[people/ms/u-boot.git] / drivers / dfu / dfu_mmc.c

/*
 * dfu.c -- DFU back-end routines
 *
 * Copyright (C) 2012 Samsung Electronics
 * author: Lukasz Majewski <l.majewski@samsung.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <malloc.h>
#include <errno.h>
#include <div64.h>
#include <dfu.h>
#include <ext4fs.h>
#include <fat.h>
#include <mmc.h>

static unsigned char *dfu_file_buf;
static long dfu_file_buf_len;
static long dfu_file_buf_filled;

static int mmc_block_op(enum dfu_op op, struct dfu_entity *dfu,
			u64 offset, void *buf, long *len)
{
	struct mmc *mmc;
	u32 blk_start, blk_count, n = 0;
	int ret, part_num_bkp = 0;

	mmc = find_mmc_device(dfu->data.mmc.dev_num);
	if (!mmc) {
		error("Device MMC %d - not found!", dfu->data.mmc.dev_num);
		return -ENODEV;
	}

	/*
	 * We must ensure that we work in lba_blk_size chunks, so ALIGN
	 * this value.
	 */
	*len = ALIGN(*len, dfu->data.mmc.lba_blk_size);

	blk_start = dfu->data.mmc.lba_start +
			(u32)lldiv(offset, dfu->data.mmc.lba_blk_size);
	blk_count = *len / dfu->data.mmc.lba_blk_size;
	if (blk_start + blk_count >
			dfu->data.mmc.lba_start + dfu->data.mmc.lba_size) {
		puts("Request would exceed designated area!\n");
		return -EINVAL;
	}

	if (dfu->data.mmc.hw_partition >= 0) {
		part_num_bkp = mmc_get_blk_desc(mmc)->hwpart;
		ret = blk_select_hwpart_devnum(IF_TYPE_MMC,
					       dfu->data.mmc.dev_num,
					       dfu->data.mmc.hw_partition);
		if (ret)
			return ret;
	}

	debug("%s: %s dev: %d start: %d cnt: %d buf: 0x%p\n", __func__,
	      op == DFU_OP_READ ? "MMC READ" : "MMC WRITE",
	      dfu->data.mmc.dev_num, blk_start, blk_count, buf);
	switch (op) {
	case DFU_OP_READ:
		n = blk_dread(mmc_get_blk_desc(mmc), blk_start, blk_count, buf);
		break;
	case DFU_OP_WRITE:
		n = blk_dwrite(mmc_get_blk_desc(mmc), blk_start, blk_count,
			       buf);
		break;
	default:
		error("Operation not supported\n");
	}

	if (n != blk_count) {
		error("MMC operation failed");
		if (dfu->data.mmc.hw_partition >= 0)
			blk_select_hwpart_devnum(IF_TYPE_MMC,
						 dfu->data.mmc.dev_num,
						 part_num_bkp);
		return -EIO;
	}

	if (dfu->data.mmc.hw_partition >= 0) {
		ret = blk_select_hwpart_devnum(IF_TYPE_MMC,
					       dfu->data.mmc.dev_num,
					       part_num_bkp);
		if (ret)
			return ret;
	}

	return 0;
}

static int mmc_file_buffer(struct dfu_entity *dfu, void *buf, long *len)
{
	if (dfu_file_buf_len + *len > CONFIG_SYS_DFU_MAX_FILE_SIZE) {
		dfu_file_buf_len = 0;
		return -EINVAL;
	}

