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/*
* spiflash_n25q128.h
* ------------------
* Functions and defines for accessing SPI flash with part number n25q128.
*
* The Alpha board has two of these SPI flash memorys, the FPGA config memory
* and the keystore memory.
*
* Copyright (c) 2016-2017, NORDUnet A/S All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of the NORDUnet nor the names of its contributors may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __STM32_SPIFLASH_N25Q128_H
#define __STM32_SPIFLASH_N25Q128_H
#include "stm32f4xx_hal.h"
#define N25Q128_COMMAND_READ 0x03
#define N25Q128_COMMAND_READ_STATUS 0x05
#define N25Q128_COMMAND_READ_ID 0x9E
#define N25Q128_COMMAND_WRITE_ENABLE 0x06
#define N25Q128_COMMAND_ERASE_SECTOR 0xD8
#define N25Q128_COMMAND_ERASE_SUBSECTOR 0x20
#define N25Q128_COMMAND_ERASE_BULK 0xC7
#define N25Q128_COMMAND_PAGE_PROGRAM 0x02
#define N25Q128_PAGE_SIZE 0x100 // 256
#define N25Q128_NUM_PAGES 0x10000 // 65536
#define N25Q128_SECTOR_SIZE 0x10000 // 65536
#define N25Q128_NUM_SECTORS 0x100 // 256
#define N25Q128_SUBSECTOR_SIZE 0x1000 // 4096
#define N25Q128_NUM_SUBSECTORS 0x1000 // 4096
#define N25Q128_SPI_TIMEOUT 1000
#define N25Q128_ID_MANUFACTURER 0x20
#define N25Q128_ID_DEVICE_TYPE 0xBA
#define N25Q128_ID_DEVICE_CAPACITY 0x18
struct spiflash_ctx {
SPI_HandleTypeDef *hspi;
GPIO_TypeDef *cs_n_port;
uint16_t cs_n_pin;
};
extern int n25q128_check_id(struct spiflash_ctx *ctx);
extern int n25q128_read_data(struct spiflash_ctx *ctx, uint32_t offset, uint8_t *buf, const uint32_t len);
extern int n25q128_write_page(struct spiflash_ctx *ctx, uint32_t page_offset, const uint8_t *page_buffer);
extern int n25q128_write_data(struct spiflash_ctx *ctx, uint32_t offset, const uint8_t *buf, const uint32_t len);
extern int n25q128_erase_subsector(struct spiflash_ctx *ctx, uint32_t subsector_offset);
extern int n25q128_erase_sector(struct spiflash_ctx *ctx, uint32_t sector_offset);
extern int n25q128_erase_bulk(struct spiflash_ctx *ctx);
#define n25q128_read_page(ctx, page_offset, page_buffer) \
n25q128_read_data(ctx, page_offset * N25Q128_PAGE_SIZE, page_buffer, N25Q128_PAGE_SIZE)
#define n25q128_read_subsector(ctx, subsector_offset, subsector_buffer) \
n25q128_read_data(ctx, subsector_offset * N25Q128_SUBSECTOR_SIZE, subsector_buffer, N25Q128_SUBSECTOR_SIZE)
#endif /* __STM32_SPIFLASH_N25Q128_H */
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