[PATCH v2 10/10] cmd: rng: Add support for selecting RNG device

Simon Glass sjg at chromium.org
Tue Mar 1 15:58:50 CET 2022

Hi Sughosh,

On Mon, 28 Feb 2022 at 05:07, Sughosh Ganu <sughosh.ganu at linaro.org> wrote:
> The 'rng' u-boot command is used for printing a select number of
> random bytes on the console. Currently, the RNG device from which the
> random bytes are read is fixed. However, a platform can have multiple
> RNG devices, one example being qemu, which has a virtio RNG device and
> the RNG pseudo device through the TPM chip.
> Extend the 'rng' command so that the user can provide the RNG device
> number from which the random bytes are to be read. This will be the
> device index under the RNG uclass.
> Signed-off-by: Sughosh Ganu <sughosh.ganu at linaro.org>
> Tested-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
> ---
> Changes since V1:
> * Changed the help text to show order of the parameters passed
>   to the rng command, based on review comment from Heinrich
>  cmd/rng.c | 31 +++++++++++++++++++++++--------
>  1 file changed, 23 insertions(+), 8 deletions(-)

Please add a test for the command and also add doc/usage


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