blob: 24571ef5fbf0557b6aff559a0ced5aa8bbcddb65 [file] [log] [blame]
Tom Rini10e47792018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Jason Hobbs6e39cce2011-08-23 11:06:56 +00002/*
3 * Copyright 2011 Calxeda, Inc.
Jason Hobbs6e39cce2011-08-23 11:06:56 +00004 */
5
Przemyslaw Marczak2eb40ee2014-04-02 10:20:05 +02006#include <common.h>
Simon Glassed38aef2020-05-10 11:40:03 -06007#include <command.h>
Heinrich Schuchardta4628b42022-01-16 14:10:23 +01008#include <efi_api.h>
Simon Glass5e6201b2019-08-01 09:46:51 -06009#include <env.h>
Simon Glass274e0b02020-05-10 11:39:56 -060010#include <rand.h>
Simon Glass495a5dc2019-11-14 12:57:30 -070011#include <time.h>
Simon Glass6f044982020-05-10 11:39:52 -060012#include <uuid.h>
Jason Hobbs6e39cce2011-08-23 11:06:56 +000013#include <linux/ctype.h>
Przemyslaw Marczakfa907342014-04-02 10:20:02 +020014#include <errno.h>
15#include <common.h>
Przemyslaw Marczak0c813362014-04-02 10:20:03 +020016#include <asm/io.h>
17#include <part_efi.h>
18#include <malloc.h>
Matthias Bruggerd03560b2020-12-18 10:28:03 +010019#include <dm/uclass.h>
20#include <rng.h>
Jason Hobbs6e39cce2011-08-23 11:06:56 +000021
22/*
Przemyslaw Marczakfa907342014-04-02 10:20:02 +020023 * UUID - Universally Unique IDentifier - 128 bits unique number.
24 * There are 5 versions and one variant of UUID defined by RFC4122
Przemyslaw Marczakb4285142014-04-02 10:20:04 +020025 * specification. A UUID contains a set of fields. The set varies
26 * depending on the version of the UUID, as shown below:
27 * - time, MAC address(v1),
28 * - user ID(v2),
29 * - MD5 of name or URL(v3),
30 * - random data(v4),
31 * - SHA-1 of name or URL(v5),
32 *
33 * Layout of UUID:
34 * timestamp - 60-bit: time_low, time_mid, time_hi_and_version
35 * version - 4 bit (bit 4 through 7 of the time_hi_and_version)
36 * clock seq - 14 bit: clock_seq_hi_and_reserved, clock_seq_low
37 * variant: - bit 6 and 7 of clock_seq_hi_and_reserved
38 * node - 48 bit
39 *
40 * source: https://www.ietf.org/rfc/rfc4122.txt
Przemyslaw Marczakfa907342014-04-02 10:20:02 +020041 *
42 * UUID binary format (16 bytes):
43 *
44 * 4B-2B-2B-2B-6B (big endian - network byte order)
45 *
46 * UUID string is 36 length of characters (36 bytes):
47 *
48 * 0 9 14 19 24
49 * xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
50 * be be be be be
51 *
52 * where x is a hexadecimal character. Fields are separated by '-'s.
53 * When converting to a binary UUID, le means the field should be converted
54 * to little endian and be means it should be converted to big endian.
Jason Hobbs6e39cce2011-08-23 11:06:56 +000055 *
Przemyslaw Marczakfa907342014-04-02 10:20:02 +020056 * UUID is also used as GUID (Globally Unique Identifier) with the same binary
57 * format but it differs in string format like below.
Jason Hobbs6e39cce2011-08-23 11:06:56 +000058 *
Przemyslaw Marczakfa907342014-04-02 10:20:02 +020059 * GUID:
Jason Hobbs6e39cce2011-08-23 11:06:56 +000060 * 0 9 14 19 24
61 * xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
62 * le le le be be
Przemyslaw Marczakfa907342014-04-02 10:20:02 +020063 *
64 * GUID is used e.g. in GPT (GUID Partition Table) as a partiions unique id.
