1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * dfu.h - DFU flashable area description
5 * Copyright (C) 2012 Samsung Electronics
6 * authors: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
7 * Lukasz Majewski <l.majewski@samsung.com>
10 #ifndef __DFU_ENTITY_H_
11 #define __DFU_ENTITY_H_
14 #include <linux/list.h>
16 #include <spi_flash.h>
17 #include <linux/usb/composite.h>
19 enum dfu_device_type {
46 struct mmc_internal_data {
50 unsigned int lba_start;
51 unsigned int lba_size;
52 unsigned int lba_blk_size;
54 /* eMMC HW partition access */
62 struct mtd_internal_data {
63 struct mtd_info *info;
68 /* for ubi partition */
72 struct nand_internal_data {
79 /* for nand/ubi use */
83 struct ram_internal_data {
88 struct sf_internal_data {
89 struct spi_flash *dev;
98 struct virt_internal_data {
102 #define DFU_NAME_SIZE 32
103 #ifndef CONFIG_SYS_DFU_DATA_BUF_SIZE
104 #define CONFIG_SYS_DFU_DATA_BUF_SIZE (1024*1024*8) /* 8 MiB */
106 #ifndef CONFIG_SYS_DFU_MAX_FILE_SIZE
107 #define CONFIG_SYS_DFU_MAX_FILE_SIZE CONFIG_SYS_DFU_DATA_BUF_SIZE
109 #ifndef DFU_DEFAULT_POLL_TIMEOUT
110 #define DFU_DEFAULT_POLL_TIMEOUT 0
112 #ifndef DFU_MANIFEST_POLL_TIMEOUT
113 #define DFU_MANIFEST_POLL_TIMEOUT DFU_DEFAULT_POLL_TIMEOUT
117 char name[DFU_NAME_SIZE];
120 enum dfu_device_type dev_type;
121 enum dfu_layout layout;
122 unsigned long max_buf_size;
125 struct mmc_internal_data mmc;
126 struct mtd_internal_data mtd;
127 struct nand_internal_data nand;
128 struct ram_internal_data ram;
129 struct sf_internal_data sf;
130 struct virt_internal_data virt;
133 int (*get_medium_size)(struct dfu_entity *dfu, u64 *size);
135 int (*read_medium)(struct dfu_entity *dfu,
136 u64 offset, void *buf, long *len);
138 int (*write_medium)(struct dfu_entity *dfu,
139 u64 offset, void *buf, long *len);
141 int (*flush_medium)(struct dfu_entity *dfu);
142 unsigned int (*poll_timeout)(struct dfu_entity *dfu);
144 void (*free_entity)(struct dfu_entity *dfu);
146 struct list_head list;
148 /* on the fly state */
158 u32 bad_skip; /* for nand use */
160 unsigned int inited:1;
163 #ifdef CONFIG_SET_DFU_ALT_INFO
165 * set_dfu_alt_info() - set dfu_alt_info environment variable
167 * If CONFIG_SET_DFU_ALT_INFO=y, this board specific function is called to set
168 * environment variable dfu_alt_info.
170 * @interface: dfu interface, e.g. "mmc" or "nand"
171 * @devstr: device number as string
173 void set_dfu_alt_info(char *interface, char *devstr);
177 * dfu_alt_init() - initialize buffer for dfu entities
179 * @num: number of entities
180 * @dfu: on return allocated buffer
181 * Return: 0 on success
183 int dfu_alt_init(int num, struct dfu_entity **dfu);
186 * dfu_alt_add() - add alternate to dfu entity buffer
189 * @interface: dfu interface, e.g. "mmc" or "nand"
190 * @devstr: device number as string
191 * @s: string description of alternate
192 * Return: 0 on success
194 int dfu_alt_add(struct dfu_entity *dfu, char *interface, char *devstr, char *s);
197 * dfu_config_entities() - initialize dfu entitities from envirionment
199 * Initialize the list of dfu entities from environment variable dfu_alt_info.
200 * The list must be freed by calling dfu_free_entities(). This function bypasses
201 * set_dfu_alt_info(). So typically you should use dfu_init_env_entities()
204 * See function :c:func:`dfu_free_entities`
205 * See function :c:func:`dfu_init_env_entities`
207 * @s: string with alternates
208 * @interface: interface, e.g. "mmc" or "nand"
209 * @devstr: device number as string
210 * Return: 0 on success, a negative error code otherwise
212 int dfu_config_entities(char *s, char *interface, char *devstr);
215 * dfu_free_entities() - free the list of dfu entities
217 * Free the internal list of dfu entities.
