linux-kernel - Re: [PATCHv1 0/3] Enable crypto module on Amlogic GXBB SoC platform

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Date:   Wed, 11 Dec 2019 15:07:53 +0530
From:   Anand Moon <linux.amoon@...il.com>
To:     Neil Armstrong <narmstrong@...libre.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Corentin Labbe <clabbe@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S . Miller" <davem@...emloft.net>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-amlogic@...ts.infradead.org,
        Linux Kernel <linux-kernel@...r.kernel.org>,
        linux-crypto@...r.kernel.org
Subject: Re: [PATCHv1 0/3] Enable crypto module on Amlogic GXBB SoC platform

Hi Neil,

On Wed, 11 Dec 2019 at 14:23, Neil Armstrong <narmstrong@...libre.com> wrote:
>
> hi,
>
>
> On 11/12/2019 09:41, Anand Moon wrote:
> > Below changes enable cryto module on Amlogic GXBB SoC.
> >
> > I was realy happy to get this feature working on Odroid C2 SBC.
> > I will try on other SBC in the future.
> >
> > Tested with loading tcrypt module.
> > # sudo modprobe tcrypt sec=1 mode=200
> > [sudo] password for alarm:
> > [  903.867059] tcrypt:
> > [  903.867059] testing speed of async ecb(aes) (ecb(aes-arm64)) encryption
> > [  903.870265] tcrypt: test 0 (128 bit key, 16 byte blocks): 1922107 operations in 1 seconds (30753712 bytes)
> > [  904.872802] tcrypt: test 1 (128 bit key, 64 byte blocks): 679032 operations in 1 seconds (43458048 bytes)
> > [  905.872717] tcrypt: test 2 (128 bit key, 256 byte blocks): 190190 operations in 1 seconds (48688640 bytes)
> > [  906.872793] tcrypt: test 3 (128 bit key, 1024 byte blocks): 49014 operations in 1 seconds (50190336 bytes)
> > [  907.872808] tcrypt: test 4 (128 bit key, 1472 byte blocks): 34342 operations in 1 seconds (50551424 bytes)
> > [  908.876828] tcrypt: test 5 (128 bit key, 8192 byte blocks): 6199 operations in 1 seconds (50782208 bytes)
> >
> > -Anand
> >
> > Anand Moon (3):
> >   arm64: dts: amlogic: adds crypto hardware node for GXBB SoCs
> >   dt-bindings: crypto: Add compatible string for amlogic GXBB SoC
> >   crypto: amlogic: Add new compatible string for amlogic GXBB SoC
> >
> >  .../devicetree/bindings/crypto/amlogic,gxl-crypto.yaml |  1 +
> >  arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi            | 10 ++++++++++
> >  drivers/crypto/amlogic/amlogic-gxl-core.c              |  1 +
> >  3 files changed, 12 insertions(+)
> >
>
> Wow, I'm surprised it works on GXBB, Amlogic completely removed HW crypto for GXBB in all their
> vendor BSPs, in Linux, U-Boot and ATF chain.

Sorry I was not aware of this. :$

>
> Could you run more tests to be sure it's really functional ?
>
> Neil

>From the public datasheet for Odroid C2 [0] S905_Public_Datasheet_V1.1.4.pdf
Chapter 27.1 : "crypto engine is one encrypt/decrypt function accelerator"

AES block cipher with 128/192/256 Bits keys, standard 16 bytes block
size and streaming ECB, CBC and CTR modes
DES/TDES block cipher with ECB and CBC modes supporting 64 Bits key
for DES and 192 Bits key for 3DES
Hardware key-ladder operation and DVB-CSA for transport stream encryption
Built-in hardware True Random Number Generator (TRNG), CRC and
SHA-1/SHA-2 (SHA-224/SHA-256) engine

But in my testing I did not see any count increment in /proc/interrupts

 32:          0          0          0          0     GICv2 201 Level     ppmmu2
 33:          0          0          0          0     GICv2  35 Edge      meson
 34:          0          0          0          0     GICv2  89 Edge
  dw_hdmi_top_irq, c883a000.hdmi-tx
 35:          0          0          0          0     GICv2 220 Edge
  gxl-crypto
 36:          0          0          0          0     GICv2 221 Edge
  gxl-crypto

[0] https://dn.odroid.com/S905/DataSheet/S905_Public_Datasheet_V1.1.4.pdf

Attach is the some testing. *But not sure this is Hardware Accelerated.* :<

-Anand

View attachment "crypto_odroidc2.txt" of type "text/plain" (35848 bytes)