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), " 0x%x", (unsigned int)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);