	/* Add to the current buffer. */
	memcpy(dfu_file_buf + dfu_file_buf_len, buf, *len);
	dfu_file_buf_len += *len;

	return 0;
}

static int mmc_file_op(enum dfu_op op, struct dfu_entity *dfu,
			void *buf, long *len)
{
	const char *fsname, *opname;
	char cmd_buf[DFU_CMD_BUF_SIZE];
	char *str_env;
	int ret;

	switch (dfu->layout) {
	case DFU_FS_FAT:
		fsname = "fat";
		break;
	case DFU_FS_EXT4:
		fsname = "ext4";
		break;
	default:
		printf("%s: Layout (%s) not (yet) supported!\n", __func__,
		       dfu_get_layout(dfu->layout));
		return -1;
	}

	switch (op) {
	case DFU_OP_READ:
		opname = "load";
		break;
	case DFU_OP_WRITE:
		opname = "write";
		break;
	case DFU_OP_SIZE:
		opname = "size";
		break;
	default:
		return -1;
	}

	sprintf(cmd_buf, "%s%s mmc %d:%d", fsname, opname,
		dfu->data.mmc.dev, dfu->data.mmc.part);

	if (op != DFU_OP_SIZE)
		sprintf(cmd_buf + strlen(cmd_buf), " %p", buf);

	sprintf(cmd_buf + strlen(cmd_buf), " %s", dfu->name);

	if (op == DFU_OP_WRITE)
		sprintf(cmd_buf + strlen(cmd_buf), " %lx", *len);

	debug("%s: %s 0x%p\n", __func__, cmd_buf, cmd_buf);

	ret = run_command(cmd_buf, 0);
	if (ret) {
		puts("dfu: Read error!\n");
		return ret;
	}

	if (op != DFU_OP_WRITE) {
		str_env = getenv("filesize");
		if (str_env == NULL) {
			puts("dfu: Wrong file size!\n");
			return -1;
		}
		*len = simple_strtoul(str_env, NULL, 16);
	}

	return ret;
}

int dfu_write_medium_mmc(struct dfu_entity *dfu,
		u64 offset, void *buf, long *len)
{
	int ret = -1;

	switch (dfu->layout) {
	case DFU_RAW_ADDR:
		ret = mmc_block_op(DFU_OP_WRITE, dfu, offset, buf, len);
		break;
	case DFU_FS_FAT:
	case DFU_FS_EXT4:
		ret = mmc_file_buffer(dfu, buf, len);
		break;
	default:
		printf("%s: Layout (%s) not (yet) supported!\n", __func__,
		       dfu_get_layout(dfu->layout));
	}

	return ret;
}

int dfu_flush_medium_mmc(struct dfu_entity *dfu)
{
	int ret = 0;

	if (dfu->layout != DFU_RAW_ADDR) {
		/* Do stuff here. */
		ret = mmc_file_op(DFU_OP_WRITE, dfu, dfu_file_buf,
				&dfu_file_buf_len);

		/* Now that we're done */
		dfu_file_buf_len = 0;
	}

	return ret;
}

long dfu_get_medium_size_mmc(struct dfu_entity *dfu)
{
	int ret;
	long len;

	switch (dfu->layout) {
	case DFU_RAW_ADDR:
		return dfu->data.mmc.lba_size * dfu->data.mmc.lba_blk_size;
	case DFU_FS_FAT:
	case DFU_FS_EXT4:
		dfu_file_buf_filled = -1;
		ret = mmc_file_op(DFU_OP_SIZE, dfu, NULL, &len);
		if (ret < 0)
			return ret;
		if (len > CONFIG_SYS_DFU_MAX_FILE_SIZE)
			return -1;
		return len;
	default:
		printf("%s: Layout (%s) not (yet) supported!\n", __func__,
		       dfu_get_layout(dfu->layout));
		return -1;
	}
}

static int mmc_file_unbuffer(struct dfu_entity *dfu, u64 offset, void *buf,
			     long *len)
{
	int ret;
	long file_len;

	if (dfu_file_buf_filled == -1) {
		ret = mmc_file_op(DFU_OP_READ, dfu, dfu_file_buf, &file_len);
		if (ret < 0)
			return ret;
		dfu_file_buf_filled = file_len;
	}
	if (offset + *len > dfu_file_buf_filled)
		return -EINVAL;

