rng: add OP-TEE based Random Number Generator
Add driver for OP-TEE based Random Number Generator on ARM SoCs
where hardware entropy sources are not accessible to normal world
and the RNG service is provided by a HWRNG Trusted Application (TA).
This driver is based on the linux driver: char/hw_random/optee-rng.c
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
diff --git a/drivers/rng/Makefile b/drivers/rng/Makefile
index 39f7ee3..435b3b9 100644
--- a/drivers/rng/Makefile
+++ b/drivers/rng/Makefile
@@ -7,6 +7,7 @@
obj-$(CONFIG_RNG_MESON) += meson-rng.o
obj-$(CONFIG_RNG_SANDBOX) += sandbox_rng.o
obj-$(CONFIG_RNG_MSM) += msm_rng.o
+obj-$(CONFIG_RNG_OPTEE) += optee_rng.o
obj-$(CONFIG_RNG_STM32MP1) += stm32mp1_rng.o
obj-$(CONFIG_RNG_ROCKCHIP) += rockchip_rng.o
obj-$(CONFIG_RNG_IPROC200) += iproc_rng200.o