short strings can be used in type parameter of gpt command to replace the guid string for the types known by u-boot
partitions = name=boot,size=0x6bc00,type=data; \ name=root,size=0x7538ba00,type=linux; gpt write mmc 0 $partitions
and they are also used to display the type of partition in "part list" command
Partition Map for MMC device 0 -- Partition Type: EFI
Part Start LBA End LBA Name Attributes Type GUID Partition GUID 1 0x00000022 0x0000037f "boot" attrs: 0x0000000000000000 type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7 type: data guid: d117f98e-6f2c-d04b-a5b2-331a19f91cb2 2 0x00000380 0x003a9fdc "root" attrs: 0x0000000000000000 type: 0fc63daf-8483-4772-8e79-3d69d8477de4 type: linux guid: 25718777-d0ad-7443-9e60-02cb591c9737
Signed-off-by: Patrick Delaunay patrick.delaunay73@gmail.com ---
Changes in v3: - documentation update
Changes in v2: - guid change to type in gpt parameter - remove hardcoded array size and use ARRAY_SIZE - use guid in parameter name - array is renamed to list_guid (it could be not limited to partition type)
disk/part_efi.c | 4 ++++ doc/README.gpt | 24 ++++++++++++++++++++++ include/uuid.h | 4 ++++ lib/uuid.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-- 4 files changed, 94 insertions(+), 2 deletions(-)
diff --git a/disk/part_efi.c b/disk/part_efi.c index c124143..ea9c615 100644 --- a/disk/part_efi.c +++ b/disk/part_efi.c @@ -223,6 +223,10 @@ void print_part_efi(block_dev_desc_t * dev_desc) uuid_bin = (unsigned char *)gpt_pte[i].partition_type_guid.b; uuid_bin_to_str(uuid_bin, uuid, UUID_STR_FORMAT_GUID); printf("\ttype:\t%s\n", uuid); +#ifdef CONFIG_PARTITION_TYPE_GUID + if (!uuid_guid_get_str(uuid_bin, uuid)) + printf("\ttype:\t%s\n", uuid); +#endif uuid_bin = (unsigned char *)gpt_pte[i].unique_partition_guid.b; uuid_bin_to_str(uuid_bin, uuid, UUID_STR_FORMAT_GUID); printf("\tguid:\t%s\n", uuid); diff --git a/doc/README.gpt b/doc/README.gpt index bf9b8bd..35902ce 100644 --- a/doc/README.gpt +++ b/doc/README.gpt @@ -184,6 +184,30 @@ can specify a other partition type guid: name=kernel,size=60MiB,uuid=..., type=0FC63DAF-8483-4772-8E79-3D69D8477DE4;"
+Some strings can be also used at the place of known GUID : + "system" = PARTITION_SYSTEM_GUID + (C12A7328-F81F-11D2-BA4B-00A0C93EC93B) + "mbr" = LEGACY_MBR_PARTITION_GUID + (024DEE41-33E7-11D3-9D69-0008C781F39F) + "msft" = PARTITION_MSFT_RESERVED_GUID + (E3C9E316-0B5C-4DB8-817D-F92DF00215AE) + "data" = PARTITION_BASIC_DATA_GUID + (EBD0A0A2-B9E5-4433-87C0-68B6B72699C7) + "linux" = PARTITION_LINUX_FILE_SYSTEM_DATA_GUID + (0FC63DAF-8483-4772-8E79-3D69D8477DE4) + "raid" = PARTITION_LINUX_RAID_GUID + (A19D880F-05FC-4D3B-A006-743F0F84911E) + "swap" = PARTITION_LINUX_SWAP_GUID + (0657FD6D-A4AB-43C4-84E5-0933C84B4F4F) + "lvm" = PARTITION_LINUX_LVM_GUID + (E6D6D379-F507-44C2-A23C-238F2A3DF928) + + "partitions=uuid_disk=...;name=u-boot,size=60MiB,uuid=...; + name=kernel,size=60MiB,uuid=...,type=linux;" + +They are also used to display the type of partition in "part list" command. + + Useful info: ============
diff --git a/include/uuid.h b/include/uuid.h index 93027c1..c3f423f 100644 --- a/include/uuid.h +++ b/include/uuid.h @@ -36,6 +36,10 @@ enum { int uuid_str_valid(const char *uuid); int uuid_str_to_bin(char *uuid_str, unsigned char *uuid_bin, int str_format); void uuid_bin_to_str(unsigned char *uuid_bin, char *uuid_str, int str_format); +#ifdef CONFIG_PARTITION_TYPE_GUID +int uuid_guid_get_bin(const char *guid_str, unsigned char *guid_bin); +int uuid_guid_get_str(unsigned char *guid_bin, char *guid_str); +#endif void gen_rand_uuid(unsigned char *uuid_bin); void gen_rand_uuid_str(char *uuid_str, int str_format); #endif diff --git a/lib/uuid.c b/lib/uuid.c index f6b4423..c8584ed 100644 --- a/lib/uuid.c +++ b/lib/uuid.c @@ -80,10 +80,65 @@ int uuid_str_valid(const char *uuid) 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(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] + * @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 */ @@ -93,8 +148,13 @@ int uuid_str_to_bin(char *uuid_str, unsigned char *uuid_bin, int str_format) uint32_t tmp32; uint64_t tmp64;
- if (!uuid_str_valid(uuid_str)) + 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));