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- remove target specific variant and use target->variant member
[openocd.git] / src / target / image.c
blobfb4d8915acdde57d35ab3b0004585b65d021170b
1 /***************************************************************************
2 * Copyright (C) 2007 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
4 * *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
7 * *
8 * Copyright (C) 2008 by Spencer Oliver *
9 * spen@spen-soft.co.uk *
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 #ifdef HAVE_CONFIG_H
27 #include "config.h"
28 #endif
29
30 #include <stdlib.h>
31 #include <string.h>
32 #ifdef HAVE_ELF_H
33 #include <elf.h>
34 #endif
35
36 #include "image.h"
37
38 #include "types.h"
39 #include "replacements.h"
40 #include "log.h"
41
42 #include "fileio.h"
43 #include "target.h"
44
45 /* convert ELF header field to host endianness */
46 #define field16(elf,field)\
47 ((elf->endianness==ELFDATA2LSB)? \
48 le_to_h_u16((u8*)&field):be_to_h_u16((u8*)&field))
49
50 #define field32(elf,field)\
51 ((elf->endianness==ELFDATA2LSB)? \
52 le_to_h_u32((u8*)&field):be_to_h_u32((u8*)&field))
53
54 static int autodetect_image_type(image_t *image, char *url)
55 {
56 int retval;
57 fileio_t fileio;
58 u32 read_bytes;
59 u8 buffer[9];
60
61 /* read the first 4 bytes of image */
62 if ((retval = fileio_open(&fileio, url, FILEIO_READ, FILEIO_BINARY)) != ERROR_OK)
63 {
64 return retval;
65 }
66 retval = fileio_read(&fileio, 9, buffer, &read_bytes);
67
68 if (retval==ERROR_OK)
69 {
70 if (read_bytes != 9)
71 {
72 retval=ERROR_FILEIO_OPERATION_FAILED;
73 }
74 }
75 fileio_close(&fileio);
76
77 if (retval!=ERROR_OK)
78 return retval;
79
80 /* check header against known signatures */
81 if (strncmp((char*)buffer,ELFMAG,SELFMAG)==0)
82 {
83 LOG_DEBUG("ELF image detected.");
84 image->type = IMAGE_ELF;
85 }
86 else if ((buffer[0]==':') /* record start byte */
87 &&(isxdigit(buffer[1]))
88 &&(isxdigit(buffer[2]))
89 &&(isxdigit(buffer[3]))
90 &&(isxdigit(buffer[4]))
91 &&(isxdigit(buffer[5]))
92 &&(isxdigit(buffer[6]))
93 &&(buffer[7]=='0') /* record type : 00 -> 05 */
94 &&(buffer[8]>='0')&&(buffer[8]<'6'))
95 {
96 LOG_DEBUG("IHEX image detected.");
97 image->type = IMAGE_IHEX;
98 }
99 else if ((buffer[0] == 'S') /* record start byte */
100 &&(isxdigit(buffer[1]))
101 &&(isxdigit(buffer[2]))
102 &&(isxdigit(buffer[3]))
103 &&(buffer[1] >= '0') && (buffer[1] < '9'))
104 {
105 LOG_DEBUG("S19 image detected.");
106 image->type = IMAGE_SRECORD;
107 }
108 else
109 {
110 image->type = IMAGE_BINARY;
111 }
112
113 return ERROR_OK;
114 }
115
116 int identify_image_type(image_t *image, char *type_string, char *url)
117 {
118 if (type_string)
119 {
120 if (!strcmp(type_string, "bin"))
121 {
122 image->type = IMAGE_BINARY;
123 }
124 else if (!strcmp(type_string, "ihex"))
125 {
126 image->type = IMAGE_IHEX;
127 }
128 else if (!strcmp(type_string, "elf"))
129 {
130 image->type = IMAGE_ELF;
131 }
132 else if (!strcmp(type_string, "mem"))
133 {
134 image->type = IMAGE_MEMORY;
135 }
136 else if (!strcmp(type_string, "s19"))
137 {
138 image->type = IMAGE_SRECORD;
139 }
140 else if (!strcmp(type_string, "build"))
141 {
142 image->type = IMAGE_BUILDER;
143 }
144 else
145 {
146 return ERROR_IMAGE_TYPE_UNKNOWN;
147 }
148 }
149 else
150 {
151 return autodetect_image_type(image, url);
152 }
153
154 return ERROR_OK;
155 }
156
157 int image_ihex_buffer_complete(image_t *image)
158 {
159 image_ihex_t *ihex = image->type_private;
160 fileio_t *fileio = &ihex->fileio;
161 u32 full_address = 0x0;
162 u32 cooked_bytes;
163 int i;
164 char lpszLine[1023];
