[u-boot.git] / lib / uuid.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright 2011 Calxeda, Inc.
 */

#include <common.h>
#include <command.h>
#include <efi_api.h>
#include <env.h>
#include <rand.h>
#include <time.h>
#include <uuid.h>
#include <linux/ctype.h>
#include <errno.h>
#include <common.h>
#include <asm/io.h>
#include <part_efi.h>
#include <malloc.h>
#include <dm/uclass.h>
#include <rng.h>

/*
 * UUID - Universally Unique IDentifier - 128 bits unique number.
 *        There are 5 versions and one variant of UUID defined by RFC4122
 *        specification. A UUID contains a set of fields. The set varies
 *        depending on the version of the UUID, as shown below:
 *        - time, MAC address(v1),
 *        - user ID(v2),
 *        - MD5 of name or URL(v3),
 *        - random data(v4),
 *        - SHA-1 of name or URL(v5),
 *
 * Layout of UUID:
 * timestamp - 60-bit: time_low, time_mid, time_hi_and_version
 * version   - 4 bit (bit 4 through 7 of the time_hi_and_version)
 * clock seq - 14 bit: clock_seq_hi_and_reserved, clock_seq_low
 * variant:  - bit 6 and 7 of clock_seq_hi_and_reserved
 * node      - 48 bit
 *
 * source: https://www.ietf.org/rfc/rfc4122.txt
 *
 * UUID binary format (16 bytes):
 *
 * 4B-2B-2B-2B-6B (big endian - network byte order)
 *
 * UUID string is 36 length of characters (36 bytes):
 *
 * 0        9    14   19   24
 * xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
 *    be     be   be   be       be
 *
 * where x is a hexadecimal character. Fields are separated by '-'s.
 * When converting to a binary UUID, le means the field should be converted
 * to little endian and be means it should be converted to big endian.
 *
 * UUID is also used as GUID (Globally Unique Identifier) with the same binary
 * format but it differs in string format like below.
 *
 * GUID:
 * 0        9    14   19   24
 * xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
 *    le     le   le   be       be
 *
 * GUID is used e.g. in GPT (GUID Partition Table) as a partiions unique id.
 */
int uuid_str_valid(const char *uuid)
{
	int i, valid;

	if (uuid == NULL)
		return 0;

	for (i = 0, valid = 1; uuid[i] && valid; i++) {
		switch (i) {
		case 8: case 13: case 18: case 23:
			valid = (uuid[i] == '-');
			break;
		default:
			valid = isxdigit(uuid[i]);
			break;
		}
	}

	if (i != UUID_STR_LEN || !valid)
		return 0;

