| From: |
| Sumit Garg <sumit.garg-AT-linaro.org> |
| To: |
| linux-crypto-AT-vger.kernel.org, devicetree-AT-vger.kernel.org |
| 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> |
| Cc: |
| mpm-AT-selenic.com, herbert-AT-gondor.apana.org.au, robh+dt-AT-kernel.org, mark.rutland-AT-arm.com, arnd-AT-arndb.de, gregkh-AT-linuxfoundation.org, jens.wiklander-AT-linaro.org, daniel.thompson-AT-linaro.org, ard.biesheuvel-AT-linaro.org, bhsharma-AT-redhat.com, tee-dev-AT-lists.linaro.org, Sumit Garg <sumit.garg-AT-linaro.org> |
| Archive-link: |
| Article |
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
