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

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright 2011 Calxeda, Inc.
 * Copyright 2022-2023 Arm Limited and/or its affiliates <[email protected]>
 *
 * Authors:
 *   Abdellatif El Khlifi <[email protected]>
 */

#define LOG_CATEGOT LOGC_CORE

#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 <asm/io.h>
#include <part_efi.h>
#include <malloc.h>
#include <dm/uclass.h>
#include <rng.h>

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},
	{"cros-kern",	PARTITION_CROS_KERNEL},
	{"cros-root",	PARTITION_CROS_ROOT},
	{"cros-fw",	PARTITION_CROS_FIRMWARE},
	{"cros-rsrv",	PARTITION_CROS_RESERVED},
#endif
#if defined(CONFIG_CMD_EFIDEBUG) || defined(CONFIG_EFI)
	{
		"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,
	},
	{
		"SMBIOS3 table",
		SMBIOS3_TABLE_GUID,
	},
	{
		"Runtime properties",
		EFI_RT_PROPERTIES_TABLE_GUID,
	},
	{
		"TCG2 Final Events Table",
		EFI_TCG2_FINAL_EVENTS_TABLE_GUID,
	},
	{
		"EFI Conformance Profiles Table",
		EFI_CONFORMANCE_PROFILES_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
#if defined(CONFIG_CMD_EFIDEBUG) || defined(CONFIG_EFI)
	{ "EFI_LZMA_COMPRESSED", EFI_LZMA_COMPRESSED },
	{ "EFI_DXE_SERVICES", EFI_DXE_SERVICES },
	{ "EFI_HOB_LIST", EFI_HOB_LIST },
	{ "EFI_MEMORY_TYPE", EFI_MEMORY_TYPE },
	{ "EFI_MEM_STATUS_CODE_REC", EFI_MEM_STATUS_CODE_REC },
	{ "EFI_GUID_EFI_ACPI1", EFI_GUID_EFI_ACPI1 },
#endif
};

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;
}

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;
}

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)) {
		log_debug("not valid\n");
#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;
}

int uuid_str_to_le_bin(const char *uuid_str, unsigned char *uuid_bin)
{
	u16 tmp16;
	u32 tmp32;
	u64 tmp64;

	if (!uuid_str_valid(uuid_str) || !uuid_bin)
		return -EINVAL;

	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_le16(hextoul(uuid_str + 19, NULL));
	memcpy(uuid_bin + 8, &tmp16, 2);

	tmp64 = cpu_to_le64(simple_strtoull(uuid_str + 24, NULL, 16));
	memcpy(uuid_bin + 10, &tmp64, 6);

