */
1004 "6K Bytes", /* 3 */
1005 "112K Bytes", /* 4 */
1006 "4K Bytes", /* 5 */
1007 "80K Bytes", /* 6 */
1008 "160K Bytes", /* 7 */
1009 "8K Bytes", /* 8 */
1010 "16K Bytes", /* 9 */
1011 "32K Bytes", /* 10 */
1012 "64K Bytes", /* 11 */
1013 "128K Bytes", /* 12 */
1014 "256K Bytes", /* 13 */
1015 "96K Bytes", /* 14 */
1016 "512K Bytes", /* 15 */
1017
1018 };
1019
1020 static const struct archnames { unsigned value; const char *name; } archnames[] = {
1021 { 0x19, "AT91SAM9xx Series" },
1022 { 0x29, "AT91SAM9XExx Series" },
1023 { 0x34, "AT91x34 Series" },
1024 { 0x37, "CAP7 Series" },
1025 { 0x39, "CAP9 Series" },
1026 { 0x3B, "CAP11 Series" },
1027 { 0x40, "AT91x40 Series" },
1028 { 0x42, "AT91x42 Series" },
1029 { 0x55, "AT91x55 Series" },
1030 { 0x60, "AT91SAM7Axx Series" },
1031 { 0x61, "AT91SAM7AQxx Series" },
1032 { 0x63, "AT91x63 Series" },
1033 { 0x70, "AT91SAM7Sxx Series" },
1034 { 0x71, "AT91SAM7XCxx Series" },
1035 { 0x72, "AT91SAM7SExx Series" },
1036 { 0x73, "AT91SAM7Lxx Series" },
1037 { 0x75, "AT91SAM7Xxx Series" },
1038 { 0x76, "AT91SAM7SLxx Series" },
1039 { 0x80, "ATSAM3UxC Series (100-pin version)" },
1040 { 0x81, "ATSAM3UxE Series (144-pin version)" },
1041 { 0x83, "ATSAM3A/SAM4A xC Series (100-pin version)"},
1042 { 0x84, "ATSAM3X/SAM4X xC Series (100-pin version)"},
1043 { 0x85, "ATSAM3X/SAM4X xE Series (144-pin version)"},
1044 { 0x86, "ATSAM3X/SAM4X xG Series (208/217-pin version)" },
1045 { 0x88, "ATSAM3S/SAM4S xA Series (48-pin version)" },
1046 { 0x89, "ATSAM3S/SAM4S xB Series (64-pin version)" },
1047 { 0x8A, "ATSAM3S/SAM4S xC Series (100-pin version)"},
1048 { 0x92, "AT91x92 Series" },
1049 { 0x93, "ATSAM3NxA Series (48-pin version)" },
1050 { 0x94, "ATSAM3NxB Series (64-pin version)" },
1051 { 0x95, "ATSAM3NxC Series (100-pin version)" },
1052 { 0x98, "ATSAM3SDxA Series (48-pin version)" },
1053 { 0x99, "ATSAM3SDxB Series (64-pin version)" },
1054 { 0x9A, "ATSAM3SDxC Series (100-pin version)" },
1055 { 0xA5, "ATSAM5A" },
1056 { 0xF0, "AT75Cxx Series" },
1057 { -1, NULL },
1058 };
1059
1060 static const char *const nvptype[] = {
1061 "rom", /* 0 */
1062 "romless or onchip flash", /* 1 */
1063 "embedded flash memory",/* 2 */
1064 "rom(nvpsiz) + embedded flash (nvpsiz2)", /* 3 */
1065 "sram emulating flash", /* 4 */
1066 _unknown, /* 5 */
1067 _unknown, /* 6 */
1068 _unknown, /* 7 */
1069 };
1070
1071 static const char *_yes_or_no(uint32_t v)
1072 {
1073 if (v)
1074 return "YES";
1075 else
1076 return "NO";
1077 }
1078
1079 static const char *const _rc_freq[] = {
1080 "4 MHz", "8 MHz", "12 MHz", "reserved"
1081 };
1082
1083 static void sam4_explain_ckgr_mor(struct sam4_chip *pChip)
1084 {
1085 uint32_t v;
1086 uint32_t rcen;
1087
1088 v = sam4_reg_fieldname(pChip, "MOSCXTEN", pChip->cfg.CKGR_MOR, 0, 1);
1089 LOG_USER("(main xtal enabled: %s)", _yes_or_no(v));
1090 v = sam4_reg_fieldname(pChip, "MOSCXTBY", pChip->cfg.CKGR_MOR, 1, 1);
1091 LOG_USER("(main osc bypass: %s)", _yes_or_no(v));
1092 rcen = sam4_reg_fieldname(pChip, "MOSCRCEN", pChip->cfg.CKGR_MOR, 3, 1);
1093 LOG_USER("(onchip RC-OSC enabled: %s)", _yes_or_no(rcen));
1094 v = sam4_reg_fieldname(pChip, "MOSCRCF", pChip->cfg.CKGR_MOR, 4, 3);
1095 LOG_USER("(onchip RC-OSC freq: %s)", _rc_freq[v]);
1096
1097 pChip->cfg.rc_freq = 0;
1098 if (rcen) {
1099 switch (v) {
1100 default:
1101 pChip->cfg.rc_freq = 0;
1102 break;
1103 case 0:
1104 pChip->cfg.rc_freq = 4 * 1000 * 1000;
1105 break;
1106 case 1:
1107 pChip->cfg.rc_freq = 8 * 1000 * 1000;
1108 break;
1109 case 2:
1110 pChip->cfg.rc_freq = 12 * 1000 * 1000;
1111 break;
1112 }
1113 }
1114
1115 v = sam4_reg_fieldname(pChip, "MOSCXTST", pChip->cfg.CKGR_MOR, 8, 8);
1116 LOG_USER("(startup clks, time= %f uSecs)",
1117 ((float)(v * 1000000)) / ((float)(pChip->cfg.slow_freq)));
1118 v = sam4_reg_fieldname(pChip, "MOSCSEL", pChip->cfg.CKGR_MOR, 24, 1);
1119 LOG_USER("(mainosc source: %s)",
1120 v ? "external xtal" : "internal RC");
1121
1122 v = sam4_reg_fieldname(pChip, "CFDEN", pChip->cfg.CKGR_MOR, 25, 1);
1123 LOG_USER("(clock failure enabled: %s)",
1124 _yes_or_no(v));
1125 }
1126
1127 static void sam4_explain_chipid_cidr(struct sam4_chip *pChip)
1128 {
1129 int x;
1130 uint32_t v;
1131 const char *cp;
1132
1133 sam4_reg_fieldname(pChip, "Version", pChip->cfg.CHIPID_CIDR, 0, 5);
1134 LOG_USER_N("\n");
1135
1136 v = sam4_reg_fieldname(pChip, "EPROC", pChip->cfg.CHIPID_CIDR, 5, 3);
1137 LOG_USER("%s", eproc_names[v]);
1138
1139 v = sam4_reg_fieldname(pChip, "NVPSIZE", pChip->cfg.CHIPID_CIDR, 8, 4);
1140 LOG_USER("%s", nvpsize[v]);
1141
1142 v = sam4_reg_fieldname(pChip, "NVPSIZE2", pChip->cfg.CHIPID_CIDR, 12, 4);
1143 LOG_USER("%s", nvpsize2[v]);
1144
