2fefb4cd7668586f403ea20b218554fb821961f7
[mw/openocd-lm32.git] / src / flash / flash.c
1 /***************************************************************************
2  *   Copyright (C) 2005 by Dominic Rath                                    *
3  *   Dominic.Rath@gmx.de                                                   *
4  *                                                                         *
5  *   This program is free software; you can redistribute it and/or modify  *
6  *   it under the terms of the GNU General Public License as published by  *
7  *   the Free Software Foundation; either version 2 of the License, or     *
8  *   (at your option) any later version.                                   *
9  *                                                                         *
10  *   This program is distributed in the hope that it will be useful,       *
11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
13  *   GNU General Public License for more details.                          *
14  *                                                                         *
15  *   You should have received a copy of the GNU General Public License     *
16  *   along with this program; if not, write to the                         *
17  *   Free Software Foundation, Inc.,                                       *
18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
19  ***************************************************************************/
20 #ifdef HAVE_CONFIG_H
21 #include "config.h"
22 #endif
23
24 #include "flash.h"
25 #include "command.h"
26 #include "target.h"
27 #include "time_support.h"
28 #include "fileio.h"
29 #include "image.h"
30 #include "log.h"
31
32 #include <string.h>
33 #include <unistd.h>
34 #include <stdlib.h>
35 #include <sys/types.h>
36 #include <sys/stat.h>
37 #include <errno.h>
38 #include <inttypes.h>
39
40 /* command handlers */
41 int handle_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
42 int handle_flash_banks_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
43 int handle_flash_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
44 int handle_flash_probe_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
45 int handle_flash_erase_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
46 int handle_flash_erase_address_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
47 int handle_flash_protect_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
48 int handle_flash_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
49 int handle_flash_write_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
50 int handle_flash_write_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
51 int handle_flash_write_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
52 int handle_flash_protect_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
53 int handle_flash_auto_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
54 flash_bank_t *get_flash_bank_by_addr(target_t *target, u32 addr);
55
56 /* flash drivers
57  */
58 extern flash_driver_t lpc2000_flash;
59 extern flash_driver_t cfi_flash;
60 extern flash_driver_t at91sam7_flash;
61 extern flash_driver_t str7x_flash;
62 extern flash_driver_t str9x_flash;
63 extern flash_driver_t stellaris_flash;
64 extern flash_driver_t str9xpec_flash;
65 extern flash_driver_t stm32x_flash;
66 extern flash_driver_t tms470_flash;
67
68 flash_driver_t *flash_drivers[] =
69 {
70         &lpc2000_flash,
71         &cfi_flash,
72         &at91sam7_flash,
73         &str7x_flash,
74         &str9x_flash,
75         &stellaris_flash,
76         &str9xpec_flash,
77         &stm32x_flash,
78         &tms470_flash,
79         NULL,
80 };
81
82 flash_bank_t *flash_banks;
83 static  command_t *flash_cmd;
84 static int auto_erase = 0;
85
86 /* wafer thin wrapper for invoking the flash driver */
87 static int flash_driver_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
88 {
89         int retval=ERROR_OK;
90         if (bank->target->state != TARGET_HALTED)
91         {
92                 ERROR("target not halted - aborting flash write");
93                 retval=ERROR_TARGET_NOT_HALTED;
94         } else
95         {
96                 retval=bank->driver->write(bank, buffer, offset, count);
97         }
98         if (retval!=ERROR_OK)
99         {
100                 ERROR("Writing to flash bank at address 0x%08x at offset 0x%8.8x", bank->base, offset);
101         }
102         return retval;
103 }
104
105 static int flash_driver_erase(struct flash_bank_s *bank, int first, int last)
106 {
107         int retval=ERROR_OK;
108         if (bank->target->state != TARGET_HALTED)
109         {
110                 ERROR("target not halted - aborting flash erase");
111                 retval=ERROR_TARGET_NOT_HALTED;
112         } else if ((first < 0) || (last < first) || (last >= bank->num_sectors))
113         {
114                 ERROR("invalid flash sector");
115                 retval=ERROR_FLASH_SECTOR_INVALID;
116         } else          
117         {
118                 retval=bank->driver->erase(bank, first, last);
119         }
120         if (retval!=ERROR_OK)
121         {
122                 ERROR("Failed erasing banks %d to %d", first, last);
123         }
124         return retval;
125 }
126
127 int flash_driver_protect(struct flash_bank_s *bank, int set, int first, int last)