	/* Add to the current buffer. */
	memcpy(buf, dfu_file_buf + offset, *len);

	return 0;
}

int dfu_read_medium_mmc(struct dfu_entity *dfu, u64 offset, void *buf,
		long *len)
{
	int ret = -1;

	switch (dfu->layout) {
	case DFU_RAW_ADDR:
		ret = mmc_block_op(DFU_OP_READ, dfu, offset, buf, len);
		break;
	case DFU_FS_FAT:
	case DFU_FS_EXT4:
		ret = mmc_file_unbuffer(dfu, offset, buf, len);
		break;
	default:
		printf("%s: Layout (%s) not (yet) supported!\n", __func__,
		       dfu_get_layout(dfu->layout));
	}

	return ret;
}

void dfu_free_entity_mmc(struct dfu_entity *dfu)
{
	if (dfu_file_buf) {
		free(dfu_file_buf);
		dfu_file_buf = NULL;
	}
}

/*
 * @param s Parameter string containing space-separated arguments:
 *	1st:
 *		raw	(raw read/write)
 *		fat	(files)
 *		ext4	(^)
 *		part	(partition image)
 *	2nd and 3rd:
 *		lba_start and lba_size, for raw write
 *		mmc_dev and mmc_part, for filesystems and part
 *	4th (optional):
 *		mmcpart <num> (access to HW eMMC partitions)
 */
int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *devstr, char *s)
{
	const char *entity_type;
	size_t second_arg;
	size_t third_arg;

	struct mmc *mmc;

	const char *argv[3];
	const char **parg = argv;

	dfu->data.mmc.dev_num = simple_strtoul(devstr, NULL, 10);

	for (; parg < argv + sizeof(argv) / sizeof(*argv); ++parg) {
		*parg = strsep(&s, " ");
		if (*parg == NULL) {
			error("Invalid number of arguments.\n");
			return -ENODEV;
		}
	}

	entity_type = argv[0];
	/*
	 * Base 0 means we'll accept (prefixed with 0x or 0) base 16, 8,
	 * with default 10.
	 */
	second_arg = simple_strtoul(argv[1], NULL, 0);
	third_arg = simple_strtoul(argv[2], NULL, 0);

	mmc = find_mmc_device(dfu->data.mmc.dev_num);
	if (mmc == NULL) {
		error("Couldn't find MMC device no. %d.\n",
		      dfu->data.mmc.dev_num);
		return -ENODEV;
	}

	if (mmc_init(mmc)) {
		error("Couldn't init MMC device.\n");
		return -ENODEV;
	}

	dfu->data.mmc.hw_partition = -EINVAL;
	if (!strcmp(entity_type, "raw")) {
		dfu->layout			= DFU_RAW_ADDR;
		dfu->data.mmc.lba_start		= second_arg;
		dfu->data.mmc.lba_size		= third_arg;
		dfu->data.mmc.lba_blk_size	= mmc->read_bl_len;

		/*
		 * Check for an extra entry at dfu_alt_info env variable
		 * specifying the mmc HW defined partition number
		 */
		if (s)
			if (!strcmp(strsep(&s, " "), "mmcpart"))
				dfu->data.mmc.hw_partition =
					simple_strtoul(s, NULL, 0);

	} else if (!strcmp(entity_type, "part")) {
		disk_partition_t partinfo;
		struct blk_desc *blk_dev = mmc_get_blk_desc(mmc);
		int mmcdev = second_arg;
		int mmcpart = third_arg;

		if (part_get_info(blk_dev, mmcpart, &partinfo) != 0) {
			error("Couldn't find part #%d on mmc device #%d\n",
			      mmcpart, mmcdev);
			return -ENODEV;
		}

		dfu->layout			= DFU_RAW_ADDR;
		dfu->data.mmc.lba_start		= partinfo.start;
		dfu->data.mmc.lba_size		= partinfo.size;
		dfu->data.mmc.lba_blk_size	= partinfo.blksz;
	} else if (!strcmp(entity_type, "fat")) {
		dfu->layout = DFU_FS_FAT;
	} else if (!strcmp(entity_type, "ext4")) {
		dfu->layout = DFU_FS_EXT4;
	} else {
		error("Memory layout (%s) not supported!\n", entity_type);
		return -ENODEV;
	}