219 * See function :c:func:`dfu_init_env_entities`
221 void dfu_free_entities(void);
224 * dfu_show_entities() - print DFU alt settings list
226 void dfu_show_entities(void);
229 * dfu_get_alt_number() - get number of alternates
231 * Return: number of alternates in the dfu entities list
233 int dfu_get_alt_number(void);
236 * dfu_get_dev_type() - get string representation for dfu device type
239 * Return: string representation for device type
241 const char *dfu_get_dev_type(enum dfu_device_type type);
244 * dfu_get_layout() - get string describing layout
246 * Internally layouts are represented by enum dfu_device_type values. This
247 * function translates an enum value to a human readable string, e.g. DFU_FS_FAT
248 * is translated to "FAT".
251 * Result: string representation for the layout
253 const char *dfu_get_layout(enum dfu_layout layout);
256 * dfu_get_entity() - get dfu entity for an alternate id
261 struct dfu_entity *dfu_get_entity(int alt);
263 char *dfu_extract_token(char** e, int *n);
266 * dfu_get_alt() - get alternate id for filename
268 * Environment variable dfu_alt_info defines the write destinations (alternates)
269 * for different filenames. This function get the index of the alternate for
270 * a filename. If an absolute filename is provided (starting with '/'), the
271 * directory path is ignored.
274 * Return: id of the alternate or negative error number (-ENODEV)
276 int dfu_get_alt(char *name);
279 * dfu_init_env_entities() - initialize dfu entitities from envirionment
281 * Initialize the list of dfu entities from environment variable dfu_alt_info.
282 * The list must be freed by calling dfu_free_entities().
283 * @interface and @devstr are used to select the relevant set of alternates
284 * from environment variable dfu_alt_info.
286 * If environment variable dfu_alt_info specifies the interface and the device,
287 * use NULL for @interface and @devstr.
289 * See function :c:func:`dfu_free_entities`
291 * @interface: interface, e.g. "mmc" or "nand"
292 * @devstr: device number as string
293 * Return: 0 on success, a negative error code otherwise
295 int dfu_init_env_entities(char *interface, char *devstr);
297 unsigned char *dfu_get_buf(struct dfu_entity *dfu);
298 unsigned char *dfu_free_buf(void);
299 unsigned long dfu_get_buf_size(void);
300 bool dfu_usb_get_reset(void);
302 #ifdef CONFIG_DFU_TIMEOUT
303 unsigned long dfu_get_timeout(void);
304 void dfu_set_timeout(unsigned long);
308 * dfu_read() - read from dfu entity
310 * The block sequence number @blk_seq_num is a 16 bit counter that must be
311 * incremented with each call for the same dfu entity @de.
315 * @size: size of buffer
316 * @blk_seq_num: block sequence number
317 * Return: 0 for success, -1 for error
319 int dfu_read(struct dfu_entity *de, void *buf, int size, int blk_seq_num);
322 * dfu_write() - write to dfu entity
324 * Write the contents of a buffer @buf to the dfu entity @de. After writing
325 * the last block call dfu_flush(). If a file is already loaded completely
326 * into memory it is preferable to use dfu_write_from_mem_addr() which takes
327 * care of blockwise transfer and flushing.
329 * The block sequence number @blk_seq_num is a 16 bit counter that must be
330 * incremented with each call for the same dfu entity @de.
332 * See function :c:func:`dfu_flush`
333 * See function :c:func:`dfu_write_from_mem_addr`
337 * @size: size of buffer
338 * @blk_seq_num: block sequence number
339 * Return: 0 for success, -1 for error
341 int dfu_write(struct dfu_entity *de, void *buf, int size, int blk_seq_num);
344 * dfu_flush() - flush to dfu entity
346 * This function has to be called after writing the last block to the dfu
349 * The block sequence number @blk_seq_num is a 16 bit counter that must be
350 * incremented with each call for the same dfu entity @de.
352 * See function :c:func:`dfu_write`
357 * @blk_seq_num: block sequence number of last write - ignored
358 * Return: 0 for success, -1 for error
360 int dfu_flush(struct dfu_entity *de, void *buf, int size, int blk_seq_num);
363 * dfu_initiated_callback() - weak callback called on DFU transaction start
365 * It is a callback function called by DFU stack when a DFU transaction is
366 * initiated. This function allows to manage some board specific behavior on
369 * @dfu: pointer to the dfu_entity, which should be initialized
371 void dfu_initiated_callback(struct dfu_entity *dfu);
374 * dfu_flush_callback() - weak callback called at the end of the DFU write
376 * It is a callback function called by DFU stack after DFU manifestation.
