1 /***************************************************************************
2 * Copyright (C) 2007 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
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. *
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. *
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 ***************************************************************************/
33 #include "replacements.h"
39 /* convert ELF header field to host endianness */
40 #define field16(elf, field)\
41 ((elf->endianness == ELFDATA2LSB)? \
42 le_to_h_u16((u8*)&field) : be_to_h_u16((u8*)&field))
44 #define field32(elf, field)\
45 ((elf->endianness == ELFDATA2LSB)? \
46 le_to_h_u32((u8*)&field) : be_to_h_u32((u8*)&field))
48 static int autodetect_image_type(image_t *image, char *url)
55 /* read the first 4 bytes of image */
56 if ((retval = fileio_open(&fileio, url, FILEIO_READ, FILEIO_BINARY)) != ERROR_OK)
58 snprintf(image->error_str, IMAGE_MAX_ERROR_STRING, "cannot open image: %s", fileio.error_str);
59 ERROR(image->error_str);
62 if ((retval = fileio_read(&fileio, 9, buffer, &read_bytes)) != ERROR_OK)
64 snprintf(image->error_str, IMAGE_MAX_ERROR_STRING, "cannot read image header: %s", fileio.error_str);
65 ERROR(image->error_str);
66 return ERROR_FILEIO_OPERATION_FAILED;
70 snprintf(image->error_str, IMAGE_MAX_ERROR_STRING, "cannot read image, only partially read");
71 ERROR(image->error_str);
72 return ERROR_FILEIO_OPERATION_FAILED;
74 fileio_close(&fileio);
76 /* check header against known signatures */
77 if (strncmp((char*)buffer,ELFMAG,SELFMAG)==0)
79 DEBUG("ELF image detected.");
80 image->type = IMAGE_ELF;
82 else if ((buffer[0] == ':') /* record start byte */
83 &&(isxdigit(buffer[1]))
84 &&(isxdigit(buffer[2]))
85 &&(isxdigit(buffer[3]))
86 &&(isxdigit(buffer[4]))
87 &&(isxdigit(buffer[5]))
88 &&(isxdigit(buffer[6]))
89 &&(buffer[7] == '0') /* record type : 00 -> 05 */
90 &&(buffer[8] >= '0') && (buffer[8] < '6'))
92 DEBUG("IHEX image detected.");
93 image->type = IMAGE_IHEX;
95 else if ((buffer[0] == 'S') /* record start byte */
96 &&(isxdigit(buffer[1]))
97 &&(isxdigit(buffer[2]))
98 &&(isxdigit(buffer[3]))
99 &&(buffer[1] >= '0') && (buffer[1] < '9'))
101 DEBUG("S19 image detected.");
102 image->type = IMAGE_SRECORD;
106 image->type = IMAGE_BINARY;
112 int identify_image_type(image_t *image, char *type_string, char *url)
116 if (!strcmp(type_string, "bin"))
118 image->type = IMAGE_BINARY;
120 else if (!strcmp(type_string, "ihex"))
122 image->type = IMAGE_IHEX;
124 else if (!strcmp(type_string, "elf"))
126 image->type = IMAGE_ELF;
128 else if (!strcmp(type_string, "mem"))
130 image->type = IMAGE_MEMORY;
132 else if (!strcmp(type_string, "s19"))
134 image->type = IMAGE_SRECORD;
136 else if (!strcmp(type_string, "build"))
138 image->type = IMAGE_BUILDER;
142 return ERROR_IMAGE_TYPE_UNKNOWN;
147 return autodetect_image_type(image, url);
153 int image_ihex_buffer_complete(image_t *image)
155 image_ihex_t *ihex = image->type_private;
156 fileio_t *fileio = &ihex->fileio;
157 u32 full_address = 0x0;
162 /* we can't determine the number of sections that we'll have to create ahead of time,
163 * so we locally hold them until parsing is finished */
164 image_section_t section[IMAGE_MAX_SECTIONS];
166 ihex->buffer = malloc(fileio->size >> 1);
168 image->num_sections = 0;
169 section[image->num_sections].private = &ihex->buffer[cooked_bytes];
170 section[image->num_sections].base_address = 0x0;
171 section[image->num_sections].size = 0x0;
172 section[image->num_sections].flags = 0;