	/* if it's NOT a raw write */
	if (strcmp(entity_type, "raw")) {
		dfu->data.mmc.dev = second_arg;
		dfu->data.mmc.part = third_arg;
	}

	dfu->dev_type = DFU_DEV_MMC;
	dfu->get_medium_size = dfu_get_medium_size_mmc;
	dfu->read_medium = dfu_read_medium_mmc;
	dfu->write_medium = dfu_write_medium_mmc;
	dfu->flush_medium = dfu_flush_medium_mmc;
	dfu->inited = 0;
	dfu->free_entity = dfu_free_entity_mmc;

	/* Check if file buffer is ready */
	if (!dfu_file_buf) {
		dfu_file_buf = memalign(CONFIG_SYS_CACHELINE_SIZE,
					CONFIG_SYS_DFU_MAX_FILE_SIZE);
		if (!dfu_file_buf) {
			error("Could not memalign 0x%x bytes",
			      CONFIG_SYS_DFU_MAX_FILE_SIZE);
			return -ENOMEM;
		}
	}

	return 0;
}
Commit	Line	Data
cb383cd2 ŁM	1	/*
	2	* dfu.c -- DFU back-end routines
	3	*
	4	* Copyright (C) 2012 Samsung Electronics
	5	* author: Lukasz Majewski <l.majewski@samsung.com>
	6	*
1a459660	7	* SPDX-License-Identifier: GPL-2.0+
cb383cd2 ŁM	8	*/
	9
	10	#include <common.h>
	11	#include <malloc.h>
1b6ca18b	12	#include <errno.h>
ea2453d5	13	#include <div64.h>
cb383cd2	14	#include <dfu.h>
0e285b50 SW	15	#include <ext4fs.h>
0e285b50 SW	16	#include <fat.h>
7d0b605a	17	#include <mmc.h>
cb383cd2	18
41ac233c	19	static unsigned char *dfu_file_buf;
ea2453d5	20	static long dfu_file_buf_len;
411c5e57	21	static long dfu_file_buf_filled;
ea2453d5	22
5a127c84	23	static int mmc_block_op(enum dfu_op op, struct dfu_entity *dfu,
ea2453d5	24	u64 offset, void buf, long len)
cb383cd2	25	{
7da6fa27	26	struct mmc *mmc;
7d0b605a	27	u32 blk_start, blk_count, n = 0;
c8151b4a	28	int ret, part_num_bkp = 0;
ea2453d5	29
7da6fa27 PM	30	mmc = find_mmc_device(dfu->data.mmc.dev_num);
	31	if (!mmc) {
	32	error("Device MMC %d - not found!", dfu->data.mmc.dev_num);
	33	return -ENODEV;
	34	}
	35
ea2453d5 PA	36	/*
	37	* We must ensure that we work in lba_blk_size chunks, so ALIGN
	38	* this value.
	39	*/
	40	len = ALIGN(len, dfu->data.mmc.lba_blk_size);
	41
	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");
	48	return -EINVAL;
	49	}
cb383cd2	50
c8151b4a	51	if (dfu->data.mmc.hw_partition >= 0) {
797d1b9d	52	part_num_bkp = mmc_get_blk_desc(mmc)->hwpart;
69f45cd5 SG	53	ret = blk_select_hwpart_devnum(IF_TYPE_MMC,
	54	dfu->data.mmc.dev_num,
	55	dfu->data.mmc.hw_partition);
c8151b4a ŁM	56	if (ret)
	57	return ret;
	58	}
	59
7d0b605a	60	debug("%s: %s dev: %d start: %d cnt: %d buf: 0x%p\n", __func__,
dd64827e SW	61	op == DFU_OP_READ ? "MMC READ" : "MMC WRITE",
dd64827e SW	62	dfu->data.mmc.dev_num, blk_start, blk_count, buf);
