Re: [PATCH v4 0/3] MediaTek Security random number generator support
From: Neal Liu
Date: Thu Aug 01 2019 - 21:35:53 EST
Dear Matthias, Rob, Mark,
Just gentle ping.
> On Mon, 2019-06-24 at 15:24 +0800, Neal Liu wrote:
> > These patch series introduce a generic rng driver for Trustzone
> > based kernel driver which would like to communicate with ATF
> > SIP services.
> > Patch #1 initials SMC fid table for Mediatek SIP interfaces and
> > adds HWRNG related SMC call.
> > Patch #2..3 adds mtk-sec-rng kernel driver for Trustzone based SoCs.
> > For MediaTek SoCs on ARMv8 with TrustZone enabled, peripherals like
> > entropy sources is not accessible from normal world (linux) and
> > rather accessible from secure world (ATF/TEE) only. This driver aims
> > to provide a generic interface to ATF rng service.
> > changes since v1:
> > - rename mt67xx-rng to mtk-sec-rng since all MediaTek ARMv8 SoCs
> > can reuse this driver.
> > - refine coding style and unnecessary check.
> > changes since v2:
> > - remove unused comments.
> > - remove redundant variable.
> > changes since v3:
> > - add dt-bindings for MediaTek rng with TrustZone enabled
> > - revise HWRNG SMC call fid
> > Neal Liu (3):
> > soc: mediatek: add SMC fid table for SIP interface
> > dt-bindings: rng: add bindings for MediaTek ARMv8 SoCs
> > hwrng: add mtk-sec-rng driver
> > .../devicetree/bindings/rng/mtk-sec-rng.txt | 10 ++
> > drivers/char/hw_random/Kconfig | 16 +++
> > drivers/char/hw_random/Makefile | 1 +
> > drivers/char/hw_random/mtk-sec-rng.c | 97 +++++++++++++++++++
> > include/linux/soc/mediatek/mtk_sip_svc.h | 33 +++++++
> > 5 files changed, 157 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/rng/mtk-sec-rng.txt
> > create mode 100644 drivers/char/hw_random/mtk-sec-rng.c
> > create mode 100644 include/linux/soc/mediatek/mtk_sip_svc.h