1145 v = sam4_reg_fieldname(pChip, "SRAMSIZE", pChip->cfg.CHIPID_CIDR, 16, 4);
1146 LOG_USER("%s", sramsize[v]);
1147
1148 v = sam4_reg_fieldname(pChip, "ARCH", pChip->cfg.CHIPID_CIDR, 20, 8);
1149 cp = _unknown;
1150 for (x = 0; archnames[x].name; x++) {
1151 if (v == archnames[x].value) {
1152 cp = archnames[x].name;
1153 break;
1154 }
1155 }
1156
1157 LOG_USER("%s", cp);
1158
1159 v = sam4_reg_fieldname(pChip, "NVPTYP", pChip->cfg.CHIPID_CIDR, 28, 3);
1160 LOG_USER("%s", nvptype[v]);
1161
1162 v = sam4_reg_fieldname(pChip, "EXTID", pChip->cfg.CHIPID_CIDR, 31, 1);
1163 LOG_USER("(exists: %s)", _yes_or_no(v));
1164 }
1165
1166 static void sam4_explain_ckgr_mcfr(struct sam4_chip *pChip)
1167 {
1168 uint32_t v;
1169
1170 v = sam4_reg_fieldname(pChip, "MAINFRDY", pChip->cfg.CKGR_MCFR, 16, 1);
1171 LOG_USER("(main ready: %s)", _yes_or_no(v));
1172
1173 v = sam4_reg_fieldname(pChip, "MAINF", pChip->cfg.CKGR_MCFR, 0, 16);
1174
1175 v = (v * pChip->cfg.slow_freq) / 16;
1176 pChip->cfg.mainosc_freq = v;
1177
1178 LOG_USER("(%3.03f Mhz (%d.%03dkhz slowclk)",
1179 _tomhz(v),
1180 pChip->cfg.slow_freq / 1000,
1181 pChip->cfg.slow_freq % 1000);
1182 }
1183
1184 static void sam4_explain_ckgr_plla(struct sam4_chip *pChip)
1185 {
1186 uint32_t mula, diva;
1187
1188 diva = sam4_reg_fieldname(pChip, "DIVA", pChip->cfg.CKGR_PLLAR, 0, 8);
1189 LOG_USER_N("\n");
1190 mula = sam4_reg_fieldname(pChip, "MULA", pChip->cfg.CKGR_PLLAR, 16, 11);
1191 LOG_USER_N("\n");
1192 pChip->cfg.plla_freq = 0;
1193 if (mula == 0)
1194 LOG_USER("\tPLLA Freq: (Disabled,mula = 0)");
1195 else if (diva == 0)
1196 LOG_USER("\tPLLA Freq: (Disabled,diva = 0)");
1197 else if (diva == 1) {
1198 pChip->cfg.plla_freq = (pChip->cfg.mainosc_freq * (mula + 1));
1199 LOG_USER("\tPLLA Freq: %3.03f MHz",
1200 _tomhz(pChip->cfg.plla_freq));
1201 }
1202 }
1203
1204 static void sam4_explain_mckr(struct sam4_chip *pChip)
1205 {
1206 uint32_t css, pres, fin = 0;
1207 int pdiv = 0;
1208 const char *cp = NULL;
1209
1210 css = sam4_reg_fieldname(pChip, "CSS", pChip->cfg.PMC_MCKR, 0, 2);
1211 switch (css & 3) {
1212 case 0:
1213 fin = pChip->cfg.slow_freq;
1214 cp = "slowclk";
1215 break;
1216 case 1:
1217 fin = pChip->cfg.mainosc_freq;
1218 cp = "mainosc";
1219 break;
1220 case 2:
1221 fin = pChip->cfg.plla_freq;
1222 cp = "plla";
1223 break;
1224 case 3:
1225 if (pChip->cfg.CKGR_UCKR & (1 << 16)) {
1226 fin = 480 * 1000 * 1000;
1227 cp = "upll";
1228 } else {
1229 fin = 0;
1230 cp = "upll (*ERROR* UPLL is disabled)";
1231 }
1232 break;
1233 default:
1234 assert(0);
1235 break;
1236 }
1237
1238 LOG_USER("%s (%3.03f Mhz)",
1239 cp,
1240 _tomhz(fin));
1241 pres = sam4_reg_fieldname(pChip, "PRES", pChip->cfg.PMC_MCKR, 4, 3);
1242 switch (pres & 0x07) {
1243 case 0:
1244 pdiv = 1;
1245 cp = "selected clock";
1246 break;
1247 case 1:
1248 pdiv = 2;
1249 cp = "clock/2";
1250 break;
1251 case 2:
1252 pdiv = 4;
1253 cp = "clock/4";
1254 break;
1255 case 3:
1256 pdiv = 8;
1257 cp = "clock/8";
1258 break;
1259 case 4:
1260 pdiv = 16;
1261 cp = "clock/16";
1262 break;
1263 case 5:
1264 pdiv = 32;
1265 cp = "clock/32";
1266 break;
1267 case 6:
1268 pdiv = 64;
1269 cp = "clock/64";
1270 break;
1271 case 7:
1272 pdiv = 6;
1273 cp = "clock/6";
1274 break;
1275 default:
1276 assert(0);
1277 break;
1278 }
1279 LOG_USER("(%s)", cp);
1280 fin = fin / pdiv;
1281 /* sam4 has a *SINGLE* clock - */
1282 /* other at91 series parts have divisors for these. */
1283 pChip->cfg.cpu_freq = fin;
1284 pChip->cfg.mclk_freq = fin;
1285 pChip->cfg.fclk_freq = fin;
1286 LOG_USER("\t\tResult CPU Freq: %3.03f",
1287 _tomhz(fin));
1288 }
1289
1290 #if 0
1291 static struct sam4_chip *target2sam4(struct target *pTarget)
1292 {
1293 struct sam4_chip *pChip;
1294
1295 if (pTarget == NULL)
1296 return NULL;
1297
1298 pChip = all_sam4_chips;
1299 while (pChip) {
1300 if (pChip->target == pTarget)
1301 break; /* return below */
1302 else
1303 pChip = pChip->next;
1304 }
1305 return pChip;
1306 }
1307 #endif
1308
1309 static uint32_t *sam4_get_reg_ptr(struct sam4_cfg *pCfg, const struct sam4_reg_list *pList)
1310 {
1311 /* this function exists to help */
1312 /* keep funky offsetof() errors */
1313 /* and casting from causing bugs */
1314
1315 /* By using prototypes - we can detect what would */
1316 /* be casting errors. */
1317
1318 return (uint32_t *)(void *)(((char *)(pCfg)) + pList->struct_offset);
1319 }
1320
1321
1322 #define SAM4_ENTRY(NAME, FUNC) { .address = SAM4_ ## NAME, .struct_offset = offsetof( \
1323 struct sam4_cfg, \
1324 NAME), # NAME, FUNC }
1325 static const struct sam4_reg_list sam4_all_regs[] = {
1326 SAM4_ENTRY(CKGR_MOR, sam4_explain_ckgr_mor),
1327 SAM4_ENTRY(CKGR_MCFR, sam4_explain_ckgr_mcfr),
