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cmd: mtdparts: consolidate mtdparts reading from env

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Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
This commit is contained in:
Ladislav Michl 2016-07-12 20:28:24 +02:00 committed by Tom Rini
parent 06a040a31b
commit 1c2a262a9d
1 changed files with 20 additions and 22 deletions
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42
cmd/mtdparts.c
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@ -1515,6 +1515,23 @@ static int spread_partitions(void)
}
#endif /* CONFIG_CMD_MTDPARTS_SPREAD */
/**
* The mtdparts variable tends to be long. If we need to access it
* before the env is relocated, then we need to use our own stack
* buffer. gd->env_buf will be too small.
*
* @param buf temporary buffer pointer MTDPARTS_MAXLEN long
* @return mtdparts variable string, NULL if not found
*/
static const char *getenv_mtdparts(char *buf)
{
if (gd->flags & GD_FLG_ENV_READY)
return getenv("mtdparts");
if (getenv_f("mtdparts", buf, MTDPARTS_MAXLEN) != -1)
return buf;
return NULL;
}
/**
* Accept character string describing mtd partitions and call device_parse()
* for each entry. Add created devices to the global devices list.
@ -1538,15 +1555,7 @@ static int parse_mtdparts(const char *const mtdparts)
}
/* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
if (gd->flags & GD_FLG_ENV_READY)
p = getenv("mtdparts");
else {
if (getenv_f("mtdparts", tmp_parts, MTDPARTS_MAXLEN) != -1)
p = tmp_parts;
else
p = NULL;
}
p = getenv_mtdparts(tmp_parts);
if (!p)
p = mtdparts;
@ -1691,6 +1700,7 @@ static int parse_mtdids(const char *const ids)
return 0;
}
/**
* Parse and initialize global mtdids mapping and create global
* device/partition list.
@ -1718,19 +1728,7 @@ int mtdparts_init(void)
/* get variables */
ids = getenv("mtdids");
/*
* The mtdparts variable tends to be long. If we need to access it
* before the env is relocated, then we need to use our own stack
* buffer. gd->env_buf will be too small.
*/
if (gd->flags & GD_FLG_ENV_READY)
parts = getenv("mtdparts");
else {
if (getenv_f("mtdparts", tmp_parts, MTDPARTS_MAXLEN) != -1)
parts = tmp_parts;
else
parts = NULL;
}
parts = getenv_mtdparts(tmp_parts);
current_partition = getenv("partition");
/* save it for later parsing, cannot rely on current partition pointer