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mtd: Use default mtdparts/mtids when not defined in the environment

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U-boot provides a mean to define default values for mtdids and mtdparts
when they're not defined in the environment. Patch mtd_probe_devices()
to use those default values when env_get("mtdparts") or
env_get("mtdids") return NULL.

This implementation is based on the logic found in cmd/mtdparts.c.

Fixes: 5db66b3aee ("cmd: mtd: add 'mtd' command")
Reported-by: Stefan Roese <sr@denx.de>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Tested-by: Stefan Roese <sr@denx.de>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Jagan Teki <jagan@openedev.com>
This commit is contained in:
Boris Brezillon 2018-11-13 12:43:09 +01:00 committed by Jagan Teki
parent c80cc3df3d
commit 5ffcd50612
1 changed files with 60 additions and 2 deletions
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62
drivers/mtd/mtd_uboot.c
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@ -92,12 +92,70 @@ static void mtd_probe_uclass_mtd_devs(void) { }
#endif
#if defined(CONFIG_MTD_PARTITIONS)
extern void board_mtdparts_default(const char **mtdids,
const char **mtdparts);
static const char *get_mtdids(void)
{
__maybe_unused const char *mtdparts = NULL;
const char *mtdids = env_get("mtdids");
if (mtdids)
return mtdids;
#if defined(CONFIG_SYS_MTDPARTS_RUNTIME)
board_mtdparts_default(&mtdids, &mtdparts);
#elif defined(MTDIDS_DEFAULT)
mtdids = MTDIDS_DEFAULT;
#elif defined(CONFIG_MTDIDS_DEFAULT)
mtdids = CONFIG_MTDIDS_DEFAULT;
#endif
if (mtdids)
env_set("mtdids", mtdids);
return mtdids;
}
#define MTDPARTS_MAXLEN 512
static const char *get_mtdparts(void)
{
__maybe_unused const char *mtdids = NULL;
static char tmp_parts[MTDPARTS_MAXLEN];
static bool use_defaults = true;
const char *mtdparts = NULL;
if (gd->flags & GD_FLG_ENV_READY)
mtdparts = env_get("mtdparts");
else if (env_get_f("mtdparts", tmp_parts, sizeof(tmp_parts)) != -1)
mtdparts = tmp_parts;
if (mtdparts || !use_defaults)
return mtdparts;
#if defined(CONFIG_SYS_MTDPARTS_RUNTIME)
board_mtdparts_default(&mtdids, &mtdparts);
#elif defined(MTDPARTS_DEFAULT)
mtdparts = MTDPARTS_DEFAULT;
#elif defined(CONFIG_MTDPARTS_DEFAULT)
mtdparts = CONFIG_MTDPARTS_DEFAULT;
#endif
if (mtdparts)
env_set("mtdparts", mtdparts);
use_defaults = false;
return mtdparts;
}
int mtd_probe_devices(void)
{
static char *old_mtdparts;
static char *old_mtdids;
const char *mtdparts = env_get("mtdparts");
const char *mtdids = env_get("mtdids");
const char *mtdparts = get_mtdparts();
const char *mtdids = get_mtdids();
bool remaining_partitions = true;
struct mtd_info *mtd;