1328 SAM4_ENTRY(CKGR_PLLAR, sam4_explain_ckgr_plla),
1329 SAM4_ENTRY(CKGR_UCKR, NULL),
1330 SAM4_ENTRY(PMC_FSMR, NULL),
1331 SAM4_ENTRY(PMC_FSPR, NULL),
1332 SAM4_ENTRY(PMC_IMR, NULL),
1333 SAM4_ENTRY(PMC_MCKR, sam4_explain_mckr),
1334 SAM4_ENTRY(PMC_PCK0, NULL),
1335 SAM4_ENTRY(PMC_PCK1, NULL),
1336 SAM4_ENTRY(PMC_PCK2, NULL),
1337 SAM4_ENTRY(PMC_PCSR, NULL),
1338 SAM4_ENTRY(PMC_SCSR, NULL),
1339 SAM4_ENTRY(PMC_SR, NULL),
1340 SAM4_ENTRY(CHIPID_CIDR, sam4_explain_chipid_cidr),
1341 SAM4_ENTRY(CHIPID_EXID, NULL),
1342 /* TERMINATE THE LIST */
1343 { .name = NULL }
1344 };
1345 #undef SAM4_ENTRY
1346
1347 static struct sam4_bank_private *get_sam4_bank_private(struct flash_bank *bank)
1348 {
1349 return (struct sam4_bank_private *)(bank->driver_priv);
1350 }
1351
1352 /**
1353 * Given a pointer to where it goes in the structure,
1354 * determine the register name, address from the all registers table.
1355 */
1356 static const struct sam4_reg_list *sam4_GetReg(struct sam4_chip *pChip, uint32_t *goes_here)
1357 {
1358 const struct sam4_reg_list *pReg;
1359
1360 pReg = &(sam4_all_regs[0]);
1361 while (pReg->name) {
1362 uint32_t *pPossible;
1363
1364 /* calculate where this one go.. */
1365 /* it is "possibly" this register. */
1366
1367 pPossible = ((uint32_t *)(void *)(((char *)(&(pChip->cfg))) + pReg->struct_offset));
1368
1369 /* well? Is it this register */
1370 if (pPossible == goes_here) {
1371 /* Jump for joy! */
1372 return pReg;
1373 }
1374
1375 /* next... */
1376 pReg++;
1377 }
1378 /* This is *TOTAL*PANIC* - we are totally screwed. */
1379 LOG_ERROR("INVALID SAM4 REGISTER");
1380 return NULL;
1381 }
1382
1383 static int sam4_ReadThisReg(struct sam4_chip *pChip, uint32_t *goes_here)
1384 {
1385 const struct sam4_reg_list *pReg;
1386 int r;
1387
1388 pReg = sam4_GetReg(pChip, goes_here);
1389 if (!pReg)
1390 return ERROR_FAIL;
1391
1392 r = target_read_u32(pChip->target, pReg->address, goes_here);
1393 if (r != ERROR_OK) {
1394 LOG_ERROR("Cannot read SAM4 register: %s @ 0x%08x, Err: %d",
1395 pReg->name, (unsigned)(pReg->address), r);
1396 }
1397 return r;
1398 }
1399
1400 static int sam4_ReadAllRegs(struct sam4_chip *pChip)
1401 {
1402 int r;
1403 const struct sam4_reg_list *pReg;
1404
1405 pReg = &(sam4_all_regs[0]);
1406 while (pReg->name) {
1407 r = sam4_ReadThisReg(pChip,
1408 sam4_get_reg_ptr(&(pChip->cfg), pReg));
1409 if (r != ERROR_OK) {
1410 LOG_ERROR("Cannot read SAM4 register: %s @ 0x%08x, Error: %d",
1411 pReg->name, ((unsigned)(pReg->address)), r);
1412 return r;
1413 }
1414 pReg++;
1415 }
1416
1417 return ERROR_OK;
1418 }
1419
1420 static int sam4_GetInfo(struct sam4_chip *pChip)
1421 {
1422 const struct sam4_reg_list *pReg;
1423 uint32_t regval;
1424
1425 pReg = &(sam4_all_regs[0]);
1426 while (pReg->name) {
1427 /* display all regs */
1428 LOG_DEBUG("Start: %s", pReg->name);
1429 regval = *sam4_get_reg_ptr(&(pChip->cfg), pReg);
1430 LOG_USER("%*s: [0x%08x] -> 0x%08x",
1431 REG_NAME_WIDTH,
1432 pReg->name,
1433 pReg->address,
1434 regval);
1435 if (pReg->explain_func)
1436 (*(pReg->explain_func))(pChip);
1437 LOG_DEBUG("End: %s", pReg->name);
1438 pReg++;
1439 }
1440 LOG_USER(" rc-osc: %3.03f MHz", _tomhz(pChip->cfg.rc_freq));
1441 LOG_USER(" mainosc: %3.03f MHz", _tomhz(pChip->cfg.mainosc_freq));
1442 LOG_USER(" plla: %3.03f MHz", _tomhz(pChip->cfg.plla_freq));
1443 LOG_USER(" cpu-freq: %3.03f MHz", _tomhz(pChip->cfg.cpu_freq));
1444 LOG_USER("mclk-freq: %3.03f MHz", _tomhz(pChip->cfg.mclk_freq));
1445
1446 LOG_USER(" UniqueId: 0x%08x 0x%08x 0x%08x 0x%08x",
1447 pChip->cfg.unique_id[0],
1448 pChip->cfg.unique_id[1],
1449 pChip->cfg.unique_id[2],
1450 pChip->cfg.unique_id[3]);
1451
1452 return ERROR_OK;
1453 }
1454
1455 static int sam4_protect_check(struct flash_bank *bank)
1456 {
1457 int r;
1458 uint32_t v[4] = {0};
1459 unsigned x;
1460 struct sam4_bank_private *pPrivate;
1461
1462 LOG_DEBUG("Begin");
1463 if (bank->target->state != TARGET_HALTED) {
1464 LOG_ERROR("Target not halted");
1465 return ERROR_TARGET_NOT_HALTED;
1466 }
1467
1468 pPrivate = get_sam4_bank_private(bank);
1469 if (!pPrivate) {
1470 LOG_ERROR("no private for this bank?");
1471 return ERROR_FAIL;
1472 }
1473 if (!(pPrivate->probed))
1474 return ERROR_FLASH_BANK_NOT_PROBED;
1475
1476 r = FLASHD_GetLockBits(pPrivate, v);
1477 if (r != ERROR_OK) {
1478 LOG_DEBUG("Failed: %d", r);
1479 return r;
1480 }
1481
1482 for (x = 0; x < pPrivate->nsectors; x++)
1483 bank->sectors[x].is_protected = (!!(v[x >> 5] & (1 << (x % 32))));
1484 LOG_DEBUG("Done");
1485 return ERROR_OK;
1486 }
1487
1488 FLASH_BANK_COMMAND_HANDLER(sam4_flash_bank_command)
1489 {
1490 struct sam4_chip *pChip;
1491
1492 pChip = all_sam4_chips;
1493
