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patches to improve resistance to fault injection #504

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merged 1 commit into from
Jan 28, 2021
Merged

patches to improve resistance to fault injection #504

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12 changes: 6 additions & 6 deletions targets/stm32l432/src/device.c
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Original file line number Diff line number Diff line change
Expand Up @@ -304,6 +304,12 @@ void device_init()

hw_init(LOW_FREQUENCY);

#if BOOT_TO_DFU
flash_option_bytes_init(1);
#else
flash_option_bytes_init(0);
#endif

if (! tsc_sensor_exists())
{
_NFC_status = nfc_init();
Expand All @@ -329,12 +335,6 @@ void device_init()

device_migrate();

#if BOOT_TO_DFU
flash_option_bytes_init(1);
#else
flash_option_bytes_init(0);
#endif


}

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6 changes: 5 additions & 1 deletion targets/stm32l432/src/flash.c
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Original file line number Diff line number Diff line change
Expand Up @@ -70,7 +70,11 @@ void flash_option_bytes_init(int boot_from_dfu)

flash_lock();

__enable_irq();

/* Perform option byte loading which triggers a device reset. */
FLASH->CR |= FLASH_CR_OBL_LAUNCH;

while (true);
}

void flash_erase_page(uint8_t page)
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