	return 0;
}

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;
		}
	}
}

#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);
}

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.
7048f26c AEK	4	* Copyright 2022-2023 Arm Limited and/or its affiliates <[email protected]>
	5	*
	6	* Authors:
	7	* Abdellatif El Khlifi <[email protected]>
e11938ea JH	8	*/
e11938ea JH	9
966b16c5 SG	10	#define LOG_CATEGOT LOGC_CORE
966b16c5 SG	11
09140113	12	#include <command.h>
3adae642	13	#include <efi_api.h>
9fb625ce	14	#include <env.h>
90526e9f	15	#include <rand.h>
1045315d	16	#include <time.h>
ba06b3c5	17	#include <uuid.h>
e11938ea	18	#include <linux/ctype.h>
a96a0e61	19	#include <errno.h>
d718ded0 PM	20	#include <asm/io.h>
	21	#include <part_efi.h>
	22	#include <malloc.h>
92fdad28 MB	23	#include <dm/uclass.h>
92fdad28 MB	24	#include <rng.h>
e11938ea	25
e11938ea JH	26	int uuid_str_valid(const char *uuid)
	27	{
	28	int i, valid;
	29
	30	if (uuid == NULL)
	31	return 0;
	32
	33	for (i = 0, valid = 1; uuid[i] && valid; i++) {
	34	switch (i) {
	35	case 8: case 13: case 18: case 23:
	36	valid = (uuid[i] == '-');
	37	break;
	38	default:
	39	valid = isxdigit(uuid[i]);
	40	break;
	41	}
	42	}
	43
d718ded0	44	if (i != UUID_STR_LEN \|\| !valid)
e11938ea JH	45	return 0;
	46
	47	return 1;
	48	}
	49
bcb41dca PD	50	static const struct {
	51	const char *string;
	52	efi_guid_t guid;
	53	} list_guid[] = {
c1528f32	54	#ifdef CONFIG_PARTITION_TYPE_GUID
bcb41dca PD	55	{"system", PARTITION_SYSTEM_GUID},
	56	{"mbr", LEGACY_MBR_PARTITION_GUID},
	57	{"msft", PARTITION_MSFT_RESERVED_GUID},
	58	{"data", PARTITION_BASIC_DATA_GUID},
	59	{"linux", PARTITION_LINUX_FILE_SYSTEM_DATA_GUID},
	60	{"raid", PARTITION_LINUX_RAID_GUID},
	61	{"swap", PARTITION_LINUX_SWAP_GUID},
c0364ce1 RV	62	{"lvm", PARTITION_LINUX_LVM_GUID},
c0364ce1 RV	63	{"u-boot-env", PARTITION_U_BOOT_ENVIRONMENT},
966b16c5 SG	64	{"cros-kern", PARTITION_CROS_KERNEL},
	65	{"cros-root", PARTITION_CROS_ROOT},
	66	{"cros-fw", PARTITION_CROS_FIRMWARE},
	67	{"cros-rsrv", PARTITION_CROS_RESERVED},
c1528f32	68	#endif
4e5e49a3	69	#if defined(CONFIG_CMD_EFIDEBUG) \|\| defined(CONFIG_EFI)
3adae642 HS	70	{
	71	"Device Path",
	72	EFI_DEVICE_PATH_PROTOCOL_GUID,
	73	},
	74	{
	75	"Device Path To Text",
	76	EFI_DEVICE_PATH_TO_TEXT_PROTOCOL_GUID,
	77	},
	78	{
	79	"Device Path Utilities",
	80	EFI_DEVICE_PATH_UTILITIES_PROTOCOL_GUID,
	81	},
	82	{
	83	"Unicode Collation 2",
	84	EFI_UNICODE_COLLATION_PROTOCOL2_GUID,
	85	},
	86	{
	87	"Driver Binding",
	88	EFI_DRIVER_BINDING_PROTOCOL_GUID,
	89	},
	90	{
	91	"Simple Text Input",
	92	EFI_SIMPLE_TEXT_INPUT_PROTOCOL_GUID,
	93	},
	94	{
	95	"Simple Text Input Ex",
	96	EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL_GUID,
	97	},
	98	{
	99	"Simple Text Output",
	100	EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL_GUID,
	101	},
	102	{
	103	"Block IO",
	104	EFI_BLOCK_IO_PROTOCOL_GUID,
	105	},
	106	{
	107	"Simple File System",
	108	EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID,
	109	},
	110	{
	111	"Loaded Image",
	112	EFI_LOADED_IMAGE_PROTOCOL_GUID,
	113	},
	114	{
	115	"Graphics Output",
	116	EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID,
