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
;
22 static int mmc_access_part(struct dfu_entity
*dfu
, struct mmc
*mmc
, int part
)
26 if (part
== mmc
->part_num
)
29 ret
= mmc_switch_part(dfu
->data
.mmc
.dev_num
, part
);
31 error("Cannot switch to partition %d\n", part
);
39 static int mmc_block_op(enum dfu_op op
, struct dfu_entity
*dfu
,
40 u64 offset
, void *buf
, long *len
)
43 u32 blk_start
, blk_count
, n
= 0;
44 int ret
, part_num_bkp
= 0;
46 mmc
= find_mmc_device(dfu
->data
.mmc
.dev_num
);
48 error("Device MMC %d - not found!", dfu
->data
.mmc
.dev_num
);
53 * We must ensure that we work in lba_blk_size chunks, so ALIGN
56 *len
= ALIGN(*len
, dfu
->data
.mmc
.lba_blk_size
);
58 blk_start
= dfu
->data
.mmc
.lba_start
+
59 (u32
)lldiv(offset
, dfu
->data
.mmc
.lba_blk_size
);
60 blk_count
= *len
/ dfu
->data
.mmc
.lba_blk_size
;
61 if (blk_start
+ blk_count
>
62 dfu
->data
.mmc
.lba_start
+ dfu
->data
.mmc
.lba_size
) {
63 puts("Request would exceed designated area!\n");
67 if (dfu
->data
.mmc
.hw_partition
>= 0) {
68 part_num_bkp
= mmc
->part_num
;
69 ret
= mmc_access_part(dfu
, mmc
, dfu
->data
.mmc
.hw_partition
);
74 debug("%s: %s dev: %d start: %d cnt: %d buf: 0x%p\n", __func__
,
75 op
== DFU_OP_READ
? "MMC READ" : "MMC WRITE",
76 dfu
->data
.mmc
.dev_num
, blk_start
, blk_count
, buf
);
79 n
= mmc
->block_dev
.block_read(dfu
->data
.mmc
.dev_num
, blk_start
,
83 n
= mmc
->block_dev
.block_write(dfu
->data
.mmc
.dev_num
, blk_start
,
87 error("Operation not supported\n");
91 error("MMC operation failed");
92 if (dfu
->data
.mmc
.hw_partition
>= 0)
93 mmc_access_part(dfu
, mmc
, part_num_bkp
);
97 if (dfu
->data
.mmc
.hw_partition
>= 0) {
98 ret
= mmc_access_part(dfu
, mmc
, part_num_bkp
);
106 static int mmc_file_buffer(struct dfu_entity
*dfu
, void *buf
, long *len
)
108 if (dfu_file_buf_len
+ *len
> CONFIG_SYS_DFU_MAX_FILE_SIZE
) {
109 dfu_file_buf_len
= 0;
113 /* Add to the current buffer. */
114 memcpy(dfu_file_buf
+ dfu_file_buf_len
, buf
, *len
);
115 dfu_file_buf_len
+= *len
;
120 static int mmc_file_op(enum dfu_op op
, struct dfu_entity
*dfu
,
121 void *buf
, long *len
)
123 const char *fsname
, *opname
;
124 char cmd_buf
[DFU_CMD_BUF_SIZE
];
128 switch (dfu
->layout
) {
136 printf("%s: Layout (%s) not (yet) supported!\n", __func__
,
137 dfu_get_layout(dfu
->layout
));
155 sprintf(cmd_buf
, "%s%s mmc %d:%d", fsname
, opname
,
156 dfu
->data
.mmc
.dev
, dfu
->data
.mmc
.part
);
158 if (op
!= DFU_OP_SIZE
)
159 sprintf(cmd_buf
+ strlen(cmd_buf
), " %p", buf
);
161 sprintf(cmd_buf
+ strlen(cmd_buf
), " %s", dfu
->name
);
163 if (op
== DFU_OP_WRITE
)
164 sprintf(cmd_buf
+ strlen(cmd_buf
), " %lx", *len
);
166 debug("%s: %s 0x%p\n", __func__
, cmd_buf
, cmd_buf
);
168 ret
= run_command(cmd_buf
, 0);
170 puts("dfu: Read error!\n");
174 if (op
!= DFU_OP_WRITE
) {
175 str_env
= getenv("filesize");
176 if (str_env
== NULL
) {
177 puts("dfu: Wrong file size!\n");
180 *len
= simple_strtoul(str_env
, NULL
, 16);
186 int dfu_write_medium_mmc(struct dfu_entity
*dfu
,
187 u64 offset
, void *buf
, long *len
)
191 switch (dfu
->layout
) {
193 ret
= mmc_block_op(DFU_OP_WRITE
, dfu
, offset
, buf
, len
);
197 ret
= mmc_file_buffer(dfu
, buf
, len
);
200 printf("%s: Layout (%s) not (yet) supported!\n", __func__
,
201 dfu_get_layout(dfu
->layout
));
207 int dfu_flush_medium_mmc(struct dfu_entity
*dfu
)
211 if (dfu
->layout
!= DFU_RAW_ADDR
) {
213 ret
= mmc_file_op(DFU_OP_WRITE
, dfu
, dfu_file_buf
,
216 /* Now that we're done */
217 dfu_file_buf_len
= 0;