Jason Hobbs6e39cce2011-08-23 11:06:56 +000065 */
Jason Hobbs6e39cce2011-08-23 11:06:56 +000066int uuid_str_valid(const char *uuid)
67{
68 int i, valid;
69
70 if (uuid == NULL)
71 return 0;
72
73 for (i = 0, valid = 1; uuid[i] && valid; i++) {
74 switch (i) {
75 case 8: case 13: case 18: case 23:
76 valid = (uuid[i] == '-');
77 break;
78 default:
79 valid = isxdigit(uuid[i]);
80 break;
81 }
82 }
83
Przemyslaw Marczak0c813362014-04-02 10:20:03 +020084 if (i != UUID_STR_LEN || !valid)
Jason Hobbs6e39cce2011-08-23 11:06:56 +000085 return 0;
86
87 return 1;
88}
89
Patrick Delaunay65f94ed2015-10-27 11:00:28 +010090static const struct {
91 const char *string;
92 efi_guid_t guid;
93} list_guid[] = {
Heinrich Schuchardt0a13b792022-01-16 11:55:39 +010094#ifdef CONFIG_PARTITION_TYPE_GUID
Patrick Delaunay65f94ed2015-10-27 11:00:28 +010095 {"system", PARTITION_SYSTEM_GUID},
96 {"mbr", LEGACY_MBR_PARTITION_GUID},
97 {"msft", PARTITION_MSFT_RESERVED_GUID},
98 {"data", PARTITION_BASIC_DATA_GUID},
99 {"linux", PARTITION_LINUX_FILE_SYSTEM_DATA_GUID},
100 {"raid", PARTITION_LINUX_RAID_GUID},
101 {"swap", PARTITION_LINUX_SWAP_GUID},
Rasmus Villemoesdad0b632020-11-20 11:45:36 +0100102 {"lvm", PARTITION_LINUX_LVM_GUID},
103 {"u-boot-env", PARTITION_U_BOOT_ENVIRONMENT},
Heinrich Schuchardt0a13b792022-01-16 11:55:39 +0100104#endif
Heinrich Schuchardta4628b42022-01-16 14:10:23 +0100105#ifdef CONFIG_CMD_EFIDEBUG
106 {
107 "Device Path",
108 EFI_DEVICE_PATH_PROTOCOL_GUID,
109 },
110 {
111 "Device Path To Text",
112 EFI_DEVICE_PATH_TO_TEXT_PROTOCOL_GUID,
113 },
114 {
115 "Device Path Utilities",
116 EFI_DEVICE_PATH_UTILITIES_PROTOCOL_GUID,
117 },
118 {
119 "Unicode Collation 2",
120 EFI_UNICODE_COLLATION_PROTOCOL2_GUID,
121 },
122 {
123 "Driver Binding",
124 EFI_DRIVER_BINDING_PROTOCOL_GUID,
125 },
126 {
127 "Simple Text Input",
128 EFI_SIMPLE_TEXT_INPUT_PROTOCOL_GUID,
129 },
130 {
131 "Simple Text Input Ex",
132 EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL_GUID,
133 },
134 {
135 "Simple Text Output",
136 EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL_GUID,
137 },
138 {
139 "Block IO",
140 EFI_BLOCK_IO_PROTOCOL_GUID,
141 },
142 {
143 "Simple File System",
144 EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID,
145 },
146 {
147 "Loaded Image",
148 EFI_LOADED_IMAGE_PROTOCOL_GUID,
149 },
150 {
151 "Graphics Output",
152 EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID,
153 },
154 {
155 "HII String",
156 EFI_HII_STRING_PROTOCOL_GUID,
157 },
158 {
159 "HII Database",
160 EFI_HII_DATABASE_PROTOCOL_GUID,
161 },
162 {
163 "HII Config Routing",
164 EFI_HII_CONFIG_ROUTING_PROTOCOL_GUID,
165 },
166 {
167 "Load File2",
168 EFI_LOAD_FILE2_PROTOCOL_GUID,
169 },
170 {
171 "Random Number Generator",
172 EFI_RNG_PROTOCOL_GUID,
173 },
174 {
175 "Simple Network",
176 EFI_SIMPLE_NETWORK_PROTOCOL_GUID,
177 },
178 {
179 "PXE Base Code",
180 EFI_PXE_BASE_CODE_PROTOCOL_GUID,
181 },
182 {
183 "Device-Tree Fixup",