1494 /* is this an existing chip? */
1495 while (pChip) {
1496 if (pChip->target == bank->target)
1497 break;
1498 pChip = pChip->next;
1499 }
1500
1501 if (!pChip) {
1502 /* this is a *NEW* chip */
1503 pChip = calloc(1, sizeof(struct sam4_chip));
1504 if (!pChip) {
1505 LOG_ERROR("NO RAM!");
1506 return ERROR_FAIL;
1507 }
1508 pChip->target = bank->target;
1509 /* insert at head */
1510 pChip->next = all_sam4_chips;
1511 all_sam4_chips = pChip;
1512 pChip->target = bank->target;
1513 /* assumption is this runs at 32khz */
1514 pChip->cfg.slow_freq = 32768;
1515 pChip->probed = 0;
1516 }
1517
1518 switch (bank->base) {
1519 default:
1520 LOG_ERROR("Address 0x%08x invalid bank address (try 0x%08x"
1521 "[at91sam4s series] )",
1522 ((unsigned int)(bank->base)),
1523 ((unsigned int)(FLASH_BANK_BASE_S)));
1524 return ERROR_FAIL;
1525 break;
1526
1527 /* at91sam4s series only has bank 0*/
1528 case FLASH_BANK_BASE_S:
1529 bank->driver_priv = &(pChip->details.bank[0]);
1530 bank->bank_number = 0;
1531 pChip->details.bank[0].pChip = pChip;
1532 pChip->details.bank[0].pBank = bank;
1533 break;
1534 }
1535
1536 /* we initialize after probing. */
1537 return ERROR_OK;
1538 }
1539
1540 static int sam4_GetDetails(struct sam4_bank_private *pPrivate)
1541 {
1542 const struct sam4_chip_details *pDetails;
1543 struct sam4_chip *pChip;
1544 struct flash_bank *saved_banks[SAM4_MAX_FLASH_BANKS];
1545 unsigned x;
1546
1547 LOG_DEBUG("Begin");
1548 pDetails = all_sam4_details;
1549 while (pDetails->name) {
1550 /* Compare cidr without version bits */
1551 if (pDetails->chipid_cidr == (pPrivate->pChip->cfg.CHIPID_CIDR & 0xFFFFFFE0))
1552 break;
1553 else
1554 pDetails++;
1555 }
1556 if (pDetails->name == NULL) {
1557 LOG_ERROR("SAM4 ChipID 0x%08x not found in table (perhaps you can ID this chip?)",
1558 (unsigned int)(pPrivate->pChip->cfg.CHIPID_CIDR));
1559 /* Help the victim, print details about the chip */
1560 LOG_INFO("SAM4 CHIPID_CIDR: 0x%08x decodes as follows",
1561 pPrivate->pChip->cfg.CHIPID_CIDR);
1562 sam4_explain_chipid_cidr(pPrivate->pChip);
1563 return ERROR_FAIL;
1564 }
1565
1566 /* DANGER: THERE ARE DRAGONS HERE */
1567
1568 /* get our pChip - it is going */
1569 /* to be over-written shortly */
1570 pChip = pPrivate->pChip;
1571
1572 /* Note that, in reality: */
1573 /* */
1574 /* pPrivate = &(pChip->details.bank[0]) */
1575 /* or pPrivate = &(pChip->details.bank[1]) */
1576 /* */
1577
1578 /* save the "bank" pointers */
1579 for (x = 0; x < SAM4_MAX_FLASH_BANKS; x++)
1580 saved_banks[x] = pChip->details.bank[x].pBank;
1581
1582 /* Overwrite the "details" structure. */
1583 memcpy(&(pPrivate->pChip->details),
1584 pDetails,
1585 sizeof(pPrivate->pChip->details));
1586
1587 /* now fix the ghosted pointers */
1588 for (x = 0; x < SAM4_MAX_FLASH_BANKS; x++) {
1589 pChip->details.bank[x].pChip = pChip;
1590 pChip->details.bank[x].pBank = saved_banks[x];
1591 }
1592
1593 /* update the *BANK*SIZE* */
1594
1595 LOG_DEBUG("End");
1596 return ERROR_OK;
1597 }
1598
1599 static int _sam4_probe(struct flash_bank *bank, int noise)
1600 {
1601 unsigned x;
1602 int r;
1603 struct sam4_bank_private *pPrivate;
1604
1605
1606 LOG_DEBUG("Begin: Bank: %d, Noise: %d", bank->bank_number, noise);
1607 if (bank->target->state != TARGET_HALTED) {
1608 LOG_ERROR("Target not halted");
1609 return ERROR_TARGET_NOT_HALTED;
1610 }
1611
1612 pPrivate = get_sam4_bank_private(bank);
1613 if (!pPrivate) {
1614 LOG_ERROR("Invalid/unknown bank number");
1615 return ERROR_FAIL;
1616 }
1617
1618 r = sam4_ReadAllRegs(pPrivate->pChip);
1619 if (r != ERROR_OK)
1620 return r;
1621
1622 LOG_DEBUG("Here");
1623 if (pPrivate->pChip->probed)
1624 r = sam4_GetInfo(pPrivate->pChip);
1625 else
1626 r = sam4_GetDetails(pPrivate);
1627 if (r != ERROR_OK)
1628 return r;
1629
1630 /* update the flash bank size */
1631 for (x = 0; x < SAM4_MAX_FLASH_BANKS; x++) {
1632 if (bank->base == pPrivate->pChip->details.bank[x].base_address) {
1633 bank->size = pPrivate->pChip->details.bank[x].size_bytes;
1634 break;
1635 }
1636 }
1637
1638 if (bank->sectors == NULL) {
1639 bank->sectors = calloc(pPrivate->nsectors, (sizeof((bank->sectors)[0])));
1640 if (bank->sectors == NULL) {
1641 LOG_ERROR("No memory!");
1642 return ERROR_FAIL;
1643 }
1644 bank->num_sectors = pPrivate->nsectors;
1645
1646 for (x = 0; ((int)(x)) < bank->num_sectors; x++) {
1647 bank->sectors[x].size = pPrivate->sector_size;
1648 bank->sectors[x].offset = x * (pPrivate->sector_size);
1649 /* mark as unknown */
1650 bank->sectors[x].is_erased = -1;
1651 bank->sectors[x].is_protected = -1;
1652 }
1653 }
1654
1655 pPrivate->probed = 1;
1656
1657 r = sam4_protect_check(bank);
1658 if (r != ERROR_OK)
1659 return r;
1660
