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 static int do_part_uuid(int argc, char * const argv[]) 26 { 27 int part; 28 struct blk_desc *dev_desc; 29 disk_partition_t info; 30 31 if (argc < 2) 32 return CMD_RET_USAGE; 33 if (argc > 3) 34 return CMD_RET_USAGE; 35 36 part = blk_get_device_part_str(argv[0], argv[1], &dev_desc, &info, 0); 37 if (part < 0) 38 return 1; 39 40 if (argc > 2) 41 setenv(argv[2], info.uuid); 42 else 43 printf("%s\n", info.uuid); 44 45 return 0; 46 } 47 48 static int do_part_list(int argc, char * const argv[]) 49 { 50 int ret; 51 struct blk_desc *desc; 52 char *var = NULL; 53 bool bootable = false; 54 int i; 55 56 if (argc < 2) 57 return CMD_RET_USAGE; 58 59 if (argc > 2) { 60 for (i = 2; i < argc ; i++) { 61 if (argv[i][0] == '-') { 62 if (!strcmp(argv[i], "-bootable")) { 63 bootable = true; 64 } else { 65 printf("Unknown option %s\n", argv[i]); 66 return CMD_RET_USAGE; 67 } 68 } else { 69 var = argv[i]; 70 break; 71 } 72 } 73 74 /* Loops should have been exited at the last argument, which 75 * as it contained the variable */ 76 if (argc != i + 1) 77 return CMD_RET_USAGE; 78 } 79 80 ret = blk_get_device_by_str(argv[0], argv[1], &desc); 81 if (ret < 0) 82 return 1; 83 84 if (var != NULL) { 85 int p; 86 char str[512] = { '\0', }; 87 disk_partition_t info; 88 89 for (p = 1; p < 128; p++) { 90 char t[5]; 91 int r = part_get_info(desc, p, &info); 92 93 if (r != 0) 94 continue; 95 96 if (bootable && !info.bootable) 97 continue; 98 99 sprintf(t, "%s%x", str[0] ? " " : "", p); 100 strcat(str, t); 101 } 102 setenv(var, str); 103 return 0; 104 } 105 106 part_print(desc); 107 108 return 0; 109 } 110 111 static int do_part_start(int argc, char * const argv[]) 112 { 113 struct blk_desc *desc; 114 disk_partition_t info; 115 char buf[512] = { 0 }; 116 int part; 117 int err; 118 int ret; 119 120 if (argc < 3) 121 return CMD_RET_USAGE; 122 if (argc > 4) 123 return CMD_RET_USAGE; 124 125 part = simple_strtoul(argv[2], NULL, 0); 126 127 ret = blk_get_device_by_str(argv[0], argv[1], &desc); 128 if (ret < 0) 129 return 1; 130 131 err = part_get_info(desc, part, &info); 132 if (err) 133 return 1; 134 135 snprintf(buf, sizeof(buf), LBAF, info.start); 136 137 if (argc > 3) 138 setenv(argv[3], buf); 139 else 140 printf("%s\n", buf); 141 142 return 0; 143 } 144 145 static int do_part_size(int argc, char * const argv[]) 146 { 147 struct blk_desc *desc; 148 disk_partition_t info; 149 char buf[512] = { 0 }; 150 int part; 151 int err; 152 int ret; 153 154 if (argc < 3) 155 return CMD_RET_USAGE; 156 if (argc > 4) 157 return CMD_RET_USAGE; 158 159 part = simple_strtoul(argv[2], NULL, 0); 160 161 ret = blk_get_device_by_str(argv[0], argv[1], &desc); 162 if (ret < 0) 163 return 1; 164 165 err = part_get_info(desc, part, &info); 166 if (err) 167 return 1; 168 169 snprintf(buf, sizeof(buf), LBAF, info.size); 170 171 if (argc > 3) 172 setenv(argv[3], buf); 173 else 174 printf("%s\n", buf); 175 176 return 0; 177 } 178 179 static int do_part(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 180 { 181 if (argc < 2) 182 return CMD_RET_USAGE; 183 184 if (!strcmp(argv[1], "uuid")) 185 return do_part_uuid(argc - 2, argv + 2); 186 else if (!strcmp(argv[1], "list")) 187 return do_part_list(argc - 2, argv + 2); 188 else if (!strcmp(argv[1], "start")) 189 return do_part_start(argc - 2, argv + 2); 190 else if (!strcmp(argv[1], "size")) 191 return do_part_size(argc - 2, argv + 2); 192 193 return CMD_RET_USAGE; 194 } 195 196 U_BOOT_CMD( 197 part, CONFIG_SYS_MAXARGS, 1, do_part, 198 "disk partition related commands", 199 "uuid <interface> <dev>:<part>\n" 200 " - print partition UUID\n" 201 "part uuid <interface> <dev>:<part> <varname>\n" 202 " - set environment variable to partition UUID\n" 203 "part list <interface> <dev>\n" 204 " - print a device's partition table\n" 205 "part list <interface> <dev> [flags] <varname>\n" 206 " - set environment variable to the list of partitions\n" 207 " flags can be -bootable (list only bootable partitions)\n" 208 "part start <interface> <dev> <part> <varname>\n" 209 " - set environment variable to the start of the partition (in blocks)\n" 210 "part size <interface> <dev> <part> <varname>\n" 211 " - set environment variable to the size of the partition (in blocks)" 212 ); 213