/** @addtogroup flash_defines
 *
 */
/*
 * This file is part of the libopencm3 project.
 *
 * Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
 * Copyright (C) 2010 Mark Butler <mbutler@physics.otago.ac.nz>
 *
 * This library is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library.  If not, see <http://www.gnu.org/licenses/>.
 */

/*
 * For details see:
 * PM0081 Programming manual: STM32F40xxx and STM32F41xxx Flash programming
 * September 2011, Doc ID 018520 Rev 1
 * https://github.com/libopencm3/libopencm3-archive/blob/master/st_micro/DM00023388.pdf
 */

/** @cond */
#ifdef LIBOPENCM3_FLASH_H
/** @endcond */
#ifndef LIBOPENCM3_FLASH_COMMON_F01_H
#define LIBOPENCM3_FLASH_COMMON_F01_H
/**@{*/

#include <libopencm3/cm3/common.h>
/* --- FLASH registers ----------------------------------------------------- */

#define FLASH_ACR			MMIO32(FLASH_MEM_INTERFACE_BASE + 0x00)
#define FLASH_KEYR			MMIO32(FLASH_MEM_INTERFACE_BASE + 0x04)
#define FLASH_OPTKEYR			MMIO32(FLASH_MEM_INTERFACE_BASE + 0x08)
#define FLASH_SR			MMIO32(FLASH_MEM_INTERFACE_BASE + 0x0C)
#define FLASH_CR			MMIO32(FLASH_MEM_INTERFACE_BASE + 0x10)
#define FLASH_AR			MMIO32(FLASH_MEM_INTERFACE_BASE + 0x14)
#define FLASH_OBR			MMIO32(FLASH_MEM_INTERFACE_BASE + 0x1C)
#define FLASH_WRPR			MMIO32(FLASH_MEM_INTERFACE_BASE + 0x20)
/* Only present in STM32F10x XL series */
#define FLASH_KEYR2			MMIO32(FLASH_MEM_INTERFACE_BASE + 0x44)
#define FLASH_SR2			MMIO32(FLASH_MEM_INTERFACE_BASE + 0x4C)
#define FLASH_CR2			MMIO32(FLASH_MEM_INTERFACE_BASE + 0x50)
#define FLASH_AR2			MMIO32(FLASH_MEM_INTERFACE_BASE + 0x54)

/* --- FLASH_OPTION bytes ------------------------------------------------- */

#define FLASH_OPTION_BYTE(i)		MMIO16(INFO_BASE+0x0800 + (i)*2)

/* --- FLASH_ACR values ---------------------------------------------------- */

#define FLASH_ACR_LATENCY_SHIFT		0
#define FLASH_ACR_LATENCY		7

#define FLASH_ACR_PRFTBS		(1 << 5)
#define FLASH_ACR_PRFTBE		(1 << 4)

/* --- FLASH_SR values ----------------------------------------------------- */

#define FLASH_SR_EOP			(1 << 5)
#define FLASH_SR_WRPRTERR		(1 << 4)
#define FLASH_SR_PGERR			(1 << 2)
#define FLASH_SR_BSY			(1 << 0)

/* --- FLASH_CR values ----------------------------------------------------- */

#define FLASH_CR_EOPIE			(1 << 12)
#define FLASH_CR_ERRIE			(1 << 10)
#define FLASH_CR_OPTWRE			(1 << 9)
#define FLASH_CR_LOCK			(1 << 7)
#define FLASH_CR_STRT			(1 << 6)
#define FLASH_CR_OPTER			(1 << 5)
#define FLASH_CR_OPTPG			(1 << 4)
#define FLASH_CR_MER			(1 << 2)
#define FLASH_CR_PER			(1 << 1)
#define FLASH_CR_PG			(1 << 0)

/* --- FLASH_OBR values ---------------------------------------------------- */

#define FLASH_OBR_RDPRT_SHIFT		1
#define FLASH_OBR_OPTERR		(1 << 0)

/* --- FLASH Keys -----------------------------------------------------------*/

#define FLASH_KEYR_KEY1			((uint32_t)0x45670123)
#define FLASH_KEYR_KEY2			((uint32_t)0xcdef89ab)

/* --- Function prototypes ------------------------------------------------- */

BEGIN_DECLS

void flash_set_ws(uint32_t ws);
void flash_prefetch_buffer_enable(void);
void flash_prefetch_buffer_disable(void);
void flash_unlock(void);
void flash_lock(void);
void flash_clear_pgerr_flag(void);
void flash_clear_eop_flag(void);
void flash_clear_wrprterr_flag(void);
void flash_clear_bsy_flag(void);
void flash_clear_status_flags(void);
uint32_t flash_get_status_flags(void);
void flash_wait_for_last_operation(void);
void flash_program_word(uint32_t address, uint32_t data);
void flash_program_half_word(uint32_t address, uint16_t data);
void flash_erase_page(uint32_t page_address);
void flash_erase_all_pages(void);
void flash_unlock_option_bytes(void);
void flash_erase_option_bytes(void);
void flash_program_option_bytes(uint32_t address, uint16_t data);

END_DECLS
/**@}*/

#endif
/** @cond */
#else
#warning "flash_common_f01.h should not be included directly,"
#warning "only via flash.h"
#endif
/** @endcond */