	return 1;
}

static const struct {
	const char *string;
	efi_guid_t guid;
} list_guid[] = {
#ifdef CONFIG_PARTITION_TYPE_GUID
	{"system",	PARTITION_SYSTEM_GUID},
	{"mbr",		LEGACY_MBR_PARTITION_GUID},
	{"msft",	PARTITION_MSFT_RESERVED_GUID},
	{"data",	PARTITION_BASIC_DATA_GUID},
	{"linux",	PARTITION_LINUX_FILE_SYSTEM_DATA_GUID},
	{"raid",	PARTITION_LINUX_RAID_GUID},
	{"swap",	PARTITION_LINUX_SWAP_GUID},
	{"lvm",		PARTITION_LINUX_LVM_GUID},
	{"u-boot-env",	PARTITION_U_BOOT_ENVIRONMENT},
#endif
#ifdef CONFIG_CMD_EFIDEBUG
	{
		"Device Path",
		EFI_DEVICE_PATH_PROTOCOL_GUID,
	},
	{
		"Device Path To Text",
		EFI_DEVICE_PATH_TO_TEXT_PROTOCOL_GUID,
	},
	{
		"Device Path Utilities",
		EFI_DEVICE_PATH_UTILITIES_PROTOCOL_GUID,
	},
	{
		"Unicode Collation 2",
		EFI_UNICODE_COLLATION_PROTOCOL2_GUID,
	},
	{
		"Driver Binding",
		EFI_DRIVER_BINDING_PROTOCOL_GUID,
	},
	{
		"Simple Text Input",
		EFI_SIMPLE_TEXT_INPUT_PROTOCOL_GUID,
	},
	{
		"Simple Text Input Ex",
		EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL_GUID,
	},
	{
		"Simple Text Output",
		EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL_GUID,
	},
	{
		"Block IO",
		EFI_BLOCK_IO_PROTOCOL_GUID,
	},
	{
		"Simple File System",
		EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID,
	},
	{
		"Loaded Image",
		EFI_LOADED_IMAGE_PROTOCOL_GUID,
	},
	{
		"Graphics Output",
		EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID,
	},
	{
		"HII String",
		EFI_HII_STRING_PROTOCOL_GUID,
	},
	{
		"HII Database",
		EFI_HII_DATABASE_PROTOCOL_GUID,
	},
	{
		"HII Config Routing",
		EFI_HII_CONFIG_ROUTING_PROTOCOL_GUID,
	},
	{
		"Load File2",
		EFI_LOAD_FILE2_PROTOCOL_GUID,
	},
	{
		"Random Number Generator",
		EFI_RNG_PROTOCOL_GUID,
	},
	{
		"Simple Network",
		EFI_SIMPLE_NETWORK_PROTOCOL_GUID,
	},
	{
		"PXE Base Code",
		EFI_PXE_BASE_CODE_PROTOCOL_GUID,
	},
	{
		"Device-Tree Fixup",
		EFI_DT_FIXUP_PROTOCOL_GUID,
	},
	{
		"TCG2",
		EFI_TCG2_PROTOCOL_GUID,
		},
	{
		"System Partition",
		PARTITION_SYSTEM_GUID
	},
	{
		"Firmware Management",
		EFI_FIRMWARE_MANAGEMENT_PROTOCOL_GUID
	},
	/* Configuration table GUIDs */
	{
		"ACPI table",
		EFI_ACPI_TABLE_GUID,
	},
	{
		"EFI System Resource Table",
		EFI_SYSTEM_RESOURCE_TABLE_GUID,
	},
	{
		"device tree",
		EFI_FDT_GUID,
	},
	{
		"SMBIOS table",
		SMBIOS_TABLE_GUID,
	},
	{
		"Runtime properties",
		EFI_RT_PROPERTIES_TABLE_GUID,
	},
	{
		"TCG2 Final Events Table",
		EFI_TCG2_FINAL_EVENTS_TABLE_GUID,
	},
#ifdef CONFIG_EFI_RISCV_BOOT_PROTOCOL
	{
		"RISC-V Boot",
		RISCV_EFI_BOOT_PROTOCOL_GUID,
	},
#endif
#endif /* CONFIG_CMD_EFIDEBUG */
#ifdef CONFIG_CMD_NVEDIT_EFI
	/* signature database */
	{
		"EFI_GLOBAL_VARIABLE_GUID",
		EFI_GLOBAL_VARIABLE_GUID,
	},
	{
		"EFI_IMAGE_SECURITY_DATABASE_GUID",
		EFI_IMAGE_SECURITY_DATABASE_GUID,
	},
	/* certificate types */
	{
		"EFI_CERT_SHA256_GUID",
		EFI_CERT_SHA256_GUID,
	},
	{
		"EFI_CERT_X509_GUID",
		EFI_CERT_X509_GUID,
	},
	{
		"EFI_CERT_TYPE_PKCS7_GUID",
		EFI_CERT_TYPE_PKCS7_GUID,
	},
#endif
};