165
166 /* we can't determine the number of sections that we'll have to create ahead of time,
167 * so we locally hold them until parsing is finished */
168 image_section_t section[IMAGE_MAX_SECTIONS];
169
170 ihex->buffer = malloc(fileio->size >> 1);
171 cooked_bytes = 0x0;
172 image->num_sections = 0;
173 section[image->num_sections].private = &ihex->buffer[cooked_bytes];
174 section[image->num_sections].base_address = 0x0;
175 section[image->num_sections].size = 0x0;
176 section[image->num_sections].flags = 0;
177
178 while (fileio_fgets(fileio, 1023, lpszLine) == ERROR_OK)
179 {
180 u32 count;
181 u32 address;
182 u32 record_type;
183 u32 checksum;
184 u8 cal_checksum = 0;
185 u32 bytes_read = 0;
186
187 if (sscanf(&lpszLine[bytes_read], ":%2x%4x%2x", &count, &address, &record_type) != 3)
188 {
189 return ERROR_IMAGE_FORMAT_ERROR;
190 }
191 bytes_read += 9;
192
193 cal_checksum += (u8)count;
194 cal_checksum += (u8)(address >> 8);
195 cal_checksum += (u8)address;
196 cal_checksum += (u8)record_type;
197
198 if (record_type == 0) /* Data Record */
199 {
200 if ((full_address & 0xffff) != address)
201 {
202 /* we encountered a nonconsecutive location, create a new section,
203 * unless the current section has zero size, in which case this specifies
204 * the current section's base address
205 */
206 if (section[image->num_sections].size != 0)
207 {
208 image->num_sections++;
209 section[image->num_sections].size = 0x0;
210 section[image->num_sections].flags = 0;
211 section[image->num_sections].private = &ihex->buffer[cooked_bytes];
212 }
213 section[image->num_sections].base_address =
214 (full_address & 0xffff0000) | address;
215 full_address = (full_address & 0xffff0000) | address;
216 }
217
218 while (count-- > 0)
219 {
220 sscanf(&lpszLine[bytes_read], "%2x", (u32*)&ihex->buffer[cooked_bytes]);
221 cal_checksum += (u8)ihex->buffer[cooked_bytes];
222 bytes_read += 2;
223 cooked_bytes += 1;
224 section[image->num_sections].size += 1;
225 full_address++;
226 }
227 }
228 else if (record_type == 1) /* End of File Record */
229 {
230 /* finish the current section */
231 image->num_sections++;
232
233 /* copy section information */
234 image->sections = malloc(sizeof(image_section_t) * image->num_sections);
235 for (i = 0; i < image->num_sections; i++)
236 {
237 image->sections[i].private = section[i].private;
238 image->sections[i].base_address = section[i].base_address;
239 image->sections[i].size = section[i].size;
240 image->sections[i].flags = section[i].flags;
241 }
242
243 return ERROR_OK;
244 }
245 else if (record_type == 2) /* Linear Address Record */
246 {
247 u16 upper_address;
248
249 sscanf(&lpszLine[bytes_read], "%4hx", &upper_address);
250 cal_checksum += (u8)(upper_address >> 8);
251 cal_checksum += (u8)upper_address;
252 bytes_read += 4;
253
254 if ((full_address >> 4) != upper_address)
255 {
256 /* we encountered a nonconsecutive location, create a new section,
257 * unless the current section has zero size, in which case this specifies
258 * the current section's base address
259 */
260 if (section[image->num_sections].size != 0)
261 {
262 image->num_sections++;
263 section[image->num_sections].size = 0x0;
264 section[image->num_sections].flags = 0;
265 section[image->num_sections].private = &ihex->buffer[cooked_bytes];
266 }
267 section[image->num_sections].base_address =
268 (full_address & 0xffff) | (upper_address << 4);
269 full_address = (full_address & 0xffff) | (upper_address << 4);
270 }
271 }
272 else if (record_type == 3) /* Start Segment Address Record */
273 {
274 u32 dummy;
275
276 /* "Start Segment Address Record" will not be supported */
