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->base_address_set) ? image->base_address : 0);
236 image->sections[i].size = section[i].size;
237 image->sections[i].flags = section[i].flags;
242 else if (record_type == 2) /* Linear Address Record */
246 sscanf(&lpszLine[bytes_read], "%4hx", &upper_address);
247 cal_checksum += (u8)(upper_address >> 8);
248 cal_checksum += (u8)upper_address;
251 if ((full_address >> 4) != upper_address)
253 /* we encountered a nonconsecutive location, create a new section,
254 * unless the current section has zero size, in which case this specifies
255 * the current section's base address
257 if (section[image->num_sections].size != 0)
259 image->num_sections++;
260 section[image->num_sections].size = 0x0;
261 section[image->num_sections].flags = 0;
262 section[image->num_sections].private = &ihex->buffer[cooked_bytes];
264 section[image->num_sections].base_address =
265 (full_address & 0xffff) | (upper_address << 4);
266 full_address = (full_address & 0xffff) | (upper_address << 4);
269 else if (record_type == 4) /* Extended Linear Address Record */
273 sscanf(&lpszLine[bytes_read], "%4hx", &upper_address);
274 cal_checksum += (u8)(upper_address >> 8);
275 cal_checksum += (u8)upper_address;
278 if ((full_address >> 16) != upper_address)
280 /* we encountered a nonconsecutive location, create a new section,
281 * unless the current section has zero size, in which case this specifies
282 * the current section's base address
284 if (section[image->num_sections].size != 0)
286 image->num_sections++;
287 section[image->num_sections].size = 0x0;
288 section[image->num_sections].flags = 0;
289 section[image->num_sections].private = &ihex->buffer[cooked_bytes];
291 section[image->num_sections].base_address =
292 (full_address & 0xffff) | (upper_address << 16);
293 full_address = (full_address & 0xffff) | (upper_address << 16);
296 else if (record_type == 5) /* Start Linear Address Record */
300 sscanf(&lpszLine[bytes_read], "%8x", &start_address);
301 cal_checksum += (u8)(start_address >> 24);
302 cal_checksum += (u8)(start_address >> 16);
303 cal_checksum += (u8)(start_address >> 8);
304 cal_checksum += (u8)start_address;
307 image->start_address_set = 1;
308 image->start_address = be_to_h_u32((u8*)&start_address);
312 ERROR("unhandled IHEX record type: %i", record_type);
313 return ERROR_IMAGE_FORMAT_ERROR;
316 sscanf(&lpszLine[bytes_read], "%2x", &checksum);
319 if ((u8)checksum != (u8)(~cal_checksum + 1))
321 /* checksum failed */
322 ERROR("incorrect record checksum found in IHEX file");
323 return ERROR_IMAGE_CHECKSUM;
327 ERROR("premature end of IHEX file, no end-of-file record found");
328 return ERROR_IMAGE_FORMAT_ERROR;
331 int image_elf_read_headers(image_t *image)
333 image_elf_t *elf = image->type_private;
338 elf->header = malloc(sizeof(Elf32_Ehdr));
340 if ((retval = fileio_read(&elf->fileio, sizeof(Elf32_Ehdr), (u8*)elf->header, &read_bytes)) != ERROR_OK)
342 ERROR("cannot read ELF file header, read failed");
343 return ERROR_FILEIO_OPERATION_FAILED;
345 if (read_bytes != sizeof(Elf32_Ehdr))
347 ERROR("cannot read ELF file header, only partially read");
348 return ERROR_FILEIO_OPERATION_FAILED;
351 if (strncmp((char*)elf->header->e_ident,ELFMAG,SELFMAG)!=0)
353 ERROR("invalid ELF file, bad magic number");
354 return ERROR_IMAGE_FORMAT_ERROR;
356 if (elf->header->e_ident[EI_CLASS]!=ELFCLASS32)
358 ERROR("invalid ELF file, only 32bits files are supported");
359 return ERROR_IMAGE_FORMAT_ERROR;
363 elf->endianness = elf->header->e_ident[EI_DATA];
364 if ((elf->endianness!=ELFDATA2LSB)
365 &&(elf->endianness!=ELFDATA2MSB))
367 ERROR("invalid ELF file, unknown endianess setting");
368 return ERROR_IMAGE_FORMAT_ERROR;
371 elf->segment_count = field16(elf,elf->header->e_phnum);