128 {
129         int retval;
130         if (bank->target->state != TARGET_HALTED)
131         {
132                 ERROR("target not halted - aborting flash erase");
133                 retval=ERROR_TARGET_NOT_HALTED;
134         } else if ((first < 0) || (last < first) || (last >= bank->num_sectors))
135         {
136                 ERROR("invalid flash sector");
137                 retval=ERROR_FLASH_SECTOR_INVALID;
138         } else          
139         {
140                 retval=bank->driver->protect(bank, set, first, last);
141         }
142         if (retval!=ERROR_OK)
143         {
144                 ERROR("Failed protecting banks %d to %d", first, last);
145         }
146         return retval;
147 }
148
149
150 int flash_register_commands(struct command_context_s *cmd_ctx)
151 {
152         flash_cmd = register_command(cmd_ctx, NULL, "flash", NULL, COMMAND_ANY, NULL);
153         
154         register_command(cmd_ctx, flash_cmd, "bank", handle_flash_bank_command, COMMAND_CONFIG, "flash_bank <driver> <base> <size> <chip_width> <bus_width> <target> [driver_options ...]");
155         register_command(cmd_ctx, flash_cmd, "auto_erase", handle_flash_auto_erase_command, COMMAND_ANY,
156                                                  "auto erase flash sectors <on|off>");
157         return ERROR_OK;
158 }
159
160 int flash_init_drivers(struct command_context_s *cmd_ctx)
161 {
162         if (flash_banks)
163         {
164                 register_command(cmd_ctx, flash_cmd, "banks", handle_flash_banks_command, COMMAND_EXEC,
165                                                  "list configured flash banks ");
166                 register_command(cmd_ctx, flash_cmd, "info", handle_flash_info_command, COMMAND_EXEC,
167                                                  "print info about flash bank <num>");
168                 register_command(cmd_ctx, flash_cmd, "probe", handle_flash_probe_command, COMMAND_EXEC,
169                                                  "identify flash bank <num>");
170                 register_command(cmd_ctx, flash_cmd, "erase_check", handle_flash_erase_check_command, COMMAND_EXEC,
171                                                  "check erase state of sectors in flash bank <num>");
172                 register_command(cmd_ctx, flash_cmd, "protect_check", handle_flash_protect_check_command, COMMAND_EXEC,
173                                                  "check protection state of sectors in flash bank <num>");
174                 register_command(cmd_ctx, flash_cmd, "erase_sector", handle_flash_erase_command, COMMAND_EXEC,
175                                                  "erase sectors at <bank> <first> <last>");
176                 register_command(cmd_ctx, flash_cmd, "erase_address", handle_flash_erase_address_command, COMMAND_EXEC,
177                                                  "erase address range <address> <length>");
178                 register_command(cmd_ctx, flash_cmd, "write_bank", handle_flash_write_bank_command, COMMAND_EXEC,
179                                                  "write binary data to <bank> <file> <offset>");
180                 register_command(cmd_ctx, flash_cmd, "write_image", handle_flash_write_image_command, COMMAND_EXEC,
181                                                  "write_image <file> [offset] [type]");
182                 register_command(cmd_ctx, flash_cmd, "protect", handle_flash_protect_command, COMMAND_EXEC,
183                                                  "set protection of sectors at <bank> <first> <last> <on|off>");
184         }
185         
186         return ERROR_OK;
187 }
188
189 flash_bank_t *get_flash_bank_by_num_noprobe(int num)
190 {
191         flash_bank_t *p;
192         int i = 0;
193
194         for (p = flash_banks; p; p = p->next)
195         {
196                 if (i++ == num)
197                 {
198                         return p;
199                 }
200         }
201         ERROR("Flash bank %d does not exist", num);
202         return NULL;
203 }
204
205 flash_bank_t *get_flash_bank_by_num(int num)
206 {
207         flash_bank_t *p = get_flash_bank_by_num_noprobe(num);
208         int retval;
209         
210         if (p == NULL)
211                 return NULL;
212         
213         retval = p->driver->auto_probe(p);
214         
215         if (retval != ERROR_OK)
216         {
217                 ERROR("auto_probe failed %d\n", retval);
218                 return NULL;
219         }
220         return p;
221 }
222
223 int handle_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
224 {
225         int i;
226         int found = 0;
227         target_t *target;
228                 
229         if (argc < 6)
230         {
231                 return ERROR_COMMAND_SYNTAX_ERROR;
232         }
233         
234         if ((target = get_target_by_num(strtoul(args[5], NULL, 0))) == NULL)
235         {
236                 ERROR("target %lu not defined", strtoul(args[5], NULL, 0));
237                 return ERROR_OK;
238         }
239         
240         for (i = 0; flash_drivers[i]; i++)
241         {
242                 if (strcmp(args[0], flash_drivers[i]->name) == 0)
243                 {
244                         flash_bank_t *p, *c;
245                         
