On 18/06/2024 02:37, Sam Protsenko wrote: > On some Exynos chips like Exynos850 the access to Security Sub System > (SSS) registers is protected with TrustZone, and therefore only possible > from EL3 monitor software. The Linux kernel is running in EL1, so the > only way for the driver to obtain TRNG data is via SMC calls to EL3 > monitor. Implement such SMC operation and use it when QUIRK_SMC is set > in the corresponding chip driver data. > > Signed-off-by: Sam Protsenko <semen.protsenko@xxxxxxxxxx> > --- Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> Best regards, Krzysztof