184 EFI_DT_FIXUP_PROTOCOL_GUID,
185 },
186 {
Heinrich Schuchardtd2a7d122022-01-16 17:46:38 +0100187 "TCG2",
188 EFI_TCG2_PROTOCOL_GUID,
189 },
190 {
Heinrich Schuchardta4628b42022-01-16 14:10:23 +0100191 "System Partition",
192 PARTITION_SYSTEM_GUID
193 },
194 {
195 "Firmware Management",
196 EFI_FIRMWARE_MANAGEMENT_PROTOCOL_GUID
197 },
198 /* Configuration table GUIDs */
199 {
200 "ACPI table",
201 EFI_ACPI_TABLE_GUID,
202 },
203 {
204 "EFI System Resource Table",
205 EFI_SYSTEM_RESOURCE_TABLE_GUID,
206 },
207 {
208 "device tree",
209 EFI_FDT_GUID,
210 },
211 {
212 "SMBIOS table",
213 SMBIOS_TABLE_GUID,
214 },
215 {
216 "Runtime properties",
217 EFI_RT_PROPERTIES_TABLE_GUID,
218 },
219 {
220 "TCG2 Final Events Table",
221 EFI_TCG2_FINAL_EVENTS_TABLE_GUID,
222 },
223#endif
Heinrich Schuchardt1bebcb62022-01-16 14:53:37 +0100224#ifdef CONFIG_CMD_NVEDIT_EFI
225 /* signature database */
226 {
227 "EFI_GLOBAL_VARIABLE_GUID",
228 EFI_GLOBAL_VARIABLE_GUID,
229 },
230 {
231 "EFI_IMAGE_SECURITY_DATABASE_GUID",
232 EFI_IMAGE_SECURITY_DATABASE_GUID,
233 },
234 /* certificate types */
235 {
236 "EFI_CERT_SHA256_GUID",
237 EFI_CERT_SHA256_GUID,
238 },
239 {
240 "EFI_CERT_X509_GUID",
241 EFI_CERT_X509_GUID,
242 },
243 {
244 "EFI_CERT_TYPE_PKCS7_GUID",
245 EFI_CERT_TYPE_PKCS7_GUID,
246 },
247#endif
Patrick Delaunay65f94ed2015-10-27 11:00:28 +0100248};
249
250/*
251 * uuid_guid_get_bin() - this function get GUID bin for string
252 *
253 * @param guid_str - pointer to partition type string
254 * @param guid_bin - pointer to allocated array for big endian output [16B]
255 */
256int uuid_guid_get_bin(const char *guid_str, unsigned char *guid_bin)
257{
258 int i;
259
260 for (i = 0; i < ARRAY_SIZE(list_guid); i++) {
261 if (!strcmp(list_guid[i].string, guid_str)) {
262 memcpy(guid_bin, &list_guid[i].guid, 16);
263 return 0;
264 }
265 }
266 return -ENODEV;
267}
268
269/*
270 * uuid_guid_get_str() - this function get string for GUID.
271 *
272 * @param guid_bin - pointer to string with partition type guid [16B]
Rasmus Villemoes7b70bdc2020-11-20 11:45:35 +0100273 *
274 * Returns NULL if the type GUID is not known.
Patrick Delaunay65f94ed2015-10-27 11:00:28 +0100275 */
Rasmus Villemoes7b70bdc2020-11-20 11:45:35 +0100276const char *uuid_guid_get_str(const unsigned char *guid_bin)
Patrick Delaunay65f94ed2015-10-27 11:00:28 +0100277{
278 int i;
279
Patrick Delaunay65f94ed2015-10-27 11:00:28 +0100280 for (i = 0; i < ARRAY_SIZE(list_guid); i++) {
281 if (!memcmp(list_guid[i].guid.b, guid_bin, 16)) {
Rasmus Villemoes7b70bdc2020-11-20 11:45:35 +0100282 return list_guid[i].string;
Patrick Delaunay65f94ed2015-10-27 11:00:28 +0100283 }
284 }
Rasmus Villemoes7b70bdc2020-11-20 11:45:35 +0100285 return NULL;
Patrick Delaunay65f94ed2015-10-27 11:00:28 +0100286}
Patrick Delaunay65f94ed2015-10-27 11:00:28 +0100287
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200288/*
289 * uuid_str_to_bin() - convert string UUID or GUID to big endian binary data.
