/***************************************************************************
+ * Copyright (C) 2005 by Dominic Rath <Dominic.Rath@gmx.de> *
+ * Copyright (C) 2007-2010 Øyvind Harboe <oyvind.harboe@zylin.com> *
+ * Copyright (C) 2008 by Spencer Oliver <spen@spen-soft.co.uk> *
* Copyright (C) 2009 Zachary T Welch <zw@superlucidity.net> *
+ * Copyright (C) 2010 by Antonio Borneo <borneo.antonio@gmail.com> *
+ * Copyright (C) 2017-2018 Tomas Vanek <vanekt@fbl.cz> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
-#include <flash/flash.h>
+#include <flash/common.h>
+#include <flash/nor/core.h>
#include <flash/nor/imp.h>
+#include <target/image.h>
-// in flash.c, to be moved here
-extern struct flash_driver *flash_drivers[];
-extern struct flash_bank *flash_banks;
+/**
+ * @file
+ * Upper level of NOR flash framework.
+ * The lower level interfaces are to drivers. These upper level ones
+ * primarily support access from Tcl scripts or from GDB.
+ */
-struct flash_driver *flash_driver_find_by_name(const char *name)
+static struct flash_bank *flash_banks;
+
+int flash_driver_erase(struct flash_bank *bank, unsigned int first,
+ unsigned int last)
{
- for (unsigned i = 0; flash_drivers[i]; i++)
- {
- if (strcmp(name, flash_drivers[i]->name) == 0)
- return flash_drivers[i];
+ int retval;
+
+ retval = bank->driver->erase(bank, first, last);
+ if (retval != ERROR_OK)
+ LOG_ERROR("failed erasing sectors %u to %u", first, last);
+
+ return retval;
+}
+
+int flash_driver_protect(struct flash_bank *bank, int set, unsigned int first,
+ unsigned int last)
+{
+ int retval;
+ unsigned int num_blocks;
+
+ if (bank->num_prot_blocks)
+ num_blocks = bank->num_prot_blocks;
+ else
+ num_blocks = bank->num_sectors;
+
+
+ /* callers may not supply illegal parameters ... */
+ if (first > last || last >= num_blocks) {
+ LOG_ERROR("illegal protection block range");
+ return ERROR_FAIL;
}
- return NULL;
+
+ /* force "set" to 0/1 */
+ set = !!set;
+
+ if (bank->driver->protect == NULL) {
+ LOG_ERROR("Flash protection is not supported.");
+ return ERROR_FLASH_OPER_UNSUPPORTED;
+ }
+
+ /* DANGER!
+ *
+ * We must not use any cached information about protection state!!!!
+ *
+ * There are a million things that could change the protect state:
+ *
+ * the target could have reset, power cycled, been hot plugged,
+ * the application could have run, etc.
+ *
+ * Drivers only receive valid protection block range.
+ */
+ retval = bank->driver->protect(bank, set, first, last);
+ if (retval != ERROR_OK)
+ LOG_ERROR("failed setting protection for blocks %u to %u", first, last);
+
+ return retval;
+}
+
+int flash_driver_write(struct flash_bank *bank,
+ const uint8_t *buffer, uint32_t offset, uint32_t count)
+{
+ int retval;
+
+ retval = bank->driver->write(bank, buffer, offset, count);
+ if (retval != ERROR_OK) {
+ LOG_ERROR(
+ "error writing to flash at address " TARGET_ADDR_FMT
+ " at offset 0x%8.8" PRIx32,
+ bank->base,
+ offset);
+ }
+
+ return retval;
+}
+
+int flash_driver_read(struct flash_bank *bank,
+ uint8_t *buffer, uint32_t offset, uint32_t count)
+{
+ int retval;
