drivers: flash: stm32: STM32F7 flash memory suport

/*

 * Copyright (c) 2018 Yurii Hamann

 *

 * SPDX-License-Identifier: Apache-2.0

 */

#ifndef _STM32F7X_FLASH_REGISTERS_H_

#define _STM32F7X_FLASH_REGISTERS_H_

/**

 * @brief

 *

 * Based on reference manual:

 *   RM0385 Reference manual STM32F75xxx and STM32F74xxx

 *   advanced ARM(r)-based 32-bit MCUs

 *

 * Chapter 3: Embedded Flash Memory

 */

union __flash_acr {

	u32_t val;

	struct {

		u32_t latency :4 __packed;

		u32_t rsvd__4_7 :4 __packed;

		u32_t prften :1 __packed;

		u32_t arten :1 __packed;

		u32_t rsvd__10 :1 __packed;

		u32_t artrst :1 __packed;

		u32_t rsvd__12_31 :20 __packed;

	} bit;

};

/* 3.7 FLASH registers */

struct stm32f7x_flash {

	volatile union __flash_acr acr;

	volatile u32_t keyr;

	volatile u32_t optkeyr;

	volatile u32_t sr;

	volatile u32_t cr;

	volatile u32_t optcr;

	volatile u32_t optcr1;

};

#endif	/* _STM32F7X_FLASHREGISTERS_H_ */

#define _STM32F7_SOC_REGISTERS_H_

/* include register mapping headers */

#include "flash_registers.h"

#endif /* _STM32F7_SOC_REGISTERS_H_ */