7d0b605a ŁM	63	switch (op) {
7d0b605a ŁM	64	case DFU_OP_READ:
797d1b9d	65	n = blk_dread(mmc_get_blk_desc(mmc), blk_start, blk_count, buf);
7d0b605a ŁM	66	break;
7d0b605a ŁM	67	case DFU_OP_WRITE:
797d1b9d SG	68	n = blk_dwrite(mmc_get_blk_desc(mmc), blk_start, blk_count,
797d1b9d SG	69	buf);
7d0b605a ŁM	70	break;
	71	default:
	72	error("Operation not supported\n");
	73	}
	74
	75	if (n != blk_count) {
	76	error("MMC operation failed");
c8151b4a	77	if (dfu->data.mmc.hw_partition >= 0)
69f45cd5 SG	78	blk_select_hwpart_devnum(IF_TYPE_MMC,
	79	dfu->data.mmc.dev_num,
	80	part_num_bkp);
7d0b605a ŁM	81	return -EIO;
7d0b605a ŁM	82	}
cb383cd2	83
c8151b4a	84	if (dfu->data.mmc.hw_partition >= 0) {
69f45cd5 SG	85	ret = blk_select_hwpart_devnum(IF_TYPE_MMC,
	86	dfu->data.mmc.dev_num,
	87	part_num_bkp);
c8151b4a ŁM	88	if (ret)
	89	return ret;
	90	}
	91
7d0b605a	92	return 0;
cb383cd2 ŁM	93	}
cb383cd2 ŁM	94
ea2453d5	95	static int mmc_file_buffer(struct dfu_entity dfu, void buf, long *len)
cb383cd2	96	{
ea2453d5 PA	97	if (dfu_file_buf_len + *len > CONFIG_SYS_DFU_MAX_FILE_SIZE) {
	98	dfu_file_buf_len = 0;
	99	return -EINVAL;
	100	}
cb383cd2	101
ea2453d5 PA	102	/* Add to the current buffer. */
	103	memcpy(dfu_file_buf + dfu_file_buf_len, buf, *len);
	104	dfu_file_buf_len += *len;
	105
	106	return 0;
cb383cd2 ŁM	107	}
cb383cd2 ŁM	108
5a127c84	109	static int mmc_file_op(enum dfu_op op, struct dfu_entity *dfu,
cb383cd2 ŁM	110	void buf, long len)
cb383cd2 ŁM	111	{
0e285b50	112	const char fsname, opname;
cb383cd2 ŁM	113	char cmd_buf[DFU_CMD_BUF_SIZE];
	114	char *str_env;
	115	int ret;
	116
43e66272 ŁM	117	switch (dfu->layout) {
43e66272 ŁM	118	case DFU_FS_FAT:
0e285b50	119	fsname = "fat";
43e66272 ŁM	120	break;
43e66272 ŁM	121	case DFU_FS_EXT4:
0e285b50	122	fsname = "ext4";
43e66272 ŁM	123	break;
	124	default:
	125	printf("%s: Layout (%s) not (yet) supported!\n", __func__,
	126	dfu_get_layout(dfu->layout));
ea2453d5	127	return -1;
43e66272	128	}
cb383cd2	129
0e285b50 SW	130	switch (op) {
	131	case DFU_OP_READ:
	132	opname = "load";
	133	break;
	134	case DFU_OP_WRITE:
	135	opname = "write";
	136	break;
	137	case DFU_OP_SIZE:
	138	opname = "size";
	139	break;
	140	default:
	141	return -1;
	142	}
	143
	144	sprintf(cmd_buf, "%s%s mmc %d:%d", fsname, opname,
	145	dfu->data.mmc.dev, dfu->data.mmc.part);
	146
	147	if (op != DFU_OP_SIZE)
e621c7ab	148	sprintf(cmd_buf + strlen(cmd_buf), " %p", buf);
0e285b50 SW	149
	150	sprintf(cmd_buf + strlen(cmd_buf), " %s", dfu->name);
	151
17eb1d8f ŁM	152	if (op == DFU_OP_WRITE)
