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_block_op(enum dfu_op op
, struct dfu_entity
*dfu
,
24 u64 offset
, void *buf
, long *len
)
27 u32 blk_start
, blk_count
, n
= 0;
28 int ret
, part_num_bkp
= 0;
30 mmc
= find_mmc_device(dfu
->data
.mmc
.dev_num
);
32 error("Device MMC %d - not found!", dfu
->data
.mmc
.dev_num
);
37 * We must ensure that we work in lba_blk_size chunks, so ALIGN
40 *len
= ALIGN(*len
, dfu
->data
.mmc
.lba_blk_size
);
42 blk_start
= dfu
->data
.mmc
.lba_start
+
43 (u32
)lldiv(offset
, dfu
->data
.mmc
.lba_blk_size
);
44 blk_count
= *len
/ dfu
->data
.mmc
.lba_blk_size
;
45 if (blk_start
+ blk_count
>
46 dfu
->data
.mmc
.lba_start
+ dfu
->data
.mmc
.lba_size
) {
47 puts("Request would exceed designated area!\n");
51 if (dfu
->data
.mmc
.hw_partition
>= 0) {
52 part_num_bkp
= mmc
->block_dev
.hwpart
;
53 ret
= blk_select_hwpart_devnum(IF_TYPE_MMC
,
54 dfu
->data
.mmc
.dev_num
,
55 dfu
->data
.mmc
.hw_partition
);
60 debug("%s: %s dev: %d start: %d cnt: %d buf: 0x%p\n", __func__
,
61 op
== DFU_OP_READ
? "MMC READ" : "MMC WRITE",
62 dfu
->data
.mmc
.dev_num
, blk_start
, blk_count
, buf
);
65 n
= mmc
->block_dev
.block_read(&mmc
->block_dev
, blk_start
,
69 n
= mmc
->block_dev
.block_write(&mmc
->block_dev
, blk_start
,
73 error("Operation not supported\n");
77 error("MMC operation failed");
78 if (dfu
->data
.mmc
.hw_partition
>= 0)
79 blk_select_hwpart_devnum(IF_TYPE_MMC
,
80 dfu
->data
.mmc
.dev_num
,
85 if (dfu
->data
.mmc
.hw_partition
>= 0) {
86 ret
= blk_select_hwpart_devnum(IF_TYPE_MMC
,
87 dfu
->data
.mmc
.dev_num
,
96 static int mmc_file_buffer(struct dfu_entity
*dfu
, void *buf
, long *len
)
98 if (dfu_file_buf_len
+ *len
> CONFIG_SYS_DFU_MAX_FILE_SIZE
) {
103 /* Add to the current buffer. */
104 memcpy(dfu_file_buf
+ dfu_file_buf_len
, buf
, *len
);
105 dfu_file_buf_len
+= *len
;
110 static int mmc_file_op(enum dfu_op op
, struct dfu_entity
*dfu
,
111 void *buf
, long *len
)
113 const char *fsname
, *opname
;
114 char cmd_buf
[DFU_CMD_BUF_SIZE
];
118 switch (dfu
->layout
) {
126 printf("%s: Layout (%s) not (yet) supported!\n", __func__
,
127 dfu_get_layout(dfu
->layout
));
145 sprintf(cmd_buf
, "%s%s mmc %d:%d", fsname
, opname
,
146 dfu
->data
.mmc
.dev
, dfu
->data
.mmc
.part
);
148 if (op
!= DFU_OP_SIZE
)
149 sprintf(cmd_buf
+ strlen(cmd_buf
), " %p", buf
);
151 sprintf(cmd_buf
+ strlen(cmd_buf
), " %s", dfu
->name
);
153 if (op
== DFU_OP_WRITE
)
154 sprintf(cmd_buf
+ strlen(cmd_buf
), " %lx", *len
);
156 debug("%s: %s 0x%p\n", __func__
, cmd_buf
, cmd_buf
);
158 ret
= run_command(cmd_buf
, 0);
160 puts("dfu: Read error!\n");
164 if (op
!= DFU_OP_WRITE
) {
165 str_env
= getenv("filesize");
166 if (str_env
== NULL
) {
167 puts("dfu: Wrong file size!\n");
170 *len
= simple_strtoul(str_env
, NULL
, 16);
176 int dfu_write_medium_mmc(struct dfu_entity
*dfu
,
177 u64 offset
, void *buf
, long *len
)
181 switch (dfu
->layout
) {
183 ret
= mmc_block_op(DFU_OP_WRITE
, dfu
, offset
, buf
, len
);
187 ret
= mmc_file_buffer(dfu
, buf
, len
);
190 printf("%s: Layout (%s) not (yet) supported!\n", __func__
,
191 dfu_get_layout(dfu
->layout
));
197 int dfu_flush_medium_mmc(struct dfu_entity
*dfu
)
201 if (dfu
->layout
!= DFU_RAW_ADDR
) {
203 ret
= mmc_file_op(DFU_OP_WRITE
, dfu
, dfu_file_buf
,
206 /* Now that we're done */
207 dfu_file_buf_len
= 0;
213 long dfu_get_medium_size_mmc(struct dfu_entity
*dfu
)
218 switch (dfu
->layout
) {
220 return dfu
->data
.mmc
.lba_size
* dfu
->data
.mmc
.lba_blk_size
;
223 dfu_file_buf_filled
= -1;
224 ret
= mmc_file_op(DFU_OP_SIZE
, dfu
, NULL
, &len
);
227 if (len
> CONFIG_SYS_DFU_MAX_FILE_SIZE
)
231 printf("%s: Layout (%s) not (yet) supported!\n", __func__