+
+ LOG_DEBUG("call flash_driver_read()");
+
+ retval = bank->driver->read(bank, buffer, offset, count);
+ if (retval != ERROR_OK) {
+ LOG_ERROR(
+ "error reading to flash at address " TARGET_ADDR_FMT
+ " at offset 0x%8.8" PRIx32,
+ bank->base,
+ offset);
+ }
+
+ return retval;
+}
+
+int default_flash_read(struct flash_bank *bank,
+ uint8_t *buffer, uint32_t offset, uint32_t count)
+{
+ return target_read_buffer(bank->target, offset + bank->base, count, buffer);
+}
+
+int flash_driver_verify(struct flash_bank *bank,
+ const uint8_t *buffer, uint32_t offset, uint32_t count)
+{
+ int retval;
+
+ retval = bank->driver->verify ? bank->driver->verify(bank, buffer, offset, count) :
+ default_flash_verify(bank, buffer, offset, count);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("verify failed in bank at " TARGET_ADDR_FMT " starting at 0x%8.8" PRIx32,
+ bank->base, offset);
+ }
+
+ return retval;
+}
+
+int default_flash_verify(struct flash_bank *bank,
+ const uint8_t *buffer, uint32_t offset, uint32_t count)
+{
+ uint32_t target_crc, image_crc;
+ int retval;
+
+ retval = image_calculate_checksum(buffer, count, &image_crc);
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = target_checksum_memory(bank->target, offset + bank->base, count, &target_crc);
+ if (retval != ERROR_OK)
+ return retval;
+
+ LOG_DEBUG("addr " TARGET_ADDR_FMT ", len 0x%08" PRIx32 ", crc 0x%08" PRIx32 " 0x%08" PRIx32,
+ offset + bank->base, count, ~image_crc, ~target_crc);
+ if (target_crc == image_crc)
+ return ERROR_OK;
+ else
+ return ERROR_FAIL;
}
void flash_bank_add(struct flash_bank *bank)
{
/* put flash bank in linked list */
unsigned bank_num = 0;
- if (flash_banks)
- {
+ if (flash_banks) {
/* find last flash bank */
struct flash_bank *p = flash_banks;
- while (NULL != p->next)
- {
+ while (NULL != p->next) {
bank_num += 1;
p = p->next;
}
p->next = bank;
bank_num += 1;
- }
- else
+ } else
flash_banks = bank;
bank->bank_number = bank_num;
{
return flash_banks;
}
+
+struct flash_bank *get_flash_bank_by_num_noprobe(unsigned int num)
+{
+ struct flash_bank *p;
+ unsigned int i = 0;
+
+ for (p = flash_banks; p; p = p->next) {
+ if (i++ == num)
+ return p;
+ }
+ LOG_ERROR("flash bank %d does not exist", num);
+ return NULL;
+}
+
+unsigned int flash_get_bank_count(void)
+{
+ struct flash_bank *p;
+ unsigned int i = 0;
+ for (p = flash_banks; p; p = p->next)
+ i++;
+ return i;
+}
+
+void default_flash_free_driver_priv(struct flash_bank *bank)
+{
+ free(bank->driver_priv);
+ bank->driver_priv = NULL;
+}
+
+void flash_free_all_banks(void)
+{
+ struct flash_bank *bank = flash_banks;
+ while (bank) {
+ struct flash_bank *next = bank->next;
+ if (bank->driver->free_driver_priv)
+ bank->driver->free_driver_priv(bank);
+ else
+ LOG_WARNING("Flash driver of %s does not support free_driver_priv()", bank->name);
+
+ /* For 'virtual' flash driver bank->sectors and bank->prot_blocks pointers are copied from
+ * master flash_bank structure. They point to memory locations allocated by master flash driver
+ * so master driver is responsible for releasing them.