/*
 * uuid_guid_get_bin() - this function get GUID bin for string
 *
 * @param guid_str - pointer to partition type string
 * @param guid_bin - pointer to allocated array for big endian output [16B]
 */
int uuid_guid_get_bin(const char *guid_str, unsigned char *guid_bin)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(list_guid); i++) {
		if (!strcmp(list_guid[i].string, guid_str)) {
			memcpy(guid_bin, &list_guid[i].guid, 16);
			return 0;
		}
	}
	return -ENODEV;
}

/*
 * uuid_guid_get_str() - this function get string for GUID.
 *
 * @param guid_bin - pointer to string with partition type guid [16B]
 *
 * Returns NULL if the type GUID is not known.
 */
const char *uuid_guid_get_str(const unsigned char *guid_bin)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(list_guid); i++) {
		if (!memcmp(list_guid[i].guid.b, guid_bin, 16)) {
			return list_guid[i].string;
		}
	}
	return NULL;
}

/*
 * uuid_str_to_bin() - convert string UUID or GUID to big endian binary data.
 *
 * @param uuid_str - pointer to UUID or GUID string [37B] or GUID shorcut
 * @param uuid_bin - pointer to allocated array for big endian output [16B]
 * @str_format     - UUID string format: 0 - UUID; 1 - GUID
 */
int uuid_str_to_bin(const char *uuid_str, unsigned char *uuid_bin,
		    int str_format)
{
	uint16_t tmp16;
	uint32_t tmp32;
	uint64_t tmp64;

	if (!uuid_str_valid(uuid_str)) {
#ifdef CONFIG_PARTITION_TYPE_GUID
		if (!uuid_guid_get_bin(uuid_str, uuid_bin))
			return 0;
#endif
		return -EINVAL;
	}

	if (str_format == UUID_STR_FORMAT_STD) {
		tmp32 = cpu_to_be32(hextoul(uuid_str, NULL));
		memcpy(uuid_bin, &tmp32, 4);

		tmp16 = cpu_to_be16(hextoul(uuid_str + 9, NULL));
		memcpy(uuid_bin + 4, &tmp16, 2);

		tmp16 = cpu_to_be16(hextoul(uuid_str + 14, NULL));
		memcpy(uuid_bin + 6, &tmp16, 2);
	} else {
		tmp32 = cpu_to_le32(hextoul(uuid_str, NULL));
		memcpy(uuid_bin, &tmp32, 4);

		tmp16 = cpu_to_le16(hextoul(uuid_str + 9, NULL));
		memcpy(uuid_bin + 4, &tmp16, 2);

		tmp16 = cpu_to_le16(hextoul(uuid_str + 14, NULL));
		memcpy(uuid_bin + 6, &tmp16, 2);
	}

	tmp16 = cpu_to_be16(hextoul(uuid_str + 19, NULL));
	memcpy(uuid_bin + 8, &tmp16, 2);

	tmp64 = cpu_to_be64(simple_strtoull(uuid_str + 24, NULL, 16));
	memcpy(uuid_bin + 10, (char *)&tmp64 + 2, 6);

	return 0;
}

/*
 * uuid_bin_to_str() - convert big endian binary data to string UUID or GUID.
 *
 * @param uuid_bin:	pointer to binary data of UUID (big endian) [16B]
 * @param uuid_str:	pointer to allocated array for output string [37B]
 * @str_format:		bit 0: 0 - UUID; 1 - GUID
 *			bit 1: 0 - lower case; 2 - upper case
 */
void uuid_bin_to_str(const unsigned char *uuid_bin, char *uuid_str,
		     int str_format)
{
	const u8 uuid_char_order[UUID_BIN_LEN] = {0, 1, 2, 3, 4, 5, 6, 7, 8,
						  9, 10, 11, 12, 13, 14, 15};
	const u8 guid_char_order[UUID_BIN_LEN] = {3, 2, 1, 0, 5, 4, 7, 6, 8,
						  9, 10, 11, 12, 13, 14, 15};
	const u8 *char_order;
	const char *format;
	int i;