	117	},
	118	{
	119	"HII String",
	120	EFI_HII_STRING_PROTOCOL_GUID,
	121	},
	122	{
	123	"HII Database",
	124	EFI_HII_DATABASE_PROTOCOL_GUID,
	125	},
	126	{
	127	"HII Config Routing",
	128	EFI_HII_CONFIG_ROUTING_PROTOCOL_GUID,
	129	},
	130	{
	131	"Load File2",
	132	EFI_LOAD_FILE2_PROTOCOL_GUID,
	133	},
134	{
135	"Random Number Generator",
136	EFI_RNG_PROTOCOL_GUID,
137	},
138	{
139	"Simple Network",
140	EFI_SIMPLE_NETWORK_PROTOCOL_GUID,
141	},
142	{
143	"PXE Base Code",
144	EFI_PXE_BASE_CODE_PROTOCOL_GUID,
145	},
146	{
147	"Device-Tree Fixup",
148	EFI_DT_FIXUP_PROTOCOL_GUID,
149	},
38040a63 HS	150	{
	151	"TCG2",
	152	EFI_TCG2_PROTOCOL_GUID,
	153	},
3adae642 HS	154	{
	155	"System Partition",
	156	PARTITION_SYSTEM_GUID
	157	},
	158	{
	159	"Firmware Management",
	160	EFI_FIRMWARE_MANAGEMENT_PROTOCOL_GUID
	161	},
	162	/* Configuration table GUIDs */
	163	{
	164	"ACPI table",
	165	EFI_ACPI_TABLE_GUID,
	166	},
	167	{
	168	"EFI System Resource Table",
	169	EFI_SYSTEM_RESOURCE_TABLE_GUID,
	170	},
	171	{
	172	"device tree",
	173	EFI_FDT_GUID,
	174	},
	175	{
	176	"SMBIOS table",
	177	SMBIOS_TABLE_GUID,
	178	},
91cc06bc HS	179	{
	180	"SMBIOS3 table",
	181	SMBIOS3_TABLE_GUID,
	182	},
3adae642 HS	183	{
	184	"Runtime properties",
	185	EFI_RT_PROPERTIES_TABLE_GUID,
	186	},
	187	{
	188	"TCG2 Final Events Table",
	189	EFI_TCG2_FINAL_EVENTS_TABLE_GUID,
	190	},
6b92c173 JM	191	{
	192	"EFI Conformance Profiles Table",
	193	EFI_CONFORMANCE_PROFILES_TABLE_GUID,
	194	},
8d4c4265 HS	195	#ifdef CONFIG_EFI_RISCV_BOOT_PROTOCOL
	196	{
	197	"RISC-V Boot",
	198	RISCV_EFI_BOOT_PROTOCOL_GUID,
	199	},
3adae642	200	#endif
8d4c4265	201	#endif /* CONFIG_CMD_EFIDEBUG */
983a5a2e HS	202	#ifdef CONFIG_CMD_NVEDIT_EFI
	203	/* signature database */
	204	{
	205	"EFI_GLOBAL_VARIABLE_GUID",
	206	EFI_GLOBAL_VARIABLE_GUID,
	207	},
	208	{
	209	"EFI_IMAGE_SECURITY_DATABASE_GUID",
	210	EFI_IMAGE_SECURITY_DATABASE_GUID,
	211	},
	212	/* certificate types */
	213	{
	214	"EFI_CERT_SHA256_GUID",
	215	EFI_CERT_SHA256_GUID,
	216	},
	217	{
	218	"EFI_CERT_X509_GUID",
	219	EFI_CERT_X509_GUID,
	220	},
	221	{
	222	"EFI_CERT_TYPE_PKCS7_GUID",
	223	EFI_CERT_TYPE_PKCS7_GUID,
	224	},
	225	#endif
3710802e	226	#if defined(CONFIG_CMD_EFIDEBUG) \|\| defined(CONFIG_EFI)
ac93275d SG	227	{ "EFI_LZMA_COMPRESSED", EFI_LZMA_COMPRESSED },
	228	{ "EFI_DXE_SERVICES", EFI_DXE_SERVICES },
	229	{ "EFI_HOB_LIST", EFI_HOB_LIST },
	230	{ "EFI_MEMORY_TYPE", EFI_MEMORY_TYPE },
	231	{ "EFI_MEM_STATUS_CODE_REC", EFI_MEM_STATUS_CODE_REC },
	232	{ "EFI_GUID_EFI_ACPI1", EFI_GUID_EFI_ACPI1 },
	233	#endif
bcb41dca PD	234	};
bcb41dca PD	235
bcb41dca PD	236	int uuid_guid_get_bin(const char guid_str, unsigned char guid_bin)
	237	{
	238	int i;
	239
	240	for (i = 0; i < ARRAY_SIZE(list_guid); i++) {
	241	if (!strcmp(list_guid[i].string, guid_str)) {
	242	memcpy(guid_bin, &list_guid[i].guid, 16);
	243	return 0;
	244	}
	245	}
	246	return -ENODEV;
	247	}
	248
31ce367c	249	const char uuid_guid_get_str(const unsigned char guid_bin)
bcb41dca PD	250	{
	251	int i;
	252
bcb41dca PD	253	for (i = 0; i < ARRAY_SIZE(list_guid); i++) {
bcb41dca PD	254	if (!memcmp(list_guid[i].guid.b, guid_bin, 16)) {