246                         /* register flash specific commands */
247                         if (flash_drivers[i]->register_commands(cmd_ctx) != ERROR_OK)
248                         {
249                                 ERROR("couldn't register '%s' commands", args[0]);
250                                 exit(-1);
251                         }
252                         
253                         c = malloc(sizeof(flash_bank_t));
254                         c->target = target;
255                         c->driver = flash_drivers[i];
256                         c->driver_priv = NULL;
257                         c->base = strtoul(args[1], NULL, 0);
258                         c->size = strtoul(args[2], NULL, 0);
259                         c->chip_width = strtoul(args[3], NULL, 0);
260                         c->bus_width = strtoul(args[4], NULL, 0);
261                         c->num_sectors = 0;
262                         c->sectors = NULL;
263                         c->next = NULL;
264                         
265                         if (flash_drivers[i]->flash_bank_command(cmd_ctx, cmd, args, argc, c) != ERROR_OK)
266                         {
267                                 ERROR("'%s' driver rejected flash bank at 0x%8.8x", args[0], c->base);
268                                 free(c);
269                                 return ERROR_OK;
270                         }
271                         
272                         /* put flash bank in linked list */
273                         if (flash_banks)
274                         {
275                                 /* find last flash bank */
276                                 for (p = flash_banks; p && p->next; p = p->next);
277                                 if (p)
278                                         p->next = c;
279                         }
280                         else
281                         {
282                                 flash_banks = c;
283                         }
284                         
285                         found = 1;
286                 }
287         }
288                 
289         /* no matching flash driver found */
290         if (!found)
291         {
292                 ERROR("flash driver '%s' not found", args[0]);
293                 exit(-1);
294         }
295         
296         return ERROR_OK;
297 }
298
299 int handle_flash_banks_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
300 {
301         flash_bank_t *p;
302         int i = 0;
303         
304         if (!flash_banks)
305         {
306                 command_print(cmd_ctx, "no flash banks configured");
307                 return ERROR_OK;
308         }
309         
310         for (p = flash_banks; p; p = p->next)
311         {
312                 command_print(cmd_ctx, "#%i: %s at 0x%8.8x, size 0x%8.8x, buswidth %i, chipwidth %i",
313                                           i++, p->driver->name, p->base, p->size, p->bus_width, p->chip_width);
314         }
315         
316         return ERROR_OK;
317 }
318
319 int handle_flash_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
320 {
321         flash_bank_t *p;
322         int i = 0;
323         int j = 0;
324                 
325         if (argc != 1)
326         {
327                 return ERROR_COMMAND_SYNTAX_ERROR;
328         }
329         
330         for (p = flash_banks; p; p = p->next, i++)
331         {
332                 if (i == strtoul(args[0], NULL, 0))
333                 {
334                         char buf[1024];
335                         
336                         /* attempt auto probe */
337                         p->driver->auto_probe(p);
338                         
339                         command_print(cmd_ctx, "#%i: %s at 0x%8.8x, size 0x%8.8x, buswidth %i, chipwidth %i",
340                                                 i, p->driver->name, p->base, p->size, p->bus_width, p->chip_width);
341                         for (j = 0; j < p->num_sectors; j++)
342                         {
343                                 char *erase_state, *protect_state;
344                                 
345                                 if (p->sectors[j].is_erased == 0)
346                                         erase_state = "not erased";
347                                 else if (p->sectors[j].is_erased == 1)
348                                         erase_state = "erased";
349                                 else
350                                         erase_state = "erase state unknown";
351                                 
352                                 if (p->sectors[j].is_protected == 0)
353                                         protect_state = "not protected";
354                                 else if (p->sectors[j].is_protected == 1)
355                                         protect_state = "protected";
356                                 else
357                                         protect_state = "protection state unknown";
358
359                                 command_print(cmd_ctx, "\t#%i: 0x%8.8x (0x%x %ikB) %s, %s",
360                                                         j, p->sectors[j].offset, p->sectors[j].size, p->sectors[j].size>>10,
361                                                         erase_state, protect_state);
