struct stm32lx_flash_bank *stm32lx_info = bank->driver_priv;
int i;
uint16_t flash_size_in_kb;
+ uint16_t max_flash_size_in_kb;
uint32_t device_id;
stm32lx_info->probed = 0;
LOG_DEBUG("device id = 0x%08" PRIx32 "", device_id);
- /* get flash size from target. */
- retval = target_read_u16(target, F_SIZE, &flash_size_in_kb);
- if (retval != ERROR_OK) {
- LOG_WARNING("failed reading flash size, default to max target family");
- /* failed reading flash size, default to max target family */
- flash_size_in_kb = 0xffff;
+ /* set max flash size depending on family */
+ switch (device_id & 0xfff) {
+ case 0x416:
+ max_flash_size_in_kb = 128;
+ break;
+ case 0x436:
+ max_flash_size_in_kb = 384;
+ break;
+ default:
+ LOG_WARNING("Cannot identify target as a STM32L family.");
+ return ERROR_FAIL;
}
- /* some variants read 0 for flash size register
- * use a max flash size as a default */
- if (flash_size_in_kb == 0)
- flash_size_in_kb = 0xffff;
+ /* get flash size from target. */
+ retval = target_read_u16(target, F_SIZE, &flash_size_in_kb);
- if ((device_id & 0xfff) == 0x416) {
- /* check for early silicon */
- if (flash_size_in_kb == 0xffff) {
- /* number of sectors may be incorrrect on early silicon */
- LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 128k flash");
- flash_size_in_kb = 128;
- }
- } else if ((device_id & 0xfff) == 0x436) {
- /* check for early silicon */
- if (flash_size_in_kb == 0xffff) {
- /* number of sectors may be incorrrect on early silicon */
- LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 384k flash");
- flash_size_in_kb = 384;
- }
- } else {
- LOG_WARNING("Cannot identify target as a STM32L family.");
- return ERROR_FAIL;
+ /* failed reading flash size or flash size invalid (early silicon),
+ * default to max target family */
+ if (retval != ERROR_OK || flash_size_in_kb == 0xffff || flash_size_in_kb == 0) {
+ LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming %dk flash",
+ max_flash_size_in_kb);
+ flash_size_in_kb = max_flash_size_in_kb;
}
/* STM32L - we have 32 sectors, 16 pages per sector -> 512 pages