lib: uuid: add functions to generate UUID version 4
This patch adds support to generate UUID (Universally Unique Identifier)
in version 4 based on RFC4122, which is randomly.
Source: https://www.ietf.org/rfc/rfc4122.txt
Changes:
- new configs:
- CONFIG_LIB_UUID for compile lib/uuid.c
- CONFIG_RANDOM_UUID for functions gen_rand_uuid() and gen_rand_uuid_str()
- add configs dependency to include/config_fallbacks.h for lib uuid.
lib/uuid.c:
- add gen_rand_uuid() - this function writes 16 bytes len binary representation
of UUID v4 to the memory at given address.
- add gen_rand_uuid_str() - this function writes 37 bytes len hexadecimal
ASCII string representation of UUID v4 to the memory at given address.
Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Lukasz Majewski <l.majewski@samsung.com>
[trini: Add CONFIG_EFI_PARTITION to fallbacks]
Signed-off-by: Tom Rini <trini@ti.com>
diff --git a/lib/Makefile b/lib/Makefile
index d7ff7ca..27e4f78 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -60,8 +60,7 @@
obj-y += string.o
obj-y += time.o
obj-$(CONFIG_TRACE) += trace.o
-obj-$(CONFIG_BOOTP_PXE) += uuid.o
-obj-$(CONFIG_PARTITION_UUIDS) += uuid.o
+obj-$(CONFIG_LIB_UUID) += uuid.o
obj-y += vsprintf.o
obj-$(CONFIG_LIB_RAND) += rand.o