362                         }
363                         
364                         p->driver->info(p, buf, 1024);
365                         command_print(cmd_ctx, "%s", buf);
366                 }
367         }
368         
369         return ERROR_OK;
370 }
371
372 int handle_flash_probe_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
373 {
374         flash_bank_t *p;
375         int retval;
376                 
377         if (argc != 1)
378         {
379                 return ERROR_COMMAND_SYNTAX_ERROR;
380         }
381         
382         p = get_flash_bank_by_num_noprobe(strtoul(args[0], NULL, 0));
383         if (p)
384         {
385                 if ((retval = p->driver->probe(p)) == ERROR_OK)
386                 {
387                         command_print(cmd_ctx, "flash '%s' found at 0x%8.8x", p->driver->name, p->base);
388                 }
389                 else if (retval == ERROR_FLASH_BANK_INVALID)
390                 {
391                         command_print(cmd_ctx, "probing failed for flash bank '#%s' at 0x%8.8x",
392                                                   args[0], p->base);
393                 }
394                 else
395                 {
396                         command_print(cmd_ctx, "unknown error when probing flash bank '#%s' at 0x%8.8x",
397                                                   args[0], p->base);
398                 }
399         }
400         else
401         {
402                 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
403         }
404         
405         return ERROR_OK;
406 }
407
408 int handle_flash_erase_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
409 {
410         flash_bank_t *p;
411         int retval;
412                 
413         if (argc != 1)
414         {
415                 return ERROR_COMMAND_SYNTAX_ERROR;
416         }
417         
418         p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
419         if (p)
420         {
421                 if ((retval = p->driver->erase_check(p)) == ERROR_OK)
422                 {
423                         command_print(cmd_ctx, "successfully checked erase state", p->driver->name, p->base);
424                 }
425                 else
426                 {
427                         command_print(cmd_ctx, "unknown error when checking erase state of flash bank #%s at 0x%8.8x",
428                                 args[0], p->base);
429                 }
430         }
431         
432         return ERROR_OK;
433 }
434
435 int handle_flash_erase_address_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
436 {
437         flash_bank_t *p;
438         int retval;
439         int address;
440         int length;
441         duration_t duration;
442         char *duration_text;
443         
444         target_t *target = get_current_target(cmd_ctx);
445
446         if (argc != 2)
447         {
448                 return ERROR_COMMAND_SYNTAX_ERROR;
449         }
450         
451         address = strtoul(args[0], NULL, 0);
452         length = strtoul(args[1], NULL, 0);
453         if (length <= 0)
454         {
455                 command_print(cmd_ctx, "Length must be >0");
456                 return ERROR_COMMAND_SYNTAX_ERROR;
457         }
458
459         p = get_flash_bank_by_addr(target, address);
460         if (p == NULL)
461         {
462                 return ERROR_COMMAND_SYNTAX_ERROR;
463         }
464         
465         /* We can't know if we did a resume + halt, in which case we no longer know the erased state */
466         flash_set_dirty();
467         
468         duration_start_measure(&duration);
469         
470         if ((retval = flash_erase_address_range(target, address, length)) == ERROR_OK)
471         {
472                 duration_stop_measure(&duration, &duration_text);       
473                 command_print(cmd_ctx, "erased address 0x%8.8x length %i in %s", address, length, duration_text);
474                 free(duration_text);
475         }
476         
477         return retval;
478 }
479
480 int handle_flash_protect_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
481 {
482         flash_bank_t *p;
483         int retval;
484                 
485         if (argc != 1)
486         {
487                 return ERROR_COMMAND_SYNTAX_ERROR;
488         }
489         
490         p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
491         if (p)
492         {
493                 if ((retval = p->driver->protect_check(p)) == ERROR_OK)
494                 {
495                         command_print(cmd_ctx, "successfully checked protect state");
496                 }
497                 else if (retval == ERROR_FLASH_OPERATION_FAILED)
498                 {
499                         command_print(cmd_ctx, "checking protection state failed (possibly unsupported) by flash #%s at 0x%8.8x", args[0], p->base);
500                 }
501                 else
502                 {
503                         command_print(cmd_ctx, "unknown error when checking protection state of flash bank '#%s' at 0x%8.8x", args[0], p->base);
504                 }
505         }
506         else
507         {
508                 return ERROR_COMMAND_SYNTAX_ERROR;
509         }
510         
511         return ERROR_OK;