277 /* but we must consume it, and do not create an error. */
278 while (count-- > 0)
279 {
280 sscanf(&lpszLine[bytes_read], "%2x", &dummy);
281 cal_checksum += (u8)dummy;
282 bytes_read += 2;
283 }
284 }
285 else if (record_type == 4) /* Extended Linear Address Record */
286 {
287 u16 upper_address;
288
289 sscanf(&lpszLine[bytes_read], "%4hx", &upper_address);
290 cal_checksum += (u8)(upper_address >> 8);
291 cal_checksum += (u8)upper_address;
292 bytes_read += 4;
293
294 if ((full_address >> 16) != upper_address)
295 {
296 /* we encountered a nonconsecutive location, create a new section,
297 * unless the current section has zero size, in which case this specifies
298 * the current section's base address
299 */
300 if (section[image->num_sections].size != 0)
301 {
302 image->num_sections++;
303 section[image->num_sections].size = 0x0;
304 section[image->num_sections].flags = 0;
305 section[image->num_sections].private = &ihex->buffer[cooked_bytes];
306 }
307 section[image->num_sections].base_address =
308 (full_address & 0xffff) | (upper_address << 16);
309 full_address = (full_address & 0xffff) | (upper_address << 16);
310 }
311 }
312 else if (record_type == 5) /* Start Linear Address Record */
313 {
314 u32 start_address;
315
316 sscanf(&lpszLine[bytes_read], "%8x", &start_address);
317 cal_checksum += (u8)(start_address >> 24);
318 cal_checksum += (u8)(start_address >> 16);
319 cal_checksum += (u8)(start_address >> 8);
320 cal_checksum += (u8)start_address;
321 bytes_read += 8;
322
323 image->start_address_set = 1;
324 image->start_address = be_to_h_u32((u8*)&start_address);
325 }
326 else
327 {
328 LOG_ERROR("unhandled IHEX record type: %i", record_type);
329 return ERROR_IMAGE_FORMAT_ERROR;
330 }
331
332 sscanf(&lpszLine[bytes_read], "%2x", &checksum);
333 bytes_read += 2;
334
335 if ((u8)checksum != (u8)(~cal_checksum + 1))
336 {
337 /* checksum failed */
338 LOG_ERROR("incorrect record checksum found in IHEX file");
339 return ERROR_IMAGE_CHECKSUM;
340 }
341 }
342
343 LOG_ERROR("premature end of IHEX file, no end-of-file record found");
344 return ERROR_IMAGE_FORMAT_ERROR;
345 }
346
347 int image_elf_read_headers(image_t *image)
348 {
349 image_elf_t *elf = image->type_private;
350 u32 read_bytes;
351 u32 i,j;
352 int retval;
353
354 elf->header = malloc(sizeof(Elf32_Ehdr));
355
356 if(elf->header == NULL)
357 {
358 LOG_ERROR("insufficient memory to perform operation ");
359 return ERROR_FILEIO_OPERATION_FAILED;
360 }
361
362 if ((retval = fileio_read(&elf->fileio, sizeof(Elf32_Ehdr), (u8*)elf->header, &read_bytes)) != ERROR_OK)
363 {
364 LOG_ERROR("cannot read ELF file header, read failed");
365 return ERROR_FILEIO_OPERATION_FAILED;
366 }
367 if (read_bytes != sizeof(Elf32_Ehdr))
368 {
369 LOG_ERROR("cannot read ELF file header, only partially read");
370 return ERROR_FILEIO_OPERATION_FAILED;
371 }
372
373 if (strncmp((char*)elf->header->e_ident,ELFMAG,SELFMAG)!=0)
374 {
375 LOG_ERROR("invalid ELF file, bad magic number");
376 return ERROR_IMAGE_FORMAT_ERROR;
377 }
378 if (elf->header->e_ident[EI_CLASS]!=ELFCLASS32)
379 {
380 LOG_ERROR("invalid ELF file, only 32bits files are supported");
381 return ERROR_IMAGE_FORMAT_ERROR;
382 }
383
384 elf->endianness = elf->header->e_ident[EI_DATA];
385 if ((elf->endianness!=ELFDATA2LSB)
386 &&(elf->endianness!=ELFDATA2MSB))
387 {
388 LOG_ERROR("invalid ELF file, unknown endianess setting");
389 return ERROR_IMAGE_FORMAT_ERROR;
390 }
391
392 elf->segment_count = field16(elf,elf->header->e_phnum);
393 if (elf->segment_count==0)
394 {
395 LOG_ERROR("invalid ELF file, no program headers");
