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  * See file CREDITS for list of people who contributed to this
  17  * project.
  18  *
  19  * This program is free software; you can redistribute it and/or
  20  * modify it under the terms of the GNU General Public License as
  21  * published by the Free Software Foundation; either version 2 of
  22  * the License, or (at your option) any later version.
  23  *
  24  * This program is distributed in the hope that it will be useful,
  25  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  26  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  27  * GNU General Public License for more details.
  28  *
  29  * You should have received a copy of the GNU General Public License
  30  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  31  */
  32
  33 #include <common.h>
  34 #include <config.h>
  35 #include <command.h>
  36 #include <part.h>
  37 #include <vsprintf.h>
  38
  39 #ifndef CONFIG_PARTITION_UUIDS
  40 #error CONFIG_PARTITION_UUIDS must be enabled for CONFIG_CMD_PART to be enabled
  41 #endif
  42
  43 int do_part_uuid(int argc, char * const argv[])
  44 {
  45         int part;
  46         block_dev_desc_t *dev_desc;
  47         disk_partition_t info;
  48
  49         if (argc < 2)
  50                 return CMD_RET_USAGE;
  51         if (argc > 3)
  52                 return CMD_RET_USAGE;
  53
  54         part = get_device_and_partition(argv[0], argv[1], &dev_desc, &info, 0);
  55         if (part < 0)
  56                 return 1;
  57
  58         if (argc > 2)
  59                 setenv(argv[2], info.uuid);
  60         else
  61                 printf("%s\n", info.uuid);
  62
  63         return 0;
  64 }
  65
  66 int do_part_list(int argc, char * const argv[])
  67 {
  68         int ret;
  69         block_dev_desc_t *desc;
  70
  71         if (argc != 2)
  72                 return CMD_RET_USAGE;
  73
  74         ret = get_device(argv[0], argv[1], &desc);
  75         if (ret < 0)
  76                 return 1;
  77
  78         print_part(desc);
  79
  80         return 0;
  81 }
  82
  83 int do_part(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  84 {
  85         if (argc < 2)
  86                 return CMD_RET_USAGE;
  87
  88         if (!strcmp(argv[1], "uuid"))
  89                 return do_part_uuid(argc - 2, argv + 2);
  90         else if (!strcmp(argv[1], "list"))
  91                 return do_part_list(argc - 2, argv + 2);
  92
  93         return CMD_RET_USAGE;
  94 }
  95
  96 U_BOOT_CMD(
  97         part,   5,      1,      do_part,
  98         "disk partition related commands",
  99         "uuid <interface> <dev>:<part>\n"
 100         "    - print partition UUID\n"
 101         "part uuid <interface> <dev>:<part> <varname>\n"
 102         "    - set environment variable to partition UUID\n"
 103         "part list <interface> <dev>\n"
 104         "    - print a device's partition table"
 105 );