	/*
	 * UUID and GUID bin data - always in big endian:
	 * 4B-2B-2B-2B-6B
	 * be be be be be
	 */
	if (str_format & UUID_STR_FORMAT_GUID)
		char_order = guid_char_order;
	else
		char_order = uuid_char_order;
	if (str_format & UUID_STR_UPPER_CASE)
		format = "%02X";
	else
		format = "%02x";

	for (i = 0; i < 16; i++) {
		sprintf(uuid_str, format, uuid_bin[char_order[i]]);
		uuid_str += 2;
		switch (i) {
		case 3:
		case 5:
		case 7:
		case 9:
			*uuid_str++ = '-';
			break;
		}
	}
}

/*
 * gen_rand_uuid() - this function generates a random binary UUID version 4.
 *                   In this version all fields beside 4 bits of version and
 *                   2 bits of variant are randomly generated.
 *
 * @param uuid_bin - pointer to allocated array [16B]. Output is in big endian.
*/
#if defined(CONFIG_RANDOM_UUID) || defined(CONFIG_CMD_UUID)
void gen_rand_uuid(unsigned char *uuid_bin)
{
	u32 ptr[4];
	struct uuid *uuid = (struct uuid *)ptr;
	int i, ret;
	struct udevice *devp;
	u32 randv = 0;

	if (IS_ENABLED(CONFIG_DM_RNG)) {
		ret = uclass_get_device(UCLASS_RNG, 0, &devp);
		if (!ret) {
			ret = dm_rng_read(devp, &randv, sizeof(randv));
			if (ret < 0)
				randv = 0;
		}
	}
	if (randv)
		srand(randv);
	else
		srand(get_ticks() + rand());

	/* Set all fields randomly */
	for (i = 0; i < 4; i++)
		ptr[i] = rand();

	clrsetbits_be16(&uuid->time_hi_and_version,
			UUID_VERSION_MASK,
			UUID_VERSION << UUID_VERSION_SHIFT);

	clrsetbits_8(&uuid->clock_seq_hi_and_reserved,
		     UUID_VARIANT_MASK,
		     UUID_VARIANT << UUID_VARIANT_SHIFT);

	memcpy(uuid_bin, uuid, 16);
}

/*
 * gen_rand_uuid_str() - this function generates UUID v4 (random) in two string
 *                       formats UUID or GUID.
 *
 * @param uuid_str - pointer to allocated array [37B].
 * @param          - uuid output type: UUID - 0, GUID - 1
 */
void gen_rand_uuid_str(char *uuid_str, int str_format)
{
	unsigned char uuid_bin[UUID_BIN_LEN];

	/* Generate UUID (big endian) */
	gen_rand_uuid(uuid_bin);

	/* Convert UUID bin to UUID or GUID formated STRING  */
	uuid_bin_to_str(uuid_bin, uuid_str, str_format);
}

#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_CMD_UUID)
int do_uuid(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
	char uuid[UUID_STR_LEN + 1];
	int str_format;

	if (!strcmp(argv[0], "uuid"))
		str_format = UUID_STR_FORMAT_STD;
	else
		str_format = UUID_STR_FORMAT_GUID;

	if (argc > 2)
		return CMD_RET_USAGE;

	gen_rand_uuid_str(uuid, str_format);

	if (argc == 1)
		printf("%s\n", uuid);
	else
		env_set(argv[1], uuid);

	return CMD_RET_SUCCESS;
}

U_BOOT_CMD(uuid, CONFIG_SYS_MAXARGS, 1, do_uuid,
	   "UUID - generate random Universally Unique Identifier",
	   "[<varname>]\n"
	   "Argument:\n"
	   "varname: for set result in a environment variable\n"
	   "e.g. uuid uuid_env"
);