174 while (fileio_fgets(fileio, 1023, lpszLine) == ERROR_OK)
183 if (sscanf(&lpszLine[bytes_read], ":%2x%4x%2x", &count, &address, &record_type) != 3)
185 return ERROR_IMAGE_FORMAT_ERROR;
189 cal_checksum += (u8)count;
190 cal_checksum += (u8)(address >> 8);
191 cal_checksum += (u8)address;
192 cal_checksum += (u8)record_type;
194 if (record_type == 0) /* Data Record */
196 if ((full_address & 0xffff) != address)
198 /* we encountered a nonconsecutive location, create a new section,
199 * unless the current section has zero size, in which case this specifies
200 * the current section's base address
202 if (section[image->num_sections].size != 0)
204 image->num_sections++;
205 section[image->num_sections].size = 0x0;
206 section[image->num_sections].flags = 0;
207 section[image->num_sections].private = &ihex->buffer[cooked_bytes];
209 section[image->num_sections].base_address =
210 (full_address & 0xffff0000) | address;
211 full_address = (full_address & 0xffff0000) | address;
216 sscanf(&lpszLine[bytes_read], "%2x", (u32*)&ihex->buffer[cooked_bytes]);
217 cal_checksum += (u8)ihex->buffer[cooked_bytes];
220 section[image->num_sections].size += 1;
224 else if (record_type == 1) /* End of File Record */
226 /* finish the current section */
227 image->num_sections++;
229 /* copy section information */
230 image->sections = malloc(sizeof(image_section_t) * image->num_sections);
231 for (i = 0; i < image->num_sections; i++)
233 image->sections[i].private = section[i].private;
234 image->sections[i].base_address = section[i].base_address;
235 image->sections[i].size = section[i].size;
236 image->sections[i].flags = section[i].flags;
241 else if (record_type == 2) /* Linear Address Record */
245 sscanf(&lpszLine[bytes_read], "%4hx", &upper_address);
246 cal_checksum += (u8)(upper_address >> 8);
247 cal_checksum += (u8)upper_address;
250 if ((full_address >> 4) != upper_address)
252 /* we encountered a nonconsecutive location, create a new section,
253 * unless the current section has zero size, in which case this specifies
254 * the current section's base address
256 if (section[image->num_sections].size != 0)
258 image->num_sections++;
259 section[image->num_sections].size = 0x0;
260 section[image->num_sections].flags = 0;
261 section[image->num_sections].private = &ihex->buffer[cooked_bytes];
263 section[image->num_sections].base_address =
264 (full_address & 0xffff) | (upper_address << 4);
265 full_address = (full_address & 0xffff) | (upper_address << 4);
268 else if (record_type == 3) /* Start Segment Address Record */
272 /* "Start Segment Address Record" will not be supported */
273 /* but we must consume it, and do not create an error. */
276 sscanf(&lpszLine[bytes_read], "%2x", &dummy);
277 cal_checksum += (u8)dummy;
281 else if (record_type == 4) /* Extended Linear Address Record */
285 sscanf(&lpszLine[bytes_read], "%4hx", &upper_address);
286 cal_checksum += (u8)(upper_address >> 8);
287 cal_checksum += (u8)upper_address;
290 if ((full_address >> 16) != upper_address)
292 /* we encountered a nonconsecutive location, create a new section,
293 * unless the current section has zero size, in which case this specifies
294 * the current section's base address
296 if (section[image->num_sections].size != 0)
298 image->num_sections++;
299 section[image->num_sections].size = 0x0;
300 section[image->num_sections].flags = 0;
301 section[image->num_sections].private = &ihex->buffer[cooked_bytes];
303 section[image->num_sections].base_address =
304 (full_address & 0xffff) | (upper_address << 16);
