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 __aligned(CONFIG_SYS_CACHELINE_SIZE)
20 dfu_file_buf[CONFIG_SYS_DFU_MAX_FILE_SIZE];
21 static long dfu_file_buf_len;
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)
43 struct mmc *mmc = find_mmc_device(dfu->data.mmc.dev_num);
44 u32 blk_start, blk_count, n = 0;
45 int ret, part_num_bkp = 0;
48 * We must ensure that we work in lba_blk_size chunks, so ALIGN
51 *len = ALIGN(*len, dfu->data.mmc.lba_blk_size);
53 blk_start = dfu->data.mmc.lba_start +
54 (u32)lldiv(offset, dfu->data.mmc.lba_blk_size);
55 blk_count = *len / dfu->data.mmc.lba_blk_size;
56 if (blk_start + blk_count >
57 dfu->data.mmc.lba_start + dfu->data.mmc.lba_size) {
58 puts("Request would exceed designated area!\n");
62 if (dfu->data.mmc.hw_partition >= 0) {
63 part_num_bkp = mmc->part_num;
64 ret = mmc_access_part(dfu, mmc, dfu->data.mmc.hw_partition);
69 debug("%s: %s dev: %d start: %d cnt: %d buf: 0x%p\n", __func__,
70 op == DFU_OP_READ ? "MMC READ" : "MMC WRITE",
71 dfu->data.mmc.dev_num, blk_start, blk_count, buf);
74 n = mmc->block_dev.block_read(dfu->data.mmc.dev_num, blk_start,
78 n = mmc->block_dev.block_write(dfu->data.mmc.dev_num, blk_start,
82 error("Operation not supported\n");
86 error("MMC operation failed");
87 if (dfu->data.mmc.hw_partition >= 0)
88 mmc_access_part(dfu, mmc, part_num_bkp);
92 if (dfu->data.mmc.hw_partition >= 0) {
93 ret = mmc_access_part(dfu, mmc, part_num_bkp);
101 static int mmc_file_buffer(struct dfu_entity *dfu, void *buf, long *len)
103 if (dfu_file_buf_len + *len > CONFIG_SYS_DFU_MAX_FILE_SIZE) {
104 dfu_file_buf_len = 0;
108 /* Add to the current buffer. */
109 memcpy(dfu_file_buf + dfu_file_buf_len, buf, *len);
110 dfu_file_buf_len += *len;
115 static int mmc_file_op(enum dfu_op op, struct dfu_entity *dfu,
116 void *buf, long *len)
118 const char *fsname, *opname;
119 char cmd_buf[DFU_CMD_BUF_SIZE];
123 switch (dfu->layout) {
131 printf("%s: Layout (%s) not (yet) supported!\n", __func__,
132 dfu_get_layout(dfu->layout));
150 sprintf(cmd_buf, "%s%s mmc %d:%d", fsname, opname,
151 dfu->data.mmc.dev, dfu->data.mmc.part);
153 if (op != DFU_OP_SIZE)
154 sprintf(cmd_buf + strlen(cmd_buf), " 0x%x", (unsigned int)buf);
156 sprintf(cmd_buf + strlen(cmd_buf), " %s", dfu->name);
158 if (op == DFU_OP_WRITE)
159 sprintf(cmd_buf + strlen(cmd_buf), " %lx", *len);
161 debug("%s: %s 0x%p\n", __func__, cmd_buf, cmd_buf);
163 ret = run_command(cmd_buf, 0);
165 puts("dfu: Read error!\n");
169 if (op != DFU_OP_WRITE) {
170 str_env = getenv("filesize");
171 if (str_env == NULL) {
172 puts("dfu: Wrong file size!\n");
175 *len = simple_strtoul(str_env, NULL, 16);
181 int dfu_write_medium_mmc(struct dfu_entity *dfu,
182 u64 offset, void *buf, long *len)
186 switch (dfu->layout) {
188 ret = mmc_block_op(DFU_OP_WRITE, dfu, offset, buf, len);
192 ret = mmc_file_buffer(dfu, buf, len);
195 printf("%s: Layout (%s) not (yet) supported!\n", __func__,
196 dfu_get_layout(dfu->layout));
202 int dfu_flush_medium_mmc(struct dfu_entity *dfu)
206 if (dfu->layout != DFU_RAW_ADDR) {
208 ret = mmc_file_op(DFU_OP_WRITE, dfu, &dfu_file_buf,
211 /* Now that we're done */
