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part: let list put the list in an environment variable 

Add an optional third argument to the "part list" command which puts a
space seperated list of valid partitions into the given environment
variable. This is useful for allowing boot scripts to iterate of all
partitions of a device.

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
This commit is contained in:
Sjoerd Simons 2015-01-05 18:13:37 +01:00 committed by Tom Rini
parent 1a1ad8e090
commit e86df6ef4f
1 changed files with 22 additions and 2 deletions
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24
common/cmd_part.c
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@ -54,13 +54,31 @@ static int do_part_list(int argc, char * const argv[])
int ret; int ret;
block_dev_desc_t *desc; block_dev_desc_t *desc;
if (argc != 2) if (argc < 2 || argc > 3)
return CMD_RET_USAGE; return CMD_RET_USAGE;
ret = get_device(argv[0], argv[1], &desc); ret = get_device(argv[0], argv[1], &desc);
if (ret < 0) if (ret < 0)
return 1; return 1;
if (argc == 3) {
int p;
char str[512] = { 0, };
disk_partition_t info;
for (p = 1; p < 128; p++) {
int r = get_partition_info(desc, p, &info);
if (r == 0) {
char t[5];
sprintf(t, "%s%d", str[0] ? " " : "", p);
strcat(str, t);
}
}
setenv(argv[2], str);
return 0;
}
print_part(desc); print_part(desc);
return 0; return 0;
@ -87,5 +105,7 @@ U_BOOT_CMD(
"part uuid <interface> <dev>:<part> <varname>\n" "part uuid <interface> <dev>:<part> <varname>\n"
" - set environment variable to partition UUID\n" " - set environment variable to partition UUID\n"
"part list <interface> <dev>\n" "part list <interface> <dev>\n"
" - print a device's partition table" " - print a device's partition table\n"
"part list <interface> <dev> <varname>\n"
" - set environment variable to the list of partitions"
); );