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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 | static int do_part_uuid(int argc, char * const argv[]) | |
30 | { | |
31 | int part; | |
32 | struct blk_desc *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 = blk_get_device_part_str(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 | static int do_part_list(int argc, char * const argv[]) | |
53 | { | |
54 | int ret; | |
55 | struct blk_desc *desc; | |
56 | char *var = NULL; | |
57 | bool bootable = false; | |
58 | int i; | |
59 | ||
60 | if (argc < 2) | |
61 | return CMD_RET_USAGE; | |
62 | ||
63 | if (argc > 2) { | |
64 | for (i = 2; i < argc ; i++) { | |
65 | if (argv[i][0] == '-') { | |
66 | if (!strcmp(argv[i], "-bootable")) { | |
67 | bootable = true; | |
68 | } else { | |
69 | printf("Unknown option %s\n", argv[i]); | |
70 | return CMD_RET_USAGE; | |
71 | } | |
72 | } else { | |
73 | var = argv[i]; | |
74 | break; | |
75 | } | |
76 | } | |
77 | ||
78 | /* Loops should have been exited at the last argument, which | |
79 | * as it contained the variable */ | |
80 | if (argc != i + 1) | |
81 | return CMD_RET_USAGE; | |
82 | } | |
83 | ||
84 | ret = blk_get_device_by_str(argv[0], argv[1], &desc); | |
85 | if (ret < 0) | |
86 | return 1; | |
87 | ||
88 | if (var != NULL) { | |
89 | int p; | |
90 | char str[512] = { '\0', }; | |
91 | disk_partition_t info; | |
92 | ||
93 | for (p = 1; p < 128; p++) { | |
94 | char t[5]; | |
95 | int r = part_get_info(desc, p, &info); | |
96 | ||
97 | if (r != 0) | |
98 | continue; | |
99 | ||
100 | if (bootable && !info.bootable) | |
101 | continue; | |
102 | ||
103 | sprintf(t, "%s%x", str[0] ? " " : "", p); | |
104 | strcat(str, t); | |
105 | } | |
106 | setenv(var, str); | |
107 | return 0; | |
108 | } | |
109 | ||
110 | part_print(desc); | |
111 | ||
112 | return 0; | |
113 | } | |
114 | ||
115 | static int do_part_start(int argc, char * const argv[]) | |
116 | { | |
117 | struct blk_desc *desc; | |
118 | disk_partition_t info; | |
119 | char buf[512] = { 0 }; | |
120 | int part; | |
121 | int err; | |
122 | int ret; | |
123 | ||
124 | if (argc < 3) | |
125 | return CMD_RET_USAGE; | |
126 | if (argc > 4) | |
127 | return CMD_RET_USAGE; | |
128 | ||
129 | part = simple_strtoul(argv[2], NULL, 0); | |
130 | ||
131 | ret = blk_get_device_by_str(argv[0], argv[1], &desc); | |
132 | if (ret < 0) | |
133 | return 1; | |
134 | ||
135 | err = part_get_info(desc, part, &info); | |
136 | if (err) | |
137 | return 1; | |
138 | ||
139 | snprintf(buf, sizeof(buf), LBAF, info.start); | |
140 | ||
141 | if (argc > 3) | |
142 | setenv(argv[3], buf); | |
143 | else | |
144 | printf("%s\n", buf); | |
145 | ||
146 | return 0; | |
147 | } | |
148 | ||
149 | static int do_part_size(int argc, char * const argv[]) | |
150 | { | |
151 | struct blk_desc *desc; | |
152 | disk_partition_t info; | |
153 | char buf[512] = { 0 }; | |
154 | int part; | |
155 | int err; | |
156 | int ret; | |
157 | ||
158 | if (argc < 3) | |
159 | return CMD_RET_USAGE; | |
160 | if (argc > 4) | |
161 | return CMD_RET_USAGE; | |
162 | ||
163 | part = simple_strtoul(argv[2], NULL, 0); | |
164 | ||
165 | ret = blk_get_device_by_str(argv[0], argv[1], &desc); | |
166 | if (ret < 0) | |
167 | return 1; | |
168 | ||
169 | err = part_get_info(desc, part, &info); | |
170 | if (err) | |
171 | return 1; | |
172 | ||
173 | snprintf(buf, sizeof(buf), LBAF, info.size); | |
174 | ||
175 | if (argc > 3) | |
176 | setenv(argv[3], buf); | |
177 | else | |
178 | printf("%s\n", buf); | |
179 | ||
180 | return 0; | |
181 | } | |
182 | ||
183 | static int do_part(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
184 | { | |
185 | if (argc < 2) | |
186 | return CMD_RET_USAGE; | |
187 | ||
188 | if (!strcmp(argv[1], "uuid")) | |
189 | return do_part_uuid(argc - 2, argv + 2); | |
190 | else if (!strcmp(argv[1], "list")) | |
191 | return do_part_list(argc - 2, argv + 2); | |
192 | else if (!strcmp(argv[1], "start")) | |
193 | return do_part_start(argc - 2, argv + 2); | |
194 | else if (!strcmp(argv[1], "size")) | |
195 | return do_part_size(argc - 2, argv + 2); | |
196 | ||
197 | return CMD_RET_USAGE; | |
198 | } | |
199 | ||
200 | U_BOOT_CMD( | |
201 | part, CONFIG_SYS_MAXARGS, 1, do_part, | |
202 | "disk partition related commands", | |
203 | "uuid <interface> <dev>:<part>\n" | |
204 | " - print partition UUID\n" | |
205 | "part uuid <interface> <dev>:<part> <varname>\n" | |
206 | " - set environment variable to partition UUID\n" | |
207 | "part list <interface> <dev>\n" | |
208 | " - print a device's partition table\n" | |
209 | "part list <interface> <dev> [flags] <varname>\n" | |
210 | " - set environment variable to the list of partitions\n" | |
211 | " flags can be -bootable (list only bootable partitions)\n" | |
212 | "part start <interface> <dev> <part> <varname>\n" | |
213 | " - set environment variable to the start of the partition (in blocks)\n" | |
214 | "part size <interface> <dev> <part> <varname>\n" | |
215 | " - set environment variable to the size of the partition (in blocks)" | |
216 | ); |