305 full_address = (full_address & 0xffff) | (upper_address << 16);
308 else if (record_type == 5) /* Start Linear Address Record */
312 sscanf(&lpszLine[bytes_read], "%8x", &start_address);
313 cal_checksum += (u8)(start_address >> 24);
314 cal_checksum += (u8)(start_address >> 16);
315 cal_checksum += (u8)(start_address >> 8);
316 cal_checksum += (u8)start_address;
319 image->start_address_set = 1;
320 image->start_address = be_to_h_u32((u8*)&start_address);
324 ERROR("unhandled IHEX record type: %i", record_type);
325 return ERROR_IMAGE_FORMAT_ERROR;
328 sscanf(&lpszLine[bytes_read], "%2x", &checksum);
331 if ((u8)checksum != (u8)(~cal_checksum + 1))
333 /* checksum failed */
334 ERROR("incorrect record checksum found in IHEX file");
335 return ERROR_IMAGE_CHECKSUM;
339 ERROR("premature end of IHEX file, no end-of-file record found");
340 return ERROR_IMAGE_FORMAT_ERROR;
343 int image_elf_read_headers(image_t *image)
345 image_elf_t *elf = image->type_private;
350 elf->header = malloc(sizeof(Elf32_Ehdr));
352 if ((retval = fileio_read(&elf->fileio, sizeof(Elf32_Ehdr), (u8*)elf->header, &read_bytes)) != ERROR_OK)
354 ERROR("cannot read ELF file header, read failed");
355 return ERROR_FILEIO_OPERATION_FAILED;
357 if (read_bytes != sizeof(Elf32_Ehdr))
359 ERROR("cannot read ELF file header, only partially read");
360 return ERROR_FILEIO_OPERATION_FAILED;
363 if (strncmp((char*)elf->header->e_ident,ELFMAG,SELFMAG)!=0)
365 ERROR("invalid ELF file, bad magic number");
366 return ERROR_IMAGE_FORMAT_ERROR;
368 if (elf->header->e_ident[EI_CLASS]!=ELFCLASS32)
370 ERROR("invalid ELF file, only 32bits files are supported");
371 return ERROR_IMAGE_FORMAT_ERROR;
375 elf->endianness = elf->header->e_ident[EI_DATA];
376 if ((elf->endianness!=ELFDATA2LSB)
377 &&(elf->endianness!=ELFDATA2MSB))
379 ERROR("invalid ELF file, unknown endianess setting");
380 return ERROR_IMAGE_FORMAT_ERROR;
383 elf->segment_count = field16(elf,elf->header->e_phnum);
384 if (elf->segment_count==0)
386 ERROR("invalid ELF file, no program headers");
387 return ERROR_IMAGE_FORMAT_ERROR;
390 elf->segments = malloc(elf->segment_count*sizeof(Elf32_Phdr));
392 if ((retval = fileio_read(&elf->fileio, elf->segment_count*sizeof(Elf32_Phdr), (u8*)elf->segments, &read_bytes)) != ERROR_OK)
394 ERROR("cannot read ELF segment headers, read failed");
397 if (read_bytes != elf->segment_count*sizeof(Elf32_Phdr))
399 ERROR("cannot read ELF segment headers, only partially read");
400 return ERROR_FILEIO_OPERATION_FAILED;
403 /* count useful segments (loadable), ignore BSS section */
404 image->num_sections = 0;
405 for (i = 0; i < elf->segment_count; i++)
406 if ((field32(elf, elf->segments[i].p_type) == PT_LOAD) && (field32(elf, elf->segments[i].p_filesz) != 0))
407 image->num_sections++;
408 /* alloc and fill sections array with loadable segments */
409 image->sections = malloc(image->num_sections * sizeof(image_section_t));
410 for (i = 0, j = 0; i < elf->segment_count; i++)
412 if ((field32(elf, elf->segments[i].p_type) == PT_LOAD) && (field32(elf, elf->segments[i].p_filesz) != 0))
414 image->sections[j].size = field32(elf,elf->segments[i].p_memsz);
415 image->sections[j].base_address = field32(elf,elf->segments[i].p_paddr);
416 image->sections[j].private = &elf->segments[i];
417 image->sections[j].flags = field32(elf,elf->segments[i].p_flags);
422 image->start_address_set = 1;
423 image->start_address = field32(elf,elf->header->e_entry);
428 int image_elf_read_section(image_t *image, int section, u32 offset, u32 size, u8 *buffer, u32 *size_read)
