/* SPDX-License-Identifier: GPL-2.0+ */ /* * dfu.h - DFU flashable area description * * Copyright (C) 2012 Samsung Electronics * authors: Andrzej Pietrasiewicz <andrzej.p@samsung.com> * Lukasz Majewski <l.majewski@samsung.com> */ #ifndef __DFU_ENTITY_H_ #define __DFU_ENTITY_H_ #include <common.h> #include <linux/list.h> #include <mmc.h> #include <spi_flash.h> #include <linux/usb/composite.h> enum dfu_device_type { DFU_DEV_MMC = 1, DFU_DEV_ONENAND, DFU_DEV_NAND, DFU_DEV_RAM, DFU_DEV_SF, DFU_DEV_MTD, DFU_DEV_VIRT, }; enum dfu_layout { DFU_RAW_ADDR = 1, DFU_FS_FAT, DFU_FS_EXT2, DFU_FS_EXT3, DFU_FS_EXT4, DFU_RAM_ADDR, DFU_SKIP, DFU_SCRIPT, }; enum dfu_op { DFU_OP_READ = 1, DFU_OP_WRITE, DFU_OP_SIZE, }; struct mmc_internal_data { int dev_num; /* RAW programming */ unsigned int lba_start; unsigned int lba_size; unsigned int lba_blk_size; /* eMMC HW partition access */ int hw_partition; /* FAT/EXT */ unsigned int dev; unsigned int part; }; struct mtd_internal_data { struct mtd_info *info; /* RAW programming */ u64 start; u64 size; /* for ubi partition */ unsigned int ubi; }; struct nand_internal_data { /* RAW programming */ u64 start; u64 size; unsigned int dev; unsigned int part; /* for nand/ubi use */ unsigned int ubi; }; struct ram_internal_data { unsigned long start; unsigned int size; }; struct sf_internal_data { struct spi_flash *dev; /* RAW programming */ u64 start; u64 size; /* for sf/ubi use */ unsigned int ubi; }; struct virt_internal_data { int dev_num; }; #define DFU_NAME_SIZE 32 #ifndef DFU_DEFAULT_POLL_TIMEOUT #define DFU_DEFAULT_POLL_TIMEOUT 0 #endif #ifndef DFU_MANIFEST_POLL_TIMEOUT #define DFU_MANIFEST_POLL_TIMEOUT DFU_DEFAULT_POLL_TIMEOUT #endif struct dfu_entity { char name[DFU_NAME_SIZE]; int alt; void *dev_private; enum dfu_device_type dev_type; enum dfu_layout layout; unsigned long max_buf_size; union { struct mmc_internal_data mmc; struct mtd_internal_data mtd; struct nand_internal_data nand; struct ram_internal_data ram; struct sf_internal_data sf; struct virt_internal_data virt; } data; int (*get_medium_size)(struct dfu_entity *dfu, u64 *size); int (*read_medium)(struct dfu_entity *dfu, u64 offset, void *buf, long *len); int (*write_medium)(struct dfu_entity *dfu, u64 offset, void *buf, long *len); int (*flush_medium)(struct dfu_entity *dfu); unsigned int (*poll_timeout)(struct dfu_entity *dfu); void (*free_entity)(struct dfu_entity *dfu); struct list_head list; /* on the fly state */ u32 crc; u64 offset; int i_blk_seq_num; u8 *i_buf; u8 *i_buf_start; u8 *i_buf_end; u64 r_left; long b_left; u32 bad_skip; /* for nand use */ unsigned int inited:1; }; struct list_head; extern struct list_head dfu_list; #ifdef CONFIG_SET_DFU_ALT_INFO /** * set_dfu_alt_info() - set dfu_alt_info environment variable * * If CONFIG_SET_DFU_ALT_INFO=y, this board specific function is called to set * environment variable dfu_alt_info. * * @interface: dfu interface, e.g. "mmc" or "nand" * @devstr: device number as string */ void set_dfu_alt_info(char *interface, char *devstr); #endif /** * dfu_alt_init() - initialize buffer for dfu entities * * @num: number of entities * @dfu: on return allocated buffer * Return: 0 on success */ int dfu_alt_init(int num, struct dfu_entity **dfu); /** * dfu_alt_add() - add alternate to dfu entity buffer * * @dfu: dfu entity * @interface: dfu interface, e.g. "mmc" or "nand" * @devstr: device number as string * @s: string description of alternate * Return: 0 on success */ int dfu_alt_add(struct dfu_entity *dfu, char *interface, char *devstr, char *s); /** * dfu_config_entities() - initialize dfu entitities from