+ * Avoid UB caused by double-free memory corruption if flash bank is 'virtual'. */
+
+ if (strcmp(bank->driver->name, "virtual") != 0) {
+ free(bank->sectors);
+ free(bank->prot_blocks);
+ }
+
+ free(bank->name);
+ free(bank);
+ bank = next;
+ }
+ flash_banks = NULL;
+}
+
+struct flash_bank *get_flash_bank_by_name_noprobe(const char *name)
+{
+ unsigned requested = get_flash_name_index(name);
+ unsigned found = 0;
+
+ struct flash_bank *bank;
+ for (bank = flash_banks; NULL != bank; bank = bank->next) {
+ if (strcmp(bank->name, name) == 0)
+ return bank;
+ if (!flash_driver_name_matches(bank->driver->name, name))
+ continue;
+ if (++found < requested)
+ continue;
+ return bank;
+ }
+ return NULL;
+}
+
+int get_flash_bank_by_name(const char *name, struct flash_bank **bank_result)
+{
+ struct flash_bank *bank;
+ int retval;
+
+ bank = get_flash_bank_by_name_noprobe(name);
+ if (bank != NULL) {
+ retval = bank->driver->auto_probe(bank);
+
+ if (retval != ERROR_OK) {
+ LOG_ERROR("auto_probe failed");
+ return retval;
+ }
+ }
+
+ *bank_result = bank;
+ return ERROR_OK;
+}
+
+int get_flash_bank_by_num(unsigned int num, struct flash_bank **bank)
+{
+ struct flash_bank *p = get_flash_bank_by_num_noprobe(num);
+ int retval;
+
+ if (p == NULL)
+ return ERROR_FAIL;
+
+ retval = p->driver->auto_probe(p);
+
+ if (retval != ERROR_OK) {
+ LOG_ERROR("auto_probe failed");
+ return retval;
+ }
+ *bank = p;
+ return ERROR_OK;
+}
+
+/* lookup flash bank by address, bank not found is success, but
+ * result_bank is set to NULL. */
+int get_flash_bank_by_addr(struct target *target,
+ target_addr_t addr,
+ bool check,
+ struct flash_bank **result_bank)
+{
+ struct flash_bank *c;
+
+ /* cycle through bank list */
+ for (c = flash_banks; c; c = c->next) {
+ if (c->target != target)
+ continue;
+
+ int retval;
+ retval = c->driver->auto_probe(c);
+
+ if (retval != ERROR_OK) {
+ LOG_ERROR("auto_probe failed");
+ return retval;
+ }
+ /* check whether address belongs to this flash bank */
+ if ((addr >= c->base) && (addr <= c->base + (c->size - 1))) {
+ *result_bank = c;
+ return ERROR_OK;
+ }
+ }
+ *result_bank = NULL;
+ if (check) {
+ LOG_ERROR("No flash at address " TARGET_ADDR_FMT, addr);
+ return ERROR_FAIL;
+ }
+ return ERROR_OK;
+}
+
+static int default_flash_mem_blank_check(struct flash_bank *bank)
+{
+ struct target *target = bank->target;
+ const int buffer_size = 1024;
+ uint32_t nBytes;
+ int retval = ERROR_OK;
+
+ if (bank->target->state != TARGET_HALTED) {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ uint8_t *buffer = malloc(buffer_size);
+
+ for (unsigned int i = 0; i < bank->num_sectors; i++) {
+ uint32_t j;
+ bank->sectors[i].is_erased = 1;
+
+ for (j = 0; j < bank->sectors[i].size; j += buffer_size) {
+ uint32_t chunk;
+ chunk = buffer_size;
+ if (chunk > (bank->sectors[i].size - j))
+ chunk = (bank->sectors[i].size - j);
+
+ retval = target_read_memory(target,
+ bank->base + bank->sectors[i].offset + j,
+ 4,
+ chunk/4,
+ buffer);
+ if (retval != ERROR_OK)
+ goto done;
+
+ for (nBytes = 0; nBytes < chunk; nBytes++) {
+ if (buffer[nBytes] != bank->erased_value) {
+ bank->sectors[i].is_erased = 0;
+ break;
+ }
+ }
+ }
+ }
+
+done:
+ free(buffer);
+
+ return retval;
+}
+
+int default_flash_blank_check(struct flash_bank *bank)
+{
+ struct target *target = bank->target;
+ int retval;
+
+ if (bank->target->state != TARGET_HALTED) {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ struct target_memory_check_block *block_array;
+ block_array = malloc(bank->num_sectors * sizeof(struct target_memory_check_block));
+ if (block_array == NULL)
+ return default_flash_mem_blank_check(bank);
+
+ for (unsigned int i = 0; i < bank->num_sectors; i++) {
+ block_array[i].address = bank->base + bank->sectors[i].offset;
+ block_array[i].size = bank->sectors[i].size;
+ block_array[i].result = UINT32_MAX; /* erase state unknown */
+ }
+
+ bool fast_check = true;
+ for (unsigned int i = 0; i < bank->num_sectors; ) {
+ retval = target_blank_check_memory(target,
+ block_array + i, bank->num_sectors - i,
+ bank->erased_value);
+ if (retval < 1) {
+ /* Run slow fallback if the first run gives no result
+ * otherwise use possibly incomplete results */
+ if (i == 0)
+ fast_check = false;
+ break;
+ }
+ i += retval; /* add number of blocks done this round */
+ }
+
+ if (fast_check) {
+ for (unsigned int i = 0; i < bank->num_sectors; i++)
+ bank->sectors[i].is_erased = block_array[i].result;
+ retval = ERROR_OK;
+ } else {
+ LOG_USER("Running slow fallback erase check - add working memory");
+ retval = default_flash_mem_blank_check(bank);
+ }
+ free(block_array);
+
+ return retval;
+}
+
+/* Manipulate given flash region, selecting the bank according to target
+ * and address. Maps an address range to a set of sectors, and issues
+ * the callback() on that set ... e.g. to erase or unprotect its members.
