Add a random number generator(rng) uclass to facilitate adding drivers for rng devices. I plan to add an implementation of the EFI_RNG_PROTOCOL, which would get the random number from the rng uclass -- the protocol would be used by the efi stub for getting a random number for the kaslr feature.
The patch series also adds a driver for the rng device found on the stm32mp1 platforms. A dummy rng driver for sandbox has also been added, along with the unit test for the rng uclass.
Sughosh Ganu (7): dm: rng: Add random number generator(rng) uclass clk: stm32mp1: Add a clock entry for RNG1 device stm32mp1: rng: Add a driver for random number generator(rng) device configs: stm32mp15: Enable random number generator(rng) device sandbox: rng: Add a random number generator(rng) driver configs: sandbox: Enable random number generator(rng) device test: rng: Add basic test for random number generator(rng) uclass
arch/sandbox/dts/test.dts | 4 + configs/sandbox64_defconfig | 2 + configs/sandbox_defconfig | 2 + configs/stm32mp15_basic_defconfig | 2 + configs/stm32mp15_optee_defconfig | 2 + configs/stm32mp15_trusted_defconfig | 2 + drivers/Kconfig | 2 + drivers/Makefile | 1 + drivers/clk/clk_stm32mp1.c | 1 + drivers/rng/Kconfig | 21 +++++ drivers/rng/Makefile | 8 ++ drivers/rng/rng-uclass.c | 23 +++++ drivers/rng/sandbox_rng.c | 36 ++++++++ drivers/rng/stm32mp1_rng.c | 164 ++++++++++++++++++++++++++++++++++++ include/dm/uclass-id.h | 1 + include/rng.h | 25 ++++++ test/dm/Makefile | 1 + test/dm/rng.c | 26 ++++++ 18 files changed, 323 insertions(+) create mode 100644 drivers/rng/Kconfig create mode 100644 drivers/rng/Makefile create mode 100644 drivers/rng/rng-uclass.c create mode 100644 drivers/rng/sandbox_rng.c create mode 100644 drivers/rng/stm32mp1_rng.c create mode 100644 include/rng.h create mode 100644 test/dm/rng.c