efi_loader: Expose ascending efi memory map
[platform/kernel/u-boot.git] / 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 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 );