377 * This function allows to manage some board specific behavior on DFU targets
379 * @dfu: pointer to the dfu_entity, which should be flushed
381 void dfu_flush_callback(struct dfu_entity *dfu);
383 int dfu_transaction_initiate(struct dfu_entity *dfu, bool read);
384 void dfu_transaction_cleanup(struct dfu_entity *dfu);
387 * dfu_defer_flush - pointer to store dfu_entity for deferred flashing.
388 * It should be NULL when not used.
390 extern struct dfu_entity *dfu_defer_flush;
393 * dfu_get_defer_flush() - get current value of dfu_defer_flush pointer
395 * Return: value of the dfu_defer_flush pointer
397 static inline struct dfu_entity *dfu_get_defer_flush(void)
399 return dfu_defer_flush;
403 * dfu_set_defer_flush() - set the dfu_defer_flush pointer
405 * @dfu: pointer to the dfu_entity, which should be written
407 static inline void dfu_set_defer_flush(struct dfu_entity *dfu)
409 dfu_defer_flush = dfu;
413 * dfu_write_from_mem_addr() - write data from memory to DFU managed medium
415 * This function adds support for writing data starting from fixed memory
416 * address (like $loadaddr) to dfu managed medium (e.g. NAND, MMC, file system)
418 * @dfu: dfu entity to which we want to store data
419 * @buf: fixed memory address from where data starts
420 * @size: number of bytes to write
422 * Return: 0 on success, other value on failure
424 int dfu_write_from_mem_addr(struct dfu_entity *dfu, void *buf, int size);
426 /* Device specific */
427 #if CONFIG_IS_ENABLED(DFU_MMC)
428 extern int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *devstr, char *s);
430 static inline int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *devstr,
433 puts("MMC support not available!\n");
438 #if CONFIG_IS_ENABLED(DFU_NAND)
439 extern int dfu_fill_entity_nand(struct dfu_entity *dfu, char *devstr, char *s);
441 static inline int dfu_fill_entity_nand(struct dfu_entity *dfu, char *devstr,
444 puts("NAND support not available!\n");
449 #if CONFIG_IS_ENABLED(DFU_RAM)
450 extern int dfu_fill_entity_ram(struct dfu_entity *dfu, char *devstr, char *s);
452 static inline int dfu_fill_entity_ram(struct dfu_entity *dfu, char *devstr,
455 puts("RAM support not available!\n");
460 #if CONFIG_IS_ENABLED(DFU_SF)
461 extern int dfu_fill_entity_sf(struct dfu_entity *dfu, char *devstr, char *s);
463 static inline int dfu_fill_entity_sf(struct dfu_entity *dfu, char *devstr,
466 puts("SF support not available!\n");
471 #if CONFIG_IS_ENABLED(DFU_MTD)
472 int dfu_fill_entity_mtd(struct dfu_entity *dfu, char *devstr, char *s);
474 static inline int dfu_fill_entity_mtd(struct dfu_entity *dfu, char *devstr,
477 puts("MTD support not available!\n");
482 #ifdef CONFIG_DFU_VIRT
483 int dfu_fill_entity_virt(struct dfu_entity *dfu, char *devstr, char *s);
484 int dfu_write_medium_virt(struct dfu_entity *dfu, u64 offset,
485 void *buf, long *len);
486 int dfu_get_medium_size_virt(struct dfu_entity *dfu, u64 *size);
487 int dfu_read_medium_virt(struct dfu_entity *dfu, u64 offset,
488 void *buf, long *len);
490 static inline int dfu_fill_entity_virt(struct dfu_entity *dfu, char *devstr,
493 puts("VIRT support not available!\n");
498 extern bool dfu_reinit_needed;
501 * dfu_tftp_write() - write TFTP data to DFU medium
503 * This function is storing data received via TFTP on DFU supported medium.
505 * @dfu_entity_name: name of DFU entity to write
506 * @addr: address of data buffer to write
507 * @len: number of bytes
508 * @interface: destination DFU medium (e.g. "mmc")
509 * @devstring: instance number of destination DFU medium (e.g. "1")
511 * Return: 0 on success, otherwise error code
513 #if CONFIG_IS_ENABLED(DFU_TFTP)
514 int dfu_tftp_write(char *dfu_entity_name, unsigned int addr, unsigned int len,
515 char *interface, char *devstring);
517 static inline int dfu_tftp_write(char *dfu_entity_name, unsigned int addr,
518 unsigned int len, char *interface,
521 puts("TFTP write support for DFU not available!\n");
526 int dfu_add(struct usb_configuration *c);
527 #endif /* __DFU_ENTITY_H_ */