430 image_elf_t *elf = image->type_private;
431 Elf32_Phdr *segment = (Elf32_Phdr *)image->sections[section].private;
432 u32 read_size, really_read;
437 DEBUG("load segment %d at 0x%x (sz = 0x%x)", section, offset, size);
439 /* read initialized data in current segment if any */
440 if (offset < field32(elf, segment->p_filesz))
442 /* maximal size present in file for the current segment */
443 read_size = MIN(size, field32(elf, segment->p_filesz) - offset);
444 DEBUG("read elf: size = 0x%x at 0x%x", read_size,
445 field32(elf,segment->p_offset) + offset);
446 /* read initialized area of the segment */
447 if ((retval = fileio_seek(&elf->fileio, field32(elf,segment->p_offset) + offset)) != ERROR_OK)
449 ERROR("cannot find ELF segment content, seek failed");
452 if ((retval = fileio_read(&elf->fileio, read_size, buffer, &really_read)) != ERROR_OK)
454 ERROR("cannot read ELF segment content, read failed");
460 *size_read += read_size;
461 /* need more data ? */
465 /* if there is remaining zeroed area in current segment */
466 if (offset < field32(elf, segment->p_memsz))
468 /* fill zeroed part (BSS) of the segment */
469 read_size = MIN(size, field32(elf, segment->p_memsz) - offset);
470 DEBUG("zero fill: size = 0x%x", read_size);
471 memset(buffer, 0, read_size);
472 *size_read += read_size;
478 int image_mot_buffer_complete(image_t *image)
480 image_mot_t *mot = image->type_private;
481 fileio_t *fileio = &mot->fileio;
482 u32 full_address = 0x0;
487 /* we can't determine the number of sections that we'll have to create ahead of time,
488 * so we locally hold them until parsing is finished */
489 image_section_t section[IMAGE_MAX_SECTIONS];
491 mot->buffer = malloc(fileio->size >> 1);
493 image->num_sections = 0;
494 section[image->num_sections].private = &mot->buffer[cooked_bytes];
495 section[image->num_sections].base_address = 0x0;
496 section[image->num_sections].size = 0x0;
497 section[image->num_sections].flags = 0;
499 while (fileio_fgets(fileio, 1023, lpszLine) == ERROR_OK)
508 /* get record type and record length */
509 if (sscanf(&lpszLine[bytes_read], "S%1x%2x", &record_type, &count) != 2)
511 return ERROR_IMAGE_FORMAT_ERROR;
515 cal_checksum += (u8)count;
517 /* skip checksum byte */
520 if (record_type == 0)
522 /* S0 - starting record (optional) */
525 while (count-- > 0) {
526 sscanf(&lpszLine[bytes_read], "%2x", &iValue);
527 cal_checksum += (u8)iValue;
531 else if (record_type >= 1 && record_type <= 3)
533 switch( record_type )
536 /* S1 - 16 bit address data record */
537 sscanf(&lpszLine[bytes_read], "%4x", &address);
538 cal_checksum += (u8)(address >> 8);
539 cal_checksum += (u8)address;
545 /* S2 - 24 bit address data record */
546 sscanf(&lpszLine[bytes_read], "%6x", &address);
547 cal_checksum += (u8)(address >> 16);
548 cal_checksum += (u8)(address >> 8);
549 cal_checksum += (u8)address;
555 /* S3 - 32 bit address data record */
556 sscanf(&lpszLine[bytes_read], "%8x", &address);
557 cal_checksum += (u8)(address >> 24);
558 cal_checksum += (u8)(address >> 16);
559 cal_checksum += (u8)(address >> 8);
560 cal_checksum += (u8)address;
566 if (full_address != address)
568 /* we encountered a nonconsecutive location, create a new section,
569 * unless the current section has zero size, in which case this specifies
570 * the current section's base address
572 if (section[image->num_sections].size != 0)
574 image->num_sections++;
575 section[image->num_sections].size = 0x0;
576 section[image->num_sections].flags = 0;
577 section[image->num_sections].private = &mot->buffer[cooked_bytes];