envirionment * * Initialize the list of dfu entities from environment variable dfu_alt_info. * The list must be freed by calling dfu_free_entities(). This function bypasses * set_dfu_alt_info(). So typically you should use dfu_init_env_entities() * instead. * * See function :c:func:`dfu_free_entities` * See function :c:func:`dfu_init_env_entities` * * @s: string with alternates * @interface: interface, e.g. "mmc" or "nand" * @devstr: device number as string * Return: 0 on success, a negative error code otherwise */ int dfu_config_entities(char *s, char *interface, char *devstr); /** * dfu_free_entities() - free the list of dfu entities * * Free the internal list of dfu entities. * * See function :c:func:`dfu_init_env_entities` */ void dfu_free_entities(void); /** * dfu_show_entities() - print DFU alt settings list */ void dfu_show_entities(void); /** * dfu_get_alt_number() - get number of alternates * * Return: number of alternates in the dfu entities list */ int dfu_get_alt_number(void); /** * dfu_get_dev_type() - get string representation for dfu device type * * @type: device type * Return: string representation for device type */ const char *dfu_get_dev_type(enum dfu_device_type type); /** * dfu_get_layout() - get string describing layout * * Internally layouts are represented by enum dfu_device_type values. This * function translates an enum value to a human readable string, e.g. DFU_FS_FAT * is translated to "FAT". * * @layout: layout * Result: string representation for the layout */ const char *dfu_get_layout(enum dfu_layout layout); /** * dfu_get_entity() - get dfu entity for an alternate id * * @alt: alternate id * Return: dfu entity */ struct dfu_entity *dfu_get_entity(int alt); char *dfu_extract_token(char** e, int *n); /** * dfu_get_alt() - get alternate id for filename * * Environment variable dfu_alt_info defines the write destinations (alternates) * for different filenames. This function get the index of the alternate for * a filename. If an absolute filename is provided (starting with '/'), the * directory path is ignored. * * @name: filename * Return: id of the alternate or negative error number (-ENODEV) */ int dfu_get_alt(char *name); /** * dfu_init_env_entities() - initialize dfu entitities from envirionment * * Initialize the list of dfu entities from environment variable dfu_alt_info. * The list must be freed by calling dfu_free_entities(). * @interface and @devstr are used to select the relevant set of alternates * from environment variable dfu_alt_info. * * If environment variable dfu_alt_info specifies the interface and the device, * use NULL for @interface and @devstr. * * See function :c:func:`dfu_free_entities` * * @interface: interface, e.g. "mmc" or "nand" * @devstr: device number as string * Return: 0 on success, a negative error code otherwise */ int dfu_init_env_entities(char *interface, char *devstr); unsigned char *dfu_get_buf(struct dfu_entity *dfu); unsigned char *dfu_free_buf(void); unsigned long dfu_get_buf_size(void); bool dfu_usb_get_reset(void); #ifdef CONFIG_DFU_TIMEOUT unsigned long dfu_get_timeout(void); void dfu_set_timeout(unsigned long); #endif /** * dfu_read() - read from dfu entity * * The block sequence number @blk_seq_num is a 16 bit counter that must be * incremented with each call for the same dfu entity @de. * * @de: dfu entity * @buf: buffer * @size: size of buffer * @blk_seq_num: block sequence number * Return: 0 for success, -1 for error */ int dfu_read(struct dfu_entity *de, void *buf, int size, int blk_seq_num); /** * dfu_write() - write to dfu entity * * Write the contents