372 if (elf->segment_count==0)
374 ERROR("invalid ELF file, no program headers");
375 return ERROR_IMAGE_FORMAT_ERROR;
378 elf->segments = malloc(elf->segment_count*sizeof(Elf32_Phdr));
380 if ((retval = fileio_read(&elf->fileio, elf->segment_count*sizeof(Elf32_Phdr), (u8*)elf->segments, &read_bytes)) != ERROR_OK)
382 ERROR("cannot read ELF segment headers, read failed");
385 if (read_bytes != elf->segment_count*sizeof(Elf32_Phdr))
387 ERROR("cannot read ELF segment headers, only partially read");
388 return ERROR_FILEIO_OPERATION_FAILED;
391 /* count useful segments (loadable), ignore BSS section */
392 image->num_sections = 0;
393 for (i=0;i<elf->segment_count;i++)
394 if ((field32(elf, elf->segments[i].p_type) == PT_LOAD) && (field32(elf, elf->segments[i].p_filesz) != 0))
395 image->num_sections++;
396 /* alloc and fill sections array with loadable segments */
397 image->sections = malloc(image->num_sections * sizeof(image_section_t));
398 for (i=0,j=0;i<elf->segment_count;i++)
400 if ((field32(elf, elf->segments[i].p_type) == PT_LOAD) && (field32(elf, elf->segments[i].p_filesz) != 0))
402 image->sections[j].size = field32(elf,elf->segments[i].p_memsz);
403 image->sections[j].base_address = field32(elf,elf->segments[i].p_paddr);
404 image->sections[j].private = &elf->segments[i];
405 image->sections[j].flags = field32(elf,elf->segments[i].p_flags);
410 image->start_address_set = 1;
411 image->start_address = field32(elf,elf->header->e_entry);
416 int image_elf_read_section(image_t *image, int section, u32 offset, u32 size, u8 *buffer, u32 *size_read)
418 image_elf_t *elf = image->type_private;
419 Elf32_Phdr *segment = (Elf32_Phdr *)image->sections[section].private;
420 u32 read_size,really_read;
425 DEBUG("load segment %d at 0x%x (sz=0x%x)",section,offset,size);
427 /* read initialized data in current segment if any */
428 if (offset<field32(elf,segment->p_filesz))
430 /* maximal size present in file for the current segment */
431 read_size = MIN(size, field32(elf,segment->p_filesz)-offset);
432 DEBUG("read elf: size = 0x%x at 0x%x",read_size,
433 field32(elf,segment->p_offset)+offset);
434 /* read initialized area of the segment */
435 if ((retval = fileio_seek(&elf->fileio, field32(elf,segment->p_offset)+offset)) != ERROR_OK)
437 ERROR("cannot find ELF segment content, seek failed");
440 if ((retval = fileio_read(&elf->fileio, read_size, buffer, &really_read)) != ERROR_OK)
442 ERROR("cannot read ELF segment content, read failed");
448 *size_read += read_size;
449 /* need more data ? */
453 /* if there is remaining zeroed area in current segment */
454 if (offset<field32(elf,segment->p_memsz))
456 /* fill zeroed part (BSS) of the segment */
457 read_size = MIN(size, field32(elf,segment->p_memsz)-offset);
458 DEBUG("zero fill: size = 0x%x",read_size);
459 memset(buffer,0,read_size);
460 *size_read += read_size;
466 int image_mot_buffer_complete(image_t *image)
468 image_mot_t *mot = image->type_private;
469 fileio_t *fileio = &mot->fileio;
470 u32 full_address = 0x0;
475 /* we can't determine the number of sections that we'll have to create ahead of time,
476 * so we locally hold them until parsing is finished */
477 image_section_t section[IMAGE_MAX_SECTIONS];
479 mot->buffer = malloc(fileio->size >> 1);
481 image->num_sections = 0;
482 section[image->num_sections].private = &mot->buffer[cooked_bytes];
483 section[image->num_sections].base_address = 0x0;
484 section[image->num_sections].size = 0x0;
485 section[image->num_sections].flags = 0;
487 while (fileio_fgets(fileio, 1023, lpszLine) == ERROR_OK)
496 /* get record type and record length */
497 if (sscanf(&lpszLine[bytes_read], "S%1x%2x", &record_type, &count) != 2)
499 return ERROR_IMAGE_FORMAT_ERROR;
503 cal_checksum += (u8)count;