290 *
Patrick Delaunay65f94ed2015-10-27 11:00:28 +0100291 * @param uuid_str - pointer to UUID or GUID string [37B] or GUID shorcut
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200292 * @param uuid_bin - pointer to allocated array for big endian output [16B]
293 * @str_format - UUID string format: 0 - UUID; 1 - GUID
294 */
Simon Glass4acd4f02020-04-08 08:32:58 -0600295int uuid_str_to_bin(const char *uuid_str, unsigned char *uuid_bin,
296 int str_format)
Jason Hobbs6e39cce2011-08-23 11:06:56 +0000297{
298 uint16_t tmp16;
299 uint32_t tmp32;
300 uint64_t tmp64;
301
Patrick Delaunay65f94ed2015-10-27 11:00:28 +0100302 if (!uuid_str_valid(uuid_str)) {
303#ifdef CONFIG_PARTITION_TYPE_GUID
304 if (!uuid_guid_get_bin(uuid_str, uuid_bin))
305 return 0;
306#endif
Przemyslaw Marczakfa907342014-04-02 10:20:02 +0200307 return -EINVAL;
Patrick Delaunay65f94ed2015-10-27 11:00:28 +0100308 }
Przemyslaw Marczakfa907342014-04-02 10:20:02 +0200309
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200310 if (str_format == UUID_STR_FORMAT_STD) {
Simon Glass3ff49ec2021-07-24 09:03:29 -0600311 tmp32 = cpu_to_be32(hextoul(uuid_str, NULL));
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200312 memcpy(uuid_bin, &tmp32, 4);
Jason Hobbs6e39cce2011-08-23 11:06:56 +0000313
Simon Glass3ff49ec2021-07-24 09:03:29 -0600314 tmp16 = cpu_to_be16(hextoul(uuid_str + 9, NULL));
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200315 memcpy(uuid_bin + 4, &tmp16, 2);
Jason Hobbs6e39cce2011-08-23 11:06:56 +0000316
Simon Glass3ff49ec2021-07-24 09:03:29 -0600317 tmp16 = cpu_to_be16(hextoul(uuid_str + 14, NULL));
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200318 memcpy(uuid_bin + 6, &tmp16, 2);
319 } else {
Simon Glass3ff49ec2021-07-24 09:03:29 -0600320 tmp32 = cpu_to_le32(hextoul(uuid_str, NULL));
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200321 memcpy(uuid_bin, &tmp32, 4);
Jason Hobbs6e39cce2011-08-23 11:06:56 +0000322
Simon Glass3ff49ec2021-07-24 09:03:29 -0600323 tmp16 = cpu_to_le16(hextoul(uuid_str + 9, NULL));
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200324 memcpy(uuid_bin + 4, &tmp16, 2);
Jason Hobbs6e39cce2011-08-23 11:06:56 +0000325
Simon Glass3ff49ec2021-07-24 09:03:29 -0600326 tmp16 = cpu_to_le16(hextoul(uuid_str + 14, NULL));
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200327 memcpy(uuid_bin + 6, &tmp16, 2);
328 }
329
Simon Glass3ff49ec2021-07-24 09:03:29 -0600330 tmp16 = cpu_to_be16(hextoul(uuid_str + 19, NULL));
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200331 memcpy(uuid_bin + 8, &tmp16, 2);
Jason Hobbs6e39cce2011-08-23 11:06:56 +0000332
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200333 tmp64 = cpu_to_be64(simple_strtoull(uuid_str + 24, NULL, 16));
334 memcpy(uuid_bin + 10, (char *)&tmp64 + 2, 6);
Przemyslaw Marczakfa907342014-04-02 10:20:02 +0200335
336 return 0;
337}
338
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200339/*
340 * uuid_bin_to_str() - convert big endian binary data to string UUID or GUID.
