mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 02:51:00 +00:00
0914011310
We should not use typedefs in U-Boot. They cannot be used as forward declarations which means that header files must include the full header to access them. Drop the typedef and rename the struct to remove the _s suffix which is now not useful. This requires quite a few header-file additions. Signed-off-by: Simon Glass <sjg@chromium.org>
329 lines
8.5 KiB
C
329 lines
8.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2011 Calxeda, Inc.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.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>
|
|
|
|
/*
|
|
* 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;
|
|
}
|
|
|
|
#ifdef CONFIG_PARTITION_TYPE_GUID
|
|
static const struct {
|
|
const char *string;
|
|
efi_guid_t guid;
|
|
} list_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}
|
|
};
|
|
|
|
/*
|
|
* 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]
|
|
* @param guid_str - pointer to allocated partition type string [7B]
|
|
*/
|
|
int uuid_guid_get_str(const unsigned char *guid_bin, char *guid_str)
|
|
{
|
|
int i;
|
|
|
|
*guid_str = 0;
|
|
for (i = 0; i < ARRAY_SIZE(list_guid); i++) {
|
|
if (!memcmp(list_guid[i].guid.b, guid_bin, 16)) {
|
|
strcpy(guid_str, list_guid[i].string);
|
|
return 0;
|
|
}
|
|
}
|
|
return -ENODEV;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* 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(simple_strtoul(uuid_str, NULL, 16));
|
|
memcpy(uuid_bin, &tmp32, 4);
|
|
|
|
tmp16 = cpu_to_be16(simple_strtoul(uuid_str + 9, NULL, 16));
|
|
memcpy(uuid_bin + 4, &tmp16, 2);
|
|
|
|
tmp16 = cpu_to_be16(simple_strtoul(uuid_str + 14, NULL, 16));
|
|
memcpy(uuid_bin + 6, &tmp16, 2);
|
|
} else {
|
|
tmp32 = cpu_to_le32(simple_strtoul(uuid_str, NULL, 16));
|
|
memcpy(uuid_bin, &tmp32, 4);
|
|
|
|
tmp16 = cpu_to_le16(simple_strtoul(uuid_str + 9, NULL, 16));
|
|
memcpy(uuid_bin + 4, &tmp16, 2);
|
|
|
|
tmp16 = cpu_to_le16(simple_strtoul(uuid_str + 14, NULL, 16));
|
|
memcpy(uuid_bin + 6, &tmp16, 2);
|
|
}
|
|
|
|
tmp16 = cpu_to_be16(simple_strtoul(uuid_str + 19, NULL, 16));
|
|
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;
|
|
|
|
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 */
|