Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-24 21:54:01 +00:00
Code Issues Projects Releases Packages Wiki Activity

cmd: part: Add partition-related type command

Browse source 
This implements the following command:

    part type mmc 0:1
      -> print partition type UUID
    part type mmc 0:1 uuid
      -> set environment variable to partition type UUID

"part type" can be useful when writing a bootcmd which searches for a
specific partition type to enable automatic discovery of partitions and
their intended usage or mount point.

Signed-off-by: Enric Balletbo i Serra <eballetbo@redhat.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
[trini: Fix when CONFIG_PARTITION_TYPE_GUID is disabled and have the
command check for "types" before "type"]
Signed-off-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Enric Balletbo i Serra 2023-01-10 17:19:34 +01:00 committed by Tom Rini
parent a685e9c99f
commit 22e7f1d108
2 changed files with 53 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

35
cmd/part.c
View file

@ -182,6 +182,31 @@ static int do_part_number(int argc, char *const argv[])
return do_part_info(argc, argv, CMD_PART_INFO_NUMBER);
}
#ifdef CONFIG_PARTITION_TYPE_GUID
static int do_part_type(int argc, char *const argv[])
{
int part;
struct blk_desc *dev_desc;
struct disk_partition info;
if (argc < 2)
return CMD_RET_USAGE;
if (argc > 3)
return CMD_RET_USAGE;
part = blk_get_device_part_str(argv[0], argv[1], &dev_desc, &info, 0);
if (part < 0)
return 1;
if (argc > 2)
env_set(argv[2], info.type_guid);
else
printf("%s\n", info.type_guid);
return 0;
}
#endif
static int do_part_types(int argc, char * const argv[])
{
struct part_driver *drv = ll_entry_start(struct part_driver,
@ -220,6 +245,10 @@ static int do_part(struct cmd_tbl *cmdtp, int flag, int argc,
return do_part_number(argc - 2, argv + 2);
else if (!strcmp(argv[1], "types"))
return do_part_types(argc - 2, argv + 2);
#ifdef CONFIG_PARTITION_TYPE_GUID
else if (!strcmp(argv[1], "type"))
return do_part_type(argc - 2, argv + 2);
#endif
return CMD_RET_USAGE;
}
@ -244,6 +273,12 @@ U_BOOT_CMD(
"part number <interface> <dev> <part> <varname>\n"
" - set environment variable to the partition number using the partition name\n"
" part must be specified as partition name\n"
#ifdef CONFIG_PARTITION_TYPE_GUID
"part type <interface> <dev>:<part>\n"
" - print partition type\n"
#endif
"part type <interface> <dev>:<part> <varname>\n"
" - set environment variable to partition type\n"
"part types\n"
" - list supported partition table types"
);

18
doc/usage/cmd/part.rst
View file

@ -13,6 +13,7 @@ Synopis
part start <interface> <dev> <part> <varname>
part size <interface> <dev> <part> <varname>
part number <interface> <dev> <part> <varname>
part type <interface> <dev>:<part> [varname]
part types
Description
@ -81,6 +82,17 @@ part must be specified as partition name.
varname
a variable to store the current partition number value into
The 'part type' command prints or sets an environment variable to the partition type UUID.
interface
interface for accessing the block device (mmc, sata, scsi, usb, ....)
dev
device number
part
partition number
varname
a variable to store the current partition type UUID value into
The 'part types' command list supported partition table types.
Examples
@ -126,6 +138,12 @@ Examples
=> env print varname
varname=0x2
=>
=> part type host 0:1
ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
=> part type host 0:1 varname
=> env print varname
varname=ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
=>
=> part types
Supported partition tables: EFI, AMIGA, DOS, ISO, MAC