2 * dfu.c -- DFU back-end routines
4 * Copyright (C) 2012 Samsung Electronics
5 * author: Lukasz Majewski <l.majewski@samsung.com>
7 * SPDX-License-Identifier: GPL-2.0+
19 static unsigned char *dfu_file_buf
;
20 static long dfu_file_buf_len
;
21 static long dfu_file_buf_filled
;
23 static int mmc_access_part(struct dfu_entity
*dfu
, struct mmc
*mmc
, int part
)
27 if (part
== mmc
->part_num
)
30 ret
= mmc_switch_part(dfu
->data
.mmc
.dev_num
, part
);
32 error("Cannot switch to partition %d\n", part
);
40 static int mmc_block_op(enum dfu_op op
, struct dfu_entity
*dfu
,
41 u64 offset
, void *buf
, long *len
)
44 u32 blk_start
, blk_count
, n
= 0;
45 int ret
, part_num_bkp
= 0;
47 mmc
= find_mmc_device(dfu
->data
.mmc
.dev_num
);
49 error("Device MMC %d - not found!", dfu
->data
.mmc
.dev_num
);
54 * We must ensure that we work in lba_blk_size chunks, so ALIGN
57 *len
= ALIGN(*len
, dfu
->data
.mmc
.lba_blk_size
);
59 blk_start
= dfu
->data
.mmc
.lba_start
+
60 (u32
)lldiv(offset
, dfu
->data
.mmc
.lba_blk_size
);
61 blk_count
= *len
/ dfu
->data
.mmc
.lba_blk_size
;
62 if (blk_start
+ blk_count
>
63 dfu
->data
.mmc
.lba_start
+ dfu
->data
.mmc
.lba_size
) {
64 puts("Request would exceed designated area!\n");
68 if (dfu
->data
.mmc
.hw_partition
>= 0) {
69 part_num_bkp
= mmc
->part_num
;
70 ret
= mmc_access_part(dfu
, mmc
, dfu
->data
.mmc
.hw_partition
);
75 debug("%s: %s dev: %d start: %d cnt: %d buf: 0x%p\n", __func__
,
76 op
== DFU_OP_READ
? "MMC READ" : "MMC WRITE",
77 dfu
->data
.mmc
.dev_num
, blk_start
, blk_count
, buf
);
80 n
= mmc
->block_dev
.block_read(&mmc
->block_dev
, blk_start
,
84 n
= mmc
->block_dev
.block_write(&mmc
->block_dev
, blk_start
,
88 error("Operation not supported\n");
92 error("MMC operation failed");
93 if (dfu
->data
.mmc
.hw_partition
>= 0)
94 mmc_access_part(dfu
, mmc
, part_num_bkp
);
98 if (dfu
->data
.mmc
.hw_partition
>= 0) {
99 ret
= mmc_access_part(dfu
, mmc
, part_num_bkp
);
107 static int mmc_file_buffer(struct dfu_entity
*dfu
, void *buf
, long *len
)
109 if (dfu_file_buf_len
+ *len
> CONFIG_SYS_DFU_MAX_FILE_SIZE
) {
110 dfu_file_buf_len
= 0;
114 /* Add to the current buffer. */
115 memcpy(dfu_file_buf
+ dfu_file_buf_len
, buf
, *len
);
116 dfu_file_buf_len
+= *len
;
121 static int mmc_file_op(enum dfu_op op
, struct dfu_entity
*dfu
,
122 void *buf
, long *len
)
124 const char *fsname
, *opname
;
125 char cmd_buf
[DFU_CMD_BUF_SIZE
];
129 switch (dfu
->layout
) {
137 printf("%s: Layout (%s) not (yet) supported!\n", __func__
,
138 dfu_get_layout(dfu
->layout
));
156 sprintf(cmd_buf
, "%s%s mmc %d:%d", fsname
, opname
,
157 dfu
->data
.mmc
.dev
, dfu
->data
.mmc
.part
);
159 if (op
!= DFU_OP_SIZE
)
160 sprintf(cmd_buf
+ strlen(cmd_buf
), " %p", buf
);
162 sprintf(cmd_buf
+ strlen(cmd_buf
), " %s", dfu
->name
);
164 if (op
== DFU_OP_WRITE
)
165 sprintf(cmd_buf
+ strlen(cmd_buf
), " %lx", *len
);
167 debug("%s: %s 0x%p\n", __func__
, cmd_buf
, cmd_buf
);
169 ret
= run_command(cmd_buf
, 0);
171 puts("dfu: Read error!\n");
175 if (op
!= DFU_OP_WRITE
) {
176 str_env
= getenv("filesize");
177 if (str_env
== NULL
) {
178 puts("dfu: Wrong file size!\n");
181 *len
= simple_strtoul(str_env
, NULL
, 16);
187 int dfu_write_medium_mmc(struct dfu_entity
*dfu
,
188 u64 offset
, void *buf
, long *len
)
192 switch (dfu
->layout
) {
194 ret
= mmc_block_op(DFU_OP_WRITE
, dfu
, offset
, buf
, len
);
198 ret
= mmc_file_buffer(dfu
, buf
, len
);
201 printf("%s: Layout (%s) not (yet) supported!\n", __func__
,
202 dfu_get_layout(dfu
->layout
));
208 int dfu_flush_medium_mmc(struct dfu_entity
*dfu
)
212 if (dfu
->layout
!= DFU_RAW_ADDR
) {
214 ret
= mmc_file_op(DFU_OP_WRITE
, dfu
, dfu_file_buf
,
217 /* Now that we're done */
218 dfu_file_buf_len
= 0;
224 long dfu_get_medium_size_mmc(struct dfu_entity
*dfu
)
229 switch (dfu
->layout
) {
231 return dfu
->data
.mmc
.lba_size
* dfu