	153	sprintf(cmd_buf + strlen(cmd_buf), " %lx", *len);
	154
cb383cd2 ŁM	155	debug("%s: %s 0x%p\n", __func__, cmd_buf, cmd_buf);
	156
	157	ret = run_command(cmd_buf, 0);
	158	if (ret) {
	159	puts("dfu: Read error!\n");
	160	return ret;
	161	}
	162
0e285b50	163	if (op != DFU_OP_WRITE) {
cb383cd2 ŁM	164	str_env = getenv("filesize");
	165	if (str_env == NULL) {
	166	puts("dfu: Wrong file size!\n");
	167	return -1;
	168	}
	169	*len = simple_strtoul(str_env, NULL, 16);
	170	}
	171
	172	return ret;
	173	}
	174
ea2453d5 PA	175	int dfu_write_medium_mmc(struct dfu_entity *dfu,
ea2453d5 PA	176	u64 offset, void buf, long len)
cb383cd2 ŁM	177	{
	178	int ret = -1;
	179
	180	switch (dfu->layout) {
	181	case DFU_RAW_ADDR:
ea2453d5	182	ret = mmc_block_op(DFU_OP_WRITE, dfu, offset, buf, len);
cb383cd2 ŁM	183	break;
cb383cd2 ŁM	184	case DFU_FS_FAT:
43e66272	185	case DFU_FS_EXT4:
ea2453d5	186	ret = mmc_file_buffer(dfu, buf, len);
cb383cd2 ŁM	187	break;
	188	default:
	189	printf("%s: Layout (%s) not (yet) supported!\n", __func__,
	190	dfu_get_layout(dfu->layout));
	191	}
	192
	193	return ret;
	194	}
	195
ea2453d5 PA	196	int dfu_flush_medium_mmc(struct dfu_entity *dfu)
	197	{
	198	int ret = 0;
	199
	200	if (dfu->layout != DFU_RAW_ADDR) {
	201	/* Do stuff here. */
41ac233c	202	ret = mmc_file_op(DFU_OP_WRITE, dfu, dfu_file_buf,
ea2453d5 PA	203	&dfu_file_buf_len);
	204
	205	/* Now that we're done */
	206	dfu_file_buf_len = 0;
	207	}
	208
	209	return ret;
	210	}
	211
0e285b50 SW	212	long dfu_get_medium_size_mmc(struct dfu_entity *dfu)
	213	{
	214	int ret;
	215	long len;
	216
	217	switch (dfu->layout) {
	218	case DFU_RAW_ADDR:
	219	return dfu->data.mmc.lba_size * dfu->data.mmc.lba_blk_size;
	220	case DFU_FS_FAT:
	221	case DFU_FS_EXT4:
411c5e57	222	dfu_file_buf_filled = -1;
0e285b50 SW	223	ret = mmc_file_op(DFU_OP_SIZE, dfu, NULL, &len);
	224	if (ret < 0)
	225	return ret;
411c5e57 SW	226	if (len > CONFIG_SYS_DFU_MAX_FILE_SIZE)
411c5e57 SW	227	return -1;
0e285b50 SW	228	return len;
	229	default:
	230	printf("%s: Layout (%s) not (yet) supported!\n", __func__,
	231	dfu_get_layout(dfu->layout));
	232	return -1;
	233	}
	234	}
	235
411c5e57 SW	236	static int mmc_file_unbuffer(struct dfu_entity dfu, u64 offset, void buf,
	237	long *len)
	238	{
	239	int ret;
	240	long file_len;
	241
	242	if (dfu_file_buf_filled == -1) {
	243	ret = mmc_file_op(DFU_OP_READ, dfu, dfu_file_buf, &file_len);
	244	if (ret < 0)
	245	return ret;
	246	dfu_file_buf_filled = file_len;
	247	}
	248	if (offset + *len > dfu_file_buf_filled)