+ *
+ * Parameter iterate_protect_blocks switches iteration of protect block
+ * instead of erase sectors. If there is no protect blocks array, sectors
+ * are used in iteration, so compatibility for old flash drivers is retained.
+ *
+ * The "pad_reason" parameter is a kind of boolean: when it's NULL, the
+ * range must fit those sectors exactly. This is clearly safe; it can't
+ * erase data which the caller said to leave alone, for example. If it's
+ * non-NULL, rather than failing, extra data in the first and/or last
+ * sectors will be added to the range, and that reason string is used when
+ * warning about those additions.
+ */
+static int flash_iterate_address_range_inner(struct target *target,
+ char *pad_reason, target_addr_t addr, uint32_t length,
+ bool iterate_protect_blocks,
+ int (*callback)(struct flash_bank *bank, unsigned int first,
+ unsigned int last))
+{
+ struct flash_bank *c;
+ struct flash_sector *block_array;
+ target_addr_t last_addr = addr + length - 1; /* the last address of range */
+ int first = -1;
+ int last = -1;
+ int i;
+ int num_blocks;
+
+ int retval = get_flash_bank_by_addr(target, addr, true, &c);
+ if (retval != ERROR_OK)
+ return retval;
+
+ if (c->size == 0 || c->num_sectors == 0) {
+ LOG_ERROR("Bank is invalid");
+ return ERROR_FLASH_BANK_INVALID;
+ }
+
+ if (length == 0) {
+ /* special case, erase whole bank when length is zero */
+ if (addr != c->base) {
+ LOG_ERROR("Whole bank access must start at beginning of bank.");
+ return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
+ }
+
+ return callback(c, 0, c->num_sectors - 1);
+ }
+
+ /* check whether it all fits in this bank */
+ if (last_addr > c->base + c->size - 1) {
+ LOG_ERROR("Flash access does not fit into bank.");
+ return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
+ }
+
+ if (c->prot_blocks == NULL || c->num_prot_blocks == 0) {
+ /* flash driver does not define protect blocks, use sectors instead */
+ iterate_protect_blocks = false;
+ }
+
+ if (iterate_protect_blocks) {
+ block_array = c->prot_blocks;
+ num_blocks = c->num_prot_blocks;
+ } else {
+ block_array = c->sectors;
+ num_blocks = c->num_sectors;
+ }
+
+ for (i = 0; i < num_blocks; i++) {
+ struct flash_sector *f = &block_array[i];
+ target_addr_t sector_addr = c->base + f->offset;
+ target_addr_t sector_last_addr = sector_addr + f->size - 1;
+
+ /* start only on a sector boundary */
+ if (first < 0) {
+ /* scanned past the first sector? */
+ if (addr < sector_addr)
+ break;
+
+ /* is this the first sector? */
+ if (addr == sector_addr)
+ first = i;
+
+ /* Does this need head-padding? If so, pad and warn;
+ * or else force an error.
+ *
+ * Such padding can make trouble, since *WE* can't
+ * ever know if that data was in use. The warning
+ * should help users sort out messes later.
