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mtd: mtdpart: add a generic mtdparts-like parser

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The current parser is very specific to U-Boot mtdparts implementation.
It does not use MTD structures like mtd_info and mtd_partition. Copy
and adapt the current parser in drivers/mtd/mtd-uclass.c (to not break
the current use of mtdparts.c itself) and write some kind of a wrapper
around the current implementation to allow other commands to benefit
from this parsing in a user-friendly way.

This new function will allocate an mtd_partition array for each
successful call. This array must be freed after use by the caller.
The given 'mtdparts' buffer pointer will be moved forward to the next
MTD device (if any, it will point towards a '\0' character otherwise).

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
This commit is contained in:
Miquel Raynal 2018-09-29 12:58:25 +02:00 • committed by Jagan Teki
parent e9f62db64b
commit 21cc1fb5af
2 changed files with 231 additions and 0 deletions
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21
include/linux/mtd/partitions.h
View file

@ -87,4 +87,25 @@ int mtd_add_partition(struct mtd_info *master, const char *name,
int mtd_del_partition(struct mtd_info *master, int partno);
uint64_t mtd_get_device_size(const struct mtd_info *mtd);
#if defined(CONFIG_MTD_PARTITIONS)
int mtd_parse_partitions(struct mtd_info *parent, const char **_mtdparts,
struct mtd_partition **_parts, int *_nparts);
void mtd_free_parsed_partitions(struct mtd_partition *parts,
unsigned int nparts);
#else
static inline int
mtd_parse_partitions(struct mtd_info *parent, const char **_mtdparts,
struct mtd_partition **_parts, int *_nparts)
{
*_nparts = 0;
return 0;
}
static inline void
mtd_free_parsed_partitions(struct mtd_partition *parts, unsigned int nparts)
{
return;
}
#endif /* defined(MTD_PARTITIONS) */
#endif