579 section[image->num_sections].base_address = address;
580 full_address = address;
585 sscanf(&lpszLine[bytes_read], "%2x", (u32*)&mot->buffer[cooked_bytes]);
586 cal_checksum += (u8)mot->buffer[cooked_bytes];
589 section[image->num_sections].size += 1;
593 else if (record_type == 5)
595 /* S5 is the data count record, we ignore it */
600 sscanf(&lpszLine[bytes_read], "%2x", &dummy);
601 cal_checksum += (u8)dummy;
605 else if (record_type >= 7 && record_type <= 9)
607 /* S7, S8, S9 - ending records for 32, 24 and 16bit */
608 image->num_sections++;
610 /* copy section information */
611 image->sections = malloc(sizeof(image_section_t) * image->num_sections);
612 for (i = 0; i < image->num_sections; i++)
614 image->sections[i].private = section[i].private;
615 image->sections[i].base_address = section[i].base_address;
616 image->sections[i].size = section[i].size;
617 image->sections[i].flags = section[i].flags;
624 ERROR("unhandled S19 record type: %i", record_type);
625 return ERROR_IMAGE_FORMAT_ERROR;
628 /* account for checksum, will always be 0xFF */
629 sscanf(&lpszLine[bytes_read], "%2x", &checksum);
630 cal_checksum += (u8)checksum;
633 if( cal_checksum != 0xFF )
635 /* checksum failed */
636 ERROR("incorrect record checksum found in S19 file");
637 return ERROR_IMAGE_CHECKSUM;
641 ERROR("premature end of S19 file, no end-of-file record found");
642 return ERROR_IMAGE_FORMAT_ERROR;
645 int image_open(image_t *image, char *url, char *type_string)
647 int retval = ERROR_OK;
649 if ((retval = identify_image_type(image, type_string, url)) != ERROR_OK)
654 if (image->type == IMAGE_BINARY)
656 image_binary_t *image_binary;
658 image_binary = image->type_private = malloc(sizeof(image_binary_t));
660 if ((retval = fileio_open(&image_binary->fileio, url, FILEIO_READ, FILEIO_BINARY)) != ERROR_OK)
662 strncpy(image->error_str, image_binary->fileio.error_str, IMAGE_MAX_ERROR_STRING);
663 ERROR(image->error_str);
667 image->num_sections = 1;
668 image->sections = malloc(sizeof(image_section_t));
669 image->sections[0].base_address = 0x0;
670 image->sections[0].size = image_binary->fileio.size;
671 image->sections[0].flags = 0;
673 else if (image->type == IMAGE_IHEX)
675 image_ihex_t *image_ihex;
677 image_ihex = image->type_private = malloc(sizeof(image_ihex_t));
679 if ((retval = fileio_open(&image_ihex->fileio, url, FILEIO_READ, FILEIO_TEXT)) != ERROR_OK)
681 strncpy(image->error_str, image_ihex->fileio.error_str, IMAGE_MAX_ERROR_STRING);
682 ERROR(image->error_str);
686 if ((retval = image_ihex_buffer_complete(image)) != ERROR_OK)
688 snprintf(image->error_str, IMAGE_MAX_ERROR_STRING,
689 "failed buffering IHEX image, check daemon output for additional information");
690 ERROR(image->error_str);
691 fileio_close(&image_ihex->fileio);
695 else if (image->type == IMAGE_ELF)
697 image_elf_t *image_elf;
699 image_elf = image->type_private = malloc(sizeof(image_elf_t));
701 if ((retval = fileio_open(&image_elf->fileio, url, FILEIO_READ, FILEIO_BINARY)) != ERROR_OK)
703 strncpy(image->error_str, image_elf->fileio.error_str, IMAGE_MAX_ERROR_STRING);
704 ERROR(image->error_str);
708 if ((retval = image_elf_read_headers(image)) != ERROR_OK)
710 snprintf(image->error_str, IMAGE_MAX_ERROR_STRING,
711 "failed to read ELF headers, check daemon output for additional information");
712 ERROR(image->error_str);
713 fileio_close(&image_elf->fileio);
717 else if (image->type == IMAGE_MEMORY)
719 image_memory_t *image_memory;
721 image->num_sections = 1;
722 image->sections = malloc(sizeof(image_section_t));
