1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath <Dominic.Rath@gmx.de> *
3 * Copyright (C) 2007-2010 Øyvind Harboe <oyvind.harboe@zylin.com> *
4 * Copyright (C) 2008 by Spencer Oliver <spen@spen-soft.co.uk> *
5 * Copyright (C) 2009 Zachary T Welch <zw@superlucidity.net> *
6 * Copyright (C) 2010 by Antonio Borneo <borneo.antonio@gmail.com> *
7 * Copyright (C) 2017-2018 Tomas Vanek <vanekt@fbl.cz> *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
14 * This program is distributed in the hope that it will be useful, *
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
17 * GNU General Public License for more details. *
19 * You should have received a copy of the GNU General Public License *
20 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
21 ***************************************************************************/
26 #include <flash/common.h>
27 #include <flash/nor/core.h>
28 #include <flash/nor/imp.h>
29 #include <target/image.h>
33 * Upper level of NOR flash framework.
34 * The lower level interfaces are to drivers. These upper level ones
35 * primarily support access from Tcl scripts or from GDB.
38 static struct flash_bank *flash_banks;
40 int flash_driver_erase(struct flash_bank *bank, unsigned int first,
45 retval = bank->driver->erase(bank, first, last);
46 if (retval != ERROR_OK)
47 LOG_ERROR("failed erasing sectors %u to %u", first, last);
52 int flash_driver_protect(struct flash_bank *bank, int set, unsigned int first,
56 unsigned int num_blocks;
58 if (bank->num_prot_blocks)
59 num_blocks = bank->num_prot_blocks;
61 num_blocks = bank->num_sectors;
64 /* callers may not supply illegal parameters ... */
65 if (first > last || last >= num_blocks) {
66 LOG_ERROR("illegal protection block range");
70 /* force "set" to 0/1 */
73 if (bank->driver->protect == NULL) {
74 LOG_ERROR("Flash protection is not supported.");
75 return ERROR_FLASH_OPER_UNSUPPORTED;
80 * We must not use any cached information about protection state!!!!
82 * There are a million things that could change the protect state:
84 * the target could have reset, power cycled, been hot plugged,
85 * the application could have run, etc.
87 * Drivers only receive valid protection block range.
89 retval = bank->driver->protect(bank, set, first, last);
90 if (retval != ERROR_OK)
91 LOG_ERROR("failed setting protection for blocks %u to %u", first, last);
96 int flash_driver_write(struct flash_bank *bank,
97 uint8_t *buffer, uint32_t offset, uint32_t count)
101 retval = bank->driver->write(bank, buffer, offset, count);
102 if (retval != ERROR_OK) {
104 "error writing to flash at address " TARGET_ADDR_FMT
105 " at offset 0x%8.8" PRIx32,
113 int flash_driver_read(struct flash_bank *bank,
114 uint8_t *buffer, uint32_t offset, uint32_t count)
118 LOG_DEBUG("call flash_driver_read()");
120 retval = bank->driver->read(bank, buffer, offset, count);
121 if (retval != ERROR_OK) {
123 "error reading to flash at address " TARGET_ADDR_FMT
124 " at offset 0x%8.8" PRIx32,
132 int default_flash_read(struct flash_bank *bank,
133 uint8_t *buffer, uint32_t offset, uint32_t count)
135 return target_read_buffer(bank->target, offset + bank->base, count, buffer);
138 void flash_bank_add(struct flash_bank *bank)
140 /* put flash bank in linked list */
141 unsigned bank_num = 0;
143 /* find last flash bank */
144 struct flash_bank *p = flash_banks;
145 while (NULL != p->next) {
154 bank->bank_number = bank_num;
157 struct flash_bank *flash_bank_list(void)
162 struct flash_bank *get_flash_bank_by_num_noprobe(unsigned int num)
164 struct flash_bank *p;
167 for (p = flash_banks; p; p = p->next) {
171 LOG_ERROR("flash bank %d does not exist", num);
175 unsigned int flash_get_bank_count(void)
177 struct flash_bank *p;
179 for (p = flash_banks; p; p = p->next)
184 void default_flash_free_driver_priv(struct flash_bank *bank)
186 free(bank->driver_priv);
187 bank->driver_priv = NULL;
190 void flash_free_all_banks(void)
192 struct flash_bank *bank = flash_banks;
194 struct flash_bank *next = bank->next;
195 if (bank->driver->free_driver_priv)
196 bank->driver->free_driver_priv(bank);
198 LOG_WARNING("Flash driver of %s does not support free_driver_priv()", bank->name);
200 /* For 'virtual' flash driver bank->sectors and bank->prot_blocks pointers are copied from
201 * master flash_bank structure. They point to memory locations allocated by master flash driver
202 * so master driver is responsible for releasing them.