+ */
+ else if (addr <= sector_last_addr && pad_reason) {
+ /* FIXME say how many bytes (e.g. 80 KB) */
+ LOG_WARNING("Adding extra %s range, "
+ TARGET_ADDR_FMT " .. " TARGET_ADDR_FMT,
+ pad_reason,
+ sector_addr,
+ addr - 1);
+ first = i;
+ } else
+ continue;
+ }
+
+ /* is this (also?) the last sector? */
+ if (last_addr == sector_last_addr) {
+ last = i;
+ break;
+ }
+
+ /* Does this need tail-padding? If so, pad and warn;
+ * or else force an error.
+ */
+ if (last_addr < sector_last_addr && pad_reason) {
+ /* FIXME say how many bytes (e.g. 80 KB) */
+ LOG_WARNING("Adding extra %s range, "
+ TARGET_ADDR_FMT " .. " TARGET_ADDR_FMT,
+ pad_reason,
+ last_addr + 1,
+ sector_last_addr);
+ last = i;
+ break;
+ }
+
+ /* MUST finish on a sector boundary */
+ if (last_addr < sector_addr)
+ break;
+ }
+
+ /* invalid start or end address? */
+ if (first == -1 || last == -1) {
+ LOG_ERROR("address range " TARGET_ADDR_FMT " .. " TARGET_ADDR_FMT
+ " is not sector-aligned",
+ addr,
+ last_addr);
+ return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
+ }
+
+ /* The NOR driver may trim this range down, based on what
+ * sectors are already erased/unprotected. GDB currently
+ * blocks such optimizations.
+ */
+ return callback(c, first, last);
+}
+
+/* The inner fn only handles a single bank, we could be spanning
+ * multiple chips.
+ */
+static int flash_iterate_address_range(struct target *target,
+ char *pad_reason, target_addr_t addr, uint32_t length,
+ bool iterate_protect_blocks,
+ int (*callback)(struct flash_bank *bank, unsigned int first,
+ unsigned int last))
+{
+ struct flash_bank *c;
+ int retval = ERROR_OK;
+
+ /* Danger! zero-length iterations means entire bank! */
+ do {
+ retval = get_flash_bank_by_addr(target, addr, true, &c);
+ if (retval != ERROR_OK)
+ return retval;
+
+ uint32_t cur_length = length;
+ /* check whether it all fits in this bank */
+ if (addr + length - 1 > c->base + c->size - 1) {
+ LOG_DEBUG("iterating over more than one flash bank.");
+ cur_length = c->base + c->size - addr;
+ }
+ retval = flash_iterate_address_range_inner(target,
+ pad_reason, addr, cur_length,
+ iterate_protect_blocks,
+ callback);
+ if (retval != ERROR_OK)
+ break;
+
+ length -= cur_length;
+ addr += cur_length;
+ } while (length > 0);
+
+ return retval;
+}
+
+int flash_erase_address_range(struct target *target,
+ bool pad, target_addr_t addr, uint32_t length)
+{
+ return flash_iterate_address_range(target, pad ? "erase" : NULL,
+ addr, length, false, &flash_driver_erase);
+}
+
+static int flash_driver_unprotect(struct flash_bank *bank, unsigned int first,
+ unsigned int last)
+{
+ return flash_driver_protect(bank, 0, first, last);
+}
+
+int flash_unlock_address_range(struct target *target, target_addr_t addr,
+ uint32_t length)
+{
+ /* By default, pad to sector boundaries ... the real issue here
+ * is that our (only) caller *permanently* removes protection,
+ * and doesn't restore it.
