On 12/29/19 11:00 AM, Sughosh Ganu wrote:
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 and qemu platforms. A dummy rng driver for sandbox has also been added, along with the unit test for the rng uclass.
drivers/crypto/ace_sha.c (for the Samsung Exynos 4412) has some RNG related code (cf. CONFIG_LIB_HW_RAND) which could be moved to your new driver structure *after* merging this patch series.
The Linux driver is in drivers/crypto/exynos-rng.c.
Such a RNG driver would for instance add support for the Samsung Exynos5 CPU of the Odroid XU4 which is still on sale.
Best regards
Heinrich