203 * Avoid UB caused by double-free memory corruption if flash bank is 'virtual'. */
205 if (strcmp(bank->driver->name, "virtual") != 0) {
207 free(bank->prot_blocks);
217 struct flash_bank *get_flash_bank_by_name_noprobe(const char *name)
219 unsigned requested = get_flash_name_index(name);
222 struct flash_bank *bank;
223 for (bank = flash_banks; NULL != bank; bank = bank->next) {
224 if (strcmp(bank->name, name) == 0)
226 if (!flash_driver_name_matches(bank->driver->name, name))
228 if (++found < requested)
235 int get_flash_bank_by_name(const char *name, struct flash_bank **bank_result)
237 struct flash_bank *bank;
240 bank = get_flash_bank_by_name_noprobe(name);
242 retval = bank->driver->auto_probe(bank);
244 if (retval != ERROR_OK) {
245 LOG_ERROR("auto_probe failed");
254 int get_flash_bank_by_num(unsigned int num, struct flash_bank **bank)
256 struct flash_bank *p = get_flash_bank_by_num_noprobe(num);
262 retval = p->driver->auto_probe(p);
264 if (retval != ERROR_OK) {
265 LOG_ERROR("auto_probe failed");
272 /* lookup flash bank by address, bank not found is success, but
273 * result_bank is set to NULL. */
274 int get_flash_bank_by_addr(struct target *target,
277 struct flash_bank **result_bank)
279 struct flash_bank *c;
281 /* cycle through bank list */
282 for (c = flash_banks; c; c = c->next) {
283 if (c->target != target)
287 retval = c->driver->auto_probe(c);
289 if (retval != ERROR_OK) {
290 LOG_ERROR("auto_probe failed");
293 /* check whether address belongs to this flash bank */
294 if ((addr >= c->base) && (addr <= c->base + (c->size - 1))) {
301 LOG_ERROR("No flash at address " TARGET_ADDR_FMT, addr);
307 static int default_flash_mem_blank_check(struct flash_bank *bank)
309 struct target *target = bank->target;
310 const int buffer_size = 1024;
312 int retval = ERROR_OK;
314 if (bank->target->state != TARGET_HALTED) {
315 LOG_ERROR("Target not halted");
316 return ERROR_TARGET_NOT_HALTED;
319 uint8_t *buffer = malloc(buffer_size);
321 for (unsigned int i = 0; i < bank->num_sectors; i++) {
323 bank->sectors[i].is_erased = 1;
325 for (j = 0; j < bank->sectors[i].size; j += buffer_size) {
328 if (chunk > (bank->sectors[i].size - j))
329 chunk = (bank->sectors[i].size - j);
331 retval = target_read_memory(target,
332 bank->base + bank->sectors[i].offset + j,
336 if (retval != ERROR_OK)
339 for (nBytes = 0; nBytes < chunk; nBytes++) {
340 if (buffer[nBytes] != bank->erased_value) {
341 bank->sectors[i].is_erased = 0;
354 int default_flash_blank_check(struct flash_bank *bank)
356 struct target *target = bank->target;
359 if (bank->target->state != TARGET_HALTED) {
360 LOG_ERROR("Target not halted");
361 return ERROR_TARGET_NOT_HALTED;
364 struct target_memory_check_block *block_array;
365 block_array = malloc(bank->num_sectors * sizeof(struct target_memory_check_block));
366 if (block_array == NULL)
367 return default_flash_mem_blank_check(bank);
369 for (unsigned int i = 0; i < bank->num_sectors; i++) {
370 block_array[i].address = bank->base + bank->sectors[i].offset;
371 block_array[i].size = bank->sectors[i].size;
372 block_array[i].result = UINT32_MAX; /* erase state unknown */
375 bool fast_check = true;
376 for (unsigned int i = 0; i < bank->num_sectors; ) {
377 retval = target_blank_check_memory(target,
378 block_array + i, bank->num_sectors - i,
381 /* Run slow fallback if the first run gives no result
382 * otherwise use possibly incomplete results */
387 i += retval; /* add number of blocks done this round */
391 for (unsigned int i = 0; i < bank->num_sectors; i++)
392 bank->sectors[i].is_erased = block_array[i].result;
395 LOG_USER("Running slow fallback erase check - add working memory");
396 retval = default_flash_mem_blank_check(bank);
403 /* Manipulate given flash region, selecting the bank according to target
404 * and address. Maps an address range to a set of sectors, and issues
405 * the callback() on that set ... e.g. to erase or unprotect its members.
