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| author | Tom Rini <trini@konsulko.com> | 2021-01-19 14:46:45 -0500 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2021-01-19 14:46:45 -0500 |
| commit | 9d13cd95f1df7d04f702975cdcdd8e087f71f74c (patch) | |
| tree | ecdb97433ba17bf82c463affdf47ab96100cf64b /lib/uuid.c | |
| parent | db0dd72e27ce62c5b28f07595b91ed00d0565819 (diff) | |
| parent | 1231184caacad32c180d7e2338a645f7dfe9571a (diff) | |
Merge branch '2021-01-19-networking-improvements'
- e1000, ftgmac100: Add support for getting the MAC
- General networking improvements
- dwc_eth_qos, ks8851 fixes
Diffstat (limited to 'lib/uuid.c')
| -rw-r--r-- | lib/uuid.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/lib/uuid.c b/lib/uuid.c index 54a93aacc9..5bc68674d0 100644 --- a/lib/uuid.c +++ b/lib/uuid.c @@ -15,6 +15,8 @@ #include <asm/io.h> #include <part_efi.h> #include <malloc.h> +#include <dm/uclass.h> +#include <rng.h> /* * UUID - Universally Unique IDentifier - 128 bits unique number. @@ -249,9 +251,22 @@ void gen_rand_uuid(unsigned char *uuid_bin) { u32 ptr[4]; struct uuid *uuid = (struct uuid *)ptr; - int i; - - srand(get_ticks() + rand()); + int i, ret; + struct udevice *devp; + u32 randv = 0; + + if (IS_ENABLED(CONFIG_DM_RNG)) { + ret = uclass_get_device(UCLASS_RNG, 0, &devp); + if (ret) { + ret = dm_rng_read(devp, &randv, sizeof(randv)); + if (ret < 0) + randv = 0; + } + } + if (randv) + srand(randv); + else + srand(get_ticks() + rand()); /* Set all fields randomly */ for (i = 0; i < 4; i++) |