223 long dfu_get_medium_size_mmc(struct dfu_entity
*dfu
)
228 switch (dfu
->layout
) {
230 return dfu
->data
.mmc
.lba_size
* dfu
->data
.mmc
.lba_blk_size
;
233 ret
= mmc_file_op(DFU_OP_SIZE
, dfu
, NULL
, &len
);
238 printf("%s: Layout (%s) not (yet) supported!\n", __func__
,
239 dfu_get_layout(dfu
->layout
));
244 int dfu_read_medium_mmc(struct dfu_entity
*dfu
, u64 offset
, void *buf
,
249 switch (dfu
->layout
) {
251 ret
= mmc_block_op(DFU_OP_READ
, dfu
, offset
, buf
, len
);
255 ret
= mmc_file_op(DFU_OP_READ
, dfu
, buf
, len
);
258 printf("%s: Layout (%s) not (yet) supported!\n", __func__
,
259 dfu_get_layout(dfu
->layout
));
265 void dfu_free_entity_mmc(struct dfu_entity
*dfu
)
274 * @param s Parameter string containing space-separated arguments:
276 * raw (raw read/write)
279 * part (partition image)
281 * lba_start and lba_size, for raw write
282 * mmc_dev and mmc_part, for filesystems and part
284 * mmcpart <num> (access to HW eMMC partitions)
286 int dfu_fill_entity_mmc(struct dfu_entity
*dfu
, char *devstr
, char *s
)
288 const char *entity_type
;
295 const char **parg
= argv
;
297 dfu
->data
.mmc
.dev_num
= simple_strtoul(devstr
, NULL
, 10);
299 for (; parg
< argv
+ sizeof(argv
) / sizeof(*argv
); ++parg
) {
300 *parg
= strsep(&s
, " ");
302 error("Invalid number of arguments.\n");
307 entity_type
= argv
[0];
309 * Base 0 means we'll accept (prefixed with 0x or 0) base 16, 8,
312 second_arg
= simple_strtoul(argv
[1], NULL
, 0);
313 third_arg
= simple_strtoul(argv
[2], NULL
, 0);
315 mmc
= find_mmc_device(dfu
->data
.mmc
.dev_num
);
317 error("Couldn't find MMC device no. %d.\n",
318 dfu
->data
.mmc
.dev_num
);
323 error("Couldn't init MMC device.\n");
327 dfu
->data
.mmc
.hw_partition
= -EINVAL
;
328 if (!strcmp(entity_type
, "raw")) {
329 dfu
->layout
= DFU_RAW_ADDR
;
330 dfu
->data
.mmc
.lba_start
= second_arg
;
331 dfu
->data
.mmc
.lba_size
= third_arg
;
332 dfu
->data
.mmc
.lba_blk_size
= mmc
->read_bl_len
;
335 * Check for an extra entry at dfu_alt_info env variable
336 * specifying the mmc HW defined partition number
339 if (!strcmp(strsep(&s
, " "), "mmcpart"))
340 dfu
->data
.mmc
.hw_partition
=
341 simple_strtoul(s
, NULL
, 0);
343 } else if (!strcmp(entity_type
, "part")) {
344 disk_partition_t partinfo
;
345 block_dev_desc_t
*blk_dev
= &mmc
->block_dev
;
346 int mmcdev
= second_arg
;
347 int mmcpart
= third_arg
;
349 if (get_partition_info(blk_dev
, mmcpart
, &partinfo
) != 0) {
350 error("Couldn't find part #%d on mmc device #%d\n",
355 dfu
->layout
= DFU_RAW_ADDR
;
356 dfu
->data
.mmc
.lba_start
= partinfo
.start
;
357 dfu
->data
.mmc
.lba_size
= partinfo
.size
;
358 dfu
->data
.mmc
.lba_blk_size
= partinfo
.blksz
;
359 } else if (!strcmp(entity_type
, "fat")) {
360 dfu
->layout
= DFU_FS_FAT
;
361 } else if (!strcmp(entity_type
, "ext4")) {
362 dfu
->layout
= DFU_FS_EXT4
;
364 error("Memory layout (%s) not supported!\n", entity_type
);
368 /* if it's NOT a raw write */
369 if (strcmp(entity_type
, "raw")) {
370 dfu
->data
.mmc
.dev
= second_arg
;
371 dfu
->data
.mmc
.part
= third_arg
;
374 dfu
->dev_type
= DFU_DEV_MMC
;
375 dfu
->get_medium_size
= dfu_get_medium_size_mmc
;
376 dfu
->read_medium
= dfu_read_medium_mmc
;
377 dfu
->write_medium
= dfu_write_medium_mmc
;
378 dfu
->flush_medium
= dfu_flush_medium_mmc
;
380 dfu
->free_entity
= dfu_free_entity_mmc
;
382 /* Check if file buffer is ready */
384 dfu_file_buf
= memalign(CONFIG_SYS_CACHELINE_SIZE
,
385 CONFIG_SYS_DFU_MAX_FILE_SIZE
);
387 error("Could not memalign 0x%x bytes",
388 CONFIG_SYS_DFU_MAX_FILE_SIZE
);