From: "Winkler, Tomas" <tomas.winkler@intel.com>
To: "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Ulf Hansson" <ulf.hansson@linaro.org>,
"Hunter, Adrian" <adrian.hunter@intel.com>,
"James Bottomley" <James.Bottomley@HansenPartnership.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
"Vinayak Holikatti" <vinholikatti@gmail.com>,
"Andy Lutomirski" <luto@kernel.org>,
"Arve Hjønnevåg" <arve@android.com>,
"Michael Ryleev" <gmar@google.com>,
"Joao Pinto" <Joao.Pinto@synopsys.com>,
"Christoph Hellwig" <hch@lst.de>,
"Yaniv Gardi" <ygardi@codeaurora.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
Avri Altman <avri.altman@gmail.com>,
"Dattatraya Kulkarni,
Anisha" <anisha.dattatraya.kulkarni@intel.com>,
"jerome.forissier@linaro.org" <jerome.forissier@linaro.org>
Subject: RE: [PATCH v5 0/8] Replay Protected Memory Block (RPMB) subsystem
Date: Sat, 23 Jul 2016 07:44:48 +0000 [thread overview]
Message-ID: <5B8DA87D05A7694D9FA63FD143655C1B542A1CC6@hasmsx108.ger.corp.intel.com> (raw)
In-Reply-To: <1468873673-21776-1-git-send-email-tomas.winkler@intel.com>
>
> Few storage technologies such is EMMC, UFS, and NVMe support RPMB
> hardware partition with common protocol and frame layout.
> The RPMB partition cannot be accessed via standard block layer, but by a set
> of specific commands: WRITE, READ, GET_WRITE_COUNTER, and
> PROGRAM_KEY.
> Such a partition provides authenticated and replay protected access, hence
> suitable as a secure storage.
>
> The RPMB layer aims to provide in-kernel API for Trusted Execution
> Environment (TEE) devices that are capable to securely compute block frame
> signature. In case a TEE device wish to store a replay protected data, it
> creates an RPMB frame with requested data and computes HMAC of the
> frame, then it requests the storage device via RPMB layer to store the data.
> A TEE driver can claim the RPMB interface, for example, via
> class_interface_register ().
> The layer provides two APIs, for rpmb_req_cmd() for issuing one of RPMB
> specific commands and rpmb_seq_cmd() for issuing of raw RPMB protocol
> frames, which is close to emmc multi ioctl interface.
>
> A storage device registers its RPMB hardware (eMMC) partition or RPMB W-
> LUN (UFS) with the RPMB layer providing an implementation for
> rpmb_seq_cmd() handler. The interface enables sending sequence of RPMB
> standard frames.
>
> A parallel user space API is provided via /dev/rpmbX character device with
> two IOCTL commands.
> Simplified one, RPMB_IOC_REQ_CMD, were read result cycles is performed
> by the framework on behalf the user and second, RPMB_IOC_SEQ_CMD
> where the whole RPMB sequence, including RESULT_READ is supplied by the
> caller.
> The latter is intended for easier adjusting of the applications that use
> MMC_IOC_MULTI_CMD ioctl, such as
> https://android.googlesource.com/trusty/app/storage/
>
> There is a also sample tool under tools/rpmb/ directory that exercises these
> interfaces and a simulation device that implements the device part.
>
> Tomas Winkler (8):
> rpmb: add Replay Protected Memory Block (RPMB) subsystem
> char: rpmb: add sysfs-class ABI documentation
> char: rpmb: add device attributes
> char: rpmb: provide a user space interface
> char: rpmb: add RPMB simulation device
> tools rpmb: add RPBM access tool
> mmc: block: register RPMB partition with the RPMB subsystem
> scsi: ufs: connect to RPMB subsystem
>
I've got few off line request for git access of this code, so here si the repo https://github.com/tomasbw/linux-mei.git branch rpmb.
The branch is rebasing one over linux master branch
Thanks and will appreciate any public review.
Tomas
next prev parent reply other threads:[~2016-07-23 7:44 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-18 20:27 [PATCH v5 0/8] Replay Protected Memory Block (RPMB) subsystem Tomas Winkler
2016-07-18 20:27 ` [PATCH v5 1/8] rpmb: add " Tomas Winkler
2016-07-18 20:27 ` [PATCH v5 2/8] char: rpmb: add sysfs-class ABI documentation Tomas Winkler
2016-08-31 10:53 ` Greg Kroah-Hartman
2016-07-18 20:27 ` [PATCH v5 3/8] char: rpmb: add device attributes Tomas Winkler
2016-08-31 10:56 ` Greg Kroah-Hartman
2016-09-01 20:21 ` Winkler, Tomas
2016-07-18 20:27 ` [PATCH v5 4/8] char: rpmb: provide a user space interface Tomas Winkler
2016-07-18 22:15 ` Paul Gortmaker
2016-07-20 9:02 ` Winkler, Tomas
2016-07-20 14:21 ` Paul Gortmaker
2016-08-05 20:08 ` Pavel Machek
2016-08-07 9:44 ` Winkler, Tomas
2016-08-31 10:49 ` Greg Kroah-Hartman
2016-09-01 20:05 ` Winkler, Tomas
2016-09-01 20:46 ` Greg Kroah-Hartman
2016-09-04 11:35 ` Winkler, Tomas
2016-09-04 20:20 ` Pavel Machek
2016-09-04 20:56 ` Winkler, Tomas
2016-07-18 20:27 ` [PATCH v5 5/8] char: rpmb: add RPMB simulation device Tomas Winkler
2016-08-31 10:57 ` Greg Kroah-Hartman
2016-08-31 10:58 ` Greg Kroah-Hartman
2016-09-01 20:25 ` Winkler, Tomas
2016-09-01 20:45 ` Greg Kroah-Hartman
2016-07-18 20:27 ` [PATCH v5 6/8] tools rpmb: add RPBM access tool Tomas Winkler
2016-07-18 20:27 ` [PATCH v5 7/8] mmc: block: register RPMB partition with the RPMB subsystem Tomas Winkler
2016-07-18 20:27 ` [PATCH v5 8/8] scsi: ufs: connect to " Tomas Winkler
2016-07-23 7:44 ` Winkler, Tomas [this message]
2016-08-05 20:06 ` [PATCH v5 0/8] Replay Protected Memory Block (RPMB) subsystem Pavel Machek
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