+struct flash_bank *get_flash_bank_by_num_noprobe(int num)
+{
+ struct flash_bank *p;
+ 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;
+}
+
+int flash_get_bank_count(void)
+{
+ struct flash_bank *p;
+ int i = 0;
+ for (p = flash_banks; p; p = p->next)
+ {
+ i++;
+ }
+ return i;
+}
+
+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\n");
+ return retval;
+ }
+ }
+
+ *bank_result = bank;
+ return ERROR_OK;
+}
+
+int get_flash_bank_by_num(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\n");
+ 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, uint32_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)
+ {
+ int retval;
+ retval = c->driver->auto_probe(c);
+
+ if (retval != ERROR_OK)
+ {
+ LOG_ERROR("auto_probe failed\n");
+ return retval;
+ }
+ /* check whether address belongs to this flash bank */
+ if ((addr >= c->base) && (addr <= c->base + (c->size - 1)) && target == c->target)
+ {
+ *result_bank = c;
+ return ERROR_OK;
+ }
+ }
+ *result_bank = NULL;
+ if (check)
+ {
+ LOG_ERROR("No flash at address 0x%08" PRIx32 "\n", addr);
+ return ERROR_FAIL;
+ }
+ return ERROR_OK;
+}
+
+int default_flash_mem_blank_check(struct flash_bank *bank)
+{
+ struct target *target = bank->target;
+ const int buffer_size = 1024;
+ int i;
+ 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 (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 > (j - bank->sectors[i].size))
+ {
+ chunk = (j - bank->sectors[i].size);
+ }
+
+ 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] != 0xFF)
+ {
+ 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 i;
+ int retval;
+ int fast_check = 0;
+ uint32_t blank;
+
+ if (bank->target->state != TARGET_HALTED)
+ {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ for (i = 0; i < bank->num_sectors; i++)
+ {
+ uint32_t address = bank->base + bank->sectors[i].offset;
+ uint32_t size = bank->sectors[i].size;
+
+ if ((retval = target_blank_check_memory(target, address, size, &blank)) != ERROR_OK)
+ {
+ fast_check = 0;
+ break;
+ }
+ if (blank == 0xFF)
+ bank->sectors[i].is_erased = 1;
+ else
+ bank->sectors[i].is_erased = 0;
+ fast_check = 1;
+ }
+
+ if (!fast_check)
+ {
+ LOG_USER("Running slow fallback erase check - add working memory");
+ return default_flash_mem_blank_check(bank);
+ }
+
+ return ERROR_OK;
+}
+
+/* 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.
+ *
+ * (Note a current bad assumption: that protection operates on the same
+ * size sectors as erase operations use.)
+ *
+ * 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, uint32_t addr, uint32_t length,