396 return ERROR_IMAGE_FORMAT_ERROR;
397 }
398
399 if ((retval = fileio_seek(&elf->fileio, field32(elf,elf->header->e_phoff))) != ERROR_OK)
400 {
401 LOG_ERROR("cannot seek to ELF program header table, read failed");
402 return retval;
403 }
404
405 elf->segments = malloc(elf->segment_count*sizeof(Elf32_Phdr));
406 if(elf->segments == NULL)
407 {
408 LOG_ERROR("insufficient memory to perform operation ");
409 return ERROR_FILEIO_OPERATION_FAILED;
410 }
411
412 if ((retval = fileio_read(&elf->fileio, elf->segment_count*sizeof(Elf32_Phdr), (u8*)elf->segments, &read_bytes)) != ERROR_OK)
413 {
414 LOG_ERROR("cannot read ELF segment headers, read failed");
415 return retval;
416 }
417 if (read_bytes != elf->segment_count*sizeof(Elf32_Phdr))
418 {
419 LOG_ERROR("cannot read ELF segment headers, only partially read");
420 return ERROR_FILEIO_OPERATION_FAILED;
421 }
422
423 /* count useful segments (loadable), ignore BSS section */
424 image->num_sections = 0;
425 for (i=0;i<elf->segment_count;i++)
426 if ((field32(elf, elf->segments[i].p_type) == PT_LOAD) && (field32(elf, elf->segments[i].p_filesz) != 0))
427 image->num_sections++;
428 /* alloc and fill sections array with loadable segments */
429 image->sections = malloc(image->num_sections * sizeof(image_section_t));
430 for (i=0,j=0;i<elf->segment_count;i++)
431 {
432 if ((field32(elf, elf->segments[i].p_type) == PT_LOAD) && (field32(elf, elf->segments[i].p_filesz) != 0))
433 {
434 image->sections[j].size = field32(elf,elf->segments[i].p_filesz);
435 image->sections[j].base_address = field32(elf,elf->segments[i].p_paddr);
436 image->sections[j].private = &elf->segments[i];
437 image->sections[j].flags = field32(elf,elf->segments[i].p_flags);
438 j++;
439 }
440 }
441
442 image->start_address_set = 1;
443 image->start_address = field32(elf,elf->header->e_entry);
444
445 return ERROR_OK;
446 }
447
448 int image_elf_read_section(image_t *image, int section, u32 offset, u32 size, u8 *buffer, u32 *size_read)
449 {
450 image_elf_t *elf = image->type_private;
451 Elf32_Phdr *segment = (Elf32_Phdr *)image->sections[section].private;
452 u32 read_size,really_read;
453 int retval;
454
455 *size_read = 0;
456
457 LOG_DEBUG("load segment %d at 0x%x (sz=0x%x)",section,offset,size);
458
459 /* read initialized data in current segment if any */
460 if (offset<field32(elf,segment->p_filesz))
461 {
462 /* maximal size present in file for the current segment */
463 read_size = MIN(size, field32(elf,segment->p_filesz)-offset);
464 LOG_DEBUG("read elf: size = 0x%x at 0x%x",read_size,
465 field32(elf,segment->p_offset)+offset);
466 /* read initialized area of the segment */
467 if ((retval = fileio_seek(&elf->fileio, field32(elf,segment->p_offset)+offset)) != ERROR_OK)
468 {
469 LOG_ERROR("cannot find ELF segment content, seek failed");
470 return retval;
471 }
472 if ((retval = fileio_read(&elf->fileio, read_size, buffer, &really_read)) != ERROR_OK)
473 {
474 LOG_ERROR("cannot read ELF segment content, read failed");
475 return retval;
476 }
477 buffer += read_size;
478 size -= read_size;
479 offset += read_size;
480 *size_read += read_size;
481 /* need more data ? */
482 if (!size)
483 return ERROR_OK;
484 }
485
486 return ERROR_OK;
487 }
488
489 int image_mot_buffer_complete(image_t *image)
490 {
491 image_mot_t *mot = image->type_private;
492 fileio_t *fileio = &mot->fileio;
493 u32 full_address = 0x0;
494 u32 cooked_bytes;
495 int i;
496 char lpszLine[1023];
497
498 /* we can't determine the number of sections that we'll have to create ahead of time,
499 * so we locally hold them until parsing is finished */
