Serial NOR flash

Driver for serial NOR flash memory technology devices attached via SPI. More...

Detailed Description

Driver for serial NOR flash memory technology devices attached via SPI.

Files
file	mtd_spi_nor.h
	Interface definition for the serial flash memory driver.

Data Structures
struct	mtd_spi_nor_opcode_t
	SPI NOR flash opcode table. More...
struct	mtd_jedec_id_t
	Internal representation of JEDEC memory ID codes. More...
struct	mtd_spi_nor_params_t
	Compile-time parameters for a serial flash device. More...
struct	mtd_spi_nor_t
	Device descriptor for serial flash memory devices. More...

Macros
#define	JEDEC_NEXT_BANK   (0x7f)
	Byte to signal increment bank number when reading manufacturer ID. More...
#define	JEDEC_BANK_MAX   (10)
	The highest possible bank number when reading manufacturer ID. More...
#define	SPI_NOR_F_SECT_4K   (1)
	Flag to set when the device support 4KiB sector erase (sector_erase opcode)
#define	SPI_NOR_F_SECT_32K   (2)
	Flag to set when the device support 32KiB block erase (block_erase_32k opcode)
#define	SPI_NOR_F_SECT_64K   (4)
	Flag to set when the device support 64KiB block erase (block_erase_32k opcode)

Variables
const mtd_desc_t	mtd_spi_nor_driver
	NOR flash SPI MTD device operations table.
const mtd_spi_nor_opcode_t	mtd_spi_nor_opcode_default
	Default command opcodes. More...
const mtd_spi_nor_opcode_t	mtd_spi_nor_opcode_default_4bytes
	Default 4-byte addresses opcodes. More...

Macro Definition Documentation

JEDEC_BANK_MAX

#define JEDEC_BANK_MAX   (10)

The highest possible bank number when reading manufacturer ID.

See also

http://www.jedec.org/standards-documents/results/jep106

Definition at line 82 of file mtd_spi_nor.h.

JEDEC_NEXT_BANK

#define JEDEC_NEXT_BANK   (0x7f)

Byte to signal increment bank number when reading manufacturer ID.

See also

http://www.jedec.org/standards-documents/results/jep106

Definition at line 75 of file mtd_spi_nor.h.

Variable Documentation

mtd_spi_nor_opcode_default

const mtd_spi_nor_opcode_t mtd_spi_nor_opcode_default

Default command opcodes.

The numbers were taken from Micron M25P16, but the same opcodes can be found in Macronix MX25L25735E, and multiple other data sheets for different devices, as well as in the Linux kernel, so they seem quite sensible for default values.

mtd_spi_nor_opcode_default_4bytes

const mtd_spi_nor_opcode_t mtd_spi_nor_opcode_default_4bytes

Default 4-byte addresses opcodes.

Commands for 4-byte addresses chips (above 128Mb)