407 * Parameter iterate_protect_blocks switches iteration of protect block
408 * instead of erase sectors. If there is no protect blocks array, sectors
409 * are used in iteration, so compatibility for old flash drivers is retained.
411 * The "pad_reason" parameter is a kind of boolean: when it's NULL, the
412 * range must fit those sectors exactly. This is clearly safe; it can't
413 * erase data which the caller said to leave alone, for example. If it's
414 * non-NULL, rather than failing, extra data in the first and/or last
415 * sectors will be added to the range, and that reason string is used when
416 * warning about those additions.
418 static int flash_iterate_address_range_inner(struct target *target,
419 char *pad_reason, target_addr_t addr, uint32_t length,
420 bool iterate_protect_blocks,
421 int (*callback)(struct flash_bank *bank, unsigned int first,
424 struct flash_bank *c;
425 struct flash_sector *block_array;
426 target_addr_t last_addr = addr + length - 1; /* the last address of range */
432 int retval = get_flash_bank_by_addr(target, addr, true, &c);
433 if (retval != ERROR_OK)
436 if (c->size == 0 || c->num_sectors == 0) {
437 LOG_ERROR("Bank is invalid");
438 return ERROR_FLASH_BANK_INVALID;
442 /* special case, erase whole bank when length is zero */
443 if (addr != c->base) {
444 LOG_ERROR("Whole bank access must start at beginning of bank.");
445 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
448 return callback(c, 0, c->num_sectors - 1);
451 /* check whether it all fits in this bank */
452 if (last_addr > c->base + c->size - 1) {
453 LOG_ERROR("Flash access does not fit into bank.");
454 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
457 if (c->prot_blocks == NULL || c->num_prot_blocks == 0) {
458 /* flash driver does not define protect blocks, use sectors instead */
459 iterate_protect_blocks = false;
462 if (iterate_protect_blocks) {
463 block_array = c->prot_blocks;
464 num_blocks = c->num_prot_blocks;
466 block_array = c->sectors;
467 num_blocks = c->num_sectors;
470 for (i = 0; i < num_blocks; i++) {
471 struct flash_sector *f = &block_array[i];
472 target_addr_t sector_addr = c->base + f->offset;
473 target_addr_t sector_last_addr = sector_addr + f->size - 1;
475 /* start only on a sector boundary */
477 /* scanned past the first sector? */
478 if (addr < sector_addr)
481 /* is this the first sector? */
482 if (addr == sector_addr)
485 /* Does this need head-padding? If so, pad and warn;
486 * or else force an error.
488 * Such padding can make trouble, since *WE* can't
489 * ever know if that data was in use. The warning
490 * should help users sort out messes later.
492 else if (addr <= sector_last_addr && pad_reason) {
493 /* FIXME say how many bytes (e.g. 80 KB) */
494 LOG_WARNING("Adding extra %s range, "
495 TARGET_ADDR_FMT " .. " TARGET_ADDR_FMT,
504 /* is this (also?) the last sector? */
505 if (last_addr == sector_last_addr) {
510 /* Does this need tail-padding? If so, pad and warn;
511 * or else force an error.