31ce367c	255	return list_guid[i].string;
bcb41dca PD	256	}
bcb41dca PD	257	}
31ce367c	258	return NULL;
bcb41dca	259	}
bcb41dca	260
2c2ca207 SG	261	int uuid_str_to_bin(const char uuid_str, unsigned char uuid_bin,
2c2ca207 SG	262	int str_format)
e11938ea JH	263	{
	264	uint16_t tmp16;
	265	uint32_t tmp32;
	266	uint64_t tmp64;
	267
bcb41dca	268	if (!uuid_str_valid(uuid_str)) {
966b16c5	269	log_debug("not valid\n");
bcb41dca PD	270	#ifdef CONFIG_PARTITION_TYPE_GUID
	271	if (!uuid_guid_get_bin(uuid_str, uuid_bin))
	272	return 0;
	273	#endif
a96a0e61	274	return -EINVAL;
bcb41dca	275	}
a96a0e61	276
d718ded0	277	if (str_format == UUID_STR_FORMAT_STD) {
7e5f460e	278	tmp32 = cpu_to_be32(hextoul(uuid_str, NULL));
d718ded0	279	memcpy(uuid_bin, &tmp32, 4);
e11938ea	280
7e5f460e	281	tmp16 = cpu_to_be16(hextoul(uuid_str + 9, NULL));
d718ded0	282	memcpy(uuid_bin + 4, &tmp16, 2);
e11938ea	283
7e5f460e	284	tmp16 = cpu_to_be16(hextoul(uuid_str + 14, NULL));
d718ded0 PM	285	memcpy(uuid_bin + 6, &tmp16, 2);
d718ded0 PM	286	} else {
7e5f460e	287	tmp32 = cpu_to_le32(hextoul(uuid_str, NULL));
d718ded0	288	memcpy(uuid_bin, &tmp32, 4);
e11938ea	289
7e5f460e	290	tmp16 = cpu_to_le16(hextoul(uuid_str + 9, NULL));
d718ded0	291	memcpy(uuid_bin + 4, &tmp16, 2);
e11938ea	292
7e5f460e	293	tmp16 = cpu_to_le16(hextoul(uuid_str + 14, NULL));
d718ded0 PM	294	memcpy(uuid_bin + 6, &tmp16, 2);
	295	}
	296
7e5f460e	297	tmp16 = cpu_to_be16(hextoul(uuid_str + 19, NULL));
d718ded0	298	memcpy(uuid_bin + 8, &tmp16, 2);
e11938ea	299
d718ded0 PM	300	tmp64 = cpu_to_be64(simple_strtoull(uuid_str + 24, NULL, 16));
d718ded0 PM	301	memcpy(uuid_bin + 10, (char *)&tmp64 + 2, 6);
a96a0e61 PM	302
	303	return 0;
	304	}
	305
7048f26c AEK	306	int uuid_str_to_le_bin(const char uuid_str, unsigned char uuid_bin)
	307	{
	308	u16 tmp16;
	309	u32 tmp32;
	310	u64 tmp64;
	311
	312	if (!uuid_str_valid(uuid_str) \|\| !uuid_bin)
	313	return -EINVAL;
	314
	315	tmp32 = cpu_to_le32(hextoul(uuid_str, NULL));
	316	memcpy(uuid_bin, &tmp32, 4);
	317
	318	tmp16 = cpu_to_le16(hextoul(uuid_str + 9, NULL));
	319	memcpy(uuid_bin + 4, &tmp16, 2);
	320
	321	tmp16 = cpu_to_le16(hextoul(uuid_str + 14, NULL));
	322	memcpy(uuid_bin + 6, &tmp16, 2);
	323
	324	tmp16 = cpu_to_le16(hextoul(uuid_str + 19, NULL));
	325	memcpy(uuid_bin + 8, &tmp16, 2);
	326
	327	tmp64 = cpu_to_le64(simple_strtoull(uuid_str + 24, NULL, 16));
	328	memcpy(uuid_bin + 10, &tmp64, 6);
	329
	330	return 0;
	331	}
	332
2c2ca207 SG	333	void uuid_bin_to_str(const unsigned char uuid_bin, char uuid_str,
2c2ca207 SG	334	int str_format)
a96a0e61	335	{
d718ded0 PM	336	const u8 uuid_char_order[UUID_BIN_LEN] = {0, 1, 2, 3, 4, 5, 6, 7, 8,
	337	9, 10, 11, 12, 13, 14, 15};
	338	const u8 guid_char_order[UUID_BIN_LEN] = {3, 2, 1, 0, 5, 4, 7, 6, 8,
	339	9, 10, 11, 12, 13, 14, 15};
	340	const u8 *char_order;
3bad256f	341	const char *format;
a96a0e61 PM	342	int i;
a96a0e61 PM	343
d718ded0 PM	344	/*
	345	* UUID and GUID bin data - always in big endian:
	346	* 4B-2B-2B-2B-6B
	347	* be be be be be
	348	*/
3bad256f HS	349	if (str_format & UUID_STR_FORMAT_GUID)
	350	char_order = guid_char_order;
	351	else
d718ded0	352	char_order = uuid_char_order;
