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Re: [Qemu-devel] [PATCH v2] hw/misc: Add Exynos4210 Pseudo Random Number

From: Peter Maydell
Subject: Re: [Qemu-devel] [PATCH v2] hw/misc: Add Exynos4210 Pseudo Random Number Generator
Date: Tue, 4 Apr 2017 13:09:08 +0100

On 18 March 2017 at 19:25, Krzysztof Kozlowski <address@hidden> wrote:
> Add emulation for Exynos4210 Pseudo Random Number Generator which could
> work on fixed seeds or with seeds provided by True Random Number
> Generator block inside the SoC.
> Implement only the fixed seeds part of it in polling mode (no
> interrupts).  Simple testing:
>     # echo "exynos" > /sys/class/misc/hw_random/rng_current
>     # dd if=/dev/hwrng of=/dev/null bs=1 count=16
> Signed-off-by: Krzysztof Kozlowski <address@hidden>
> ---
> Changes since v1:
> 1. Use GRand-like functions to fix build on MingW32 (this adds also
>    finalize).
> 2. Add DPRINTF macro.
> 3. Use HWADDR_PRIx and family for printing values.

Is there a data sheet that describes this RNG? I had a quick google
but couldn't find anything in the 4210 manual you can get from Samsung.

In particular I'm not sure we want to use GRand here.

-- PMM

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