uint32_t flash_regs_base;
const uint32_t *flash_regs;
bool otp_enabled;
- bool use_flashloader;
enum stm32l4_rdp rdp;
bool tzen;
uint32_t optr;
stm32l4_info->probed = false;
stm32l4_info->otp_enabled = false;
stm32l4_info->user_bank_size = bank->size;
- stm32l4_info->use_flashloader = true;
return ERROR_OK;
}
if (retval != ERROR_OK)
goto err_lock;
- if (stm32l4_info->use_flashloader) {
- /* For TrustZone enabled devices, when TZEN is set and RDP level is 0.5,
- * the debug is possible only in non-secure state.
- * Thus means the flashloader will run in non-secure mode,
- * and the workarea need to be in non-secure RAM */
- if (stm32l4_info->tzen && (stm32l4_info->rdp == RDP_LEVEL_0_5))
- LOG_INFO("RDP level is 0.5, the work-area should reside in non-secure RAM");
- retval = stm32l4_write_block(bank, buffer, offset,
- count / stm32l4_info->data_width);
- }
+ /* For TrustZone enabled devices, when TZEN is set and RDP level is 0.5,
+ * the debug is possible only in non-secure state.
+ * Thus means the flashloader will run in non-secure mode,
+ * and the workarea need to be in non-secure RAM */
+ if (stm32l4_info->tzen && (stm32l4_info->rdp == RDP_LEVEL_0_5))
+ LOG_WARNING("RDP = 0x55, the work-area should be in non-secure RAM (check SAU partitioning)");
+
+ /* first try to write using the loader, for better performance */
+ retval = stm32l4_write_block(bank, buffer, offset,
+ count / stm32l4_info->data_width);
- if (!stm32l4_info->use_flashloader || retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE) {
- LOG_INFO("falling back to single memory accesses");
+ /* if resources are not available write without a loader */
+ if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE) {
+ LOG_WARNING("falling back to programming without a flash loader (slower)");
retval = stm32l4_write_block_without_loader(bank, buffer, offset,
count / stm32l4_info->data_width);
}
return stm32l4_perform_obl_launch(bank);
}
-COMMAND_HANDLER(stm32l4_handle_flashloader_command)
-{
- if (CMD_ARGC < 1 || CMD_ARGC > 2)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- struct flash_bank *bank;
- int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
- if (retval != ERROR_OK)
- return retval;
-
- struct stm32l4_flash_bank *stm32l4_info = bank->driver_priv;
-
- if (CMD_ARGC == 2)
- COMMAND_PARSE_ENABLE(CMD_ARGV[1], stm32l4_info->use_flashloader);
-
- command_print(CMD, "FlashLoader usage is %s", stm32l4_info->use_flashloader ? "enabled" : "disabled");
-
- return ERROR_OK;
-}
-
COMMAND_HANDLER(stm32l4_handle_option_load_command)
{
if (CMD_ARGC != 1)
.usage = "bank_id",
.help = "Unlock entire protected flash device.",
},
- {
- .name = "flashloader",
- .handler = stm32l4_handle_flashloader_command,
- .mode = COMMAND_EXEC,
- .usage = "<bank_id> [enable|disable]",
- .help = "Configure the flashloader usage",
- },
{
.name = "mass_erase",
.handler = stm32l4_handle_mass_erase_command,