@@ -31,6 +31,7 @@
#define __UBI_MEDIA_H__
#include <asm/byteorder.h>
+#include <linux/list.h>
/* The version of UBI images supported by this implementation */
#define UBI_VERSION 1
@@ -295,7 +296,11 @@ struct ubi_vid_hdr {
} __packed;
/* Internal UBI volumes count */
+#ifdef CONFIG_MTD_UBI_MLC_NAND_BAKVOL
+#define UBI_INT_VOL_COUNT 2
+#else
#define UBI_INT_VOL_COUNT 1
+#endif
/*
* Starting ID of internal volumes: 0x7fffefff.
@@ -312,6 +317,15 @@ struct ubi_vid_hdr {
#define UBI_LAYOUT_VOLUME_NAME "layout volume"
#define UBI_LAYOUT_VOLUME_COMPAT UBI_COMPAT_REJECT
+/* The backup log volume */
+
+#define UBI_BACKUP_VOLUME_ID (UBI_INTERNAL_VOL_START + 1)
+#define UBI_BACKUP_VOLUME_TYPE UBI_VID_DYNAMIC
+#define UBI_BACKUP_VOLUME_ALIGN 1
+#define UBI_BACKUP_VOLUME_EBS 20
+#define UBI_BACKUP_VOLUME_NAME "bakvol"
+#define UBI_BACKUP_VOLUME_COMPAT UBI_COMPAT_REJECT
+
/* The maximum number of volumes per one UBI device */
#define UBI_MAX_VOLUMES 128
@@ -325,6 +339,56 @@ struct ubi_vid_hdr {
#define UBI_VTBL_RECORD_SIZE_CRC (UBI_VTBL_RECORD_SIZE - sizeof(__be32))
/**
+ * struct ubi_bkblk_info - the information for one backup block .
+ * @peb: physical block number
+ * @leb: logic block number
+ * @plane: this block belongs to which plane
+ * @pgnum: the page number that already be programmed last time.
+ */
+struct ubi_bkblk_info {
+ __be32 peb;
+ __be32 leb;
+ __u8 plane;
+ __be32 pgnum;
+ struct list_head node;
+}__packed;
+
+/**
+ * struct bakvol_oob_info - user oob area structure.
+ * @addr: address of source/backup page
+ * @crc: CRC-32 checksum of addr
+ *
+ */
+struct bakvol_oob_info {
+ loff_t addr;
+ __le32 crc;
+} __packed;
+
+/* Sizes of bakvol oob area */
+#define UBI_BAKVOL_OOB_SIZE sizeof(struct bakvol_oob_info)
+
+/* Sizes of bakvol oob area without the ending CRC */
+#define UBI_BAKVOL_OOB_SIZE_CRC (UBI_BAKVOL_OOB_SIZE - sizeof(__be32))
+
+/**
+ * struct ubi_bkblk_tbl - a table for backup blocks.
+ * @bakvol_flag: indicate if backup volume be initted
+ * @bcount_of_plane: block count that has bee applied for corresponding plane
+ * @head: the list of backup blocks.
+ */
+struct ubi_bkblk_tbl {
+ __u8 bakvol_flag;
+#define UBI_BAKVOL_INIT_START 0x01 /* init bakvol module start */
+#define UBI_BAKVOL_REJECT 0x02 /* reject bakvol module operations */
+#define UBI_BAKVOL_INIT_DONE 0x04 /* init bakvol module done */
+#define UBI_BAKVOL_ENABLE 0x08 /* enable bakvol module */
+#define UBI_BAKVOL_DISABLE 0x10 /* disable bakvol module */
+#define UBI_BAKVOL_RECOVERY 0x20 /* bakvol recovery already done */
+ __be32 bcount_of_plane[2];
+ struct list_head head;
+}__packed;;
+
+/**
* struct ubi_vtbl_record - a record in the volume table.
* @reserved_pebs: how many physical eraseblocks are reserved for this volume
* @alignment: volume alignment