500 image_section_t section[IMAGE_MAX_SECTIONS];
501
502 mot->buffer = malloc(fileio->size >> 1);
503 cooked_bytes = 0x0;
504 image->num_sections = 0;
505 section[image->num_sections].private = &mot->buffer[cooked_bytes];
506 section[image->num_sections].base_address = 0x0;
507 section[image->num_sections].size = 0x0;
508 section[image->num_sections].flags = 0;
509
510 while (fileio_fgets(fileio, 1023, lpszLine) == ERROR_OK)
511 {
512 u32 count;
513 u32 address;
514 u32 record_type;
515 u32 checksum;
516 u8 cal_checksum = 0;
517 u32 bytes_read = 0;
518
519 /* get record type and record length */
520 if (sscanf(&lpszLine[bytes_read], "S%1x%2x", &record_type, &count) != 2)
521 {
522 return ERROR_IMAGE_FORMAT_ERROR;
523 }
524
525 bytes_read += 4;
526 cal_checksum += (u8)count;
527
528 /* skip checksum byte */
529 count -=1;
530
531 if (record_type == 0)
532 {
533 /* S0 - starting record (optional) */
534 int iValue;
535
536 while (count-- > 0) {
537 sscanf(&lpszLine[bytes_read], "%2x", &iValue);
538 cal_checksum += (u8)iValue;
539 bytes_read += 2;
540 }
541 }
542 else if (record_type >= 1 && record_type <= 3)
543 {
544 switch( record_type )
545 {
546 case 1:
547 /* S1 - 16 bit address data record */
548 sscanf(&lpszLine[bytes_read], "%4x", &address);
549 cal_checksum += (u8)(address >> 8);
550 cal_checksum += (u8)address;
551 bytes_read += 4;
552 count -=2;
553 break;
554
555 case 2:
556 /* S2 - 24 bit address data record */
557 sscanf(&lpszLine[bytes_read], "%6x", &address);
558 cal_checksum += (u8)(address >> 16);
559 cal_checksum += (u8)(address >> 8);
560 cal_checksum += (u8)address;
561 bytes_read += 6;
562 count -=3;
563 break;
564
565 case 3:
566 /* S3 - 32 bit address data record */
567 sscanf(&lpszLine[bytes_read], "%8x", &address);
568 cal_checksum += (u8)(address >> 24);
569 cal_checksum += (u8)(address >> 16);
570 cal_checksum += (u8)(address >> 8);
571 cal_checksum += (u8)address;
572 bytes_read += 8;
573 count -=4;
574 break;
575
576 }
577
578 if (full_address != address)
579 {
580 /* we encountered a nonconsecutive location, create a new section,
581 * unless the current section has zero size, in which case this specifies
582 * the current section's base address
583 */
584 if (section[image->num_sections].size != 0)
585 {
586 image->num_sections++;
587 section[image->num_sections].size = 0x0;
588 section[image->num_sections].flags = 0;
589 section[image->num_sections].private = &mot->buffer[cooked_bytes];
590 }
591 section[image->num_sections].base_address = address;
592 full_address = address;
593 }
594
595 while (count-- > 0)
596 {
597 sscanf(&lpszLine[bytes_read], "%2x", (u32*)&mot->buffer[cooked_bytes]);
598 cal_checksum += (u8)mot->buffer[cooked_bytes];
599 bytes_read += 2;
600 cooked_bytes += 1;
601 section[image->num_sections].size += 1;
602 full_address++;
603 }
604 }
605 else if (record_type == 5)
606 {
607 /* S5 is the data count record, we ignore it */
608 u32 dummy;
609
610 while (count-- > 0)
611 {
612 sscanf(&lpszLine[bytes_read], "%2x", &dummy);
613 cal_checksum += (u8)dummy;
614 bytes_read += 2;
615 }
616 }
617 else if (record_type >= 7 && record_type <= 9)
618 {
619 /* S7, S8, S9 - ending records for 32, 24 and 16bit */
620 image->num_sections++;
621
622 /* copy section information */
623 image->sections = malloc(sizeof(image_section_t) * image->num_sections);
624 for (i = 0; i < image->num_sections; i++)
625 {
626 image->sections[i].private = section[i].private;
627 image->sections[i].base_address = section[i].base_address;
628 image->sections[i].size = section[i].size;
629 image->sections[i].flags = section[i].flags;
