From: David Brazdil <dbrazdil@google.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rob Herring <robh+dt@kernel.org>,
Jonathan Corbet <corbet@lwn.net>,
Derek Kiernan <derek.kiernan@xilinx.com>,
Dragan Cvetic <dragan.cvetic@xilinx.com>,
Arnd Bergmann <arnd@arndb.de>,
David Brazdil <dbrazdil@google.com>,
Hans de Goede <hdegoede@redhat.com>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-doc@vger.kernel.org, Andrew Scull <ascull@google.com>,
Will Deacon <will@kernel.org>
Subject: [PATCH v2 0/2] Driver for Open Profile for DICE
Date: Thu, 9 Dec 2021 15:11:21 +0000 [thread overview]
Message-ID: <20211209151123.3759999-1-dbrazdil@google.com> (raw)
Open Profile for DICE is a secret derivation protocol used by some
Android devices. The firmware/bootloader generates the secrets and hands
them over to Linux in a reserved memory region.
See https://pigweed.googlesource.com/open-dice for more details.
This patchset adds the corresponding DeviceTree bindings and a driver
that takes ownership of the memory region and exposes it to userspace
via a misc device.
The patches are based on top of v5.16-rc4 and can also be found here:
https://android-kvm.googlesource.com/linux topic/dice_v2
Changes since v1:
* converted to miscdevice
* all mappings now write-combine to simplify semantics
* removed atomic state, any attempt at exclusive access
* simplified wipe, applied on ioctl, not on release
* fixed ioctl return value
David Brazdil (2):
dt-bindings: firmware: Add Open Profile for DICE
misc: dice: Add driver to forward secrets to userspace
.../devicetree/bindings/firmware/dice.yaml | 51 ++++++
.../userspace-api/ioctl/ioctl-number.rst | 1 +
drivers/misc/Kconfig | 8 +
drivers/misc/Makefile | 1 +
drivers/misc/dice.c | 161 ++++++++++++++++++
include/uapi/linux/dice.h | 14 ++
6 files changed, 236 insertions(+)
create mode 100644 Documentation/devicetree/bindings/firmware/dice.yaml
create mode 100644 drivers/misc/dice.c
create mode 100644 include/uapi/linux/dice.h
--
2.34.1.400.ga245620fadb-goog
next reply other threads:[~2021-12-09 15:11 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-09 15:11 David Brazdil [this message]
2021-12-09 15:11 ` [PATCH v2 1/2] dt-bindings: firmware: Add Open Profile for DICE David Brazdil
2021-12-09 15:11 ` [PATCH v2 2/2] misc: dice: Add driver to forward secrets to userspace David Brazdil
2021-12-09 15:31 ` Greg Kroah-Hartman
2021-12-09 19:38 ` Pavel Machek
2021-12-09 20:31 ` Greg Kroah-Hartman
2021-12-10 11:16 ` David Brazdil
2021-12-10 14:39 ` Greg Kroah-Hartman
2021-12-10 15:48 ` David Brazdil
2021-12-10 16:01 ` Greg Kroah-Hartman
2021-12-09 19:48 ` DRM? " Pavel Machek
2021-12-10 12:20 ` David Brazdil
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