	249	return -EINVAL;
	250
	251	/* Add to the current buffer. */
	252	memcpy(buf, dfu_file_buf + offset, *len);
	253
	254	return 0;
	255	}
	256
ea2453d5 PA	257	int dfu_read_medium_mmc(struct dfu_entity dfu, u64 offset, void buf,
ea2453d5 PA	258	long *len)
cb383cd2 ŁM	259	{
	260	int ret = -1;
	261
	262	switch (dfu->layout) {
	263	case DFU_RAW_ADDR:
ea2453d5	264	ret = mmc_block_op(DFU_OP_READ, dfu, offset, buf, len);
cb383cd2 ŁM	265	break;
cb383cd2 ŁM	266	case DFU_FS_FAT:
43e66272	267	case DFU_FS_EXT4:
411c5e57	268	ret = mmc_file_unbuffer(dfu, offset, buf, len);
cb383cd2 ŁM	269	break;
	270	default:
	271	printf("%s: Layout (%s) not (yet) supported!\n", __func__,
	272	dfu_get_layout(dfu->layout));
	273	}
	274
	275	return ret;
	276	}
	277
41ac233c PM	278	void dfu_free_entity_mmc(struct dfu_entity *dfu)
	279	{
	280	if (dfu_file_buf) {
	281	free(dfu_file_buf);
	282	dfu_file_buf = NULL;
	283	}
	284	}
	285
711b931f MZ	286	/*
	287	* @param s Parameter string containing space-separated arguments:
	288	* 1st:
	289	* raw (raw read/write)
	290	* fat (files)
	291	* ext4 (^)
	292	* part (partition image)
	293	* 2nd and 3rd:
	294	* lba_start and lba_size, for raw write
	295	* mmc_dev and mmc_part, for filesystems and part
c8151b4a ŁM	296	* 4th (optional):
c8151b4a ŁM	297	* mmcpart <num> (access to HW eMMC partitions)
711b931f	298	*/
dd64827e	299	int dfu_fill_entity_mmc(struct dfu_entity dfu, char devstr, char *s)
cb383cd2	300	{
711b931f MZ	301	const char *entity_type;
	302	size_t second_arg;
	303	size_t third_arg;
cb383cd2	304
711b931f	305	struct mmc *mmc;
1b6ca18b	306
711b931f MZ	307	const char *argv[3];
711b931f MZ	308	const char **parg = argv;
1b6ca18b	309
dd64827e SW	310	dfu->data.mmc.dev_num = simple_strtoul(devstr, NULL, 10);
dd64827e SW	311
711b931f MZ	312	for (; parg < argv + sizeof(argv) / sizeof(*argv); ++parg) {
	313	*parg = strsep(&s, " ");
	314	if (*parg == NULL) {
	315	error("Invalid number of arguments.\n");
1b6ca18b PA	316	return -ENODEV;
1b6ca18b PA	317	}
711b931f	318	}
1b6ca18b	319
711b931f	320	entity_type = argv[0];
b7d4259a MZ	321	/*
	322	* Base 0 means we'll accept (prefixed with 0x or 0) base 16, 8,
	323	* with default 10.
	324	*/
	325	second_arg = simple_strtoul(argv[1], NULL, 0);
	326	third_arg = simple_strtoul(argv[2], NULL, 0);
711b931f	327
dd64827e	328	mmc = find_mmc_device(dfu->data.mmc.dev_num);
711b931f	329	if (mmc == NULL) {
dd64827e SW	330	error("Couldn't find MMC device no. %d.\n",
dd64827e SW	331	dfu->data.mmc.dev_num);
711b931f MZ	332	return -ENODEV;