630 }
631
632 return ERROR_OK;
633 }
634 else
635 {
636 LOG_ERROR("unhandled S19 record type: %i", record_type);
637 return ERROR_IMAGE_FORMAT_ERROR;
638 }
639
640 /* account for checksum, will always be 0xFF */
641 sscanf(&lpszLine[bytes_read], "%2x", &checksum);
642 cal_checksum += (u8)checksum;
643 bytes_read += 2;
644
645 if( cal_checksum != 0xFF )
646 {
647 /* checksum failed */
648 LOG_ERROR("incorrect record checksum found in S19 file");
649 return ERROR_IMAGE_CHECKSUM;
650 }
651 }
652
653 LOG_ERROR("premature end of S19 file, no end-of-file record found");
654 return ERROR_IMAGE_FORMAT_ERROR;
655 }
656
657 int image_open(image_t *image, char *url, char *type_string)
658 {
659 int retval = ERROR_OK;
660
661 if ((retval = identify_image_type(image, type_string, url)) != ERROR_OK)
662 {
663 return retval;
664 }
665
666 if (image->type == IMAGE_BINARY)
667 {
668 image_binary_t *image_binary;
669
670 image_binary = image->type_private = malloc(sizeof(image_binary_t));
671
672 if ((retval = fileio_open(&image_binary->fileio, url, FILEIO_READ, FILEIO_BINARY)) != ERROR_OK)
673 {
674 return retval;
675 }
676
677 image->num_sections = 1;
678 image->sections = malloc(sizeof(image_section_t));
679 image->sections[0].base_address = 0x0;
680 image->sections[0].size = image_binary->fileio.size;
681 image->sections[0].flags = 0;
682 }
683 else if (image->type == IMAGE_IHEX)
684 {
685 image_ihex_t *image_ihex;
686
687 image_ihex = image->type_private = malloc(sizeof(image_ihex_t));
688
689 if ((retval = fileio_open(&image_ihex->fileio, url, FILEIO_READ, FILEIO_TEXT)) != ERROR_OK)
690 {
691 return retval;
692 }
693
694 if ((retval = image_ihex_buffer_complete(image)) != ERROR_OK)
695 {
696 LOG_ERROR("failed buffering IHEX image, check daemon output for additional information");
697 fileio_close(&image_ihex->fileio);
698 return retval;
699 }
700 }
701 else if (image->type == IMAGE_ELF)
702 {
703 image_elf_t *image_elf;
704
705 image_elf = image->type_private = malloc(sizeof(image_elf_t));
706
707 if ((retval = fileio_open(&image_elf->fileio, url, FILEIO_READ, FILEIO_BINARY)) != ERROR_OK)
708 {
709 return retval;
710 }
711
712 if ((retval = image_elf_read_headers(image)) != ERROR_OK)
713 {
714 fileio_close(&image_elf->fileio);
715 return retval;
716 }
717 }
718 else if (image->type == IMAGE_MEMORY)
719 {
720 target_t *target = get_target_by_num(strtoul(url, NULL, 0));
721 if (target==NULL)
722 {
723 LOG_ERROR("Target '%s' does not exist", url);
724 return ERROR_FAIL;
725 }
726
727 image_memory_t *image_memory;
728
729 image->num_sections = 1;
730 image->sections = malloc(sizeof(image_section_t));
731 image->sections[0].base_address = 0x0;
732 image->sections[0].size = 0xffffffff;
733 image->sections[0].flags = 0;
734
735 image_memory = image->type_private = malloc(sizeof(image_memory_t));
736
737 image_memory->target = target;
738 image_memory->cache = NULL;
739 image_memory->cache_address = 0x0;
740 }
741 else if (image->type == IMAGE_SRECORD)
742 {
743 image_mot_t *image_mot;
744
745 image_mot = image->type_private = malloc(sizeof(image_mot_t));
746
747 if ((retval = fileio_open(&image_mot->fileio, url, FILEIO_READ, FILEIO_TEXT)) != ERROR_OK)
748 {
749 return retval;
750 }
751
752 if ((retval = image_mot_buffer_complete(image)) != ERROR_OK)
753 {
754 LOG_ERROR("failed buffering S19 image, check daemon output for additional information");
755 fileio_close(&image_mot->fileio);
756 return retval;
757 }
758 }
759 else if (image->type == IMAGE_BUILDER)
760 {
761 image->num_sections = 0;
762 image->sections = NULL;
763 image->type_private = NULL;
764 }
765