1661 LOG_DEBUG("Bank = %d, nbanks = %d",
1662 pPrivate->bank_number, pPrivate->pChip->details.n_banks);
1663 if ((pPrivate->bank_number + 1) == pPrivate->pChip->details.n_banks) {
1664 /* read unique id, */
1665 /* it appears to be associated with the *last* flash bank. */
1666 FLASHD_ReadUniqueID(pPrivate);
1667 }
1668
1669 return r;
1670 }
1671
1672 static int sam4_probe(struct flash_bank *bank)
1673 {
1674 return _sam4_probe(bank, 1);
1675 }
1676
1677 static int sam4_auto_probe(struct flash_bank *bank)
1678 {
1679 return _sam4_probe(bank, 0);
1680 }
1681
1682 static int sam4_erase(struct flash_bank *bank, int first, int last)
1683 {
1684 struct sam4_bank_private *pPrivate;
1685 int r;
1686 int i;
1687 int pageCount;
1688 /*16 pages equals 8KB - Same size as a lock region*/
1689 pageCount = 16;
1690 uint32_t status;
1691
1692 LOG_DEBUG("Here");
1693 if (bank->target->state != TARGET_HALTED) {
1694 LOG_ERROR("Target not halted");
1695 return ERROR_TARGET_NOT_HALTED;
1696 }
1697
1698 r = sam4_auto_probe(bank);
1699 if (r != ERROR_OK) {
1700 LOG_DEBUG("Here,r=%d", r);
1701 return r;
1702 }
1703
1704 pPrivate = get_sam4_bank_private(bank);
1705 if (!(pPrivate->probed))
1706 return ERROR_FLASH_BANK_NOT_PROBED;
1707
1708 if ((first == 0) && ((last + 1) == ((int)(pPrivate->nsectors)))) {
1709 /* whole chip */
1710 LOG_DEBUG("Here");
1711 return FLASHD_EraseEntireBank(pPrivate);
1712 }
1713 LOG_INFO("sam4 does not auto-erase while programming (Erasing relevant sectors)");
1714 LOG_INFO("sam4 First: 0x%08x Last: 0x%08x", (unsigned int)(first), (unsigned int)(last));
1715 for (i = first; i <= last; i++) {
1716 /*16 pages equals 8KB - Same size as a lock region*/
1717 r = FLASHD_ErasePages(pPrivate, (i * pageCount), pageCount, &status);
1718 LOG_INFO("Erasing sector: 0x%08x", (unsigned int)(i));
1719 if (r != ERROR_OK)
1720 LOG_ERROR("SAM4: Error performing Erase page @ lock region number %d",
1721 (unsigned int)(i));
1722 if (status & (1 << 2)) {
1723 LOG_ERROR("SAM4: Lock Region %d is locked", (unsigned int)(i));
1724 return ERROR_FAIL;
1725 }
1726 if (status & (1 << 1)) {
1727 LOG_ERROR("SAM4: Flash Command error @lock region %d", (unsigned int)(i));
1728 return ERROR_FAIL;
1729 }
1730 }
1731
1732 return ERROR_OK;
1733 }
1734
1735 static int sam4_protect(struct flash_bank *bank, int set, int first, int last)
1736 {
1737 struct sam4_bank_private *pPrivate;
1738 int r;
1739
1740 LOG_DEBUG("Here");
1741 if (bank->target->state != TARGET_HALTED) {
1742 LOG_ERROR("Target not halted");
1743 return ERROR_TARGET_NOT_HALTED;
1744 }
1745
1746 pPrivate = get_sam4_bank_private(bank);
1747 if (!(pPrivate->probed))
1748 return ERROR_FLASH_BANK_NOT_PROBED;
1749
1750 if (set)
1751 r = FLASHD_Lock(pPrivate, (unsigned)(first), (unsigned)(last));
1752 else
1753 r = FLASHD_Unlock(pPrivate, (unsigned)(first), (unsigned)(last));
1754 LOG_DEBUG("End: r=%d", r);
1755
1756 return r;
1757
1758 }
1759
1760 static int sam4_info(struct flash_bank *bank, char *buf, int buf_size)
1761 {
1762 if (bank->target->state != TARGET_HALTED) {
1763 LOG_ERROR("Target not halted");
1764 return ERROR_TARGET_NOT_HALTED;
1765 }
1766 buf[0] = 0;
1767 return ERROR_OK;
1768 }
1769
1770 static int sam4_page_read(struct sam4_bank_private *pPrivate, unsigned pagenum, uint8_t *buf)
1771 {
1772 uint32_t adr;
1773 int r;
1774
1775 adr = pagenum * pPrivate->page_size;
1776 adr = adr + pPrivate->base_address;
1777
1778 r = target_read_memory(pPrivate->pChip->target,
1779 adr,
1780 4, /* THIS*MUST*BE* in 32bit values */
1781 pPrivate->page_size / 4,
1782 buf);
1783 if (r != ERROR_OK)
1784 LOG_ERROR("SAM4: Flash program failed to read page phys address: 0x%08x",
1785 (unsigned int)(adr));
1786 return r;
1787 }
1788
1789 /* The code below is basically this: */
1790 /* compiled with */
1791 /* arm-none-eabi-gcc -mthumb -mcpu = cortex-m3 -O9 -S ./foobar.c -o foobar.s */
1792 /* */
1793 /* Only the *CPU* can write to the flash buffer. */
1794 /* the DAP cannot... so - we download this 28byte thing */
1795 /* Run the algorithm - (below) */
1796 /* to program the device */
1797 /* */
1798 /* ======================================== */
1799 /* #include <stdint.h> */
1800 /* */
1801 /* struct foo { */
1802 /* uint32_t *dst; */
1803 /* const uint32_t *src; */
1804 /* int n; */
1805 /* volatile uint32_t *base; */
1806 /* uint32_t cmd; */
1807 /* }; */
1808 /* */
1809 /* */
1810 /* uint32_t sam4_function(struct foo *p) */
1811 /* { */
1812 /* volatile uint32_t *v; */
1813 /* uint32_t *d; */
1814 /* const uint32_t *s; */
1815 /* int n; */
1816 /* uint32_t r; */
1817 /* */
1818 /* d = p->dst; */
1819 /* s = p->src; */
1820 /* n = p->n; */
1821 /* */
1822 /* do { */
1823 /* *d++ = *s++; */
