dfu: DFU backend implementation

New, separate driver at ./drivers/dfu has been added. It allows platform
and storage independent operation of DFU.
It has been extended to use new MMC level of command abstraction.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Marek Vasut <marex@denx.de>

1 files changed, 103 insertions, 0 deletions

diff --git a/include/dfu.h b/include/dfu.h
new file mode 100644
index 0000000..5350d79
--- /dev/null
+++ b/include/dfu.h
@@ -0,0 +1,103 @@
+/*
+ * dfu.h - DFU flashable area description
+ *
+ * Copyright (C) 2012 Samsung Electronics
+ * authors: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
+ *	    Lukasz Majewski <l.majewski@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __DFU_ENTITY_H_
+#define __DFU_ENTITY_H_
+
+#include <common.h>
+#include <linux/list.h>
+#include <mmc.h>
+
+enum dfu_device_type {
+	DFU_DEV_MMC = 1,
+	DFU_DEV_ONENAND,
+	DFU_DEV_NAND,
+};
+
+enum dfu_layout {
+	DFU_RAW_ADDR = 1,
+	DFU_FS_FAT,
+	DFU_FS_EXT2,
+	DFU_FS_EXT3,
+	DFU_FS_EXT4,
+};
+
+struct mmc_internal_data {
+	/* RAW programming */
+	unsigned int lba_start;
+	unsigned int lba_size;
+	unsigned int lba_blk_size;
+
+	/* FAT/EXT */
+	unsigned int dev;
+	unsigned int part;
+};
+
+static inline unsigned int get_mmc_blk_size(int dev)
+{
+	return find_mmc_device(dev)->read_bl_len;
+}
+
+#define DFU_NAME_SIZE 32
+#define DFU_CMD_BUF_SIZE 128
+#define DFU_DATA_BUF_SIZE (1024*1024*4) /* 4 MiB */
+
+struct dfu_entity {
+	char			name[DFU_NAME_SIZE];
+	int                     alt;
+	void                    *dev_private;
+	int                     dev_num;
+	enum dfu_device_type    dev_type;
+	enum dfu_layout         layout;
+
+	union {
+		struct mmc_internal_data mmc;
+	} data;
+
+	int (*read_medium)(struct dfu_entity *dfu, void *buf, long *len);
+	int (*write_medium)(struct dfu_entity *dfu, void *buf, long *len);
+
+	struct list_head list;
+};
+
+int dfu_config_entities(char *s, char *interface, int num);
+void dfu_free_entities(void);
+void dfu_show_entities(void);
+int dfu_get_alt_number(void);
+const char *dfu_get_dev_type(enum dfu_device_type t);
+const char *dfu_get_layout(enum dfu_layout l);
+struct dfu_entity *dfu_get_entity(int alt);
+char *dfu_extract_token(char** e, int *n);
+
+int dfu_read(struct dfu_entity *de, void *buf, int size, int blk_seq_num);
+int dfu_write(struct dfu_entity *de, void *buf, int size, int blk_seq_num);
+/* Device specific */
+#ifdef CONFIG_DFU_MMC
+extern int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *s);
+#else
+static inline int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *s)
+{
+	puts("MMC support not available!\n");
+	return -1;
+}
+#endif
+#endif /* __DFU_ENTITY_H_ */