diff options
| author | Nico Huber <nico.huber@secunet.com> | 2019-10-24 15:01:33 +0200 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-11-01 11:38:22 +0000 |
| commit | 2e6a0f805298f943cdfa77be5bbeadc2bbf0006f (patch) | |
| tree | e3e9a9e98f8fb94a883f17e0c0f596250170c879 /src/lib | |
| parent | f71bb5d1746c8cabc2fbd79420c3bcfc439ad41b (diff) | |
lib/uuid: Add UUID parsing function
Implement a simple function that parses a canonical UUID string into the
common byte representation. Inspired by acpigen_write_uuid().
Change-Id: Ia1bd883c740873699814fde6c6ddc1937a40093e
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36297
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Diffstat (limited to 'src/lib')
| -rw-r--r-- | src/lib/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/lib/uuid.c | 35 |
2 files changed, 37 insertions, 0 deletions
diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc index e5678ffdf1..da7b4bbdbc 100644 --- a/src/lib/Makefile.inc +++ b/src/lib/Makefile.inc @@ -346,3 +346,5 @@ cbfs-files-$(CONFIG_GENERIC_SPD_BIN) += spd.bin spd.bin-file := $(LIB_SPD_BIN) spd.bin-type := spd endif + +ramstage-y += uuid.c diff --git a/src/lib/uuid.c b/src/lib/uuid.c new file mode 100644 index 0000000000..b5c00d7efb --- /dev/null +++ b/src/lib/uuid.c @@ -0,0 +1,35 @@ +/* + * This file is part of the coreboot project. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <stdint.h> +#include <lib.h> +#include <uuid.h> + +int parse_uuid(uint8_t *const uuid, const char *const uuid_str) +{ + const uint8_t order[] = { 3, 2, 1, 0, 5, 4, 7, 6, 8, 9, 10, 11, 12, 13, 14, 15 }; + uint8_t uuid_binstr[UUID_LEN]; + unsigned int i; + + if (strlen(uuid_str) != UUID_STRLEN) + return -1; + if (uuid_str[8] != '-' || uuid_str[13] != '-' || + uuid_str[18] != '-' || uuid_str[23] != '-') + return -1; + if (hexstrtobin(uuid_str, uuid_binstr, UUID_LEN) != UUID_LEN) + return -1; + for (i = 0; i < UUID_LEN; ++i) + uuid[i] = uuid_binstr[order[i]]; + + return 0; +} |