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+
21 static unsigned char __aligned(CONFIG_SYS_CACHELINE_SIZE
)
22 dfu_file_buf
[CONFIG_SYS_DFU_MAX_FILE_SIZE
];
23 static long dfu_file_buf_len
;
25 static int mmc_block_op(enum dfu_mmc_op op
, struct dfu_entity
*dfu
,
26 u64 offset
, void *buf
, long *len
)
28 char cmd_buf
[DFU_CMD_BUF_SIZE
];
29 u32 blk_start
, blk_count
;
32 * We must ensure that we work in lba_blk_size chunks, so ALIGN
35 *len
= ALIGN(*len
, dfu
->data
.mmc
.lba_blk_size
);
37 blk_start
= dfu
->data
.mmc
.lba_start
+
38 (u32
)lldiv(offset
, dfu
->data
.mmc
.lba_blk_size
);
39 blk_count
= *len
/ dfu
->data
.mmc
.lba_blk_size
;
40 if (blk_start
+ blk_count
>
41 dfu
->data
.mmc
.lba_start
+ dfu
->data
.mmc
.lba_size
) {
42 puts("Request would exceed designated area!\n");
46 sprintf(cmd_buf
, "mmc %s %p %x %x",
47 op
== DFU_OP_READ
? "read" : "write",
48 buf
, blk_start
, blk_count
);
50 debug("%s: %s 0x%p\n", __func__
, cmd_buf
, cmd_buf
);
51 return run_command(cmd_buf
, 0);
54 static int mmc_file_buffer(struct dfu_entity
*dfu
, void *buf
, long *len
)
56 if (dfu_file_buf_len
+ *len
> CONFIG_SYS_DFU_MAX_FILE_SIZE
) {
61 /* Add to the current buffer. */
62 memcpy(dfu_file_buf
+ dfu_file_buf_len
, buf
, *len
);
63 dfu_file_buf_len
+= *len
;
68 static int mmc_file_op(enum dfu_mmc_op op
, struct dfu_entity
*dfu
,
71 char cmd_buf
[DFU_CMD_BUF_SIZE
];
75 switch (dfu
->layout
) {
77 sprintf(cmd_buf
, "fat%s mmc %d:%d 0x%x %s",
78 op
== DFU_OP_READ
? "load" : "write",
79 dfu
->data
.mmc
.dev
, dfu
->data
.mmc
.part
,
80 (unsigned int) buf
, dfu
->name
);
81 if (op
== DFU_OP_WRITE
)
82 sprintf(cmd_buf
+ strlen(cmd_buf
), " %lx", *len
);
85 sprintf(cmd_buf
, "ext4%s mmc %d:%d 0x%x /%s",
86 op
== DFU_OP_READ
? "load" : "write",
87 dfu
->data
.mmc
.dev
, dfu
->data
.mmc
.part
,
88 (unsigned int) buf
, dfu
->name
);
89 if (op
== DFU_OP_WRITE
)
90 sprintf(cmd_buf
+ strlen(cmd_buf
), " %ld", *len
);
93 printf("%s: Layout (%s) not (yet) supported!\n", __func__
,
94 dfu_get_layout(dfu
->layout
));
98 debug("%s: %s 0x%p\n", __func__
, cmd_buf
, cmd_buf
);
100 ret
= run_command(cmd_buf
, 0);
102 puts("dfu: Read error!\n");
106 if (dfu
->layout
!= DFU_RAW_ADDR
&& op
== DFU_OP_READ
) {
107 str_env
= getenv("filesize");
108 if (str_env
== NULL
) {
109 puts("dfu: Wrong file size!\n");
112 *len
= simple_strtoul(str_env
, NULL
, 16);
118 int dfu_write_medium_mmc(struct dfu_entity
*dfu
,
119 u64 offset
, void *buf
, long *len
)
123 switch (dfu
->layout
) {
125 ret
= mmc_block_op(DFU_OP_WRITE
, dfu
, offset
, buf
, len
);
129 ret
= mmc_file_buffer(dfu
, buf
, len
);
132 printf("%s: Layout (%s) not (yet) supported!\n", __func__
,
133 dfu_get_layout(dfu
->layout
));
139 int dfu_flush_medium_mmc(struct dfu_entity
*dfu
)
143 if (dfu
->layout
!= DFU_RAW_ADDR
) {
145 ret
= mmc_file_op(DFU_OP_WRITE
, dfu
, &dfu_file_buf
,
148 /* Now that we're done */
149 dfu_file_buf_len
= 0;
155 int dfu_read_medium_mmc(struct dfu_entity
*dfu
, u64 offset
, void *buf
,
160 switch (dfu
->layout
) {
162 ret
= mmc_block_op(DFU_OP_READ
, dfu
, offset
, buf
, len
);
166 ret
= mmc_file_op(DFU_OP_READ
, dfu
, buf
, len
);
169 printf("%s: Layout (%s) not (yet) supported!\n", __func__
,
170 dfu_get_layout(dfu
->layout
));
176 int dfu_fill_entity_mmc(struct dfu_entity
*dfu
, char *s
)
180 block_dev_desc_t
*blk_dev
;
181 disk_partition_t partinfo
;
184 dfu
->dev_type
= DFU_DEV_MMC
;
185 st
= strsep(&s
, " ");
186 if (!strcmp(st
, "mmc")) {
187 dfu
->layout
= DFU_RAW_ADDR
;
188 dfu
->data
.mmc
.lba_start
= simple_strtoul(s
, &s
, 16);
189 dfu
->data
.mmc
.lba_size
= simple_strtoul(++s
, &s
, 16);
190 dfu
->data
.mmc
.lba_blk_size
= get_mmc_blk_size(dfu
->dev_num
);
191 } else if (!strcmp(st
, "fat")) {
192 dfu
->layout
= DFU_FS_FAT
;
193 } else if (!strcmp(st
, "ext4")) {
194 dfu
->layout
= DFU_FS_EXT4
;
195 } else if (!strcmp(st
, "part")) {
197 dfu
->layout
= DFU_RAW_ADDR
;
199 dev
= simple_strtoul(s
, &s
, 10);
201 part
= simple_strtoul(s
, &s
, 10);
203 mmc
= find_mmc_device(dev
);
204 if (mmc
== NULL
|| mmc_init(mmc
)) {
205 printf("%s: could not find mmc device #%d!\n",
210 blk_dev
= &mmc
->block_dev
;
211 if (get_partition_info(blk_dev
, part
, &partinfo
) != 0) {
212 printf("%s: could not find partition #%d on mmc device #%d!\n",
213 __func__
, part
, dev
);
217 dfu
->data
.mmc
.lba_start
= partinfo
.start
;
218 dfu
->data
.mmc
.lba_size
= partinfo
.size
;
219 dfu
->data
.mmc
.lba_blk_size
= partinfo
.blksz
;
222 printf("%s: Memory layout (%s) not supported!\n", __func__
, st
);
226 if (dfu
->layout
== DFU_FS_EXT4
|| dfu
->layout
== DFU_FS_FAT
) {
227 dfu
->data
.mmc
.dev
= simple_strtoul(s
, &s
, 10);
228 dfu
->data
.mmc
.part
= simple_strtoul(++s
, &s
, 10);
231 dfu
->read_medium
= dfu_read_medium_mmc
;
232 dfu
->write_medium
= dfu_write_medium_mmc
;
233 dfu
->flush_medium
= dfu_flush_medium_mmc
;