1824 /* } while (--n) */
1825 /* ; */
1826 /* */
1827 /* v = p->base; */
1828 /* */
1829 /* v[ 1 ] = p->cmd; */
1830 /* do { */
1831 /* r = v[8/4]; */
1832 /* } while (!(r&1)) */
1833 /* ; */
1834 /* return r; */
1835 /* } */
1836 /* ======================================== */
1837
1838 static const uint8_t
1839 sam4_page_write_opcodes[] = {
1840 /* 24 0000 0446 mov r4, r0 */
1841 0x04, 0x46,
1842 /* 25 0002 6168 ldr r1, [r4, #4] */
1843 0x61, 0x68,
1844 /* 26 0004 0068 ldr r0, [r0, #0] */
1845 0x00, 0x68,
1846 /* 27 0006 A268 ldr r2, [r4, #8] */
1847 0xa2, 0x68,
1848 /* 28 @ lr needed for prologue */
1849 /* 29 .L2: */
1850 /* 30 0008 51F8043B ldr r3, [r1], #4 */
1851 0x51, 0xf8, 0x04, 0x3b,
1852 /* 31 000c 12F1FF32 adds r2, r2, #-1 */
1853 0x12, 0xf1, 0xff, 0x32,
1854 /* 32 0010 40F8043B str r3, [r0], #4 */
1855 0x40, 0xf8, 0x04, 0x3b,
1856 /* 33 0014 F8D1 bne .L2 */
1857 0xf8, 0xd1,
1858 /* 34 0016 E268 ldr r2, [r4, #12] */
1859 0xe2, 0x68,
1860 /* 35 0018 2369 ldr r3, [r4, #16] */
1861 0x23, 0x69,
1862 /* 36 001a 5360 str r3, [r2, #4] */
1863 0x53, 0x60,
1864 /* 37 001c 0832 adds r2, r2, #8 */
1865 0x08, 0x32,
1866 /* 38 .L4: */
1867 /* 39 001e 1068 ldr r0, [r2, #0] */
1868 0x10, 0x68,
1869 /* 40 0020 10F0010F tst r0, #1 */
1870 0x10, 0xf0, 0x01, 0x0f,
1871 /* 41 0024 FBD0 beq .L4 */
1872 0xfb, 0xd0,
1873 0x00, 0xBE /* bkpt #0 */
1874 };
1875
1876 static int sam4_page_write(struct sam4_bank_private *pPrivate, unsigned pagenum, uint8_t *buf)
1877 {
1878 uint32_t adr;
1879 uint32_t status;
1880 uint32_t fmr; /* EEFC Flash Mode Register */
1881 int r;
1882
1883 adr = pagenum * pPrivate->page_size;
1884 adr = (adr + pPrivate->base_address);
1885
1886 /* Get flash mode register value */
1887 r = target_read_u32(pPrivate->pChip->target, pPrivate->controller_address, &fmr);
1888 if (r != ERROR_OK)
1889 LOG_DEBUG("Error Read failed: read flash mode register");
1890
1891 /* Clear flash wait state field */
1892 fmr &= 0xfffff0ff;
1893
1894 /* set FWS (flash wait states) field in the FMR (flash mode register) */
1895 fmr |= (pPrivate->flash_wait_states << 8);
1896
1897 LOG_DEBUG("Flash Mode: 0x%08x", ((unsigned int)(fmr)));
1898 r = target_write_u32(pPrivate->pBank->target, pPrivate->controller_address, fmr);
1899 if (r != ERROR_OK)
1900 LOG_DEBUG("Error Write failed: set flash mode register");
1901
1902 /* 1st sector 8kBytes - page 0 - 15*/
1903 /* 2nd sector 8kBytes - page 16 - 30*/
1904 /* 3rd sector 48kBytes - page 31 - 127*/
1905 LOG_DEBUG("Wr Page %u @ phys address: 0x%08x", pagenum, (unsigned int)(adr));
1906 r = target_write_memory(pPrivate->pChip->target,
1907 adr,
1908 4, /* THIS*MUST*BE* in 32bit values */
1909 pPrivate->page_size / 4,
1910 buf);
1911 if (r != ERROR_OK) {
1912 LOG_ERROR("SAM4: Failed to write (buffer) page at phys address 0x%08x",
1913 (unsigned int)(adr));
1914 return r;
1915 }
1916
1917 r = EFC_PerformCommand(pPrivate,
1918 /* send Erase & Write Page */
1919 AT91C_EFC_FCMD_WP, /*AT91C_EFC_FCMD_EWP only works on first two 8kb sectors*/
1920 pagenum,
1921 &status);
1922
1923 if (r != ERROR_OK)
1924 LOG_ERROR("SAM4: Error performing Write page @ phys address 0x%08x",
1925 (unsigned int)(adr));
1926 if (status & (1 << 2)) {
1927 LOG_ERROR("SAM4: Page @ Phys address 0x%08x is locked", (unsigned int)(adr));
1928 return ERROR_FAIL;
1929 }
1930 if (status & (1 << 1)) {
1931 LOG_ERROR("SAM4: Flash Command error @phys address 0x%08x", (unsigned int)(adr));
1932 return ERROR_FAIL;
1933 }
1934 return ERROR_OK;
1935 }
1936
1937 static int sam4_write(struct flash_bank *bank,
1938 uint8_t *buffer,
1939 uint32_t offset,
1940 uint32_t count)
1941 {
1942 int n;
1943 unsigned page_cur;
1944 unsigned page_end;
1945 int r;
1946 unsigned page_offset;
1947 struct sam4_bank_private *pPrivate;
1948 uint8_t *pagebuffer;
1949
1950 /* incase we bail further below, set this to null */
1951 pagebuffer = NULL;
1952
1953 /* ignore dumb requests */
1954 if (count == 0) {
1955 r = ERROR_OK;
1956 goto done;
1957 }
1958
1959 if (bank->target->state != TARGET_HALTED) {
1960 LOG_ERROR("Target not halted");
1961 r = ERROR_TARGET_NOT_HALTED;
1962 goto done;
1963 }
1964
1965 pPrivate = get_sam4_bank_private(bank);
1966 if (!(pPrivate->probed)) {
1967 r = ERROR_FLASH_BANK_NOT_PROBED;
1968 goto done;
1969 }
1970
1971 if ((offset + count) > pPrivate->size_bytes) {
1972 LOG_ERROR("Flash write error - past end of bank");
1973 LOG_ERROR(" offset: 0x%08x, count 0x%08x, BankEnd: 0x%08x",
1974 (unsigned int)(offset),
1975 (unsigned int)(count),
1976 (unsigned int)(pPrivate->size_bytes));
1977 r = ERROR_FAIL;
1978 goto done;
1979 }
1980
1981 pagebuffer = malloc(pPrivate->page_size);
1982 if (!pagebuffer) {
