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// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
/* Copyright 2013-2017 IBM Corp. */
#ifndef __LIBFLASH_H
#define __LIBFLASH_H
#include <stdint.h>
#include <stdbool.h>
#include <libflash/blocklevel.h>
/* API status/return:
*
* <0 = flash controller errors passed through,
* 0 = success
* >0 = libflash error
*/
#include <libflash/errors.h>
#ifndef MIN
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#endif
/* Flash chip, opaque */
struct flash_chip;
struct spi_flash_ctrl;
int flash_init(struct spi_flash_ctrl *ctrl, struct blocklevel_device **bl,
struct flash_chip **flash_chip);
void flash_exit(struct blocklevel_device *bl);
/*
* Function which till call close on the underlying struct spi_flash_ctrl
*/
void flash_exit_close(struct blocklevel_device *bl, void (*close)(struct spi_flash_ctrl *ctrl));
/* libflash sets the 4b mode automatically based on the flash
* size and controller capabilities but it can be overriden
*/
int flash_force_4b_mode(struct flash_chip *c, bool enable_4b);
/*
* This provides a wapper around flash_read() on ECCed data. All params are
* the same as to flash_read(). Not passing true in ecc is akin to calling
* flash_read() directly.
*
* len is length of data without ecc attached therefore this will read beyond
* pos + len.
*/
int flash_read_corrected(struct blocklevel_device *bl, uint32_t pos, void *buf,
uint32_t len, bool ecc);
/*
* This provides a wrapper around flash_write() on ECCed data. All params are
* the same as to flash_write(). Not passing true in ecc is akin to calling
* flash_write() directly.
*
* size is length of data without ECC attached therefore this will write beyond
* dst + size.
*/
int flash_write_corrected(struct blocklevel_device *bl, uint32_t dst, const void *src,
uint32_t size, bool verify, bool ecc);
/*
* This provides a wrapper around flash_smart_write() on ECCed data. All
* params are the same as to flash_smart_write(). Not passing true in ecc is
* akin to calling flash_smart_write() directly.
*
* size is length of data without ECC attached therefore this will write beyond
* dst + size.
*/
int flash_smart_write_corrected(struct blocklevel_device *bl, uint32_t dst, const void *src,
uint32_t size, bool ecc);
/* chip erase may not be supported by all chips/controllers, get ready
* for FLASH_ERR_CHIP_ER_NOT_SUPPORTED
*/
int flash_erase_chip(struct flash_chip *c);
#endif /* __LIBFLASH_H */
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