766 if (image->base_address_set)
767 {
768 /* relocate */
769 int section;
770 for (section=0; section < image->num_sections; section++)
771 {
772 image->sections[section].base_address+=image->base_address;
773 }
774 /* we're done relocating. The two statements below are mainly
775 * for documenation purposes: stop anyone from empirically
776 * thinking they should use these values henceforth. */
777 image->base_address=0;
778 image->base_address_set=0;
779 }
780
781 return retval;
782 };
783
784 int image_read_section(image_t *image, int section, u32 offset, u32 size, u8 *buffer, u32 *size_read)
785 {
786 int retval;
787
788 /* don't read past the end of a section */
789 if (offset + size > image->sections[section].size)
790 {
791 LOG_DEBUG("read past end of section: 0x%8.8x + 0x%8.8x > 0x%8.8x",
792 offset, size, image->sections[section].size);
793 return ERROR_INVALID_ARGUMENTS;
794 }
795
796 if (image->type == IMAGE_BINARY)
797 {
798 image_binary_t *image_binary = image->type_private;
799
800 /* only one section in a plain binary */
801 if (section != 0)
802 return ERROR_INVALID_ARGUMENTS;
803
804 /* seek to offset */
805 if ((retval = fileio_seek(&image_binary->fileio, offset)) != ERROR_OK)
806 {
807 return retval;
808 }
809
810 /* return requested bytes */
811 if ((retval = fileio_read(&image_binary->fileio, size, buffer, size_read)) != ERROR_OK)
812 {
813 return retval;
814 }
815 }
816 else if (image->type == IMAGE_IHEX)
817 {
818 memcpy(buffer, (u8*)image->sections[section].private + offset, size);
819 *size_read = size;
820
821 return ERROR_OK;
822 }
823 else if (image->type == IMAGE_ELF)
824 {
825 return image_elf_read_section(image, section, offset, size, buffer, size_read);
826 }
827 else if (image->type == IMAGE_MEMORY)
828 {
829 image_memory_t *image_memory = image->type_private;
830 u32 address = image->sections[section].base_address + offset;
831
832 *size_read = 0;
833
834 while ((size - *size_read) > 0)
835 {
836 u32 size_in_cache;
837
838 if (!image_memory->cache
839 || (address < image_memory->cache_address)
840 || (address >= (image_memory->cache_address + IMAGE_MEMORY_CACHE_SIZE)))
841 {
842 if (!image_memory->cache)
843 image_memory->cache = malloc(IMAGE_MEMORY_CACHE_SIZE);
844
845 if (target_read_buffer(image_memory->target, address & ~(IMAGE_MEMORY_CACHE_SIZE - 1),
846 IMAGE_MEMORY_CACHE_SIZE, image_memory->cache) != ERROR_OK)
847 {
848 free(image_memory->cache);
849 image_memory->cache = NULL;
850 return ERROR_IMAGE_TEMPORARILY_UNAVAILABLE;
851 }
852 image_memory->cache_address = address & ~(IMAGE_MEMORY_CACHE_SIZE - 1);
853 }
854
855 size_in_cache = (image_memory->cache_address + IMAGE_MEMORY_CACHE_SIZE) - address;
856
857 memcpy(buffer + *size_read,
858 image_memory->cache + (address - image_memory->cache_address),
859 (size_in_cache > size) ? size : size_in_cache
860 );
861
862 *size_read += (size_in_cache > size) ? size : size_in_cache;
863 address += (size_in_cache > size) ? size : size_in_cache;
864 }
865 }
866 else if (image->type == IMAGE_SRECORD)
867 {
868 memcpy(buffer, (u8*)image->sections[section].private + offset, size);
869 *size_read = size;
870
871 return ERROR_OK;
872 }
873 else if (image->type == IMAGE_BUILDER)
874 {
875 memcpy(buffer, (u8*)image->sections[section].private + offset, size);
876 *size_read = size;
877
878 return ERROR_OK;
879 }
880
881 return ERROR_OK;
882 }
883
884 int image_add_section(image_t *image, u32 base, u32 size, int flags, u8 *data)
885 {
886 image_section_t *section;
887
888 /* only image builder supports adding sections */
889 if (image->type != IMAGE_BUILDER)
890 return ERROR_INVALID_ARGUMENTS;