3bad256f HS	353	if (str_format & UUID_STR_UPPER_CASE)
3bad256f HS	354	format = "%02X";
d718ded0	355	else
3bad256f	356	format = "%02x";
d718ded0	357
a96a0e61	358	for (i = 0; i < 16; i++) {
3bad256f	359	sprintf(uuid_str, format, uuid_bin[char_order[i]]);
d718ded0	360	uuid_str += 2;
a96a0e61 PM	361	switch (i) {
	362	case 3:
	363	case 5:
	364	case 7:
	365	case 9:
d718ded0	366	*uuid_str++ = '-';
a96a0e61 PM	367	break;
	368	}
	369	}
e11938ea	370	}
4e4815fe	371
89c8230d	372	#if defined(CONFIG_RANDOM_UUID) \|\| defined(CONFIG_CMD_UUID)
4e4815fe PM	373	void gen_rand_uuid(unsigned char *uuid_bin)
4e4815fe PM	374	{
a1b633df HS	375	u32 ptr[4];
a1b633df HS	376	struct uuid uuid = (struct uuid )ptr;
92fdad28 MB	377	int i, ret;
	378	struct udevice *devp;
	379	u32 randv = 0;
	380
	381	if (IS_ENABLED(CONFIG_DM_RNG)) {
	382	ret = uclass_get_device(UCLASS_RNG, 0, &devp);
70a9f4d2	383	if (!ret) {
92fdad28 MB	384	ret = dm_rng_read(devp, &randv, sizeof(randv));
	385	if (ret < 0)
	386	randv = 0;
	387	}
	388	}
	389	if (randv)
	390	srand(randv);
	391	else
	392	srand(get_ticks() + rand());
4ccf678f	393
4e4815fe	394	/* Set all fields randomly */
a1b633df HS	395	for (i = 0; i < 4; i++)
a1b633df HS	396	ptr[i] = rand();
4e4815fe	397
a1b633df	398	clrsetbits_be16(&uuid->time_hi_and_version,
4e4815fe PM	399	UUID_VERSION_MASK,
	400	UUID_VERSION << UUID_VERSION_SHIFT);
	401
a1b633df	402	clrsetbits_8(&uuid->clock_seq_hi_and_reserved,
4e4815fe PM	403	UUID_VARIANT_MASK,
	404	UUID_VARIANT << UUID_VARIANT_SHIFT);
	405
a1b633df	406	memcpy(uuid_bin, uuid, 16);
4e4815fe PM	407	}
4e4815fe PM	408
4e4815fe PM	409	void gen_rand_uuid_str(char *uuid_str, int str_format)
	410	{
	411	unsigned char uuid_bin[UUID_BIN_LEN];
	412
	413	/* Generate UUID (big endian) */
	414	gen_rand_uuid(uuid_bin);
	415
	416	/* Convert UUID bin to UUID or GUID formated STRING */
	417	uuid_bin_to_str(uuid_bin, uuid_str, str_format);
	418	}
89c8230d	419
05f6da3f	420	#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_CMD_UUID)
09140113	421	int do_uuid(struct cmd_tbl cmdtp, int flag, int argc, char const argv[])
89c8230d PM	422	{
	423	char uuid[UUID_STR_LEN + 1];
	424	int str_format;
	425
	426	if (!strcmp(argv[0], "uuid"))
	427	str_format = UUID_STR_FORMAT_STD;
	428	else
	429	str_format = UUID_STR_FORMAT_GUID;
	430
	431	if (argc > 2)
	432	return CMD_RET_USAGE;
	433
	434	gen_rand_uuid_str(uuid, str_format);
	435
	436	if (argc == 1)
	437	printf("%s\n", uuid);
	438	else
382bee57	439	env_set(argv[1], uuid);
89c8230d PM	440
	441	return CMD_RET_SUCCESS;
	442	}
	443
	444	U_BOOT_CMD(uuid, CONFIG_SYS_MAXARGS, 1, do_uuid,
	445	"UUID - generate random Universally Unique Identifier",
	446	"[<varname>]\n"
	447	"Argument:\n"
	448	"varname: for set result in a environment variable\n"
	449	"e.g. uuid uuid_env"
	450	);
	451
	452	U_BOOT_CMD(guid, CONFIG_SYS_MAXARGS, 1, do_uuid,
	453	"GUID - generate Globally Unique Identifier based on random UUID",
	454	"[<varname>]\n"
	455	"Argument:\n"
	456	"varname: for set result in a environment variable\n"
	457	"e.g. guid guid_env"
	458	);
39206382 PM	459	#endif /* CONFIG_CMD_UUID */
39206382 PM	460	#endif /* CONFIG_RANDOM_UUID \|\| CONFIG_CMD_UUID */