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/*
* MTD partitioning layer definitions
*
* (C) 2000 Nicolas Pitre <nico@cam.org>
*
* This code is GPL
*
* $Id: partitions.h,v 1.8 2002/03/08 16:34:36 rkaiser Exp $
*/
#ifndef MTD_PARTITIONS_H
#define MTD_PARTITIONS_H
#include <linux/types.h>
/*
* Partition definition structure:
*
* An array of struct partition is passed along with a MTD object to
* add_mtd_partitions() to create them.
*
* For each partition, these fields are available:
* name: string that will be used to label the partition's MTD device.
* size: the partition size; if defined as MTDPART_SIZ_FULL, the partition
* will extend to the end of the master MTD device.
* offset: absolute starting position within the master MTD device; if
* defined as MTDPART_OFS_APPEND, the partition will start where the
* previous one ended; if MTDPART_OFS_NXTBLK, at the next erase block.
* mask_flags: contains flags that have to be masked (removed) from the
* master MTD flag set for the corresponding MTD partition.
* For example, to force a read-only partition, simply adding
* MTD_WRITEABLE to the mask_flags will do the trick.
*
* Note: writeable partitions require their size and offset be
* erasesize aligned (e.g. use MTDPART_OFS_NEXTBLK).
*/
struct mtd_partition {
char *name; /* identifier string */
u_int32_t size; /* partition size */
u_int32_t offset; /* offset within the master MTD space */
u_int32_t mask_flags; /* master MTD flags to mask out for this partition */
struct mtd_info **mtdp; /* pointer to store the MTD object */
};
#define MTDPART_OFS_NXTBLK (-2)
#define MTDPART_OFS_APPEND (-1)
#define MTDPART_SIZ_FULL (0)
int add_mtd_partitions(struct mtd_info *, struct mtd_partition *, int);
int del_mtd_partitions(struct mtd_info *);
#endif
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