124 	FLASH_TypeDef *regs = FLASH_STM32_REGS(dev);  in flash_stm32_flush_caches()
126 	if (regs->ACR & FLASH_ACR_DCEN) {  in flash_stm32_flush_caches()
127 		regs->ACR &= ~FLASH_ACR_DCEN;  in flash_stm32_flush_caches()
128 		regs->ACR |= FLASH_ACR_DCRST;  in flash_stm32_flush_caches()
129 		regs->ACR &= ~FLASH_ACR_DCRST;  in flash_stm32_flush_caches()
130 		regs->ACR |= FLASH_ACR_DCEN;  in flash_stm32_flush_caches()
233 	FLASH_TypeDef *regs = FLASH_STM32_REGS(dev);  in flash_stm32_write_protection()  local
247 		regs->NSCR |= FLASH_STM32_NSLOCK;  in flash_stm32_write_protection()
249 		if (regs->NSCR & FLASH_STM32_NSLOCK) {  in flash_stm32_write_protection()
250 			regs->NSKEYR = FLASH_KEY1;  in flash_stm32_write_protection()
251 			regs->NSKEYR = FLASH_KEY2;  in flash_stm32_write_protection()
256 		regs->CR |= FLASH_CR_LOCK;  in flash_stm32_write_protection()
258 		if (regs->CR & FLASH_CR_LOCK) {  in flash_stm32_write_protection()
259 			regs->KEYR = FLASH_KEY1;  in flash_stm32_write_protection()
260 			regs->KEYR = FLASH_KEY2;  in flash_stm32_write_protection()
265 		regs->PECR |= FLASH_PECR_PRGLOCK;  in flash_stm32_write_protection()
266 		regs->PECR |= FLASH_PECR_PELOCK;  in flash_stm32_write_protection()
268 		if (regs->PECR & FLASH_PECR_PRGLOCK) {  in flash_stm32_write_protection()
270 			regs->PEKEYR = FLASH_PEKEY1;  in flash_stm32_write_protection()
271 			regs->PEKEYR = FLASH_PEKEY2;  in flash_stm32_write_protection()
272 			regs->PRGKEYR = FLASH_PRGKEY1;  in flash_stm32_write_protection()
273 			regs->PRGKEYR = FLASH_PRGKEY2;  in flash_stm32_write_protection()
293 	FLASH_TypeDef *regs = FLASH_STM32_REGS(dev);  in flash_stm32_option_bytes_lock()  local
297 		regs->OPTCR |= FLASH_OPTCR_OPTLOCK;  in flash_stm32_option_bytes_lock()
298 	} else if (regs->OPTCR & FLASH_OPTCR_OPTLOCK) {  in flash_stm32_option_bytes_lock()
299 		regs->OPTKEYR = FLASH_OPT_KEY1;  in flash_stm32_option_bytes_lock()
300 		regs->OPTKEYR = FLASH_OPT_KEY2;  in flash_stm32_option_bytes_lock()
314 		regs->CR &= ~FLASH_CR_OPTWRE;  in flash_stm32_option_bytes_lock()
315 	} else if (!(regs->CR & FLASH_CR_OPTWRE)) {  in flash_stm32_option_bytes_lock()
316 		regs->OPTKEYR = FLASH_OPTKEY1;  in flash_stm32_option_bytes_lock()
317 		regs->OPTKEYR = FLASH_OPTKEY2;  in flash_stm32_option_bytes_lock()
321 		regs->CR |= FLASH_CR_OPTLOCK;  in flash_stm32_option_bytes_lock()
322 	} else if (regs->CR & FLASH_CR_OPTLOCK) {  in flash_stm32_option_bytes_lock()
323 		regs->OPTKEYR = FLASH_OPTKEY1;  in flash_stm32_option_bytes_lock()
324 		regs->OPTKEYR = FLASH_OPTKEY2;  in flash_stm32_option_bytes_lock()
328 		regs->PECR |= FLASH_PECR_OPTLOCK;  in flash_stm32_option_bytes_lock()
329 	} else if (regs->PECR & FLASH_PECR_OPTLOCK) {  in flash_stm32_option_bytes_lock()
330 		regs->OPTKEYR = FLASH_OPTKEY1;  in flash_stm32_option_bytes_lock()
331 		regs->OPTKEYR = FLASH_OPTKEY2;  in flash_stm32_option_bytes_lock()
335 		regs->NSCR |= FLASH_NSCR_OPTLOCK;  in flash_stm32_option_bytes_lock()
336 	} else if (regs->NSCR & FLASH_NSCR_OPTLOCK) {  in flash_stm32_option_bytes_lock()
337 		regs->OPTKEYR = FLASH_OPTKEY1;  in flash_stm32_option_bytes_lock()
338 		regs->OPTKEYR = FLASH_OPTKEY2;  in flash_stm32_option_bytes_lock()
342 		regs->NSCR1 |= FLASH_NSCR1_OPTLOCK;  in flash_stm32_option_bytes_lock()
343 	} else if (regs->NSCR1 & FLASH_NSCR1_OPTLOCK) {  in flash_stm32_option_bytes_lock()
344 		regs->OPTKEYR = FLASH_OPTKEY1;  in flash_stm32_option_bytes_lock()
345 		regs->OPTKEYR = FLASH_OPTKEY2;  in flash_stm32_option_bytes_lock()
369 	FLASH_TypeDef *regs = FLASH_STM32_REGS(dev);  in flash_stm32_control_register_disable()  local
379 	regs->CR |= FLASH_CR_LOCK;  in flash_stm32_control_register_disable()
382 	regs->KEYR = 0xffffffff;  in flash_stm32_control_register_disable()
390 	ARG_UNUSED(regs);  in flash_stm32_control_register_disable()
398 	FLASH_TypeDef *regs = FLASH_STM32_REGS(dev);  in flash_stm32_option_bytes_disable()  local
408 	regs->OPTCR |= FLASH_OPTCR_OPTLOCK;  in flash_stm32_option_bytes_disable()
411 	regs->OPTKEYR = 0xffffffff;  in flash_stm32_option_bytes_disable()
419 	ARG_UNUSED(regs);  in flash_stm32_option_bytes_disable()
435 	.regs = (FLASH_TypeDef *) DT_INST_REG_ADDR(0),