U_BOOT_CMD(guid, CONFIG_SYS_MAXARGS, 1, do_uuid,
	   "GUID - generate Globally Unique Identifier based on random UUID",
	   "[<varname>]\n"
	   "Argument:\n"
	   "varname: for set result in a environment variable\n"
	   "e.g. guid guid_env"
);
#endif /* CONFIG_CMD_UUID */
#endif /* CONFIG_RANDOM_UUID || CONFIG_CMD_UUID */
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
e11938ea JH	2	/*
e11938ea JH	3	* Copyright 2011 Calxeda, Inc.
e11938ea JH	4	*/
e11938ea JH	5
89c8230d	6	#include <common.h>
09140113	7	#include <command.h>
3adae642	8	#include <efi_api.h>
9fb625ce	9	#include <env.h>
90526e9f	10	#include <rand.h>
1045315d	11	#include <time.h>
ba06b3c5	12	#include <uuid.h>
e11938ea	13	#include <linux/ctype.h>
a96a0e61 PM	14	#include <errno.h>
a96a0e61 PM	15	#include <common.h>
d718ded0 PM	16	#include <asm/io.h>
	17	#include <part_efi.h>
	18	#include <malloc.h>
92fdad28 MB	19	#include <dm/uclass.h>
92fdad28 MB	20	#include <rng.h>
e11938ea JH	21
e11938ea JH	22	/*
a96a0e61 PM	23	* UUID - Universally Unique IDentifier - 128 bits unique number.
a96a0e61 PM	24	* There are 5 versions and one variant of UUID defined by RFC4122
4e4815fe PM	25	* 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
a96a0e61 PM	41	*
	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.
e11938ea	55	*
a96a0e61 PM	56	* UUID is also used as GUID (Globally Unique Identifier) with the same binary
a96a0e61 PM	57	* format but it differs in string format like below.
e11938ea	58	*
a96a0e61	59	* GUID:
e11938ea JH	60	* 0 9 14 19 24
	61	* xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
	62	* le le le be be
a96a0e61 PM	63	*
a96a0e61 PM	64	* GUID is used e.g. in GPT (GUID Partition Table) as a partiions unique id.
e11938ea	65	*/
e11938ea JH	66	int 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
d718ded0	84	if (i != UUID_STR_LEN \|\| !valid)
e11938ea JH	85	return 0;
	86
	87	return 1;
	88	}
	89
bcb41dca PD	90	static const struct {
	91	const char *string;
	92	efi_guid_t guid;
	93	} list_guid[] = {
c1528f32	94	#ifdef CONFIG_PARTITION_TYPE_GUID
bcb41dca PD	95	{"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},
c0364ce1 RV	102	{"lvm", PARTITION_LINUX_LVM_GUID},
c0364ce1 RV	103	{"u-boot-env", PARTITION_U_BOOT_ENVIRONMENT},
c1528f32	104	#endif
3adae642 HS	105	#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	},
38040a63 HS	186	{
	187	"TCG2",
	188	EFI_TCG2_PROTOCOL_GUID,
	189	},
3adae642 HS	190	{
	191	"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	},
8d4c4265 HS	223	#ifdef CONFIG_EFI_RISCV_BOOT_PROTOCOL
	224	{
	225	"RISC-V Boot",
	226	RISCV_EFI_BOOT_PROTOCOL_GUID,
	227	},
3adae642	228	#endif
8d4c4265	229	#endif /* CONFIG_CMD_EFIDEBUG */
983a5a2e HS	230	#ifdef CONFIG_CMD_NVEDIT_EFI
	231	/* signature database */
	232	{