723 image->sections[0].base_address = 0x0;
724 image->sections[0].size = 0xffffffff;
725 image->sections[0].flags = 0;
727 image_memory = image->type_private = malloc(sizeof(image_memory_t));
729 image_memory->target = get_target_by_num(strtoul(url, NULL, 0));;
730 image_memory->cache = NULL;
731 image_memory->cache_address = 0x0;
733 else if (image->type == IMAGE_SRECORD)
735 image_mot_t *image_mot;
737 image_mot = image->type_private = malloc(sizeof(image_mot_t));
739 if ((retval = fileio_open(&image_mot->fileio, url, FILEIO_READ, FILEIO_TEXT)) != ERROR_OK)
741 strncpy(image->error_str, image_mot->fileio.error_str, IMAGE_MAX_ERROR_STRING);
742 ERROR(image->error_str);
746 if ((retval = image_mot_buffer_complete(image)) != ERROR_OK)
748 snprintf(image->error_str, IMAGE_MAX_ERROR_STRING,
749 "failed buffering S19 image, check daemon output for additional information");
750 ERROR(image->error_str);
751 fileio_close(&image_mot->fileio);
755 else if (image->type == IMAGE_BUILDER)
757 image->num_sections = 0;
758 image->sections = NULL;
759 image->type_private = NULL;
762 if (image->base_address_set)
766 for (section = 0; section < image->num_sections; section++)
768 image->sections[section].base_address += image->base_address;
770 /* we're done relocating. The two statements below are mainly
771 * for documenation purposes: stop anyone from empirically
772 * thinking they should use these values henceforth. */
773 image->base_address = 0;
774 image->base_address_set = 0;
780 int image_read_section(image_t *image, int section, u32 offset, u32 size, u8 *buffer, u32 *size_read)
784 /* don't read past the end of a section */
785 if (offset + size > image->sections[section].size)
787 DEBUG("read past end of section: 0x%8.8x + 0x%8.8x > 0x%8.8x",
788 offset, size, image->sections[section].size);
789 return ERROR_INVALID_ARGUMENTS;
792 if (image->type == IMAGE_BINARY)
794 image_binary_t *image_binary = image->type_private;
796 /* only one section in a plain binary */
798 return ERROR_INVALID_ARGUMENTS;
801 if ((retval = fileio_seek(&image_binary->fileio, offset)) != ERROR_OK)
803 strncpy(image->error_str, image_binary->fileio.error_str, IMAGE_MAX_ERROR_STRING);
807 /* return requested bytes */
808 if ((retval = fileio_read(&image_binary->fileio, size, buffer, size_read)) != ERROR_OK)
810 strncpy(image->error_str, image_binary->fileio.error_str, IMAGE_MAX_ERROR_STRING);
814 else if (image->type == IMAGE_IHEX)
816 memcpy(buffer, (u8*)image->sections[section].private + offset, size);
818 image->error_str[0] = '\0';
822 else if (image->type == IMAGE_ELF)
824 return image_elf_read_section(image, section, offset, size, buffer, size_read);
826 else if (image->type == IMAGE_MEMORY)
828 image_memory_t *image_memory = image->type_private;
829 u32 address = image->sections[section].base_address + offset;
833 while ((size - *size_read) > 0)
837 if (!image_memory->cache
838 || (address < image_memory->cache_address)
839 || (address >= (image_memory->cache_address + IMAGE_MEMORY_CACHE_SIZE)))
841 if (!image_memory->cache)
842 image_memory->cache = malloc(IMAGE_MEMORY_CACHE_SIZE);
844 if (target_read_buffer(image_memory->target, address & ~(IMAGE_MEMORY_CACHE_SIZE - 1),
845 IMAGE_MEMORY_CACHE_SIZE, image_memory->cache) != ERROR_OK)
847 free(image_memory->cache);
848 image_memory->cache = NULL;
849 return ERROR_IMAGE_TEMPORARILY_UNAVAILABLE;
851 image_memory->cache_address = address & ~(IMAGE_MEMORY_CACHE_SIZE - 1);
854 size_in_cache = (image_memory->cache_address + IMAGE_MEMORY_CACHE_SIZE) - address;