212 dfu_file_buf_len = 0;
218 long dfu_get_medium_size_mmc(struct dfu_entity *dfu)
223 switch (dfu->layout) {
225 return dfu->data.mmc.lba_size * dfu->data.mmc.lba_blk_size;
228 ret = mmc_file_op(DFU_OP_SIZE, dfu, NULL, &len);
233 printf("%s: Layout (%s) not (yet) supported!\n", __func__,
234 dfu_get_layout(dfu->layout));
239 int dfu_read_medium_mmc(struct dfu_entity *dfu, u64 offset, void *buf,
244 switch (dfu->layout) {
246 ret = mmc_block_op(DFU_OP_READ, dfu, offset, buf, len);
250 ret = mmc_file_op(DFU_OP_READ, dfu, buf, len);
253 printf("%s: Layout (%s) not (yet) supported!\n", __func__,
254 dfu_get_layout(dfu->layout));
261 * @param s Parameter string containing space-separated arguments:
263 * raw (raw read/write)
266 * part (partition image)
268 * lba_start and lba_size, for raw write
269 * mmc_dev and mmc_part, for filesystems and part
271 * mmcpart <num> (access to HW eMMC partitions)
273 int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *devstr, char *s)
275 const char *entity_type;
282 const char **parg = argv;
284 dfu->data.mmc.dev_num = simple_strtoul(devstr, NULL, 10);
286 for (; parg < argv + sizeof(argv) / sizeof(*argv); ++parg) {
287 *parg = strsep(&s, " ");
289 error("Invalid number of arguments.\n");
294 entity_type = argv[0];
296 * Base 0 means we'll accept (prefixed with 0x or 0) base 16, 8,
299 second_arg = simple_strtoul(argv[1], NULL, 0);
300 third_arg = simple_strtoul(argv[2], NULL, 0);
302 mmc = find_mmc_device(dfu->data.mmc.dev_num);
304 error("Couldn't find MMC device no. %d.\n",
305 dfu->data.mmc.dev_num);
310 error("Couldn't init MMC device.\n");
314 dfu->data.mmc.hw_partition = -EINVAL;
315 if (!strcmp(entity_type, "raw")) {
316 dfu->layout = DFU_RAW_ADDR;
317 dfu->data.mmc.lba_start = second_arg;
318 dfu->data.mmc.lba_size = third_arg;
319 dfu->data.mmc.lba_blk_size = mmc->read_bl_len;
322 * Check for an extra entry at dfu_alt_info env variable
323 * specifying the mmc HW defined partition number
326 if (!strcmp(strsep(&s, " "), "mmcpart"))
327 dfu->data.mmc.hw_partition =
328 simple_strtoul(s, NULL, 0);
330 } else if (!strcmp(entity_type, "part")) {
331 disk_partition_t partinfo;
332 block_dev_desc_t *blk_dev = &mmc->block_dev;
333 int mmcdev = second_arg;
334 int mmcpart = third_arg;
336 if (get_partition_info(blk_dev, mmcpart, &partinfo) != 0) {
337 error("Couldn't find part #%d on mmc device #%d\n",
342 dfu->layout = DFU_RAW_ADDR;
343 dfu->data.mmc.lba_start = partinfo.start;
344 dfu->data.mmc.lba_size = partinfo.size;
345 dfu->data.mmc.lba_blk_size = partinfo.blksz;
346 } else if (!strcmp(entity_type, "fat")) {
347 dfu->layout = DFU_FS_FAT;
348 } else if (!strcmp(entity_type, "ext4")) {
349 dfu->layout = DFU_FS_EXT4;
351 error("Memory layout (%s) not supported!\n", entity_type);
355 /* if it's NOT a raw write */
356 if (strcmp(entity_type, "raw")) {
357 dfu->data.mmc.dev = second_arg;
358 dfu->data.mmc.part = third_arg;
361 dfu->dev_type = DFU_DEV_MMC;
362 dfu->get_medium_size = dfu_get_medium_size_mmc;
363 dfu->read_medium = dfu_read_medium_mmc;
364 dfu->write_medium = dfu_write_medium_mmc;
365 dfu->flush_medium = dfu_flush_medium_mmc;