diff options
Diffstat (limited to 'src/flash')
| -rw-r--r-- | src/flash/nand.h | 48 |
1 files changed, 47 insertions, 1 deletions
diff --git a/src/flash/nand.h b/src/flash/nand.h index b780f284..a30a6549 100644 --- a/src/flash/nand.h +++ b/src/flash/nand.h @@ -32,32 +32,78 @@ struct nand_device; #define __NAND_DEVICE_COMMAND(name) \ COMMAND_HELPER(name, struct nand_device *nand) +/** + * Interface for NAND flash controllers. Not all of these functions are + * required for full functionality of the NAND driver, but better performance + * can be achieved by implementing each function. + */ struct nand_flash_controller { + /** Driver name that is used to select it from configuration files. */ char *name; - const struct command_registration *commands; + + const struct command_registration *commands; + + /** NAND device command called when driver is instantiated during configuration. */ __NAND_DEVICE_COMMAND((*nand_device_command)); + + /** Register controller specific commands as a TCL interface to the driver. */ + int (*register_commands)(struct command_context *cmd_ctx); + + /** Initialize the NAND device. */ int (*init)(struct nand_device *nand); + + /** Reset the NAND device. */ int (*reset)(struct nand_device *nand); + + /** Issue a command to the NAND device. */ int (*command)(struct nand_device *nand, uint8_t command); + + /** Write an address to the NAND device. */ int (*address)(struct nand_device *nand, uint8_t address); + + /** Write word of data to the NAND device. */ int (*write_data)(struct nand_device *nand, uint16_t data); + + /** Read word of data from the NAND device. */ int (*read_data)(struct nand_device *nand, void *data); + + /** Write a block of data to the NAND device. */ int (*write_block_data)(struct nand_device *nand, uint8_t *data, int size); + + /** Read a block of data from the NAND device. */ int (*read_block_data)(struct nand_device *nand, uint8_t *data, int size); + + /** Write a page to the NAND device. */ int (*write_page)(struct nand_device *nand, uint32_t page, uint8_t *data, uint32_t data_size, uint8_t *oob, uint32_t oob_size); + + /** Read a page from the NAND device. */ int (*read_page)(struct nand_device *nand, uint32_t page, uint8_t *data, uint32_t data_size, uint8_t *oob, uint32_t oob_size); + + /** Check if the controller is ready for more instructions with timeout. */ int (*controller_ready)(struct nand_device *nand, int timeout); + + /** Check if the NAND device is ready for more instructions with timeout. */ int (*nand_ready)(struct nand_device *nand, int timeout); }; #define NAND_DEVICE_COMMAND_HANDLER(name) static __NAND_DEVICE_COMMAND(name) +/** + * Representation of a single NAND block in a NAND device. + */ struct nand_block { + /** Offset to the block. */ uint32_t offset; + + /** Size of the block. */ uint32_t size; + + /** True if the block has been erased. */ int is_erased; + + /** True if the block is bad. */ int is_bad; }; |