513 if (last_addr < sector_last_addr && pad_reason) {
514 /* FIXME say how many bytes (e.g. 80 KB) */
515 LOG_WARNING("Adding extra %s range, "
516 TARGET_ADDR_FMT " .. " TARGET_ADDR_FMT,
524 /* MUST finish on a sector boundary */
525 if (last_addr < sector_addr)
529 /* invalid start or end address? */
530 if (first == -1 || last == -1) {
531 LOG_ERROR("address range " TARGET_ADDR_FMT " .. " TARGET_ADDR_FMT
532 " is not sector-aligned",
535 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
538 /* The NOR driver may trim this range down, based on what
539 * sectors are already erased/unprotected. GDB currently
540 * blocks such optimizations.
542 return callback(c, first, last);
545 /* The inner fn only handles a single bank, we could be spanning
548 static int flash_iterate_address_range(struct target *target,
549 char *pad_reason, target_addr_t addr, uint32_t length,
550 bool iterate_protect_blocks,
551 int (*callback)(struct flash_bank *bank, unsigned int first,
554 struct flash_bank *c;
555 int retval = ERROR_OK;
557 /* Danger! zero-length iterations means entire bank! */
559 retval = get_flash_bank_by_addr(target, addr, true, &c);
560 if (retval != ERROR_OK)
563 uint32_t cur_length = length;
564 /* check whether it all fits in this bank */
565 if (addr + length - 1 > c->base + c->size - 1) {
566 LOG_DEBUG("iterating over more than one flash bank.");
567 cur_length = c->base + c->size - addr;
569 retval = flash_iterate_address_range_inner(target,
570 pad_reason, addr, cur_length,
571 iterate_protect_blocks,
573 if (retval != ERROR_OK)
576 length -= cur_length;
578 } while (length > 0);
583 int flash_erase_address_range(struct target *target,
584 bool pad, target_addr_t addr, uint32_t length)
586 return flash_iterate_address_range(target, pad ? "erase" : NULL,
587 addr, length, false, &flash_driver_erase);
590 static int flash_driver_unprotect(struct flash_bank *bank, unsigned int first,
593 return flash_driver_protect(bank, 0, first, last);
596 int flash_unlock_address_range(struct target *target, target_addr_t addr,
599 /* By default, pad to sector boundaries ... the real issue here
600 * is that our (only) caller *permanently* removes protection,
601 * and doesn't restore it.
603 return flash_iterate_address_range(target, "unprotect",
604 addr, length, true, &flash_driver_unprotect);
607 static int compare_section(const void *a, const void *b)
609 struct imagesection *b1, *b2;
610 b1 = *((struct imagesection **)a);
611 b2 = *((struct imagesection **)b);
613 if (b1->base_address == b2->base_address)
615 else if (b1->base_address > b2->base_address)
622 * Get aligned start address of a flash write region
624 target_addr_t flash_write_align_start(struct flash_bank *bank, target_addr_t addr)
626 if (addr < bank->base || addr >= bank->base + bank->size
627 || bank->write_start_alignment <= 1)
630 if (bank->write_start_alignment == FLASH_WRITE_ALIGN_SECTOR) {
631 uint32_t offset = addr - bank->base;
632 uint32_t aligned = 0;
633 for (unsigned int sect = 0; sect < bank->num_sectors; sect++) {
634 if (bank->sectors[sect].offset > offset)
637 aligned = bank->sectors[sect].offset;
639 return bank->base + aligned;
642 return addr & ~(bank->write_start_alignment - 1);
646 * Get aligned end address of a flash write region
648 target_addr_t flash_write_align_end(struct flash_bank *bank, target_addr_t addr)
650 if (addr < bank->base || addr >= bank->base + bank->size
651 || bank->write_end_alignment <= 1)
654 if (bank->write_end_alignment == FLASH_WRITE_ALIGN_SECTOR) {
655 uint32_t offset = addr - bank->base;
656 uint32_t aligned = 0;
657 for (unsigned int sect = 0; sect < bank->num_sectors; sect++) {
658 aligned = bank->sectors[sect].offset + bank->sectors[sect].size - 1;
659 if (aligned >= offset)
662 return bank->base + aligned;
665 return addr | (bank->write_end_alignment - 1);
669 * Check if gap between sections is bigger than minimum required to discontinue flash write