	333	}
	334
	335	if (mmc_init(mmc)) {
	336	error("Couldn't init MMC device.\n");
	337	return -ENODEV;
	338	}
	339
c8151b4a	340	dfu->data.mmc.hw_partition = -EINVAL;
711b931f MZ	341	if (!strcmp(entity_type, "raw")) {
	342	dfu->layout = DFU_RAW_ADDR;
	343	dfu->data.mmc.lba_start = second_arg;
	344	dfu->data.mmc.lba_size = third_arg;
	345	dfu->data.mmc.lba_blk_size = mmc->read_bl_len;
c8151b4a ŁM	346
	347	/*
	348	* Check for an extra entry at dfu_alt_info env variable
	349	* specifying the mmc HW defined partition number
	350	*/
	351	if (s)
	352	if (!strcmp(strsep(&s, " "), "mmcpart"))
	353	dfu->data.mmc.hw_partition =
	354	simple_strtoul(s, NULL, 0);
	355
711b931f MZ	356	} else if (!strcmp(entity_type, "part")) {
711b931f MZ	357	disk_partition_t partinfo;
797d1b9d	358	struct blk_desc *blk_dev = mmc_get_blk_desc(mmc);
711b931f MZ	359	int mmcdev = second_arg;
	360	int mmcpart = third_arg;
	361
3e8bd469	362	if (part_get_info(blk_dev, mmcpart, &partinfo) != 0) {
711b931f MZ	363	error("Couldn't find part #%d on mmc device #%d\n",
711b931f MZ	364	mmcpart, mmcdev);
1b6ca18b PA	365	return -ENODEV;
	366	}
	367
711b931f MZ	368	dfu->layout = DFU_RAW_ADDR;
	369	dfu->data.mmc.lba_start = partinfo.start;
	370	dfu->data.mmc.lba_size = partinfo.size;
	371	dfu->data.mmc.lba_blk_size = partinfo.blksz;
	372	} else if (!strcmp(entity_type, "fat")) {
	373	dfu->layout = DFU_FS_FAT;
	374	} else if (!strcmp(entity_type, "ext4")) {
	375	dfu->layout = DFU_FS_EXT4;
cb383cd2	376	} else {
711b931f	377	error("Memory layout (%s) not supported!\n", entity_type);
1b6ca18b	378	return -ENODEV;
cb383cd2 ŁM	379	}
cb383cd2 ŁM	380
711b931f MZ	381	/* if it's NOT a raw write */
	382	if (strcmp(entity_type, "raw")) {
	383	dfu->data.mmc.dev = second_arg;
	384	dfu->data.mmc.part = third_arg;
43e66272 ŁM	385	}
43e66272 ŁM	386
711b931f	387	dfu->dev_type = DFU_DEV_MMC;
0e285b50	388	dfu->get_medium_size = dfu_get_medium_size_mmc;
cb383cd2 ŁM	389	dfu->read_medium = dfu_read_medium_mmc;
cb383cd2 ŁM	390	dfu->write_medium = dfu_write_medium_mmc;
ea2453d5	391	dfu->flush_medium = dfu_flush_medium_mmc;
ea2453d5	392	dfu->inited = 0;
41ac233c PM	393	dfu->free_entity = dfu_free_entity_mmc;
	394
	395	/* Check if file buffer is ready */
	396	if (!dfu_file_buf) {
	397	dfu_file_buf = memalign(CONFIG_SYS_CACHELINE_SIZE,
	398	CONFIG_SYS_DFU_MAX_FILE_SIZE);
	399	if (!dfu_file_buf) {
	400	error("Could not memalign 0x%x bytes",
	401	CONFIG_SYS_DFU_MAX_FILE_SIZE);
	402	return -ENOMEM;
	403	}
	404	}
cb383cd2 ŁM	405
	406	return 0;
	407	}