From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Sumit Garg Subject: [PATCH v1 0/2] Add OP-TEE based hwrng driver Date: Thu, 27 Dec 2018 16:37:09 +0530 Message-Id: <1545908831-25910-1-git-send-email-sumit.garg@linaro.org> To: linux-crypto@vger.kernel.org, devicetree@vger.kernel.org Cc: mpm@selenic.com, herbert@gondor.apana.org.au, robh+dt@kernel.org, mark.rutland@arm.com, arnd@arndb.de, gregkh@linuxfoundation.org, jens.wiklander@linaro.org, daniel.thompson@linaro.org, ard.biesheuvel@linaro.org, bhsharma@redhat.com, tee-dev@lists.linaro.org, Sumit Garg List-ID: 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. Example case is Developerbox based on Socionext's Synquacer SoC [1] which provides 7 thermal sensors accessible from secure world only which could be used as entropy sources (thermal/measurement noise). [1] https://www.96boards.org/product/developerbox/ Sumit Garg (2): dt/bindings: add bindings for optional optee rng-uuid property hwrng: add OP-TEE based rng driver .../bindings/arm/firmware/linaro,optee-tz.txt | 4 + MAINTAINERS | 5 + drivers/char/hw_random/Kconfig | 15 ++ drivers/char/hw_random/Makefile | 1 + drivers/char/hw_random/optee-rng.c | 273 +++++++++++++++++++++ 5 files changed, 298 insertions(+) create mode 100644 drivers/char/hw_random/optee-rng.c -- 2.7.4