671 static bool flash_write_check_gap(struct flash_bank *bank,
672 target_addr_t addr1, target_addr_t addr2)
674 if (bank->minimal_write_gap == FLASH_WRITE_CONTINUOUS
675 || addr1 < bank->base || addr1 >= bank->base + bank->size
676 || addr2 < bank->base || addr2 >= bank->base + bank->size)
679 if (bank->minimal_write_gap == FLASH_WRITE_GAP_SECTOR) {
681 uint32_t offset1 = addr1 - bank->base;
682 /* find the sector following the one containing addr1 */
683 for (sect = 0; sect < bank->num_sectors; sect++) {
684 if (bank->sectors[sect].offset > offset1)
687 if (sect >= bank->num_sectors)
690 uint32_t offset2 = addr2 - bank->base;
691 return bank->sectors[sect].offset + bank->sectors[sect].size <= offset2;
694 target_addr_t aligned1 = flash_write_align_end(bank, addr1);
695 target_addr_t aligned2 = flash_write_align_start(bank, addr2);
696 return aligned1 + bank->minimal_write_gap < aligned2;
700 int flash_write_unlock(struct target *target, struct image *image,
701 uint32_t *written, bool erase, bool unlock)
703 int retval = ERROR_OK;
706 uint32_t section_offset;
707 struct flash_bank *c;
717 /* assume all sectors need erasing - stops any problems
718 * when flash_write is called multiple times */
723 /* allocate padding array */
724 padding = calloc(image->num_sections, sizeof(*padding));
726 /* This fn requires all sections to be in ascending order of addresses,
727 * whereas an image can have sections out of order. */
728 struct imagesection **sections = malloc(sizeof(struct imagesection *) *
729 image->num_sections);
731 for (i = 0; i < image->num_sections; i++)
732 sections[i] = &image->sections[i];
734 qsort(sections, image->num_sections, sizeof(struct imagesection *),
737 /* loop until we reach end of the image */
738 while (section < image->num_sections) {
742 target_addr_t run_address = sections[section]->base_address + section_offset;
743 uint32_t run_size = sections[section]->size - section_offset;
746 if (sections[section]->size == 0) {
747 LOG_WARNING("empty section %d", section);
753 /* find the corresponding flash bank */
754 retval = get_flash_bank_by_addr(target, run_address, false, &c);
755 if (retval != ERROR_OK)
758 LOG_WARNING("no flash bank found for address " TARGET_ADDR_FMT, run_address);
759 section++; /* and skip it */
764 /* collect consecutive sections which fall into the same bank */
765 section_last = section;
766 padding[section] = 0;
767 while ((run_address + run_size - 1 < c->base + c->size - 1) &&
768 (section_last + 1 < image->num_sections)) {
769 /* sections are sorted */
770 assert(sections[section_last + 1]->base_address >= c->base);
771 if (sections[section_last + 1]->base_address >= (c->base + c->size)) {
772 /* Done with this bank */
776 /* if we have multiple sections within our image,
777 * flash programming could fail due to alignment issues
778 * attempt to rebuild a consecutive buffer for the flash loader */
779 target_addr_t run_next_addr = run_address + run_size;
780 target_addr_t next_section_base = sections[section_last + 1]->base_address;
781 if (next_section_base < run_next_addr) {
782 LOG_ERROR("Section at " TARGET_ADDR_FMT
783 " overlaps section ending at " TARGET_ADDR_FMT,
784 next_section_base, run_next_addr);
785 LOG_ERROR("Flash write aborted.");
790 pad_bytes = next_section_base - run_next_addr;
792 if (flash_write_check_gap(c, run_next_addr - 1, next_section_base)) {
793 LOG_INFO("Flash write discontinued at " TARGET_ADDR_FMT
794 ", next section at " TARGET_ADDR_FMT,
795 run_next_addr, next_section_base);
800 LOG_INFO("Padding image section %d at " TARGET_ADDR_FMT
802 section_last, run_next_addr, pad_bytes);
804 padding[section_last] = pad_bytes;
805 run_size += pad_bytes;
806 run_size += sections[++section_last]->size;
809 if (run_address + run_size - 1 > c->base + c->size - 1) {
810 /* If we have more than one flash chip back to back, then we limit
811 * the current write operation to the current chip.