505 /* skip checksum byte */
508 if (record_type == 0)
510 /* S0 - starting record (optional) */
513 while (count-- > 0) {
514 sscanf(&lpszLine[bytes_read], "%2x", &iValue);
515 cal_checksum += (u8)iValue;
519 else if (record_type >= 1 && record_type <= 3)
521 switch( record_type )
524 /* S1 - 16 bit address data record */
525 sscanf(&lpszLine[bytes_read], "%4x", &address);
526 cal_checksum += (u8)(address >> 8);
527 cal_checksum += (u8)address;
533 /* S2 - 24 bit address data record */
534 sscanf(&lpszLine[bytes_read], "%6x", &address);
535 cal_checksum += (u8)(address >> 16);
536 cal_checksum += (u8)(address >> 8);
537 cal_checksum += (u8)address;
543 /* S3 - 32 bit address data record */
544 sscanf(&lpszLine[bytes_read], "%8x", &address);
545 cal_checksum += (u8)(address >> 24);
546 cal_checksum += (u8)(address >> 16);
547 cal_checksum += (u8)(address >> 8);
548 cal_checksum += (u8)address;
555 if (full_address != address)
557 /* we encountered a nonconsecutive location, create a new section,
558 * unless the current section has zero size, in which case this specifies
559 * the current section's base address
561 if (section[image->num_sections].size != 0)
563 image->num_sections++;
564 section[image->num_sections].size = 0x0;
565 section[image->num_sections].flags = 0;
566 section[image->num_sections].private = &mot->buffer[cooked_bytes];
568 section[image->num_sections].base_address = address;
569 full_address = address;
574 sscanf(&lpszLine[bytes_read], "%2x", (u32*)&mot->buffer[cooked_bytes]);
575 cal_checksum += (u8)mot->buffer[cooked_bytes];
578 section[image->num_sections].size += 1;
582 else if (record_type >= 7 && record_type <= 9)
584 /* S7, S8, S9 - ending records for 32, 24 and 16bit */
585 image->num_sections++;
587 /* copy section information */
588 image->sections = malloc(sizeof(image_section_t) * image->num_sections);
589 for (i = 0; i < image->num_sections; i++)
591 image->sections[i].private = section[i].private;
592 image->sections[i].base_address = section[i].base_address +
593 ((image->base_address_set) ? image->base_address : 0);
594 image->sections[i].size = section[i].size;
595 image->sections[i].flags = section[i].flags;
602 ERROR("unhandled S19 record type: %i", record_type);
603 return ERROR_IMAGE_FORMAT_ERROR;
606 /* account for checksum, will always be 0xFF */
607 sscanf(&lpszLine[bytes_read], "%2x", &checksum);
608 cal_checksum += (u8)checksum;
611 if( cal_checksum != 0xFF )
613 /* checksum failed */
614 ERROR("incorrect record checksum found in S19 file");
615 return ERROR_IMAGE_CHECKSUM;
619 ERROR("premature end of S19 file, no end-of-file record found");
620 return ERROR_IMAGE_FORMAT_ERROR;
623 int image_open(image_t *image, char *url, char *type_string)
625 int retval = ERROR_OK;
627 if ((retval = identify_image_type(image, type_string, url)) != ERROR_OK)
632 if (image->type == IMAGE_BINARY)
634 image_binary_t *image_binary;
636 image_binary = image->type_private = malloc(sizeof(image_binary_t));
638 if ((retval = fileio_open(&image_binary->fileio, url, FILEIO_READ, FILEIO_BINARY)) != ERROR_OK)
640 strncpy(image->error_str, image_binary->fileio.error_str, IMAGE_MAX_ERROR_STRING);
641 ERROR(image->error_str);
645 image->num_sections = 1;
646 image->sections = malloc(sizeof(image_section_t));
647 image->sections[0].base_address = 0x0;
648 image->sections[0].size = image_binary->fileio.size;
649 image->sections[0].flags = 0;
651 if (image->base_address_set == 1)
652 image->sections[0].base_address = image->base_address;
656 else if (image->type == IMAGE_IHEX)
658 image_ihex_t *image_ihex;
660 image_ihex = image->type_private = malloc(sizeof(image_ihex_t));
662 if ((retval = fileio_open(&image_ihex->fileio, url, FILEIO_READ, FILEIO_TEXT)) != ERROR_OK)