1983 LOG_ERROR("No memory for %d Byte page buffer", (int)(pPrivate->page_size));
1984 r = ERROR_FAIL;
1985 goto done;
1986 }
1987
1988 /* what page do we start & end in? */
1989 page_cur = offset / pPrivate->page_size;
1990 page_end = (offset + count - 1) / pPrivate->page_size;
1991
1992 LOG_DEBUG("Offset: 0x%08x, Count: 0x%08x", (unsigned int)(offset), (unsigned int)(count));
1993 LOG_DEBUG("Page start: %d, Page End: %d", (int)(page_cur), (int)(page_end));
1994
1995 /* Special case: all one page */
1996 /* */
1997 /* Otherwise: */
1998 /* (1) non-aligned start */
1999 /* (2) body pages */
2000 /* (3) non-aligned end. */
2001
2002 /* Handle special case - all one page. */
2003 if (page_cur == page_end) {
2004 LOG_DEBUG("Special case, all in one page");
2005 r = sam4_page_read(pPrivate, page_cur, pagebuffer);
2006 if (r != ERROR_OK)
2007 goto done;
2008
2009 page_offset = (offset & (pPrivate->page_size-1));
2010 memcpy(pagebuffer + page_offset,
2011 buffer,
2012 count);
2013
2014 r = sam4_page_write(pPrivate, page_cur, pagebuffer);
2015 if (r != ERROR_OK)
2016 goto done;
2017 r = ERROR_OK;
2018 goto done;
2019 }
2020
2021 /* non-aligned start */
2022 page_offset = offset & (pPrivate->page_size - 1);
2023 if (page_offset) {
2024 LOG_DEBUG("Not-Aligned start");
2025 /* read the partial */
2026 r = sam4_page_read(pPrivate, page_cur, pagebuffer);
2027 if (r != ERROR_OK)
2028 goto done;
2029
2030 /* over-write with new data */
2031 n = (pPrivate->page_size - page_offset);
2032 memcpy(pagebuffer + page_offset,
2033 buffer,
2034 n);
2035
2036 r = sam4_page_write(pPrivate, page_cur, pagebuffer);
2037 if (r != ERROR_OK)
2038 goto done;
2039
2040 count -= n;
2041 offset += n;
2042 buffer += n;
2043 page_cur++;
2044 }
2045
2046 /* By checking that offset is correct here, we also
2047 fix a clang warning */
2048 assert(offset % pPrivate->page_size == 0);
2049
2050 /* intermediate large pages */
2051 /* also - the final *terminal* */
2052 /* if that terminal page is a full page */
2053 LOG_DEBUG("Full Page Loop: cur=%d, end=%d, count = 0x%08x",
2054 (int)page_cur, (int)page_end, (unsigned int)(count));
2055
2056 while ((page_cur < page_end) &&
2057 (count >= pPrivate->page_size)) {
2058 r = sam4_page_write(pPrivate, page_cur, buffer);
2059 if (r != ERROR_OK)
2060 goto done;
2061 count -= pPrivate->page_size;
2062 buffer += pPrivate->page_size;
2063 page_cur += 1;
2064 }
2065
2066 /* terminal partial page? */
2067 if (count) {
2068 LOG_DEBUG("Terminal partial page, count = 0x%08x", (unsigned int)(count));
2069 /* we have a partial page */
2070 r = sam4_page_read(pPrivate, page_cur, pagebuffer);
2071 if (r != ERROR_OK)
2072 goto done;
2073 /* data goes at start */
2074 memcpy(pagebuffer, buffer, count);
2075 r = sam4_page_write(pPrivate, page_cur, pagebuffer);
2076 if (r != ERROR_OK)
2077 goto done;
2078 }
2079 LOG_DEBUG("Done!");
2080 r = ERROR_OK;
2081 done:
2082 if (pagebuffer)
2083 free(pagebuffer);
2084 return r;
2085 }
2086
2087 COMMAND_HANDLER(sam4_handle_info_command)
2088 {
2089 struct sam4_chip *pChip;
2090 pChip = get_current_sam4(CMD_CTX);
2091 if (!pChip)
2092 return ERROR_OK;
2093
2094 unsigned x;
2095 int r;
2096
2097 /* bank0 must exist before we can do anything */
2098 if (pChip->details.bank[0].pBank == NULL) {
2099 x = 0;
2100 need_define:
2101 command_print(CMD_CTX,
2102 "Please define bank %d via command: flash bank %s ... ",
2103 x,
2104 at91sam4_flash.name);
2105 return ERROR_FAIL;
2106 }
2107
2108 /* if bank 0 is not probed, then probe it */
2109 if (!(pChip->details.bank[0].probed)) {
2110 r = sam4_auto_probe(pChip->details.bank[0].pBank);
2111 if (r != ERROR_OK)
2112 return ERROR_FAIL;
2113 }
2114 /* above guarantees the "chip details" structure is valid */
2115 /* and thus, bank private areas are valid */
2116 /* and we have a SAM4 chip, what a concept! */
2117
2118 /* auto-probe other banks, 0 done above */
2119 for (x = 1; x < SAM4_MAX_FLASH_BANKS; x++) {
2120 /* skip banks not present */
2121 if (!(pChip->details.bank[x].present))
2122 continue;
2123
2124 if (pChip->details.bank[x].pBank == NULL)
2125 goto need_define;
2126
2127 if (pChip->details.bank[x].probed)
2128 continue;
2129
2130 r = sam4_auto_probe(pChip->details.bank[x].pBank);
2131 if (r != ERROR_OK)
2132 return r;
2133 }
2134
2135 r = sam4_GetInfo(pChip);
2136 if (r != ERROR_OK) {
2137 LOG_DEBUG("Sam4Info, Failed %d", r);
2138 return r;
2139 }
2140
2141 return ERROR_OK;
2142 }
2143
2144 COMMAND_HANDLER(sam4_handle_gpnvm_command)
2145 {
2146 unsigned x, v;
2147 int r, who;
2148 struct sam4_chip *pChip;
2149
2150 pChip = get_current_sam4(CMD_CTX);
2151 if (!pChip)
2152 return ERROR_OK;
2153
2154 if (pChip->target->state != TARGET_HALTED) {
