1 files changed, 462 insertions, 0 deletions

diff --git a/roms/u-boot/drivers/dfu/dfu_mmc.c b/roms/u-boot/drivers/dfu/dfu_mmc.c
new file mode 100644
index 000000000..e63fa84ce
--- /dev/null
+++ b/roms/u-boot/drivers/dfu/dfu_mmc.c
@@ -0,0 +1,462 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * dfu.c -- DFU back-end routines
+ *
+ * Copyright (C) 2012 Samsung Electronics
+ * author: Lukasz Majewski <l.majewski@samsung.com>
+ */
+
+#include <common.h>
+#include <log.h>
+#include <malloc.h>
+#include <errno.h>
+#include <div64.h>
+#include <dfu.h>
+#include <ext4fs.h>
+#include <fat.h>
+#include <mmc.h>
+#include <part.h>
+#include <command.h>
+
+static unsigned char *dfu_file_buf;
+static u64 dfu_file_buf_len;
+static u64 dfu_file_buf_offset;
+
+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) {
+		pr_err("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:
+		pr_err("Operation not supported\n");
+	}
+
+	if (n != blk_count) {
+		pr_err("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_op(enum dfu_op op, struct dfu_entity *dfu,
+			u64 offset, void *buf, u64 *len)
+{
+	char dev_part_str[8];
+	int ret;
+	int fstype;
+	loff_t size = 0;
+
+	switch (dfu->layout) {
+	case DFU_FS_FAT:
+		fstype = FS_TYPE_FAT;
+		break;
+	case DFU_FS_EXT4:
+		fstype = FS_TYPE_EXT;
+		break;
+	case DFU_SKIP:
+		return 0;
+	default:
+		printf("%s: Layout (%s) not (yet) supported!\n", __func__,
+		       dfu_get_layout(dfu->layout));
+		return -1;
+	}
+
+	snprintf(dev_part_str, sizeof(dev_part_str), "%d:%d",
+		 dfu->data.mmc.dev, dfu->data.mmc.part);
+
+	ret = fs_set_blk_dev("mmc", dev_part_str, fstype);
+	if (ret) {
+		puts("dfu: fs_set_blk_dev error!\n");
+		return ret;
+	}
+
+	switch (op) {
+	case DFU_OP_READ:
+		ret = fs_read(dfu->name, (size_t)buf, offset, *len, &size);
+		if (ret) {
+			puts("dfu: fs_read error!\n");
+			return ret;
+		}
+		*len = size;
+		break;
+	case DFU_OP_WRITE:
+		ret = fs_write(dfu->name, (size_t)buf, offset, *len, &size);
+		if (ret) {
+			puts("dfu: fs_write error!\n");
+			return ret;
+		}
+		break;
+	case DFU_OP_SIZE:
+		ret = fs_size(dfu->name, &size);
+		if (ret) {
+			puts("dfu: fs_size error!\n");
+			return ret;
+		}
+		*len = size;
+		break;
+	default:
+		return -1;
+	}
+
+	return ret;
+}
+
+static int mmc_file_buf_write(struct dfu_entity *dfu, u64 offset, void *buf, long *len)
+{
+	int ret = 0;
+
+	if (offset == 0) {
+		dfu_file_buf_len = 0;
+		dfu_file_buf_offset = 0;
+	}
+
+	/* Add to the current buffer. */
+	if (dfu_file_buf_len + *len > CONFIG_SYS_DFU_MAX_FILE_SIZE)
+		*len = CONFIG_SYS_DFU_MAX_FILE_SIZE - dfu_file_buf_len;
+	memcpy(dfu_file_buf + dfu_file_buf_len, buf, *len);
+	dfu_file_buf_len += *len;
+
+	if (dfu_file_buf_len == CONFIG_SYS_DFU_MAX_FILE_SIZE) {
+		ret = mmc_file_op(DFU_OP_WRITE, dfu, dfu_file_buf_offset,
+				  dfu_file_buf, &dfu_file_buf_len);
+		dfu_file_buf_offset += dfu_file_buf_len;
+		dfu_file_buf_len = 0;
+	}
+
+	return ret;
+}
+
+static int mmc_file_buf_write_finish(struct dfu_entity *dfu)
+{
+	int ret = mmc_file_op(DFU_OP_WRITE, dfu, dfu_file_buf_offset,
+			dfu_file_buf, &dfu_file_buf_len);
+
+	/* Now that we're done */
+	dfu_file_buf_len = 0;
+	dfu_file_buf_offset = 0;
+
+	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_buf_write(dfu, offset, buf, len);
+		break;
+	case DFU_SCRIPT:
+		ret = run_command_list(buf, *len, 0);
+		break;
+	case DFU_SKIP:
+		ret = 0;