+ */
+ return flash_iterate_address_range(target, "unprotect",
+ addr, length, true, &flash_driver_unprotect);
+}
+
+static int compare_section(const void *a, const void *b)
+{
+ struct imagesection *b1, *b2;
+ b1 = *((struct imagesection **)a);
+ b2 = *((struct imagesection **)b);
+
+ if (b1->base_address == b2->base_address)
+ return 0;
+ else if (b1->base_address > b2->base_address)
+ return 1;
+ else
+ return -1;
+}
+
+/**
+ * Get aligned start address of a flash write region
+ */
+target_addr_t flash_write_align_start(struct flash_bank *bank, target_addr_t addr)
+{
+ if (addr < bank->base || addr >= bank->base + bank->size
+ || bank->write_start_alignment <= 1)
+ return addr;
+
+ if (bank->write_start_alignment == FLASH_WRITE_ALIGN_SECTOR) {
+ uint32_t offset = addr - bank->base;
+ uint32_t aligned = 0;
+ for (unsigned int sect = 0; sect < bank->num_sectors; sect++) {
+ if (bank->sectors[sect].offset > offset)
+ break;
+
+ aligned = bank->sectors[sect].offset;
+ }
+ return bank->base + aligned;
+ }
+
+ return addr & ~(bank->write_start_alignment - 1);
+}
+
+/**
+ * Get aligned end address of a flash write region
+ */
+target_addr_t flash_write_align_end(struct flash_bank *bank, target_addr_t addr)
+{
+ if (addr < bank->base || addr >= bank->base + bank->size
+ || bank->write_end_alignment <= 1)
+ return addr;
+
+ if (bank->write_end_alignment == FLASH_WRITE_ALIGN_SECTOR) {
+ uint32_t offset = addr - bank->base;
+ uint32_t aligned = 0;
+ for (unsigned int sect = 0; sect < bank->num_sectors; sect++) {
+ aligned = bank->sectors[sect].offset + bank->sectors[sect].size - 1;
+ if (aligned >= offset)
+ break;
+ }
+ return bank->base + aligned;
+ }
+
+ return addr | (bank->write_end_alignment - 1);
+}
+
+/**
+ * Check if gap between sections is bigger than minimum required to discontinue flash write
+ */
+static bool flash_write_check_gap(struct flash_bank *bank,
+ target_addr_t addr1, target_addr_t addr2)
+{
+ if (bank->minimal_write_gap == FLASH_WRITE_CONTINUOUS
+ || addr1 < bank->base || addr1 >= bank->base + bank->size
+ || addr2 < bank->base || addr2 >= bank->base + bank->size)
+ return false;
+
+ if (bank->minimal_write_gap == FLASH_WRITE_GAP_SECTOR) {
+ unsigned int sect;
+ uint32_t offset1 = addr1 - bank->base;
+ /* find the sector following the one containing addr1 */
+ for (sect = 0; sect < bank->num_sectors; sect++) {
+ if (bank->sectors[sect].offset > offset1)
+ break;
+ }
+ if (sect >= bank->num_sectors)
+ return false;
+
+ uint32_t offset2 = addr2 - bank->base;
+ return bank->sectors[sect].offset + bank->sectors[sect].size <= offset2;
+ }
+
+ target_addr_t aligned1 = flash_write_align_end(bank, addr1);
+ target_addr_t aligned2 = flash_write_align_start(bank, addr2);
+ return aligned1 + bank->minimal_write_gap < aligned2;
+}
+
+
+int flash_write_unlock_verify(struct target *target, struct image *image,
+ uint32_t *written, bool erase, bool unlock, bool write, bool verify)
+{
+ int retval = ERROR_OK;
+
+ unsigned int section;
+ uint32_t section_offset;
+ struct flash_bank *c;
+ int *padding;
+
+ section = 0;
+ section_offset = 0;
+
+ if (written)
+ *written = 0;
+
+ if (erase) {
+ /* assume all sectors need erasing - stops any problems
+ * when flash_write is called multiple times */
+
+ flash_set_dirty();
+ }
+
+ /* allocate padding array */
+ padding = calloc(image->num_sections, sizeof(*padding));
+
+ /* This fn requires all sections to be in ascending order of addresses,
+ * whereas an image can have sections out of order. */
+ struct imagesection **sections = malloc(sizeof(struct imagesection *) *
+ image->num_sections);
+
+ for (unsigned int i = 0; i < image->num_sections; i++)
+ sections[i] = &image->sections[i];
+
+ qsort(sections, image->num_sections, sizeof(struct imagesection *),
+ compare_section);
+