664 strncpy(image->error_str, image_ihex->fileio.error_str, IMAGE_MAX_ERROR_STRING);
665 ERROR(image->error_str);
669 if ((retval = image_ihex_buffer_complete(image)) != ERROR_OK)
671 snprintf(image->error_str, IMAGE_MAX_ERROR_STRING,
672 "failed buffering IHEX image, check daemon output for additional information");
673 ERROR(image->error_str);
674 fileio_close(&image_ihex->fileio);
678 else if (image->type == IMAGE_ELF)
680 image_elf_t *image_elf;
682 image_elf = image->type_private = malloc(sizeof(image_elf_t));
684 if ((retval = fileio_open(&image_elf->fileio, url, FILEIO_READ, FILEIO_BINARY)) != ERROR_OK)
686 strncpy(image->error_str, image_elf->fileio.error_str, IMAGE_MAX_ERROR_STRING);
687 ERROR(image->error_str);
691 if ((retval = image_elf_read_headers(image)) != ERROR_OK)
693 snprintf(image->error_str, IMAGE_MAX_ERROR_STRING,
694 "failed to read ELF headers, check daemon output for additional information");
695 ERROR(image->error_str);
696 fileio_close(&image_elf->fileio);
700 else if (image->type == IMAGE_MEMORY)
702 image_memory_t *image_memory;
704 image->num_sections = 1;
705 image->sections = malloc(sizeof(image_section_t));
706 image->sections[0].base_address = 0x0;
707 image->sections[0].size = 0xffffffff;
708 image->sections[0].flags = 0;
710 image_memory = image->type_private = malloc(sizeof(image_memory_t));
712 image_memory->target = get_target_by_num(strtoul(url, NULL, 0));;
713 image_memory->cache = NULL;
714 image_memory->cache_address = 0x0;
716 else if (image->type == IMAGE_SRECORD)
718 image_mot_t *image_mot;
720 image_mot = image->type_private = malloc(sizeof(image_mot_t));
722 if ((retval = fileio_open(&image_mot->fileio, url, FILEIO_READ, FILEIO_TEXT)) != ERROR_OK)
724 strncpy(image->error_str, image_mot->fileio.error_str, IMAGE_MAX_ERROR_STRING);
725 ERROR(image->error_str);
729 if ((retval = image_mot_buffer_complete(image)) != ERROR_OK)
731 snprintf(image->error_str, IMAGE_MAX_ERROR_STRING,
732 "failed buffering S19 image, check daemon output for additional information");
733 ERROR(image->error_str);
734 fileio_close(&image_mot->fileio);
738 else if (image->type == IMAGE_BUILDER)
740 image->num_sections = 0;
741 image->sections = NULL;
742 image->type_private = NULL;
748 int image_read_section(image_t *image, int section, u32 offset, u32 size, u8 *buffer, u32 *size_read)
752 /* don't read past the end of a section */
753 if (offset + size > image->sections[section].size)
755 DEBUG("read past end of section: 0x%8.8x + 0x%8.8x > 0x%8.8x",
756 offset, size, image->sections[section].size);
757 return ERROR_INVALID_ARGUMENTS;
760 if (image->type == IMAGE_BINARY)
762 image_binary_t *image_binary = image->type_private;
764 /* only one section in a plain binary */
766 return ERROR_INVALID_ARGUMENTS;
769 if ((retval = fileio_seek(&image_binary->fileio, offset)) != ERROR_OK)
771 strncpy(image->error_str, image_binary->fileio.error_str, IMAGE_MAX_ERROR_STRING);
775 /* return requested bytes */
776 if ((retval = fileio_read(&image_binary->fileio, size, buffer, size_read)) != ERROR_OK)
778 strncpy(image->error_str, image_binary->fileio.error_str, IMAGE_MAX_ERROR_STRING);
782 else if (image->type == IMAGE_IHEX)
784 memcpy(buffer, (u8*)image->sections[section].private + offset, size);
786 image->error_str[0] = '\0';
790 else if (image->type == IMAGE_ELF)
792 return image_elf_read_section(image, section, offset, size, buffer, size_read);
794 else if (image->type == IMAGE_MEMORY)
796 image_memory_t *image_memory = image->type_private;
797 u32 address = image->sections[section].base_address + offset;
801 while ((size - *size_read) > 0)
805 if (!image_memory->cache
806 || (address < image_memory->cache_address)
807 || (address >= (image_memory->cache_address + IMAGE_MEMORY_CACHE_SIZE)))