of a buffer @buf to the dfu entity @de. After writing * the last block call dfu_flush(). If a file is already loaded completely * into memory it is preferable to use dfu_write_from_mem_addr() which takes * care of blockwise transfer and flushing. * * The block sequence number @blk_seq_num is a 16 bit counter that must be * incremented with each call for the same dfu entity @de. * * See function :c:func:`dfu_flush` * See function :c:func:`dfu_write_from_mem_addr` * * @de: dfu entity * @buf: buffer * @size: size of buffer * @blk_seq_num: block sequence number * Return: 0 for success, -1 for error */ int dfu_write(struct dfu_entity *de, void *buf, int size, int blk_seq_num); /** * dfu_flush() - flush to dfu entity * * This function has to be called after writing the last block to the dfu * entity @de. * * The block sequence number @blk_seq_num is a 16 bit counter that must be * incremented with each call for the same dfu entity @de. * * See function :c:func:`dfu_write` * * @de: dfu entity * @buf: ignored * @size: ignored * @blk_seq_num: block sequence number of last write - ignored * Return: 0 for success, -1 for error */ int dfu_flush(struct dfu_entity *de, void *buf, int size, int blk_seq_num); /** * dfu_initiated_callback() - weak callback called on DFU transaction start * * It is a callback function called by DFU stack when a DFU transaction is * initiated. This function allows to manage some board specific behavior on * DFU targets. * * @dfu: pointer to the dfu_entity, which should be initialized */ void dfu_initiated_callback(struct dfu_entity *dfu); /** * dfu_flush_callback() - weak callback called at the end of the DFU write * * It is a callback function called by DFU stack after DFU manifestation. * This function allows to manage some board specific behavior on DFU targets * * @dfu: pointer to the dfu_entity, which should be flushed */ void dfu_flush_callback(struct dfu_entity *dfu); /** * dfu_error_callback() - weak callback called at the DFU write error * * It is a callback function called by DFU stack after DFU write error. * This function allows to manage some board specific behavior on DFU targets * * @dfu: pointer to the dfu_entity which cause the error * @msg: the message of the error */ void dfu_error_callback(struct dfu_entity *dfu, const char *msg); int dfu_transaction_initiate(struct dfu_entity *dfu, bool read); void dfu_transaction_cleanup(struct dfu_entity *dfu); /* * dfu_defer_flush - pointer to store dfu_entity for deferred flashing. * It should be NULL when not used. */ extern struct dfu_entity *dfu_defer_flush; /** * dfu_get_defer_flush() - get current value of dfu_defer_flush pointer * * Return: value of the dfu_defer_flush pointer */ static inline struct dfu_entity *dfu_get_defer_flush(void) { return dfu_defer_flush; } /** * dfu_set_defer_flush() - set the dfu_defer_flush pointer * * @dfu: pointer to the dfu_entity, which should be written */ static inline void dfu_set_defer_flush(struct dfu_entity *dfu) { dfu_defer_flush = dfu; } /** * dfu_write_from_mem_addr() - write data from memory to DFU managed medium * * This function adds support for writing data starting from fixed memory * address (like $loadaddr) to dfu managed medium (e.g. NAND, MMC, file system) * * @dfu: dfu entity to which we want to store data * @buf: fixed memory address from where data starts * @size: number of bytes to write * * Return: 0 on success, other value on failure */ int dfu_write_from_mem_addr(struct dfu_entity *dfu, void *buf, int size); /* Device specific */ /* Each entity has 5 arguments in maximum. */ #define DFU_MAX_ENTITY_ARGS 5 #if CONFIG_IS_ENABLED(DFU_MMC) extern int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *devstr, char **argv, int argc); #else static inline int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *devstr, char **argv, int argc) { puts("MMC support not available!