+		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;
+
+	switch (dfu->layout) {
+	case DFU_FS_FAT:
+	case DFU_FS_EXT4:
+		ret = mmc_file_buf_write_finish(dfu);
+		break;
+	case DFU_SCRIPT:
+		/* script may have changed the dfu_alt_info */
+		dfu_reinit_needed = true;
+		break;
+	case DFU_RAW_ADDR:
+	case DFU_SKIP:
+		break;
+	default:
+		printf("%s: Layout (%s) not (yet) supported!\n", __func__,
+		       dfu_get_layout(dfu->layout));
+	}
+
+	return ret;
+}
+
+int dfu_get_medium_size_mmc(struct dfu_entity *dfu, u64 *size)
+{
+	int ret;
+
+	switch (dfu->layout) {
+	case DFU_RAW_ADDR:
+		*size = dfu->data.mmc.lba_size * dfu->data.mmc.lba_blk_size;
+		return 0;
+	case DFU_FS_FAT:
+	case DFU_FS_EXT4:
+		ret = mmc_file_op(DFU_OP_SIZE, dfu, 0, NULL, size);
+		if (ret < 0)
+			return ret;
+		return 0;
+	case DFU_SCRIPT:
+	case DFU_SKIP:
+		return 0;
+	default:
+		printf("%s: Layout (%s) not (yet) supported!\n", __func__,
+		       dfu_get_layout(dfu->layout));
+		return -1;
+	}
+}
+
+
+static int mmc_file_buf_read(struct dfu_entity *dfu, u64 offset, void *buf,
+			     long *len)
+{
+	int ret;
+
+	if (offset == 0 || offset >= dfu_file_buf_offset + dfu_file_buf_len ||
+	    offset + *len < dfu_file_buf_offset) {
+		u64 file_len = CONFIG_SYS_DFU_MAX_FILE_SIZE;
+
+		ret = mmc_file_op(DFU_OP_READ, dfu, offset, dfu_file_buf,
+				  &file_len);
+		if (ret < 0)
+			return ret;
+		dfu_file_buf_len = file_len;
+		dfu_file_buf_offset = offset;
+	}
+	if (offset + *len > dfu_file_buf_offset + dfu_file_buf_len)
+		return -EINVAL;
+
+	/* Add to the current buffer. */
+	memcpy(buf, dfu_file_buf + offset - 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_buf_read(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;
+	ssize_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) {
+			pr_err("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_strtol(argv[1], NULL, 0);
+	third_arg = simple_strtoul(argv[2], NULL, 0);
+
+	mmc = find_mmc_device(dfu->data.mmc.dev_num);
+	if (mmc == NULL) {
+		pr_err("Couldn't find MMC device no. %d.\n",
+		      dfu->data.mmc.dev_num);
+		return -ENODEV;
+	}
+
+	if (mmc_init(mmc)) {
+		pr_err("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")) {
+		struct disk_partition partinfo;
+		struct blk_desc *blk_dev = mmc_get_blk_desc(mmc);
+		int mmcdev = second_arg;
+		int mmcpart = third_arg;
+		int offset = 0;
+
+		if (part_get_info(blk_dev, mmcpart, &partinfo) != 0) {
+			pr_err("Couldn't find part #%d on mmc device #%d\n",
+			      mmcpart, mmcdev);
+			return -ENODEV;
+		}
+
+		/*
+		 * Check for an extra entry at dfu_alt_info env variable
+		 * specifying the mmc HW defined partition number
+		 */
+		if (s)
+			if (!strcmp(strsep(&s, " "), "offset"))
+				offset = simple_strtoul(s, NULL, 0);
+
+		dfu->layout			= DFU_RAW_ADDR;
+		dfu->data.mmc.lba_start		= partinfo.start + offset;
+		dfu->data.mmc.lba_size		= partinfo.size-offset;
+		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 if (!strcmp(entity_type, "skip")) {
+		dfu->layout = DFU_SKIP;
+	} else if (!strcmp(entity_type, "script")) {
+		dfu->layout = DFU_SCRIPT;
+	} else {
+		pr_err("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 != -1) ? second_arg :
+							 dfu->data.mmc.dev_num;
+		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) {
+			pr_err("Could not memalign 0x%x bytes",
+			      CONFIG_SYS_DFU_MAX_FILE_SIZE);
+			return -ENOMEM;
+		}
+	}
+
+	return 0;
+}