341 *
Heinrich Schuchardt6f035662019-04-29 08:08:43 +0200342 * @param uuid_bin: pointer to binary data of UUID (big endian) [16B]
343 * @param uuid_str: pointer to allocated array for output string [37B]
344 * @str_format: bit 0: 0 - UUID; 1 - GUID
345 * bit 1: 0 - lower case; 2 - upper case
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200346 */
Simon Glass4acd4f02020-04-08 08:32:58 -0600347void uuid_bin_to_str(const unsigned char *uuid_bin, char *uuid_str,
348 int str_format)
Przemyslaw Marczakfa907342014-04-02 10:20:02 +0200349{
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200350 const u8 uuid_char_order[UUID_BIN_LEN] = {0, 1, 2, 3, 4, 5, 6, 7, 8,
351 9, 10, 11, 12, 13, 14, 15};
352 const u8 guid_char_order[UUID_BIN_LEN] = {3, 2, 1, 0, 5, 4, 7, 6, 8,
353 9, 10, 11, 12, 13, 14, 15};
354 const u8 *char_order;
Heinrich Schuchardt6f035662019-04-29 08:08:43 +0200355 const char *format;
Przemyslaw Marczakfa907342014-04-02 10:20:02 +0200356 int i;
357
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200358 /*
359 * UUID and GUID bin data - always in big endian:
360 * 4B-2B-2B-2B-6B
361 * be be be be be
362 */
Heinrich Schuchardt6f035662019-04-29 08:08:43 +0200363 if (str_format & UUID_STR_FORMAT_GUID)
364 char_order = guid_char_order;
365 else
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200366 char_order = uuid_char_order;
Heinrich Schuchardt6f035662019-04-29 08:08:43 +0200367 if (str_format & UUID_STR_UPPER_CASE)
368 format = "%02X";
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200369 else
Heinrich Schuchardt6f035662019-04-29 08:08:43 +0200370 format = "%02x";
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200371
Przemyslaw Marczakfa907342014-04-02 10:20:02 +0200372 for (i = 0; i < 16; i++) {
Heinrich Schuchardt6f035662019-04-29 08:08:43 +0200373 sprintf(uuid_str, format, uuid_bin[char_order[i]]);
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200374 uuid_str += 2;
Przemyslaw Marczakfa907342014-04-02 10:20:02 +0200375 switch (i) {
376 case 3:
377 case 5:
378 case 7:
379 case 9:
Przemyslaw Marczak0c813362014-04-02 10:20:03 +0200380 *uuid_str++ = '-';
Przemyslaw Marczakfa907342014-04-02 10:20:02 +0200381 break;
382 }
383 }
Jason Hobbs6e39cce2011-08-23 11:06:56 +0000384}
Przemyslaw Marczakb4285142014-04-02 10:20:04 +0200385
386/*
387 * gen_rand_uuid() - this function generates a random binary UUID version 4.
388 * In this version all fields beside 4 bits of version and
389 * 2 bits of variant are randomly generated.
390 *
391 * @param uuid_bin - pointer to allocated array [16B]. Output is in big endian.
