diff options
Diffstat (limited to 'drivers/rng/Kconfig')
| -rw-r--r-- | drivers/rng/Kconfig | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/rng/Kconfig b/drivers/rng/Kconfig index cd72852a479..b35d8c66b9c 100644 --- a/drivers/rng/Kconfig +++ b/drivers/rng/Kconfig @@ -6,6 +6,13 @@ config DM_RNG This interface is used to initialise the rng device and to read the random seed from the device. +config SPL_DM_RNG + bool "Driver support for Random Number Generator devices in SPL" + depends on SPL_DM + help + This option is an SPL-variant of the DM_RNG option. + See the help of DM_RNG for details. + if DM_RNG config RNG_MESON @@ -113,4 +120,17 @@ config RNG_TURRIS_RWTM on other Armada-3700 devices (like EspressoBin) if Secure Firmware from CZ.NIC is used. +config RNG_EXYNOS + bool "Samsung Exynos True Random Number Generator support" + depends on DM_RNG + help + Enable support for True Random Number Generator (TRNG) available on + Exynos SoCs. + + On some chips (like Exynos850) TRNG registers are protected with TZPC + (TrustZone Protection Control). For such chips the driver provides an + implementation based on SMC calls to EL3 monitor program. In that + case the LDFW (Loadable Firmware) has to be loaded first, as it + actually implements TRNG SMC calls. + endif |