512 }
513
514 int handle_flash_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
515 {
516         if (argc > 2)
517         {
518                 int first = strtoul(args[1], NULL, 0);
519                 int last = strtoul(args[2], NULL, 0);
520                 int retval;
521                 flash_bank_t *p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
522                 duration_t duration;
523                 char *duration_text;
524         
525                 duration_start_measure(&duration);
526         
527                 if (!p)
528                 {
529                         return ERROR_COMMAND_SYNTAX_ERROR;
530                 }
531                 
532                 if ((retval = flash_driver_erase(p, first, last)) == ERROR_OK)
533                 {
534                         duration_stop_measure(&duration, &duration_text);       
535                         
536                         command_print(cmd_ctx, "erased sectors %i through %i on flash bank %i in %s", first, last, strtoul(args[0], 0, 0), duration_text);
537                         free(duration_text);
538                 }
539         }
540         else
541         {
542                 return ERROR_COMMAND_SYNTAX_ERROR;
543         }
544
545         return ERROR_OK;
546 }
547
548 int handle_flash_protect_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
549 {
550         if (argc > 3)
551         {
552                 int first = strtoul(args[1], NULL, 0);
553                 int last = strtoul(args[2], NULL, 0);
554                 int set;
555                 int retval;
556                 flash_bank_t *p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
557                 if (!p)
558                 {
559                         command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
560                         return ERROR_OK;
561                 }
562                 
563                 if (strcmp(args[3], "on") == 0)
564                         set = 1;
565                 else if (strcmp(args[3], "off") == 0)
566                         set = 0;
567                 else
568                 {
569                         return ERROR_COMMAND_SYNTAX_ERROR;
570                 }
571                 
572                 retval = flash_driver_protect(p, set, first, last);
573                 if (retval == ERROR_OK)
574                 {
575                         command_print(cmd_ctx, "%s protection for sectors %i through %i on flash bank %i", (set) ? "set" : "cleared", first, last, strtoul(args[0], 0, 0));
576                 }
577         }
578         else
579         {
580                 return ERROR_COMMAND_SYNTAX_ERROR;
581
582         }
583
584         return ERROR_OK;
585 }
586
587 int handle_flash_write_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
588 {
589         target_t *target = get_current_target(cmd_ctx);
590         
591         image_t image;
592         u32 written;
593         
594         duration_t duration;
595         char *duration_text;
596         
597         int retval;
598
599         if (argc < 1)
600         {
601                 return ERROR_COMMAND_SYNTAX_ERROR;
602
603         }
604         
605         if (!target)
606         {
607                 ERROR("no target selected");
608                 return ERROR_OK;
609         }
610         
611         duration_start_measure(&duration);
612         
613         if (argc >= 2)
614         {
615                 image.base_address_set = 1;
616                 image.base_address = strtoul(args[1], NULL, 0);
617         }
618         else
619         {
620                 image.base_address_set = 0;
621                 image.base_address = 0x0;
622         }
623         
624         image.start_address_set = 0;
625
626         retval = image_open(&image, args[0], (argc == 3) ? args[2] : NULL);
627         if (retval != ERROR_OK)
628         {
629                 command_print(cmd_ctx, "image_open error: %s", image.error_str);
630                 return retval;
631         }
632         
633         retval = flash_write(target, &image, &written, auto_erase);
634
635         if (retval != ERROR_OK)
636         {
637                 image_close(&image);
638                 return retval;
639         }
640         
641         duration_stop_measure(&duration, &duration_text);
642         if (retval == ERROR_OK)
643         {
644         command_print(cmd_ctx, "wrote %u byte from file %s in %s (%f kb/s)",
645                 written, args[0], duration_text,
646                 (float)written / 1024.0 / ((float)duration.duration.tv_sec + ((float)duration.duration.tv_usec / 1000000.0)));
647         }
648         free(duration_text);
649
650         image_close(&image);
651         
652         return retval;
653 }
654
655 int handle_flash_write_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
656 {
657         u32 offset;
658         u8 *buffer;
659         u32 buf_cnt;
660
661         fileio_t fileio;
662         
663         duration_t duration;
664         char *duration_text;
665         
666         int retval;
667         flash_bank_t *p;
668
669         if (argc != 3)
670         {
671                 return ERROR_COMMAND_SYNTAX_ERROR;
672         }
673         
674         duration_start_measure(&duration);