,
232 dfu_get_layout(dfu
->layout
));
237 static int mmc_file_unbuffer(struct dfu_entity
*dfu
, u64 offset
, void *buf
,
243 if (dfu_file_buf_filled
== -1) {
244 ret
= mmc_file_op(DFU_OP_READ
, dfu
, dfu_file_buf
, &file_len
);
247 dfu_file_buf_filled
= file_len
;
249 if (offset
+ *len
> dfu_file_buf_filled
)
252 /* Add to the current buffer. */
253 memcpy(buf
, dfu_file_buf
+ offset
, *len
);
258 int dfu_read_medium_mmc(struct dfu_entity
*dfu
, u64 offset
, void *buf
,
263 switch (dfu
->layout
) {
265 ret
= mmc_block_op(DFU_OP_READ
, dfu
, offset
, buf
, len
);
269 ret
= mmc_file_unbuffer(dfu
, offset
, buf
, len
);
272 printf("%s: Layout (%s) not (yet) supported!\n", __func__
,
273 dfu_get_layout(dfu
->layout
));
279 void dfu_free_entity_mmc(struct dfu_entity
*dfu
)
288 * @param s Parameter string containing space-separated arguments:
290 * raw (raw read/write)
293 * part (partition image)
295 * lba_start and lba_size, for raw write
296 * mmc_dev and mmc_part, for filesystems and part
298 * mmcpart <num> (access to HW eMMC partitions)
300 int dfu_fill_entity_mmc(struct dfu_entity
*dfu
, char *devstr
, char *s
)
302 const char *entity_type
;
309 const char **parg
= argv
;
311 dfu
->data
.mmc
.dev_num
= simple_strtoul(devstr
, NULL
, 10);
313 for (; parg
< argv
+ sizeof(argv
) / sizeof(*argv
); ++parg
) {
314 *parg
= strsep(&s
, " ");
316 error("Invalid number of arguments.\n");
321 entity_type
= argv
[0];
323 * Base 0 means we'll accept (prefixed with 0x or 0) base 16, 8,
326 second_arg
= simple_strtoul(argv
[1], NULL
, 0);
327 third_arg
= simple_strtoul(argv
[2], NULL
, 0);
329 mmc
= find_mmc_device(dfu
->data
.mmc
.dev_num
);
331 error("Couldn't find MMC device no. %d.\n",
332 dfu
->data
.mmc
.dev_num
);
337 error("Couldn't init MMC device.\n");
341 dfu
->data
.mmc
.hw_partition
= -EINVAL
;
342 if (!strcmp(entity_type
, "raw")) {
343 dfu
->layout
= DFU_RAW_ADDR
;
344 dfu
->data
.mmc
.lba_start
= second_arg
;
345 dfu
->data
.mmc
.lba_size
= third_arg
;
346 dfu
->data
.mmc
.lba_blk_size
= mmc
->read_bl_len
;
349 * Check for an extra entry at dfu_alt_info env variable
350 * specifying the mmc HW defined partition number
353 if (!strcmp(strsep(&s
, " "), "mmcpart"))
354 dfu
->data
.mmc
.hw_partition
=
355 simple_strtoul(s
, NULL
, 0);
357 } else if (!strcmp(entity_type
, "part")) {
358 disk_partition_t partinfo
;
359 struct blk_desc
*blk_dev
= &mmc
->block_dev
;
360 int mmcdev
= second_arg
;
361 int mmcpart
= third_arg
;
363 if (part_get_info(blk_dev
, mmcpart
, &partinfo
) != 0) {
364 error("Couldn't find part #%d on mmc device #%d\n",
369 dfu
->layout
= DFU_RAW_ADDR
;
370 dfu
->data
.mmc
.lba_start
= partinfo
.start
;
371 dfu
->data
.mmc
.lba_size
= partinfo
.size
;
372 dfu
->data
.mmc
.lba_blk_size
= partinfo
.blksz
;
373 } else if (!strcmp(entity_type
, "fat")) {
374 dfu
->layout
= DFU_FS_FAT
;
375 } else if (!strcmp(entity_type
, "ext4")) {
376 dfu
->layout
= DFU_FS_EXT4
;
378 error("Memory layout (%s) not supported!\n", entity_type
);
382 /* if it's NOT a raw write */
383 if (strcmp(entity_type
, "raw")) {
384 dfu
->data
.mmc
.dev
= second_arg
;
385 dfu
->data
.mmc
.part
= third_arg
;
388 dfu
->dev_type
= DFU_DEV_MMC
;
389 dfu
->get_medium_size
= dfu_get_medium_size_mmc
;
390 dfu
->read_medium
= dfu_read_medium_mmc
;
391 dfu
->write_medium
= dfu_write_medium_mmc
;
392 dfu
->flush_medium
= dfu_flush_medium_mmc
;
394 dfu
->free_entity
= dfu_free_entity_mmc
;
396 /* Check if file buffer is ready */
398 dfu_file_buf
= memalign(CONFIG_SYS_CACHELINE_SIZE
,
399 CONFIG_SYS_DFU_MAX_FILE_SIZE
);
401 error("Could not memalign 0x%x bytes",
402 CONFIG_SYS_DFU_MAX_FILE_SIZE
);