891
892 /* see if there's a previous section */
893 if (image->num_sections)
894 {
895 section = &image->sections[image->num_sections - 1];
896
897 /* see if it's enough to extend the last section,
898 * adding data to previous sections or merging is not supported */
899 if (((section->base_address + section->size) == base) && (section->flags == flags))
900 {
901 section->private = realloc(section->private, section->size + size);
902 memcpy((u8*)section->private + section->size, data, size);
903 section->size += size;
904 return ERROR_OK;
905 }
906 }
907
908 /* allocate new section */
909 image->num_sections++;
910 image->sections = realloc(image->sections, sizeof(image_section_t) * image->num_sections);
911 section = &image->sections[image->num_sections - 1];
912 section->base_address = base;
913 section->size = size;
914 section->flags = flags;
915 section->private = malloc(sizeof(u8) * size);
916 memcpy((u8*)section->private, data, size);
917
918 return ERROR_OK;
919 }
920
921 void image_close(image_t *image)
922 {
923 if (image->type == IMAGE_BINARY)
924 {
925 image_binary_t *image_binary = image->type_private;
926
927 fileio_close(&image_binary->fileio);
928 }
929 else if (image->type == IMAGE_IHEX)
930 {
931 image_ihex_t *image_ihex = image->type_private;
932
933 fileio_close(&image_ihex->fileio);
934
935 if (image_ihex->buffer)
936 {
937 free(image_ihex->buffer);
938 image_ihex->buffer = NULL;
939 }
940 }
941 else if (image->type == IMAGE_ELF)
942 {
943 image_elf_t *image_elf = image->type_private;
944
945 fileio_close(&image_elf->fileio);
946
947 if (image_elf->header)
948 {
949 free(image_elf->header);
950 image_elf->header = NULL;
951 }
952
953 if (image_elf->segments)
954 {
955 free(image_elf->segments);
956 image_elf->segments = NULL;
957 }
958 }
959 else if (image->type == IMAGE_MEMORY)
960 {
961 image_memory_t *image_memory = image->type_private;
962
963 if (image_memory->cache)
964 {
965 free(image_memory->cache);
966 image_memory->cache = NULL;
967 }
968 }
969 else if (image->type == IMAGE_SRECORD)
970 {
971 image_mot_t *image_mot = image->type_private;
972
973 fileio_close(&image_mot->fileio);
974
975 if (image_mot->buffer)
976 {
977 free(image_mot->buffer);
978 image_mot->buffer = NULL;
979 }
980 }
981 else if (image->type == IMAGE_BUILDER)
982 {
983 int i;
984
985 for (i = 0; i < image->num_sections; i++)
986 {
987 free(image->sections[i].private);
988 image->sections[i].private = NULL;
989 }
990 }
991
992 if (image->type_private)
993 {
994 free(image->type_private);
995 image->type_private = NULL;
996 }
997
998 if (image->sections)
999 {
1000 free(image->sections);
1001 image->sections = NULL;
1002 }
1003 }
1004
1005 int image_calculate_checksum(u8* buffer, u32 nbytes, u32* checksum)
1006 {
1007 u32 crc = 0xffffffff;
1008 LOG_DEBUG("Calculating checksum");
1009
1010 u32 crc32_table[256];
1011
1012 /* Initialize the CRC table and the decoding table. */
1013 int i, j;
1014 unsigned int c;
1015 for (i = 0; i < 256; i++)
1016 {
1017 /* as per gdb */
1018 for (c = i << 24, j = 8; j > 0; --j)
1019 c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1);
1020 crc32_table[i] = c;
1021 }
1022
1023 while (nbytes>0)
1024 {
1025 int run=nbytes;
1026 if (run>32768)
1027 {
1028 run=32768;
1029 }
1030 nbytes-=run;
1031 while (run--)
1032 {
1033 /* as per gdb */
1034 crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buffer++) & 255];
1035 }
1036 keep_alive();
1037 }
1038
1039 LOG_DEBUG("Calculating checksum done");
1040
1041 *checksum = crc;
1042 return ERROR_OK;
1043 }
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