392*/
Przemyslaw Marczak2eb40ee2014-04-02 10:20:05 +0200393#if defined(CONFIG_RANDOM_UUID) || defined(CONFIG_CMD_UUID)
Przemyslaw Marczakb4285142014-04-02 10:20:04 +0200394void gen_rand_uuid(unsigned char *uuid_bin)
395{
Heinrich Schuchardt1c126e22019-07-14 23:31:50 +0200396 u32 ptr[4];
397 struct uuid *uuid = (struct uuid *)ptr;
Matthias Bruggerd03560b2020-12-18 10:28:03 +0100398 int i, ret;
399 struct udevice *devp;
400 u32 randv = 0;
Przemyslaw Marczakb4285142014-04-02 10:20:04 +0200401
Matthias Bruggerd03560b2020-12-18 10:28:03 +0100402 if (IS_ENABLED(CONFIG_DM_RNG)) {
403 ret = uclass_get_device(UCLASS_RNG, 0, &devp);
Patrick Delaunaya6064f72021-10-22 17:05:47 +0200404 if (!ret) {
Matthias Bruggerd03560b2020-12-18 10:28:03 +0100405 ret = dm_rng_read(devp, &randv, sizeof(randv));
406 if (ret < 0)
407 randv = 0;
408 }
409 }
410 if (randv)
411 srand(randv);
412 else
413 srand(get_ticks() + rand());
Eugeniu Rosca9d74ba62019-05-02 14:27:06 +0200414
Przemyslaw Marczakb4285142014-04-02 10:20:04 +0200415 /* Set all fields randomly */
Heinrich Schuchardt1c126e22019-07-14 23:31:50 +0200416 for (i = 0; i < 4; i++)
417 ptr[i] = rand();
Przemyslaw Marczakb4285142014-04-02 10:20:04 +0200418
Heinrich Schuchardt1c126e22019-07-14 23:31:50 +0200419 clrsetbits_be16(&uuid->time_hi_and_version,
Przemyslaw Marczakb4285142014-04-02 10:20:04 +0200420 UUID_VERSION_MASK,
421 UUID_VERSION << UUID_VERSION_SHIFT);
422
Heinrich Schuchardt1c126e22019-07-14 23:31:50 +0200423 clrsetbits_8(&uuid->clock_seq_hi_and_reserved,
Przemyslaw Marczakb4285142014-04-02 10:20:04 +0200424 UUID_VARIANT_MASK,
425 UUID_VARIANT << UUID_VARIANT_SHIFT);
426
Heinrich Schuchardt1c126e22019-07-14 23:31:50 +0200427 memcpy(uuid_bin, uuid, 16);
Przemyslaw Marczakb4285142014-04-02 10:20:04 +0200428}
429
430/*
431 * gen_rand_uuid_str() - this function generates UUID v4 (random) in two string
432 * formats UUID or GUID.
433 *
434 * @param uuid_str - pointer to allocated array [37B].
435 * @param - uuid output type: UUID - 0, GUID - 1
436 */
437void gen_rand_uuid_str(char *uuid_str, int str_format)
438{
439 unsigned char uuid_bin[UUID_BIN_LEN];
440
441 /* Generate UUID (big endian) */
442 gen_rand_uuid(uuid_bin);
443
444 /* Convert UUID bin to UUID or GUID formated STRING */
445 uuid_bin_to_str(uuid_bin, uuid_str, str_format);
446}
Przemyslaw Marczak2eb40ee2014-04-02 10:20:05 +0200447
Marek Vasut51d85f62019-01-07 21:23:38 +0100448#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_CMD_UUID)
Simon Glassed38aef2020-05-10 11:40:03 -0600449int do_uuid(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
Przemyslaw Marczak2eb40ee2014-04-02 10:20:05 +0200450{
451 char uuid[UUID_STR_LEN + 1];
452 int str_format;
453
454 if (!strcmp(argv[0], "uuid"))
455 str_format = UUID_STR_FORMAT_STD;
456 else
457 str_format = UUID_STR_FORMAT_GUID;
458
459 if (argc > 2)
460 return CMD_RET_USAGE;
461
462 gen_rand_uuid_str(uuid, str_format);
463
464 if (argc == 1)
465 printf("%s\n", uuid);
466 else
Simon Glass6a38e412017-08-03 12:22:09 -0600467 env_set(argv[1], uuid);
Przemyslaw Marczak2eb40ee2014-04-02 10:20:05 +0200468
469 return CMD_RET_SUCCESS;
470}
471
472U_BOOT_CMD(uuid, CONFIG_SYS_MAXARGS, 1, do_uuid,
473 "UUID - generate random Universally Unique Identifier",
474 "[<varname>]\n"
475 "Argument:\n"
476 "varname: for set result in a environment variable\n"
477 "e.g. uuid uuid_env"
478);
479
480U_BOOT_CMD(guid, CONFIG_SYS_MAXARGS, 1, do_uuid,
481 "GUID - generate Globally Unique Identifier based on random UUID",
482 "[<varname>]\n"
483 "Argument:\n"
484 "varname: for set result in a environment variable\n"
485 "e.g. guid guid_env"
486);
Przemyslaw Marczak5ec2ed22014-04-02 10:20:06 +0200487#endif /* CONFIG_CMD_UUID */
488#endif /* CONFIG_RANDOM_UUID || CONFIG_CMD_UUID */