fw_env: fix writing environment for mtd devices
[platform/kernel/u-boot.git] / common / cmd_part.c
1 /*
2  * Copyright (c) 2012, NVIDIA CORPORATION.  All rights reserved.
3  *
4  * made from cmd_ext2, which was:
5  *
6  * (C) Copyright 2004
7  * esd gmbh <www.esd-electronics.com>
8  * Reinhard Arlt <reinhard.arlt@esd-electronics.com>
9  *
10  * made from cmd_reiserfs by
11  *
12  * (C) Copyright 2003 - 2004
13  * Sysgo Real-Time Solutions, AG <www.elinos.com>
14  * Pavel Bartusek <pba@sysgo.com>
15  *
16  * SPDX-License-Identifier:     GPL-2.0+
17  */
18
19 #include <common.h>
20 #include <config.h>
21 #include <command.h>
22 #include <part.h>
23 #include <vsprintf.h>
24
25 #ifndef CONFIG_PARTITION_UUIDS
26 #error CONFIG_PARTITION_UUIDS must be enabled for CONFIG_CMD_PART to be enabled
27 #endif
28
29 int do_part_uuid(int argc, char * const argv[])
30 {
31         int part;
32         block_dev_desc_t *dev_desc;
33         disk_partition_t info;
34
35         if (argc < 2)
36                 return CMD_RET_USAGE;
37         if (argc > 3)
38                 return CMD_RET_USAGE;
39
40         part = get_device_and_partition(argv[0], argv[1], &dev_desc, &info, 0);
41         if (part < 0)
42                 return 1;
43
44         if (argc > 2)
45                 setenv(argv[2], info.uuid);
46         else
47                 printf("%s\n", info.uuid);
48
49         return 0;
50 }
51
52 int do_part_list(int argc, char * const argv[])
53 {
54         int ret;
55         block_dev_desc_t *desc;
56
57         if (argc != 2)
58                 return CMD_RET_USAGE;
59
60         ret = get_device(argv[0], argv[1], &desc);
61         if (ret < 0)
62                 return 1;
63
64         print_part(desc);
65
66         return 0;
67 }
68
69 int do_part(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
70 {
71         if (argc < 2)
72                 return CMD_RET_USAGE;
73
74         if (!strcmp(argv[1], "uuid"))
75                 return do_part_uuid(argc - 2, argv + 2);
76         else if (!strcmp(argv[1], "list"))
77                 return do_part_list(argc - 2, argv + 2);
78
79         return CMD_RET_USAGE;
80 }
81
82 U_BOOT_CMD(
83         part,   5,      1,      do_part,
84         "disk partition related commands",
85         "uuid <interface> <dev>:<part>\n"
86         "    - print partition UUID\n"
87         "part uuid <interface> <dev>:<part> <varname>\n"
88         "    - set environment variable to partition UUID\n"
89         "part list <interface> <dev>\n"
90         "    - print a device's partition table"
91 );