\n"); return -1; } #endif #if CONFIG_IS_ENABLED(DFU_NAND) extern int dfu_fill_entity_nand(struct dfu_entity *dfu, char *devstr, char **argv, int argc); #else static inline int dfu_fill_entity_nand(struct dfu_entity *dfu, char *devstr, char **argv, int argc) { puts("NAND support not available!\n"); return -1; } #endif #if CONFIG_IS_ENABLED(DFU_RAM) extern int dfu_fill_entity_ram(struct dfu_entity *dfu, char *devstr, char **argv, int argc); #else static inline int dfu_fill_entity_ram(struct dfu_entity *dfu, char *devstr, char **argv, int argc) { puts("RAM support not available!\n"); return -1; } #endif #if CONFIG_IS_ENABLED(DFU_SF) extern int dfu_fill_entity_sf(struct dfu_entity *dfu, char *devstr, char **argv, int argc); #else static inline int dfu_fill_entity_sf(struct dfu_entity *dfu, char *devstr, char **argv, int argc) { puts("SF support not available!\n"); return -1; } #endif #if CONFIG_IS_ENABLED(DFU_MTD) extern int dfu_fill_entity_mtd(struct dfu_entity *dfu, char *devstr, char **argv, int argc); #else static inline int dfu_fill_entity_mtd(struct dfu_entity *dfu, char *devstr, char **argv, int argc) { puts("MTD support not available!\n"); return -1; } #endif #if CONFIG_IS_ENABLED(DFU_VIRT) int dfu_fill_entity_virt(struct dfu_entity *dfu, char *devstr, char **argv, int argc); int dfu_write_medium_virt(struct dfu_entity *dfu, u64 offset, void *buf, long *len); int dfu_get_medium_size_virt(struct dfu_entity *dfu, u64 *size); int dfu_read_medium_virt(struct dfu_entity *dfu, u64 offset, void *buf, long *len); #else static inline int dfu_fill_entity_virt(struct dfu_entity *dfu, char *devstr, char **argv, int argc) { puts("VIRT support not available!\n"); return -1; } #endif extern bool dfu_reinit_needed; #if CONFIG_IS_ENABLED(DFU_WRITE_ALT) /** * dfu_write_by_name() - write data to DFU medium * @dfu_entity_name: Name of DFU entity to write * @addr: Address of data buffer to write * @len: Number of bytes * @interface: Destination DFU medium (e.g. "mmc") * @devstring: Instance number of destination DFU medium (e.g. "1") * * This function is storing data received on DFU supported medium which * is specified by @dfu_entity_name. * * Return: 0 - on success, error code - otherwise */ int dfu_write_by_name(char *dfu_entity_name, void *addr, unsigned int len, char *interface, char *devstring); /** * dfu_write_by_alt() - write data to DFU medium * @dfu_alt_num: DFU alt setting number * @addr: Address of data buffer to write * @len: Number of bytes * @interface: Destination DFU medium (e.g. "mmc") * @devstring: Instance number of destination DFU medium (e.g. "1") * * This function is storing data received on DFU supported medium which * is specified by @dfu_alt_name. * * Return: 0 - on success, error code - otherwise */ int dfu_write_by_alt(int dfu_alt_num, void *addr, unsigned int len, char *interface, char *devstring); #else static inline int dfu_write_by_name(char *dfu_entity_name, void *addr, unsigned int len, char *interface, char *devstring) { puts("write support for DFU not available!\n"); return -ENOSYS; } static inline int dfu_write_by_alt(int dfu_alt_num, void *addr, unsigned int len, char *interface, char *devstring) { puts("write support for DFU not available!\n"); return -ENOSYS; } #endif int dfu_add(struct usb_configuration *c); #endif /* __DFU_ENTITY_H_ */