809 if (!image_memory->cache)
810 image_memory->cache = malloc(IMAGE_MEMORY_CACHE_SIZE);
812 if (target_read_buffer(image_memory->target, address & ~(IMAGE_MEMORY_CACHE_SIZE - 1),
813 IMAGE_MEMORY_CACHE_SIZE, image_memory->cache) != ERROR_OK)
815 free(image_memory->cache);
816 return ERROR_IMAGE_TEMPORARILY_UNAVAILABLE;
818 image_memory->cache_address = address & ~(IMAGE_MEMORY_CACHE_SIZE - 1);
821 size_in_cache = (image_memory->cache_address + IMAGE_MEMORY_CACHE_SIZE) - address;
823 memcpy(buffer + *size_read,
824 image_memory->cache + (address - image_memory->cache_address),
825 (size_in_cache > size) ? size : size_in_cache
828 *size_read += (size_in_cache > size) ? size : size_in_cache;
829 address += (size_in_cache > size) ? size : size_in_cache;
832 else if (image->type == IMAGE_SRECORD)
834 memcpy(buffer, (u8*)image->sections[section].private + offset, size);
836 image->error_str[0] = '\0';
840 else if (image->type == IMAGE_BUILDER)
842 memcpy(buffer, (u8*)image->sections[section].private + offset, size);
844 image->error_str[0] = '\0';
852 int image_add_section(image_t *image, u32 base, u32 size, int flags, u8 *data)
854 image_section_t *section;
856 /* only image builder supports adding sections */
857 if (image->type != IMAGE_BUILDER)
858 return ERROR_INVALID_ARGUMENTS;
860 /* see if there's a previous section */
861 if (image->num_sections)
863 section = &image->sections[image->num_sections - 1];
865 /* see if it's enough to extend the last section,
866 * adding data to previous sections or merging is not supported */
867 if (((section->base_address + section->size) == base) && (section->flags == flags))
869 section->private = realloc(section->private, section->size + size);
870 memcpy((u8*)section->private + section->size, data, size);
871 section->size += size;
876 /* allocate new section */
877 image->num_sections++;
878 image->sections = realloc(image->sections, sizeof(image_section_t) * image->num_sections);
879 section = &image->sections[image->num_sections - 1];
880 section->base_address = base;
881 section->size = size;
882 section->flags = flags;
883 section->private = malloc(sizeof(u8) * size);
884 memcpy((u8*)section->private, data, size);
889 int image_close(image_t *image)
891 if (image->type == IMAGE_BINARY)
893 image_binary_t *image_binary = image->type_private;
895 fileio_close(&image_binary->fileio);
897 else if (image->type == IMAGE_IHEX)
899 image_ihex_t *image_ihex = image->type_private;
901 fileio_close(&image_ihex->fileio);
903 if (image_ihex->buffer)
904 free(image_ihex->buffer);
906 else if (image->type == IMAGE_ELF)
908 image_elf_t *image_elf = image->type_private;
910 fileio_close(&image_elf->fileio);
912 if (image_elf->header)
913 free(image_elf->header);
915 if (image_elf->segments)
916 free(image_elf->segments);
918 else if (image->type == IMAGE_MEMORY)
920 image_memory_t *image_memory = image->type_private;
922 if (image_memory->cache)
923 free(image_memory->cache);
925 else if (image->type == IMAGE_SRECORD)
927 image_mot_t *image_mot = image->type_private;
929 fileio_close(&image_mot->fileio);
931 if (image_mot->buffer)
932 free(image_mot->buffer);
934 else if (image->type == IMAGE_BUILDER)
938 for (i = 0; i < image->num_sections; i++)
940 free(image->sections[i].private);
944 if (image->type_private)
945 free(image->type_private);
948 free(image->sections);
953 static u32 crc32_table[256] = {0, 0};
955 int image_calculate_checksum(u8* buffer, u32 nbytes, u32* checksum)
957 u32 crc = 0xffffffff;
961 /* Initialize the CRC table and the decoding table. */
964 for (i = 0; i < 256; i++)
967 for (c = i << 24, j = 8; j > 0; --j)
968 c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1);
976 crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buffer++) & 255];