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authorLadislav Michl <ladis@linux-mips.org>2016-07-12 20:28:25 +0200
committerTom Rini <trini@konsulko.com>2016-07-22 14:46:14 -0400
commitf8f744a3e8515cae50adefd861e34dab59f9ae6f (patch)
treeadef3b046c4b53d7d73d61f411c4681c5659ce75
parent1c2a262a9d6132e52108a1b6bd36499ee1f06377 (diff)
cmd: mtdparts: use defaults by default
Boards which are defining default mtdparts often need them early in boot process (to load environment from UBI volume, for example). This is currently solved by adding mtdparts and mtdids variable definitions also to default environment. With this change, default partitions are used by default unless explicitely deleted or redefined. Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
-rw-r--r--cmd/mtdparts.c22
1 files changed, 16 insertions, 6 deletions
diff --git a/cmd/mtdparts.c b/cmd/mtdparts.c
index 7860ed9f52..53074a1e85 100644
--- a/cmd/mtdparts.c
+++ b/cmd/mtdparts.c
@@ -142,6 +142,8 @@ static struct list_head devices;
struct mtd_device *current_mtd_dev = NULL;
u8 current_mtd_partnum = 0;
+u8 use_defaults;
+
static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num);
/* command line only routines */
@@ -1723,6 +1725,7 @@ int mtdparts_init(void)
memset(last_ids, 0, MTDIDS_MAXLEN);
memset(last_parts, 0, MTDPARTS_MAXLEN);
memset(last_partition, 0, PARTITION_MAXLEN);
+ use_defaults = 1;
initialized = 1;
}
@@ -1761,10 +1764,16 @@ int mtdparts_init(void)
return 1;
}
- /* do no try to use defaults when mtdparts variable is not defined,
- * just check the length */
- if (!parts)
- printf("mtdparts variable not set, see 'help mtdparts'\n");
+ /* use defaults when mtdparts variable is not defined
+ * once mtdparts is saved environment, drop use_defaults flag */
+ if (!parts) {
+ if (mtdparts_default && use_defaults) {
+ parts = mtdparts_default;
+ if (setenv("mtdparts", (char *)parts) == 0)
+ use_defaults = 0;
+ } else
+ printf("mtdparts variable not set, see 'help mtdparts'\n");
+ }
if (parts && (strlen(parts) > MTDPARTS_MAXLEN - 1)) {
printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN);
@@ -1936,9 +1945,10 @@ static int do_mtdparts(cmd_tbl_t *cmdtp, int flag, int argc,
{
if (argc == 2) {
if (strcmp(argv[1], "default") == 0) {
- setenv("mtdids", (char *)mtdids_default);
- setenv("mtdparts", (char *)mtdparts_default);
+ setenv("mtdids", NULL);
+ setenv("mtdparts", NULL);
setenv("partition", NULL);
+ use_defaults = 1;
mtdparts_init();
return 0;