+ /* loop until we reach end of the image */
+ while (section < image->num_sections) {
+ uint32_t buffer_idx;
+ uint8_t *buffer;
+ unsigned int section_last;
+ target_addr_t run_address = sections[section]->base_address + section_offset;
+ uint32_t run_size = sections[section]->size - section_offset;
+ int pad_bytes = 0;
+
+ if (sections[section]->size == 0) {
+ LOG_WARNING("empty section %d", section);
+ section++;
+ section_offset = 0;
+ continue;
+ }
+
+ /* find the corresponding flash bank */
+ retval = get_flash_bank_by_addr(target, run_address, false, &c);
+ if (retval != ERROR_OK)
+ goto done;
+ if (c == NULL) {
+ LOG_WARNING("no flash bank found for address " TARGET_ADDR_FMT, run_address);
+ section++; /* and skip it */
+ section_offset = 0;
+ continue;
+ }
+
+ /* collect consecutive sections which fall into the same bank */
+ section_last = section;
+ padding[section] = 0;
+ while ((run_address + run_size - 1 < c->base + c->size - 1) &&
+ (section_last + 1 < image->num_sections)) {
+ /* sections are sorted */
+ assert(sections[section_last + 1]->base_address >= c->base);
+ if (sections[section_last + 1]->base_address >= (c->base + c->size)) {
+ /* Done with this bank */
+ break;
+ }
+
+ /* if we have multiple sections within our image,
+ * flash programming could fail due to alignment issues
+ * attempt to rebuild a consecutive buffer for the flash loader */
+ target_addr_t run_next_addr = run_address + run_size;
+ target_addr_t next_section_base = sections[section_last + 1]->base_address;
+ if (next_section_base < run_next_addr) {
+ LOG_ERROR("Section at " TARGET_ADDR_FMT
+ " overlaps section ending at " TARGET_ADDR_FMT,
+ next_section_base, run_next_addr);
+ LOG_ERROR("Flash write aborted.");
+ retval = ERROR_FAIL;
+ goto done;
+ }
+
+ pad_bytes = next_section_base - run_next_addr;
+ if (pad_bytes) {
+ if (flash_write_check_gap(c, run_next_addr - 1, next_section_base)) {
+ LOG_INFO("Flash write discontinued at " TARGET_ADDR_FMT
+ ", next section at " TARGET_ADDR_FMT,
+ run_next_addr, next_section_base);
+ break;
+ }
+ }
+ if (pad_bytes > 0)
+ LOG_INFO("Padding image section %d at " TARGET_ADDR_FMT
+ " with %d bytes",
+ section_last, run_next_addr, pad_bytes);
+
+ padding[section_last] = pad_bytes;
+ run_size += pad_bytes;
+ run_size += sections[++section_last]->size;
+ }
+
+ if (run_address + run_size - 1 > c->base + c->size - 1) {
+ /* If we have more than one flash chip back to back, then we limit
+ * the current write operation to the current chip.
+ */
+ LOG_DEBUG("Truncate flash run size to the current flash chip.");
+
+ run_size = c->base + c->size - run_address;
+ assert(run_size > 0);
+ }
+
+ uint32_t padding_at_start = 0;
+ if (c->write_start_alignment || c->write_end_alignment) {
+ /* align write region according to bank requirements */
+ target_addr_t aligned_start = flash_write_align_start(c, run_address);
+ padding_at_start = run_address - aligned_start;
+ if (padding_at_start > 0) {
+ LOG_WARNING("Section start address " TARGET_ADDR_FMT
+ " breaks the required alignment of flash bank %s",
+ run_address, c->name);
+ LOG_WARNING("Padding %" PRIu32 " bytes from " TARGET_ADDR_FMT,
+ padding_at_start, aligned_start);
+
+ run_address -= padding_at_start;
+ run_size += padding_at_start;
+ }
+
+ target_addr_t run_end = run_address + run_size - 1;
+ target_addr_t aligned_end = flash_write_align_end(c, run_end);
+ pad_bytes = aligned_end - run_end;
+ if (pad_bytes > 0) {
+ LOG_INFO("Padding image section %d at " TARGET_ADDR_FMT
+ " with %d bytes (bank write end alignment)",
+ section_last, run_end + 1, pad_bytes);
+
+ padding[section_last] += pad_bytes;
+ run_size += pad_bytes;
+ }
+
+ } else if (unlock || erase) {
+ /* If we're applying any sector automagic, then pad this
+ * (maybe-combined) segment to the end of its last sector.