->data
.mmc
.lba_blk_size
;
234 dfu_file_buf_filled
= -1;
235 ret
= mmc_file_op(DFU_OP_SIZE
, dfu
, NULL
, &len
);
238 if (len
> CONFIG_SYS_DFU_MAX_FILE_SIZE
)
242 printf("%s: Layout (%s) not (yet) supported!\n", __func__
,
243 dfu_get_layout(dfu
->layout
));
248 static int mmc_file_unbuffer(struct dfu_entity
*dfu
, u64 offset
, void *buf
,
254 if (dfu_file_buf_filled
== -1) {
255 ret
= mmc_file_op(DFU_OP_READ
, dfu
, dfu_file_buf
, &file_len
);
258 dfu_file_buf_filled
= file_len
;
260 if (offset
+ *len
> dfu_file_buf_filled
)
263 /* Add to the current buffer. */
264 memcpy(buf
, dfu_file_buf
+ offset
, *len
);
269 int dfu_read_medium_mmc(struct dfu_entity
*dfu
, u64 offset
, void *buf
,
274 switch (dfu
->layout
) {
276 ret
= mmc_block_op(DFU_OP_READ
, dfu
, offset
, buf
, len
);
280 ret
= mmc_file_unbuffer(dfu
, offset
, buf
, len
);
283 printf("%s: Layout (%s) not (yet) supported!\n", __func__
,
284 dfu_get_layout(dfu
->layout
));
290 void dfu_free_entity_mmc(struct dfu_entity
*dfu
)
299 * @param s Parameter string containing space-separated arguments:
301 * raw (raw read/write)
304 * part (partition image)
306 * lba_start and lba_size, for raw write
307 * mmc_dev and mmc_part, for filesystems and part
309 * mmcpart <num> (access to HW eMMC partitions)
311 int dfu_fill_entity_mmc(struct dfu_entity
*dfu
, char *devstr
, char *s
)
313 const char *entity_type
;
320 const char **parg
= argv
;
322 dfu
->data
.mmc
.dev_num
= simple_strtoul(devstr
, NULL
, 10);
324 for (; parg
< argv
+ sizeof(argv
) / sizeof(*argv
); ++parg
) {
325 *parg
= strsep(&s
, " ");
327 error("Invalid number of arguments.\n");
332 entity_type
= argv
[0];
334 * Base 0 means we'll accept (prefixed with 0x or 0) base 16, 8,
337 second_arg
= simple_strtoul(argv
[1], NULL
, 0);
338 third_arg
= simple_strtoul(argv
[2], NULL
, 0);
340 mmc
= find_mmc_device(dfu
->data
.mmc
.dev_num
);
342 error("Couldn't find MMC device no. %d.\n",
343 dfu
->data
.mmc
.dev_num
);
348 error("Couldn't init MMC device.\n");
352 dfu
->data
.mmc
.hw_partition
= -EINVAL
;
353 if (!strcmp(entity_type
, "raw")) {
354 dfu
->layout
= DFU_RAW_ADDR
;
355 dfu
->data
.mmc
.lba_start
= second_arg
;
356 dfu
->data
.mmc
.lba_size
= third_arg
;
357 dfu
->data
.mmc
.lba_blk_size
= mmc
->read_bl_len
;
360 * Check for an extra entry at dfu_alt_info env variable
361 * specifying the mmc HW defined partition number
364 if (!strcmp(strsep(&s
, " "), "mmcpart"))
365 dfu
->data
.mmc
.hw_partition
=
366 simple_strtoul(s
, NULL
, 0);
368 } else if (!strcmp(entity_type
, "part")) {
369 disk_partition_t partinfo
;
370 block_dev_desc_t
*blk_dev
= &mmc
->block_dev
;
371 int mmcdev
= second_arg
;
372 int mmcpart
= third_arg
;
374 if (get_partition_info(blk_dev
, mmcpart
, &partinfo
) != 0) {
375 error("Couldn't find part #%d on mmc device #%d\n",
380 dfu
->layout
= DFU_RAW_ADDR
;
381 dfu
->data
.mmc
.lba_start
= partinfo
.start
;
382 dfu
->data
.mmc
.lba_size
= partinfo
.size
;
383 dfu
->data
.mmc
.lba_blk_size
= partinfo
.blksz
;
384 } else if (!strcmp(entity_type
, "fat")) {
385 dfu
->layout
= DFU_FS_FAT
;
386 } else if (!strcmp(entity_type
, "ext4")) {
387 dfu
->layout
= DFU_FS_EXT4
;
389 error("Memory layout (%s) not supported!\n", entity_type
);
393 /* if it's NOT a raw write */
394 if (strcmp(entity_type
, "raw")) {
395 dfu
->data
.mmc
.dev
= second_arg
;
396 dfu
->data
.mmc
.part
= third_arg
;
399 dfu
->dev_type
= DFU_DEV_MMC
;
400 dfu
->get_medium_size
= dfu_get_medium_size_mmc
;
401 dfu
->read_medium
= dfu_read_medium_mmc
;
402 dfu
->write_medium
= dfu_write_medium_mmc
;
403 dfu
->flush_medium
= dfu_flush_medium_mmc
;
405 dfu
->free_entity
= dfu_free_entity_mmc
;
407 /* Check if file buffer is ready */
409 dfu_file_buf
= memalign(CONFIG_SYS_CACHELINE_SIZE
,
410 CONFIG_SYS_DFU_MAX_FILE_SIZE
);
412 error("Could not memalign 0x%x bytes",
413 CONFIG_SYS_DFU_MAX_FILE_SIZE
);