2155 LOG_ERROR("sam4 - target not halted");
2156 return ERROR_TARGET_NOT_HALTED;
2157 }
2158
2159 if (pChip->details.bank[0].pBank == NULL) {
2160 command_print(CMD_CTX, "Bank0 must be defined first via: flash bank %s ...",
2161 at91sam4_flash.name);
2162 return ERROR_FAIL;
2163 }
2164 if (!pChip->details.bank[0].probed) {
2165 r = sam4_auto_probe(pChip->details.bank[0].pBank);
2166 if (r != ERROR_OK)
2167 return r;
2168 }
2169
2170 switch (CMD_ARGC) {
2171 default:
2172 return ERROR_COMMAND_SYNTAX_ERROR;
2173 break;
2174 case 0:
2175 goto showall;
2176 break;
2177 case 1:
2178 who = -1;
2179 break;
2180 case 2:
2181 if ((0 == strcmp(CMD_ARGV[0], "show")) && (0 == strcmp(CMD_ARGV[1], "all")))
2182 who = -1;
2183 else {
2184 uint32_t v32;
2185 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], v32);
2186 who = v32;
2187 }
2188 break;
2189 }
2190
2191 if (0 == strcmp("show", CMD_ARGV[0])) {
2192 if (who == -1) {
2193 showall:
2194 r = ERROR_OK;
2195 for (x = 0; x < pChip->details.n_gpnvms; x++) {
2196 r = FLASHD_GetGPNVM(&(pChip->details.bank[0]), x, &v);
2197 if (r != ERROR_OK)
2198 break;
2199 command_print(CMD_CTX, "sam4-gpnvm%u: %u", x, v);
2200 }
2201 return r;
2202 }
2203 if ((who >= 0) && (((unsigned)(who)) < pChip->details.n_gpnvms)) {
2204 r = FLASHD_GetGPNVM(&(pChip->details.bank[0]), who, &v);
2205 command_print(CMD_CTX, "sam4-gpnvm%u: %u", who, v);
2206 return r;
2207 } else {
2208 command_print(CMD_CTX, "sam4-gpnvm invalid GPNVM: %u", who);
2209 return ERROR_COMMAND_SYNTAX_ERROR;
2210 }
2211 }
2212
2213 if (who == -1) {
2214 command_print(CMD_CTX, "Missing GPNVM number");
2215 return ERROR_COMMAND_SYNTAX_ERROR;
2216 }
2217
2218 if (0 == strcmp("set", CMD_ARGV[0]))
2219 r = FLASHD_SetGPNVM(&(pChip->details.bank[0]), who);
2220 else if ((0 == strcmp("clr", CMD_ARGV[0])) ||
2221 (0 == strcmp("clear", CMD_ARGV[0]))) /* quietly accept both */
2222 r = FLASHD_ClrGPNVM(&(pChip->details.bank[0]), who);
2223 else {
2224 command_print(CMD_CTX, "Unknown command: %s", CMD_ARGV[0]);
2225 r = ERROR_COMMAND_SYNTAX_ERROR;
2226 }
2227 return r;
2228 }
2229
2230 COMMAND_HANDLER(sam4_handle_slowclk_command)
2231 {
2232 struct sam4_chip *pChip;
2233
2234 pChip = get_current_sam4(CMD_CTX);
2235 if (!pChip)
2236 return ERROR_OK;
2237
2238 switch (CMD_ARGC) {
2239 case 0:
2240 /* show */
2241 break;
2242 case 1:
2243 {
2244 /* set */
2245 uint32_t v;
2246 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], v);
2247 if (v > 200000) {
2248 /* absurd slow clock of 200Khz? */
2249 command_print(CMD_CTX, "Absurd/illegal slow clock freq: %d\n", (int)(v));
2250 return ERROR_COMMAND_SYNTAX_ERROR;
2251 }
2252 pChip->cfg.slow_freq = v;
2253 break;
2254 }
2255 default:
2256 /* error */
2257 command_print(CMD_CTX, "Too many parameters");
2258 return ERROR_COMMAND_SYNTAX_ERROR;
2259 break;
2260 }
2261 command_print(CMD_CTX, "Slowclk freq: %d.%03dkhz",
2262 (int)(pChip->cfg.slow_freq / 1000),
2263 (int)(pChip->cfg.slow_freq % 1000));
2264 return ERROR_OK;
2265 }
2266
2267 static const struct command_registration at91sam4_exec_command_handlers[] = {
2268 {
2269 .name = "gpnvm",
2270 .handler = sam4_handle_gpnvm_command,
2271 .mode = COMMAND_EXEC,
2272 .usage = "[('clr'|'set'|'show') bitnum]",
2273 .help = "Without arguments, shows all bits in the gpnvm "
2274 "register. Otherwise, clears, sets, or shows one "
2275 "General Purpose Non-Volatile Memory (gpnvm) bit.",
2276 },
2277 {
2278 .name = "info",
2279 .handler = sam4_handle_info_command,
2280 .mode = COMMAND_EXEC,
2281 .help = "Print information about the current at91sam4 chip"
2282 "and its flash configuration.",
2283 },
2284 {
2285 .name = "slowclk",
2286 .handler = sam4_handle_slowclk_command,
2287 .mode = COMMAND_EXEC,
2288 .usage = "[clock_hz]",
2289 .help = "Display or set the slowclock frequency "
2290 "(default 32768 Hz).",
2291 },
2292 COMMAND_REGISTRATION_DONE
2293 };
2294 static const struct command_registration at91sam4_command_handlers[] = {
2295 {
2296 .name = "at91sam4",
2297 .mode = COMMAND_ANY,
2298 .help = "at91sam4 flash command group",
2299 .usage = "",
2300 .chain = at91sam4_exec_command_handlers,
2301 },
2302 COMMAND_REGISTRATION_DONE
2303 };
2304
2305 struct flash_driver at91sam4_flash = {
2306 .name = "at91sam4",
2307 .commands = at91sam4_command_handlers,
2308 .flash_bank_command = sam4_flash_bank_command,
2309 .erase = sam4_erase,
2310 .protect = sam4_protect,
2311 .write = sam4_write,
2312 .read = default_flash_read,
2313 .probe = sam4_probe,
2314 .auto_probe = sam4_auto_probe,
2315 .erase_check = default_flash_blank_check,
2316 .protect_check = sam4_protect_check,
2317 .info = sam4_info,
2318 };
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