linux-kernel - [PATCH v2 0/3] Raspberry Pi 4 HWRNG Support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20191119061407.69911-1-stephen@brennan.io>
Date:   Mon, 18 Nov 2019 22:14:04 -0800
From:   Stephen Brennan <stephen@...nnan.io>
To:     stephen@...nnan.io
Cc:     Matt Mackall <mpm@...enic.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Eric Anholt <eric@...olt.net>,
        Stefan Wahren <wahrenst@....net>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        linux-crypto@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-rpi-kernel@...ts.infradead.org
Subject: [PATCH v2 0/3] Raspberry Pi 4 HWRNG Support

This patch series enables support for the HWRNG included on the Raspberry
Pi 4.  It is simply a rebase of Stefan's branch [1]. I went ahead and
tested this out on a Pi 4.  Prior to this patch series, attempting to use
the hwrng gives:

    $ head -c 2 /dev/hwrng
    head: /dev/hwrng: Input/output error

After this series, the same command gives two random bytes.

Changes in v2:
- specify the correct size for the region in the dts, refactor bcm283x rng

---

Stefan Wahren (2):
  dt-bindings: rng: add BCM2711 RNG compatible
  hwrng: iproc-rng200: Add support for BCM2711

Stephen Brennan (1):
  ARM: dts: bcm2711: Enable HWRNG support

 .../devicetree/bindings/rng/brcm,iproc-rng200.txt     |  1 +
 arch/arm/boot/dts/bcm2711.dtsi                        |  6 +++---
 arch/arm/boot/dts/bcm2835.dtsi                        |  1 +
 arch/arm/boot/dts/bcm2836.dtsi                        |  1 +
 arch/arm/boot/dts/bcm2837.dtsi                        |  1 +
 arch/arm/boot/dts/bcm283x-common.dtsi                 | 11 +++++++++++
 arch/arm/boot/dts/bcm283x.dtsi                        |  6 ------
 drivers/char/hw_random/Kconfig                        |  2 +-
 drivers/char/hw_random/iproc-rng200.c                 |  1 +
 9 files changed, 20 insertions(+), 10 deletions(-)
 create mode 100644 arch/arm/boot/dts/bcm283x-common.dtsi

-- 
2.24.0