675         
676         offset = strtoul(args[2], NULL, 0);
677         p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
678         if (!p)
679         {
680                 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
681                 return ERROR_OK;
682         }
683         
684         if (fileio_open(&fileio, args[1], FILEIO_READ, FILEIO_BINARY) != ERROR_OK)
685         {
686                 command_print(cmd_ctx, "flash write_binary error: %s", fileio.error_str);
687                 return ERROR_OK;
688         }
689         
690         buffer = malloc(fileio.size);
691         if (fileio_read(&fileio, fileio.size, buffer, &buf_cnt) != ERROR_OK)
692         {
693                 command_print(cmd_ctx, "flash write_binary error: %s", fileio.error_str);
694                 return ERROR_OK;
695         }
696         
697         retval = flash_driver_write(p, buffer, offset, buf_cnt);
698                 
699         free(buffer);
700         
701         duration_stop_measure(&duration, &duration_text);
702         if (retval!=ERROR_OK)
703         {
704         command_print(cmd_ctx, "wrote  %"PRIi64" byte from file %s to flash bank %i at offset 0x%8.8x in %s (%f kb/s)",
705                 fileio.size, args[1], strtoul(args[0], NULL, 0), offset, duration_text,
706                 (float)fileio.size / 1024.0 / ((float)duration.duration.tv_sec + ((float)duration.duration.tv_usec / 1000000.0)));
707         }
708         free(duration_text);
709
710         fileio_close(&fileio);
711         
712         return retval;
713 }
714
715 void flash_set_dirty(void)
716 {
717         flash_bank_t *c;
718         int i;
719         
720         /* set all flash to require erasing */
721         for (c = flash_banks; c; c = c->next)
722         {
723                 for (i = 0; i < c->num_sectors; i++)
724                 {
725                         c->sectors[i].is_erased = 0; 
726                 }
727         }
728 }
729
730 /* lookup flash bank by address */
731 flash_bank_t *get_flash_bank_by_addr(target_t *target, u32 addr)
732 {
733         flash_bank_t *c;
734
735         /* cycle through bank list */
736         for (c = flash_banks; c; c = c->next)
737         {
738                 int retval;
739                 retval = c->driver->auto_probe(c);
740                 
741                 if (retval != ERROR_OK)
742                 {
743                         ERROR("auto_probe failed %d\n", retval);
744                         return NULL;
745                 }
746                 /* check whether address belongs to this flash bank */
747                 if ((addr >= c->base) && (addr < c->base + c->size) && target == c->target)
748                         return c;
749         }
750         ERROR("No flash at address 0x%08x\n", addr);
751         return NULL;
752 }
753
754 /* erase given flash region, selects proper bank according to target and address */
755 int flash_erase_address_range(target_t *target, u32 addr, u32 length)
756 {
757         flash_bank_t *c;
758         int first = -1;
759         int last = -1;
760         int i;
761         
762         if ((c = get_flash_bank_by_addr(target, addr)) == NULL)
763                 return ERROR_FLASH_DST_OUT_OF_BANK; /* no corresponding bank found */
764
765         if (c->size == 0 || c->num_sectors == 0)
766                 return ERROR_FLASH_BANK_INVALID;
767         
768         if (length == 0)
769         {
770                 /* special case, erase whole bank when length is zero */
771                 if (addr != c->base)
772                         return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
773                 
774                 return flash_driver_erase(c, 0, c->num_sectors - 1);
775         }
776
777         /* check whether it fits */
778         if (addr + length > c->base + c->size)
779                 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
780         
781         addr -= c->base;
782         
783         for (i = 0; i < c->num_sectors; i++)
784         {               
785                 /* check whether sector overlaps with the given range and is not yet erased */
786                 if (addr < c->sectors[i].offset + c->sectors[i].size && addr + length > c->sectors[i].offset && c->sectors[i].is_erased != 1) {
787                         /* if first is not set yet then this is the first sector */
788                         if (first == -1)
789                                 first = i;
790                         last = i; /* and it is the last one so far in any case */
791                 }
792         }
793         
794         if( first == -1 || last == -1 )
795                 return ERROR_OK;
796         
797         return flash_driver_erase(c, first, last);
798 }
799
800 /* write (optional verify) an image to flash memory of the given target */
801 int flash_write(target_t *target, image_t *image, u32 *written, int erase)
802 {
803         int retval;
804
805         int section;
806         u32 section_offset;
807         flash_bank_t *c;
808         
809         section = 0;
810         section_offset = 0;
811
812         if (written)
813                 *written = 0;
814         
815         if (erase)
816         {
817                 /* assume all sectors need erasing - stops any problems