+ */
+ uint32_t offset_start = run_address - c->base;
+ uint32_t offset_end = offset_start + run_size;
+ uint32_t end = offset_end, delta;
+
+ for (unsigned int sector = 0; sector < c->num_sectors; sector++) {
+ end = c->sectors[sector].offset
+ + c->sectors[sector].size;
+ if (offset_end <= end)
+ break;
+ }
+
+ delta = end - offset_end;
+ padding[section_last] += delta;
+ run_size += delta;
+ }
+
+ /* allocate buffer */
+ buffer = malloc(run_size);
+ if (buffer == NULL) {
+ LOG_ERROR("Out of memory for flash bank buffer");
+ retval = ERROR_FAIL;
+ goto done;
+ }
+
+ if (padding_at_start)
+ memset(buffer, c->default_padded_value, padding_at_start);
+
+ buffer_idx = padding_at_start;
+
+ /* read sections to the buffer */
+ while (buffer_idx < run_size) {
+ size_t size_read;
+
+ size_read = run_size - buffer_idx;
+ if (size_read > sections[section]->size - section_offset)
+ size_read = sections[section]->size - section_offset;
+
+ /* KLUDGE!
+ *
+ * #¤%#"%¤% we have to figure out the section # from the sorted
+ * list of pointers to sections to invoke image_read_section()...
+ */
+ intptr_t diff = (intptr_t)sections[section] - (intptr_t)image->sections;
+ int t_section_num = diff / sizeof(struct imagesection);
+
+ LOG_DEBUG("image_read_section: section = %d, t_section_num = %d, "
+ "section_offset = %"PRIu32", buffer_idx = %"PRIu32", size_read = %zu",
+ section, t_section_num, section_offset,
+ buffer_idx, size_read);
+ retval = image_read_section(image, t_section_num, section_offset,
+ size_read, buffer + buffer_idx, &size_read);
+ if (retval != ERROR_OK || size_read == 0) {
+ free(buffer);
+ goto done;
+ }
+
+ buffer_idx += size_read;
+ section_offset += size_read;
+
+ /* see if we need to pad the section */
+ if (padding[section]) {
+ memset(buffer + buffer_idx, c->default_padded_value, padding[section]);
+ buffer_idx += padding[section];
+ }
+
+ if (section_offset >= sections[section]->size) {
+ section++;
+ section_offset = 0;
+ }
+ }
+
+ retval = ERROR_OK;
+
+ if (unlock)
+ retval = flash_unlock_address_range(target, run_address, run_size);
+ if (retval == ERROR_OK) {
+ if (erase) {
+ /* calculate and erase sectors */
+ retval = flash_erase_address_range(target,
+ true, run_address, run_size);
+ }
+ }
+
+ if (retval == ERROR_OK) {
+ if (write) {
+ /* write flash sectors */
+ retval = flash_driver_write(c, buffer, run_address - c->base, run_size);
+ }
+ }
+
+ if (retval == ERROR_OK) {
+ if (verify) {
+ /* verify flash sectors */
+ retval = flash_driver_verify(c, buffer, run_address - c->base, run_size);
+ }
+ }
+
+ free(buffer);
+
+ if (retval != ERROR_OK) {
+ /* abort operation */
+ goto done;
+ }
+
+ if (written != NULL)
+ *written += run_size; /* add run size to total written counter */
+ }
+
+done:
+ free(sections);
+ free(padding);
+
+ return retval;
+}
+
+int flash_write(struct target *target, struct image *image,
+ uint32_t *written, bool erase)
+{
+ return flash_write_unlock_verify(target, image, written, erase, false, true, false);
+}
+
+struct flash_sector *alloc_block_array(uint32_t offset, uint32_t size,
+ unsigned int num_blocks)
+{
+ struct flash_sector *array = calloc(num_blocks, sizeof(struct flash_sector));
+ if (array == NULL)
+ return NULL;
+
+ for (unsigned int i = 0; i < num_blocks; i++) {
+ array[i].offset = offset;
+ array[i].size = size;
+ array[i].is_erased = -1;
+ array[i].is_protected = -1;
+ offset += size;
+ }
+
+ return array;
+}