813 LOG_DEBUG("Truncate flash run size to the current flash chip.");
815 run_size = c->base + c->size - run_address;
816 assert(run_size > 0);
819 uint32_t padding_at_start = 0;
820 if (c->write_start_alignment || c->write_end_alignment) {
821 /* align write region according to bank requirements */
822 target_addr_t aligned_start = flash_write_align_start(c, run_address);
823 padding_at_start = run_address - aligned_start;
824 if (padding_at_start > 0) {
825 LOG_WARNING("Section start address " TARGET_ADDR_FMT
826 " breaks the required alignment of flash bank %s",
827 run_address, c->name);
828 LOG_WARNING("Padding %d bytes from " TARGET_ADDR_FMT,
829 padding_at_start, aligned_start);
831 run_address -= padding_at_start;
832 run_size += padding_at_start;
835 target_addr_t run_end = run_address + run_size - 1;
836 target_addr_t aligned_end = flash_write_align_end(c, run_end);
837 pad_bytes = aligned_end - run_end;
839 LOG_INFO("Padding image section %d at " TARGET_ADDR_FMT
840 " with %d bytes (bank write end alignment)",
841 section_last, run_end + 1, pad_bytes);
843 padding[section_last] += pad_bytes;
844 run_size += pad_bytes;
847 } else if (unlock || erase) {
848 /* If we're applying any sector automagic, then pad this
849 * (maybe-combined) segment to the end of its last sector.
851 uint32_t offset_start = run_address - c->base;
852 uint32_t offset_end = offset_start + run_size;
853 uint32_t end = offset_end, delta;
855 for (unsigned int sector = 0; sector < c->num_sectors; sector++) {
856 end = c->sectors[sector].offset
857 + c->sectors[sector].size;
858 if (offset_end <= end)
862 delta = end - offset_end;
863 padding[section_last] += delta;
867 /* allocate buffer */
868 buffer = malloc(run_size);
869 if (buffer == NULL) {
870 LOG_ERROR("Out of memory for flash bank buffer");
875 if (padding_at_start)
876 memset(buffer, c->default_padded_value, padding_at_start);
878 buffer_idx = padding_at_start;
880 /* read sections to the buffer */
881 while (buffer_idx < run_size) {
884 size_read = run_size - buffer_idx;
885 if (size_read > sections[section]->size - section_offset)
886 size_read = sections[section]->size - section_offset;
890 * #¤%#"%¤% we have to figure out the section # from the sorted
891 * list of pointers to sections to invoke image_read_section()...
893 intptr_t diff = (intptr_t)sections[section] - (intptr_t)image->sections;
894 int t_section_num = diff / sizeof(struct imagesection);
896 LOG_DEBUG("image_read_section: section = %d, t_section_num = %d, "
897 "section_offset = %"PRIu32", buffer_idx = %"PRIu32", size_read = %zu",
898 section, t_section_num, section_offset,
899 buffer_idx, size_read);
900 retval = image_read_section(image, t_section_num, section_offset,
901 size_read, buffer + buffer_idx, &size_read);
902 if (retval != ERROR_OK || size_read == 0) {
907 buffer_idx += size_read;
908 section_offset += size_read;
910 /* see if we need to pad the section */
911 if (padding[section]) {
912 memset(buffer + buffer_idx, c->default_padded_value, padding[section]);
913 buffer_idx += padding[section];
916 if (section_offset >= sections[section]->size) {
925 retval = flash_unlock_address_range(target, run_address, run_size);
926 if (retval == ERROR_OK) {
928 /* calculate and erase sectors */
929 retval = flash_erase_address_range(target,
930 true, run_address, run_size);
934 if (retval == ERROR_OK) {
935 /* write flash sectors */
936 retval = flash_driver_write(c, buffer, run_address - c->base, run_size);
941 if (retval != ERROR_OK) {
942 /* abort operation */
947 *written += run_size; /* add run size to total written counter */
957 int flash_write(struct target *target, struct image *image,
958 uint32_t *written, bool erase)
960 return flash_write_unlock(target, image, written, erase, false);
963 struct flash_sector *alloc_block_array(uint32_t offset, uint32_t size,
964 unsigned int num_blocks)
966 struct flash_sector *array = calloc(num_blocks, sizeof(struct flash_sector));
970 for (unsigned int i = 0; i < num_blocks; i++) {
971 array[i].offset = offset;
972 array[i].size = size;
973 array[i].is_erased = -1;
974 array[i].is_protected = -1;