	233	"EFI_GLOBAL_VARIABLE_GUID",
	234	EFI_GLOBAL_VARIABLE_GUID,
	235	},
	236	{
	237	"EFI_IMAGE_SECURITY_DATABASE_GUID",
	238	EFI_IMAGE_SECURITY_DATABASE_GUID,
	239	},
	240	/* certificate types */
	241	{
	242	"EFI_CERT_SHA256_GUID",
	243	EFI_CERT_SHA256_GUID,
	244	},
	245	{
	246	"EFI_CERT_X509_GUID",
	247	EFI_CERT_X509_GUID,
	248	},
	249	{
	250	"EFI_CERT_TYPE_PKCS7_GUID",
	251	EFI_CERT_TYPE_PKCS7_GUID,
	252	},
	253	#endif
bcb41dca PD	254	};
	255
	256	/*
	257	* uuid_guid_get_bin() - this function get GUID bin for string
	258	*
	259	* @param guid_str - pointer to partition type string
	260	* @param guid_bin - pointer to allocated array for big endian output [16B]
	261	*/
	262	int uuid_guid_get_bin(const char guid_str, unsigned char guid_bin)
	263	{
	264	int i;
	265
	266	for (i = 0; i < ARRAY_SIZE(list_guid); i++) {
	267	if (!strcmp(list_guid[i].string, guid_str)) {
	268	memcpy(guid_bin, &list_guid[i].guid, 16);
	269	return 0;
	270	}
	271	}
	272	return -ENODEV;
	273	}
	274
	275	/*
	276	* uuid_guid_get_str() - this function get string for GUID.
	277	*
	278	* @param guid_bin - pointer to string with partition type guid [16B]
31ce367c RV	279	*
31ce367c RV	280	* Returns NULL if the type GUID is not known.
bcb41dca	281	*/
31ce367c	282	const char uuid_guid_get_str(const unsigned char guid_bin)
bcb41dca PD	283	{
	284	int i;
	285
bcb41dca PD	286	for (i = 0; i < ARRAY_SIZE(list_guid); i++) {
bcb41dca PD	287	if (!memcmp(list_guid[i].guid.b, guid_bin, 16)) {
31ce367c	288	return list_guid[i].string;
bcb41dca PD	289	}
bcb41dca PD	290	}
31ce367c	291	return NULL;
bcb41dca	292	}
bcb41dca	293
d718ded0 PM	294	/*
	295	* uuid_str_to_bin() - convert string UUID or GUID to big endian binary data.
	296	*
bcb41dca	297	* @param uuid_str - pointer to UUID or GUID string [37B] or GUID shorcut
d718ded0 PM	298	* @param uuid_bin - pointer to allocated array for big endian output [16B]
	299	* @str_format - UUID string format: 0 - UUID; 1 - GUID
	300	*/
2c2ca207 SG	301	int uuid_str_to_bin(const char uuid_str, unsigned char uuid_bin,
2c2ca207 SG	302	int str_format)
e11938ea JH	303	{
	304	uint16_t tmp16;
	305	uint32_t tmp32;
	306	uint64_t tmp64;
	307
bcb41dca PD	308	if (!uuid_str_valid(uuid_str)) {
	309	#ifdef CONFIG_PARTITION_TYPE_GUID
	310	if (!uuid_guid_get_bin(uuid_str, uuid_bin))
	311	return 0;
	312	#endif
a96a0e61	313	return -EINVAL;
bcb41dca	314	}
a96a0e61	315
d718ded0	316	if (str_format == UUID_STR_FORMAT_STD) {
7e5f460e	317	tmp32 = cpu_to_be32(hextoul(uuid_str, NULL));
d718ded0	318	memcpy(uuid_bin, &tmp32, 4);
e11938ea	319
7e5f460e	320	tmp16 = cpu_to_be16(hextoul(uuid_str + 9, NULL));
d718ded0	321	memcpy(uuid_bin + 4, &tmp16, 2);
e11938ea	322
7e5f460e	323	tmp16 = cpu_to_be16(hextoul(uuid_str + 14, NULL));
