flash.h File Reference

Public API for FLASH drivers. More...

#include <errno.h>
#include <zephyr/types.h>
#include <stddef.h>
#include <sys/types.h>
#include <zephyr/device.h>
#include <zephyr/syscalls/flash.h>

Go to the source code of this file.

Data Structures
struct	flash_pages_layout
struct	flash_parameters
	Flash memory parameters. More...
struct	flash_driver_api
struct	flash_pages_info

Macros
#define	FLASH_ERASE_C_EXPLICIT   0x01
	Set for ordinary Flash where erase is needed before write of random data.
#define	FLASH_ERASE_CAPS_UNSET   (int)-1
	Reserved for users as initializer for variables that will later store capabilities.
#define	FLASH_ERASE_C_SUPPORTED   0x02
#define	FLASH_ERASE_C_VAL_BIT   0x04
#define	FLASH_ERASE_UNIFORM_PAGE   0x08
#define	FLASH_EX_OP_VENDOR_BASE   0x8000
#define	FLASH_EX_OP_IS_VENDOR(c)   ((c) & FLASH_EX_OP_VENDOR_BASE)

Typedefs
typedef int(*	flash_api_read) (const struct device *dev, off_t offset, void *data, size_t len)
typedef int(*	flash_api_write) (const struct device *dev, off_t offset, const void *data, size_t len)
	Flash write implementation handler type.
typedef int(*	flash_api_erase) (const struct device *dev, off_t offset, size_t size)
	Flash erase implementation handler type.
typedef const struct flash_parameters *(*	flash_api_get_parameters) (const struct device *dev)
typedef void(*	flash_api_pages_layout) (const struct device *dev, const struct flash_pages_layout **layout, size_t *layout_size)
	Retrieve a flash device's layout.
typedef int(*	flash_api_sfdp_read) (const struct device *dev, off_t offset, void *data, size_t len)
typedef int(*	flash_api_read_jedec_id) (const struct device *dev, uint8_t *id)
typedef int(*	flash_api_ex_op) (const struct device *dev, uint16_t code, const uintptr_t in, void *out)
typedef bool(*	flash_page_cb) (const struct flash_pages_info *info, void *data)
	Callback type for iterating over flash pages present on a device.

Enumerations
enum	flash_ex_op_types { FLASH_EX_OP_RESET = 0 }
	Enumeration for extra flash operations. More...

Functions
static int	flash_params_get_erase_cap (const struct flash_parameters *p)
int	flash_read (const struct device *dev, off_t offset, void *data, size_t len)
	Read data from flash.
int	flash_write (const struct device *dev, off_t offset, const void *data, size_t len)
	Write buffer into flash memory.
int	flash_erase (const struct device *dev, off_t offset, size_t size)
	Erase part or all of a flash memory.
int	flash_fill (const struct device *dev, uint8_t val, off_t offset, size_t size)
	Fill selected range of device with specified value.
int	flash_flatten (const struct device *dev, off_t offset, size_t size)
	Erase part or all of a flash memory or level it.
int	flash_get_page_info_by_offs (const struct device *dev, off_t offset, struct flash_pages_info *info)
	Get the size and start offset of flash page at certain flash offset.
int	flash_get_page_info_by_idx (const struct device *dev, uint32_t page_index, struct flash_pages_info *info)
	Get the size and start offset of flash page of certain index.
size_t	flash_get_page_count (const struct device *dev)
	Get the total number of flash pages.
void	flash_page_foreach (const struct device *dev, flash_page_cb cb, void *data)
	Iterate over all flash pages on a device.
int	flash_sfdp_read (const struct device *dev, off_t offset, void *data, size_t len)
	Read data from Serial Flash Discoverable Parameters.
int	flash_read_jedec_id (const struct device *dev, uint8_t *id)
	Read the JEDEC ID from a compatible flash device.
size_t	flash_get_write_block_size (const struct device *dev)
	Get the minimum write block size supported by the driver.
const struct flash_parameters *	flash_get_parameters (const struct device *dev)
	Get pointer to flash_parameters structure.
int	flash_ex_op (const struct device *dev, uint16_t code, const uintptr_t in, void *out)
	Execute flash extended operation on given device.

Detailed Description

Public API for FLASH drivers.