Re: [PATCH v5 4/4] hwrng: add OP-TEE based rng driver

2019-01-27 Thread Sumit Garg
Hi Herbert, On Thu, 24 Jan 2019 at 11:25, Sumit Garg wrote: > > On ARM SoC's with TrustZone enabled, peripherals like entropy sources > might not be accessible to normal world (linux in this case) and rather > accessible to secure world (OP-TEE in this case) only. So this driver > aims to

Re: [PATCH v5 4/4] hwrng: add OP-TEE based rng driver

2019-01-24 Thread Sumit Garg
On Thu, 24 Jan 2019 at 18:01, Daniel Thompson wrote: > > On Thu, Jan 24, 2019 at 11:24:39AM +0530, Sumit Garg wrote: > > On ARM SoC's with TrustZone enabled, peripherals like entropy sources > > might not be accessible to normal world (linux in this case) and rather > > accessible to secure world

Re: [PATCH v5 4/4] hwrng: add OP-TEE based rng driver

2019-01-24 Thread Daniel Thompson
On Thu, Jan 24, 2019 at 11:24:39AM +0530, Sumit Garg wrote: > On ARM SoC's with TrustZone enabled, peripherals like entropy sources > might not be accessible to normal world (linux in this case) and rather > accessible to secure world (OP-TEE in this case) only. So this driver > aims to provides a

[PATCH v5 4/4] hwrng: add OP-TEE based rng driver

2019-01-23 Thread Sumit Garg
On ARM SoC's with TrustZone enabled, peripherals like entropy sources might not be accessible to normal world (linux in this case) and rather accessible to secure world (OP-TEE in this case) only. So this driver aims to provides a generic interface to OP-TEE based random number generator service.