d718ded0 PM	324	memcpy(uuid_bin + 6, &tmp16, 2);
d718ded0 PM	325	} else {
7e5f460e	326	tmp32 = cpu_to_le32(hextoul(uuid_str, NULL));
d718ded0	327	memcpy(uuid_bin, &tmp32, 4);
e11938ea	328
7e5f460e	329	tmp16 = cpu_to_le16(hextoul(uuid_str + 9, NULL));
d718ded0	330	memcpy(uuid_bin + 4, &tmp16, 2);
e11938ea	331
7e5f460e	332	tmp16 = cpu_to_le16(hextoul(uuid_str + 14, NULL));
d718ded0 PM	333	memcpy(uuid_bin + 6, &tmp16, 2);
	334	}
	335
7e5f460e	336	tmp16 = cpu_to_be16(hextoul(uuid_str + 19, NULL));
d718ded0	337	memcpy(uuid_bin + 8, &tmp16, 2);
e11938ea	338
d718ded0 PM	339	tmp64 = cpu_to_be64(simple_strtoull(uuid_str + 24, NULL, 16));
d718ded0 PM	340	memcpy(uuid_bin + 10, (char *)&tmp64 + 2, 6);
a96a0e61 PM	341
	342	return 0;
	343	}
	344
d718ded0 PM	345	/*
	346	* uuid_bin_to_str() - convert big endian binary data to string UUID or GUID.
	347	*
3bad256f HS	348	* @param uuid_bin: pointer to binary data of UUID (big endian) [16B]
	349	* @param uuid_str: pointer to allocated array for output string [37B]
	350	* @str_format: bit 0: 0 - UUID; 1 - GUID
	351	* bit 1: 0 - lower case; 2 - upper case
d718ded0	352	*/
2c2ca207 SG	353	void uuid_bin_to_str(const unsigned char uuid_bin, char uuid_str,
2c2ca207 SG	354	int str_format)
a96a0e61	355	{
d718ded0 PM	356	const u8 uuid_char_order[UUID_BIN_LEN] = {0, 1, 2, 3, 4, 5, 6, 7, 8,
	357	9, 10, 11, 12, 13, 14, 15};
	358	const u8 guid_char_order[UUID_BIN_LEN] = {3, 2, 1, 0, 5, 4, 7, 6, 8,
	359	9, 10, 11, 12, 13, 14, 15};
	360	const u8 *char_order;
3bad256f	361	const char *format;
a96a0e61 PM	362	int i;
a96a0e61 PM	363
d718ded0 PM	364	/*
	365	* UUID and GUID bin data - always in big endian:
	366	* 4B-2B-2B-2B-6B
	367	* be be be be be
	368	*/
3bad256f HS	369	if (str_format & UUID_STR_FORMAT_GUID)
	370	char_order = guid_char_order;
	371	else
d718ded0	372	char_order = uuid_char_order;
3bad256f HS	373	if (str_format & UUID_STR_UPPER_CASE)
3bad256f HS	374	format = "%02X";
d718ded0	375	else
3bad256f	376	format = "%02x";
d718ded0	377
a96a0e61	378	for (i = 0; i < 16; i++) {
3bad256f	379	sprintf(uuid_str, format, uuid_bin[char_order[i]]);
d718ded0	380	uuid_str += 2;
a96a0e61 PM	381	switch (i) {
	382	case 3:
	383	case 5:
	384	case 7:
	385	case 9:
d718ded0	386	*uuid_str++ = '-';
a96a0e61 PM	387	break;
	388	}
	389	}
e11938ea	390	}
4e4815fe PM	391
	392	/*
	393	* gen_rand_uuid() - this function generates a random binary UUID version 4.
	394	* In this version all fields beside 4 bits of version and
	395	* 2 bits of variant are randomly generated.
	396	*
	397	* @param uuid_bin - pointer to allocated array [16B]. Output is in big endian.
	398	*/
89c8230d	399	#if defined(CONFIG_RANDOM_UUID) \|\| defined(CONFIG_CMD_UUID)
4e4815fe PM	400	void gen_rand_uuid(unsigned char *uuid_bin)
4e4815fe PM	401	{
a1b633df HS	402	u32 ptr[4];