818                  * when flash_write is called multiple times */
819                 
820                 flash_set_dirty();
821         }
822         
823         /* loop until we reach end of the image */
824         while (section < image->num_sections)
825         {
826                 u32 buffer_size;
827                 u8 *buffer;
828                 int section_first;
829                 int section_last;
830                 u32 run_address = image->sections[section].base_address + section_offset;
831                 u32 run_size = image->sections[section].size - section_offset;
832
833                 if (image->sections[section].size ==  0)
834                 {
835                         WARNING("empty section %d", section);
836                         section++;
837                         section_offset = 0;
838                         continue;
839                 }
840
841                 /* find the corresponding flash bank */
842                 if ((c = get_flash_bank_by_addr(target, run_address)) == NULL)
843                 {
844                         section++; /* and skip it */
845                         section_offset = 0;
846                         continue;
847                 }
848
849                 /* collect consecutive sections which fall into the same bank */
850                 section_first = section;
851                 section_last = section;
852                 while ((run_address + run_size < c->base + c->size)
853                                 && (section_last + 1 < image->num_sections))
854                 {
855                         if (image->sections[section_last + 1].base_address < (run_address + run_size))
856                         {
857                                 DEBUG("section %d out of order(very slightly surprising, but supported)", section_last + 1);
858                                 break;
859                         }
860                         if (image->sections[section_last + 1].base_address != (run_address + run_size))
861                                 break;
862                         run_size += image->sections[++section_last].size;
863                 }
864
865                 /* fit the run into bank constraints */
866                 if (run_address + run_size > c->base + c->size)
867                         run_size = c->base + c->size - run_address;
868
869                 /* allocate buffer */
870                 buffer = malloc(run_size);
871                 buffer_size = 0;
872
873                 /* read sections to the buffer */
874                 while (buffer_size < run_size)
875                 {
876                         u32 size_read;
877                         
878                         if (buffer_size - run_size <= image->sections[section].size - section_offset)
879                                 size_read = buffer_size - run_size;
880                         else
881                                 size_read = image->sections[section].size - section_offset;
882                         
883                         if ((retval = image_read_section(image, section, section_offset,
884                                         size_read, buffer + buffer_size, &size_read)) != ERROR_OK || size_read == 0)
885                         {
886                                 free(buffer);
887                                 
888                                 return retval;
889                         }
890
891                         buffer_size += size_read;
892                         section_offset += size_read;
893
894                         if (section_offset >= image->sections[section].size)
895                         {
896                                 section++;
897                                 section_offset = 0;
898                         }
899                 }
900
901                 retval = ERROR_OK;
902                 
903                 if (erase)
904                 {
905                         /* calculate and erase sectors */
906                         retval = flash_erase_address_range( target, run_address, run_size );
907                 }
908                 
909                 if (retval == ERROR_OK)
910                 {
911                         /* write flash sectors */
912                         retval = flash_driver_write(c, buffer, run_address - c->base, run_size);
913                 }
914                 
915                 free(buffer);
916
917                 if (retval != ERROR_OK)
918                 {
919                                 return retval; /* abort operation */
920                         }
921
922                 if (written != NULL)
923                         *written += run_size; /* add run size to total written counter */
924         }
925
926         return ERROR_OK;
927 }
928
929 int handle_flash_auto_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
930 {
931         if (argc != 1)
932         {
933                 return ERROR_COMMAND_SYNTAX_ERROR;
934
935         }
936         
937         if (strcmp(args[0], "on") == 0)
938                 auto_erase = 1;
939         else if (strcmp(args[0], "off") == 0)
940                 auto_erase = 0;
941         else 
942                 return ERROR_COMMAND_SYNTAX_ERROR;
943         
944         return ERROR_OK;
945 }