856 memcpy(buffer + *size_read,
857 image_memory->cache + (address - image_memory->cache_address),
858 (size_in_cache > size) ? size : size_in_cache
861 *size_read += (size_in_cache > size) ? size : size_in_cache;
862 address += (size_in_cache > size) ? size : size_in_cache;
865 else if (image->type == IMAGE_SRECORD)
867 memcpy(buffer, (u8*)image->sections[section].private + offset, size);
869 image->error_str[0] = '\0';
873 else if (image->type == IMAGE_BUILDER)
875 memcpy(buffer, (u8*)image->sections[section].private + offset, size);
877 image->error_str[0] = '\0';
885 int image_add_section(image_t *image, u32 base, u32 size, int flags, u8 *data)
887 image_section_t *section;
889 /* only image builder supports adding sections */
890 if (image->type != IMAGE_BUILDER)
891 return ERROR_INVALID_ARGUMENTS;
893 /* see if there's a previous section */
894 if (image->num_sections)
896 section = &image->sections[image->num_sections - 1];
898 /* see if it's enough to extend the last section,
899 * adding data to previous sections or merging is not supported */
900 if (((section->base_address + section->size) == base) && (section->flags == flags))
902 section->private = realloc(section->private, section->size + size);
903 memcpy((u8*)section->private + section->size, data, size);
904 section->size += size;
909 /* allocate new section */
910 image->num_sections++;
911 image->sections = realloc(image->sections, sizeof(image_section_t) * image->num_sections);
912 section = &image->sections[image->num_sections - 1];
913 section->base_address = base;
914 section->size = size;
915 section->flags = flags;
916 section->private = malloc(sizeof(u8) * size);
917 memcpy((u8*)section->private, data, size);
922 int image_close(image_t *image)
924 if (image->type == IMAGE_BINARY)
926 image_binary_t *image_binary = image->type_private;
928 fileio_close(&image_binary->fileio);
930 else if (image->type == IMAGE_IHEX)
932 image_ihex_t *image_ihex = image->type_private;
934 fileio_close(&image_ihex->fileio);
936 if (image_ihex->buffer)
938 free(image_ihex->buffer);
939 image_ihex->buffer = NULL;
942 else if (image->type == IMAGE_ELF)
944 image_elf_t *image_elf = image->type_private;
946 fileio_close(&image_elf->fileio);
948 if (image_elf->header)
950 free(image_elf->header);
951 image_elf->header = NULL;
954 if (image_elf->segments)
956 free(image_elf->segments);
957 image_elf->segments = NULL;
960 else if (image->type == IMAGE_MEMORY)
962 image_memory_t *image_memory = image->type_private;
964 if (image_memory->cache)
966 free(image_memory->cache);
967 image_memory->cache = NULL;
970 else if (image->type == IMAGE_SRECORD)
972 image_mot_t *image_mot = image->type_private;
974 fileio_close(&image_mot->fileio);
976 if (image_mot->buffer)
978 free(image_mot->buffer);
979 image_mot->buffer = NULL;
982 else if (image->type == IMAGE_BUILDER)
986 for (i = 0; i < image->num_sections; i++)
988 free(image->sections[i].private);
989 image->sections[i].private = NULL;
993 if (image->type_private)
995 free(image->type_private);
996 image->type_private = NULL;
1001 free(image->sections);
1002 image->sections = NULL;
1008 static u32 crc32_table[256] = {0, 0};
1010 int image_calculate_checksum(u8* buffer, u32 nbytes, u32* checksum)
1012 u32 crc = 0xffffffff;
1014 if (!crc32_table[1])
1016 /* Initialize the CRC table and the decoding table. */
1019 for (i = 0; i < 256; i++)
1022 for (c = i << 24, j = 8; j > 0; --j)
1023 c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1);
1031 crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buffer++) & 255];