a1b633df HS	403	struct uuid uuid = (struct uuid )ptr;
92fdad28 MB	404	int i, ret;
	405	struct udevice *devp;
	406	u32 randv = 0;
	407
	408	if (IS_ENABLED(CONFIG_DM_RNG)) {
	409	ret = uclass_get_device(UCLASS_RNG, 0, &devp);
70a9f4d2	410	if (!ret) {
92fdad28 MB	411	ret = dm_rng_read(devp, &randv, sizeof(randv));
	412	if (ret < 0)
	413	randv = 0;
	414	}
	415	}
	416	if (randv)
	417	srand(randv);
	418	else
	419	srand(get_ticks() + rand());
4ccf678f	420
4e4815fe	421	/* Set all fields randomly */
a1b633df HS	422	for (i = 0; i < 4; i++)
a1b633df HS	423	ptr[i] = rand();
4e4815fe	424
a1b633df	425	clrsetbits_be16(&uuid->time_hi_and_version,
4e4815fe PM	426	UUID_VERSION_MASK,
	427	UUID_VERSION << UUID_VERSION_SHIFT);
	428
a1b633df	429	clrsetbits_8(&uuid->clock_seq_hi_and_reserved,
4e4815fe PM	430	UUID_VARIANT_MASK,
	431	UUID_VARIANT << UUID_VARIANT_SHIFT);
	432
a1b633df	433	memcpy(uuid_bin, uuid, 16);
4e4815fe PM	434	}
	435
	436	/*
	437	* gen_rand_uuid_str() - this function generates UUID v4 (random) in two string
	438	* formats UUID or GUID.
	439	*
	440	* @param uuid_str - pointer to allocated array [37B].
	441	* @param - uuid output type: UUID - 0, GUID - 1
	442	*/
	443	void gen_rand_uuid_str(char *uuid_str, int str_format)
	444	{
	445	unsigned char uuid_bin[UUID_BIN_LEN];
	446
	447	/* Generate UUID (big endian) */
	448	gen_rand_uuid(uuid_bin);
	449
	450	/* Convert UUID bin to UUID or GUID formated STRING */
	451	uuid_bin_to_str(uuid_bin, uuid_str, str_format);
	452	}
89c8230d	453
05f6da3f	454	#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_CMD_UUID)
09140113	455	int do_uuid(struct cmd_tbl cmdtp, int flag, int argc, char const argv[])
89c8230d PM	456	{
	457	char uuid[UUID_STR_LEN + 1];
	458	int str_format;
	459
	460	if (!strcmp(argv[0], "uuid"))
	461	str_format = UUID_STR_FORMAT_STD;
	462	else
	463	str_format = UUID_STR_FORMAT_GUID;
	464
	465	if (argc > 2)
	466	return CMD_RET_USAGE;
	467
	468	gen_rand_uuid_str(uuid, str_format);
	469
	470	if (argc == 1)
	471	printf("%s\n", uuid);
	472	else
382bee57	473	env_set(argv[1], uuid);
89c8230d PM	474
	475	return CMD_RET_SUCCESS;
	476	}
	477
	478	U_BOOT_CMD(uuid, CONFIG_SYS_MAXARGS, 1, do_uuid,
	479	"UUID - generate random Universally Unique Identifier",
	480	"[<varname>]\n"
	481	"Argument:\n"
	482	"varname: for set result in a environment variable\n"
	483	"e.g. uuid uuid_env"
	484	);
	485
	486	U_BOOT_CMD(guid, CONFIG_SYS_MAXARGS, 1, do_uuid,
	487	"GUID - generate Globally Unique Identifier based on random UUID",
	488	"[<varname>]\n"
	489	"Argument:\n"
	490	"varname: for set result in a environment variable\n"
	491	"e.g. guid guid_env"
	492	);
39206382 PM	493	#endif /* CONFIG_CMD_UUID */
39206382 PM	494	#endif /* CONFIG_RANDOM_UUID \|\| CONFIG_CMD_UUID */